Polishing device

Abstract

The invention discloses a grinding device, and relates to the technical field of grinding. Comprising a driving mechanism, the driving mechanism comprises a driving body and a driving shaft, and the driving body is connected with the driving shaft; the grinding disc assembly comprises a grinding cover and a plurality of grinding discs, the grinding cover defines a containing space, the end, away from the driving body, of the containing space is open in the axial direction of the driving shaft, the multiple grinding discs are contained in the containing space and stacked in the axial direction of the driving shaft, and the grinding disc with the largest spacing distance from the driving body is located at the open end of the containing space; the driving shaft penetrates through the grinding cover and the grinding disc. The driving body is configured to drive the driving shaft to rotate so as to drive the grinding disc assembly to rotate. Therefore, by arranging the multiple grinding discs stacked in the axial direction of the driving shaft, the overall thickness of the grinding disc assembly can be increased, so that the overall strength of the grinding disc assembly can be improved, the risk that the grinding discs are broken in the grinding process can be effectively reduced, and the use reliability of the grinding device is improved.

Description

Technical Field

[0001] This invention relates to the field of polishing technology, and in particular to a polishing apparatus. Background Technology

[0002] In related technologies, polishing devices can take many forms and designs. Polishing devices can help improve the smoothness and appearance of car surfaces. However, current polishing devices are often poorly designed and prone to breakage of the polishing plate during use, which seriously affects the reliability of the polishing device. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a grinding device whose grinding disc is not easily broken and has high reliability in use.

[0004] The polishing apparatus according to the present invention includes: a driving mechanism, the driving mechanism including: a driving body and a driving shaft, the driving body being connected to the driving shaft; A grinding wheel assembly includes: a grinding cover and a plurality of grinding wheels. The grinding cover defines a receiving space. Along the axial direction of the drive shaft, the receiving space is open at one end opposite to the drive body. The plurality of grinding wheels are all received in the receiving space and stacked along the axial direction of the drive shaft. The grinding wheel with the largest distance from the drive body is located at the open end of the receiving space. The drive shaft passes through the grinding cover and the grinding wheels. The drive body is configured to drive the drive shaft to rotate, thereby driving the grinding wheel assembly to rotate.

[0005] According to the grinding apparatus of the present invention, by arranging multiple grinding discs stacked axially along the drive shaft, the overall thickness of the grinding disc assembly can be increased, thereby increasing the overall strength of the grinding disc assembly, effectively reducing the risk of grinding disc breakage during grinding, and improving the reliability of the grinding apparatus.

[0006] In some examples of the present invention, each of the grinding discs is provided with a plurality of grinding blades at one end away from the drive body, and the plurality of grinding blades are arranged circumferentially along the grinding disc.

[0007] In some examples of the present invention, the polishing cover includes a bottom wall and a peripheral wall, the peripheral wall being connected to the bottom wall and jointly defining the receiving space, the inner surface of the peripheral wall having a plurality of first mating portions, and the circumferential edge of the polishing disc having a plurality of second mating portions, the plurality of first mating portions and the plurality of second mating portions corresponding one-to-one and engaging in a limiting fit.

[0008] In some examples of the present invention, the first mating part is constructed as one of a limiting protrusion or a limiting groove, and the second mating part is constructed as the other of the limiting protrusion or the limiting groove, wherein the limiting protrusion and the corresponding limiting groove are mutually limitingly engaged.

[0009] In some examples of the present invention, the outer surface of the peripheral wall is formed with a plurality of grinding teeth, which are arranged circumferentially along the grinding cover.

[0010] In some examples of the present invention, the grinding device further includes a limiting member disposed on the drive shaft and located between the drive body and the grinding disc assembly.

[0011] In some examples of the present invention, the grinding device further includes a limiting nut, which is detachably engaged with the drive shaft and located at one end of the grinding disc assembly away from the drive body.

