Polishing machine with dust removal function

Abstract

The utility model relates to the technical field of polishing machines, and discloses a polishing machine with a dust removal function, which comprises a bottom plate, a fixing mechanism arranged at the top of the bottom plate and used for fixing tubular objects, and a polishing mechanism arranged at the top of the bottom plate and used for polishing the tubular objects. The top of the bottom plate is further provided with a driving mechanism used for driving the polishing mechanism to move. By arranging the bottom plate, the fixing mechanism, the driving mechanism and the polishing mechanism, during use, a user can fix two pipe objects needing to be polished through the fixing mechanism, then the pipe objects can be polished through the driving box mechanism and the polishing mechanism, multiple pipe objects can be polished at a time, and the polishing efficiency is improved. And meanwhile, the interior and the exterior of the pipe type object can be polished, the polishing efficiency is further improved, dust falling treatment can be conducted on dust generated during polishing, and therefore the problem that the dust drifts away in air, and then the body of a worker is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing machines, and in particular to a polishing machine with a dust removal function. Background Art

[0002] Polishing machines are mechanical equipment used to polish the surface of objects, usually for surface treatment of metals, plastics, glass and other materials. They use rotation or vibration, with polishing paste or polishing liquid, to make the surface of objects smooth and shiny through friction and abrasion.

[0003] Most of the existing polishing machines do not have the function of dust removal, resulting in the dust generated being mixed into the air when polishing plates or metals. Long-term inhalation of the dust by workers will pose a threat to their health. In addition, most of the existing polishing machines can only polish a single item at a time, which results in limited polishing efficiency. In addition, the existing polishing machines cannot polish both the inside and outside of pipe-like items, resulting in limited scope of application. Utility Model Content

[0004] The purpose of the utility model is to provide a polishing machine with a dust removal function to solve the problem that most of the existing polishing machines in the prior art do not have the dust removal function, resulting in the dust generated being mixed into the air when polishing plates or metals, and the workers will be threatened by the health of the workers after inhaling the dust into their bodies for a long time. In addition, most of the existing polishing machines can only polish a single object at a time, which leads to limited polishing efficiency. In addition, the existing polishing machines cannot polish both the inside and outside of pipe-like objects, resulting in limited application scope.

[0005] The utility model provides the following technical solution: a polishing machine with a dust removal function, comprising a base plate, a fixing mechanism for fixing a tube-like object is arranged on the top of the base plate, a polishing mechanism for polishing the tube-like object is arranged on the top of the base plate, and a driving mechanism for driving the polishing mechanism to move is also arranged on the top of the base plate.

[0006] As a preferred embodiment of the above technical solution, the fixing mechanism includes a fixing plate fixedly connected to the top of the bottom plate, a support plate fixedly connected to the outer side of the fixing plate, a first motor fixedly connected to the top of the support plate, a driving wheel fixedly connected to the output shaft of the first motor, a transmission belt rotatably connected to the inner side of the driving wheel, a driven wheel transmission-connected to the inner side of the transmission belt, a rotating shaft fixedly connected to the outer side of the driven wheel, an end of the rotating shaft away from the driven wheel passes through the fixing plate and is fixedly connected to a three-jaw chuck, and a baffle is fixedly connected to the side of the fixing plate away from the support plate, so that a user can place one end of two tube objects to be polished on the three-jaw chuck. The claw chuck is inside and fixed by the three-jaw chuck. Then the user can start the first motor, and the first motor drives the driving wheel to rotate. The driving wheel rotates and drives the driven wheel to rotate through the transmission belt. The rotation of the driving wheel and the driven wheel will drive the two shafts to rotate. At this time, the two three-jaw chucks will rotate. Since the tube-like objects are fixed on the three-jaw chuck at this time, the two tube-like objects will be driven to rotate by the three-jaw chuck. Then the user can polish them through the driving mechanism and the polishing mechanism, thereby achieving the effect of fixing the two objects, which is convenient for subsequent polishing processing.

[0007] As a preferred embodiment of the above technical solution, there are two rotating shafts, and the two rotating shafts are installed on the support plate through bearing seats, the number of three-jaw chucks is the same as the rotating shafts, one end of the two rotating shafts are fixedly connected to the driving wheel and the driven wheel respectively, and the other ends of the two rotating shafts are fixedly connected to the two three-jaw chucks respectively, the two three-jaw chucks have the same specifications and sizes, and the baffle is distributed between the two three-jaw chucks.

