Round tube polishing machine

Abstract

The utility model relates to the field of polishing equipment, in particular to a round tube polishing machine which comprises a main machine frame, a mounting plate and at least one polishing mechanism. An annular guide rail is fixed to the main machine frame, the mounting plate is rotationally connected to the annular guide rail, and a rotation driving mechanism is fixed to the main machine frame. A grinding channel is formed in the middle of the mounting plate; the grinding mechanism comprises a grinding driving assembly and a grinding wheel in driving connection with the grinding driving assembly. The waxing mechanism is fixed to the grinding driving assembly, the waxing mechanism is provided with a spray head and a grinding channel for the round pipe to penetrate through, the grinding driving assembly drives the grinding wheel to grind the round pipe in the grinding channel, and subsequently, the waxing mechanism sprays wax to the grinding wheel through the spray head, so that the polishing work is completed in the grinding process. And the rotating driving mechanism drives the mounting plate to rotate on the annular guide rail, the circumferential side of the circular pipe is rotationally polished, and the polishing efficiency and the polishing effect are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of polishing equipment, specifically relates to a round pipe polishing machine. BACKGROUND

[0002] Polishing equipment is mainly used for fine processing of workpiece surface to achieve the purpose of removing surface defects, improving smoothness and flatness. This kind of equipment uses different types of polishing tools (such as polishing wheel, polishing cloth, polishing brush, etc.) and polishing medium (such as polishing paste, grinding fluid, etc.), combined with appropriate pressure, speed and motion trajectory, to rub and grind the workpiece surface, thereby improving its appearance quality.

[0003] The design of polishing equipment is various to adapt to the polishing needs of workpieces of different materials, shapes and sizes. For example, the working principle of round pipe polishing equipment is usually that the polishing wheel is driven by a motor to rotate at high speed, and the action of a guide wheel is matched to make the polishing wheel grind the workpiece surface while driving the workpiece to walk forward, realizing overall polishing of the workpiece surface. By adjusting the feed amount of the polishing wheel and the feed speed of the workpiece, the polishing effect can be flexibly controlled to meet different processing needs.

[0004] Among them, the application number is CN202010884388.1, and the name is a bent pipe polishing equipment. The polishing device is revolved around the bent pipe by gear meshing, the self-rotation process of the flexible grinding wheel is realized at the same time, and the grinding and polishing of the bent pipe are completed. However, it only relies on friction to grind the pipe body, and the grinding effect is poor. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a round pipe polishing machine, aiming at improving the problem that the conventional polishing machine only relies on friction to grind the pipe body and the grinding effect is poor.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A round pipe polishing machine, comprising a main frame, a mounting plate and at least one grinding mechanism;

[0008] The main frame is fixed with a ring-shaped guide rail, the mounting plate is rotationally connected on the ring-shaped guide rail, the main frame is fixed with a rotation driving mechanism, the driving end of the rotation driving mechanism is drivingly connected with the mounting plate, and the rotation driving mechanism drives the mounting plate to move on the ring-shaped guide rail;

[0009] The middle part of the mounting plate is provided with a grinding passage, and the grinding passage and the ring-shaped guide rail are concentric; the grinding mechanism comprises a grinding driving assembly and a grinding wheel drivingly connected with the grinding driving assembly, the grinding wheel is located in the grinding passage, and the grinding driving assembly drives the grinding wheel to rotate;

[0010] The polishing drive assembly is fixed with a waxing mechanism, the waxing mechanism is provided with a spray head, and the opening of the spray head faces the upper end of the polishing wheel.

[0011] Further, a first gap is formed in the mounting plate, the first gap is communicated with the polishing channel, a second gap is formed in the annular guide rail, and a third gap is formed in the main frame.

[0012] Further, the mounting plate is fixed with a sliding drive assembly, the sliding drive assembly corresponds to the polishing mechanism one by one, and the polishing drive assembly is fixed on the sliding drive assembly.

[0013] Further, the sliding drive assembly comprises a sliding motor, two oppositely arranged fixed vertical plates and two oppositely arranged driving vertical plates between the fixed vertical plates.

[0014] The fixed vertical plates are connected with guide columns, the sliding motor is fixedly arranged on the outer side of one of the fixed vertical plates, the driving end of the sliding motor penetrates through the fixed vertical plate and is drivingly connected with a driving lead screw, the driving lead screw is arranged on the two driving vertical plates, and the driving lead screw is movably connected with the driving vertical plates through bearings.

