KR101844505B1 - A quality inspection device for soft lens - Google Patents

Abstract

The present invention relates to a soft contact lens quality inspection device. According to the present invention, a plurality of soft contact lenses to be inspected which are placed on each respective seating groove of a tray to be inspected are moved and photographed. And then, photographed images of the soft contact lenses are discriminated, and only good products except defective products of the soft contact lenses are selected. The soft contact lens quality inspection device comprises: an inspection tray loading portion (100); a first tray transfer portion (200); a lens inspection table (300); a photographing means (400); a control portion (500); a second lens moving means (600); a third lens moving means (700); a water filling means (750); and an inspection completed tray loading portion (800).

Description

Description of the Related Art [0002] A quality inspection device for soft lenses

The present invention relates to a soft lens quality inspection apparatus, and more particularly, to a soft lens quality inspection apparatus which comprises a soft lens for picking up a plurality of inspection target soft lenses placed in respective seating grooves of a tray to be inspected and discriminating the photographed images, And a quality inspection apparatus.

In general, contact lenses are classified into oxygen permeable lenses in addition to hard lenses and soft lenses.

The hard lens is a lens that has been widely used because it has excellent ability to solve astigmatism correction that is difficult to correct as well as general myopia correction.

On the other hand, the lens has a special structure to smooth the upward and downward movement of the lens without friction when worn, smooth the circulation of the eyes, and excel the holding ability of the tears, so that the comfortable feeling can be comforted.

In other words, it is mostly a circular protrusion between the curvature radius portion and the peripheral portion of the inner surface of the lens, and a recessed displacement portion between the circular protrusion portion and the peripheral portion. In this way, the edge portion of the lens has an important It is a part where very precise machining is required as an element.

On the other hand, the edge portion of the contact lens is subjected to a quality inspection at a manufacturing site, the defective product is discarded, and only good products are selected for packaging.

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

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, 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.

Conventionally, a hard lens inspection apparatus including the patent has been partially developed and filed. However, since an inspection apparatus for inspecting a soft lens has not been developed, an operator has directly inspected through a visual inspection process.

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 in order to solve the above problems, and it is an object of the present invention to provide a method and apparatus for photographing a soft lens to be inspected, In order to prevent the occurrence of defective products due to drying by inspecting in a state immersed in water and to inspect all the soft lenses in the same condition by automating inspection of the soft lenses, And a soft lens quality inspection device.

In order to accomplish the above object, the present invention is characterized in that a plurality of first trays (150) having lenses to be inspected are loaded in a plurality of grooves (151) formed in longitudinal and transverse directions, and a lower first tray (100) having a tray receiving means (110) for supporting the tray; A test tray loading unit 800 mounted on the inspection target tray loading unit 100 to load the first tray 150 with the tested good quality lens therein; The first tray is installed to be intermittently operated at a time interval set by the first drive motor 230 between the inspection target tray loading unit 100 and the inspected tray loading unit 800, A first tray transfer unit 200 having a first transfer chain 210 having a plurality of support protrusions 220 for transferring the tray in the direction of the inspected tray loading unit 800 in a state that the tray is passed and supported; A lens provided with a plurality of lens seating grooves 311 to be placed on one side of the first tray transfer part 200 and to be placed on a lens to be inspected transferred from the first tray by the first lens moving means 250, A second conveying chain 320 having a plurality of seating pieces 310 and fixedly arranged on both sides of the plurality of the lens seating pieces 310 and intermittently operated at a predetermined speed for conveying the lens seating pieces, A lens inspection table 300 installed with a lens; A photographing means (400) for photographing a lens to be inspected placed in a lens seating groove (311) of the lens seat (310) and acquiring an image; A control unit (500) for inspecting an image photographed by the photographing unit (400) to determine whether the lens to be inspected is defective, and to control the operation of the inspection device as a whole; Only the lens determined to be good in the controller 500 is selectively taken out from the lens seating groove and is moved in the corresponding groove of the corresponding longitudinal row of the first tray in the empty state conveyed by the first tray conveying unit 200 A second lens moving means (600) The second lens moving means 600 removes and stores the positive lens. The second lens moving means 600 removes the positive lens from the other side of the first tray, A third lens moving means 700 for drawing out and filling the good-quality lens in the second tray 160 containing the lens; And water filling means (750) for filling the lens seating groove (311) on which the lens to be inspected is placed with water.

According to the soft-lens-quality inspection apparatus configured as described above, it is possible to produce a high-quality soft lens by allowing only the good-quality lens to be selected by automatically transferring and photographing the soft lens to be inspected and determining the presence or absence of defects, It can increase the reliability of the product and increase the competitiveness compared to other products.

