Non-isothermal glass mold pressing method

A non-isothermal, glass-based technology, applied in glass pressing, glass forming, glass reshaping, etc., can solve the problems of mold loss, silicon deformation, increased time cost and consumable cost, etc., to prolong service life and reduce production cost effect

Pending Publication Date: 2021-11-16
李莉华 +5
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Problems solved by technology

[0006] When the technical process was perfected, it was found that the silicon mold would deform during the molding process. On the one hand, the resulting lens was not in compliance with regulations, and on the other hand, it caused the loss of the mold. It was necessary to replace the new mold for the experiment, thus increasing the time cost and consumables. cost

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Embodiment Construction

[0032] Specific embodiments of the present invention will now be described in conjunction with the corresponding drawings. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided only so that the present invention will be thorough and complete so that those skilled in the art can fully describe the scope of the present invention. Wording used in the detailed description of the embodiments illustrated in the drawings should not limit the invention.

[0033] figure 1 It is a schematic diagram of the pressing steps in the compression molding method of the present invention. In the heating step, glass products to be pressed, such as glass balls 103, are placed on the lower mold 102. The type of glass that can be used is not particularly limited, and known glass can be selected according to the application. For example, optical glasses such as borosilicate glass, si...

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Abstract

The invention relates to a mold pressing method for prolonging the service life of a mold in a non-isothermal glass mold pressing process. The method comprises the following steps: placing a to-be-pressed glass product (103) on a lower mold (102), driving the lower mold (102) to rise at a certain speed by a motor, and heating the lower mold (102) by utilizing voltage so as to transfer heat to the glass product (103), so that the temperature of the glass product (103) rises to the conversion temperature (Tg) of glass or above; enabling the motor to continues drive the lower mold (102) to continue to ascend and carry the glass product (103) to move at the same time, so that the glass product (103) makes contact with the upper mold (101), and the pressing process is completed; wherein the upper mold (101) and the lower mold (102) are made of monocrystalline silicon materials. By adopting the mold pressing method provided by the invention, only the glass material is subjected to mold pressing deformation in the mold pressing process of the lens, and the shape and form of the silicon mold are kept unchanged, so that the service life of the silicon mold is prolonged, and the overall production cost is reduced.

Description

technical field [0001] The invention belongs to the fields of ultra-precision machining and non-isothermal glass molding, and in particular relates to a molding method provided in the non-isothermal glass molding process of high-efficiency ultra-precision glass lenses in order to improve the service life of the mold. Background technique [0002] Glass lenses are widely used in optical, optoelectronic, and optomechanical systems because of their good optical performance and imaging quality, increased light transmission, and reduced volume and weight of optical systems. In recent years, the ultra-precision manufacturing technology of glass lenses has been explored, and the compression molding method is the most efficient and convenient way to mass-produce aspheric lenses. In this method, a softened glass semi-finished product is compressed at high temperature through a special mold to make a lens. In the traditional process, the mold is generally made of tungsten carbide (WC...

Claims

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Application Information

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IPC IPC(8): C03B11/00C03B23/00
CPCC03B23/0013C03B11/00Y02P40/57
Inventor 李莉华杨任明何佳益宋博洋张爱琴夏菲
Owner 李莉华
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