[0008] As a preferred embodiment of the above technical solution, the driving mechanism includes a groove opened on the top of the base plate, the inner side of the groove is fixedly connected to a limiting rod, the outside of the limiting rod is slidably connected to a slide plate, the outside of the slide plate is fixedly connected to a cylinder, and the outside of the cylinder is fixedly connected to a mounting plate.

[0009] As a preferred embodiment of the above technical solution, the mounting plate is fixedly connected to the top of the base plate, the cylinder is mounted on the mounting plate, and the output shaft of the cylinder passes through the mounting plate and is fixedly connected to the slide plate.

[0010] As a preferred embodiment of the above technical solution, the polishing mechanism includes a limiting groove provided on the inner side of the slide plate, the inner side of the limiting groove is rotatably connected with a screw rod, the outer side of the screw rod is threadedly connected with two movable plates, the top of the movable plate is fixedly connected with a positioning plate, the outer side of the positioning plate is fixedly connected with a first polishing roller with a hollow interior, one end of the first polishing roller is provided with a polishing block, and the other end of the first polishing roller is connected with a water pump, and the end of the water pump away from the first polishing roller is connected with a water tank, a rectangular hole is provided on the positioning plate, a fixing rod is fixedly connected to the inner side of the rectangular hole, a sliding block is slidably connected to the outer side of the fixing rod, an electric push rod is provided on the outer side of the sliding block, a second polishing roller is fixedly connected to the outer side of the sliding block, a second motor is fixedly connected to the top of the screw rod, and a plurality of water spraying holes are provided on the outer side of the first polishing roller, so that the user can fix the object to be polished through the fixing mechanism, and then the user can start the second motor, the second motor works to drive the screw rod to rotate, the screw rotation drives the two movable plates to move through the limiting groove, the movement of the movable plate drives the positioning plate, the first polishing roller, and the second polishing roller to move, and when the first polishing roller and the second polishing roller move to the position corresponding to the tube object, the user The polishing block matching the size of the pipe object can be installed on the first polishing roller and the second polishing roller by bolts, and then the position of the second polishing roller is adjusted by the electric push rod. Then the user can use the water pump to transport the water in the water tank to the first polishing roller and the second polishing roller through the inlet pipe, the three-way pipe, the connecting pipe and the bellows, and then spray it out through the water spray holes on the outside of the first polishing roller and the second polishing roller. Then the user can drive the slide plate to move through the limit rod through the cylinder, and the movement of the slide plate drives the positioning plate, the first polishing roller and the second polishing roller to move. At this time, the polishing block on the outside of the first polishing roller will extend into the inside of the pipe object, and the second polishing roller will contact the outer surface of the pipe object. Since the pipe object is in a rotating state at this time, the polishing blocks on the outside of the first polishing roller and the second polishing roller will polish the inside and outside of the pipe object, and the water sprayed from the water spray holes can perform dust reduction treatment on dust generated during polishing, thereby avoiding the problem that the dust generated during polishing will float in the air and affect the body of the staff after inhalation. At the same time, multiple objects can be polished at one time, thereby improving efficiency, and the effect of polishing both the inside and outside of the object can also be achieved.

[0011] As a preferred embodiment of the above technical solution, one end of the screw is rotatably connected to the inner bottom of the limit groove through a bearing, and the other end of the screw passes through the limit groove and is fixedly connected to the second motor, the second motor is fixedly connected to the top of the skateboard, the two movable plates are threadedly connected to the screw, and the two movable plates have the same specifications and dimensions, and a filling pipe and a drain pipe with valves are provided on the outside of the water tank, which are not drawn.