[0012] In some examples of the present invention, the grinding cover and the grinding disc are both splinedly fitted with the drive shaft.

[0013] In some examples of the present invention, the grinding device further includes a flexible damping sleeve, which is sleeved on the drive body.

[0014] In some examples of the present invention, the flexible damping sleeve is formed with a plurality of damping holes extending axially along the drive shaft, and the plurality of damping holes are arranged circumferentially. And / or, further comprising: a limiting plate disposed on the drive body and located at one end of the drive body away from the grinding disc assembly.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the polishing apparatus according to an embodiment of the present invention; Figure 2 This is an exploded schematic diagram of the grinding apparatus according to an embodiment of the present invention; Figure 3 This is an exploded view of the grinding disc assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the grinding cover and grinding disc according to an embodiment of the present invention.

[0017] Figure label: Grinding device 100; Drive mechanism 10; drive body 11; drive shaft 12; limiting component 13; Grinding disc assembly 20; grinding cover 21; receiving space 211; bottom wall 212; peripheral wall 213; first mating part 2131; limiting protrusion 2132; grinding teeth 2133; first mating hole 214; Grinding disc 22; Grinding pad 221; Second mating part 222; Limiting groove 223; Second mating hole 224; Limit nut 30; Flexible vibration damping sleeve 40; vibration damping hole 401; limiting plate 41. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The following is for reference. Figures 1-4 A grinding apparatus 100 for a vehicle according to an embodiment of the present invention is described.

[0020] like Figures 1-4 As shown, the grinding device 100 according to an embodiment of the present invention includes: a drive mechanism 10 and a grinding disc assembly 20.

[0021] The drive mechanism 10 includes a drive body 11 and a drive shaft 12. The drive body 11 is connected to the drive shaft 12, and the drive body 11 can drive the drive shaft 12 to rotate.

[0022] The grinding disc assembly 20 includes a grinding cover 21 and a plurality of grinding discs 22. The grinding cover 21 defines a receiving space 211. Along the axial direction of the drive shaft 12, the receiving space 211 is open at one end away from the drive body 11. The plurality of grinding discs 22 are all received in the receiving space 211 and are stacked along the axial direction of the drive shaft 12. Among the plurality of grinding discs 22, the grinding disc 22 with the largest distance from the drive body 11 is located at the open end of the receiving space 211, that is, the one furthest from the drive body. The grinding disc 22 of 11 is located at the open end of the receiving space 211. The drive shaft 12 passes through the grinding cover 21 and the grinding disc 22 and cooperates with the grinding cover 21 and the grinding disc 22. As some embodiments of this application, the drive shaft 12 is splined with the grinding cover 21 and the grinding disc 22. The drive body 11 is configured to drive the drive shaft 12 to rotate in order to drive the grinding disc assembly 20 to rotate. That is, the drive body 11 can drive the drive shaft 12 to rotate in order to drive the grinding disc assembly 20 to rotate in order to perform grinding operations.

[0023] It should be noted that by setting multiple grinding discs 22 and stacking them along the axial direction of the drive shaft 12, the overall thickness of the grinding disc assembly 20 can be increased, thereby increasing the overall strength of the grinding disc assembly 20 and reducing the risk of breakage of the grinding discs 22 during rotational grinding. Moreover, when the grinding disc 22 located at the open end of the receiving space 211 (i.e., the grinding disc 22 with the largest distance from the drive body 11) is heavily worn, the arrangement order of the multiple grinding discs 22 can be changed to place the less worn grinding disc 22 at the open end of the receiving space 211, thereby extending the service life of the grinding device 100.

[0024] Therefore, by setting multiple grinding discs 22 stacked along the axial direction of the drive shaft 12, this application can increase the overall thickness of the grinding disc assembly 20, thereby increasing the overall strength of the grinding disc assembly 20, effectively reducing the risk of the grinding discs 22 breaking during the grinding process, and improving the reliability of the grinding device 100.

