A pipe polishing device and its polishing method

Abstract

The present invention provides a pipe polishing device and a polishing method thereof, belonging to the technical field of pipe polishing. The pipe polishing device includes a base, placing rollers and a polishing mechanism. The placing rollers are symmetrically and rotatably installed on the surface of the base, and the polishing mechanism is installed on the surface of the base. The polishing mechanism includes a lower grinding roller, a support arm and a moving seat. The lower grinding roller is rotatably installed on the surface of the base. A first gear is fixedly installed at one end of the lower grinding roller, and a second gear is fixedly installed at one end of each of the two placing rollers. The first gear meshes with both of the second gears. By setting the polishing mechanism, the pipe is limited by pressing the pressing roller against the surface of the pipe, so that the outer circle of the pipe contacts the surface of the lower grinding roller. Subsequently, the lower grinding roller is driven to rotate by a first motor to polish the outer circle of the pipe. And a third motor can drive the rotating shaft to rotate, and the inner wall of the pipe is polished by the upper grinding roller, so as to realize synchronous grinding of the inner and outer circles of the pipe and improve the grinding efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe polishing, and in particular, to a pipe polishing device and a polishing method thereof. Background Art

[0002] A pipe refers to metal or non-metal pipe materials of various shapes and specifications, usually tubular materials produced through smelting, extrusion, stretching, rolling, welding or other processing methods, and is widely used in multiple industries such as construction, machinery, petroleum, chemical industry, shipbuilding, and electric power. It is mainly made of metal materials such as steel, aluminum, stainless steel, copper, alloy, etc., and has high strength and corrosion resistance, and is commonly used in occasions where high pressure, high temperature resistance or fluid transmission is required. Among them, in industries such as chemical industry and food, it is necessary to polish the inner and outer circles of the pipe to make the pipe surface smoother, reduce the attachment of bacteria and pollutants, and thus ensure the cleanliness and hygiene of the pipe system.

[0003] The existing pipe polishing devices are inconvenient for synchronously polishing the inner and outer circles of the pipe, usually carried out step by step, reducing the polishing efficiency, and the cutting fluid remaining in the inner circle of the pipe will also affect the polishing effect, resulting in the inability to guarantee the polishing quality. Summary of the Invention

[0004] To make up for the above deficiencies, the present invention provides a pipe polishing device and a polishing method thereof that overcome the above technical problems or at least partially solve the above problems.

[0005] The present invention is implemented as follows:

[0006] The present invention provides a pipe polishing device, including a base, a placing roller and a polishing mechanism. The placing roller is symmetrically and rotatably installed on the surface of the base for placing the pipe. The polishing mechanism is installed on the surface of the base, and the polishing mechanism includes:

[0007] A lower grinding roller, which is rotatably installed on the surface of the base for grinding the outer circle of the pipe;

[0008] A support arm, which is slidably installed on the surface of the base. One end of the support arm is fixedly installed with a mounting plate, and pressing rollers are symmetrically and rotatably installed on the surface of the mounting plate;

[0009] A moving seat, which is slidably installed on the surface of the base. A rotating shaft is rotatably installed on the side wall of the moving seat, and a mounting roller is fixedly installed at one end of the rotating shaft. An upper grinding roller is sleeved on the surface of the mounting roller.

[0010] In a preferred embodiment, a first gear is fixedly installed at one end of the lower grinding roller, and second gears are fixedly installed at one end of each of the two placing rollers. The first gear meshes with both of the second gears. A first motor is fixedly installed on the side wall of the base, and the output end of the first motor is fixedly connected to one of the placing rollers. The surface of the base is symmetrically and fixedly installed with slide rails, and the moving seat is slidably installed on the surface of the slide rails. A lead screw is rotatably installed on the surface of the base, and a threaded block is fixedly installed in the inner cavity of the moving seat. The threaded block is threadedly connected to the lead screw. A second motor is fixedly installed on the side wall of the base, and the output end of the second motor is fixedly connected to the lead screw.

[0011] In a preferred embodiment, a third gear is fixedly installed at one end of the rotating shaft, and a third motor is fixedly installed on the surface of the moving seat. The output end of the third motor is fixedly installed with a fourth gear, and the fourth gear meshes with the third gear.

[0012] In a preferred embodiment, a driving block is fixedly installed at the bottom of the moving seat. The driving block is wedge-shaped. A sliding plate is slidably installed in the inner cavity of the base. One end of the sliding plate is wedge-shaped. A first connecting rod is connected between the sliding plate and the support arm, and a first spring is sleeved on the surface of the first connecting rod for driving the sliding plate to move upward.