[0012] As a preferred embodiment of the above technical solution, there are two polishing blocks, which are respectively installed on the outer ends of the first polishing roller and the second polishing roller by two bolts, and a number of water spray holes are arranged on the first polishing roller and the second polishing roller. The ends of the first polishing roller and the second polishing roller away from the polishing blocks respectively pass through the positioning plate and the slider and are distributed on the other side of the positioning plate. The water pump and the water tank are both installed on the top of the movable plate, and inlet pipe and tee pipe are respectively arranged at both ends of the water pump. The water pump is connected to the water tank through the inlet pipe, and a connecting pipe and a bellows are arranged at the end of the tee pipe away from the water pump. The first polishing roller and the second polishing roller are respectively connected to the water pump through the connecting pipe, the bellows and the tee pipe, and both ends of the fixed rod are fixedly connected to the inner side of the rectangular hole, the electric push rod is installed on the outer side of the positioning plate, and the output shaft of the electric push rod passes through the positioning plate and is fixedly connected to the slider.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model is provided with a bottom plate, a fixing mechanism, a driving mechanism and a polishing mechanism, so that when in use, the user can place one end of two pipe objects to be polished on the inner side of the three-jaw chuck and fix them through the three-jaw chuck, and then the user can start the first motor, the first motor drives the driving wheel to rotate, the driving wheel rotates through the transmission belt to drive the driven wheel to rotate, the driving wheel and the driven wheel rotate to drive the two rotating shafts to rotate, and then the two three-jaw chucks will rotate. Since the pipe object is fixed on the three-jaw chuck at this time, the two pipe objects will be driven to rotate by the three-jaw chuck, and then the user can start the second motor, the second motor drives the screw to rotate, the screw rotation drives the two movable plates to move through the limiting groove, the movable plate movement drives the positioning plate, the first polishing roller, and the second polishing roller to move, when the first polishing roller and the second polishing roller move to the position corresponding to the pipe object, the user can install the polishing block matching the size of the pipe object on the first polishing roller and the second polishing roller through bolts, and then adjust the second polishing roller through the electric push rod. Position, then the user can use the water pump to transport the water in the water tank through the inlet pipe, the three-way pipe, the connecting pipe and the bellows to the first polishing roller and the second polishing roller, and then spray it out through the water spray holes on the outside of the first polishing roller and the second polishing roller. Then the user can use the cylinder to drive the slide plate to move through the limit rod, and the movement of the slide plate drives the positioning plate, the first polishing roller and the second polishing roller to move. At this time, the polishing block on the outside of the first polishing roller will extend into the inside of the tube-like object, and the second polishing roller will contact the outer surface of the tube-like object. Since the tube-like object is in a rotating state at this time, the polishing blocks on the outside of the first polishing roller and the second polishing roller will polish the inside and outside of the tube-like object, and the water sprayed from the water spray holes can perform dust reduction treatment on the dust generated during polishing, so that multiple tube-like objects can be polished at one time, thereby improving the polishing efficiency. At the same time, the inside and outside of the tube-like object can also be polished, further improving the polishing efficiency, and the dust and dust generated during polishing can also be dust-reduced, thereby preventing them from floating in the air and affecting the health of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A first-person perspective stereogram of a polishing machine with a dust removal function;

[0016] Figure 2 A second-angle stereoscopic view of a polishing machine with a dust removal function;

[0017] Figure 3 A third-person perspective view of a polishing machine with a dust removal function;

[0018] Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0019] Figure 5 for Figure 3Enlarged schematic diagram of the structure at point B in the middle.

[0020] In the figure: 1, bottom plate; 11, fixed plate; 12, support plate; 13, first motor; 14, driving wheel; 15, transmission belt; 16, driven wheel; 17, rotating shaft; 18, three-jaw chuck; 19, baffle; 21, groove; 22, limit rod; 23, slide plate; 24, cylinder; 25, mounting plate; 31, limit groove; 32, screw; 33, movable plate; 34, positioning plate; 35, first polishing roller; 36, polishing block; 37, water pump; 38, water tank; 39, rectangular hole; 310, fixed rod; 311, slider; 312, electric push rod; 313, second motor; 314, second polishing roller; 315, water spray hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] Embodiment 1: Figure 1 and Figure 2 As shown, the utility model provides a technical solution: a polishing machine with a dust removal function, comprising a bottom plate 1, a fixing mechanism for fixing a tube-like object is arranged on the top of the bottom plate 1, a polishing mechanism for polishing the tube-like object is arranged on the top of the bottom plate 1, and a driving mechanism for driving the polishing mechanism to move is also arranged on the top of the bottom plate 1, the fixing mechanism comprises a fixing plate 11 fixedly connected to the top of the bottom plate 1, a support plate 12 is fixedly connected to the outer side of the fixing plate 11, a first motor 13 is fixedly connected to the top of the support plate 12, a driving wheel 14 is fixedly connected to the output shaft of the first motor 13, a transmission belt 15 is rotatably connected to the inner side of the driving wheel 14, and the inner side of the transmission belt 15 A driven wheel 16 is connected to the transmission, and a rotating shaft 17 is fixedly connected to the outside of the driven wheel 16. The end of the rotating shaft 17 away from the driven wheel 16 passes through the fixed plate 11 and is fixedly connected to a three-jaw chuck 18. The side of the fixed plate 11 away from the support plate 12 is fixedly connected to a baffle 19. There are two rotating shafts 17, and the two rotating shafts 17 are installed on the support plate 12 through a bearing seat. The number of three-jaw chucks 18 is the same as that of the rotating shafts 17. One end of the two rotating shafts 17 is fixedly connected to the driving wheel 14 and the driven wheel 16 respectively, and the other ends of the two rotating shafts 17 are fixedly connected to the two three-jaw chucks 18 respectively. The specifications and sizes of the two three-jaw chucks 18 are the same, and the baffles 19 are distributed between the two three-jaw chucks 18.

