Polishing disc

Abstract

The utility model provides a polishing disk. The polishing disc comprises a polishing body and a plurality of polishing strips fixed to the polishing body in the first direction. The polishing body is provided with a plurality of flow guide hole sets, each flow guide hole set comprises a plurality of flow guide holes, and the flow guide holes are formed in the first direction and communicate with one another through flow channels. The multiple polishing strips are arranged on the surface of the polishing body at intervals by avoiding the flow guide holes, each polishing strip comprises a base part and a hardened layer wrapping the base part, and the hardness of the hardened layer is higher than that of the base part. The action routes of the flow guide holes and the polishing strips on the polishing body do not interfere with each other, the polishing agent flows to the to-be-polished surface through the flow guide holes and the flow channels, the polishing strips conduct friction polishing on the to-be-polished surface, and due to the combined action of the polishing strips and the polishing agent, good polishing performance is achieved. The hardened layer is arranged outside the polishing strip, so that the overall hardness of the polishing strip can be improved, namely, a subsurface structure is formed on the outer surface of the polishing strip, the stability of the polishing strip can be improved, and the polishing strip still has longer service life even under strict polishing conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing equipment, in particular to a polishing disc. Background Art

[0002] Polishing refers to a processing method that uses mechanical, chemical or electrochemical effects to reduce the surface roughness of a workpiece to obtain a bright and smooth surface. It is based on the use of polishing tools and abrasive particles or other polishing media to modify the workpiece surface.

[0003] The commonly used polishing tool is a polishing machine. The motor at its power output end drives the polishing disc installed on the polishing machine to rotate at high speed. Polishing agent is added during high-speed rotation. Since the polishing disc and the polishing agent work together and rub against the surface to be polished, the purpose of removing pollution, oxide layer and shallow marks on the surface to be polished can be achieved.

[0004] Traditional polishing discs use polyurethane non-woven fabrics as polishing strips and are fixed on a substrate. The specific production process is as follows: the polyurethane non-woven fabric is pressed into a sheet, and then the roll is cut into strips with a width of 1 to 10 mm and a length of 10 to 50 mm. The strip polishing strips are installed on a substrate with a certain strength according to certain patterns. Common substrate materials include modified plastics such as PVC, PP, and ABS. This type of polishing disc that is fixed and installed after simple cutting has poor stability and is not durable, especially under some strict polishing conditions. The service life is short. For example, in a glass polishing environment (a high-temperature solution environment of cerium oxide or aluminum oxide, 50 to 75°C) and a rotation speed of 2 to 200 rpmd. Existing polishing leathers (polyurethane non-woven fabrics) are difficult to maintain the stability of the polishing effect under such harsh working conditions, and their service life is short. Utility Model Content

[0005] Based on the above problems, the purpose of the utility model is to provide a polishing disc, which has a better polishing effect and a higher surface hardness and can be used stably even under strict polishing conditions.

[0006] To achieve the above-mentioned purpose, the utility model provides a polishing disc on one hand. The polishing disc comprises a polishing body and a plurality of polishing strips fixed to the polishing body in a first direction, the polishing body is provided with a plurality of guide hole groups, each of the guide hole groups comprises a plurality of guide holes, the plurality of guide holes are arranged along the first direction, the plurality of guide holes are connected by a flow channel, the plurality of polishing strips are arranged at intervals on the surface of the polishing body avoiding the guide holes, each of the polishing strips comprises a base and a hardening layer wrapping the base, and the hardness of the hardening layer is higher than that of the base.

[0007] In the technical solution adopted by the utility model, multiple flow guide holes on each flow guide hole group on the polishing body are arranged along the first direction and connected by the flow channel, and multiple polishing strips are arranged at intervals on the surface of the polishing body along the first direction to avoid the multiple flow guide holes, so the action routes of the flow guide holes on the polishing body and the polishing strips do not interfere with each other, the flow guide holes and the flow channel flow the polishing agent to the surface to be polished, and the polishing strips perform friction polishing on the surface to be polished, and the polishing strips and the polishing agent work together to achieve better polishing performance. The polishing strip includes a base and a hardened layer wrapping the base, and the hardness of the hardened layer is higher than that of the base. By arranging the hardened layer on the outside of the polishing strip, the overall hardness of the polishing strip can be improved, that is, a sub-surface structure is formed on the outer surface of the polishing strip, which can improve the stability of the polishing strip, and still have a better service life even under strict polishing conditions.