[0013] In a preferred embodiment, an oil removal mechanism is installed on the surface of the installation roller for removing the cutting fluid from the inner circle of the pipe. The oil removal mechanism includes a solvent chamber, a counterweight, and a brush plate. A solvent chamber is opened in the inner cavity of the installation roller for storing a cleaning agent. A liquid injection pipe is installed on the side wall of the installation roller. Liquid injection cavities are symmetrically opened in the inner cavity of the installation roller. A counterweight is slidably installed in the inner cavity of the liquid injection cavity. A second connecting rod is fixedly installed on the surface of the counterweight, and a brush plate is fixedly installed at one end of the second connecting rod for brushing the cutting fluid remaining on the inner wall of the pipe.

[0014] In a preferred embodiment, a second spring is installed in the liquid injection cavity. One end of the second spring is fixedly connected to the installation roller, and the other end of the second spring is fixedly connected to the counterweight for driving the counterweight to move toward the inner cavity of the liquid injection cavity. A piston is fixedly installed on the surface of the counterweight.

[0015] In a preferred embodiment, a first one-way valve and a second one-way valve are installed on the side wall of the liquid injection cavity. The second one-way valve is communicated with the solvent chamber. A liquid distribution head is fixedly installed on the side wall of the installation roller. A plurality of spray holes are opened on the surface of the liquid distribution head, and the spray holes are communicated with the first one-way valve.

[0016] In a preferred embodiment, a chip removal mechanism is mounted on the surface of the rotating shaft for cleaning debris inside the inner circle of the pipe. The chip removal mechanism includes a fixed rod and a spray head. The rotating shaft is hollow. The fixed rod is inserted into the hollow part of the rotating shaft. A connecting seat is fixedly installed on the side wall of the moving seat, and the fixed rod is fixedly connected to the connecting seat. An air pump is fixedly installed on the surface of the moving seat. The fixed rod is hollow, and the hollow part of the fixed rod communicates with the hollow part of the rotating shaft. A trachea is connected between the air outlet end of the air pump and the hollow part of the fixed rod. Spray heads are symmetrically installed on the side wall of the rotating shaft, and one end of the spray head communicates with the hollow part of the rotating shaft.

[0017] In a preferred embodiment, a fifth gear is fixedly installed at one end of the fixed rod. A sleeve is rotatably installed on the side wall of the rotating shaft. A sixth gear is fixedly installed at one end of the sleeve. The sixth gear meshes with the fifth gear. A spline shaft is inserted into the inner cavity of the sleeve. A spline groove is formed in the inner cavity of the sleeve, and the spline groove meshes with the spline shaft. A cleaning ball is fixedly installed at one end of the spline shaft for cleaning debris on the inner wall of the pipe.

[0018] A pipe polishing method applicable to the above-mentioned pipe polishing device includes the following steps:

[0019] S1: Polishing; Place the pipe to be polished on the surface of the placement roller. Drive the moving seat to move towards the placement roller through the second motor. The pressing roller presses on the surface of the pipe, so that the outer circle of the pipe contacts the surface of the lower grinding roller. Subsequently, drive the placement roller to rotate synchronously through the first motor, and drive the lower grinding roller to rotate in the opposite direction to polish the outer circle of the pipe. Subsequently, when the upper grinding roller extends into the inner circle of the pipe, the upper grinding roller contacts the inner circle of the pipe. At this time, drive the rotating shaft to rotate through the third motor, and polish the inner wall of the pipe through the upper grinding roller to achieve synchronous grinding of the inner and outer circles of the pipe;

[0020] S2: Degreasing; When the third motor drives the installation roller to rotate, under the action of centrifugal force, drive the counterweight block to move towards the outer wall of the installation roller, drive the brush plate to move synchronously, so that the brush plate closely adheres to the inner wall of the pipe. When the upper grinding roller inserts into the inner wall of the pipe, it is in a non-central position of the pipe. Drive the piston to reciprocate in the liquid injection cavity, so that the first one-way valve and the second one-way valve are alternately conducted, draw the cleaning agent in the solvent cavity into the liquid injection cavity, and spray it out from the spray holes to the inner wall of the pipe to dissolve the residual cutting fluid, and remove the cutting fluid in cooperation with the brush plate;

[0021] S3: Cleaning; Send high-pressure gas into the hollow part of the rotating shaft through the hollow part of the fixed rod by the air pump, and spray it out from the spray head to the inner wall of the pipe. When the rotating shaft rotates, drive the sixth gear to drive the cleaning ball to rotate by itself through the fifth gear, and under the action of centrifugal force, make the cleaning ball closely adhere to the inner wall of the pipe again to achieve secondary cleaning of the inner wall of the pipe.

