KR101718144B1

KR101718144B1 - Vision inspection device of contact lens

Info

Publication number: KR101718144B1
Application number: KR1020150140554A
Authority: KR
Inventors: 천성철
Original assignee: 뉴바이오 (주); 천성철
Priority date: 2015-10-06
Filing date: 2015-10-06
Publication date: 2017-03-20

Abstract

The present invention relates to a method for manufacturing a contact lens in which a contact lens is defective and a high quality contact lens is produced. The contact lens is mounted on a tray on which a lens to be inspected is placed, (100); The tray loaded on the first tray stacking unit 100 is transferred to a position where the first lens moving unit 200 is provided and the first tray stacking unit 100 and the third tray stacking unit 750 are reciprocated A tray moving part 150 installed as far as possible; First lens moving means 200 installed to be reciprocated along the rail 300 and picking up the lenses to be inspected one by one from the tray moved by the tray moving unit 150 and placing the lenses on the lens inspection table 360 one by one; A photographing means (350) for photographing a lens to be inspected mounted on the lens inspection table (360) and acquiring an image; A control unit 400 for inspecting an image photographed by the photographing unit 350 to determine whether the lens to be inspected and the object to be inspected are to be re-scanned, and to control the operation of the lens inspection apparatus as a whole; A positive lens judged as a good product and a rechecked product lens judged as a good product according to the discrimination result of the controller 400 are moved to respective trays and dropped, Second lens moving means 250 for discharging the defective lens determined to be defective to the closed lens outlet 451 connected to the waste lens hopper 450; A tray support unit 500 that supports the tray on which the positive lens and the recycled product lens are placed, and is installed to reciprocate between the second tray mounting unit 550 and the finished product mounting unit 700; A second tray stacking unit 550 on which empty trays are stacked to provide empty trays to the tray receiving unit 500; A rotation guide piece 600 installed at one side of the second tray stacking part 550 and guided to be dropped by 180 degrees after a lens dropped by the second lens moving device 250 is dropped to a tray ); A finished product loading unit 700 mounted opposite to the second tray loading unit 550 and having a tray filled with the good product lens and the rechecked product lens, respectively; A third tray stacking part 750 installed opposite to the first tray stacking part 100 and on which a tray to be inspected is moved and the empty tray is stacked; .

Description

&Lt; Desc / Clms Page number 1 > Vision inspection device of contact lens &

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact lens vision inspection apparatus, and more particularly, to a contact lens vision inspection apparatus for separately photographing a contact lens placed on a tray and discriminating the photographed image to inspect both parts of the contact lens.

Generally, a contact lens is manufactured by molding with a complete mold method through a contact lens mold including a male mold mold for molding a concave surface and a female mold mold for molding a convex surface.

Wherein the male mold mold is provided with a convex surface which is formed by projecting a lower portion of the male mold mold in an empty state inside and which forms a concave surface of the contact lens, wherein the female mold mold has a concave surface And the female mold mold and the male mold mold are coupled with each other to form a contact lens through the space formed therebetween.

The contact lens is molded in a state where the female mold mold is placed on the mold workbench, the lens mold liquid is injected into the concave face of the female mold mold, the male mold mold is coupled from above, The contact lens is molded through the heat hardening process.

A technique for molding a contact lens using such a mold mold is disclosed in Japanese Patent No. 385447 filed by the present applicant.

On the other hand, the contact lens formed inside the mold is detached from the mold. At this time, an unnecessary portion of the contact lens edge is first cut and then removed.

In this process, however, edge portions of the contact lens, that is, edge portions are not cut smoothly. Therefore, the process of inspecting edge portions of contact lenses is essential when manufacturing contact lenses. State, and so on.

Patent Publication No. 0557906 discloses a conventional contact lens inspection apparatus.

The above-mentioned patent registration No. 0557906 discloses an image pickup apparatus comprising a lens input means, a first lens rotating means for sequentially picking up and rotating the lens to be inspected by 180 degrees, a first pick & Two cameras for picking up an image with respect to a center portion and an edge portion of the lens lying on the rotation index, a pick and place means for inspecting the obtained image, A control means for controlling the operation of the apparatus as a whole, reject means for ejecting a lens judged to be defective according to the control means, A second pick & place means for moving the pick & place means from the second pick & place means, A Y-axis for moving the X-axis in the X-axis and a Y-axis for moving the tray in the Y-axis, And a lens-discharging means configured.

