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Process for producing glass molding, apparatus therefor and glass molding

A glass forming body and manufacturing method technology, applied in glass pressing, glass manufacturing equipment, glass molding, etc., can solve the problem of long time for one molding

Inactive Publication Date: 2010-03-24
KONICA MINOLTA OPTO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, it is necessary to repeatedly heat and cool the molded body and the molding die for each molding injection. In order to suppress the temperature variation during press molding and perform molding with good reproducibility, it takes a long time for one molding, so there is a fundamental problem. The problem

Method used

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  • Process for producing glass molding, apparatus therefor and glass molding
  • Process for producing glass molding, apparatus therefor and glass molding
  • Process for producing glass molding, apparatus therefor and glass molding

Examples

Experimental program
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Effect test

Embodiment approach 1

[0054] Refer to attached figure 1 ~ attached image 3 , the method of manufacturing the glass molded article according to the first embodiment of the present invention will be described. figure 1 , figure 2 It is a schematic diagram of the glass molding manufacturing apparatus 10 used in this embodiment. figure 1 Shows the state in which molten glass drops are dripped from the nozzle to the lower mold in the supply process, figure 2 It shows the state of the molten-glass drop which was supplied by pressurization with the molding die in a pressurization process. image 3It is a flow chart of the manufacturing method of a glass molded object in this embodiment.

[0055] figure 1 , figure 2 Shown in the glass molded body manufacturing apparatus 10, wherein, is equipped with the molding die 15 that is used for pressure molding molten glass drops, and this molding die 15 includes lower mold 11 and upper mold 12. In addition, a melting tank 42 storing molten glass 44 and a...

Embodiment approach 2

[0080] Next refer to Figure 4 , the method of manufacturing the glass molded article according to the second embodiment of the present invention will be described. Figure 4 It is a schematic diagram of the glass molding manufacturing apparatus 20 used in 2nd Embodiment, and has shown the state of the supply process which drops the molten glass drop 43 from the nozzle 41 to the lower mold|type 11.

[0081] The glass forming body manufacturing apparatus 20 differs from the glass forming body manufacturing apparatus 10 in the 1st Embodiment demonstrated above in the detection means for detecting that the dropped molten glass drop 43 has reached a predetermined position. Figure 4 The shown glass molded body manufacturing apparatus 20 is equipped with a load sensor 21 at the lower part of the lower mold 11 . Once the load sensor 21 detects the impact force generated when the molten glass drop 43 dropped from the nozzle 41 collides with the lower mold 11, the information is sent...

Embodiment approach 3

[0085] Next refer to Figure 5 , Figure 6 , the method of manufacturing the glass molded article according to the third embodiment of the present invention will be described. Figure 5 It is a schematic diagram of the glass molding manufacturing apparatus 30 used in 3rd Embodiment, and has shown the state of the supply process of making molten glass drip-feed to a lower mold|type. Figure 6 It is a schematic flow chart of the manufacturing method of the glass molded object in this embodiment.

[0086] The glass molded body manufacturing apparatus 30 differs from the glass molded body manufacturing apparatus 10 in the first embodiment described above in that it has a through hole 34 for supplying fine molten glass drops 33 to the lower mold. Part 36. In addition, the molding die 35 includes a lower die 31 and an upper die 32 having a small molding surface. Other structures are the same as those of the glass molded body manufacturing apparatus 10 .

[0087] As in the case ...

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Abstract

A process for producing a glass molding, in which a glass molding of stable quality can be efficiently produced through minimizing of temperature fluctuation of molten glass drops at pressure moldingoperation; and an apparatus for production of a glass molding used in this process. Molten glass drops are fed into an inferior die by causing the molten glass drops to fall from above toward the inferior die. The arrival of molten glass drops having fallen at a given location is detected, and pressurization of the molten glass drops by means of molding dies is initiated upon the passage of a given time since the detection.

Description

technical field [0001] The present invention relates to a method for manufacturing a glass molded body that can be used as various optical elements and the like, a manufacturing apparatus for the glass molded body, and a glass molded body manufactured by the manufacturing method. Background technique [0002] In recent years, glass optical elements have been widely used as lenses for digital cameras, lenses for optical pickup devices such as DVDs, camera lenses for mobile phones, coupling lenses for optical communication, and the like. As such a glass optical element, a glass molded body produced by press-molding a glass raw material with a molding die is often used. [0003] As a method of manufacturing a glass molded body, the following method has been widely used in the past: making a glass raw material for molding with a predetermined quality and shape in advance, heating the raw glass raw material for molding together with a molding die to a temperature at which glass c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B11/16G02B3/00
CPCC03B11/16
Inventor 速水俊一釜田善浩杉山肇世良田馨
Owner KONICA MINOLTA OPTO