[0022] A pipe polishing device and its polishing method provided by the present invention have the following beneficial effects:

[0023] 1. By setting up a polishing mechanism, the pressing roller presses on the surface of the pipe to limit the pipe, making the outer circle of the pipe contact the surface of the lower grinding roller. Subsequently, the first motor drives the lower grinding roller to rotate to polish the outer circle of the pipe; and the third motor can drive the rotating shaft to rotate, and the upper grinding roller polishes the inner wall of the pipe, realizing synchronous grinding of the inner and outer circles of the pipe and improving the grinding efficiency.

[0024] 2. By setting up a degreasing mechanism, when the third motor drives the mounting roller to rotate, under the action of centrifugal force, the counterweight block is driven to move towards the outer wall of the mounting roller, driving the brush plate to move synchronously, making the brush plate closely adhere to the inner wall of the pipe. When the upper grinding roller inserts into the inner wall of the pipe, it is in a non - central position of the pipe, and under the action of centrifugal force, the brush plate is closely adhered to the inner wall of the pipe. Therefore, the piston can be driven to reciprocate in the liquid injection cavity, making the first one - way valve and the second one - way valve conduct alternately, pumping the cleaning agent in the solvent cavity into the liquid injection cavity, and spraying it out from the spray holes towards the inner wall of the pipe to dissolve the residual cutting fluid, and removing the cutting fluid with the cooperation of the brush plate to ensure the polishing effect.

[0025] 3. By setting up a chip - removing mechanism, the air pump can send high - pressure gas into the hollow part of the rotating shaft through the hollow part of the fixed rod and spray it out from the nozzle towards the inner wall of the pipe to clean the debris generated by grinding. When the rotating shaft rotates, the fifth gear drives the sixth gear to drive the cleaning ball to rotate, and under the action of centrifugal force, the cleaning ball closely adheres to the inner wall of the pipe again, realizing secondary cleaning of the inner wall of the pipe and ensuring the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings;

[0027] Figure 1 is the front - view three - dimensional view provided by the embodiment of the present invention;

[0028] Figure 2 is the rear - view three - dimensional view provided by the embodiment of the present invention;

[0029] Figure 3 is the side view provided by the embodiment of the present invention;

[0030] Figure 4 is the front - view sectional view provided by the embodiment of the present invention;

[0031] Figure 5 Stereogram of the moving seat provided by the embodiment of the present invention;

[0032] Figure 6 Stereogram of the sliding plate provided by the embodiment of the present invention;

[0033] Figure 7 Cross-sectional view of the mounting roller provided by the embodiment of the present invention;

[0034] Figure 8 Provided by the embodiment of the present invention Figure 7 Enlarged view at position A in

[0035] Figure 9 Cross-sectional view of the rotating shaft provided by the embodiment of the present invention;

[0036] In the figure: 1, base; 2, placing roller; 3, polishing mechanism; 301, lower grinding roller; 302, first gear; 303, second gear; 304, first motor; 305, support arm; 306, pressing roller; 307, moving seat; 308, slide rail; 309, lead screw; 310, threaded block; 311, second motor; 312, rotating shaft; 313, mounting roller; 314, upper grinding roller; 315, third gear; 316, third motor; 317, fourth gear; 318, driving block; 319, sliding plate; 320, first connecting rod; 321, first spring; 4, degreasing mechanism; 401, solvent chamber; 402, liquid injection pipe; 403, liquid injection chamber; 404, counterweight; 405, second connecting rod; 406, brush plate; 407, second spring; 408, piston; 409, first one-way valve; 410, second one-way valve; 411, liquid distributor; 412, spray hole; 5, chip removal mechanism; 501, fixed rod; 502, connecting seat; 503, air pump; 504, spray head; 505, fifth gear; 506, sleeve; 507, sixth gear; 508, spline shaft; 509, cleaning ball. Specific embodiments

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Refer to Figures 1-9As shown in the figure, the present invention provides a technical solution: a pipe polishing device, including a base 1, a placing roller 2 and a polishing mechanism 3. The placing roller 2 is symmetrically and rotatably installed on the surface of the base 1 for placing pipes. The polishing mechanism 3 is installed on the surface of the base 1. The polishing mechanism 3 includes a lower grinding roller 301, a support arm 305 and a moving seat 307. The lower grinding roller 301 is rotatably installed on the surface of the base 1 for grinding the outer circle of the pipe. One end of the lower grinding roller 301 is fixedly installed with a first gear 302. One end of each of the two placing rollers 2 is fixedly installed with a second gear 303. The first gear 302 meshes with both of the second gears 303. A first motor 304 is fixedly installed on the side wall of the base 1. The output end of the first motor 304 is fixedly connected to one of the placing rollers 2. By the first motor 304, one of the placing rollers 2 can be driven to rotate, and the other placing roller 2 can be driven to rotate synchronously through the first gear 302 and the second gear 303, and the lower grinding roller 301 can be driven to rotate in the opposite direction.