However, the above-mentioned patent is complicated in that the lens is rotated to inspect it. As a result, it is difficult to precisely select a contact lens near the reference range as a result of selection of good and defective products. As a result, There is a problem that the contact lens, which is a good product, is discriminated as a defective product.

Registered Patent Publication No. 10-0557906 (Feb. 27, 2006, Contact Lens Inspection Apparatus) Japanese Patent Application Laid-Open No. 10-2004-0052760 (June 23, 2004, edge inspection apparatus of contact lenses)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a contact lens, And a contact lens vision inspection apparatus which is classified into a product lens and a defective lens.

In addition, the present invention provides a contact lens vision inspection apparatus in which a contact lens is rotated 180 degrees in a process of dropping a contact lens having been subjected to vision inspection by dropping onto a tray by providing a rotation guide piece, so that the concave portion faces upward. .

In order to accomplish the above object, the present invention provides a first tray loading unit (100) in which a tray on which a lens to be inspected is placed and a support part (120) is installed to support a lowermost tray on a lower side; The tray loaded on the first tray stacking unit 100 is transferred to a position where the first lens moving unit 200 is provided and the first tray stacking unit 100 and the third tray stacking unit 750 are reciprocated A tray moving part 150 installed as far as possible; First lens moving means 200 installed to be reciprocated along the rail 300 and picking up the lenses to be inspected one by one from the tray moved by the tray moving unit 150 and placing the lenses on the lens inspection table 360 one by one; A photographing means (350) for photographing a lens to be inspected mounted on the lens inspection table (360) and acquiring an image; A control unit 400 for inspecting an image photographed by the photographing unit 350 to determine whether the lens to be inspected and the object to be inspected are to be re-scanned, and to control the operation of the lens inspection apparatus as a whole; A positive lens judged as a good product and a rechecked product lens judged as a good product according to the discrimination result of the controller 400 are moved to respective trays and dropped, Second lens moving means 250 for discharging the defective lens determined to be defective to the closed lens outlet 451 connected to the waste lens hopper 450; A tray support unit 500 that supports the tray on which the positive lens and the recycled product lens are placed, and is installed to reciprocate between the second tray mounting unit 550 and the finished product mounting unit 700; A second tray stacking unit 550 on which empty trays are stacked to provide empty trays to the tray receiving unit 500; A rotation guide piece 600 installed at one side of the second tray stacking part 550 and guided to be dropped by 180 degrees after a lens dropped by the second lens moving device 250 is dropped to a tray ); A finished product loading unit 700 mounted opposite to the second tray loading unit 550 and having a tray filled with the good product lens and the rechecked product lens, respectively; A third tray stacking part 750 installed opposite to the first tray stacking part 100 and on which a tray to be inspected is moved and the empty tray is stacked; .

According to the contact lens vision inspection apparatus constructed as described above, it is possible to produce a high quality contact lens by comparing the image of the photographed contact lens with the set inspection reference image to classify it into a good lens, a rechecked product lens and a defective lens. Accordingly, it is possible to enhance the reliability of the product to the user and to enhance the competitiveness of the product compared to other products.

In addition, since the contact lens is rotated 180 degrees by placing the rotation guide piece on the tray, the contact lens can be placed on the tray, thereby omitting the reversing process in the packaging process.

