Flame polishing device and flame polishing method for electronic glass

Abstract

The present invention discloses a flame polishing device and a flame polishing method for electronic glass. The polishing device of the present invention comprises an electronic control system, a first transport device, and a second transport device. The electronic control system is connected to a grabbing unit. The grabbing unit comprises a mechanical arm. The connector at the end of the mechanical arm can be flipped and connected to a mechanical suction cup. A flame spray gun is arranged in a polishing box. The flame spray gun is connected to the electronic control system and its switch is controlled by the electronic control system. The air intake pipe of the flame spray gun is respectively connected to an oxygen pipe, an air pipe, and a natural gas pipe. Based on the flame polishing device of the electronic glass of the present invention and utilizing the flame polishing method of the present invention, the grabbing unit is controlled by the electronic control system to automatically grab, flame polish, and automatically place the electronic glass, thereby realizing full automation of fine polishing of the electronic glass. No impurities are generated after polishing, and no post-processing is required.

Description

Technical Field

[0001] The invention relates to electronic glass post-processing technology, and in particular to a flame polishing device and a flame polishing method for electronic glass. Background Art

[0002] With the promotion of new wireless applications such as wireless charging and 5G, mobile phones will be equipped with more types of antennas, and the antenna area will become larger and larger. However, due to the problem of wireless signal shielding in metal shells, the traditional antenna implementation method must be upgraded. Combined with technical requirements such as dielectric constant, glass and ceramics are likely to become the perfect materials for the back covers of mid-to-high-end mobile phones in the future. However, there are certain limitations on the large-scale production of ceramic materials at present. 3D glass will become the mainstream material for the back covers of mobile phones in the future due to its comfortable feel and perfect fit.

[0003] At present, flexible glass has gradually been used in the display screens of electronic products. It has high clarity. However, glass is a brittle material. The end faces of the cut ultra-thin electronic glass (thickness less than 0.7mm) must be chamfered and polished to avoid cracking during subsequent processing and use. At present, the commonly used method is to process the end faces of ultra-thin electronic glass by mechanical grinding and polishing. However, during the processing, the polished glass debris will fall on the two surfaces of the electronic glass, and because the glass debris is small in particle size and thickness, it will easily adhere to the glass surface, and it cannot be removed by conventional cleaning methods. This brings great trouble to the electronic glass as a display material, and greatly reduces the yield of the display glass. When the polished glass is post-processed, whether it is chemical polishing or physical polishing, the debris generated in the contact with the outside world or the experiment after polishing has a great impact on the electronic substrate glass. The effect will not be very good during rolling due to the debris. Therefore, the subsequent operation is to ultrasonically clean the electronic substrate glass that has undergone this type of polishing, dry it after ultrasonic cleaning, and then package and store it. The overall process is very troublesome, and some debris is too small to be easy to clean, which will also have a negative impact on the substrate glass processing later.

[0004] Patent CN102476912A describes a glass anti-glare liquid composed of gum arabic, hydrofluoric acid, hydrochloric acid, ammonium hydrogen fluoride and polyethylene glycol, and uses the anti-glare liquid to treat the glass substrate. The gum arabic powder in the raw material is relatively expensive, and the cost is high. In addition, since hydrochloric acid is easy to volatilize and has strong corrosive ability, it is more harmful to operators during the processing. The thinning liquid that has treated the glass must be guided out and post-processed before it can be used as the thinning liquid again. The thinning liquid is not easy to recycle and reuse. Therefore, it is not practical to use the above-mentioned treatment liquid to treat electronic glass. The treatment of electronic glass also needs to start from its treatment device.

[0005] The polishing device in the prior art is semi-manually operated and has low efficiency. The method used is limited to surface micro-processing and cannot polish the edge of the electronic glass.