[0015] A driving block is sleeved on the driving lead screw, the driving block is located between the two driving vertical plates, a guide sliding block is sleeved on the guide column, and a sliding plate is fixed on the top surfaces of the guide sliding block and the driving block, and the polishing drive assembly is fixed on the sliding plate.

[0016] Further, the polishing drive assembly comprises a shell and a polishing motor, and the shell is fixed on the sliding drive assembly.

[0017] A driving motor is fixed on the shell, and the driving end of the polishing motor penetrates through the shell and is drivingly connected with the driving motor.

[0018] The driving handle extends outwardly on the driven wheel, and the driving handle penetrates through the shell and is drivingly connected with the polishing wheel.

[0019] Further, the number of the polishing mechanisms is three, and the three polishing mechanisms are arranged at intervals on the periphery of the polishing channel.

[0020] Further, the rotating drive mechanism comprises a rotating motor, a rocker arm and a connecting rod, the rotating motor is fixed on the main frame, one end of the rocker arm is drivingly connected with the driving end of the rotating motor, and the two ends of the connecting rod are hingedly connected with the other end of the rocker arm and the mounting plate respectively.

[0021] Further, the main frame is fixed with a circular arc sliding rail seat, the size of the circular arc sliding rail seat is same with the size of the annular guide rail, the annular guide rail is fixed on the circular arc sliding rail seat, the inner side surface of the circular arc sliding rail seat is fixed with an outward protruding eave, and the inner side surface of the annular guide rail is in abutment with the eave.

[0022] Further, the outer side surface of the annular guide rail is provided with a V-shaped protrusion, and the V-shaped protrusion protrudes from the circular arc sliding rail seat.

[0023] The mounting plate is rotationally provided with a V-shaped pulley and a track wheel through bearings, the V-shaped pulley is slidingly arranged on the V-shaped protrusion, and the track wheel is abuttingly arranged on the inner side surface of the circular arc sliding rail seat.

[0024] The track wheel is abuttingly arranged on the inner side surface of the circular arc sliding rail seat.

[0025] Further, the height of the eave is less than the thickness of the annular guide rail, the track wheel is provided with a stepped portion, the inner stepped surface of the stepped portion is in abutment with the inner side surface of the circular arc sliding rail seat, and the outer stepped surface of the stepped portion is located on the outer side of the eave and is in abutment with the inner side surface of the annular guide rail.

[0026] Compared with the background art, the present application has the following advantages:

[0027] The polishing channel is used for the circular pipe to pass through, the polishing drive assembly drives the polishing wheel to polish and polish the circular pipe in the polishing channel, the waxing mechanism sprays wax on the polishing wheel through the nozzle, and the polishing work is completed in the polishing process, thereby effectively improving the polishing efficiency and the polishing effect. Meanwhile, the annular guide rail bears the mounting plate, and the rotating drive mechanism drives the mounting plate to rotate on the annular guide rail, so that the polishing wheel and the opening center of the polishing channel rotate in a circular shape, and the circular pipe is rotated and polished on the side. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structure schematic view of the circular pipe polishing machine.

[0029] Figure 2 It is a structure schematic view of the circular pipe polishing machine.

[0030] Figure 3 It is an exploded front view of the partial structure of the circular pipe polishing machine.

[0031] Figure 4 It is an exploded rear view of the partial structure of the circular pipe polishing machine.

[0032] Figure 5 It is a cross-sectional structure schematic view of the circular pipe polishing machine.

[0033] Figure 6 It is the A part structure amplification schematic view of the round pipe polishing machine of the utility model;

[0034] Figure 7 It is the polishing mechanism part structure schematic view of the round pipe polishing machine of the utility model;

[0035] Figure 8 It is the sliding drive assembly structure schematic view of the round pipe polishing machine of the utility model.