[0025] In some embodiments of the present invention, such as Figures 1-4 As shown, each grinding disc 22 has multiple grinding blades 221 at the end opposite to the drive body 11, and the multiple grinding blades 221 are arranged circumferentially along the grinding disc 22. As some embodiments of this application, the multiple grinding blades 221 on the same grinding disc 22 are evenly spaced along the circumferential direction of the grinding disc 22. By having multiple grinding blades 221 at the end of each grinding disc 22 opposite to the drive body 11, the grinding effect can be improved, thereby improving the reliability of the grinding device 100.

[0026] In some embodiments of the present invention, such as Figures 3-4 As shown, the polishing cover 21 includes a bottom wall 212 and a peripheral wall 213. The peripheral wall 213 is connected to the bottom wall 212 and together defines a receiving space 211. The peripheral wall 213 may be located at the circumferential edge of the bottom wall 212 and surround the bottom wall 212. As some embodiments of this application, the peripheral wall 213 and the bottom wall 212 are integrally formed.

[0027] The inner surface of the peripheral wall 213 has a plurality of first mating parts 2131, which can be arranged at intervals along the circumference of the peripheral wall 213. The circumferential edge of the grinding disc 22 has a plurality of second mating parts 222, which can be arranged at intervals along the circumferential edge of the peripheral wall 213. The plurality of first mating parts 2131 and the plurality of second mating parts 222 correspond one-to-one, and the first mating parts 2131 and the corresponding second mating parts 222 are in a limiting fit. This arrangement can reduce the risk of relative rotation between the grinding disc 22 and the grinding cover 21, thereby improving the reliability of the grinding device 100.

[0028] In some embodiments of the present invention, such as Figures 1-4As shown, the first mating part 2131 is constructed as one of the limiting protrusion 2132 or the limiting groove 223, and the second mating part 222 is constructed as the other of the limiting protrusion 2132 or the limiting groove 223. The limiting protrusion 2132 is matched with the corresponding limiting groove 223 for limiting engagement.

[0029] In some embodiments of this application, the first mating part 2131 is constructed as a limiting protrusion 2132, and the second mating part 222 is constructed as a limiting groove 223, with the limiting protrusion 2132 engaging with the corresponding limiting groove 223. This configuration not only effectively reduces the risk of relative rotation between the grinding disc 22 and the grinding cover 21, but also facilitates assembly, reducing the assembly difficulty of the grinding disc assembly 20 and improving assembly efficiency.

[0030] In some embodiments of the present invention, such as Figures 1-4 As shown, a plurality of grinding teeth 2133 are formed on the outer surface of the peripheral wall 213, and the plurality of grinding teeth 2133 are arranged circumferentially along the grinding cover 21. As some embodiments of this application, the plurality of grinding teeth 2133 are evenly spaced along the circumferential direction of the grinding cover 21. This arrangement allows the grinding device 100 to perform grinding not only by the grinding disc 22, but also by the grinding teeth 2133 on the grinding cover 21 during use, thereby enabling grinding of narrow spaces, which helps to broaden the applicability of the grinding device 100 and facilitates its use.

[0031] In some embodiments of the present invention, such as Figure 2 As shown, the grinding device 100 also includes a limiting member 13, which is disposed on the drive shaft 12 and located between the drive body 11 and the grinding disc assembly 20.

[0032] As some embodiments of this application, the limiting member 13 can be constructed as a disc-shaped limiting member 13. The limiting member 13 can be sleeved on and fixedly connected to the drive shaft 12. Along the axial direction of the drive shaft 12, the limiting member 13 is located between the drive body 11 and the grinding disc assembly 20. Specifically, along the axial direction of the drive shaft 12, the limiting member 13 is located between the drive body 11 and the bottom wall 212 of the grinding cover 21. This arrangement can limit the grinding disc assembly 20 through the limiting member 13, reducing the risk of wear of the grinding disc assembly 20 and / or the drive body 11 due to contact between the grinding disc assembly 20 and the drive body 11, which is beneficial to extending the service life of the grinding disc assembly 20 and the drive body 11.

