CN216422231U

CN216422231U - Grinding head

Info

Publication number: CN216422231U
Application number: CN202120286092.XU
Authority: CN
Inventors: 彭富国
Original assignee: Hunan Anguan Intelligent Technology Co ltd
Current assignee: Hunan Anguan Intelligent Technology Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2022-05-03
Anticipated expiration: 2031-02-01

Abstract

The utility model discloses a grinding head which comprises a grinding part, wherein the grinding part comprises an elastic part and a first polishing part, the elastic part is cylindrical, and the first polishing part is arranged on the peripheral surface of the elastic part or integrally formed with the elastic part.

Description

Grinding head

Technical Field

The utility model relates to the technical field of polishing, in particular to a grinding head.

Background

Polishing of various electronic equipment glass can be divided into two parts of plane polishing and edge polishing, wherein a brush disc is adopted for polishing the edge part at present, the brush disc covers a glass plate to rotate relatively, and polishing of the edge part of the glass is realized. The polishing of the side edge of the glass is to stack and align the pretreated glass and then grind and polish the glass, so the process is complicated and the comprehensive efficiency is low, therefore, the prior art needs to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a grinding head, and aims to solve the problem that the polishing efficiency of the side edge position of glass is low in the prior art.

In order to achieve the above purpose, the grinding head provided by the utility model is used for polishing the side edge of a workpiece, and comprises a grinding part, wherein the grinding part comprises an elastic part and a first polishing part, the elastic part is cylindrical, and the first polishing part is arranged on the outer peripheral surface of the elastic part or is integrally formed with the elastic part.

Preferably, the grinding head further comprises a connecting portion to connect the grinding head to a drive mechanism.

Preferably, the connecting portion is connected with the elastic portion, and the connecting portion adopts a double-sided adhesive tape to bond the grinding head to the driving mechanism.

Preferably, the connecting portion is connected with the elastic portion, and the connecting portion adopts a magic tape to bond the grinding head to the driving mechanism.

Preferably, the thickness of the connecting part is between 0.8mm and 2.5 mm.

Preferably, the magic tape is provided with a hook face part and a hair face part, and the hair face part is made of cloth cover-based electrostatic flocking.

Preferably, the rough surface part is adhered to the grinding part through a hot melt adhesive film.

Preferably, the hot melt adhesive film is a copolyamide adhesive film or a copolyester adhesive film.

Preferably, the area density of the hot melt adhesive film is between 30 grams per square meter and 70 grams per square meter, and the hot melt adhesive film is in a net shape.

Preferably, the grinding head has a central bore.

Preferably, the diameter of the central hole is between 5mm and 40mm, and the outer diameter of the elastic part is between 45mm and 160 mm.

Preferably, the elastic part is a sponge layer, and the density of the sponge layer is 45-95kg/m³And the hardness of the elastic part is between Shore F and 70-95 degrees.

Preferably, the elastic part is an EVA (ethylene vinyl acetate) layer, and the hardness of the elastic part is between Shore C and 18-40 degrees.

Preferably, the elastic part is a composite layer of EVA and PU.

Preferably, the hardness of the first polished section is within the range of Shore C, 40-90 DEG, and the thickness of the first polished section is within the range of 0.5mm-4 mm.

Preferably, a gap or a shallow groove is formed in the outer surface of the first polishing portion, and an included angle between the gap or the shallow groove and the height direction of the first polishing portion is not more than 80 °.

Preferably, the polishing device further comprises a second polishing part, wherein the second polishing part is made of a polyurethane foam material, and the porosity of the polyurethane foam material is 15% -25%. .

The novel grinding head provided by the utility model solves the problem of low side polishing efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIGS. 1 and 2 are schematic views of an embodiment of the present invention from different angles;

FIG. 3 is a schematic structural diagram of another embodiment of the present invention;

FIG. 4 is a corresponding cross-sectional view of FIG. 3;

FIG. 5 is a schematic structural diagram of another embodiment of the present invention;

FIG. 6 is a corresponding cross-sectional view of FIG. 5;

FIG. 7 is a schematic structural diagram according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Elastic part	310	Magic tape
200	A first polishing part	400	Center hole
				210	Second polishing part	500	Gap
300	Connecting part

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The integral molding in the utility model includes the case of making one piece from the same material, and also includes the case of integrally processing two different materials.

Referring to fig. 1 to 8, the present invention provides a grinding head for polishing a side edge of a workpiece, including a grinding portion, the grinding portion including an elastic portion 100 and a first polishing portion 200, the elastic portion 100 being cylindrical, the first polishing portion 200 being disposed on an outer circumferential surface of the elastic portion 100 or integrally formed with the elastic portion 100; the grinding head further includes a connecting portion 300 to connect the grinding portion to a driving mechanism; the connecting portion 300 is connected to the elastic portion 100, and the connecting portion 300 is bonded to the driving mechanism by using a hook and loop fastener 310.