[0006] Therefore, how to develop a fully automatic method that can solve the problem that the electronic glass cannot be finely polished and needs post-processing in the prior art has become an urgent problem to be solved. Summary of the invention

[0007] The purpose of the present invention is to provide a flame polishing device and a flame polishing method for electronic glass. By polishing the electronic glass based on the flame polishing device and the flame polishing method of the present invention, the fine polishing of the electronic glass can be fully automated, and no impurities are generated after polishing, and no post-processing is required.

[0008] The purpose of the present invention is achieved through the following technical solutions:

[0009] A flame polishing device for electronic glass comprises an electronic control system, a first transport device and a second transport device for transporting the electronic glass, wherein the electronic control system is connected to a grabbing unit for grabbing the electronic glass, the grabbing unit comprises a mechanical arm, a connector at the end of the mechanical arm can be flipped and is connected to a mechanical suction cup, an open polishing box is arranged around the grabbing unit and the mechanical suction cup can extend into the polishing box, a polishing platform is arranged in the polishing box and flame spray guns are evenly arranged around the polishing platform, the flame spray guns are connected to the electronic control system and their switches are controlled by the electronic control system, and an air intake pipe of the flame spray gun is respectively connected to an oxygen pipe, an air pipe and a natural gas pipe.

[0010] Furthermore, the nozzle of the flame spray gun is trumpet-shaped.

[0011] Furthermore, the air inlet pipe of the flame spray gun is a copper pipe.

[0012] Furthermore, the oxygen pipeline, air pipeline and natural gas pipeline are all copper pipes, and are distributed in a square shape around the polishing platform.

[0013] The flame polishing method based on any one of the above-mentioned devices comprises the following specific steps:

[0014] Step (1): setting the operation cycle time of the electronic control system to control the robot arm;

[0015] Step (2): When the electronic control system controls the mechanical arm to move to the first transport device, the mechanical suction cup moves to the top of the rear shell of the electronic glass. After the electronic glass is adsorbed, the electronic control system controls the connector to flip 180 degrees so that the electronic glass faces upward.

[0016] Step (3): the electronic control system controls the mechanical arm to deliver the adsorbed electronic glass to the polishing platform in the polishing box, and the electronic control system controls the flame spray gun to open so that the flame spray gun simultaneously flame polishes the electronic glass on all sides, the size of the flame sprayed by the flame spray gun is the same as the thickness of the electronic glass, and the middle flame of the flame is used to heat the electronic glass;

[0017] Step (4): The electronic control system controls the mechanical arm to move to the second transport device and controls the connecting head to flip 180 degrees so that the electronic glass faces downward, and the mechanical suction cup releases the electronic glass so that the electronic glass falls to the second transport device.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] Based on the flame polishing device of the electronic glass of the present invention, and utilizing the flame polishing method of the present invention, the mechanical suction cup is controlled by the electronic control system, so as to periodically and automatically grab the electronic glass that needs to be flame polished after cutting from the first transport device. After the mechanical suction cup grabs the electronic glass, it is turned over through the connecting head so that the electronic glass is facing upward, and then the mechanical arm is extended to send the mechanical suction cup and the electronic glass to the polishing platform in the polishing box. At this time, the electronic control system controls to open the flame spray gun to flame polish the electronic glass. The evenly distributed flame spray gun can prevent the shrinkage phenomenon caused by uneven hot and cold glass. The size of the heating flame is controlled to be the same as the thickness of the electronic glass, so that the flame will not affect the structural changes inside the glass surface. After heating and polishing, no impurities are generated, and the surface of the electronic glass is flat, smooth and clean. After reaching the polishing time set by the electronic control system, the polishing ends. The electronic control system then controls the mechanical arm to shrink and rotate the mechanical arm, drive the mechanical suction cup and the electronic glass to leave the polishing box, and finally drive the mechanical suction cup and the electronic glass to move above the second transport device, turn the electronic glass downward through the connecting head of the mechanical arm, and adjust the pressure of the mechanical suction cup so that the electronic glass falls directly into the second transport device. It can be seen that the present invention can make the polishing process of electronic glass fully automated, with high continuous production efficiency, and can avoid the harm and potential safety hazards to the human body caused by the high-temperature working environment, and no impurities are generated after polishing, and no post-processing is required. It is suitable for the polishing process of mobile phone substrate glass, 5G mobile phone shell, ultra-thin glass, flexible glass, etc.

