Polishing structure and automobile part polishing structure

Abstract

The utility model provides a polishing structure which comprises a holding handle, a polishing motor is arranged at the top of the holding handle and comprises a cylindrical outer shell, a polishing disc is arranged on an output shaft of the polishing motor, and a polishing layer is arranged on the side, away from the polishing motor, of the polishing disc. The driving sleeve is movably connected to the outer wall of the outer shell in a sleeving mode, and a swing rack is arranged on the driving sleeve; the container is connected to the outer shell, an eduction tube is arranged in the container, and a pressing pump is arranged at the end, close to the polishing disc, of the container; a swing gear is arranged at one end of the rotary column, a J-shaped outflow pipe is arranged at the other end of the rotary column, the swing gear is meshed with the swing rack, a hard pipe is arranged at the end, away from the polishing disc, of the movable piece, and a soft pipe is arranged at the end, close to the polishing disc, of the movable piece. And the outflow pipe, the soft pipe, the hard pipe, the pressing pump and the eduction pipe are communicated in sequence. According to the polishing structure, the operation effect is better.

Description

Technical Field

[0001] This utility model belongs to the field of polishing technology, and relates to a polishing structure and a polishing structure for automotive parts. Background Technology

[0002] Polishing is a processing method that uses mechanical, chemical, or electrochemical processes to reduce the surface roughness of a workpiece, thereby obtaining a bright and smooth surface. It involves using polishing tools and abrasive particles or other polishing media to refine the surface of a workpiece. Polishing does not improve the dimensional or geometric accuracy of a workpiece; rather, it aims to achieve a smooth surface or a mirror-like finish, and is sometimes used to eliminate shine (matte finish). Polishing wheels are typically used as the polishing tool. Polishing wheels are generally made of multiple layers of canvas, felt, or leather, clamped on both sides by metal discs, and their rims are coated with a polishing compound consisting of a uniform mixture of micro-powdered abrasive particles and grease.

[0003] Currently, polishing is also performed on automotive parts during the manufacturing process. Specifically, during the production of the four corner windows, if workers visually inspect the windows for particles (usually formed during the painting process), they first need to apply polishing compound to the affected areas, and then use a handheld polishing machine to grind and polish them. Because workers have to go through the process of putting down the polishing machine, applying polishing compound, and then picking up the machine to polish each time, the operational results are poor. Utility Model Content

[0004] The purpose of this invention is to provide a polishing structure and an automotive parts polishing structure, aiming to solve the problem of poor operation results.

[0005] To solve the above-mentioned technical problems, this utility model provides a polishing structure, comprising:

[0006] A grip handle is provided, and a polishing motor is provided on the top of the grip handle. The polishing motor includes a cylindrical outer shell, and a polishing disc is provided on the output shaft of the polishing motor. A polishing layer is provided on the side of the polishing disc opposite to the polishing motor.

[0007] A drive sleeve is movably fitted onto the outer wall of the outer shell, and a swing rack is provided on the drive sleeve;

[0008] A container dish, which is connected to the outer shell, has an outlet tube inside the container dish, and a press pump is provided at one end of the container dish near the polishing disc;

[0009] The movable part is provided with a rotating column, one end of the rotating column is provided with a swing gear, and the other end is provided with a J-shaped outflow pipe; the swing gear is engaged with the swing gear rack; one end of the movable part away from the polishing disc is provided with a hard pipe, and the other end close to the polishing disc is provided with a soft pipe; the outflow pipe, the soft pipe, the hard pipe, the pressing pump and the outlet pipe are communicated in sequence.

[0010] The outflow pipe comprises a first state, a second state and a third state.

[0011] When the outflow pipe is in the first state, the outflow end of the outflow pipe is located between the polishing disc and the container vessel, and the minimum distance between the swing gear rack and the container vessel is S1.