[0039] Referring to Figures 1-6 As shown in the figure, in a preferred embodiment, the support arm 305 is slidably installed on the surface of the base 1. One end of the support arm 305 is fixedly installed with a mounting plate. Pressing rollers 306 are symmetrically and rotatably installed on the surface of the mounting plate for limiting the pipe. The moving seat 307 is slidably installed on the surface of the base 1. Slide rails 308 are symmetrically and fixedly installed on the surface of the base 1. The moving seat 307 is slidably installed on the surface of the slide rails 308. A lead screw 309 is rotatably installed on the surface of the base 1. A threaded block 310 is fixedly installed in the inner cavity of the moving seat 307. The threaded block 310 is threadedly connected to the lead screw 309. A second motor 311 is fixedly installed on the side wall of the base 1. The output end of the second motor 311 is fixedly connected to the lead screw 309. By the second motor 311, the lead screw 309 can be driven to rotate, so as to drive the moving seat 307 to slide on the surface of the base 1.

[0040] Referring to Figures 1-6As shown, in a preferred embodiment, a rotating shaft 312 is rotatably installed on the side wall of the moving seat 307. One end of the rotating shaft 312 is fixedly installed with an installation roller 313. The surface of the installation roller 313 is sleeved with an upper grinding roller 314 for grinding the inner circle of the pipe. One end of the rotating shaft 312 is fixedly installed with a third gear 315. The surface of the moving seat 307 is fixedly installed with a third motor 316. The output end of the third motor 316 is fixedly installed with a fourth gear 317. The fourth gear 317 meshes with the third gear 315. By driving the fourth gear 317 to rotate through the third motor 316, the third gear 315 and the rotating shaft 312 can be driven to rotate, and the inner wall of the pipe is polished by the upper grinding roller 314. A driving block 318 is fixedly installed at the bottom of the moving seat 307. The driving block 318 is wedge-shaped. A sliding plate 319 is slidably installed in the inner cavity of the base 1. One end of the sliding plate 319 is wedge-shaped. A first connecting rod 320 is connected between the sliding plate 319 and the support arm 305. The surface of the first connecting rod 320 is sleeved with a first spring 321 for driving the sliding plate 319 to move upward. When the second motor 311 drives the moving seat 307 to move towards the placing roller 2, the sliding plate 319 is driven to move downward by the driving block 318, thereby driving the support arm 305 to move downward synchronously, so that the pressing roller 306 presses on the surface of the pipe to limit the pipe.

[0041] In a preferred embodiment, during use, the pipe to be polished is placed on the surface of the placing roller 2. The second motor 311 drives the moving seat 307 to move towards the placing roller 2. The driving block 318 drives the sliding plate 319 to move downward, thereby driving the support arm 305 to move downward synchronously, so that the pressing roller 306 presses on the surface of the pipe to limit the pipe, and the outer circle of the pipe contacts the surface of the lower grinding roller 301. Subsequently, one of the placing rollers 2 is driven to rotate by the first motor 304, and the other placing roller 2 is driven to rotate synchronously through the first gear 302 and the second gear 303, and the lower grinding roller 301 is driven to rotate in the opposite direction to polish the outer circle of the pipe; subsequently, when the upper grinding roller 314 extends into the inner circle of the pipe, the upper grinding roller 314 contacts the inner circle of the pipe. At this time, the fourth gear 317 can be driven to rotate by the third motor 316, thereby driving the third gear 315 and the rotating shaft 312 to rotate, and the inner wall of the pipe is polished by the upper grinding roller 314, realizing synchronous grinding of the inner and outer circles of the pipe and improving the grinding efficiency.

[0042] Refer to Figures 1-9As shown, in a preferred embodiment, an oil removal mechanism 4 is mounted on the surface of the mounting roller 313 for removing the cutting fluid from the inner circle of the pipe. The oil removal mechanism 4 includes a solvent chamber 401, a counterweight 404, and a brush plate 406. A solvent chamber 401 is provided in the inner cavity of the mounting roller 313 for storing the cleaning agent. A liquid injection pipe 402 is mounted on the side wall of the mounting roller 313. Liquid injection chambers 403 are symmetrically provided in the inner cavity of the mounting roller 313. A counterweight 404 is slidably mounted in the inner cavity of the liquid injection chamber 403. A second connecting rod 405 is fixedly mounted on the surface of the counterweight 404. One end of the second connecting rod 405 is fixedly mounted with a brush plate 406 for brushing the cutting fluid remaining on the inner wall of the pipe. When the third motor 316 drives the mounting roller 313 to rotate, under the action of centrifugal force, the counterweight 404 is driven to move towards the outer wall of the mounting roller 313, driving the brush plate 406 to move synchronously, so that the brush plate 406 is closely attached to the inner wall of the pipe, ensuring the oil removal effect.

