A mobile phone cover plate glass crater boss polishing jig

Abstract

The application discloses a mobile phone cover plate glass crater boss polishing jig, which is characterized by the following: the accommodating groove of the bearing base is used to accurately limit the mobile phone cover plate glass, the flat plate part of the avoidance upper cover is tightly pressed on the surface of the product large face, the non-processing area is effectively protected, and the polishing effect is avoided; meanwhile, the crater boss to be processed is completely exposed through the avoidance window of the avoidance upper cover, so that local fixed-point polishing is realized, the original sand effect and thickness of the product large face are completely reserved, the uniformity and controllability of the boss repair are remarkably improved, the stability of the polishing process and the product yield are greatly improved, in addition, the polishing jig is simple in structure, convenient to assemble and disassemble, high in adaptability, and can be directly applied to the existing polishing equipment without additional modification, so that the production threshold and process complexity are remarkably reduced, and the polishing jig has good industrialization popularization value.

Description

Technical Field

[0001] This invention belongs to the field of glass polishing technology, and relates to an auxiliary fixture for processing mobile phone cover glass, specifically a polishing fixture for the crater protrusion of mobile phone cover glass. Background Technology

[0002] With the development of consumer electronics, glass covers with complex three-dimensional shapes are increasingly widely used. For example, mobile phone cover glass is often designed with a raised structure to accommodate the camera, commonly known in the industry as a volcano. After the volcano protrusion is formed, its surface (especially the top surface) may have minor imperfections, unevenness, or substandard roughness, requiring local polishing repair.

[0003] There are two main types of existing polishing methods: One method is to use a polishing machine to locally repair the crater-like protrusions on the phone's cover glass. While this method can target the crater-like protrusions, the polishing process is flexible and can easily affect the larger surface area around the protrusion, damaging the surface texture and making it difficult to precisely control the overall thickness of the phone's cover glass.

[0004] Another method is to use a flat grinder for overall surface grinding. This method is extremely inefficient, and because the crater area of ​​the phone's cover glass is not on the same plane as the main surface of the product, the process stability is poor, making mass production difficult. Summary of the Invention

[0005] To address the technical problems existing in the background art, this invention proposes a polishing fixture for the volcano-shaped protrusions of mobile phone cover glass. Through the coordinated cooperation of the support base and the open top cover, precise and selective polishing of the volcano-shaped protrusions of mobile phone cover glass is achieved.

[0006] The objective of this invention can be achieved through the following technical solutions: On one hand, the present invention provides a polishing fixture for the volcano-shaped protrusion of a mobile phone cover glass, comprising: a support base and a clearance cover, wherein the clearance cover is detachably fitted onto the support base; The upper surface of the support base is provided with a receiving groove that matches the outline of the mobile phone cover glass to be processed, so as to load and fix the mobile phone cover glass. The phone's cover glass has at least one crater-shaped protrusion; The air-proof top cover has a flat plate part, and at least one air-proof window is provided on the flat plate part. The position of the air-proof window corresponds one-to-one with the position of the volcano-shaped protrusion on the mobile phone cover glass. When the vent cover is placed on the support base containing the mobile phone glass cover, the lower surface of its flat part presses against the non-crater area surface of the mobile phone glass cover, leaving only the crater protrusion exposed from the vent window.

[0007] Furthermore, the depth of the receiving groove is equal to or slightly less than the thickness of the non-crater area of ​​the mobile phone glass cover, wherein the value of slightly less ranges from 0 mm to 0.1 mm.

[0008] Furthermore, the outline dimension of the vent window is larger than the bottom outline dimension of the corresponding crater protrusion, wherein the single-sided gap between the outline edge of the vent window and the bottom outline of the corresponding crater protrusion is 0.5mm to 1.0mm.

[0009] Furthermore, the thickness of the shelter cover is greater than the height of the crater protrusion, so that the top surface of the crater protrusion forms a depression relative to the upper surface of the shelter cover, wherein the thickness of the shelter cover is at least 0.3 mm greater than the height of the crater protrusion.

[0010] Furthermore, the support base and the air-proof cover are made of bakelite, stainless steel, or aluminum alloy.

[0011] Furthermore, the bottom of the receiving groove is provided with at least one vacuum adsorption hole to adsorb and fix the mobile phone cover glass loaded in the receiving groove.

[0012] Furthermore, the edges of the support base and the clearance cover are provided with mutually cooperating positioning and installation structures.

[0013] On the other hand, the present invention also provides a method for polishing the crater protrusions of a mobile phone glass cover using the above-mentioned polishing fixture, comprising the following steps: Provide a mobile phone glass cover to be polished, the mobile phone glass cover having at least one crater protrusion; The phone's glass cover is installed in the receiving slot of the support base; Place the vent cover onto the support base, so that the volcano-shaped protrusion of the phone's glass cover protrudes through the vent window of the vent cover. Install the polishing fixture with the mobile phone glass cover on the worktable of the polishing equipment; Start the polishing equipment and bring the polishing tools into contact with the surface of the crater protrusion exposed from the shelter window to polish it; After polishing is complete, remove the polishing fixture, open the top cover, and take out the polished phone glass cover.

