JPH0451949A - Method and device for working intraocular lens supporting member - Google Patents

Abstract

PURPOSE:To efficiently collect the supporting member at the time of barrel grinding of the supporting member by putting a mixture of the supporting member after deburring is finished and the contents of a barrel into a liquid having the middle specific gravity of both of them and separating it. CONSTITUTION:In a container 2, water of specific gravity 1 is stored. In this case, specific gravity of a supporting member (a) is 0.9 and specific gravity of the contents (b) is larger than '1', therefore, said mixture can be separated the supporting member (a) from the contents (b). Also, by stirring the inside of the container, the separation can be quickened. Water is supplied into the container 2 from a supply port 3 provided on the lower part of the container 2. Moreover, the device is constituted so that overflow water is discharged from a notch 2a. The supporting member (a) floating in the vicinity of the water surface flows to the outside from the notch 2a together with flowing water, is filtered by a funnel 4 and only the supporting member (a) is taken out. A liquid for separating the supporting member (a) and the contents (b) is not limited to water, anything is available if it has the middle specific gravity of the supporting member (a) and the contents (b).

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for processing an intraocular lens support member.

[Prior Art] In recent years, intraocular lenses having an integral support member have become widely used. This support member has a loop shape with a length of about several mm, and both ends are cut off with a razor after being molded. Therefore, it becomes necessary to deburr both ends. In order to improve work efficiency, barrel polishing is generally used for this deburring process.

When the tip of the support member is deburred by barrel polishing, the contents of the barrel are separated from the support member because the support member is longer than the contents of the barrel (the particle size of the contents is 3mm).

The particles could not be separated using the commonly used sieves, and had to be taken out one by one using tweezers or the like.

[Problems to be Solved by the Invention] However, the above-mentioned method using tweezers or the like has the drawback of poor recovery rate and work efficiency.

The present invention was devised in view of the above-mentioned drawbacks, and an object of the present invention is to provide a method and an apparatus for efficiently recovering a support member during barrel polishing of the support member.

[Means for Solving the Problems] The method for processing an intraocular lens support member of the present invention includes a step of deburring the intraocular lens support member using a barrel, and a step of deburring the intraocular lens support member with a barrel, and removing the burr from the support member and the barrel after the deburring process is completed. The method is characterized by comprising the steps of: separating the mixture by placing the mixture with the contents in a liquid having a specific gravity intermediate between the two; and extracting only the support member.

Further, the method is characterized in that the mixture is stirred in the liquid to promote separation.

Further, the liquid is water.

Further, the apparatus for processing an intraocular lens support member of the present invention is a container that contains a liquid having a certain specific gravity, sucks the liquid through a supply port provided in advance, and discharges the liquid through an upper opening. , a mixture of the intraocular lens support member and the contents of the barrel after deburring by the barrel is separated in the liquid by the difference in specific gravity, and only the support member can be discharged together with the liquid from the opening. shall be.

Further, the supply port is provided at the lower part of the container, and the liquid from the supply port stirs the mixture in the lower part of the container to promote separation.

Further, the liquid is water.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

The intraocular lens support member a has a thickness of 0.15 mm.

It has a loop shape with a length of several mm, and is made of polypropylene. This support member a has burrs at both ends when it is formed into a loop shape using a jig and then cut at both ends with a razor.

Barrel polishing is performed to remove this burr. In Figure 1, 1 indicates a barrel, and this barrel 1 has a diameter of 120 mm.
It is a cylindrical container with a diameter of 90 mm at the mouth and has granular contents inside. The contents have a particle size of 1 to 3 mm, and as the barrel 1 rotates, it functions to remove burrs from the mixed support member a.

FIG. 2 is a diagram showing a state in which the mixture of contents and support member a after barrel polishing has been transferred to a container 2 for separation.

Although the structure of the container 2 will be described later, water with a specific gravity of 1 is stored in the container 2.

Here, the specific gravity of the support member a is 0.9 and the specific gravity of the content is 1.
Due to its larger size, the mixture can be separated into support member a and contents. Further, separation can be promoted by stirring the inside of the container.