[0012] When the outflow pipe is in the second state, the polishing disc is located between the outflow end of the outflow pipe and the container vessel, and the outflow end of the outflow pipe is just opposite to the polishing layer, and the minimum distance between the swing gear rack and the container vessel is S2.

[0013] When the outflow pipe is in the third state, the polishing disc is located between the outflow end of the outflow pipe and the container vessel, the outflow end of the outflow pipe is just opposite to the polishing layer, and the polishing medium is flowed out to the polishing layer, and the minimum distance between the swing gear rack and the container vessel is S3, and S1>S2>S3.

[0014] The utility model further sets up, the container vessel includes the transmission shell fixedly connected in the shell body and the containing shell connected with transmission shell, the outlet pipe is L shape and is communicated with the containing shell, the pressing pump is located in the transmission shell.

[0015] The utility model further sets up, the transmission shell is close to the one side of the polishing disc and is provided with two guide rods, two the guide rod passes through the drive sleeve and is active, the first elastic piece is actively sleeved and has on the guide rod, two ends of the first elastic piece are connected with drive sleeve and transmission shell respectively.

[0016] The utility model further sets up, the shell body is provided with the termination seat, the drive sleeve is provided with the termination block, the free end of two the guide rod is connected with the termination seat fixedly, the first elastic piece is in the compression state all the time, and when the outflow pipe is in second state or third state, the outflow pipe all touches the termination block.

[0017] The utility model further sets up, the movable part is towards the U shape of the polishing disc, and both ends of the movable part have the rotating column, and the inner end of two the rotating column is connected with the outflow pipe.

[0018] The utility model further sets up, activity piece with second elastic member that is in compression state continuously is arranged between the transmission shell.

[0019] The utility model further sets up, the press pump includes the pump shell body that is cylindrical, the one end of pump shell body is far away from the polishing disc is provided with the first one way part of horn shape, the one end with first one way part smallest diameter is connected with the lead-out pipe, the one end with first one way part biggest diameter is provided with the first limit part of porous, first one way ball is movably arranged in first one way part, the diameter of first one way ball is greater than the inside diameter of lead-out pipe, and it is smaller than the inside diameter of pump shell body;

[0020] The inner end of hard pipe is movably attached to the inner wall of pump shell body, and the outer wall of hard pipe is sealingly movably passed through the one end of pump shell body and transmission shell close to polishing disc, the inner end of hard pipe is provided with the second one way part of horn shape, the one end with second one way part smallest diameter is communicated with pump shell body, the inner wall of hard pipe is provided with the second limit part of porous, second one way ball is movably arranged between second limit part and second one way part, the diameter of second one way ball is greater than the minimum inside diameter of second one way part, and it is smaller than the inside diameter of hard pipe.

[0021] The utility model further sets up, the outside of the opening end of containing shell is provided with connecting barrel, the inner wall of one end of transmission shell is opened and is provided with the connecting groove for connecting barrel insertion, connecting barrel and transmission shell are for interference fit between.

[0022] The utility model further sets up, the bottom of drive sleeve is provided with drive handle.

[0023] The utility model discloses still announces a kind of automobile parts polishing structure, including any one of the above-mentioned polishing structure.

[0024] Compared with the prior art, the polishing structure provided by the utility model provides a polishing structure, before polishing and during polishing, the outflow pipe is in the first state, that is, the free end of the outflow pipe does not affect the polishing disc and the polishing layer (flexible material, such as canvas, felt or leather); then before polishing, the worker holds the holding handle and drives the driving sleeve to move towards the holding handle; the driving sleeve drives the swing rack to move while moving, which drives the swing gear to rotate and drives the outflow pipe to swing, and when the outflow end of the outflow pipe is opposite to the polishing layer, the outflow pipe reaches the second state; in this state, the worker does not stop but continues to drive the driving sleeve to the holding handle, in this process, the outflow pipe does not swing (at this time, it is resisted by the top of the terminal block or the outside of the polishing disc) but drives the hard pipe towards the container direction, at this time, the pressing pump (similar to the pressing head of household detergent) extrudes the polishing agent in the container and acts on the polishing layer. The polishing agent in the application is preferably a certain flowability, such as polishing oil, polishing liquid and the like, so that it can flow better and be better absorbed on the polishing layer.

