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Method and apparatus for inverting a flexible molding

A molding and flexible technology, applied in the field of flipping flexible moldings, can solve problems such as lens flipping

Active Publication Date: 2011-01-12
ALCON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lens may flip over during removal

Method used

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  • Method and apparatus for inverting a flexible molding
  • Method and apparatus for inverting a flexible molding
  • Method and apparatus for inverting a flexible molding

Examples

Experimental program
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Embodiment Construction

[0053] figure 1 A first embodiment of the device according to the invention is shown. The flexible molding is a contact lens CL housed in a container, in particular a test tube 1 . The test tube 1 may be a test tube as described in WO 03 / 016855 or WO 2007 / 042280 and filled with a liquid L, eg water. Let us assume that the contact lens CL does not have the proper orientation under which the lens is placed on the eye. This can be determined, for example, by image analysis, which can be carried out when the contact lens CL is accommodated in the cuvette 1 . This image analysis is conventional and does not require a more specific description.

[0054] from figure 1 It can be seen that this embodiment of the device according to the invention comprises an elongated piece 2 which itself comprises an adapter 20 having a hollow channel 200 and an elongated tube 21 . Adapter 20 is connected to a suction source (not shown). The tube 21 comprises a channel 210 leading to an engageme...

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PUM

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Abstract

A method for providing a flexible molding, in particular an ophthalmic lens such as a contact lens (CL), in a predetermined orientation, comprises the steps of determining the actual orientation of the molding (CL), and in case the molding has been determined as not having the predetermined orientation, inverting the flexible molding (CL) to the predetermined orientation.

Description

technical field [0001] The present invention relates to a method and a device for inversion of flexible mouldings, in particular ophthalmic lenses such as contact lenses, as defined in the respective independent claims. Background technique [0002] In mass production of flexible contact lenses, such as single-wear contact lenses, the molded contact lens can be removed from the mold half to which it is attached by means of a tweezer-type gripper such as disclosed in WO 2006 / 119993. known. However, the lens may flip over during removal. [0003] The contact lens removed from the mold half is then inserted into a test tube filled with liquid, eg as disclosed in WO 03 / 016855 or WO 2007 / 042880. The cuvette is rotatable from an insertion / removal position where the lens is inserted into the cuvette, to an inspection position where the lens is inspected, and then back to an insertion / removal position where the lens is removed from the cuvette after inspection is complete. [000...

Claims

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Application Information

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IPC IPC(8): B65B35/58B65B57/10
CPCB65B57/10B65B25/008B65B35/58B29D11/0024B29D11/00125B29D11/0098
Inventor G·莱斯格R·比埃尔
Owner ALCON INC