Optical element pressing apparatus
A technology for molding and optical components, applied in glass molding, glass pressing, glass die-casting equipment, etc., can solve the problems of component enlargement, spring mechanism lengthening, molding device enlargement, etc., and achieve the effect of high-efficiency manufacturing
Inactive Publication Date: 2009-09-09
ASAHI GLASS CO LTD
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Problems solved by technology
Therefore, it has the disadvantage that the coil spring becomes loose when exposed to high temperature
In this case, however, there is a disadvantage that in order to additionally provide a water cooling mechanism, the components are enlarged and complicated
In addition, since the water cooling member contacts the upper mold during molding, there is also a disadvantage that the temperature of the upper mold drops rapidly and molding becomes unstable
Therefore, although a coil spring is used in Patent Document 1, even if a coil spring is used, a plurality of coil springs must be stacked in order to accommodate a spring with a capacity of 4.9 kN in a narrow space
As a result, the disadvantage arises that the spring mechanism becomes significantly longer, whereby the forming device is enlarged
As described above, even in the molding apparatus of Patent Document 1, there is still a problem
In addition, Patent Document 1 has no description about pressure distribution in the case where the lower die slides in the body die and pressurization is performed
Method used
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[0037] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. figure 1 shows an integral compression molding device according to an embodiment of the present invention, while figure 2 The structure of the main parts of the compression molding apparatus is shown. The press molding apparatus shown in these figures charges the glass material (glass blank) into the molding die 1, and pushes up the body mold (described below) of the molding die 1 by operating the pressurizing mechanism 2, thereby performing press molding . This compression molding is preferably performed in an inert gas such as nitrogen. For this reason, the molding die 1, the pressurizing mechanism 2, etc. are equipped inside the molding chamber 3 having an airtight structure.
[0038] The molding chamber 3 is arranged on the stage 10 , and the door 301 for loading the glass material G and carrying out the molding is equipped with a gate valve 11 . ...
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The present invention discloses a pressing apparatus for pressing a glass material with pairs of upper molds and lower molds thereby to form an optical element. In this pressing apparatus, lower-mold pressure applying means applies a pressure to the plural lower molds. A trunk mold guides the paired upper and lower molds. Pressure generating means acts to push up the trunk mold. Centering means centers the individual upper molds by sliding the trunk mold along the upper molds. The centering means includes a suspending member for suspending and supporting the individual upper molds and for moving the individual upper molds in a plane normal to the moving axis of the trunk mold, when the trunk mold is pushed up along the individual upper molds by the pressure generating means.
Description
technical field [0001] The present invention relates to an apparatus for compression molding a light source element, in particular to an apparatus for compression molding an optical element used when molding a high precision optical element such as an aspheric lens. Background technique [0002] In recent years, attention has been drawn to a method for precisely press-molding optical glass elements such as glass lenses, in which these can be used because the faces of the molded glass optical elements are not ground. noodle. Generally, in order to perform the above-mentioned method, a compression molding apparatus is used which press-moldes a glass material in a softened state within a body mold by using a molding mold that slides relative to the body mold to form in the glass material a shape corresponding to The optical function surface of the mold surface of the molding die. The important thing here is that when the product is relatively small, if molding is performed by...
Claims
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IPC IPC(8): C03B11/16
CPCC03B11/08C03B2215/69C03B2215/80C03B2215/60Y02P40/57C03B11/16
Inventor 宫崎直
Owner ASAHI GLASS CO LTD