[0008] As a technical solution of the present invention, the outer contour of the projection shape of the polishing body in the first direction is circular, and the multiple guide holes are evenly distributed in a ring shape along the central axis of the polishing body.

[0009] As a technical solution of the present invention, there are multiple guide hole groups arranged at intervals, and the number of guide holes on each guide hole group gradually increases from the center to the outside of the polishing body.

[0010] As a technical solution of the utility model, the base includes a first portion fixed to the polishing body and a second portion away from the polishing body, and the size of the second portion in the first direction gradually decreases in the direction away from the polishing body.

[0011] As a technical solution of the present invention, the hardened layer at least wraps the second portion.

[0012] As a technical solution of the present invention, in the first direction, the size of the first part is defined as H1, the size of the second part is defined as H2, the minimum spacing between adjacent polishing strips is D1, the minimum size of the first part in the direction perpendicular to the first direction is D2, 0.1≤H1 / (H1+H2)<1, 0.25≤D1 / D2≤1.

[0013] As a technical solution of the present invention, the projection shapes of the plurality of polishing strips in the first direction are combined to form concentric circles, spirals or a matrix arrangement.

[0014] As a technical solution of the present invention, a first adhesive layer is provided between the polishing strip and the polishing body, and the polishing strip is fixed to the polishing body by means of the first adhesive layer.

[0015] As a technical solution of the utility model, the polishing body is provided with a notch recessed inwardly, and the polishing strip is embedded in and fixed in the notch.

[0016] As a technical solution of the utility model, the polishing body is provided with a second adhesive layer on a side away from the polishing strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a bottom view schematically showing an embodiment of a polishing disc of the utility model.

[0018] Figure 2 It is a top view schematic diagram of an embodiment of the polishing disc of the utility model.

[0019] Figure 3 for Figure 1 A change diagram of .

[0020] Figure 4 for Figure 1 Another variation of .

[0021] Figure 5 for Figure 1 A partial cross-sectional view of .

[0022] Figure 6 for Figure 5 A partial cross-sectional view of .

[0023] Figure 7 for Figure 6 Enlarged view of the circled area.

[0024] Components comply with the description

[0025] 100-polishing plate; 10-polishing body; 11-guiding hole group; 11a-guiding hole; 13-flow channel; 15-notch; 30-polishing strip; 31-base; 311-first part; 313-second part; 33-hardening layer; 50-first adhesive layer; 70-second adhesive layer; H1-dimension of the first part in the first direction; H2-dimension of the second part in the first direction; D1-minimum spacing between adjacent polishing strips; D2-minimum dimension of the first part in the direction perpendicular to the first direction; D-first direction DETAILED DESCRIPTION

[0026] In order to better illustrate the purpose, technical solution and beneficial effects of the utility model, the utility model will be further described below in conjunction with specific implementation methods and drawings. It should be noted that the following implementation methods and drawings are further explanations of the utility model and should not be used as limitations on the utility model.

[0027] The utility model provides a polishing disc suitable for a polishing machine, such as Figures 1 to 7As shown, the polishing plate 100 includes a polishing body 10 and a plurality of polishing strips 30 fixed to the polishing body 10 in a first direction D. The first direction D is the extending direction of the polishing strips 30, that is, the direction acting on the surface to be polished.