[0020] Furthermore, the trumpet-shaped nozzle enables the flame sprayed by the flame spray gun to have a larger area, thereby reducing the number of flame spray guns required to be used. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Schematic diagram of the structure of the grabbing unit of the invention.

[0023] In the figure: 1-electronic control system, 2-oxygen pipeline, 3-air pipeline, 4-natural gas pipeline, 6-mechanical arm, 7-connecting head, 8-mechanical suction cup, 9-first transport device, 10-second transport device, 11-grabbing unit, 12-flame spray gun. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, the flame polishing device for electronic glass of the present invention comprises an electronic control system 1, a first transport device 9, and a second transport device 10. The first transport device 9 is used to transport the cut electronic glass to be polished, and the second transport device 10 is used to transport the electronic glass after polishing. The electronic control system 1 is connected to a grabbing unit 11 for grabbing the electronic glass. Figure 2 As shown, the grasping unit 11 includes a robotic arm 6, a connecting head 7 at the end of the robotic arm 6 can be flipped and the connecting head 7 is connected to a mechanical suction cup 8, and the electronic control system 1 can control the robotic arm 6 to rotate, extend, and perform other actions, and can adjust the pressure of the mechanical suction cup 8 to absorb or release the electronic glass.

[0026] An open polishing box is provided below the mechanical arm 6, and the mechanical arm 6 can freely enter and exit the polishing box, that is, the mechanical suction cup 8 can adsorb the electronic glass and freely enter and exit the polishing box. A polishing platform is provided in the polishing box and flame spray guns 12 are evenly distributed around the polishing platform. The nozzle of the flame spray gun 12 is preferably trumpet-shaped. In this embodiment, the flame spray guns 12 are distributed around the polishing platform in a square shape in groups of 3. The flame spray guns 12 are connected to the electronic control system 1 and their switches are controlled by the electronic control system 1. The switches of all flame spray guns 12 can be integrated into a main switch, and then the main switch is connected to the electronic control system 1. The air intake pipe of the flame spray gun 12 is respectively connected to the oxygen pipe 2, the air pipe 3, and the natural gas pipe 4. In this embodiment, the air intake pipe of the flame spray gun 12, the oxygen pipe 2, the air pipe 3, and the natural gas pipe 4 are all high-temperature and corrosion-resistant copper pipes. The oxygen pipe 2, the air pipe 3, and the natural gas pipe 4 are distributed in a square shape around the polishing platform.

[0027] Method for flame polishing using the flame polishing device for electronic glass of the present invention:

[0028] First determine the time when the electronic glass needs to be flame polished, set the action cycle time of the robot arm 6 according to the time, and control the operation of the robot arm 6 by the electronic control system 1, that is, determine the time required for the robot arm 6 to grab and absorb the electronic glass from the first transport device 9, the time to move to the polishing box and stay in the polishing box, and the time to place the polished electronic glass on the second transport device 10.

[0029] When the flame polishing device for electronic glass of the present invention is working normally, the first transport device 9 is responsible for transporting the cut electronic glass, the electronic control system 1 controls the mechanical arm 6 to move to the first transport device 9, and moves the mechanical suction cup 8 to just above the rear shell of the electronic glass. After reaching the specified position, the electronic control system 1 controls the mechanical arm 6 to extend, and the mechanical suction cup 8 moves downward and finally close to the electronic glass. Then the electronic control system 1 adjusts the internal pressure of the mechanical suction cup 8 to adsorb the electronic glass and then flips it 180° through the connector 7 so that the electronic glass faces upward.