Particularly, water is supplied to the lens mount groove of the lens inspection table and the soft lens is inspected in a state in which the soft lens is immersed, thereby preventing the occurrence of defective products due to the drying of the soft lens, which may occur in the inspection process.

1 is a perspective view of a soft-lens quality inspection apparatus according to the present invention,
2 is a plan view of a soft lens quality inspection apparatus according to the present invention,
FIG. 3 is an excerpt showing a tray loading unit to be inspected in the apparatus for inspecting the quality of a soft lens according to the present invention,
FIG. 4 is a cross-sectional view illustrating a state where a first tray is loaded on a tray mounting portion to be inspected in the apparatus for inspecting a soft lens quality according to the present invention,
FIG. 5 is a view illustrating a drawing process of the first tray loaded in the tray loading unit according to the present invention,
FIG. 6 is an excerpt showing a first tray transmission unit in a soft lens quality inspection apparatus according to the present invention,
7 is an excerpt showing a lens inspection table in the apparatus for inspecting the quality of a soft lens according to the present invention,
8 is an excerpt showing the photographing means in the apparatus for inspecting the quality of a soft lens according to the present invention,
9 is an excerpt showing water filling means in the apparatus for inspecting the quality of a soft lens according to the present invention,
10 is an excerpt showing the inspected tray loading unit in the apparatus for inspecting the quality of a soft lens according to the present invention,
11 is a cross-sectional view of a state in which a first tray is loaded on a tested tray loading unit according to the present invention;
FIG. 12 is a diagram illustrating a loading process of the first tray loaded on the inspected tray loading unit according to the present invention,
FIG. 13 is a sectional view taken along the line AA of FIG. 2,
14 is a view showing a state in which a defective lens collecting means is installed on a lens inspection table according to the present invention,
FIG. 15 is a view showing a state in which the cleaning means is installed on the lower side of the lens inspection table according to the present invention,
16 is a cross-sectional view of a state in which a second photographing means, a water removing means, and a water supplying means are installed on an upper portion of a first tray conveying portion according to the present invention,
17 is an exploded view showing a second tray transfer part and a second tray loading part for collection and a second tray loading part for collection according to the present invention,
18 is a sectional view of a second tray loading section for supplying according to the present invention,
19 is a sectional view of a second tray loading portion for collection according to the present invention,
20 is an excerpt showing a lens pickup configuration in a soft lens quality inspection apparatus according to the present invention,
21 is an exploded view of Fig. 21,
22 is a state diagram showing a pickup process of the soft lens according to the present invention,
23 is a state diagram showing a drop-off process of the soft lens according to the present invention,
24 is a configuration diagram showing a control state of the control unit in the apparatus for checking the quality of a soft lens according to the present invention.

Hereinafter, a soft lens quality 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 apparatus for inspecting the quality of a soft lens according to an embodiment of the present invention includes a test target tray loading unit 100 on which a first tray containing a lens to be inspected is loaded, a first tray transfer unit 200, The inspection unit 300, the photographing unit 400, the control unit 500, the second lens moving unit 600, the third lens moving unit 700, the water filling unit 750, and the inspection tray loading unit 800 .

The first tray 150 includes a plurality of grooves 151 longitudinally and laterally formed therein. The first tray 150 has a plurality of grooves 151 formed in the longitudinal direction of the first tray 150, .

Of course, the second tray 160, which will be described later, is also formed in the same structure as the first tray 150.

The inspection target tray loading unit 100 is provided with a tray receiving means 110 for receiving and supporting the lowermost first tray to support the loaded first tray.

The tray supporting means 110 is configured to support the first tray dropped from the inspection target tray loading unit 100 and moves to the first tray transferring unit 200 while supporting the first tray.

The first tray transfer unit 200 is installed between the inspection target tray loading unit 100 and the inspected tray loading unit 800 and transfers the first tray loaded on the inspection target tray loading unit 100 to the inspection tray And is moved to the loading unit 800.

The first tray transfer unit 200 includes a first transfer chain 210 for transferring the first tray to a position where the inspection tray loading unit 800 is installed while being intermittently operated at a predetermined time interval by the first driving motor 230 And a plurality of support protrusions 220 are formed on the first conveyance chain 210 to support the first tray passed from the tray support means 110.

The support protrusions 220 may be provided to support the bottom edge of the first tray 150.

The lens to be inspected contained in each groove of each row of the first tray is transferred to the lens inspection table 300 in the process of being transferred by the first tray transfer unit 200. After that, Is contained in each groove of each row of the first tray which is empty.

The lens inspection table 300 is arranged at a predetermined distance on one side of the first tray transfer part 200 and is spaced apart from the first tray transfer part 200 by a predetermined distance. A plurality of lens seating pieces 310 having a plurality of lens seating grooves 311 formed therein are arranged so as to be spaced apart from each other at a predetermined speed for transferring the lens seating pieces 310, ) Is installed.