FIG. 3 is a diagram showing how the support member a is taken out from the container 2. Here, the container 2 has dimensions of 3QQmm in length and width, and 300mm in height, and has an open top surface.A notch 2a is provided at the mouth of the opening to allow water to flow out locally. Water is supplied into the container 2 from a supply port 3 provided at the bottom of the container 2. The overflowing water is then discharged from the notch 2a.

The support member a floating near the water surface flows out from the notch 2a along with the flowing water, and is filtered by the funnel 4 to take out only the support member a.

In addition, since the supply port 3 is located at the lower part of the container 2, water flowing from the supply port 3 stirs the mixture located at the lower part of the container 2, thereby promoting separation of the support member a and the contents. This configuration eliminates the trouble of manually stirring the mixture with a stirring rod or the like.

Next, a modification of this container 2 will be explained.

The container 21 shown in FIG. 4 has a square top opening and rectangular tops on all four sides. The lower part of the side narrows downwards and slopes inwards to the bottom, which is a small square. 31 is a supply port for supplying water; 2
b is a notch for locally draining water. With this configuration, the mixture is concentrated in the center of the lower part of the container 21, so that the efficiency of stirring by the supply port 31 is improved.

The container 22 shown in FIG. 5 has a circular upper opening and a funnel-shaped side surface. 32 is a supply port for supplying water, and 2c is a notch for locally discharging water. With this configuration, like the container 21 in FIG. 4, the mixture is concentrated in the center of the lower part of the container 22, so that the efficiency of stirring by the supply port 32 is improved.

The container 23 shown in FIG. 6 has a square upper opening and four side surfaces. The bottom part is inclined in one direction, and as shown in the figure, a supply port 33 for supplying water is provided at the lowest part of the side surface.

2d is a notch for locally discharging water. With this configuration, the mixture concentrated at the lowest part of the bottom is efficiently stirred.

Also, how to take out the support member a from the container 2 is to use a funnel 4.
Of course, it is also possible to use a net-like object to scoop up the fish instead of using a net.

Further, the liquid for separating the support member a and the contents is not limited to water, but may be any liquid having a specific gravity between that of the support member a and the contents.

Further, in this example, the mixture of the support member a and the contents was transferred to the separation container 2, but the barrel 1 was used as a separation container, water was poured into the barrel 1, and the support member a was transferred to the container 2 for separation. It is also possible to separate the contents.

[Effects] According to the method and apparatus for processing an intraocular lens support member of the present invention, the support member can be efficiently recovered during barrel polishing of the support member.

[Brief explanation of the drawing]

Figures 1 to 3 show a method and apparatus for processing an intraocular lens support member according to an embodiment. Figure 1 shows the state after barrel polishing, and Figure 2 shows the relationship between the support member and the contents. FIG. 3 shows the state in which the mixture has been transferred to the container, and only the support member is taken out from the container. 4 to 6 are front views showing modified examples of the container. 1... Barrel 2... Container 3... Faucet 4... Funnel a... Support member b... Contents patent applicant Nidek Co., Ltd.

Claims (6)

[Claims] (1) Deburring the intraocular lens support member using a barrel; and placing a mixture of the support member and the contents of the barrel after the deburring process into a liquid having a specific gravity intermediate between the two. A method for processing an intraocular lens support member, comprising: a step of separating the support member by a method, and a step of extracting only the support member. (2) The method for processing an intraocular lens support member according to claim (1), characterized in that the mixture is stirred in the liquid to promote separation. (3) Claim (1) characterized in that the liquid is water.
) or (2), the method for processing an intraocular lens support member. (4) An intraocular lens that contains a liquid with a certain specific gravity, sucks the liquid through a pre-provided supply port, and discharges the liquid through an upper opening, the intraocular lens having been deburred using a barrel. A processing device for an intraocular lens support member, characterized in that a mixture of the support member and the contents of the barrel can be separated in the liquid based on a difference in specific gravity, and only the support member can be discharged together with the liquid from the opening. (5) The intraocular lens support according to claim (4), wherein the supply port is provided at a lower part of the container, and the liquid from the supply port stirs the mixture in the lower part of the container to promote separation. Part processing equipment. (6) Claim (4) characterized in that the liquid is water.
) or the apparatus for processing an intraocular lens support member according to (5).