[0036] Mark explanation:

[0037] 1, main frame;11, base;12, mounting frame;121, third gap;122, circular arc slide rail seat;1221, fourth gap;1222, eaves;123, rotary drive mechanism;1231, rotary motor;1232, rocker arm;1233, connecting rod;13, reinforcing plate;

[0038] 2, mounting plate;21, polishing channel;22, first gap;23, V-shaped pulley;24, track wheel;241, step portion;2411, outer step surface;2412, inner step surface;25, drive plate;251, hinged seat;26, mounting groove;

[0039] 3, annular guide rail;31, second gap;32, V-shaped protrusion;

[0040] 4, polishing mechanism;41, polishing drive assembly;411, polishing motor;412, housing;4121, driving wheel;4122, driven wheel;4123, transmission part;413, drive handle;42, polishing wheel;43, waxing mechanism;431, spray head;

[0041] 5, sliding drive assembly;51, sliding motor;511, drive screw;5111, drive block;52, fixed vertical plate;521, guide rod;5211, guide slider;53, drive vertical plate;54, sliding plate;

[0042] 6, round pipe. Specific implementation

[0043] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further detailed to the utility model by combining with the drawings and examples.It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0044] In addition, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element of the present application must have a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] When an element is referred to as being "fixed to" or "set to" or "provided on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0046] Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0047] Embodiment

[0048] Please refer to Figures 1-8 The embodiment provides a round pipe polishing machine, which comprises a main frame 1, a mounting plate 2 and at least one polishing mechanism 4. The main frame 1 is fixed with a ring-shaped guide rail, and the mounting plate 2 is rotationally connected to the ring-shaped guide rail 3. The main frame 1 is fixed with a rotating driving mechanism 123, the driving end of the rotating driving mechanism 123 is drivingly connected with the mounting plate 2, and the rotating driving mechanism 123 drives the mounting plate 2 to move on the ring-shaped guide rail 3. The middle part of the mounting plate 2 is provided with a polishing channel 21, and the polishing channel 21 and the ring-shaped guide rail 3 are concentric, that is, the opening center of the polishing channel 21 and the center of the ring-shaped guide rail 3 coincide with each other. The polishing mechanism 4 comprises a polishing driving assembly 41 and a polishing wheel 42 drivingly connected with the polishing driving assembly 41, the polishing wheel 42 is located in the polishing channel 21, and the polishing driving assembly 41 drives the polishing wheel 42 to rotate. The polishing driving assembly 41 is fixed with a waxing mechanism 43, the waxing mechanism 43 is provided with a spray head 431, and the opening of the spray head 431 faces the upper end of the polishing wheel 42. Similarly, the spray head 431 can be provided as a water spray head 431 to cool the polishing position.

[0049] The polishing channel 21 is used for the circular pipe 6 to pass through, the polishing drive assembly 41 drives the polishing wheel 42 to polish the circular pipe 6 in the polishing channel 21, and the wax spraying mechanism 43 sprays wax on the polishing wheel 42 through the nozzle 431, so that the polishing work is completed during the polishing process, and the polishing efficiency and effect are effectively improved. At the same time, the annular guide rail 3 bears the mounting plate 2, and the rotating drive mechanism 123 drives the mounting plate 2 to rotate on the annular guide rail 3, so that the polishing wheel 42 rotates with the opening center of the polishing channel 21 being circular, and the rotating polishing is performed on the side of the circular pipe 6. It is ensured that each part of the outer side of the circular pipe 6 is polished.

[0050] In the embodiment, the main rack 1 includes a base 11 and a mounting rack 12, the mounting rack 12 is fixed on the base 11 and perpendicular to the base 11. The base 11 lowers the overall gravity center of the device and improves the overall stability; the mounting rack 12 is used for mounting the mounting plate 2, the polishing mechanism 4 and the rotating drive mechanism 123. The reinforcing plate 13 is fixed between the mounting rack 12 and the base 11, the reinforcing plate strengthens the connection strength of the two, and further improves the overall stability of the device.

[0051] The first gap 22 is arranged on the mounting plate 2 and communicates with the polishing channel 21. The second gap 31 is arranged on the annular guide rail 3. The third gap 121 is arranged on the main rack 1, and in the embodiment, the third gap 121 is arranged on the mounting rack 12. The first gap 22, the second gap 31 and the third gap 121 are arranged in sequence in the extension direction of the polishing channel 21 and communicate with each other. The first gap 22, the second gap 31 and the third gap 121 connect the side of the polishing channel 21 with the outside, improve the installation space of the circular pipe 6, so as to adapt to different shapes of the circular pipe 6, such as the elbow pipe and the special-shaped pipe, and facilitate the position adjustment of the circular pipe 6 during the polishing process, so as to polish each position of the elbow pipe with different shapes, and have better adaptability.

