A workpiece, manufacturing process and applications for protecting glass during polishing

Abstract

The application provides a workpiece for protecting glass in a polishing process, comprising a workpiece body, a cavity for placing a glass product is arranged on the workpiece body, a cut and a glue inlet are uniformly arranged along the periphery of the cavity, a special-structure and novel-design protective layer is made along the periphery of the cavity after raw materials are injected through the glue inlet, the protective layer is closely attached to the surface of the cavity, the integrity of the appearance of the periphery of the glass product in the grinding and polishing process is ensured, the controllability and certainty of the grinding and polishing removal amount in the production process are enhanced, and the glass grinding yield and production efficiency can be greatly improved. The protective layer is particularly arranged in a pull-buckle type uniform distribution, so that the stress of each section and each side is more balanced, the quick dismounting and replacement after wear are facilitated, and the time cost is saved.

Description

Technical Field

[0001] This invention relates to the field of glass grinding and polishing, and specifically to a workpiece, manufacturing process, and application for protecting glass during the grinding and polishing process. Background Technology

[0002] Glass grinding and polishing is a crucial step in the processing of glass covers for electronic products. It typically includes rough grinding, fine grinding, and polishing. Rough grinding uses larger abrasive particles to remove surface roughness or excess glass residue from the initial forming process. Fine grinding prepares the glass for polishing, ensuring the glass achieves the required surface accuracy, dimensional precision, and surface roughness based on the rough grinding process. Polishing is the final step in achieving the desired optical surface layer. Throughout the polishing process, efforts are made to remove as much of the damaging layer left by rough and fine grinding as possible, achieving the most ideal optical effect.

[0003] As glass products become increasingly thinner and lighter, damage to these products during processing is often unavoidable due to physical friction, collisions, and centrifugal force from the grinding disc. Current methods involve manually cutting plastic strips and then gluing them to the workpiece surface, resulting in low efficiency, poor precision, and significant labor and material costs. Therefore, it is necessary to invent a workpiece product designed to protect glass during grinding and polishing processes to meet daily production needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a workpiece for protecting glass during the grinding and polishing process, which solves the problem of glass products being easily damaged during grinding and polishing and greatly improves the production yield.

[0005] To solve the above problems, the technical solution of the present invention is:

[0006] A workpiece for protecting glass during the polishing process includes a workpiece body, a cavity for placing glass products is provided on the workpiece body, cuts and glue inlets are uniformly provided along the periphery of the cavity, after raw material is injected through the glue inlets, a protective layer is formed on the upper and lower surfaces of the periphery of the cavity, the protective layer is used to protect the glass products from damage caused by impact and movement during the polishing process.

[0007] Furthermore, the protective layer includes a main body and a snap-on portion; the thickness of the snap-on portion is lower than the thickness of the main body; the shape of the main body of the protective layer is consistent with the shape of the periphery of the cavity; the shape of the snap-on portion of the protective layer is consistent with the shape of the cut; the protective layer adopts a snap-on fixing method, which makes the protective layer fit more firmly with the workpiece; the evenly distributed snap-on arrangement makes the force on each section and each side more balanced, and facilitates disassembly and replacement after subsequent processing wear.

[0008] Furthermore, the thickness of the protective layer is less than the thickness of the glass product.

[0009] Furthermore, the main body of the protective layer has a width of 0.1-5 mm.

[0010] Furthermore, the shape of the pull tab portion of the protective layer includes trapezoidal, cylindrical, dovetail, and square shapes.

[0011] Furthermore, the cavity is at least one, and its shape includes square, circular, and triangular.

[0012] Furthermore, the material of the workpiece body includes wood fiberboard and ceramic fiberboard; the shape of the workpiece body includes circle, square and triangle; and the thickness is 0.2mm-5mm.

[0013] Furthermore, the protective layer is made of materials including polyurethane resin or polypropylene.

[0014] Another technical problem to be solved by the present invention is to provide a manufacturing process for the workpiece described above for protecting glass during the polishing process.

[0015] To solve the above technical problems, the technical solution is as follows:

[0016] A manufacturing process for protecting glass during the polishing process includes the following steps:

[0017] The shape processing steps are used to process the workpiece shape required by the grinding and polishing equipment.