[0025] After the driving sleeve is moved to the limit position, the driving sleeve is reset, and in the resetting process, the pressing pump automatically sucks the polishing agent in the container into the pressing pump, waiting for next use; at the same time, with the movement of the driving sleeve, the outflow end of the outflow pipe also swings to a position not affecting the polishing layer, so that the worker only needs to manually start the switch of the polishing motor on the holding handle, at this time, the polishing disc and the polishing layer can be driven to rotate; and in actual operation process, in order to prevent the polishing agent from being thrown out, the polishing agent is usually applied to the polished part before starting the polishing motor.

[0026] Therefore, the holding handle can be held during the whole operation process, without frequent putting down and taking the polishing machine and the container of the polishing agent, so that the operation effect is better and the operation convenience is higher. Meanwhile, an auxiliary frame in inverted U shape can be arranged at the work station, the auxiliary spring is suspended in the middle part of the auxiliary frame, the auxiliary spring is connected to the middle part of the shell body or the container, so that the mass of the polishing structure can be shared to a certain extent, and the labor intensity is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structure diagram of the utility model Figure 1 ;

[0028] Figure 2 is Figure 1 an enlarged view of part A in the figure

[0029] Figure 3 is a structure diagram of the utility model Figure 2 ;

[0030] Figure 4 is a sectional view of the utility model

[0031] Figure 5 is Figure 4 is an enlarged view of part B in figure 1;

[0032] Figure 6 is Figure 4 is an enlarged view of part C in figure 1;

[0033] Figure 7 is Figure 4 is an enlarged view of part D in figure 1.

[0034] Wherein, 1, holding handle; 2, polishing motor; 3, outer shell; 4, polishing disc; 5, polishing layer; 6, drive sleeve; 7, swing rack; 8, container vessel; 8a, transmission shell; 8b, containing shell; 9, discharge pipe; 10, movable piece; 11, swing gear; 12, outflow pipe; 13, hard pipe; 14, soft pipe; 15, guide rod; 16, first elastic piece; 17, termination seat; 18, termination block; 19, second elastic piece; 20, pump shell; 21, first one-way part; 22, first limiting part; 23, first one-way ball; 24, second one-way part; 25, second limiting part; 26, second one-way ball; 27, connecting cylinder; 28, drive handle. DETAILED DESCRIPTION

[0035] The polishing structure and the automobile part polishing structure according to the present application will be further described below in conjunction with the drawings and specific embodiments. The advantages and features of the present application will be more apparent from the following description. It should be noted that the drawings are all in a very simplified form and all use non-precise proportions, only for the purpose of conveniently and clearly assisting the description of the embodiments of the present application. The same or similar reference numerals in the drawings represent the same or similar parts.

[0036] A polishing structure, as Figures 1 to 7 shown, comprising:

[0037] A holding handle 1, the top of the holding handle 1 is provided with a polishing motor 2, the polishing motor 2 comprises a cylindrical outer shell 3, the output shaft of the polishing motor 2 is provided with a polishing disc 4, the side of the polishing disc 4 away from the polishing motor 2 is provided with a polishing layer 5;

[0038] A drive sleeve 6, the drive sleeve 6 is movably sleeved on the outer wall of the outer shell 3, the drive sleeve 6 is provided with a swing rack 7;

[0039] A container vessel 8, the container vessel 8 is connected to the outer shell 3, the container vessel is provided with a discharge pipe 9 in the container body, the end of the container vessel 8 close to the polishing disc 4 is provided with a pressing pump;

