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Loose block for lens molding die and mold for lens molding having the same

A technology for forming molds and loose blocks, which is applied in the field of lens forming molds, can solve problems such as difficulty in achieving mold precision, and achieve the effect of simple thickness and good precision

Active Publication Date: 2019-04-05
NIDEC SANKYO (DONGGUAN) PRECISION CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to achieve the above-mentioned mold precision by simply suppressing the tolerance of each part

Method used

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  • Loose block for lens molding die and mold for lens molding having the same
  • Loose block for lens molding die and mold for lens molding having the same
  • Loose block for lens molding die and mold for lens molding having the same

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Experimental program
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Effect test

Embodiment Construction

[0061]

[0062] Hereinafter, embodiments of the loose block for lens molding dies of the present invention and the mold for lens molding having the same will be described in detail with reference to the drawings. The lens molding mold 910 of this embodiment is an example of a multi-cavity mold for molding a plastic lens used in an imaging system lens unit.

[0063] figure 1 It is a schematic diagram showing the overall structure of an injection molding machine 900 having a lens molding die 910 according to this embodiment. The mold 910 for lens molding is attached to the injection molding machine 900 by attaching the fixed side mounting plate 912 to the fixed platen 921 of the injection molding machine 900 and the movable side mounting plate 914 to the movable platen 922 . The injection molding machine 900 opens and closes the movable side plate 915 which is a plate and the fixed side plate 913 which is a plate at the parting line PL to form and take out a molded body. The...

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PUM

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Abstract

The invention relates to a loose piece for a lens molding die and a lens molding die having the loose piece, and the thickness of a molding body which is plastic lens can be conveniently adjusted with good precision. According to the invention, the technical problems can be solved, the loose piece for the lens molding die comprises: a first loose piece which comprises a recess that comprises a through hole on the bottom surface and a second loose piece which is embedded with the recess of the first loose piece, an end face on one side of the bottom surface of the recess of the second loose piece serves as a front face, an end face on the side opposite to the front face of the second loose piece serves as a rear face, the front face of the second loose piece comprises a projection which is the lens molding part is embedded with the through hole of the recess and a plane part which is opposite to the bottom surface of the recess, and a first elastic component is configured between the bottom surface of the recess and the plane part of the second loose piece.

Description

technical field [0001] The present invention relates to a loose block for a lens molding die and a mold for lens molding having the loose block. Background technique [0002] Patent Document 1 below discloses a mold capable of adjusting the thickness of a molded body, that is, a lens, by compressing and deforming an elastically deformable spacer member using a screw. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2007-125809 [0004] In order to improve the molding accuracy of an injection molding die, it is necessary to suppress the tolerance of each part constituting the die as small as possible. Especially in the mold of the loose block method, it is necessary to fix the loose block to prevent errors in the position of the loose block due to the gap provided in the loose block receiving part. In addition, with the high resolution of imaging system lens units (vehicle cameras, surveillance cameras, etc.) in recent years, molds for molding plastic l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/26B29C45/36B29C45/80B29C33/76B29L11/00
CPCB29C33/76B29C45/26B29C45/36B29C45/80B29C2045/363B29L2011/0016
Inventor 高野雅也
Owner NIDEC SANKYO (DONGGUAN) PRECISION CORPORATION