[0018] The grinding and finishing step processes the workpiece obtained from the external machining step by machining various positioning holes, cavities or cuts on the surface of the workpiece.

[0019] In the forming process, a protective layer is formed around the periphery of the cavity of the workpiece obtained in the grinding and finishing process;

[0020] Following the above shape processing steps to the forming processing steps, the final workpiece required to protect the glass during the polishing process is formed.

[0021] Furthermore, the shape processing technology in the shape processing step includes stamping or CNC machining.

[0022] Furthermore, the machining process in the grinding finishing step includes rough grinding and fine grinding.

[0023] Furthermore, the molding process in the molding process step is injection molding, and the protective layer is made of polyurethane resin or polypropylene.

[0024] Furthermore, the molding process includes the following steps:

[0025] Step 1) Place the workpiece obtained from the grinding and finishing step into a 100T-200T injection molding machine and fix it in the corresponding processing position;

[0026] Step 2) Debug the mold opening and closing actions;

[0027] Step 3) Preliminary preparation: The heating system of the injection molding equipment heats the barrel according to the characteristics of the material, with the temperature in sections ranging from 150℃ to 240℃;

[0028] Step 4) The mold temperature treatment system adjusts the temperature of the upper and lower molds, setting the temperature to 40℃-60℃;

[0029] Step 5) Adjust the injection molding machine's operating mode;

[0030] Step 6) Start the injection process. Inject the raw material at the sprue at the top of the upper mold. The raw material flows into the workpiece through the sprue inside the upper mold until it flows and is formed.

[0031] Step 7) Perform pressure holding and cooling treatment on the molded product;

[0032] Step 8) Based on steps 1) to 7) above, the required protective layer is finally formed around the perimeter of the workpiece cavity to obtain a workpiece product with a protective layer.

[0033] Furthermore, the injection treatment in step 6) includes the following steps:

[0034] Step 11: Operate at a speed of 500 mm / s at a position 30 mm from the nozzle;

[0035] Step 22: Operate at a speed of 650 mm / s at a position 7.1 mm from the nozzle;

[0036] This invention also addresses another technical problem: providing the aforementioned application for protecting glass workpieces during the polishing process. To solve the above-mentioned technical problem, the technical solution of this invention is as follows:

[0037] An application for protecting glass workpieces during the polishing process includes the following steps:

[0038] Step 1: Place the completed workpiece with the protective layer into the corresponding position inside the polishing equipment;

[0039] Step 2: Place the glass product to be ground and polished into the workpiece cavity with protective layer described in Step 1;

[0040] Step 3: Start the polishing equipment and carry out the polishing operation;

[0041] Step 4: Clean the polished glass products.

[0042] Step 5: Following steps one through four above, the glass is finally polished to obtain a glass product with intact edges.

[0043] Furthermore, the grinding and polishing operation in step three includes fine grinding, coarse grinding, or polishing.

[0044] Furthermore, in the polishing operation of step three, the speed of the upper grinding disc is maintained at 5r / s-25r / s; the speed of the lower grinding disc is maintained at 10r / s-45r / s; the speed of the cruise ship is maintained at 1r / s-10r / s; and the polishing operation time is 20-90 minutes.

[0045] Furthermore, in the polishing operation of step three, the speed of the upper grinding disc is 25 r / s; the speed of the lower grinding disc is 45 r / s; the speed of the cruise ship is maintained at 10 r / s; and the polishing operation time is 50 minutes.

[0046] Furthermore, the cleaning operation in step four includes the following steps:

[0047] Place the polished glass products into a cleaning device and soak them in clean water for 1-5 minutes;

[0048] Place the glass products into an ultrasonic cleaning device containing cleaning solution and clean them thoroughly with the ultrasonic cleaning device for 3-8 minutes.

[0049] Remove the glass product and place it in the cleaning device. Rinse with clean water for 1-5 minutes.

[0050] The cleaning operation was completed after passing the inspection.

[0051] The material of the workpiece body of the present invention includes wood fiberboard and ceramic fiberboard; the shape of the workpiece body includes circle, square and triangle; the thickness is 0.2mm-5mm.