[0052] The main rack 1 is fixed with a circular arc sliding rail seat 122. In the embodiment, the circular arc sliding rail seat 122 is fixed on the mounting rack 12. The size of the circular arc sliding rail seat 122 is the same as that of the annular guide rail 3, that is, the two ends of the circular arc sliding rail seat 122 are spaced apart to form a fourth gap 1221, and the first gap 22, the second gap 31, the fourth gap 1221 and the third gap 121 are arranged in sequence in the extension direction of the polishing channel 21. The annular guide rail 3 is fixed on the circular arc sliding rail seat 122, and the head and tail of the annular guide rail 3 and the circular arc sliding rail seat 122 correspond to each other. The inner side of the circular arc sliding rail seat 122 is fixed with an outwardly protruding eave 1222, and the inner side of the annular guide rail 3 abuts against the eave 1222. The circular arc sliding rail seat 122 increases the contact area between the mounting rack 12 and the annular guide rail 3, and provides stable support force for the annular guide rail 3; and the eave 1222 on the inner side of the circular arc sliding rail seat 122 abuts against the inner side of the annular guide rail 3, which limits the position of the annular guide rail 3 and ensures that the annular guide rail 3 and the polishing channel 21 can be concentrically stable, thereby ensuring that the polishing process is more accurate.

[0053] A V-shaped protrusion 32 is arranged on the outer side of the annular guide rail 3, and the V-shaped protrusion 32 protrudes from the circular arc sliding rail seat 122. The mounting plate 2 is rotatably provided with a V-shaped pulley 23 and a track wheel 24 through a bearing, and the V-shaped pulley 23 is slidably arranged on the V-shaped protrusion 32. At the same time, the circular arc sliding rail seat 122 raises the annular guide rail 3, so that the V-shaped protrusion 32 and the mounting rack 12 have a space for the V-shaped pulley 23 to slide, avoiding the mutual contact between the V-shaped pulley 23 and the mounting rack 12, which causes excessive friction and increases energy loss. The track wheel 24 is arranged on the inner side of the circular arc sliding rail seat 122, and the track wheel 24 guides the mounting plate 2 on the inner side, and the V-shaped pulley 23 guides the mounting plate 2 on the outer side, which together ensures the accuracy of the rotating path of the mounting plate 2, and limits the mounting plate 2 from both sides, ensuring that the mounting plate 2 has good stability during rotating polishing.

[0054] Please refer to Figure 5 and Figure 6 , in the embodiment, the height of the eave 1222 is less than the thickness of the annular guide rail 3. The track wheel 24 is provided with a stepped portion 241, the inner step surface 2412 of the stepped portion 241 abuts against the inner side of the circular arc sliding rail seat 122, and the outer step surface 2411 of the stepped portion 241 is located on the outer side of the eave 1222 and abuts against the inner side of the annular guide rail 3. The stepped portion 241 simultaneously contacts the annular guide rail 3 and the circular arc sliding rail seat 122, further ensuring the stability of the rotating path of the mounting plate 2.

[0055] In this embodiment, the number of polishing mechanisms 4 is three, and the three polishing mechanisms 4 are arranged at intervals on the periphery of the polishing channel 21. Similarly, the number of polishing mechanisms 4 can also be two or more, and the arrangement of three polishing mechanisms 4 effectively improves the polishing efficiency of the equipment.

[0056] Further, the mounting plate 2 is fixed with a sliding drive assembly 5, and the sliding drive assembly 5 corresponds to the polishing mechanism 4 one by one, and the polishing drive assembly 41 is fixed on the sliding drive assembly 5. That is, the number of sliding drive assemblies 5 is also three, and the three sliding drive assemblies 5 respectively drive the three polishing drive assemblies 41 to move towards or away from the polishing channel 21, and adjust the position of the polishing wheel 42 of the polishing drive assembly to adapt to the polishing needs of pipes 6 of different diameters, and improve the practicability of the whole equipment.