[0028] Continue as Figure 1 and Figures 3 to 5 As shown, a plurality of guide hole groups 11 are provided on the polishing body 10. Further, as Figure 1 and Figure 3 The number of the guide hole groups 11 is shown as 3. Figure 4 There are two guide hole groups 11 shown, and the multiple guide hole groups 11 are arranged at intervals. The guide hole group 11 includes multiple guide holes 11a, and the number of guide holes 11a on each guide hole group 11 gradually increases from the center to the outside of the polishing body 10. The outer contour of the projection shape of the polishing body 10 in the first direction D is circular, and the multiple guide holes 11a are evenly distributed in a ring shape along the central axis of the polishing body 10. Further, as Figure 1 and Figure 3 As shown, the number of the guide holes 11a on the three guide hole groups 11 is 4, 8, and 8 from the inside to the outside, and the guide holes 11a on each guide hole group 11 are arranged in a circular shape. Figure 4 As shown, the number of the guide holes 11a on the two guide hole groups 11 is 8, and the guide holes 11a on the outer guide hole group 11 are arranged in a circular shape. Of course, the guide holes 11a on the guide hole group 11 can also form other patterns, such as Figure 4 As shown, the guide holes 11a on the internal guide hole group 11 form a "U-shaped". The guide holes 11a are all arranged along the first direction D. The plurality of guide holes 11a are connected by the flow channel 13 (such as Figure 6 The guide holes 11a on each guide hole group 11 can be connected to each other through the flow channel 13, so the polishing liquid can be added through one inlet. The guide holes 11a are used to transport the polishing agent to the surface to be polished. The polishing body 10 is provided with a plurality of guide holes 11a and arranged in a certain manner, which is conducive to the polishing agent flowing to the entire surface to be polished and improving the polishing performance. The polishing agent can be selected from inorganic oxides, organic waxes, etc. according to needs.

[0029] The projection shapes of the plurality of polishing strips 30 in the first direction D are combined to form concentric circles (eg Figure 1 as shown), spiral (as Figure 1 as shown) or in a matrix arrangement (as Figure 4 As shown). Figures 6-7As shown, a plurality of polishing strips 30 are arranged at intervals on the surface of the polishing body 10 avoiding a plurality of guide holes 11a. Each polishing strip 30 includes a base 31 and a hardened layer 33 wrapping the base 31. The hardness of the hardened layer 33 is higher than that of the base 31. By providing the hardened layer 33 on the outside of the polishing strip 30, the overall hardness of the polishing strip 30 can be improved, that is, a sub-surface structure is formed on the outer surface of the polishing strip 30 to improve the stability of the polishing strip 30, and even under strict polishing conditions, the polishing strip 30 still has a better service life. The thickness of the hardened layer 33 can be 0.5 to 5.0 mm. The hardened layer should not be too thick, otherwise it is easy to fall off and also affects the sensitivity of polishing.

[0030] The base 31 includes a first portion 311 fixed to the polishing body 10 and a second portion 313 away from the polishing body 10. The size of the second portion 313 in the first direction D gradually decreases in the direction away from the polishing body 10, and the hardening layer 33 at least wraps the second portion 313. That is, the portion of the polishing bar 30 that contacts the surface to be polished is not only provided with the hardening layer 33 but also has a gradually decreasing size. Therefore, the hardness of the polishing bar 30 is not only improved, but also the flexibility of friction with the surface to be polished is improved, and its polishing effect and polishing life are improved. The hardening layer 33 can be realized by hot pressing, ultrasonic hot melting or gluing on the surface of the polishing bar. After treatment, the hardness of the surface of the polishing bar can be increased from 40 to 70HC to 60 to 95HC.

[0031] Furthermore, in the first direction D, the size of the first part is defined as H1, and the size of the second part is defined as H2, 0.1≤H1 / (H1+H2)<1. Controlling within this range can not only improve the flexibility of the friction between the polishing strip 30 and the surface to be polished, but also make the polishing strip 30 have a certain strength to avoid deformation and affect long-term use. The total size of the polishing strip 30 in the first direction D, that is, H1+H2, can be 5-50mm. The minimum spacing between adjacent polishing strips 30 is D1, and the minimum size of the first part in the direction perpendicular to the first direction D is D2, 0.25≤D1 / D2≤1. Controlling D1 / D2 within a certain range can avoid the spacing between adjacent polishing strips 30 being too large to cause uneven polishing, and too small to affect the flexibility of polishing.