1 is a perspective view of a contact lens vision inspection apparatus according to the present invention,
2 is an exploded view showing a first tray loading unit in a contact lens vision inspection apparatus according to the present invention,
3 is a cross-sectional view of the contact lens vision inspection apparatus according to the present invention,
FIG. 4 is a view illustrating a drawing process of a tray loaded in the first tray loading unit according to the present invention;
FIG. 5 is an excerpt showing a tray moving part in the contact lens vision inspection apparatus according to the present invention,
6 is an excerpt showing the first lens moving means and the second lens moving means in the contact lens vision inspection apparatus according to the present invention,
FIG. 7A is a cross-sectional view taken along line AA of FIG. 6,
FIG. 7B is a sectional view taken along line BB of FIG. 6,
FIG. 8 is an excerpt showing the lens inspection table and the photographing means in the contact lens vision inspection apparatus according to the present invention,
FIG. 9 is an exploded view showing a second tray loading unit and a tray receiving unit in the contact lens vision inspection apparatus according to the present invention,
FIG. 10 is a view showing a tray for placing a good-quality lens and a rechecked product lens discriminated by a contact lens vision inspection apparatus according to the present invention, and a waste lens hopper for storing a waste lens;
FIG. 11 is an excerpt of a contact lens vision inspection apparatus according to the present invention showing a first tray mounting part, a tray moving part, and a third tray mounting part in a state where a tray is loaded;
12 is a view showing the second tray loading part, the tray receiving part and the finished article loading part in a state in which the tray is loaded in the contact lens vision inspection device according to the present invention,
13 is a cross-sectional view of the contact lens vision inspection apparatus according to the present invention,
FIG. 14 is a diagram illustrating a loading process of a tray loaded in the finished article loading unit according to the present invention,
15 is a perspective view showing a rotation guide piece in the contact lens vision inspection apparatus according to the present invention,
Fig. 16 is a sectional state view showing a state in which the contact lens is rotated 180 degrees by the rotation guide piece of Fig. 15; Fig.

Hereinafter, a contact lens vision inspection apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in the figure, the contact lens vision inspection apparatus according to an embodiment of the present invention includes a first tray loading unit 100 on which a tray on which a lens to be inspected is placed, a tray moving unit 150, The first lens unit 200, the photographing unit 350, the control unit 400, the second lens moving unit 250, the tray receiving unit 500, the second tray loading unit 550, the rotation guide piece 600, A second tray 700, and a third tray loading unit 750.

The first tray stacking unit 100 is a portion on which a plurality of trays on which a lens to be inspected is placed are stacked, and a support unit 120 is installed on the bottom to support the lowermost tray.

The first tray stacking unit 100 includes a plurality of straight fasteners 110 having a flat cross-section formed in a shape of a letter 'A' so as to surround an edge portion of a tray on which a lens to be tested is placed to uniformly load the tray, And a support portion 120 installed on one side of the machine tool fastener 110 to support the lowermost tray of the stacked tray.

Accordingly, the tray on which the inspection object lens is placed is stacked while being supported by the supporting part 120, and the edge part is bound by the vertical fastener 110, so that the tray is uniformly stacked.

At this time, the length of the vertical coupling piece 110 on the other side is longer than the length of the two vertical coupling pieces on one side of the total of four serial fasteners to facilitate loading of the tray.

The support part 120 may include a support piece 121 for supporting the lowermost tray and a first cylinder 122 for releasing the support state of the tray by moving the support piece 121 backward . At this time, the support piece 121 can be connected to the first cylinder 122 while being connected to the support 123 so that two or more support pieces installed on each side of the tray are moved at a time by the operation of the first cylinder 122 .

The tray moving unit 150 has a configuration in which the lowermost tray among the trays loaded in the first tray loading unit 100 is transferred to a position where the first lens moving means 200 is provided.

In order to support the tray, a tray supporting plate 155 is formed on the upper part of the tray moving part 150 in an area equal to or slightly smaller than the lower surface of the tray so as to support the tray.

Specifically, the tray moving unit 150 is installed at a direction perpendicular to the installation direction of the rail 300, and the tray, which is provided below the first tray loading unit 100 and the third tray loading unit 750, A tray moving body 154 which is reciprocally moved along the tray moving rail 152 and on which the tray supporting plate 155 is formed and a movement controlling means 154 for controlling the movement of the tray moving body 154, (156).

The movement control unit 156 includes a servo motor 156a installed below any one of the first tray stacking unit 100 and the third tray stacking unit 750, An idle roller 156b installed below the other of the third tray stacking part 750 and a belt 156c which is coupled to the servo motor and the idler roller and rotated by the operation of the servo motor, And the tray eastern body 154 is fixed to the belt 156c.

