WO2014137089A1

WO2014137089A1 - Cosmetic contact lens upper mold fixing device

Info

Publication number: WO2014137089A1
Application number: PCT/KR2014/001451
Authority: WO
Inventors: 정성윤; 박근창
Original assignee: 주식회사 백산사
Priority date: 2013-03-05
Filing date: 2014-02-24
Publication date: 2014-09-12
Also published as: KR101394310B1

Abstract

The present invention relates to a cosmetic contact lens upper mold fixing device. The device comprises: a mold jig having an inner fixing part (110) and a lower close-contact part (120). The inner fixing part (110) comprises: an extension jig (111) for fixing or releasing the inside of an upper mold (101); a taper pin (112) coupled to the inside of the extension jig (111) to extend the extension jig (111); and an air cylinder (114) coupled to the lower end of the taper pin (112) to raise and lower the taper pin (112). The lower close-contact part (120) comprises: a lower pad part (121) of which the upper surface is in contact with the lower part of the upper mold (101); and a fixing plate (123) on which the lower surface of the lower pad part (121) is installed, wherein the fixing plate (123) has a groove in the center thereof so that the lower part of the extension jig (111) is inserted into the groove, and the taper pin (112) vertically penetrates the groove, and wherein a spring (113) is installed between the lower part of the extension jig (111) and the bottom surface of the groove. Accordingly, when the taper pin (112) is lowered by a descending movement of the air cylinder (114), the extension jig (111) extends to fix the inside of the upper mold (101), and when the taper pin (112) continuously moves downwardly, the upper mold (101) in a fixed state is lowered to the lower pad part (121) of the lower close-contact part (120) so that the cosmetic contact lens upper mold fixing device according to the present invention can more accurately fix the position of the upper mold.

Description

Beauty contact lens upper mold fixing device

The present invention provides a method for manufacturing a contact lens in order to improve the quality of the cosmetic contact lens by printing a variety of patterns and colors in the correct position on the upper mold molded by the injection method to manufacture the cosmetic contact lens Cosmetic contact lens upper mold fixing device.

In general, the contact lens is mainly used as a product to correct the vision of the user. However, recently, contact lenses have been added to the eye correction function to add a beauty function to the user's eyes when adding a beauty effect.

Korean Patent Publication No. 10-2012-0092213 discloses a mold injection unit for injecting a mold for manufacturing a contact lens, a cutting unit for cutting and separating the mold from a mold fixing frame integrally formed with the mold injected from the mold injection unit, and the mold injection. A lens molding liquid disposed between the unit and the cutting unit to transfer the mold injected from the mold injection unit to the cutting unit, a clamping unit for fixing the respective cut molds, and a mold fixed to the clamping unit An automatic contact lens manufacturing apparatus including a plurality of lens forming units comprising a molding liquid injecting apparatus for injecting the same is disclosed.

Further, Patent Publication No. 10-1217976 discloses a main body; A mold rotating unit installed in the main body and stacking a plurality of molds containing liquid lens material and rotating the mold at once to form the liquid lens material into a lens by centrifugal force; An ultraviolet lamp module installed in the main body so as to be close to the mold rotating unit and emitting ultraviolet rays to the lens material contained in the plurality of molds; And a nitrogen supply line connected to the mold rotating unit and supplying nitrogen to the mold rotating unit such that the lens material contained in the plurality of molds does not come into contact with air. The mold rotating unit includes the main body. A lower fixing plate having a first hollow part fixed to the center, a nitrogen inlet port connected to the nitrogen supply line on one side of an outer circumferential surface thereof, and a nitrogen outlet port on which the nitrogen outlet port is discharged; An upper fixing plate disposed at an upper portion of the lower fixing plate, having a second hollow portion at a center thereof, and having a cover selectively covering the second hollow portion; A plurality of supports connecting the lower fixing plate and the upper fixing plate; A transparent tube formed in a cylindrical shape, connecting the lower fixing plate and the upper fixing plate to be disposed inside the plurality of supports, and the nitrogen outlet being disposed in an inner region; A mold seating / rotating member disposed inside the transparent tube and rotatably supported by the first hollow portion and the second hollow portion to stack the plurality of molds in a longitudinal direction therein; And a driving member installed in the main body to rotate the mold seating / rotating member. The contact lens manufacturing apparatus of claim 1 is disclosed.

