Cup attaching apparatus

Abstract

A cup attaching apparatus for attaching a cup to an eyeglass lens, comprises: a lens mount on which the lens is to be mounted; at least three support pins provided on the lens mount to support the lens when a rear refractive surface of the lens is brought in contact with the support pins; and a first moving mechanism adapted to simultaneously move the support pins to change a distance of each support pin from a central axis for attachment of the cup.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification illustrate an embodiment of the invention and, together with the description, serve to explain the objects, advantages and principles of the invention.

In the drawings,

FIG. 1 is a schematic external view of a cup attaching apparatus of a preferred embodiment of the present invention;

FIGS. 2A and 2B are schematic configuration views of the attaching apparatus;

FIG. 3 is a sectional view showing a schematic configuration of a rotating mechanism for a cup holder and a rotating mechanism for a blocking arm;

FIGS. 4A, 4B, and 4C are views showing changing of orientations of the cup holder;

FIGS. 5A and 5B are sectional views showing a schematic configuration of a modified form of the rotating mechanism for the cup holder and the rotating mechanism for the blocking arm;

FIGS. 6A and 6B are views showing changing of the orientations of the cup holder;

FIG. 7 is a schematic external view of a lens mount;

FIG. 8 is a top view of the lens mount;

FIG. 9 is a partly sectional view taken along a line B-B in FIG. 8;

FIG. 10 is a sectional view taken along a line C-C in FIG. 9;

FIG. 11 is a sectional view taken along a line D-D in FIG. 9;

FIG. 12 is a sectional view taken along a line E-E in FIG. 9;

FIG. 13 is a bottom view of a lens clamp;

FIG. 14 is an enlarged view of a portion F in FIG. 13;

FIGS. 15A and 15B are schematic configuration views of a moving unit for the lens clamp;

FIG. 16 is a schematic configuration diagram of an illumination optical system and a light receiving optical system of the attaching apparatus and a schematic block diagram of a control system of the attaching apparatus;

FIG. 17 is a view showing a setting screen for the orientation of the cup holder;

FIGS. 18A, 18B, and 1C are views showing positions of support pins in a unprocessed lens blocking mode, a processed lens blocking mode, and a shape measuring mode;

FIG. 19 is a diagram showing a measuring screen for a shape of a demo lens; and

FIG. 20 is a view showing a setting screen for positions of holes and others.

Claims

1. A cup attaching apparatus for attaching a cup to an eyeglass lens, comprising: a lens mount on which the lens is to be mounted;at least three support pins provided on the lens mount to support the lens when a rear refractive surface of the lens is brought in contact with the support pins; anda first moving mechanism adapted to simultaneously move the support pins to change a distance of each support pin from a central axis for attachment of the cup.

2. The cup attaching apparatus according to claim 1, wherein the support pins are provided on the lens mount in positions spaced at equal intervals and at equal angles with respect to the attachment central axis, andthe first moving mechanism causes the support pins to move so that the distance of each support pin from the attachment central axis is constantly equal.

3. The cup attaching apparatus according to claim 1, further comprising a mode selector for selecting between a first mode of attaching the cup to an unprocessed lens and a second mode of attaching the cup to a processed lens; wherein, when the second mode is selected, the first moving mechanism causes the support pins to move so that the distance of each support pin from the attachment central axis is shorter than that in the first mode.

4. The cup attaching apparatus according to claim 3, further comprising: a holding unit adapted to hold the support pins so that a supporting plane defined by the support pins is inclineable; anda unit adapted to permit the holding unit to incline when the first mode is selected and inhibit the holding unit from inclining so that the supporting plane is substantially horizontal when the second mode is selected.

5. The cup attaching apparatus according to claim 1, further comprising: a lens table;an imaging unit for capturing an image of the lens mounted on the lens table;an arithmetic part adapted to obtain an outer shape of the lens by performing image-processing on the captured image; anda mode selector for selecting a third mode of obtaining the outer shape of the lens;wherein, when the third mode is selected, the first moving mechanism causes each support pin to move to a standby position outside the lens table.

6. The cup attaching apparatus according to claim 5, wherein the mode selector is arranged to perform selection between a first mode of attaching the cup to an unprocessed lens and a second mode of attaching the cup to a processed lens, andthe first moving mechanism causes each support pin to move to as first support position closer to the attachment central axis than the standby position when the first mode is selected and to a second support position closer to the attachment central axis than the first support position when the second mode is selected.

7. The cup attaching apparatus according to claim 1, further comprising: a lens clamp for clamping the lens in cooperation with the lens mount when the lens is mounted on the lens mount;at least three presser pins provided on the lens clamp to clamp the lens when a front refractive surface of the lens is brought in contact with the presser pins; anda second moving mechanism adapted to simultaneously move the presser pins to change a distance of each presser pin from the attachment central axis.

8. The cup attaching apparatus according to claim 7, wherein the presser pins are provided on the lens clamp in positions spaced at equal intervals and at equal angles with respect to the attachment central axis, andthe second moving mechanism causes the presser pins to move so that the distance of each presser pin from the attachment central axis is constantly equal.

9. The cup attaching apparatus according to claim 1, further comprising: a lens clamp for clamping the lens in cooperation with the lens mount when the lens is mounted on the lens mount;at least three presser pins provided on the lens clamp to clamp the lens when a front refractive surface of the lens is brought in contact with the presser pins; anda third moving mechanism adapted to move the lens clamp in a direction that approaches the lens mount to clamp the lens; anda mode selector for selecting between a first mode of attaching the cup to au unprocessed lens and a second mode of attaching the cup to a processed lens; andwherein the third moving mechanism causes the lens clamp to move to clamp the lens when the first mode is selected and does not cause the lens clamp to move when the second mode is selected.