Accordingly, the servomotor is operated to move the tray moving body on the tray moving rail while the belt is rotated.

The tray supported by the tray support plate 155 of the tray body 154 is moved by the movement control means 156 along the tray moving rail 152 to the lens opening 214 of the first lens moving means 200 So as to be positioned on the same line.

The tray moving body 154 may be implemented as a structure in which the tray supporting plate 155 is vertically moved by a cylinder or the like, The tray may be mounted on the tray supporting plate 155 by raising and lowering a separate raising and lowering member on the lower side of the first tray mounting part. The tray may be pulled out from the first tray mounting part, It is possible to do so.

In the present invention, the tray transfer means 800 is provided as a separate raising and lowering member.

Meanwhile, the lens guide plate 160 may be installed on one side of the first tray mounting portion 100.

The lens guide plate 160 is formed with the same number of through holes as the number of lenses placed on the tray. The lens guide plate 160 is configured to prevent lifting of the tray when the lens is moved by the first lens moving means 200.

The first lens moving unit 200 is installed to be reciprocated along the rail 300 and picks up the lenses one by one from the tray moved by the tray moving unit 150 and places them on the lens inspection table 360.

The specific structure of the first lens moving means 200 includes a moving body 210 controlled to reciprocate along the rail 300 by the horizontal movement controlling means 220, And a lens diaphragm 264 mounted on the rod of the second cylinder 212 for sucking and inserting a lens to be inspected through air suction and then placing the lens on the lens inspection table 360 .

That is, while moving back and forth on the rail 300 by the horizontal movement control means, the object lens is picked up from the tray and placed on the lens inspection table 360.

The horizontal movement control means 220 includes a belt 221 connected to the moving body 210 and a servomotor 222 for reciprocating the moving body 210 by forward or reverse rotation of the belt 221. [ .

Accordingly, the moving body 210 can be reciprocally moved by rotating the belt 221 in the forward or reverse direction through the normal / reverse operation of the servo motor 222.

A limit switch (not shown) may be installed at one side of the rail 300 facing the lens inspection table 360 so that the moving body 210 can be accurately moved to the position of the lens inspection table 360 .

The photographing unit 350 is configured to photograph an image of a lens placed on the lens inspection table 360 and to acquire an image. The photographing unit 350 is installed on the upper side of the lens inspection table.

At this time, the lens inspection table 360 is made of a transparent material panel, and a convex lens 370 is installed below the lens inspection table 360.

Therefore, when the lens is photographed by the camera, the lens is enlarged and photographed by the convex lens 370, so that an accurate image can be obtained.

Here, on the upper surface of the lens inspection table 360, lens adjusting means 380 is provided to press the lens placed on the lens inspection table 360 from both sides to adjust the position of the lens.

Since the lens adjusting means 380 can be aligned with the photographing means, it is possible to obtain an accurate image, thereby improving the accuracy of the lens inspection.

The control unit 400 is configured to inspect the image photographed by the photographing unit 350 to discriminate whether the lens is positive or negative, and to control the operation of the lens testing apparatus as a whole. The image information of the lens is set.

Therefore, when the photographed image is compared with the inspection reference image of the set lens, it is judged as a good product when it is within the set range, and when it is out of the range, it is judged as a scrap product. If it is close to the image range, it will be classified as a re-inspection product so that it can be inspected again.

The control unit 400 includes a video output monitor 410 to allow the operator to visually check the video captured by the video capture unit. A reference line for the range of the contact lens serving as an inspection reference is output to the image output monitor 410 together with the photographed image.

It is a matter of course that the inspection reference image for determining the correctness of the lens can be modified by the operator by operating the control unit 400. [

The second lens moving means 250 is provided so as to reciprocate along the rail 300 like the first lens moving means. The second lens moving means 250 is provided with a lens judged to be good, The lens judged to be a defective product is moved to a waste lens outlet 451 connected to the waste lens hopper 450 so as to be stored in the waste lens hopper .