[0052] This invention provides a workpiece, manufacturing process, and application for protecting glass during the grinding and polishing process. By combining grinding and injection molding technologies, it eliminates cumbersome intermediate steps and achieves excellent overall molding results. Compared with existing technologies, this invention not only shortens workpiece manufacturing time but also facilitates mass production, significantly reducing production costs and ensuring consistent quality. Workpieces manufactured using this process guarantee the integrity of the glass product's edges during the grinding and polishing process, enhancing the controllability and certainty of grinding and polishing removal during production, and greatly improving the glass grinding yield. Attached Figure Description

[0053] Figure 1This is an overall structural diagram of a workpiece for protecting glass during the grinding and polishing process according to the present invention.

[0054] Figure 2 This is a structural diagram of a workpiece before grinding and finishing, used to protect glass during the grinding and polishing process according to the present invention.

[0055] Figure 3 This is a schematic diagram of a workpiece forming process for protecting glass during the polishing process according to the present invention.

[0056] Figure 4 This is a schematic diagram of the overall protective layer for protecting glass workpieces during the grinding and polishing process according to the present invention.

[0057] Figure 5 This is a manufacturing process flow diagram of a workpiece for protecting glass during the grinding and polishing process according to the present invention.

[0058] Figure 6 This is a detailed structural diagram of a protective layer for protecting glass workpieces during the grinding and polishing process, according to the present invention.

[0059] Figure 7 This is a structural diagram of one embodiment of the present invention for protecting a workpiece during the grinding and polishing process of glass;

[0060] Explanation of symbols in the attached drawings:

[0061] 1. Workpiece body; 2. Inlet; 3. Positioning hole; 4. Cavity; 5. Protective layer; 6. Main body; 7. Buckle part; 8. Upper mold; 9. Lower mold; 10. Feed port; 11. Cut; 12. Upper surface. Detailed Implementation

[0062] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0063] Example 1

[0064] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, a workpiece for protecting glass during the polishing process includes a workpiece body 1, a cavity 4 for placing glass products is provided on the workpiece body 1, and cuts 11 and glue inlets 2 are evenly provided along the four edges of the cavity 4. After the raw material is injected through the glue inlet 2, a protective layer 5 is formed on the upper surface 12 and lower surface of the four edges of the cavity 4. The protective layer 5 is mainly used to protect the glass products from damage caused by impact and movement during the polishing process.

[0065] Furthermore, the protective layer 5 includes a main body 6 and a pull-tab portion 7; the thickness of the pull-tab portion 7 is lower than the thickness of the main body 6, the shape of the main body 6 of the protective layer is consistent with the shape of the periphery of the cavity 4, the shape of the pull-tab portion 7 of the protective layer 5 is consistent with the shape of the cut 11, the protective layer 5 adopts a full-circle pull-tab fixing method, so that the protective layer 5 fits more firmly with the cavity 4 of the workpiece, and the pull-tab arrangement is evenly distributed, so that the force on each section and each side is more balanced, which is convenient for disassembly and replacement after subsequent processing wear.

[0066] Furthermore, the thickness of the protective layer 5 is less than the thickness of the glass product.

[0067] Furthermore, the main body 6 of the protective layer 5 has a width of 0.3 mm.

[0068] Furthermore, the buckle portion 7 of the protective layer 5 is shaped like a swallowtail.

[0069] Furthermore, the cavity 4 is set on the workpiece body 1. There are four cavities 4, and their shape is square, which is the same size as the mobile phone glass cover.

[0070] Furthermore, in this embodiment, the protective layer 5 is preferably made of polyurethane resin TPU. A protective layer of polyurethane resin TPU is formed around the perimeter of the cavity through a molding process. Because this material has good hardness, it can withstand the continuous grinding process of 80-120 cover glass sheets.

[0071] like Figure 5 As shown, the manufacturing process of this embodiment includes the following steps:

[0072] The shape processing steps are used to process the workpiece shape required by the grinding and polishing equipment.

[0073] The grinding and finishing step processes the workpiece obtained from the external machining step by machining various positioning holes, cavities or cuts on the surface of the workpiece.