That is, the plurality of lens seating pieces 310 arranged at regular intervals are moved in one direction by the operation of the second conveying chain 320 while both sides are fixed to the second conveying chain 320, And is formed in an endless track shape as shown in the drawing.

The photographing means 400 is configured to photograph an image of a subject lens placed in a lens seating groove 311 of the lens seat piece 310 and acquire an image. The photographing means 400 includes a camera 401 and a convex lens 402, .

The control unit 500 receives the image photographed by the photographing unit 400, examines the image to determine whether the lens to be inspected is defective or not, .

When the defective-lens collecting means 650, which will be described later, is installed, the controller 500 can determine that the lens is defective and divide the lens into three types, A class, B class and C class. Of the remaining lenses, only Class B can be collected separately and used for reuse or inexpensive supply.

Of course, the defective-lens collecting means 650 can be installed even if the control unit 500 judges only two good products and two defective products. In this case, all of the defective lenses remaining after the good products are sorted may be collected .

The second lens moving means 600 moves only the lens judged to be good in the controller 500 from the lens seating groove to be moved in the corresponding groove of the corresponding longitudinal row of the empty first tray.

That is, in order to check whether there is a defect, the lens to be inspected contained in the groove of the first tray 150 is moved to the lens seating groove 311 of the lens seat piece 310. After inspection, And then transferred to the tray 150 again.

At this time, the movement of the lens to be inspected and the movement of the good lens are not performed in the same first tray, but all of the lenses to be inspected are first moved from the first tray, and the empty lenses And transfer the good lens back to the first tray.

The defective lens remaining in the lens seating groove of the lens seating piece 310 after the good lens is moved is moved by the second carrying chain 320 while being directed downward while the lens seating piece is being conveyed. So that it is naturally removed from the lens seat.

It is preferable that the reject lens and the water dropped in the lens seating groove are collected in separate collection hoppers.

On the other hand, if necessary, the defective lens collecting means 650 may be provided on the lens inspection table 300, in addition to the method of removing the defective lens by natural dropping.

The defective lens collecting means 650 is configured to remove the lens judged to be defective by the control unit 500 from the lens seating groove. For example, as shown in FIG. 14, the defective lens collecting means 650 can collect the defective lens have.

The third lens moving means 700 moves the lens discriminated as a good product through the inspection to the first tray 150. Since all the lenses are not transferred and stored in the first tray 150, And the second lens 160, in which a good-quality lens is previously contained in the groove, is moved to fill the empty groove.

For example, in the case where six grooves are formed in each row of the first tray and six lens seating grooves 311 are formed in the lens seating grooves 310 of the lens inspection table, they are seated in the lens seating grooves 311 When the lens placed in the first, second, and third lens seating grooves is discriminated as a good lens, only the lens is moved to the first groove, the second groove, and the third groove of the first tray 150, The good lens contained in the fourth groove, the fifth groove and the sixth groove of the second tray 160 is moved to the third lens moving means 700 to fill the vacant fourth groove, fifth groove and sixth groove of the first tray 150 .

The first tray 150, which contains all of the positive lenses, is conveyed by the first conveying chain 210, and is conveyed to the inspection tray loading (800).

The water filling means 750 is configured to fill each of the lens seating grooves 311 of the lens seating piece 310 with water so as to maintain the moisture of the lens to be inspected moved from the first tray 150 So that damage to the lens, which may occur during the inspection, can be prevented.

The water filling means 750 includes a water supply pipe 751 which is raised and lowered by a cylinder at an upper portion of the lens seat piece 310 and connected to a water tank by a hose, A nozzle 752 installed to supply water to each of the grooves 311 and a control valve installed on the water tank outlet or hose to control the supply of water through the nozzle.

At this time, the water filling unit 750 fills approximately half of the lens-seating groove before moving the lens to be inspected to the first tray 150, moves the lens to be inspected in the first tray 150, And the water is filled up to the position set in the lens mount groove.

The reason for doing this is that if the water is filled before moving the lens to be inspected, there is a problem (such as when the lens to be inspected does not sink into the water and floats on the water) So as to prevent breakage or damage of the soft lens.

It is preferable that the number of lens seating grooves 311 formed in the lens seat 310 and the number of grooves of the first tray 150 and the second tray 160 are the same.

This is to prevent the operation of the device as well as the errors that may occur.

The apparatus for inspecting the quality of a soft lens of the present invention configured as described above automatically inspects the presence or absence of defects in a soft lens, thereby eliminating inconvenience and inaccurate selection due to manual inspection by an operator using a tweezers or the like. The inspection is performed in the same condition as the inspection standard for selection of the good-quality lens, so that the reliability can be enhanced and precise inspection can be performed.