More specifically, the second lens moving means 250 includes a moving body 260 controlled to reciprocate along the rail 300 by the second horizontal movement control means 270, And a lens mounted on the rod of the third cylinder 262 and having been photographed through air sucking, is moved to a corresponding position according to the determination result of the controller 400, (264).

That is, the second lens moving means 250 moves the inspected lens while being reciprocated by the second horizontal movement control means 270 on the tray or discharges the lens to the waste lens hopper 450.

The second horizontal movement controlling means 270 can be configured in the same manner as the horizontal movement controlling means 220 for controlling the movement of the first lens moving means. In other words, the belt 271 and the servomotor 272 are configured to perform the reciprocating motion of the moving body 260.

The tray receiving unit 500 is installed to reciprocate between the second tray loading unit 550 and the finished product loading unit 700 in order to support a tray on which a good product lens and a rechecked product lens are placed.

The tray receiver 500 is provided to be spaced apart from each other in order to support the tray on which the good lens and the recheck lens are placed, and the number of trays corresponding to the number of trays on which the good lens and the recheck lens .

For example, as shown in the accompanying drawings, when there is one tray on which the positive lens is placed, and there is only one tray on which the rechecked product lens is placed, two tray receiving portions 500 are provided.

If there are two trays on which the lens for rechecking product is placed, three of the tray receiving portions 500 are provided.

The tray receiving unit 500 is configured to have the same structure as the tray moving unit 150 and is installed at a direction perpendicular to the installation direction of the rail 300 and includes the second tray loading unit 550 and the finished product loading unit 700 A tray receiving unit moving rail 502 provided below the tray receiving unit moving rail 502 and a tray receiving unit body 504 reciprocating along the tray receiving unit moving rail 502 and having a tray receiving plate 505 formed on an upper surface thereof, And a second movement control means 506 for controlling the movement of the body 504. [

The second movement control means 506 comprises a structure (servo motor, idler roller, belt) that is the same as the structure of the movement control means 156. The second movement control means 506 moves the tray receiving body through the control of the second movement control means .

The second tray stacking unit 550 is configured such that empty trays are stacked to provide empty trays to the respective tray receiving units 500. The second tray stacking unit 550 has the same structure as that of the first tray stacking unit 100 Consists of.

That is, the second tray stacking part 550 includes a plurality of circularly-wound fasteners 560 having a flat cross-section formed to surround the corners of the tray, And a support portion 570 for supporting the lowermost tray of the tray loaded and installed. The support portion 570 includes a support piece 572 for supporting the lowermost tray and a support portion 572 for supporting the lowermost tray And a fourth cylinder 574 for releasing the receiving state of the tray.

At this time, the support piece 572 can be connected to the fourth cylinder while being connected to the support table 576 so that two or more support pieces provided on each side of the tray are moved at a time by the operation of the fourth cylinder.

The operation principle of the support part 570 is the same as the operation principle of the support part 120 of the first tray loading part 100 and will not be described here.

The rotation guide piece 600 is installed on one side of the second tray stacking part 550. The rotation guide piece 600 is moved by the second lens moving device 250 and collides with the upper surface of one side of the lens, And is guided so as to fall down.

The rotation guide piece 600 is formed to have a length corresponding to the length of the tray or longer than the length of the tray, and a hole 610 having the same number as the lens insertion space of the tray is formed on the surface.

Therefore, the lens rotated by 180 degrees against the edge of the entrance hole 610, which is the lens, is pulled through the entrance hole 610, which is the lens, and falls into the tray.

The finished product loading unit 700 is a part installed opposite to the second tray loading unit 550 and loaded with a tray filled with the good product lens and the rechecked product lens.

Specifically, the finished product loading unit 700 includes a plurality of circularly-wound fasteners 710 having a flat cross-section formed to surround the corners of the tray, And a support portion 720 for supporting the lowermost tray of the stacked tray. The support portion 720 includes a support piece 722 having a flat upper surface and an inclined lower surface to support the lowermost tray, And a hinge shaft 724 which hinges the hinge shaft 722 and pivots downward by its own weight.

The reason why the supporting piece is hinged to the hinge shaft so as to be pivoted by its own weight is to load the finished product loading unit 700 only by simply raising the tray from below the finished article loading unit.