[0057] Please refer to Figure 7 and Figure 8 In this embodiment, the sliding drive assembly 5 includes a sliding motor 51, two oppositely arranged fixed vertical plates 52, and two oppositely arranged drive vertical plates 53 between the fixed vertical plates 52. The fixed vertical plates 52 are connected by a guide column, and the sliding motor 51 is fixedly arranged on the outer side surface of one of the fixed vertical plates 52. The driving end of the sliding motor 51 penetrates through the fixed vertical plate 52 and drives the driving lead screw 511 connected thereto. The driving lead screw 511 is provided on the two drive vertical plates 53, and the driving lead screw 511 is movably connected with the drive vertical plate 53 through a bearing. The driving lead screw 511 is sleeved with a driving block 5111, and the driving block 5111 is located between the two drive vertical plates 53. In this embodiment, the driving block 5111 is threadedly connected with the driving lead screw 511. The guide column is sleeved with a guide sliding block 5211, and the guide sliding block 5211 and the top surface of the driving block 5111 are fixed with a sliding plate 54, and the polishing drive assembly 41 is fixed on the sliding plate 54. The sliding motor 51 drives the driving lead screw 511 to rotate, and the two drive vertical plates 53 support the driving lead screw 511 to ensure the stability of the driving lead screw 511 during rotation. The driving lead screw 511 rotates to drive the driving block 5111 to move in the length direction of the driving lead screw 511, thereby driving the polishing drive assembly 41 to move forward or backward. The two fixed vertical plates 52 support the sliding motor 51 and the polishing drive assembly 41, and the guide column guides the travel path of the polishing drive assembly 41 to ensure the accuracy of the movement path of the polishing drive assembly 41. Further, the mounting plate 2 is provided with three mounting grooves 26, and the three pairs of fixed vertical plates 52 and the three pairs of support vertical plates are fixed in the three mounting grooves 26 respectively, and the width of the mounting groove 26 is the same as the width of the fixed vertical plate 52, that is, the inner side surface of the mounting groove 26 and the two sides of the fixed vertical plate 52 are mutually fitted, thereby positioning the mounting direction of the mounting plate, and further ensuring the accuracy of the driving path of the polishing drive assembly 41 by the sliding drive assembly 5.

[0058] Please refer toFigure 7 As shown in the figure, the polishing driving assembly 41 comprises a shell 412 and a polishing motor 411, and the shell 412 is fixed on the sliding driving assembly 5. Bearings are arranged in the shell 412 to provide a driving wheel 4121 and a driven wheel 4122, and a transmission member 4123 is arranged around the driving wheel 4121 and the driven wheel 4122. In this embodiment, the transmission member 4123 is a transmission belt. Similarly, the driving wheel 4121, the driven wheel 4122 and the transmission member 4123 can also be a driving gear, a driven gear and a transmission chain, or other transmission structures. The polishing motor 411 is fixed on the shell 412, and the driving end of the polishing motor 411 is drivingly connected with the driving wheel 4121 through the shell 412. The driven wheel 4122 is provided with an outwardly extending driving handle 413, and the driving handle 413 is drivingly connected with the polishing wheel 42 through the shell 412. The polishing motor 411 drives the driving wheel 4121 to rotate, thereby driving the driven wheel 4122 to rotate, and further controlling the polishing wheel 42 to rotate to polish the circular pipe 6. The shell 412 protects the driving wheel 4121, the driven wheel 4122 and the transmission member 4123, so as to avoid the influence of external impurities on the stability of the transmission work.

[0059] Please refer to Figures 1-5 As shown in the figure, the rotating driving mechanism 123 comprises a rotating motor 1231, a rocker arm 1232 and a connecting rod 1233. The rotating motor 1231 is fixed on the main frame 1, and in this embodiment, the rotating motor 1231 is fixed on the mounting frame 12. One end of the rocker arm 1232 is drivingly connected with the driving end of the rotating motor 1231, and the two ends of the connecting rod 1233 are respectively hingedly connected with the other end of the rocker arm 1232 and the mounting plate 2. The rotating motor 1231 drives one end of the rocker arm 1232 to rotate, and the other end of the rocker arm 1232 rotates around the driving end of the rotating motor 1231 as the center, thereby pulling the pull rod to perform an "8" motion, and further controlling the mounting plate 2 to perform reciprocating motion on the annular guide rail 3, and driving the polishing wheel 42 to rotate and polish the side of the circular pipe 6. In this embodiment, the mounting plate 2 is a circular plate, which reduces the corners of the mounting plate 2, avoids interference between the mounting plate 2, the rocker arm 1232 and the connecting rod 1233 during rotation, and affects the driving effect of the rotating motor 1231. In this embodiment, the mounting plate 2 is fixed with a driving plate 25, one end of the driving plate 25 protrudes from the mounting plate 2 towards the driving motor side, and a hinged seat 251 is fixed on one end of the driving plate 25. The end of the connecting rod 1233 is hingedly connected to the hinged seat 251. The distance between the connecting rod 1233, the rocker arm 1232 and the mounting plate 2 is increased, which further avoids interference between the mounting plate 2, the rocker arm 1232 and the connecting rod 1233 during rotation, and affects the driving effect of the rotating motor 1231.

