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Die pressing device adopting tin liquor to support vacuumizing for glass and die pressing process of die pressing device

A vacuuming device and vacuuming technology, applied in glass pressing, glass forming, glass manufacturing equipment, etc., can solve the problems of uneven heating or annealing, cracks, warping and deformation of the preform, and improve the filling rate Inconsistency, increased contact area, and improved heating efficiency

Active Publication Date: 2019-02-15
SHAOYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of using a traditional mold to press molten glass into shape, the force on the glass preform will be uneven, which will easily lead to inconsistent filling rates of each microstructure, and the difference between the surface of the preform and the surface of the mold will make the preform heated or annealed unevenly. , the uneven distribution of residual stress inside the forming element, especially for thin glass plates, is prone to warping and deformation, and even leads to cracks in severe cases

Method used

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  • Die pressing device adopting tin liquor to support vacuumizing for glass and die pressing process of die pressing device
  • Die pressing device adopting tin liquor to support vacuumizing for glass and die pressing process of die pressing device
  • Die pressing device adopting tin liquor to support vacuumizing for glass and die pressing process of die pressing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Refer to attached figure 1 , attached Figure 2a -2d and attached Figure 4 , this embodiment discloses a glass molding device with tin liquid and vacuum pumping, including:

[0045] The liquid tin container 1 is filled with liquid tin.

[0046] Cover 2, cover 2 is arranged on the open end of tin liquid container 1, and encloses molding space with tin liquid container 1; Offers on the cover 2 the nitrogen inlet hole 21 that is used to pass into nitrogen and is used for discharging described Oxygen exhaust holes 22 in the molding space; a circular through hole 23 for the passage of the sleeve 3 is provided at the center of the cover 2 , and the diameter of the circular through hole 23 is not smaller than the maximum diameter of the mold 4 .

[0047] Sleeve 3, one end of the sleeve 3 is closed, one end is open, and its open end is set through the top of the cover 2 towards the liquid surface of the tin liquid, and is slidably connected with the cover 2; the closed end ...

Embodiment 2

[0063] Refer to attached figure 1 , attached Figure 3a -3d and attached Figure 4 , this embodiment takes the manufacture of micro-columnar glass arrays as an example, the device used is the same as that of embodiment 1, in the specific preparation process, except that the molding process of S3 is different from that of embodiment 1, the rest of the steps are the same as that of embodiment 1.

[0064] Specifically, the specific process of S3 molding in this embodiment is:

[0065] Heat the viscosity of glass 5 to 10 6 ~10 8 After dPa·s, start the sleeve drive device 7, the drive sleeve 3 continues to move towards the bottom wall direction of the tin liquid container 1, until the mold 4 and the glass 5 move below the tin liquid level, start the vacuum device to further reduce The inner pressure of the lower sleeve increases the pressure difference between the sleeve 3 and the molding space. After standing still for 1 min, the glass 5 is filled into the mold 4 to form a mi...

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Abstract

The invention discloses a die pressing device adopting tin liquor to support vacuumizing for glass. The die pressing device comprises a tin liquor container, a cover, a sleeve, a vacuumizing device, asleeve driving device, a die, glass and a heating device, wherein the tin liquor container is filled with tin liquor, and the heating device is used for heating the tin liquor; the cover covers an open end of the tin liquor container, and die pressing space is defined by the cover and the tin liquor container; the sleeve driving device, the sleeve and the die are connected sequentially; the glassis adsorbed at the bottom end of the die under driving of the vacuumizing device, the sleeve driving device drives the sleeve to reciprocate in the direction of the bottom wall of the tin liquor container and drives the glass and the die to be soaked in the tin liquor, a die pressing process is completed, and a microlens or a micro-columnar glass array is prepared finally. The glass is heated andsoftened with the tin liquor and pressure in the sleeve is changed by the vacuumizing device, so that through holes of the die are filled with softened glass, and the glass has the characteristics ofhigh filling efficiency and uniform filling.

Description

technical field [0001] The invention relates to the technical field of molding devices for thin glass elements with microstructures, and more specifically relates to a molding device and molding process for manufacturing microlenses or microcolumnar glass arrays with tin liquid combined with a vacuum device to assist molding. Background technique [0002] The use of compression molding to manufacture optical glass components is an advanced manufacturing technology that can increase productivity and enable mass production to meet market demand. Glass compression molding belongs to thermoforming technology, which is an efficient and high-precision processing method that uses a high-precision mold to compress and deform a glass preform of a certain shape under high temperature and oxygen-free conditions, and directly replicates the mold cavity. The filling rate of the glass preform, the temperature and stress distribution inside the glass directly affect the molding quality of ...

Claims

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Application Information

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IPC IPC(8): C03B11/04
CPCC03B11/04
Inventor 朱科军许博文张高峰郭怀仲徐志强朱小龙
Owner SHAOYANG UNIV
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