[0023] Through the above technical scheme, when in use, the user can place one end of the two tube objects that need to be polished on the inner side of the three-jaw chuck 18 and fix them by the three-jaw chuck 18, and then the user can start the first motor 13, and the first motor 13 drives the driving wheel 14 to rotate, and the driving wheel 14 rotates through the transmission belt 15 to drive the driven wheel 16 to rotate. The rotation of the driving wheel 14 and the driven wheel 16 will drive the two rotating shafts 17 to rotate, and then the two three-jaw chucks 18 will rotate. Since the tube objects are fixed on the three-jaw chuck 18 at this time, the two tube objects will be driven to rotate by the three-jaw chuck 18, and then the user can polish them through the driving mechanism and the polishing mechanism, thereby achieving the effect of fixing the two objects, which is convenient for subsequent polishing processing.

[0024] Embodiment 2: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the utility model provides a technical solution: a polishing machine with a dust removal function, comprising a base plate 1, a fixing mechanism for fixing a tube-like object is arranged on the top of the base plate 1, a polishing mechanism for polishing the tube-like object is arranged on the top of the base plate 1, and a driving mechanism for driving the polishing mechanism to move is also arranged on the top of the base plate 1, the driving mechanism comprises a groove 21 opened on the top of the base plate 1, a limit rod 22 is fixedly connected to the inner side of the groove 21, a slide plate 23 is slidably connected to the outside of the limit rod 22, a cylinder 24 is fixedly connected to the outside of the slide plate 23, a mounting plate 25 is fixedly connected to the outside of the cylinder 24, the mounting plate 25 is fixedly connected to the top of the base plate 1, the cylinder 24 is mounted on the mounting plate 25, and the output of the cylinder 24 The shaft passes through the mounting plate 25 and is fixedly connected to the slide plate 23. The polishing mechanism includes a limiting groove 31 opened on the inner side of the slide plate 23. The inner side of the limiting groove 31 is rotatably connected with a screw rod 32. The outer side of the screw rod 32 is threadedly connected to two movable plates 33. The top of the movable plate 33 is fixedly connected with a positioning plate 34. The outer side of the positioning plate 34 is fixedly connected with a first polishing roller 35 with a hollow interior. A polishing block 36 is provided at one end of the first polishing roller 35, and a water pump 37 is connected to the other end of the first polishing roller 35. The end of the water pump 37 away from the first polishing roller 35 is connected to a water tank 38. A rectangular hole 39 is opened on the positioning plate 34. A fixing rod 310 is fixedly connected to the inner side of the rectangular hole 39. A sliding block 311 is slidably connected to the outer side of the fixing rod 310. An electric push rod 312 is arranged on the outside of the block 311, a second polishing roller 314 is fixedly connected to the outside of the slider 311, a second motor 313 is fixedly connected to the top of the screw 32, a plurality of water spray holes 315 are arranged on the outside of the first polishing roller 35, one end of the screw 32 is rotatably connected to the inner bottom of the limiting groove 31 through a bearing, and the other end of the screw 32 passes through the limiting groove 31 and is fixedly connected to the second motor 313, the second motor 313 is fixedly connected to the top of the slide plate 23, the two moving plates 33 are both threadedly connected to the screw 32, and the specifications and sizes of the two moving plates 33 are the same, there are two polishing blocks 36, the two polishing blocks 36 are respectively mounted on the outer ends of the first polishing roller 35 and the second polishing roller 314 by two bolts, the first A plurality of water spray holes 315 are provided on the polishing roller 35 and the second polishing roller 314. The ends of the first polishing roller 35 and the second polishing roller 314 away from the polishing block 36 pass through the positioning plate 34 and the slider 311 respectively and are distributed on the other side of the positioning plate 34. The water pump 37 and the water tank 38 are both installed on the top of the movable plate 33. The two ends of the water pump 37 are respectively provided with an inlet pipe and a three-way pipe. The water pump 37 is connected to the water tank 38 through the inlet pipe. The end of the three-way pipe away from the water pump 37 is provided with a connecting pipe and a bellows. The first polishing roller 35 and the second polishing roller 314 are respectively connected to the water pump 37 through the connecting pipe, the bellows and the three-way pipe. The two ends of the fixed rod 310 are fixedly connected to the inner side of the rectangular hole 39. The electric push rod 312 is installed on the outer side of the positioning plate 34.The output shaft of the electric push rod 312 passes through the positioning plate 34 and is fixedly connected to the slider 311.