3 and 4, the inspection target tray loading unit 100 of the present invention includes a flat tray (not shown) installed to surround a corner of a first tray 150 containing a lens to be inspected, A plurality of first direct coupling loops 101 formed in the shape of a letter "A" and a first supporting piece 101 for supporting the lowermost tray of the first tray mounted on one side of the first direct- (102), and a first cylinder (103) for moving the first support piece (102) backward to release the support state of the first tray.

Therefore, the first tray 150 containing the lens to be inspected is stacked while being supported by the first supporting piece 102, and the corner portion is bound by the first horizontal fastener 101, And the like.

At this time, the length of the first vertical fastening piece 101 is shorter than the length of the two vertical binding pieces provided on the other side of the four vertical fastening pieces, do.

The first cylinder 103 is installed on the outer surface of the support letter zone 104 coupled to the first horizontal fastener 101 and the first support member 102 is disposed on the outer surface of the support letter zone 104 And is projected to the inside of the support letter zone 104 by the operation of the first cylinder.

The tray receiving means 110 has a function of passing the first tray on the lowermost side of the first trays loaded on the inspection target tray loading unit 100 and guiding the first tray to be supported by the support protrusions 220 .

A pedestal 111 in which a support rod 112 is provided so as to protrude upward by a predetermined length so as to support the vicinity of each corner of the first tray so as to support the first tray and a pedestal cylinder 113).

A process of placing the first tray loaded on the inspection target tray loading unit 100 on the support protrusion 220 according to the operation of the tray receiving means 110 will be described.

First, when the pedestal cylinder 113 rises and the support rod 112 supports the lowermost first tray loaded on the inspection target tray loading unit 100, the first cylinder 103 operates, The support tray 102 is moved backward to release the support state of the lowermost first tray. After that, the support cylinder 113 is lowered by the interval of stacking the trays, and then the backward movement of the first support piece 102 is advanced The support tray cylinder 113 is moved downward to move the tray supported on the roof 112 downward so that the first tray 210 provided in the first conveyance chain 210 And is supported by the support protrusions 220.

At this time, in order to precisely control the operation of the pedestal cylinder 113, a detection sensor 114 is separately installed to detect edges of the plurality of stacked first trays.

In the present invention, the tray receiving means 110 includes a tray loading unit 100, a checked tray loading unit 800, a second tray loading unit 900, and a second tray loading unit 950, and the operation principle thereof is the same.

Of course, the inspection tray loading unit 800 and the collection tray second loading unit 950 are not provided with the same structure as the tray receiving means 100, but have a support plate sized to support the tray at the rod end Cylinders can also be installed.

This is because, as described later, the tray can be stacked on the inspection completed tray stacking unit 800 and the collection tray second stacking unit 950 only by raising the tray upward.

The photographing means 400 may include a camera 401 disposed on the upper side of the lens seating piece 310 and a convex lens disposed below the lens seating piece 310 corresponding to the camera 401. [ The camera 401 and the convex lens 402 may be provided with the imaging means support 410 in a shape of a substantially '⊂' shape in side view.

Here, a plurality of cameras and a convex lens are provided on the photographing means supporting stand 410 so as to photograph a lens to be inspected which is seated in all the lens seating grooves 311 at one time, or only one camera and a convex lens It can be photographed.

In the case of photographing with only one camera and a convex lens, it is preferable that the photographing means supporter 410 is provided so as to be moved in the longitudinal direction of the lens seat fixture 310 by the photographing means cylinder 420, 310 and sequentially move from the first lens mount groove formed in the second lens mount groove 310 to the last lens mount groove.

The lens mount piece 310 is composed of a transparent panel for precisely photographing the lens to be inspected.

14, the reject lens collecting means 650 includes a suction pump 651 spaced apart from the lens inspection table 300, a lens mount 651 connected to the suction pump 651, A collecting hopper 653 for storing a rejected lens sucked through the suction pipe 652 and a suction pipe 652 for connecting the suction pipe 652 to the lens seating piece 310 And a suction pipe cylinder 654 for moving the suction pipe cylinder 654 downward.

Therefore, when the defective-lens lens is collected, the suction tube 652 is operated to move the suction tube 652 downward to move the suction pump 651 to a position close to or close to the upper surface of the lens seat piece 310 The defective lens is taken in together with the water.

Here, even if the water or defective lens is not picked up by the defective lens collecting means, since the lens inspection table 300 is made in the endless track system, it falls down to its own weight naturally by its weight during rotation and is removed from the lens seating groove.

A cleaning means 350 equipped with a cleaning nozzle 351 is installed at a lower side of the lens inspection table 300 to spray cleaning water into the lens mounting groove 311 from which both the good and defective lenses are drawn .

