Apparatus for cleaning ophthalmic components
View Patent ↗The present invention discloses an apparatus for cleaning ophthalmic devices. The apparatus has a conveying system for transporting lens mold carriers to a cleaning station. The cleaning station has at least one movable cleaning assembly which is situated above the lens mold carrier and has a recess. When the cleaning assembly is lowered to the lens mold carrier, a substantially enclosed or enclosed cavity containing the lens mold is created by the carrier and the recess of the cleaning assembly. Compressed gas is injected into the cavity to dislodge any debris that may be present on the lens molds, and a vacuum is employed to remove gas and debris from the cavity.
1. A cleaning apparatus for a lens mold half having a flange, comprising a cleaning assembly which includes a gas inlet, a gas outlet, and a surface having a cylindrical recess for accommodating the lens mold and a raised cylindrical portion surrounding the recess, wherein the recess has a cylindrical wall and a bottom surface, wherein the raised cylindrical portion having an inner diameter and an outer diameter thereby defining a ridge, wherein the ridge, in operation, is placed close to the flange so that a substantially enclosed area is formed between the cleaning assembly and said lens mold with the lens mold being situated within the substantially enclosed area, wherein the outlet is in fluid communication with the recess for an outflow of gas from the substantially enclosed area, wherein the inlet is in fluid communication with the recess and arranged coaxially with the cylindrical recess for injecting an inflow of compressed gas onto the lens mold to dislodge any debris residing on the lens mold.
2. The cleaning apparatus according to claim 1 wherein said lens mold is carried by a mold carrier, which holds a plurality of lens molds.
3. The cleaning apparatus according to claim 1 , wherein the ridge is equipped with sealing means for pneumatically sealing the lens mold and the cylindrical recess.
4. The cleaning apparatus according to claim 1 wherein said compressed gas is filtered air.
5. The cleaning apparatus according to claim 1 wherein said outflow is provided by a vacuum source.