[0025] Through the above technical solution, the user can fix the object to be polished through the fixing mechanism, and then the user can start the second motor 313, and the second motor 313 works to drive the screw 32 to rotate, and the rotation of the screw 32 drives the two movable plates 33 to move through the limiting groove 31, and the movement of the movable plate 33 drives the positioning plate 34, the first polishing roller 35, and the second polishing roller 314 to move. When the first polishing roller 35 and the second polishing roller 314 move to the position corresponding to the tube object, the user can install the polishing block 36 matching the size of the tube object on the first polishing roller 35 and the second polishing roller 314 through bolts, and then adjust the position of the second polishing roller 314 through the electric push rod 312, and then the user can use the water pump 37 to transport the water in the water tank 38 to the first polishing roller 35 and the second polishing roller 314 through the inlet pipe, the tee pipe, the connecting pipe and the bellows, and then through the first polishing roller 35 and the second polishing roller The water spraying hole 315 on the outside of the second polishing roller 314 sprays water, and then the user can drive the slide plate 23 to move through the limit rod 22 through the cylinder 24. The movement of the slide plate 23 drives the positioning plate 34, the first polishing roller 35 and the second polishing roller 314 to move. At this time, the polishing block 36 on the outside of the first polishing roller 35 will extend into the inner side of the tube-like object, and the second polishing roller 314 will contact the outer surface of the tube-like object. Since the tube-like object is in a rotating state at this time, the polishing blocks 36 on the outside of the first polishing roller 35 and the second polishing roller 314 will polish the inside and outside of the tube-like object, and the water sprayed from the water spraying hole 315 can reduce the dust generated during polishing, thereby avoiding the problem that the dust generated during polishing will float in the air and affect the body of the staff after inhalation. At the same time, multiple objects can be polished at one time, thereby improving efficiency, and the effect of polishing both the inside and outside of the object can also be achieved.