The reason for providing the cleaning means 350 is to increase the accuracy of inspection by removing foreign substances or the like which are generated in the inspection process or attached to the surface of the lens seating groove and that the collection of defective lenses placed in the lens seating groove This is to ensure that the defective lens is removed even if it is not properly done.

On the upper side of the first tray transfer unit 200, a second photographing unit 450 may be installed to photograph the first tray 150 on which the lens to be inspected has been moved by the first lens moving unit 250 And the photographed image is transmitted to the control unit 500.

The second photographing means 450 is composed of a camera installed on the upper side of the first tray transfer unit 200 via a support.

The control unit 500 reads the image transmitted from the second photographing unit 450 to check whether the lens to be inspected exists in the first tray 150. [ If there is a lens to be inspected on the first tray, an alarm is sounded and the drive of the quality inspection apparatus of the present invention is suspended.

On the other hand, on the rear side of the second photographing unit, a water removing unit 760 may be installed to remove the water filled in the groove of the first tray 150 conveyed by the first conveying chain.

The water filled in the grooves of the first tray 150 is not required to be removed, but it is preferable to remove foreign substances generated during the inspection because the foreign substances may be drawn in. After removal, it is recommended to replace with clean water.

The water removing means 760 may have the same structure as the reject lens collecting means 650.

After the filled water is removed, the water supply means 770 is installed on the rear side of the water removing means 760 in order to fill the respective openings of the corresponding rows of the first tray with clean water.

The water supply means 770 may have the same structure as that of the water filling means. The water supply means 770 may be filled with a certain amount of water before being transferred, such as the water filling means 750, .

As shown in FIGS. 10 and 11, the inspecting tray loading unit 800 includes a first tray 150 and a second tray 150. The first tray 150 has a flat cross-section so as to surround the first tray 150, A first supporting case 802 installed on one side of the inspecting tray water straightening fastener 801 and a first supporting case 802 attached to the first supporting case 802, And a first support member 803 which is vertically rotatably mounted on the first tray 804 and supports the lowermost first tray, the first support member 803 having a flat upper surface and an inclined lower surface.

The reason why the first support member 803 is hinged to the first hinge shaft 804 and pivoted by its own weight is that the inspected tray loading unit 800 is loaded with the inspected first tray, The first tray lifting up to the lowermost side of the stacked first tray by simply raising the first tray from below the tray stacking unit can be stacked so that the first tray 803 can be artificially rotated upward .

In the present invention, the second tray 160 for replenishing the good-quality lens to the first tray 150 is provided to replenish the good-quality lens while being transported at the same speed or different speed as the first tray.

A second tray transfer part 850 is formed on the other side of the first tray transfer part 200 so as to be aligned with the first tray transfer part 200 in order to transfer the second tray in a supported state.

The second tray transfer part 850 may have the same shape as the first tray transfer part 200 or may be formed as shown in FIG.

17, a second tray moving body 851 having a tray supporting plate 952 for supporting the second tray 160 is installed on the upper portion of the second tray moving body 851, 851 and rotated by the servo motor 854 in the forward and reverse directions to move the second tray moving body 851 between the second tray loading section 900 for feeding and the second tray loading section 950 for collection And a movement guide rail 855 for guiding the movement of the second tray moving body 851. The movement of the second tray moving body 851 may be controlled by a moving mechanism.

As the belt 853 is rotated by the operation of the servomotor 854 as described above, the second tray 160 is moved to the installation position of the second tray loading unit 950 for collection .

At the lower portion of the second tray loading unit 900 for receiving and the second tray loading unit 950 for collection, a second tray moving body 851 is provided at the second tray loading unit 900 for feeding, The tray receiving means 110 is installed as described above in order to drop the tray 2 from the second tray moving body 851 and to lift the tray from the second tray loading section 950 for collection.

Here, the second tray loading unit 900 and the second tray loading unit 950 may be installed on the upper and the other sides of the second tray transfer unit 850, respectively.

As shown in FIGS. 17 and 18, the second tray loading unit 900 includes a plurality of second trays 210 having a flat cross-section so as to surround corners of the second tray 160, A second support piece 902 for supporting the lowermost second tray among the second trays mounted on one side of the second seamless transit 901, And a second cylinder 903 for moving the second tray 902 backward to release the receiving state of the second tray.

The operating principle of the second tray loading unit 900 is the same as that of the tray loading unit 100 to be inspected.

17 and 19, the second tray loading and unloading part 950 includes a flat section, which is installed so as to enclose a corner portion of the second tray for collection 160, A second support case 952 provided at one side of the collection tray water direct-connection sequential 951 and a second support case 952 attached to the second support case 952, And a second support portion 953 which is vertically pivotally mounted on the shaft 954 and has a flat upper surface and an inclined lower surface to support the lowermost second tray.