As a means for raising the tray to the finished product loading unit 700, the tray receiving unit body 504 may be realized by a structure in which the tray receiving plate 505 is moved up and down by a cylinder or the like, Up and down members may be provided to lift up the tray loaded on the tray receiving plate 505. The tray receiving tray may be configured so that the tray placed on the tray receiving plate of the tray receiving body can be loaded on the finished product loading unit .

The third tray stacking part 750 is a part that is installed facing the first tray stacking part 100 and is loaded in a state that the tray is empty by the movement of the lens to be tested and the structure of the finished stacking part 700 As shown in FIG. In the present invention, the detailed configuration of the third tray stacking unit 750 is the same as that of the finished product stacking unit 700, and therefore, the operation thereof is the same as that of the finished product stacking unit 700 and will not be described.

Here, the lens on the tray loaded on the first tray loading unit 100 is in a convex shape, and the lens on the tray loaded on the finished loading unit 700 is placed in a concave shape.

That is, a lens placed in a convex shape is moved and photographed, and then rotated by 180 degrees by the rotation guide piece 600 to be placed on a tray in a concave shape.

The reason why the lens on the trays mounted on the finished article loading unit is placed in a concave shape is that when it is placed in a convex shape, it is troublesome to turn the article into a concave shape in the packaging process, It is because it is inverted in concave form in the inspection process to judge whether the lens is defective.

On the other hand, on the lower side of the first tray stacking unit 100, the second tray stacking unit 550, the finished product stacking unit 700, and the third tray stacking unit 750, The tray transfer means 800 is installed.

The tray transfer means 800 may be configured such that the trays loaded on the first tray stacking portion 100 and the second tray stacking portion 550 are placed on the upper surface of the tray moving portion 150 and the tray receiving portion 500, The trays mounted on the tray moving unit 150 and the tray receiving unit 500 are lifted to be stacked on the finished product loading unit 700 and the third tray loading unit 750, respectively.

Specifically, the tray transfer means 800 includes a transfer table 810 provided with a support rod 811 protruding upward by a predetermined length so as to support the vicinity of each corner of the tray, And a descending cylinder 820.

Hereinafter, the feeding state of the tray according to the operation of the tray feeding means 800 will be described.

First, a process of placing the trays stacked on the first tray stacking unit 100 and the second tray stacking unit 550 on the tray moving unit 150 and the tray receiving unit 500 will be described.

When the ascending and descending cylinder 820 ascends and the supporting rod 811 supports the lowermost tray loaded on the first tray loading part 100, the first cylinder 122 operates to move the supporting piece 121 backward Descending cylinder 820 is lowered by the interval between the trays, and then the backwardly moved support piece 121 is moved forward to support the second tray from the lowermost side. The lifting cylinder 820 is lowered and the tray supported on the support rod 811 is placed on the tray supporting plate 155 of the tray moving part 150. [

For accurate operation control of the ascending / descending cylinder 820, a detection sensor 830 is separately installed to detect the edges of the stacked trays.

Next, a process of loading the trays mounted on the tray moving unit 150 and the tray receiving unit 500 onto the third tray stacking unit 750 and the finished product stacking unit 700 will be described.

The tray supported by the tray support plate 505 of the tray support unit 500 is lifted while the support bar 811 is being supported by the lifting operation of the lifting cylinder 820 to push the support piece 722, 722. When the support pieces 722 are moved to the upper side of the support pieces 722, the support pieces 722 are rotated by their own weight and are restored to support the tray that has just been raised. Thereafter, the ascending / descending cylinder 820 is lowered to the original position.

The contact lens vision inspection apparatus of the present invention is characterized in that the waste lens hopper 450 is located below the waste lens outlet 451 so that the first tray mounting portion, the tray moving portion, the second tray mounting portion, The finished product loading unit and the third tray loading unit are installed on the upper surface of the support table 900 and the waste lens hopper 450 is installed inside the support table 900.