[0026] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A polishing machine with dust removal function, comprising a base plate (1), characterized in that: A fixing mechanism for fixing a tube-like object is arranged on the top of the bottom plate (1), a polishing mechanism for polishing the tube-like object is arranged on the top of the bottom plate (1), and a driving mechanism for driving the polishing mechanism to move is also arranged on the top of the bottom plate (1), wherein the fixing mechanism comprises a fixing plate (11) fixedly connected to the top of the bottom plate (1), a support plate (12) is fixedly connected to the outside of the fixing plate (11), a first motor (13) is fixedly connected to the top of the support plate (12), a driving wheel (14) is fixedly connected to the output shaft of the first motor (13), a transmission belt (15) is rotatably connected to the inside of the driving wheel (14), and the transmission belt (15) is rotatably connected to the inside of the driving wheel (14), and the transmission belt (15) is rotatably connected to the inside of the driving wheel (14). 5) is connected to the inner side of the driven wheel (16), the driven wheel (16) is fixedly connected to the outside of the rotating shaft (17), one end of the rotating shaft (17) away from the driven wheel (16) passes through the fixed plate (11) and is fixedly connected to a three-jaw chuck (18), and the side of the fixed plate (11) away from the support plate (12) is fixedly connected to a baffle (19), there are two rotating shafts (17), and the two rotating shafts (17) are installed on the support plate (12) through a bearing seat, the number of the three-jaw chuck (18) is the same as the number of the rotating shafts (17), one end of the two rotating shafts (17) is fixedly connected to the driving wheel (14) and the driven wheel (16), and the other ends of the two rotating shafts (17) are respectively The baffle plate (19) is fixedly connected to two three-jaw chucks (18), the two three-jaw chucks (18) have the same specifications and sizes, the baffle plate (19) is distributed between the two three-jaw chucks (18), the polishing mechanism comprises a limit groove (31) provided on the inner side of the slide plate (23), the inner side of the limit groove (31) is rotatably connected to a screw rod (32), the outer side of the screw rod (32) is threadedly connected to two movable plates (33), the top of the movable plate (33) is fixedly connected to a positioning plate (34), the outer side of the positioning plate (34) is fixedly connected to a first polishing roller (35) with a hollow interior, one end of the first polishing roller (35) is provided with a polishing block (36), and the first polishing roller (35) is provided with a polishing block (36). 5) is connected to a water pump (37), an end of the water pump (37) away from the first polishing roller (35) is connected to a water tank (38), a rectangular hole (39) is opened on the positioning plate (34), a fixing rod (310) is fixedly connected to the inner side of the rectangular hole (39), a slider (311) is slidably connected to the outside of the fixing rod (310), an electric push rod (312) is arranged on the outside of the slider (311), a second polishing roller (314) is fixedly connected to the outside of the slider (311), a second motor (313) is fixedly connected to the top of the screw rod (32), and a plurality of water spray holes (315) are arranged on the outside of the first polishing roller (35).

2. A polishing machine with dust removal function according to claim 1, characterized in that: The driving mechanism comprises a groove (21) formed on the top of the bottom plate (1), the inner side of the groove (21) being fixedly connected to a limit rod (22), the outer side of the limit rod (22) being slidably connected to a slide plate (23), the outer side of the slide plate (23) being fixedly connected to a cylinder (24), and the outer side of the cylinder (24) being fixedly connected to a mounting plate (25).

3. A polishing machine with dust removal function according to claim 2, characterized in that: The mounting plate (25) is fixedly connected to the top of the base plate (1), the cylinder (24) is mounted on the mounting plate (25), and the output shaft of the cylinder (24) passes through the mounting plate (25) and is fixedly connected to the slide plate (23).

4. A polishing machine with dust removal function according to claim 3, characterized in that: One end of the screw rod (32) is rotatably connected to the inner bottom of the limiting groove (31) via a bearing, and the other end of the screw rod (32) passes through the limiting groove (31) and is fixedly connected to the second motor (313), the second motor (313) is fixedly connected to the top of the slide plate (23), and the two movable plates (33) are both threadedly connected to the screw rod (32), and the two movable plates (33) have the same specifications and dimensions.

5. A polishing machine with dust removal function according to claim 4, characterized in that: There are two polishing blocks (36), and the two polishing blocks (36) are respectively mounted on the outer ends of the first polishing roller (35) and the second polishing roller (314) by two bolts. The first polishing roller (35) and the second polishing roller (314) are both provided with a plurality of water spray holes (315). The ends of the first polishing roller (35) and the second polishing roller (314) away from the polishing blocks (36) respectively pass through the positioning plate (34) and the slider (311) and are distributed on the other side of the positioning plate (34). The water pump (37) and the water tank (38) are both mounted on the top of the movable plate (33). The water pump (37) and the water tank (38) are both mounted on the top of the movable plate (33). An inlet pipe and a three-way pipe are respectively provided at both ends of the water pump (37); the water pump (37) is connected to the water tank (38) via the inlet pipe; a connecting pipe and a bellows are provided at one end of the three-way pipe away from the water pump (37); the first polishing roller (35) and the second polishing roller (314) are respectively connected to the water pump (37) via the connecting pipe, the bellows and the three-way pipe; both ends of the fixing rod (310) are fixedly connected to the inner side of the rectangular hole (39); the electric push rod (312) is mounted on the outer side of the positioning plate (34); and the output shaft of the electric push rod (312) passes through the positioning plate (34) and is fixedly connected to the slider (311).

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