[0043] Referring to Figures 1-9 As shown, in a preferred embodiment, a second spring 407 is mounted in the liquid injection chamber 403. One end of the second spring 407 is fixedly connected to the mounting roller 313, and the other end of the second spring 407 is fixedly connected to the counterweight 404 for driving the counterweight 404 to move towards the inner cavity of the liquid injection chamber 403. A piston 408 is fixedly mounted on the surface of the counterweight 404. A first one-way valve 409 and a second one-way valve 410 are mounted on the side wall of the liquid injection chamber 403. The second one-way valve 410 is unidirectionally conductive towards the inner cavity of the liquid injection chamber 403 for liquid inlet. The first one-way valve 409 is unidirectionally conductive towards the outer wall of the liquid injection chamber 403 for liquid outlet. The second one-way valve 410 is communicated with the solvent chamber 401. A liquid distributor 411 is fixedly mounted on the side wall of the mounting roller 313. A plurality of spray holes 412 are provided on the surface of the liquid distributor 411. The spray holes 412 are communicated with the first one-way valve 409. When the upper grinding roller 314 is inserted into the inner wall of the pipe, it is in a non-central position of the pipe. Under the action of centrifugal force, the brush plate 406 is closely attached to the inner wall of the pipe. Therefore, the piston 408 can be driven to reciprocate in the liquid injection chamber 403, enabling the first one-way valve 409 and the second one-way valve 410 to be alternately conductive, pumping the cleaning agent in the solvent chamber 401 into the liquid injection chamber 403, and spraying it onto the inner wall of the pipe through the spray holes 412 to dissolve the remaining cutting fluid.

[0044] In a preferred embodiment, when the third motor 316 drives the mounting roller 313 to rotate, under the action of centrifugal force, the driving counterweight 404 moves towards the outer wall direction of the mounting roller 313, driving the brush plate 406 to move synchronously, so that the brush plate 406 closely adheres to the inner wall of the pipe. When the upper grinding roller 314 is inserted into the inner wall of the pipe, it is in a non-centered position in the pipe. Under the action of centrifugal force, the brush plate 406 is closely adhered to the inner wall of the pipe. Therefore, the piston 408 can be driven to reciprocate in the liquid injection cavity 403, causing the first one-way valve 409 and the second one-way valve 410 to be alternately conducted, pumping the cleaning agent in the solvent cavity 401 into the liquid injection cavity 403, and spraying it onto the inner wall of the pipe through the spray holes 412, dissolving the residual cutting fluid, and removing the cutting fluid in cooperation with the brush plate 406 to ensure the polishing effect.

[0045] Referring to Figures 1-9 As shown, in a preferred embodiment, a chip removal mechanism 5 is installed on the surface of the rotating shaft 312 for cleaning the debris inside the pipe. The chip removal mechanism 5 includes a fixed rod 501 and a spray head 504. The rotating shaft 312 is hollow. The fixed rod 501 is inserted into the hollow part of the rotating shaft 312. A connecting seat 502 is fixedly installed on the side wall of the moving seat 307, and the fixed rod 501 is fixedly connected to the connecting seat 502. An air pump 503 is fixedly installed on the surface of the moving seat 307. The fixed rod 501 is hollow, and the hollow part of the fixed rod 501 communicates with the hollow part of the rotating shaft 312. A trachea is connected between the air outlet end of the air pump 503 and the hollow part of the fixed rod 501. The spray heads 504 are symmetrically installed on the side wall of the rotating shaft 312. One end of the spray head 504 communicates with the hollow part of the rotating shaft 312. The high-pressure gas can be sent into the hollow part of the rotating shaft 312 through the hollow part of the fixed rod 501 by the air pump 503 and sprayed onto the inner wall of the pipe through the spray heads 504 to clean the debris generated by grinding.

[0046] Referring to Figures 1-9 As shown, in a preferred embodiment, a fifth gear 505 is fixedly installed at one end of the fixed rod 501. A sleeve 506 is rotatably installed on the side wall of the rotating shaft 312. A sixth gear 507 is fixedly installed at one end of the sleeve 506. The sixth gear 507 meshes with the fifth gear 505. A spline shaft 508 is inserted into the inner cavity of the sleeve 506. A spline groove is provided in the inner cavity of the sleeve 506, and the spline groove meshes with the spline shaft 508. A cleaning ball 509 is fixedly installed at one end of the spline shaft 508 for cleaning the debris on the inner wall of the pipe. When the rotating shaft 312 rotates, the sixth gear 507 can be driven by the fifth gear 505 to drive the cleaning ball 509 to rotate. And under the action of centrifugal force, the cleaning ball 509 closely adheres to the inner wall of the pipe again, realizing the secondary cleaning of the inner wall of the pipe and ensuring the cleaning effect.