[0040] The movable part 10 is provided with a rotating column, one end of which is provided with a swing gear 11, and the other end is provided with a J-shaped outflow pipe 12, the swing gear 11 is engaged with the swing gear rack 7, one end of the movable part 10 away from the polishing disc 4 is provided with a hard pipe 13, and the other end close to the polishing disc 4 is provided with a soft pipe 14 (which is made of flexible material and has certain strength, so that the soft pipe 14 can input polishing agent into the outflow pipe 12 no matter what angle the outflow pipe 12 is at; at the same time, it can also ensure smoothness and not adhere to the inner wall), the outflow pipe 12, the soft pipe 14, the hard pipe 13, the pressing pump and the outlet pipe 9 are communicated in sequence.

[0041] The outflow pipe 12 includes a first state, a second state and a third state.

[0042] When the outflow pipe 12 is in the first state, the outflow end of the outflow pipe 12 is located between the polishing disc 4 and the container 8, and the minimum distance between the swing gear rack 7 and the container 8 is S1.

[0043] When the outflow pipe 12 is in the second state, the polishing disc 4 is located between the outflow end of the outflow pipe 12 and the container 8, and the outflow end of the outflow pipe 12 is just opposite to the polishing layer 5, and the minimum distance between the swing gear rack 7 and the container 8 is S2.

[0044] When the outflow pipe 12 is in the third state, the polishing disc 4 is located between the outflow end of the outflow pipe 12 and the container 8, the outflow end of the outflow pipe 12 is just opposite to the polishing layer 5, and the polishing medium is flowed out to the polishing layer 5, and the minimum distance between the swing gear rack 7 and the container 8 is S3, and S1>S2>S3.

[0045] The container 8 includes a transmission shell 8a fixedly connected to the outer shell 3 and a containing shell 8b connected to the transmission shell 8a, the outlet pipe 9 is L-shaped and communicated with the containing shell 8b, and the pressing pump is located in the transmission shell 8a.

[0046] Two guide rods 15 are arranged on the side of the transmission shell 8a close to the polishing disc 4, the two guide rods 15 are movably penetrated through the driving sleeve 6, a first elastic member 16 is movably sleeved on the guide rod 15, and two ends of the first elastic member 16 are connected with the driving sleeve 6 and the transmission shell 8a respectively.

[0047] The outer shell 3 is provided with a termination seat 17, the drive sleeve 6 is provided with a termination block 18, the free ends of the two guide rods 15 are fixedly connected with the termination seat 17, the first elastic member 16 is continuously in a compressed state, and the outflow pipe 12 abuts against the termination block 18 when the outflow pipe 12 is in the second state or the third state.

[0048] The movable member 10 is in a U shape towards the polishing disc 4, and the two ends of the movable member 10 are provided with the rotating columns, and the inner ends of the two rotating columns are connected with the outflow pipe 12.

[0049] The movable member 10 and the transmission shell 8a are provided with a second elastic member 19 which is continuously in a compressed state.

[0050] The pressing pump comprises a pump shell 20 in a cylindrical shape, the pump shell 20 is provided with a first one-way part 21 in a trumpet shape at an end away from the polishing disc 4, the smallest-diameter end of the first one-way part 21 is connected with the outflow pipe 9, the largest-diameter end of the first one-way part 21 is provided with a first limiting part 22 in a porous shape, the first one-way part 21 is movably provided with a first one-way ball 23, the diameter of the first one-way ball 23 is greater than the inner diameter of the outflow pipe 9 and smaller than the inner diameter of the pump shell 20.

[0051] The inner end of the hard pipe 13 movably abuts against the inner wall of the pump shell 20, and the outer wall of the hard pipe 13 movably and sealingly penetrates the pump shell 20 and the transmission shell 8a close to the polishing disc 4, the inner end of the hard pipe 13 is provided with a second one-way part 24 in a trumpet shape, the smallest-diameter end of the second one-way part 24 is communicated with the pump shell 20, the inner wall of the hard pipe 13 is provided with a second limiting part 25 in a porous shape, the second one-way part 24 and the second limiting part 25 are movably provided with a second one-way ball 26, the diameter of the second one-way ball 26 is greater than the smallest inner diameter of the second one-way part 24 and smaller than the inner diameter of the hard pipe 13.