The magic tape 310 is provided with a hook face part and a hair face part, wherein the hook face part is fixed on the driving mechanism, the hair face part is fixed on the elastic part 100, and when the magic tape is used, the hair face of the hair face part is only needed to be pasted on the hook face of the hook face part, so that the grinding head can be fixed on the driving mechanism. When in replacement, only the grinding head needing to be replaced needs to be directly torn down. When the magic tape 310 is adopted to realize connection, in order to avoid the influence of the magic tape 310 on the overall elasticity and height of the grinding head, the thickness of the hook face part and the rough face part after being bonded is controlled to be between 0.8mm and 2.5mm, and preferably between 1mm and 1.5 mm. Wherein, the wool surface part is made by cloth surface-based electrostatic flocking.

The rough face part is used for bonding with the grinding part, in a specific embodiment, copolyamide or copolyester hot melt adhesive films are used for bonding, the hot melt adhesive films are arranged into a net shape, and the area density of the hot melt adhesive films is between 30 grams per square meter and 70 grams per square meter.

In other embodiments, the magic tape can be adhered to the grinding part by glue.

The connection part 300 may adopt a high-viscosity double-sided tape to bond the grinding head to the driving mechanism, in addition to the magic tape 310.

The grinding head is provided with a central hole 400, and the central hole 400 can be used for positioning the grinding head to ensure the accuracy of the position of the grinding head. The diameter of the central hole 400 is between 5mm and 40mm, and the outer diameter of the elastic part 100 is between 45mm and 160 mm.

The elastic part 100 can be made of one or two or more of sponge, EVA, polyurethane foam material, EVA composite PU material and the like, and when the elastic part 100 adopts a sponge layer, the density of the sponge layer is between 45 and 95kg/m³And the hardness of the elastic part 100 is between Shore F and 70-95 degrees. Among them, a shore F durometer is generally used to measure the hardness of a flexible material such as sponge. When the elastic part 100 is an EVA layer, the hardness of the elastic part 100 is shore C, 18 ° -40 °. Among them, a shore C durometer is generally used for measuring the hardness of rubber and the like.

The hardness of the first polishing section 200 is shore C, 40 ° -90 °, and the thickness of the first polishing section 200 is 0.5mm-4 mm.

In order to ensure the wetting of the polishing solution, the outer surface of the first polishing part 200 is provided with a gap 500 or a shallow groove, and the included angle between the gap 500 or the shallow groove and the height direction of the first polishing part 200 is not more than 80 °.

Grooves are further formed in the side edges of some workpieces, for example, groove-shaped sound outlet holes are reserved in the top end of the front glass of the mobile phone of the full-face screen. The groove is a shallow groove, the boundary of the edge of the single groove and the glass plate has an obvious turning angle, in order to polish the groove, the utility model also provides an embodiment, a second polishing part 210 made of polyurethane foam material is added above the first polishing part 200, and the porosity of the polyurethane foam material is 15-25%. The second polishing section 210 has an outer diameter not smaller than that of the first polishing section 200.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A grinding head for polishing a side edge of a workpiece, comprising a grinding portion, characterized in that the grinding portion comprises:

an elastic part having a cylindrical shape;

and the first polishing part is arranged on the peripheral surface of the elastic part or integrally formed with the elastic part.

2. The abrasive tip of claim 1, wherein said abrasive tip further comprises a coupling portion to couple said abrasive tip to a drive mechanism.

3. The abrasive tip of claim 2, wherein said connecting portion connects said resilient portion and said connecting portion uses double-sided tape to bond said abrasive tip to said drive mechanism.

4. The grinding head of claim 2, wherein the connecting portion is connected to the elastic portion, and the connecting portion bonds the grinding head to the driving mechanism using a hook and loop fastener.

5. The grinding head of claim 3 or 4, wherein the thickness of the connecting portion is between 0.8mm and 2.5 mm.

6. The grinding head of claim 4, wherein the magic tape has a hook surface portion and a burr surface portion, and the burr surface portion is made of cloth-based electrostatic flocking.

7. The grinding head according to claim 6, wherein the roughened surface portion is bonded to the grinding portion by a hot melt adhesive film.

8. The grinding head of claim 7, wherein the hot melt adhesive film is a copolyamide adhesive film or a copolyester adhesive film.

9. The grinding head according to claim 7, wherein the hot melt adhesive film has a surface density of from 30 grams per square meter to 70 grams per square meter and is in the form of a web.

10. The abrasive tip of claim 1, wherein said abrasive tip has a central bore.

11. The grinding head of claim 10, wherein the aperture of the central hole is between 5mm and 40mm, and the outer diameter of the elastic part is between 45mm and 160 mm.

12. The grinding head of claim 1, wherein the resilient portion is a sponge layer having a density of 45-95kg/m³And the hardness of the elastic part is between Shore F and 70-95 degrees.

13. The grinding head of claim 1, wherein the elastic part is an EVA layer, and the hardness of the elastic part is Shore C, 18 degrees to 40 degrees.

14. A grinding head according to claim 1, wherein the hardness of said first polishing portion is within the range of shore C, 40 ° -90 °, and the thickness of said first polishing portion is within the range of 0.5mm-4 mm.

15. The grinding head according to claim 1, wherein the outer surface of the first polishing portion is provided with slits or shallow grooves, and an angle between the slits or the shallow grooves and a height direction of the first polishing portion is not more than 80 °.

16. The grinding head according to claim 1, further comprising a second polishing portion, wherein the second polishing portion is made of a polyurethane foam material, and the porosity of the polyurethane foam material is 15% to 25%.