Mold core and lens mold

Abstract

The invention provides a mold core which comprises a mold core body; the mold core body is provided with an outer contact surface and a plurality of micro-dimpled grains; the multiple micro-dimpled grains are recessed inwards from the outer contact surface; the outer contact surface is in close contact with the inner surface of a mold hole of a mold base; and the multiple micro-dimpled grains enable a part of the inner surface of the mold hole of the mold base not to be in contact with the outer contact surface of the mold core body. The contact area of the inner surface of the mold hole and the outer contact surface of the mold core body can be reduced through the multiple micro-dimpled grains, so that the resistance generated when the mold core and the mold base relatively act is reduced. The invention further provides a lens mold.

Description

technical field [0001] The invention relates to a mold core and a lens mold. Background technique [0002] The traditional lens mold is basically composed of a mold base and a mold core, wherein the mold base has a mold hole, and the mold core is penetrated in the mold hole. When the mold moves, the mold base system is fixed, and the mold core system is controlled to move relative to the mold base in the mold hole. [0003] However, such traditional lens molds require heating when making lenses. For example, making glass lenses requires a thermocompression molding process, while plastic lenses require an injection molding process, and the mold needs to be heated to the process temperature. In addition, due to the difference in structural design and / or material itself, the mold base and the mold core have different degrees of thermal expansion at high temperatures, causing the mold core to be stuck in the die hole under high temperature conditions; if the mold core is forced...

AI Technical Summary

Problems solved by technology

[0005] However, since the balls and / or lubricating elements are additionally sleeved on the outer contact surface of the mold core, it is necessary to reserve a space for the balls and / or lubricating elements between the mold core and the mold base, and in order to maintain the existing mechanical strength Under the premise of high performance and action efficiency, this new type of mold has a larger appearance volume and takes up more space than traditional molds.

[0006] In addition, since the balls and / or lubricating parts are additionally sleeved on the outer contact surface of the mold core, if the balls and / or lubricating parts are not properly fixed on the outer contact surface of the mold core and fall off, the When the mold core moves relative to the mold base in the die hole, the above-mentioned balls and / or lubricating parts may cause the mold core to be stuck in the die hole, and even cause irreversible damage to the mold core and the die hole

[0007] In summary, both traditional molds and / or existing new molds still have technical problems that cannot be solved for a long time, so that the lens production efficiency cannot be effectively improved and / or the lens production cost cannot be effectively reduced

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