The operation principle of the second tray loading unit for collection 950 is the same as the operation principle of the checked tray loading unit 800.

The first lens moving means 250, the second lens moving means 600 and the third lens moving means 700 for moving the lens in the present invention include a moving body 252, A first block 254, a second block 255, a third block 257, a lens pickup bar 258 and a drop-off pin 259.

The first block 254 is installed on one side of the moving body 252. The first block 254 is installed on one side of the moving body 252, And is vertically moved by a plurality of ascending / descending cylinders 253.

At this time, a first base 254a protrudes from the lower portion of the first block 254.

The second block 255 is installed on one side of the first block 254 so as to be freely moved up and down. The second block 255 is supported on the first base 254a by its own weight, And the fixing piece 255a and the second base plate 255b are formed to be protruded.

The third block 257 is vertically installed on one side of the second block 255 and is vertically moved by the second ascending / descending cylinder 256. Vertical through holes 257a are formed in the central portion along the longitudinal direction do.

The lens pick-up rods 258 are configured to pick up a lens, and are formed so as to be convex so that a lens is attached to the lower end thereof.

The lower end of the lens pickup rod 258 is formed to have a diameter larger than the diameter of the lens, and the projected curved angle is formed to be more gentle than the bending angle of the lens, and the lens pickup rod 258 is pressed The lens is unfolded while adhering to the end of the lens pickup bar 258, and is attached thereto by pressure.

A hook 258a is formed at the upper end of the lens pick-up bar 258 so as to be engaged with the vertical through hole 257a of the third block 257, and a pin through hole 258b Is formed.

The drop-off pin 259 is fitted into the pin through-hole 258b in a state where an upper end is coupled to the bottom surface of the fixing piece 255a. In a state in which the lens is attached to the lower end of the lens- When the third block 257 is moved up by the second ascending / descending cylinder 256, the lens attached to the lens pick-up rods 258 protrudes through the lower portion of the lens pick-up rods 258, .

[0040] The process of transferring the soft lens using the lens transfer means (the first lens transfer means, the second lens transfer means, and the third lens transfer means)

After the moving body is positioned on the tray containing the soft lens, the lifting cylinder 253 is operated to move the first block 254 downward so that the lens pickup rod 258 touches the soft lens .

When the lens pickup bar 258 touches the soft lens, the second block 255 rises upward with respect to the first block 254 by the pressure.

At this time, even if the rod of the lifting cylinder 253 is further pulled downward while the lens pickup rod 258 is in contact with the soft lens, the load of the second block including the lens barrel pick-up rod, the drop- As the lens is pressed and picked up, damage to the soft lens can be prevented in the course of pressing and picking up the soft lens.

When the user wishes to remove the soft lens after picking up, the second lift cylinder 256 is operated to move the third block 257 upward, so that the drop-off pin 259 coupled to the fixed piece is drawn out to the end of the lens pickup rod The soft lens which is picked up on the lens pickup rod is pushed out and the soft lens is removed from the lens pickup rod.

In this case, an elastic force is applied to the space between the fixing piece 255a and the lens pick-up bar 258 in a state of passing through the drop-off pin 259, (260) may be installed.

The reason why the elastic spring 260 is provided is that when the lens pick-up rods 258 are raised by the rise of the third block 257, the lens pick-up rods are prevented from moving in the upward direction of the third block, This is to prevent the soft lens from being pushed upward even though it is not picked up during pickup.

According to the soft lens quality inspecting apparatus of the present invention constructed as described above, it is possible to inspect a larger number of soft lenses by automating the inspection of the presence or absence of defects of the soft lens, It is possible to perform uniform and accurate screening compared to the manual inspection performed by other operators, and more precise inspection can be performed.

In addition, it is possible to prevent scratches, tearing, and the like, which may occur during transfer of the soft lens for inspection, so that the quality can be inspected without affecting the soft lens.

