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3D Curved ultrathin glass bending and forming device and manufacturing method

A technology of ultra-thin glass and bending forming, which is applied in glass forming, glass reshaping, glass manufacturing equipment, etc., can solve the problems of lower pass rate in the production process, poor bending accuracy, cracking of ultra-thin glass, etc., and achieve saving Effect of working time, reducing stress, ensuring light transmission and cleanliness

Active Publication Date: 2015-08-19
海程光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current invention patents are mainly aimed at automobile windshields or condenser mirrors, such as patents CN101720308A, CN1856451A, CN103402934A, etc., all of which are aimed at bending glass with a thickness greater than 1 mm, while the thickness of ultra-thin glass used for screen protection is generally 0.1- 0.4 mm, parameters such as forming device, mold shape, stress control, and temperature field control are very critical in the hot bending process of ultra-thin glass, which is quite different from traditional thick glass bending. Traditional thick glass hot bending devices and methods are difficult to meet Hot bending requirements for ultra-thin glass, especially, during the hot bending process, glass heating and cooling may lead to quality defects such as cracking, fracture, optical distortion and poor bending accuracy of ultra-thin glass, resulting in qualified products in the production process rate reduction while increasing costs

Method used

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  • 3D Curved ultrathin glass bending and forming device and manufacturing method

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Experimental program
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Effect test

Embodiment 1

[0031] The present invention provides such figure 1 A 3D curved ultra-thin glass bending forming device shown includes a turntable 1 , a die 2 , a punch 3 , a cylinder 4 , a glass transfer mechanism 5 , a tunnel furnace 7 , a vacuum system 8 and an electrical control operating system 9 .

[0032] Described die 2 is arranged evenly around the turntable 1; Described punch 3 is arranged on the corresponding top of the die 2 of turntable 1 station, and cylinder 4 is set above punch 3; Described turntable 1, The glass transfer mechanism 5 and the tunnel furnace 7 are sequentially connected; the electrical control operating system 9 is arranged on the side of the device; the vacuum system 8 is arranged in the casing of the molding device.

[0033] The turntable 1 is made of quartz glass, and a rotating mechanism is arranged in the housing of the molding device corresponding to the turntable 1; the turntable 1 is evenly provided with 6 concave molds 2 made of quartz glass material, a...

Embodiment 2

[0039] Based on the device of embodiment 1, a manufacturing method of a 3D curved ultra-thin glass is as follows:

[0040] (1) Automatically controlled by the temperature controller, die 2 is raised to 450°C at a rate of 30°C / min, and then raised to 650°C at a rate of 50°C / min, and the temperature of punch 3 is raised to 50°C / min Speed ​​up to 650°C.

[0041] (2) The ultra-thin glass 6 with a thickness of 0.3 mm is cut to a size of 154.6×74.8 mm in length and width, and is ground and chamfered by a CNC machine tool. ° on the die 2, and turn on the turntable 1 to rotate clockwise.

[0042] (3) When the die 2 on the turntable 1 rotates to the position corresponding to the punch 3, press the punch 3 down, and when the temperature reaches the softening temperature of ultra-thin glass 650 °C, vacuumize to -0.15 Pa, and use a negative Press to preform the ultra-thin glass 6 for 10 seconds, then apply a pressure of 0.2 Pa on the punch 3 and keep the pressure for 5 seconds, then fil...

Embodiment 3

[0045] Based on the device of embodiment 1, a manufacturing method of a 3D curved ultra-thin glass is as follows:

[0046] (1) Automatically controlled by the temperature controller, die 2 is raised to 500°C at a rate of 10°C / min, and then raised to 680°C at a rate of 100°C / min, and the temperature of punch 3 is raised to 100°C / min Speed ​​up to 680°C.

[0047] (2) The ultra-thin glass 6 with a thickness of 0.2 mm is cut to a size of 154.6×74.8 mm in length and width, and is ground and chamfered by a CNC machine tool, and then the ultra-thin glass 6 is placed 2.6 mm inwards from the two long sides in turn. On the die 2 bent at 5°, turn on the turntable 1 and turn it clockwise.

[0048] (3) When the die 2 on the turntable 1 rotates to the position corresponding to the punch 3, press the punch 3 down, and when the temperature reaches the softening temperature of ultra-thin glass at 680 °C, vacuumize to -0.1 Pa, and use a negative Press to preform the ultra-thin glass 6 for 8 s...

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Abstract

The invention discloses a 3D curved ultrathin glass bending and forming device and a manufacturing method. The device comprises a rotor disc, concave dies, a convex die, a cylinder, a glass transfer mechanism, a tunnel furnace, a vacuum system and an electric control operating system, and a plurality of concave dies are arranged on the rotor disc. By adopting the device, the concave dies and the convex die are quickly heated in different stages; the ultrathin glass is sequentially placed on the concave dies of the rotor disc and is subjected to preheating; when the ultrathin glass rotates and reaches the corresponding work station on the convex die, the convex die is pressed, and a far infrared lamp tube is utilized to quickly heat to the glass softening point; in addition, the ultrathin glass on the concave dies is sucked and the convex die is pressurized by virtue of the vacuum system, so that the ultrathin glass is bended; the ultrathin glass is transferred to the tunnel furnace to be cooled by virtue of the glass transfer mechanism, so that the 3D curved ultrathin glass can be manufactured.

Description

technical field [0001] The invention relates to a bending forming device and a manufacturing method of 3D curved ultra-thin glass, in particular to a bending forming device and a batch manufacturing method of 3D curved ultra-thin glass used for a curved display screen protective film. Background technique [0002] Recently, curved display technology has become increasingly mature and has begun to be applied in the display field. For example, Apple, Samsung and LG mobile phone displays have begun to use curved display technology. The application of curved display technology can greatly improve the display design. The degree of freedom is also the trend of personalized development of display screens such as mobile phones in the future. For example, the Apple Iphone6 ​​mobile phone recently launched by Apple adopts the arc edge technology with four edges bent downward. Therefore, there is an urgent need for a technology to realize the bending of ultra-thin glass for the protect...

Claims

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Application Information

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IPC IPC(8): C03B23/03
CPCY02P40/57
Inventor 朱归胜徐华蕊
Owner 海程光电科技有限公司
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