[0052] The outer side of the open end of the containing shell 8b is provided with a connecting cylinder 27, the inner wall of one end of the transmission shell 8a is provided with a connecting groove for inserting the connecting cylinder 27, and the connecting cylinder 27 and the transmission shell 8a are in interference fit.

[0053] The bottom of the drive sleeve 6 is provided with a drive handle 28.

[0054] The utility model also discloses a kind of automobile parts polishing structure, including any one of the above-mentioned polishing structure, wherein it should be understood that the polishing structure of the application can be applied to the polishing process of automobile parts, and can be applied to any other occasion needing polishing.

[0055] The utility model provides a kind of polishing structure, before polishing and when polishing, the outflow pipe 12 is in the first state at this time, i.e.

[0056] After driving sleeve 6 is moved to limit position, driving sleeve 6 is reset, and in the resetting process, press pump automatically sucks the polishing agent in container 8 into press pump, waits for next use;With the activity of driving sleeve 6, the outflow end of outflow pipe 12 also swings to the position that does not affect polishing layer 5, so that worker only needs to manually start the switch of polishing motor 2 on holding handle 1, at this time, polishing disc 4 and polishing layer 5 can be driven to rotate;And in actual operation process, to prevent polishing agent from being thrown out, polishing agent is usually applied to the place to be polished before starting polishing motor 2.

[0057] Therefore, holding handle 1 can be held during the whole operation process, without frequently putting down and taking polishing machine and polishing agent container, so that the operation effect is better, and the operation convenience is higher. Meanwhile, in actual use, inverted U-shaped auxiliary frame can be arranged on work station, auxiliary spring is hung in the middle of auxiliary frame, auxiliary spring is connected to the middle of shell body 3 or container 8, so that the mass of polishing structure can be shared to a certain extent, and labor intensity is reduced.

[0058] In actual use, when polishing agent needs to be extruded on polishing layer 5, first, finger is used to pinch driving handle 28, and driving handle 28 drives driving sleeve 6 to move, in the early stage of movement, the elastic force of second elastic member 19 is larger, so that the position of movable part 10 almost keeps position unchanged, and after swing rack 7 acts on swing gear 11, driving sleeve 6 drives outflow pipe 12 to swing, until outflow pipe 12 abuts against termination block 18.

[0059] After continue to pinch drive handle 28 (in fact for the same process, the operation process does not stop, and in the process of the outflow pipe 12 continues to resist the end block 18), this time the movable part 10 towards the pump housing 20 direction activity, and drive hard tube 13 activity, under the pressure of the polish inside the pump housing 20, so that the first one-way ball 23 adhere to the first one-way 21 inner diameter minimum one end, thereby preventing the polish in the pump housing 20 back to the containment shell 8b, but only to verify the outflow pipe 12 outflow, and eventually extruded or sprayed on the polishing layer 5.

[0060] When the drive sleeve 6 activity to the extreme position, the worker only needs to release the drive handle 28, this time in the first elastic member 16 and the second elastic member 19 (continuously in the compression state) under the action of the outflow pipe 12 swing up, while the hard tube 13 outward activity; outflow pipe 12 swing can not affect the polishing layer 5 activity, while the hard tube 13 in the outward activity process, the second one-way ball 26 adhere to the second one-way 24 inner diameter minimum one end, prevent external air into the pump housing 20, while the polish in the containment shell 8b under the action of atmospheric pressure (containment shell 8b on the air inlet hole, can let the external air flow into, but also can prevent the polish flow out, such as air inlet hole located in the top of the containment shell 8b, and usually in the process of use air inlet hole is located in the top of the containment shell 8b), into the pump housing 20, waiting for the next time to be used.