[0032] In addition, continue as Figure 6 and Figure 7 As shown, a first adhesive layer 50 is provided between the polishing strip 30 and the polishing body 10, and the polishing strip 30 is fixed to the polishing body 10 by means of the first adhesive layer 50. In order to facilitate the fixation between the two, a notch 15 recessed inwardly may be provided on the polishing body 10, and the polishing strip 30 may be embedded in and fixed to the notch 15. A second adhesive layer 70 may be provided on the side of the polishing body 10 away from the polishing strip 30 to fix the polishing disc 100 on the polishing machine, or a mounting hole may be provided in the middle of the polishing body 10 to fix the polishing disc 100 on the polishing machine by means of the mounting hole.

[0033] In the polishing disc 100 of the present invention, a plurality of guide holes 11a on each guide hole group 11 on the polishing body 10 are arranged along the first direction D and connected by the flow channel 13, and a plurality of polishing strips 30 are arranged at intervals on the surface of the polishing body 10 along the first direction D, avoiding the plurality of guide holes 11a. Therefore, the action routes of the guide holes 11a on the polishing body 10 and the polishing strips 30 do not interfere with each other. The guide holes 11a and the flow channel 13 flow the polishing agent to the surface to be polished, and the polishing strips 30 perform friction polishing on the surface to be polished. Due to the combined action of the polishing strips and the polishing agent, better polishing performance can be achieved. By providing a hardening layer 33 on the outside of the polishing strip 30, the overall hardness of the polishing strip 30 can be improved, that is, a sub-surface structure is formed on the outer surface of the polishing strip 30, which can improve the stability of the polishing strip 30 and still have a better service life even under strict polishing conditions.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, it is not limited to those listed in the embodiments. Ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A polishing disc, characterized in that: The invention comprises a polishing body and a plurality of polishing strips fixed to the polishing body in a first direction, the polishing body is provided with a plurality of guide hole groups, each of the guide hole groups comprises a plurality of guide holes, the plurality of guide holes are all arranged along the first direction, the plurality of guide holes are connected by flow channels, the plurality of polishing strips are arranged at intervals on the surface of the polishing body avoiding the guide holes, each of the polishing strips comprises a base and a hardening layer wrapping the base, the hardness of the hardening layer is higher than that of the base, the base comprises a first part fixed to the polishing body and a second part away from the polishing body, the size of the second part in the first direction gradually decreases along the direction away from the polishing body, and the hardening layer at least wraps the second part.

2. The polishing disc according to claim 1, characterized in that: The outer contour of the projection shape of the polishing body in the first direction is circular, and the plurality of guide holes are evenly distributed in a ring shape along the central axis of the polishing body.

3. The polishing disc according to claim 1, characterized in that: There are multiple guide hole groups arranged at intervals, and the number of guide holes on each guide hole group gradually increases from the center to the outside of the polishing body.

4. The polishing disc according to claim 1, characterized in that: In the first direction, the size of the first part is defined as H1, the size of the second part is defined as H2, the minimum spacing between adjacent polishing strips is D1, the minimum size of the first part in the direction perpendicular to the first direction is D2, 0.1≤H1 / (H1+H2)<1, 0.25≤D1 / D2≤1.

5. The polishing disc according to claim 1, characterized in that: The projection shapes of the plurality of polishing strips in the first direction are combined to form concentric circles, spirals or a matrix arrangement.

6. The polishing disc according to claim 1, characterized in that: A first adhesive layer is provided between the polishing strip and the polishing body, and the polishing strip is fixed to the polishing body by means of the first adhesive layer.

7. The polishing disc according to claim 1, characterized in that: The polishing body is provided with a notch recessed inwardly, and the polishing strip is embedded in and fixed in the notch.

8. The polishing disc according to claim 1, characterized in that: The polishing body is provided with a second adhesive layer on a side away from the polishing strip.

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