According to the present invention configured as described above, the presence or absence of defect in the manufactured contact lens is inspected to classify it as a good product, a rechecked product, or a waste product. The apparatus is more accurate and simpler in operation than the conventional inspection apparatus, And the lens which is close to the reference range of the good product and the abandoned product can be classified as the re-inspection product so that the lens can be re-inspected. Thus, the lens which can be classified as the good product or the abolished product is re- This is a very useful invention.

100: first tray loading unit 110:
120: Support part 121: Support piece
122: first cylinder 123: support
150: Tray idle 152: Tray idle scroll rail
154: tray inner body 155: tray support plate
156: movement control means 156a: servo motor
156b: idle roller 156c: belt
160: Lens guide plate
200: first lens moving means 210: moving body
212: second cylinder 214: lens diaphragm
220: horizontal movement control means 221: belt
222: Servo motor 250: Second lens moving means
260: moving body 262: third cylinder
264: lens diaphragm 270: second horizontal movement control means
271: Belt 272: Servo motor
300: rail 350: photographing means
360: lens inspection table 370: convex lens
380: lens adjusting means 400:
410: video output monitor 450: closed lens hopper
451: Closed lens outlet 500:
502: a tray receiving portion moving rail 504: a tray receiving portion body
505: tray base plate 506: second movement control means
550: second tray loading portion 560:
570: Support part 572:
574: fourth cylinder 600: rotation guide
610: entrance hole of lens 700: finished product loading section
710: a direct sequestering piece 720:
722: Support piece 724: Hinge shaft
750: third tray loading part 800: tray feeding means
810: Transfer belt 811:
820: ascending / descending cylinder 830: detection sensor
900: Support table

Claims

A first tray loading part 100 on which a tray on which a lens to be inspected is placed is mounted and a supporting part 120 is installed on the bottom to support the lowermost tray;
The tray loaded on the first tray stacking unit 100 is transferred to a position where the first lens moving unit 200 is provided and the first tray stacking unit 100 and the third tray stacking unit 750 are reciprocated A tray moving part 150 installed as far as possible;
First lens moving means 200 installed to be reciprocated along the rail 300 and picking up the lenses to be inspected one by one from the tray moved by the tray moving unit 150 and placing the lenses on the lens inspection table 360 one by one;
A photographing means (350) for photographing a lens to be inspected mounted on the lens inspection table (360) and acquiring an image;
A control unit 400 for inspecting an image photographed by the photographing unit 350 to determine whether the lens to be inspected and the object to be inspected are to be re-scanned, and to control the operation of the lens inspection apparatus as a whole;
A positive lens judged as a good product and a rechecked product lens judged as a good product according to the discrimination result of the controller 400 are moved to respective trays and dropped, Second lens moving means 250 for discharging the defective lens determined to be defective to the closed lens outlet 451 connected to the waste lens hopper 450;
A tray support unit 500 that supports the tray on which the positive lens and the recycled product lens are placed, and is installed to reciprocate between the second tray mounting unit 550 and the finished product mounting unit 700;
A second tray stacking unit 550 on which empty trays are stacked to provide empty trays to the tray receiving unit 500;
A rotation guide piece 600 installed at one side of the second tray stacking part 550 and guided to be dropped by 180 degrees after a lens dropped by the second lens moving device 250 is dropped to a tray );
A finished product loading unit 700 mounted opposite to the second tray loading unit 550 and having a tray filled with the good product lens and the rechecked product lens, respectively;
A third tray stacking part 750 installed opposite to the first tray stacking part 100 and on which a tray to be inspected is moved and the empty tray is stacked;
Wherein the contact lens vision inspection apparatus comprises:

The method according to claim 1,
The lens on the tray loaded on the first tray mounting part 100 is placed so that the convex part faces upward and the lens on the tray loaded on the finished article mounting part 700 is placed so that the concave part faces upward Characterized by a contact lens vision inspection device.

The method according to claim 1,
The first tray stacking unit 100 includes a plurality of circular-arc fasteners 110 having a flat cross-section formed to surround the corners of a tray on which a lens to be examined is placed, And a support portion 120 installed on one side of the tray to support the lowermost tray of the stacked tray,
The supporting part 120 includes a supporting piece 121 for supporting the lowermost tray and a first cylinder 122 for releasing the supporting state of the tray by moving the supporting piece 121 backward. Lens vision inspection equipment.