[0014] Furthermore, the polishing equipment used is a Siker machine, the polishing tools are red abrasive leather with a hardness between 70 and 78, and the concentration of abrasive powder used during polishing is controlled by a hydrometer.

[0015] The beneficial effects of this invention are as follows: The mobile phone cover glass crater protrusion polishing fixture provided by this invention precisely limits the mobile phone cover glass through the receiving groove of the supporting base, so that the flat part of the vented cover tightly presses against the large surface of the product, effectively protecting the non-processed area and preventing it from being affected by the polishing action. At the same time, the crater protrusion to be processed is completely exposed by the vented window opened in the vented cover, thereby realizing localized spot polishing. This not only ensures that the original sand effect and thickness of the large surface of the product are completely preserved, but also significantly improves the uniformity and controllability of protrusion repair, greatly improving the stability of the polishing process and the product yield. It shows outstanding advantages in improving processing accuracy, protecting product integrity, simplifying the process flow and reducing production costs, and has good industrial promotion value. In addition, the polishing fixture has a simple structure, is easy to assemble and disassemble, and has strong adaptability. It can be directly applied to existing polishing equipment without additional modification, which significantly reduces the production threshold and process complexity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the cover glass of a mobile phone.

[0018] Figure 3 This is a schematic diagram of the structure of the support base of the present invention.

[0019] Figure 4 This is a schematic diagram of the structure of the air-proof cover of the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figures 1-4 As shown, the present invention provides a polishing fixture for the volcano-shaped protrusion of a mobile phone cover glass, comprising: a support base 1 and a clearance cover 2. The clearance cover 2 is detachably fitted onto the support base 1 so that the mobile phone cover glass 3 to be processed is loaded between the support base 1 and the clearance cover 2 for polishing. The support base 1 positions and fixes the mobile phone cover glass 3, and the clearance cover 2 protects the large surface sanding effect of the mobile phone cover glass 3 during the polishing process, thereby achieving non-destructive polishing of the mobile phone cover glass.

[0022] The support base 1 is flat and made of bakelite. A recessed receiving groove 11 is provided in the central area of ​​the upper surface of the support base 1, and the shape of the receiving groove 11 perfectly matches the outline of the phone cover glass 3 to accurately load and fix the phone cover glass 3. The phone cover glass 3 has a crater-shaped protrusion 31. The depth of the receiving groove 11 is designed to be equal to the thickness of the non-crater area of ​​the phone cover glass 3, or 0.05mm lower than the thickness of the non-crater area of ​​the phone cover glass 3, to ensure that when the vent cover 2 is closed, the lower surface of the vent cover 2 can fit tightly against the large surface of the phone cover glass 3.

[0023] To more stably fix the phone cover glass 3, several tiny vacuum adsorption holes 12 can be provided at the bottom of the receiving groove 11, so that the phone cover glass 3 can be adsorbed and fixed in the receiving groove 11 by an external air source.

[0024] The top cover 2 is also made of bakelite material, and its shape matches the support base 1, allowing it to fit snugly onto the support base 1. The main body of the top cover 2 is a flat plate 21. On the flat plate 21, at a position corresponding to the crater protrusion 31 on the phone cover glass 3, a hole 22 is provided that penetrates the flat plate 21. The shape of the hole 22 can be circular, square, or other shapes that conform to the outline of the crater protrusion 31. When the top cover 2 is placed on the support base 1 on which the phone cover glass 3 is mounted, the lower surface of its flat plate 21 presses against the non-crater area surface of the phone cover glass 3, so that the large surface frosting effect of the phone cover glass 3 is tightly covered and protected by the top cover 2, with only the crater protrusion 31 exposed through the hole 22. This achieves polishing and repair only on the crater protrusion 31, without damaging the large surface frosting effect and thickness of the phone cover glass 3.

[0025] The outline size of the clearance window 22 is larger than the bottom outline size of the corresponding crater protrusion 21. The single-sided gap between the outline edge of the clearance window 22 and the bottom outline of the corresponding crater protrusion 21 is 0.8mm, which ensures that the crater protrusion 21 can pass through smoothly and also provides sufficient operating space.

[0026] The thickness of the top cover 2 is designed to be greater than the height of the crater protrusion 21. Specifically, the thickness of the top cover 2 is at least 0.5 mm greater than the height of the crater protrusion, so that the top surface of the crater protrusion 21 is recessed relative to the upper surface of the top cover 2, forming a protective cavity to prevent the polishing tool from accidentally wearing down the top cover 2 during the polishing process.

[0027] The edges of the support base 1 and the vent cover 2 are provided with mutually cooperating positioning and mounting structures. Specifically, the edges of the support base 1 and the vent cover 2 are provided with mutually cooperating positioning pins 13 and positioning holes 23 to ensure that the vent window 22 is accurately aligned with the crater protrusion 31 every time the vent cover 2 is closed on the support base 1.