[0047] In a preferred embodiment, during use, the high-pressure gas can be sent into the hollow part of the rotating shaft 312 through the hollow part of the fixed rod 501 by the air pump 503, and sprayed onto the inner wall of the pipe by the nozzle 504 to clean the debris generated by grinding. When the rotating shaft 312 rotates, the fifth gear 505 can drive the sixth gear 507 to drive the cleaning ball 509 to rotate. Under the action of centrifugal force, the cleaning ball 509 is pressed against the inner wall of the pipe again, realizing the secondary cleaning of the inner wall of the pipe and ensuring the cleaning effect.

[0048] Specifically, the working principle of this pipe polishing device is as follows: During use, the pipe to be polished is placed on the placing roller 2. The second motor 311 drives the moving seat 307 to move towards the placing roller 2. The driving block 318 drives the sliding plate 319 to move downward, thereby driving the supporting arm 305 to move downward synchronously, so that the pressing roller 306 presses on the surface of the pipe to limit the pipe, making the outer circle of the pipe contact the surface of the lower grinding roller 301. Subsequently, the first motor 304 drives one of the placing rollers 2 to rotate, and drives the other placing roller 2 to rotate synchronously through the first gear 302 and the second gear 303, and drives the lower grinding roller 301 to rotate in the opposite direction to polish the outer circle of the pipe. Subsequently, when the upper grinding roller 314 extends into the inner circle of the pipe, the upper grinding roller 314 contacts the inner circle of the pipe. At this time, the third motor 316 can drive the fourth gear 317 to rotate, thereby driving the third gear 315 and the rotating shaft 312 to rotate, and polishing the inner wall of the pipe through the upper grinding roller 314, realizing the synchronous grinding of the inner and outer circles of the pipe and improving the grinding efficiency.

[0049] When the third motor 316 drives the mounting roller 313 to rotate, under the action of centrifugal force, the driving counterweight 404 moves towards the outer wall of the mounting roller 313, driving the brush plate 406 to move synchronously, making the brush plate 406 press against the inner wall of the pipe. When the upper grinding roller 314 is inserted into the inner wall of the pipe, it is in a non-centered position in the pipe. Under the action of centrifugal force, the brush plate 406 is in close contact with the inner wall of the pipe. Therefore, the piston 408 can be driven to reciprocate in the liquid injection cavity 403, making the first one-way valve 409 and the second one-way valve 410 conduct alternately, pumping the cleaning agent in the solvent cavity 401 into the liquid injection cavity 403, and spraying it onto the inner wall of the pipe through the spray holes 412 to dissolve the residual cutting fluid and remove the cutting fluid in cooperation with the brush plate 406 to ensure the polishing effect.

[0050] The high-pressure gas can be sent into the hollow part of the rotating shaft 312 through the hollow part of the fixed rod 501 by the air pump 503, and sprayed onto the inner wall of the pipe by the nozzle 504 to clean the debris generated by grinding. When the rotating shaft 312 rotates, the fifth gear 505 can drive the sixth gear 507 to drive the cleaning ball 509 to rotate. Under the action of centrifugal force, the cleaning ball 509 is pressed against the inner wall of the pipe again, realizing the secondary cleaning of the inner wall of the pipe and ensuring the cleaning effect.

[0051] A pipe polishing method, applicable to the above-mentioned pipe polishing device, includes the following steps:

[0052] S1: Polishing; Place the pipe to be polished on the surface of the placing roller 2. Drive the moving seat 307 to move towards the placing roller 2 by the second motor 311. Press the pressing roller 306 against the surface of the pipe, so that the outer ring of the pipe contacts the surface of the lower grinding roller 301. Subsequently, drive the placing roller 2 to rotate synchronously by the first motor 304, and drive the lower grinding roller 301 to rotate in the opposite direction to polish the outer ring of the pipe. Subsequently, when the upper grinding roller 314 extends into the inner ring of the pipe, the upper grinding roller 314 contacts the inner ring of the pipe. At this time, drive the rotating shaft 312 to rotate by the third motor 316, and polish the inner wall of the pipe through the upper grinding roller 314 to achieve synchronous grinding of the inner and outer rings of the pipe;