[0030] Next, the electronic control system 1 controls the mechanical arm 6 to move toward the polishing box to send the mechanical suction cup 8 and the electronic glass on the mechanical suction cup 8 to the polishing platform in the polishing box. The electronic control system 1 controls the flame spray gun 12 to open, so that the flame spray gun 12 heats the electronic glass on all sides at the same time to prevent the glass from shrinking due to uneven hot and cold. Air, oxygen and natural gas are mixed with each other before ignition. Natural gas plays a combustion role, oxygen plays a combustion-supporting role, and air plays a protective gas and accelerates the rate of gas eruption. The faster the gas erupts, the faster the flame sprays. During the heating process, the size of the heating flame is the same as the thickness of the glass back shell of the mobile phone. The distance between the flame spray gun 12 and the electronic glass is controlled, and heating is performed through the middle flame of the flame. No impurities are generated after heating and polishing. The surface of the electronic glass back shell is flat, smooth and clean, and no post-processing is required.

[0031] After polishing is completed, the electronic control system 1 controls the robot arm 6 to rotate toward the second transport device 10. When it reaches the top of the second transport device 10, it is flipped through the connecting head 7 so that the electronic glass faces downward. Then the electronic control system 1 adjusts the internal pressure of the mechanical suction cup 8 to make the mechanical suction cup release the electronic glass, and the electronic glass falls onto the second transport device 10. After the robot arm 6 is reset, a cycle of electronic glass flame polishing process is completed.

Claims

1. A flame polishing device for electronic glass, characterized in that: The invention comprises an electronic control system (1), a first transport device (9) and a second transport device (10) for transporting electronic glass, wherein the electronic control system (1) is connected to a gripping unit (11) for gripping the electronic glass, the gripping unit (11) comprises a mechanical arm (6), a connector (7) at the end of the mechanical arm (6) can be turned over and the connector (7) is connected to a mechanical suction cup (8), an open polishing box is arranged around the gripping unit (11) and the mechanical suction cup (8) can be extended into the polishing box, a polishing platform is arranged in the polishing box and flame spray guns (12) are evenly arranged around the polishing platform, the flame spray guns (12) are connected to the electronic control system (1) and the electronic control system (1) controls the switch thereof, and an air intake pipe of the flame spray gun (12) is respectively connected to an oxygen pipe (2), an air pipe (3) and a natural gas pipe (4).

2. The flame polishing device for electronic glass according to claim 1, characterized in that: The nozzle of the flame spray gun (12) is in a trumpet shape.

3. The flame polishing device for electronic glass according to claim 1, characterized in that: The air inlet pipe of the flame spray gun (12) is a copper pipe.

4. The flame polishing device for electronic glass according to claim 1 or 3, characterized in that: The oxygen pipeline (2), air pipeline (3) and natural gas pipeline (4) are all copper pipes and are distributed in a square shape around the polishing platform.

5. A flame polishing method according to any one of the above claims, characterized in that: The specific steps include: Step (1): setting the operation cycle time of the electronic control system (1) to control the robot arm (6); Step (2): the electronic control system (1) controls the mechanical arm (6) to move to the first transport device (9), and the mechanical suction cup (8) moves to the top of the rear shell of the electronic glass. After the electronic glass is adsorbed, the electronic control system (1) controls the connector (7) to flip 180 degrees, so that the electronic glass faces upwards. Step (3): the electronic control system (1) controls the mechanical arm (6) to deliver the adsorbed electronic glass to the polishing platform in the polishing box, and the electronic control system (1) controls the flame spray gun (12) to open so that the flame spray gun (12) simultaneously flame-polishes the electronic glass on all sides, the size of the flame sprayed by the flame spray gun (12) is the same as the thickness of the electronic glass, and the middle flame of the flame is used to heat the electronic glass; Step (4): The electronic control system (1) controls the mechanical arm (6) to move to the second transport device (10) and controls the connector (7) to flip 180 degrees so that the electronic glass faces downward, and the mechanical suction cup (8) releases the electronic glass so that the electronic glass falls to the second transport device (10).

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