In addition, Patent Registration No. 10-1070858 has a lens mold supply means for uniformly aligning a plurality of lens mold with a contact lens and supplying the lens mold one by one to the contact lens cutting means; Contact lens cutting means for processing a contact lens attached to the supplied lens mold; Outer surface polishing means for removing uneven portions by machining the cut surface portion of the cut contact lens with a polishing machine; And a lens mold separating means for separating the externally polished contact lens from the lens mold, wherein the lens mold separating means comprises: a housing having a driving unit and a control unit therein; A mold separating apparatus rotatably installed on the housing, and a plurality of heating means installed on the upper portion of the circumferential portion of the rotating plate to heat the lens mold by the heating of the heating member provided therein; A crimping part which is fixedly spaced apart from the mold separation device at a predetermined distance and compresses the lens mold which is bound to the heating means; A lens carrier installed on the housing and collecting the lens separated from the lens mold through the pressing unit on one side; A mold discharge path installed at an inclined side to the frame provided at one side of the mold separation device; A first pickup device installed on the frame provided with the mold discharge path so as to move left and right reciprocally along the guide rail and picking up the lens separated from the lens mold and transferring the lens to the lens carrier; And a second pickup device configured to reciprocate from side to side along the guide rail at one side of the first pickup device, and to pick up the lens mold from which the lens is separated and transfer it to the mold discharge path. A lens mold separation apparatus of a lens semi-molded manufacturing automation system is disclosed.

On the other hand, Patent Registration Publication No. 20-0411134 has an upper core having a convex curved portion at the bottom, a lower core coupled to the lower end of the upper core, and provided on the inner side of the lower core, but the lower end of the upper core and constant In the mold molding injection molding apparatus of a contact lens for forming a mold mold by injecting a mold material into the mold cavity to insert a mold cavity of the interval, wherein the upper core, the lens contact surface of the mold mold A first upper core having a curved portion formed to be convexly formed, and having a stepped portion vertically or inclined at the outer periphery of the curved portion, and formed to be inclined inwardly from the stepped portion, the first inclined surface being inclined toward the opposite side of the curved portion; The second upper core is inserted to be in close contact with the inside of the first upper core, the second inclined surface is formed to be in close contact with the first inclined surface to be inclined to extend from the stepped portion, and the engaging upper projection is formed on the outer surface. Wow; A mold injection molding apparatus for a contact lens is disclosed, wherein the second upper core is inserted into an inner side, and a third upper core having a locking jaw formed therein so that the locking jaw is seated thereon.

As described above, in general, a method for manufacturing a contact lens is injected into the lower mold product molded by the injection method, and then the upper mold is assembled to the lower mold to heat the equipment at a high temperature in a facility such as a dry or wet oven. By solidifying, a contact lens is manufactured (molded). The contact lens production method is mainly divided into two methods. First, the produced contact lens is in an unfinished state, that is, a state in which the quality of the contact lens is not determined, and thus the contact lens is used as a cutting equipment such as a lathe. There is a half-mold production method for producing a product by reprocessing, and secondly, a full-mold production method for determining the quality of the frequency and the like when molding a contact lens.

1 illustrates an embodiment of a general contact lens molding method.

Prior to molding the contact lens, printing a plurality of colors and patterns on the upper mold and molding the contact lens produces a cosmetic contact lens in which various colors and patterns are formed, rather than a general transparent contact lens. Therefore, in order to produce cosmetic contact lenses, a process of printing various colors and patterns on the upper mold is first necessary.

Figure 2 illustrates an embodiment of the cosmetic contact lens molding method.

An embodiment of printing various colors and patterns on the upper mold will be described in detail with reference to the attached figure (3).

In order to print various colors and patterns on the upper mold 101 product formed by the injection method, the upper mold is mounted on the mold jig 102 and the printing liquid 104 is applied to the pattern plate 103 having various patterns engraved thereon. After the pad 105 made of a material such as silicon takes the printing liquid engraved on the glyph plate 103 and transfers it back to the upper mold 101 to print multiple colors and patterns on the upper mold 101. do. At this time, the position of the upper mold fixed by the mold jig 102 and the position of the pattern plate 103 should be accurately set. If not, a defective product may be generated due to a phenomenon such as tilting and distraction of the pattern printed on the upper mold. Therefore, the position of the upper mold mounted on the mold jig 101 and the position of the pattern plate must be kept constant at all times to manufacture high quality cosmetic contact lens products.