[0053] S2: Degreasing; When the third motor 316 drives the mounting roller 313 to rotate, under the action of centrifugal force, drive the counterweight 404 to move towards the outer wall of the mounting roller 313, drive the brush plate 406 to move synchronously, so that the brush plate 406 closely adheres to the inner wall of the pipe. When the upper grinding roller 314 is inserted into the inner wall of the pipe, it is in a non-central position in the pipe, drive the piston 408 to reciprocate in the liquid injection cavity 403, so that the first one-way valve 409 and the second one-way valve 410 are alternately conducted, pump the cleaning agent in the solvent cavity 401 into the liquid injection cavity 403, and spray it out from the spray holes 412 towards the inner wall of the pipe to dissolve the residual cutting fluid, and remove the cutting fluid in cooperation with the brush plate 406;

[0054] S3: Cleaning; Send high-pressure gas through the hollow part of the fixed rod 501 into the hollow part of the rotating shaft 312 by the air pump 503, and spray it out from the nozzle 504 towards the inner wall of the pipe. When the rotating shaft 312 rotates, drive the sixth gear 507 to drive the cleaning ball 509 to rotate by itself through the fifth gear 505, and under the action of centrifugal force, make the cleaning ball 509 closely adhere to the inner wall of the pipe again to achieve secondary cleaning of the inner wall of the pipe.

[0055] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipe polishing device, characterized in that It includes a base (1), a placing roller (2) and a polishing mechanism (3). The placing roller (2) is symmetrically and rotatably installed on the surface of the base (1) for placing pipes. The polishing mechanism (3) is installed on the surface of the base (1), and the polishing mechanism (3) includes: A lower grinding roller (301) which is rotatably installed on the surface of the base (1) for grinding the outer circle of the pipe; A support arm (305) which is slidably installed on the surface of the base (1). One end of the support arm (305) is fixedly installed with a mounting plate, and pressing rollers (306) are symmetrically and rotatably installed on the surface of the mounting plate; A moving seat (307) which is slidably installed on the surface of the base (1). A rotating shaft (312) is rotatably installed on the side wall of the moving seat (307). One end of the rotating shaft (312) is fixedly installed with a mounting roller (313), and an upper grinding roller (314) is sleeved on the surface of the mounting roller (313); An oil removing mechanism (4) is installed on the surface of the mounting roller (313) for removing the cutting fluid from the inner circle of the pipe. The oil removing mechanism (4) includes a solvent chamber (401), a counterweight (404) and a brush plate (406). A solvent chamber (401) is opened in the inner cavity of the mounting roller (313) for storing a cleaning agent. A liquid injection pipe (402) is installed on the side wall of the mounting roller (313). Liquid injection chambers (403) are symmetrically opened in the inner cavity of the mounting roller (313). Counterweights (404) are slidably installed in the inner cavities of the liquid injection chambers (403). A second connecting rod (405) is fixedly installed on the surface of the counterweight (404), and one end of the second connecting rod (405) is fixedly installed with a brush plate (406) for brushing the cutting fluid remaining on the inner wall of the pipe; A second spring (407) is installed in the liquid injection chamber (403). One end of the second spring (407) is fixedly connected with the mounting roller (313), and the other end of the second spring (407) is fixedly connected with the counterweight (404) for driving the counterweight (404) to move towards the inner cavity of the liquid injection chamber (403). A piston (408) is fixedly installed on the surface of the counterweight (404); A first one-way valve (409) and a second one-way valve (410) are installed on the side wall of the liquid injection chamber (403). The second one-way valve (410) is communicated with the solvent chamber (401). A liquid distribution head (411) is fixedly installed on the side wall of the mounting roller (313). A plurality of spray holes (412) are opened on the surface of the liquid distribution head (411), and the spray holes (412) are communicated with the first one-way valve (409); A chip removing mechanism (5) is mounted on the surface of the rotating shaft (312) for cleaning the chips inside the inner circle of the pipe. The chip removing mechanism (5) includes a fixing rod (501) and a spray head (504). The rotating shaft (312) is hollow. The fixing rod (501) is inserted into the hollow part of the rotating shaft (312). A connecting seat (502) is fixedly mounted on the side wall of the moving seat (307). The fixing rod (501) is fixedly connected with the connecting seat (502). An air pump (503) is fixedly mounted on the surface of the moving seat (307). The fixing rod (501) is hollow, and the hollow part of the fixing rod (501) is communicated with the hollow part of the rotating shaft (312). A trachea is connected between the air outlet end of the air pump (503) and the hollow part of the fixing rod (501). Spray heads (504) are symmetrically mounted on the side wall of the rotating shaft (312). One end of the spray head (504) is communicated with the hollow part of the rotating shaft (312). A fifth gear (505) is fixedly mounted at one end of the fixing rod (501). A sleeve (506) is rotatably mounted on the side wall of the rotating shaft (312). A sixth gear (507) is fixedly mounted at one end of the sleeve (506). The sixth gear (507) is meshed with the fifth gear (505). A spline shaft (508) is inserted into the inner cavity of the sleeve (506). A spline groove is formed in the inner cavity of the sleeve (506). The spline groove is meshed with the spline shaft (508). A cleaning ball (509) is fixedly mounted at one end of the spline shaft (508) for cleaning the chips on the inner wall of the pipe. Under the action of centrifugal force, the brush plate (406) is in close contact with the inner wall of the pipe. Therefore, the piston (408) can be driven to reciprocate in the liquid injection cavity (403), so that the first one-way valve (409) and the second one-way valve (410) are alternately conducted, the cleaning agent in the solvent cavity (401) is pumped into the liquid injection cavity (403), and is sprayed onto the inner wall of the pipe through the spray holes (412) to dissolve the residual cutting fluid.