[0060] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A round tube polisher characterized by comprising: The polishing device comprises a main frame, a mounting plate and at least one polishing mechanism. The main frame is fixed with a ring-shaped guide rail, the mounting plate is rotationally connected to the ring-shaped guide rail, the main frame is fixed with a rotation driving mechanism, the driving end of the rotation driving mechanism is drivingly connected to the mounting plate, and the rotation driving mechanism drives the mounting plate to move on the ring-shaped guide rail. A polishing passage is formed in the middle of the mounting plate, the polishing passage is concentric with the ring-shaped guide rail, the polishing mechanism comprises a polishing driving assembly and a polishing wheel drivingly connected to the polishing driving assembly, the polishing wheel is located in the polishing passage, and the polishing driving assembly drives the polishing wheel to rotate. A waxing mechanism is fixed to the polishing driving assembly, the waxing mechanism is provided with a spray head, and the opening of the spray head faces the upper end of the polishing wheel.

2. The pipe polisher of claim 1, wherein: A first gap is formed in the mounting plate, the first gap is communicated with the polishing passage, a second gap is formed in the ring-shaped guide rail, and a third gap is formed in the main frame.

3. The pipe polisher of claim 1, wherein: The mounting plate is fixed with a sliding driving assembly, the sliding driving assembly is in one-to-one correspondence with the polishing mechanism, and the polishing driving assembly is fixed to the sliding driving assembly.

4. The pipe polisher of claim 3, wherein: The sliding driving assembly comprises a sliding motor, two oppositely arranged fixed vertical plates and two oppositely arranged driving vertical plates. The fixed vertical plates are connected with a guide column, the sliding motor is fixed to the outer side of one of the fixed vertical plates, the driving end of the sliding motor penetrates through the fixed vertical plate and is drivingly connected with a driving lead screw, the driving lead screw penetrates through the two driving vertical plates, and the driving lead screw is movably connected with the driving vertical plates through bearings. A driving block is sleeved on the driving lead screw, the driving block is located between the two driving vertical plates, a guide sliding block is sleeved on the guide column, and a sliding plate is fixed to the top surface of the guide sliding block and the driving block.

5. The pipe polisher of claim 3, wherein: The polishing driving assembly comprises a housing and a polishing motor, and the housing is fixed to the sliding driving assembly. The housing is provided with a driving wheel and a driven wheel through bearings, the driving wheel and the driven wheel are wound with transmission members, the polishing motor is fixed to the housing, and the driving end of the polishing motor is drivingly connected with the driving wheel through the housing. The driven wheel is provided with an outwardly extending driving handle, and the driving handle is drivingly connected with the polishing wheel through the housing.

6. The pipe polisher of claim 1, wherein: The number of the polishing mechanisms is three, and the three polishing mechanisms are arranged at intervals on the periphery of the polishing passage.

7. The pipe polisher of claim 1, wherein: The rotation driving mechanism comprises a rotation motor, a rocker arm and a connecting rod, the rotation motor is fixed to the main frame, one end of the rocker arm is drivingly connected with the driving end of the rotation motor, and the two ends of the connecting rod are hingedly connected with the other end of the rocker arm and the mounting plate.

8. The pipe polisher of claim 1, wherein: The main frame is fixed with a circular arc slide rail seat, the size of the circular arc slide rail seat is the same as that of the ring-shaped guide rail, the ring-shaped guide rail is fixed to the circular arc slide rail seat, the inner side of the circular arc slide rail seat is fixed with an outwardly protruding eave, and the inner side of the ring-shaped guide rail abuts against the eave.

9. The pipe polisher of claim 8, wherein: The outer side of the annular guide rail is provided with a V-shaped protrusion which protrudes from the circular arc slide rail seat; The mounting plate is rotatably provided with a V-shaped pulley and a track wheel through bearings, the V-shaped pulley is slidingly arranged on the V-shaped protrusion; The track wheel is arranged on the inner side of the circular arc slide rail seat.

10. The pipe polisher of claim 9, wherein: The height of the protruding eaves is less than the thickness of the annular guide rail; the track wheel is provided with a stepped portion, the inner step surface of the stepped portion abuts against the inner side of the circular arc slide rail seat, and the outer step surface of the stepped portion is located on the outer side of the protruding eaves and abuts against the inner side of the annular guide rail.

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