Lens barrel forming mold

Abstract

The invention provides a lens barrel forming mold. The coaxiality of the formed lens barrel is well guaranteed. The lens barrel forming mold comprises a base, a supporting plate, a B plate, pressing blocks, a mold core, stripping plates, slide blocks, an A plate and a I-shaped plate, wherein the B plate is arranged on the base; the supporting plate is arranged between the B plate and the base to support the mold core; the stripping plates are arranged at the outer side of the circumference at the lower part of the mold core; the slide blocks are arranged at the outer side of the circumference at the upper part of the mold core; the pressing blocks are arranged at the outer sides of the stripping plates and the slide blocks on the B plate; the B plate, the stripping plates and the mold core are in clearance fit arrangement; the slide blocks and the mold core are tightly matched by conical surfaces; the A plate is arranged above the slide blocks and the pressing blocks and the central part of the A plate is provided with a sprue; the I-shaped plate is arranged above the A plate; a sprue is arranged corresponding to the position of the sprue; and the pressing blocks, the A plate and the I-shaped plate are detachably arranged on the B plate.

Description

technical field [0001] The invention relates to an optical device, in particular to a lens barrel forming mold for forming a camera lens barrel. Background technique [0002] Existing optical lenses generally include optical elements such as a plurality of eyeglasses, diaphragms, and filters housed in the lens barrel, and spacer rings for controlling the distance between each optical element. Since the lens barrel is usually cylindrical Each optical element is usually installed in the lens barrel in sequence along the axis of the lens barrel. refer to image 3 , in the assembly process of each optical element, the coaxiality of the lens barrel φ1, φ2, φ3, φ4 is very important, and the coaxiality of φ1, φ2, φ3, φ4 is required to be less than 0.02, otherwise the captured image will be formed The quality is affected and even leads to the failure of individual optical components. Known lens barrel is when forming, and the mold that adopts generally comprises upper mold, lower ...

AI Technical Summary

Problems solved by technology

Known lens barrel is when forming, and the mold that adopts generally comprises upper mold, lower mold and mold core, and upper mold and lower mold are positioned by positioning pin, and mold core is positioned by the positioning hole that is located in upper mold or lower mold. , due to the positioning between the upper and lower molds and the positioning of the mold core separately, it is difficult to guarantee the coaxiality of the formed lens barrel at φ1, φ2, φ3 and φ4

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