2. The tube polishing device according to claim 1, characterized in that, A first gear (302) is fixedly mounted at one end of the lower grinding roller (301). Second gears (303) are fixedly mounted at one end of each of the two placing rollers (2). The first gear (302) is meshed with both of the second gears (303). A first motor (304) is fixedly mounted on the side wall of the base (1). The output end of the first motor (304) is fixedly connected with one of the placing rollers (2). Slide rails (308) are symmetrically and fixedly mounted on the surface of the base (1). The moving seat (307) is slidably mounted on the surface of the slide rails (308). A lead screw (309) is rotatably mounted on the surface of the base (1). A threaded block (310) is fixedly mounted in the inner cavity of the moving seat (307). The threaded block (310) is in threaded connection with the lead screw (309). A second motor (311) is fixedly mounted on the side wall of the base (1). The output end of the second motor (311) is fixedly connected with the lead screw (309).

3. A pipe polishing device according to claim 2, wherein One end of the rotating shaft (312) is fixedly installed with a third gear (315). A third motor (316) is fixedly installed on the surface of the moving seat (307). The output end of the third motor (316) is fixedly installed with a fourth gear (317), and the fourth gear (317) meshes with the third gear (315).

4. A pipe polishing device according to claim 3, characterized in that, A driving block (318) is fixedly installed at the bottom of the moving seat (307). The driving block (318) is wedge-shaped. A sliding plate (319) is slidably installed in the inner cavity of the base (1). One end of the sliding plate (319) is wedge-shaped. A first connecting rod (320) is connected between the sliding plate (319) and the support arm (305). A first spring (321) is sleeved on the surface of the first connecting rod (320) for driving the sliding plate (319) to move upward.

5. A pipe polishing method, applicable to the pipe polishing device described in claim 4 above, characterized in that, It includes the following steps: S1: Polishing; Place the pipe to be polished on the surface of the placing roller (2). Drive the moving seat (307) to move towards the placing roller (2) by the second motor (311). The pressing roller (306) presses on the surface of the pipe, making the outer circle of the pipe contact the surface of the lower grinding roller (301). Then drive the placing roller (2) to rotate synchronously by the first motor (304), and drive the lower grinding roller (301) to rotate in the opposite direction to polish the outer circle of the pipe. Subsequently, when the upper grinding roller (314) extends into the inner circle of the pipe, the upper grinding roller (314) contacts the inner circle of the pipe. At this time, drive the rotating shaft (312) to rotate by the third motor (316), and polish the inner wall of the pipe through the upper grinding roller (314) to achieve synchronous grinding of the inner and outer circles of the pipe; S2: Degreasing; When the third motor (316) drives the installation roller (313) to rotate, under the action of centrifugal force, drive the counterweight block (404) to move towards the outer wall of the installation roller (313), drive the brush plate (406) to move synchronously, and make the brush plate (406) closely adhere to the inner wall of the pipe. When the upper grinding roller (314) is inserted into the inner wall of the pipe, it is at a non-central position of the pipe, drive the piston (408) to reciprocate in the liquid injection cavity (403), make the first one-way valve (409) and the second one-way valve (410) conduct alternately, pump the cleaning agent in the solvent cavity (401) into the liquid injection cavity (403), and spray it out from the spray holes (412) towards the inner wall of the pipe to dissolve the remaining cutting fluid, and remove the cutting fluid in cooperation with the brush plate (406); S3: Cleaning; Send high-pressure gas through the hollow part of the fixed rod (501) into the hollow part of the rotating shaft (312) by the air pump (503), and spray it out from the nozzle (504) towards the inner wall of the pipe. When the rotating shaft (312) rotates, drive the sixth gear (507) to drive the cleaning ball (509) to rotate by itself through the fifth gear (505), and under the action of centrifugal force, make the cleaning ball (509) closely adhere to the inner wall of the pipe again to achieve secondary cleaning of the inner wall of the pipe.

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