[0061] Wherein the drive sleeve 6 has a certain width, and the drive sleeve 6 and the outer shell 3 can also be coated with lubricating oil, so that the two better relative activity, and at the same time can guarantee the angle stability of the drive sleeve 6. Drive sleeve 6 in the process of activity by the guide rod 15 guide and limit by the end seat 17, so that it can only reciprocating activity in a small range. At the same time two swing rack 7 action to two swing gear 11, thus guarantee the angle stability of the movable part 10, also guarantee the use stability of the outflow pipe 12. Wherein the hard tube 13 although through the transmission shell 8a and the pump housing 20, but the hard tube 13 and the transmission shell 8a and the pump housing 20 is relatively sealed, can prevent the polish flow out well.

[0062] When the polish in the containment shell 8b is used up, you can separate the containment shell 8b and the transmission shell 8a by force outward or using tools outward, and then replace the new containment shell 8b (containing polish), and the connecting cylinder 27 and the connecting groove are interference fit, which guarantees the connection stability of the containment shell 8b and the transmission shell 8a; the connecting cylinder 27 can also be oval or rectangular in shape according to actual conditions, which guarantees the angle of the containment shell 8b. Or in actual use, you can also inject new polish into the air inlet hole of the containment shell 8b through a syringe.

[0063] It should be further explained that all the "arranged" and similar descriptions in the present application (especially the specification) express that there is a connection between two structures, but the specific connection means is not limited too much, and is usually a conventional connection means, that is, it should be understood that the means is the prior art, and does not need to be described too much. For example, "m is arranged with n", only expresses that there is n structure on m structure, and the specific connection between the two is through welding, riveting, adhesive connection or one-piece forming, which is within the protection scope of the present application. For example, "x is arranged with y", only expresses that y and x can rotate relative to each other, and whether the two are connected through a bearing or y directly penetrates x to be connected with x in rotation, or other realizable modes, are within the protection scope of the present application.

[0064] The above description is only a description of the preferred embodiments of the present application, and is not any limitation on the scope of the present application. Any modification and modification of the above disclosure by a person skilled in the art is within the protection scope of the claims.

Claims

1. A polishing structure, characterized by, The utility model provides a kind of polishing machine, comprising: A holding handle (1) is provided with a polishing motor (2) at the top of the holding handle (1), the polishing motor (2) includes a cylindrical outer shell (3), a polishing disc (4) is provided on the output shaft of the polishing motor (2), and a polishing layer (5) is provided on the side of the polishing disc (4) away from the polishing motor (2); A drive sleeve (6) is movably sleeved on the outer wall of the outer shell (3), and a swing rack (7) is provided on the drive sleeve (6); A container vessel (8) is connected to the outer shell (3), a discharge pipe (9) is provided in the container vessel (8), and a pressing pump is provided at one end of the container vessel (8) close to the polishing disc (4); A movable element (10) is rotatably provided with a rotating column, a swing gear (11) is provided at one end of the rotating column, and a J-shaped outflow pipe (12) is provided at the other end of the rotating column, the swing gear (11) is engaged with the swing rack (7), a hard pipe (13) is provided at one end of the movable element (10) away from the polishing disc (4), a soft pipe (14) is provided at one end of the movable element (10) close to the polishing disc (4), and the outflow pipe (12), the soft pipe (14), the hard pipe (13), the pressing pump and the discharge pipe (9) are sequentially communicated; The outflow pipe (12) includes a first state, a second state and a third state; When the outflow pipe (12) is in the first state, the outflow end of the outflow pipe (12) is located between the polishing disc (4) and the container vessel (8), and the minimum distance between the swing rack (7) and the container vessel (8) is S1; When the outflow pipe (12) is in the second state, the polishing disc (4) is located between the outflow end of the outflow pipe (12) and the container vessel (8), and the outflow end of the outflow pipe (12) is directly opposite the polishing layer (5), and the minimum distance between the swing rack (7) and the container vessel (8) is S2; When the outflow pipe (12) is in the third state, the polishing disc (4) is located between the outflow end of the outflow pipe (12) and the container vessel (8), the outflow end of the outflow pipe (12) is directly opposite the polishing layer (5), and the polishing medium is flowed out to the polishing layer (5), and the minimum distance between the swing rack (7) and the container vessel (8) is S3, and S1>S2>S3.