100: inspection subject tray loading unit 101: first direct connection sequential
102: first supporting piece 103: first cylinder
110: tray supporting means 111: pedestal
112: support rod 113: pedestal cylinder
114: Detection sensor 150: 1st tray
151: groove 160: second tray
200: first tray transfer unit 210: first transfer chain
220: support protrusion 230: first drive motor
250: first lens feeding means 251: driving means
252: moving body 253: ascending / descending cylinder
254: first block 254a: first base jaw
255: second block 255a:
255b: second base jaw 256: second up and down cylinder
257: Third block 257a: Vertical through hole
258: Lens pick-up rods 258a:
258b: pin through hole 259: drop-off pin
260: Elastic spring
300: lens inspection table 310: lens seat
311: Lens seat groove 320: Second conveyance chain
330: second drive motor
350: Cleaning means 351: Cleaning nozzle
400: photographing means 401: camera
402: convex lens 410: imaging means support
420: photographing means cylinder
450: second photographing means
500:
600: second lens moving means
650: defective lens collection means 651: suction pump
652: suction pipe 653: collection hopper
654: suction pipe cylinder 700: third lens moving means
750: water filling means 751: water supply pipe
752: Nozzles
760: Water removal means 770: Water supply means
800: Completed inspection tray loading part 801: Completed inspection tray direct sequencing
802: first supporting case 803: first supporting member
804: first hinge shaft
850: second tray transfer part 851: second tray transfer body
852: tray supporting plate 853: belt
854: Servo motor 855: Movement guide rail
900: second tray loading portion for supply 901:
902: second supporting piece 903: second cylinder
950: Second tray loading part for collection 951: Collection tray direct sequencing
952: second supporting case 953: second supporting member
954: second hinge shaft

Claims (15)

A plurality of first trays 150 containing a lens to be inspected are mounted on a plurality of grooves 151 formed in longitudinal and transverse directions and a tray receiving means 110 for receiving and supporting the lowermost first tray at the bottom, A loading section 100;
A test tray loading unit 800 mounted on the inspection target tray loading unit 100 to load the first tray 150 with the tested good quality lens therein;
The first tray is installed to be intermittently operated at a time interval set by the first drive motor 230 between the inspection target tray loading unit 100 and the inspected tray loading unit 800, A first tray transfer unit 200 having a first transfer chain 210 having a plurality of support protrusions 220 for transferring the tray in the direction of the inspected tray loading unit 800 in a state that the tray is passed and supported;
A lens provided with a plurality of lens seating grooves 311 to be placed on one side of the first tray transfer part 200 and to be placed on a lens to be inspected transferred from the first tray by the first lens moving means 250, A second conveying chain 320 having a plurality of seating pieces 310 and fixedly arranged on both sides of the plurality of the lens seating pieces 310 and intermittently operated at a predetermined speed for conveying the lens seating pieces, A lens inspection table 300 installed with a lens;
A photographing means (400) for photographing a lens to be inspected placed in a lens seating groove (311) of the lens seat (310) and acquiring an image;
A control unit (500) for inspecting an image photographed by the photographing unit (400) to determine whether the lens to be inspected is defective, and to control the operation of the inspection device as a whole;
Only the lens determined to be good in the controller 500 is selectively taken out from the lens seating groove and is moved in the corresponding groove of the corresponding longitudinal row of the first tray in the empty state conveyed by the first tray conveying unit 200 A second lens moving means (600)
The second lens moving means 600 removes and stores the positive lens. The second lens moving means 600 removes the positive lens from the other side of the first tray, A third lens moving means 700 for drawing out and filling the good-quality lens in the second tray 160 containing the lens;
A water filling means (750) for filling the lens seating groove (311) on which the lens to be inspected is placed, with water;
And a controller for controlling the quality of the soft lens.
The method according to claim 1,
Wherein the number of the lens seating grooves (311) is equal to the number of grooves of the first tray (150) and the second tray (160).
The method according to claim 1,
The inspection target tray stacking unit 100 includes a plurality of first seamless fasteners 101 having a flat cross-section formed to surround a corner of a first tray 150 containing a lens to be inspected, A first support piece 102 installed on one side of the first direct-coupled fastener 101 and supporting the lowermost tray of the first tray stacked thereon; And a first cylinder (103) for releasing the supporting state of the soft lens.
The method according to claim 1,
The inspecting tray loading unit 800 includes a plurality of inspecting tray detachable fasteners 801 having a flat cross-section formed to surround the corners of the first tray 150 containing the inspected good quality lenses, A first support case 802 installed at one side of the inspecting tray water straightening fastener 801 and a second support case 802 installed to the first support case 802 so as to be vertically rotated by a first hinge shaft 804, And a first support member (803) having a flat upper surface and an inclined lower surface to support the first tray.
The method according to claim 1,
The lens mount piece 310 is composed of a transparent panel,
The photographing means 400 includes a camera 401 disposed on the upper side of the lens seating piece 310 and a convex lens 402 disposed below the lens seating piece 310 corresponding to the camera 401. [ And a controller for controlling the quality of the soft lens.
The method according to claim 1,
The defective lens collecting means 650 is installed in the lens inspection table 300 for collecting all or a selected defective lens remaining in the lens seating groove after the defective lens is drawn by the second lens moving means 600 Wherein the soft lens quality inspection apparatus comprises:
The method according to claim 6,
The control unit 500 divides the inspection object lens into two good parts and defective parts when judging the defect of the lens to be inspected, or divides it into three class A, which is a good grade A, a middle grade B grade that can be recycled,
When the control unit 500 divides the defective-lens collecting unit 650 into two good parts and two defective parts, the defective-lens collecting unit 650 collects all of the defective lenses. If the three parts of the A-class, B-class, and C- Wherein the soft lens quality inspection apparatus comprises:
8. The method of claim 7,
The defective lens collecting means 650 includes a suction pump 651 spaced apart from the lens inspection table 300 and a suction pipe 651 connected to the suction pump 651 to suck the defective lens contained in the lens seating groove 311. [ A collection hopper 653 for storing a defective lens sucked through the suction pipe 652 and a suction pipe cylinder 654 for moving the suction pipe 652 downward to the upper surface of the lens seating piece 310, And a controller for controlling the quality of the soft lens.
The method according to claim 1,
Wherein a cleaning means (350) provided with a cleaning nozzle (351) is provided at a lower side of the lens inspection table (300) to spray cleaning water to a plurality of lens mounting grooves (311).
The method according to claim 1,
The first tray 150, on which the lens to be inspected has been moved by the first lens moving unit 250, is photographed on the first tray transfer unit 200, and the presence or absence of the lens to be examined is checked And a second photographing means (450) is provided for photographing the second lens group.
11. The method of claim 10,
A water removing means 760 is provided on the rear side of the second photographing means 450 to remove water present in each groove of the corresponding row of the first tray 150,
And a water supply means 770 for supplying clean water to each groove of the corresponding row of the first tray 150 from which water is removed is provided on the rear side of the water removing means 760.
The method according to claim 1,
A second tray transfer part 850 is formed on the other side of the first tray transfer part 200 so as to be aligned with the first tray transfer part 200. A second tray transfer part 850 is provided on the upper side and the other side of the second tray transfer part 850, A second tray loading section 900 for collection and a second tray loading section 950 for collection are installed,
The second tray loading unit 900 includes a second plurality of second seamless pieces 901 having a flat cross-section so as to surround the edge of the second tray 160, A second support piece 902 which is installed on one side of the second rotation unit 901 to support the lowermost second tray of the second tray 902 and the second support piece 902 is moved backward, And a second cylinder 903 for releasing the receiving state of the second cylinder 903,
The second tray loading part 950 for collection includes a plurality of collection tray trays 911a and 911b having a flat cross-section formed in a shape of a letter 'A' so as to surround the corners of the second tray 160 for collection, A second support case 952 installed on one side of the collection tray water-stopping fastener piece 951 and a second support case 952 provided on the second support case 952 so as to be vertically rotated by a second hinge shaft 954, And a second support portion (953) having a flat upper surface and a lower inclined surface to support the second tray.
13. The method of claim 12,
The second tray transfer unit 850 includes a second tray transfer body 851 having a tray support plate 952 for supporting the second tray 160 thereon and a second tray transfer body 852 for supporting the second tray transfer body 851 And is rotated in the forward and reverse directions by the servo motor 954 so that the second tray moving body 851 is reciprocated between the second tray loading section for feeding 900 and the second tray loading section for collection 950 And a movement guide rail (855) for guiding movement of the second tray moving body (851).