[0074] In the forming process, a protective layer is formed around the periphery of the cavity of the workpiece obtained in the grinding and finishing process;

[0075] Following the above shape processing steps to the forming processing steps, the final workpiece required to protect the glass during the polishing process is formed.

[0076] Furthermore, the shape processing steps include stamping or CNC machining.

[0077] Furthermore, the machining process in the grinding finishing step includes rough grinding and fine grinding.

[0078] Furthermore, in this embodiment, the protective layer 5 is preferably made of polyurethane resin TPU. A protective layer of polyurethane resin TPU is formed around the perimeter of the cavity through a molding process. Because this material has good hardness, it can withstand the continuous grinding process of 80-120 cover glass sheets.

[0079] like Figure 5 As shown, the molding process further includes the following steps:

[0080] Step 1) Place the workpiece obtained from the grinding and finishing step into a 100T-200T injection molding machine and fix it in the corresponding processing position;

[0081] Step 2) Debug the mold opening and closing actions;

[0082] Step 3) Preliminary preparation: The heating system of the injection molding equipment heats the barrel according to the characteristics of the material, with the temperature in sections ranging from 150℃ to 240℃;

[0083] Step 4) The mold temperature treatment system adjusts the temperature of the upper and lower molds, setting the temperature to 40℃-60℃;

[0084] Step 5) Adjust the injection molding machine's operating mode;

[0085] Step 6) Start the injection process. Inject the raw material at the sprue at the top of the upper mold. The raw material flows into the workpiece through the sprue inside the upper mold until it flows and is formed.

[0086] Step 7) Perform pressure holding and cooling treatment on the molded product;

[0087] Step 8) Based on steps 1) to 7) above, the required protective layer is finally formed around the perimeter of the workpiece cavity to obtain a workpiece product with a protective layer.

[0088] Furthermore, the injection treatment in step 6) includes the following steps:

[0089] Step 11: Operate at a speed of 500 mm / s at a position 30 mm from the nozzle;

[0090] Step 22: Operate at a speed of 650 mm / s at a position 7.1 mm from the nozzle;

[0091] The application of this embodiment includes the following steps:

[0092] Step 1: Place the completed workpiece with the protective layer into the corresponding position inside the polishing equipment;

[0093] Step 2: Place the glass product to be ground and polished into the workpiece cavity with the protective layer from Step 1;

[0094] Step 3: Start the polishing equipment and carry out the polishing operation;

[0095] Step 4: Clean the polished glass products.

[0096] Step 5: Following steps one through four above, the glass is finally polished to obtain a glass product with intact edges.

[0097] Furthermore, the grinding and polishing operations in step three include fine grinding, rough grinding, or polishing.

[0098] Furthermore, in the polishing process of step three, the speed of the upper polishing disc is maintained at 5r / s-25r / s; the speed of the lower polishing disc is maintained at 10r / s-45r / s; the speed of the cruise ship is maintained at 1r / s-10r / s; and the polishing process takes 20-90 minutes.

[0099] Furthermore, in step three of the polishing process, the upper polishing disc speed is 25 r / s; the lower polishing disc speed is 45 r / s; the cruise ship speed is maintained at 10 r / s; and the polishing process lasts for 50 minutes.

[0100] Furthermore, the cleaning operation in step four includes the following steps:

[0101] Place the polished glass products into a cleaning device and soak them in clean water for 1-5 minutes;

[0102] Place the glass products into an ultrasonic cleaning device containing cleaning solution and clean them thoroughly with the ultrasonic cleaning device for 3-8 minutes.

[0103] Remove the glass product and place it in the cleaning device. Rinse with clean water for 1-5 minutes.

[0104] The cleaning operation was completed after passing the inspection.

[0105] In this embodiment, the workpiece body 1 is made of ceramic fiber board; the workpiece body 1 is circular in shape; and its thickness is 3mm.