2. A polishing structure according to claim 1, wherein The container vessel (8) includes a transmission shell (8a) fixedly connected to the outer shell (3) and a containing shell (8b) connected to the transmission shell (8a), the discharge pipe (9) is L-shaped and communicated with the containing shell (8b), and the pressing pump is located in the transmission shell (8a).

3. A polishing structure according to claim 2, wherein Two guide rods (15) are arranged on the side of the transmission shell (8a) close to the polishing disc (4), and the two guide rods (15) are movably arranged through the driving sleeve (6), a first elastic member (16) is movably sleeved on the guide rod (15), and the two ends of the first elastic member (16) are connected with the driving sleeve (6) and the transmission shell (8a) respectively.

4. A polishing structure according to claim 3, wherein A termination seat (17) is arranged on the outer shell (3), a termination block (18) is arranged on the driving sleeve (6), the free ends of the two guide rods (15) are fixedly connected with the termination seat (17), the first elastic member (16) is continuously in a compressed state, and the outlet pipe (12) abuts against the termination block (18) when the outlet pipe (12) is in the second state or the third state.

5. A polishing structure according to claim 2, wherein The movable member (10) is in a U shape towards the polishing disc (4), and the two ends of the movable member (10) are provided with the rotating columns, and the inner ends of the two rotating columns are connected with the outlet pipe (12).

6. A polishing structure according to claim 5, wherein A second elastic member (19) in a continuously compressed state is arranged between the movable member (10) and the transmission shell (8a).

7. A polishing structure according to claim 2, wherein The pressing pump comprises a pump shell (20) in a cylindrical shape, a first one-way part (21) in a trumpet shape is arranged at the end of the pump shell (20) away from the polishing disc (4), the end of the first one-way part (21) with the smallest diameter is connected with the outlet pipe (9), the end of the first one-way part (21) with the largest diameter is provided with a first limiting part (22) in a porous shape, a first one-way ball (23) is movably arranged in the first one-way part (21), the diameter of the first one-way ball (23) is greater than the inner diameter of the outlet pipe (9) and smaller than the inner diameter of the pump shell (20); The inner end of the hard pipe (13) is movably attached to the inner wall of the pump shell (20), and the outer wall of the hard pipe (13) is movably and sealingly arranged through the pump shell (20) and the end of the transmission shell (8a) close to the polishing disc (4), the inner end of the hard pipe (13) is provided with a second one-way part (24) in a trumpet shape, the end of the second one-way part (24) with the smallest diameter is communicated with the pump shell (20), the inner wall of the hard pipe (13) is provided with a second limiting part (25) in a porous shape, a second one-way ball (26) is movably arranged between the second one-way part (24) and the second limiting part (25), the diameter of the second one-way ball (26) is greater than the minimum inner diameter of the second one-way part (24) and smaller than the inner diameter of the hard pipe (13).

8. A polishing structure according to claim 2, wherein The outer side of the open end of the containing shell (8b) is provided with a connecting barrel (27), and a connecting groove for inserting the connecting barrel (27) is formed in the inner wall of one end of the transmission shell (8a), and the connecting barrel (27) and the transmission shell (8a) are in interference fit.

9. The polishing structure of claim 1 wherein, A driving handle (28) is arranged at the bottom of the driving sleeve (6).

10. An automobile part polishing structure characterized by comprising: The polishing structure comprises the polishing structure according to any one of claims 1-9.

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