The method according to claim 1,
The first lens moving means 250, the second lens moving means 600 and the third lens moving means 700 are mounted on a moving body (not shown) which is guided by the rail and driven to reciprocate by driving of the driving means 251 252,
A first block 254 which is vertically moved by a plurality of ascending and descending cylinders 253 provided at one side of the moving body 252 and a first supporting step 254a is protruded from the lower side,
The first block 254 is vertically movably installed on one side of the first block 254 and is supported by the first base 254a by its own weight. The fixing block 255a and the second base block 255b , A second block 255 formed with the first,
A third block 257 which is vertically moved by the second ascending / descending cylinder 256 at one side of the second block 255 and has a vertical through-hole 257a formed at the center thereof,
A locking protrusion 258a is formed at the upper end to be engaged with the vertical through-hole 257a of the third block 257, a pin through-hole 258b is formed in the vertical direction at the center, and a lower end is convex A lens pickup rod 258 to which a lens is attached,
When the third block 257 is moved upward by the second ascending / descending cylinder 256 while being engaged with the pin through hole 258b with the upper end coupled to the bottom surface of the fixing piece 255a, And a drop-off pin (259) protruding through a lower portion of the pickup bar (258) and dropping off a lens attached to the lens pickup bar (258).
15. The method of claim 14,
The elastic force of the elastic force spring 260 is applied to the space between the fixing piece 255a and the lens pick-up rod 258 in such a manner that the elastic force is applied to the lens pick-up rod 258 while passing through the drop- ) Is provided on the outer surface of the soft lens.

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