[0033] As some embodiments of this application, the drive body 11 and the drive shaft 12 are detachably connected (e.g., but not limited to snap-fit ​​connection). This arrangement allows the drive shaft 12 and the grinding disc assembly 20 to be removed from the drive body 11 to replace the grinding disc 22 or adjust the arrangement of the grinding discs 22. This makes disassembly and assembly simple and helps to improve disassembly and assembly efficiency.

[0034] In some embodiments of the present invention, such as Figure 2 As shown, the grinding device 100 also includes a limiting nut 30, which is detachably engaged with the drive shaft 12 and located at the end of the grinding disc assembly 20 away from the drive body 11.

[0035] As some embodiments of this application, the limiting nut 30 is threadedly engaged with the drive shaft 12 to facilitate the installation and removal of the limiting nut 30. Along the axial direction of the drive shaft 12, the limiting nut 30 is located at the end of the grinding disc assembly 20 opposite to the drive body 11, and the diameter of the limiting nut 30 is larger than the diameter of the drive shaft 12. By setting the limiting nut 30, the risk of the grinding disc 22 disengaging from the drive shaft 12 can be reduced, improving the reliability of the grinding device 100. Moreover, multiple grinding discs 22 can be disassembled by removing the limiting nut 30, thereby facilitating the adjustment of the arrangement order of the multiple grinding discs 22 and making it convenient to use.

[0036] In some embodiments of the present invention, such as Figures 2-4 As shown, both the grinding cover 21 and the grinding disc 22 are splinedly fitted to the drive shaft 12. In some embodiments of this application, the grinding cover 21 has a first mating hole 214, and the grinding disc 22 has a second mating hole 224. Along the axial direction of the drive shaft 12, the first mating hole 214 corresponds to the second mating hole 224. The drive shaft 12 passes through the first mating hole 214 and the second mating hole 224, and is splinedly fitted to both. This arrangement ensures reliable mating between the drive shaft 12 and the grinding cover 21 and the grinding disc 22. The drive shaft 12 reliably drives the grinding cover 21 and the grinding disc 22 to rotate for grinding operations, reducing the risk of relative rotation between the grinding cover 21, the grinding disc 22, and the drive shaft 12, thus improving the reliability of the grinding device 100.

[0037] In some embodiments of the present invention, such as Figures 1-2As shown, the polishing device 100 also includes a flexible vibration damping sleeve 40, which is sleeved on the drive body 11. As some embodiments of this application, the flexible vibration damping sleeve 40 can be made of, but is not limited to, rubber, resin, etc. It should be noted that the polishing device 100 proposed in this application can be a handheld polishing device 100. When the polishing device 100 is in operation, it will generate vibration, increasing the operator's hand burden and causing hand tremors. This forces the operator to use a strong grip to hold the polishing device 100, greatly increasing the operator's labor intensity. By setting the flexible vibration damping sleeve 40 and sleeved on the drive body 11, the vibration transmitted from the polishing device 100 to the operator's hand can be reduced, thereby reducing the operator's hand burden and the grip force required, which helps to reduce the operator's labor intensity.

[0038] In some embodiments of the present invention, such as Figure 2 As shown, the flexible damping sleeve 40 has a plurality of damping holes 401 extending axially along the drive shaft 12, and the plurality of damping holes 401 are arranged circumferentially. As some embodiments of this application, the plurality of damping holes 401 are arranged circumferentially along the grinding cover 21. As some embodiments of this application, the plurality of damping holes 401 are evenly spaced circumferentially along the grinding cover 21. By forming a plurality of damping holes 401 extending axially along the drive shaft 12 in the flexible damping sleeve 40, and arranging the plurality of damping holes 401 circumferentially, the damping holes 401 can contract and deform, which can more effectively reduce the vibration transmitted from the grinding device 100 to the operator's hand, thereby more effectively reducing the operator's hand burden and further reducing the grip force required by the operator, which is conducive to further reducing the operator's labor intensity.