[0106] Example 2

[0107] like Figure 7As shown, unlike Embodiment 1, the main body of the protective layer is 0.5mm wide, the pull tab of the protective layer is trapezoidal, and there are two cavities on the workpiece, which are the same size as the glass cover. In this embodiment, the protective layer 5 is preferably made of polypropylene (PP). Through the molding process, a protective layer of PP material is formed around the edges of the cavities. This material is hard enough to withstand the continuous grinding process of 80-100 cover glass sheets.

[0108] In this embodiment, the workpiece is made of wood fiberboard, is circular in shape, and has a thickness of 5mm.

[0109] Example 3

[0110] Unlike Embodiment 1, the main body of the protective layer is 0.4mm wide, the pull tab of the protective layer is cylindrical, and there is one cavity on the workpiece, which is the same size as the glass cover. In this embodiment, the protective layer 5 is preferably made of polyurethane resin (TPU). A polyurethane resin (TPU) protective layer is formed around the edges of the cavity through a molding process. Because this material has good hardness, it can withstand the continuous grinding process of 80-120 cover glass pieces.

[0111] In this embodiment, the workpiece is made of wood fiberboard, is circular in shape, and has a thickness of 1.5mm.

[0112] This invention provides a workpiece, manufacturing process, and application for protecting glass during the grinding and polishing process. Combining grinding and forming technologies, it eliminates cumbersome procedures, simplifies operation, and shortens workpiece production time, facilitating mass production, significantly reducing production costs, and ensuring consistent quality. The workpiece manufactured using this process features a specially structured and novelly designed protective layer around the perimeter of the workpiece's cavity. This layer adheres tightly to the cavity surface, ensuring the integrity of the glass product's appearance around the perimeter during grinding and polishing. It also enhances the controllability and certainty of the amount of material removed during production, greatly improving the glass grinding yield. The protective layer is arranged in a pull-tab pattern with even distribution, ensuring more balanced force on each section and side, facilitating quick disassembly and replacement after wear, saving time and costs.

[0113] The embodiments described above are preferred embodiments of the present invention. It should be noted that the terms "front end", "rear end", "middle", "above", "below", etc., used in this document to indicate orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the purpose of clearly describing the present invention, and are not intended to indicate or imply that the structure or component referred to must have a specific orientation or be constructed in a specific orientation, and therefore should not be construed as a limitation of the present invention.

Claims

1. A workpiece for protecting glass during the grinding and polishing process, comprising a workpiece body, characterized in that: A cavity for placing glass products is provided on the workpiece body. Cuts and glue inlets are evenly arranged around the perimeter of the cavity. After the raw material is injected through the glue inlet, a protective layer is formed on the upper and lower surfaces around the perimeter of the cavity. The protective layer is used to protect the glass products from damage caused by impact and movement during the polishing process. The protective layer includes a main body and a pull-tab part. The thickness of the pull-tab part is lower than the thickness of the main body part. The shape of the main body part of the protective layer is consistent with the perimeter of the cavity, and the shape of the pull-tab part of the protective layer is consistent with the shape of the cut.

2. The workpiece for protecting glass during the grinding and polishing process according to claim 1, characterized in that, The thickness of the protective layer is less than the thickness of the glass product.

3. The workpiece for protecting glass during the grinding and polishing process according to claim 1, characterized in that, The main body of the protective layer has a width of 0.1-5mm.

4. The workpiece for protecting glass during the grinding and polishing process according to claim 2, characterized in that, The pull tabs of the protective layer can be trapezoidal, cylindrical, dovetail-shaped, or square.

5. The workpiece for protecting glass during the grinding and polishing process according to claim 1, characterized in that, The cavity is at least one, and its shape includes square, circular and triangular.

6. The workpiece for protecting glass during the grinding and polishing process according to claim 1, characterized in that, The material of the workpiece body includes wood fiberboard and ceramic fiberboard; the shape of the workpiece body includes circle, square and triangle; the thickness is 0.2mm-5mm.

7. The workpiece for protecting glass during the grinding and polishing process according to any one of claims 1, characterized in that, The protective layer is made of materials including polyurethane resin or polypropylene.