The method according to claim 1,
The first lens moving means 200 includes a moving body 210 controlled to reciprocate along the rail 300 by a horizontal movement control means 220 and a second lens moving means 210 installed on one side of the moving body 210, And a lens opening (264) provided in the rod of the second cylinder (212) for inserting a lens to be inspected through air suction and then placing it on a lens inspection table (360) Lens vision inspection equipment.

The method according to claim 1,
The second lens moving means 250 includes a moving body 260 controlled to reciprocate along the rail 300 by a second horizontal movement control means 270 and a second lens moving means 260 installed on one side of the moving body 260 A third cylinder 262 and a lens installed on the rod of the third cylinder 262 for sucking and attaching a lens having been photographed through air suction and then moving to a corresponding position according to the judgment result of the controller 400, (264). &Lt; RTI ID = 0.0 > 26. < / RTI >

The method according to claim 1,
The tray moving unit 150 includes a tray moving rail 152 installed at a direction perpendicular to an installation direction of the rail 300 and below the first tray loading unit 100 and the third tray loading unit 750, A tray moving body 154 which is reciprocated along the tray moving rail 152 and on which a tray supporting plate 155 is formed and a movement controlling means 156 for controlling the movement of the tray moving body 154 Respectively,
The tray receiving part 500 includes a tray receiving part moving rail 502 installed at a direction perpendicular to the installation direction of the rail 300 and provided below the second tray mounting part 550 and the finished product loading part 700, A tray supporting body 504 reciprocating along the tray supporting unit moving rail 502 and formed with a tray supporting plate 505 on an upper surface thereof and a second movement controlling member 504 controlling the movement of the tray supporting body 504, (506). &Lt; Desc / Clms Page number 24 >

The method according to claim 1,
The photographing means 350 is composed of a camera spaced on the upper side of the lens inspection table 360,
A convex lens 370 is provided on the lower side of the lens examination table 360,
Wherein the lens inspection table (360) comprises a transparent panel.

8. The method of claim 7,
Wherein lens adjusting means (380) is provided on the upper surface of the lens inspection table (360) to press the lens placed on the lens inspection table (360) from both sides to adjust the position of the lens.

The method according to claim 1,
The rotation guide piece 600 has a hole 610, which is the same number of lenses as the lens insertion space of the tray,
Wherein the positive lens and the rechecked product lens are rotated by 180 degrees against the edge of the entrance hole 610, which is the lens, and then are drawn through the entrance hole 610, which is a lens, and dropped onto the tray.

The method according to claim 1,
The second tray stacking unit 550 includes a plurality of straight fasteners 560 having a flat cross-section formed in a shape of a letter 'A' so as to surround an edge portion of a tray on which a good product lens and a rechecked product lens are placed, And a support portion 570 provided on one side of the direct-coupled device 560 to support the lowermost tray of the stacked tray,
The support portion 570 includes a support piece 572 for supporting the lowermost tray and a fourth cylinder 574 for releasing the support state of the tray by moving the support piece 572 backward. Lens vision inspection equipment.

The method according to claim 1,
The finished product loading unit 700 and the third tray loading unit 750 include a plurality of seamless fasteners 710 having a flat cross-section formed to surround the corners of the tray, 710) for supporting the lowermost tray of the stacked tray,
The support portion 720 includes a support piece 722 having a flat upper surface and an inclined lower surface so as to support the lowermost tray and a hinge shaft 722 for hinging the support piece 722 to be rotated downward by its own weight 724). &Lt; / RTI >

The method according to claim 1,
Wherein the control unit (400) comprises an image output monitor (410) for displaying an image photographed by the photographing unit (350).

The method according to claim 1,
In order to load the trays drawn or moved on the lower side of the first tray stacking unit 100, the second tray stacking unit 550, the finished product stacking unit 700 and the third tray stacking unit 750 And a tray transfer means (800) are installed on the contact lens.

The method according to claim 1,
Wherein the tray support part (500) is provided in a number corresponding to the number of the trays to support the tray on which the good-quality lens and the rechecked product lens are placed, respectively.