[0039] In some embodiments of the present invention, such as Figures 1-2 As shown, the grinding device 100 also includes a limiting plate 41, which is disposed on the drive body 11. As some embodiments of this application, the limiting plate 41 can be disposed on the drive body 11 by means of, but not limited to, snap-fit ​​connection, screw connection, etc. The limiting plate 41 is located at the end of the drive body 11 away from the grinding disc assembly 20. Specifically, along the axial direction of the drive shaft 12, the limiting plate 41 is located at the end of the drive body 11 away from the grinding disc assembly 20. By setting the limiting plate 41, the risk of the grinding device 100 slipping off when the operator holds the grinding device 100 can be reduced, thereby reducing the risk of dangerous accidents caused by the slipping of the grinding device 100 and improving the safety of the grinding device 100.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0042] In the description of this invention, "a plurality of" means two or more.

[0043] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0044] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sharpening device characterized by, The utility model relates to a grinding mechanism, including: Driving mechanism, the driving mechanism includes: driving body, driving shaft, the driving body is connected with the driving shaft; Grinding disc assembly, the grinding disc assembly includes: polishing cover, a plurality of polishing disc, the polishing cover defines the accommodation space, and the accommodation space opens away from the one end of driving body along the axial direction of driving shaft, a plurality of polishing disc are all accommodated in the accommodation space and are stacked along the axial direction of driving shaft, the polishing disc with the biggest distance apart from the driving body is located in the open end of the accommodation space, the driving shaft is arranged in the polishing cover, the polishing disc, the driving body is configured to drive the driving shaft rotation to drive the grinding disc assembly rotation.

2. The sharpening device of claim 1, wherein, Each polishing disc away from the one end of driving body is equipped with a plurality of polishing pieces, and a plurality of polishing pieces are arranged along the circumferential direction of the polishing disc.

3. The sharpening device of claim 1, wherein, The polishing cover includes a bottom wall and a peripheral wall, the peripheral wall is connected with the bottom wall and jointly defines the accommodation space, the inner surface of the peripheral wall is formed with a plurality of first matching parts, the circumferential edge of the polishing disc is formed with a plurality of second matching parts, a plurality of first matching parts and a plurality of second matching parts one-to-one correspond and limit fit.

4. The sharpening device of claim 3, wherein, The first matching part is configured as one of limiting protrusion or limiting recess, the second matching part is configured as the other one of the limiting protrusion or the limiting recess, and the limiting protrusion and the corresponding limiting recess limit fit.

5. The sharpening device of claim 3, wherein, The outer surface of the peripheral wall is formed with a plurality of polishing teeth, and a plurality of polishing teeth are arranged along the circumferential direction of the polishing cover.

6. The sharpening device of claim 1, wherein Further comprising: Limiting piece, the limiting piece is arranged on the driving shaft and located between the driving body and the grinding disc assembly.

7. The sharpening device of claim 1, wherein Further comprising: Limiting nut, the limiting nut is detachably matched with the driving shaft and located at the one end of the grinding disc assembly away from the driving body.

8. The sharpening device of claim 1, wherein, The polishing cover and the polishing disc are spline matched with the driving shaft.

9. The sharpening device of claim 1, wherein, Further comprising: Flexible damping sleeve, the flexible damping sleeve is sleeved on the driving body.

10. The sharpening device of claim 9, wherein, The flexible damping sleeve is formed with a plurality of damping holes extending along the axial direction of the driving shaft, and a plurality of damping holes are arranged along the circumferential direction; And / or, further comprising: limiting plate, the limiting plate is arranged on the driving body and located at the one end of the driving body away from the grinding disc assembly.

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