8. A manufacturing process for protecting glass workpieces during the grinding and polishing process, as described in any one of claims 1-7, characterized in that... The process includes the following steps: the shape processing step, which processes the workpiece to obtain the shape required by the grinding and polishing equipment; The grinding and finishing step processes the workpiece obtained from the external machining step by machining various positioning holes, cavities or cuts on the surface of the workpiece. In the forming process, a protective layer is formed around the periphery of the cavity of the workpiece obtained in the grinding and finishing process; Following the above shape processing steps to the forming processing steps, the final workpiece required to protect the glass during the grinding and polishing process is formed. The molding process in the molding process step is injection molding. The forming process includes the following steps: Step 1) Place the workpiece obtained from the grinding and finishing step into a 100T-200T injection molding machine and fix it in the corresponding processing position; Step 2) Debug the mold opening and closing actions; Step 3) Preliminary preparation: The injection molding equipment's heating system heats the barrel according to the material characteristics, with segmented temperatures ranging from 150℃ to 240℃; Step 4) The mold temperature control system adjusts the temperature of the upper and lower molds, setting the temperature to 40℃-60℃; Step 5) Adjust the injection molding machine's operating mode; Step 6) Start the injection process. Inject the raw material at the sprue at the top of the upper mold. The raw material flows into the workpiece through the sprue inside the upper mold until it flows and is formed. Step 7) Perform pressure holding and cooling treatment on the molded product; Step 8) Based on steps 1) to 7) above, the required protective layer is finally formed on the upper and lower surfaces of the cavity edges of the workpiece to obtain a workpiece product with a protective layer; the protective layer includes a main body and a snap-on part, and the protective layer adopts a snap-on fixing method.

9. The manufacturing process for protecting glass workpieces during the polishing process according to claim 8, characterized in that, The shape processing steps include stamping or CNC machining.

10. The manufacturing process for protecting glass workpieces during the polishing process according to claim 8, characterized in that, The grinding and finishing process includes rough grinding and fine grinding.

11. The manufacturing process for protecting glass workpieces during the polishing process according to claim 8, characterized in that, The protective layer is a soft plastic layer.

12. The manufacturing process for protecting glass during the polishing process according to claim 11, wherein the injection treatment in step 6) includes the following steps: Step 11: Operate at a speed of 500 mm / s at a position 30 mm from the nozzle; Step 22: Operate at a speed of 650 mm / s at a position of 7.1 mm from the nozzle.

13. The application of any one of claims 1-7 for protecting glass workpieces during the polishing process, comprising the following steps: Step 1: Place the completed workpiece with the protective layer into the corresponding position inside the polishing equipment; Step 2: Place the glass product to be ground and polished into the workpiece cavity with protective layer described in Step 1; Step 3: Start the polishing equipment and carry out the polishing operation; Step 4: Clean the polished glass products. Step 5: Following steps one through four above, the glass is finally polished to obtain a glass product with intact edges on all four sides.

14. The application of the method according to claim 13 for protecting glass workpieces during the grinding and polishing process, characterized in that: The grinding and polishing operations in step three include fine grinding, coarse grinding, or polishing.

15. The application of the method according to claim 13 for protecting glass workpieces during the grinding and polishing process, characterized in that: In the polishing operation of step three, the speed of the upper grinding disc is maintained at 5r / s-25r / s; the speed of the lower grinding disc is maintained at 10r / s-45r / s; the speed of the cruise ship is maintained at 1r / s-10r / s; and the polishing operation time is 20-90 minutes.

16. The application of the method according to claim 13 for protecting glass workpieces during the grinding and polishing process, characterized in that: In the polishing operation of step three, the speed of the upper grinding disc is 25 r / s; the speed of the lower grinding disc is 45 r / s; the speed of the cruise ship is maintained at 10 r / s; and the polishing operation time is 50 minutes.

17. The application of claim 13 for protecting glass workpieces during the polishing process, wherein the cleaning operation in step four includes the following steps: Place the polished glass products into a cleaning device and soak them in clean water for 1-5 minutes; Place the glass products into an ultrasonic cleaning device containing cleaning solution and clean them thoroughly with the ultrasonic cleaning device for 3-8 minutes; then remove the glass products and place them in a cleaning device and rinse them with clean water for 1-5 minutes. The cleaning operation was completed after passing the inspection.

Images