[0028] During the polishing process: First, a piece of mobile phone cover glass 3 to be processed is placed in the receiving groove 11 of the support base 1, with the large side of the product facing upwards, so that the crater protrusion 31 protrudes upwards. Next, the air-proof cover 2 is accurately fitted onto the support base 1 by means of the positioning pin 13 and the positioning hole 23. At this time, the lower surface of the flat part 21 of the air-proof cover 2 is tightly pressed against the non-crater area surface of the mobile phone cover glass 3, firmly protecting the large side of the product, while the crater protrusion 31 just protrudes from the air-proof window 22 of the air-proof cover 2 and is completely exposed to the outside.

[0029] The present invention also provides a method for polishing the crater protrusions of a mobile phone glass cover using the above-mentioned polishing fixture, comprising the following steps: Step S1: Provide the mobile phone cover glass 3 to be polished.

[0030] Step S2: The mobile phone cover glass 3 is loaded into the receiving groove 110 of the support base 1.

[0031] Step S3: Close the top cover 2 to expose the crater protrusion 31 of the mobile phone cover glass 3 through the top cover 2's ventilation window 22.

[0032] Step S4: Install the assembled polishing fixture onto the polishing worktable of the SICO machine and lock it in place.

[0033] Step S5: Start the SICO machine. The polishing spindle of the SICO machine drives the red abrasive with a hardness of 75 to rotate and descend, so that it contacts the top surface of the crater protrusion 31 exposed from the clearance window 22. Under the preset pressure, speed and polishing time, and with the polishing powder liquid with the concentration controlled by the hydrometer, the top surface of the crater protrusion 31 is precisely polished.

[0034] S6. After polishing is completed, the spindle is reset, the fixture is removed, the top cover 2 is opened, and the polished mobile phone cover glass 3 is taken out. At this time, the defects on the top surface of the volcano protrusion 31 of the mobile phone cover glass 3 are perfectly repaired, while the main surface of the product and the side of the protrusion maintain the original sanding effect and thickness.

[0035] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A polishing fixture for crater-shaped bosses on mobile phone cover glass, characterized in that, include: The supporting base (1) and the clearance cover (2) are detachably fitted onto the supporting base (1); The upper surface of the support base (1) is provided with a receiving groove (11) that matches the outline of the mobile phone cover glass (3) to be processed, so as to load and fix the mobile phone cover glass (3). The mobile phone cover glass (3) has at least one crater protrusion (31). The air-proof cover (2) has a flat plate (21), and at least one air-proof window (22) is provided on the flat plate (21). The position of the air-proof window (22) corresponds one-to-one with the position of the volcano protrusion (31) on the mobile phone cover glass (3). When the vent cover (2) is placed on the support base (1) on which the mobile phone glass cover (3) is mounted, the lower surface of its flat part (21) presses against the non-crater area surface of the mobile phone glass cover (3), and only the crater protrusion (31) is exposed from the vent window (22).

2. The polishing fixture according to claim 1, characterized in that, The depth of the receiving groove (11) is equal to or slightly less than the thickness of the non-crater area of ​​the mobile phone glass cover (3), wherein the value of slightly less is in the range of 0 mm to 0.1 mm.

3. The polishing fixture according to claim 1, characterized in that, The outline dimension of the vent window (22) is larger than the bottom outline dimension of the corresponding crater protrusion (21), wherein the single-sided gap between the outline edge of the vent window (22) and the bottom outline of the corresponding crater protrusion (21) is 0.5mm to 1.0mm.

4. The polishing fixture according to claim 1, characterized in that, The thickness of the vent cover (2) is greater than the height of the crater protrusion (21) so that the top surface of the crater protrusion (21) forms a depression relative to the upper surface of the vent cover (2), wherein the thickness of the vent cover (2) is at least 0.3 mm greater than the height of the crater protrusion.

5. The polishing fixture according to claim 1, characterized in that, The support base (1) and the air-proof cover (2) are both made of bakelite, stainless steel or aluminum alloy.

6. The polishing fixture according to claim 1, characterized in that, The bottom of the receiving groove (11) is provided with at least one vacuum adsorption hole (12) to adsorb and fix the mobile phone cover glass (3) loaded in the receiving groove (11).

7. The polishing fixture according to claim 1, characterized in that, The edges of the support base (1) and the clearance cover (2) are provided with mutually cooperating positioning and installation structures.

8. A method for polishing the crater-shaped protrusions of a mobile phone glass cover using a polishing fixture as described in any one of claims 1-7, characterized in that, Includes the following steps: Provide a mobile phone glass cover to be polished, the mobile phone glass cover having at least one crater protrusion; The phone's glass cover is installed in the receiving slot of the support base; Place the vent cover onto the support base, so that the volcano-shaped protrusion of the phone's glass cover protrudes through the vent window of the vent cover. Install the polishing fixture with the mobile phone glass cover on the worktable of the polishing equipment; Start the polishing equipment and bring the polishing tools into contact with the surface of the crater protrusion exposed from the shelter window to polish it; After polishing is complete, remove the polishing fixture, open the top cover, and take out the polished phone glass cover.

9. The polishing method according to claim 8, characterized in that, The polishing equipment used is a Siker machine, and the polishing tools are red abrasive leather with a hardness between 70 and 78. The concentration of abrasive powder used during polishing is controlled by a hydrometer.

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