The position of the glyph plate 103 can be kept constant in a fixed manner using a general bolt or the like. However, the upper mold 101 mounted on the mold jig 102 cannot always be located at the same position due to the quality of the product. This is because the upper mold is a product manufactured by the injection method, and therefore cannot always guarantee uniform quality.

The upper mold manufactured by the injection method has the following quality characteristics.

First, the subtraction gradient, which is an essential element of the injection molded product, is in the inner shape of the upper mold.

Second, due to the shrinkage of the product caused by the temperature difference between the high temperature at the time of injection and the low temperature at the time of cooling, it is difficult to maintain a constant internal dimension of the upper mold at all times due to the change in internal dimension of the upper mold and dents.

Third, it is difficult to maintain the inner dimensions because the mold and the cover of the upper mold have to be injected in different molds according to the situation in several molds having the same dimensions.

The above is only a quality characteristic of the upper mold manufactured by the injection method, and thus the quality of the upper mold is not directly regarded as a quality problem of the upper mold. However, when manufacturing the mold jig in which the upper mold is mounted, it is inevitably made smaller than the inner dimension of the upper mold in consideration of the above point. Therefore, as shown in FIG. 4, a gap is generated between the upper mold 101 and the mold jig 102. As a result, the upper mold mounted on the mold jig 102 is moved as much as the gap so that the product is always in the correct position. Cannot be maintained, and the print position is also changed. If the mold jig is made tight with the inside of the upper mold, it will be very difficult to discharge the mold due to the compression of the upper mold on the mold jig due to the pressure generated during printing by the silicon pad or the like on the upper mold.

Therefore, the present invention has been made to solve the above problems, by fixing the upper mold in the correct position on the mold jig to print a variety of colors and patterns to be printed on the upper mold always in the same position high-quality cosmetic contact An object of the present invention is to provide a cosmetic contact lens upper mold fixing device.

The present invention relates to a cosmetic contact lens upper mold fixing device, located in the lower portion of the upper mold 101 which is supplied by the upper mold automatic feeder for the operator or the general jig for fixing or releasing the upper mold 101 In the cosmetic contact lens upper mold fixing device comprising, the mold jig is composed of the inner fixing portion 110 and the lower contact portion 120, the inner fixing portion 110 is fixed to the inside of the upper mold 101 The expansion jig 111 to release from, the tapered pin 112 coupled to the inside of the expansion jig 111 to expand the expansion jig 111, the tapered pin 112 is coupled to the lower end of the tapered pin 112 It is composed of an air cylinder 114 for raising and lowering the lower contact portion 120, the lower pad portion 121 is in contact with the upper surface lower portion of the upper mold 101, and the lower surface of the lower pad portion 121 It is composed of a fixed plate 123 is installed, the fixed plate ( A groove is formed in the center thereof, and a lower portion of the expansion jig 111 is inserted into the groove, and a tapered pin 112 penetrates up and down, and a spring 113 is disposed between the lower portion of the expansion jig 111 and the bottom of the groove. ) Is installed,

When the tapered pin 112 descends due to the downward movement of the air cylinder 114, the expansion jig 111 expands to fix the inside of the upper mold 101, and the tapered pin 112 continuously moves downward. When the upper mold 101 in a fixed state is lowered to the lower pad portion 121 of the lower contact portion 120, it is characterized in that to fix the position of the upper mold more accurately.

Therefore, the present invention has a remarkable effect of improving the quality and reliability of the cosmetic contact lens by printing the various patterns and colors on the molded upper mold in the correct position.

1 is a view illustrating an embodiment of a general contact lens molding method

2 is an embodiment of a cosmetic contact lens molding method

Figure 3 is an embodiment of printing a plurality of colors and patterns on the upper mold

Figure 4 is a diagram illustrating the quality defects of the upper mold manufactured by the injection method

5 is a view of the present invention cosmetic contact lens upper mold fixing device

Figure 6 is a view of the operation of the present invention cosmetic contact lens upper mold fixing device

Figure 7 is a front view of the expansion jig (collet) in the contracted state of the present invention cosmetic contact lens upper mold fixing device

8 is a plan view of the expansion jig (collet) in the contracted state of the present invention cosmetic contact lens upper mold fixing device

Figure 9 is a front view of the expansion jig (collet) is expanded in the cosmetic contact lens upper mold fixing device of the present invention

Figure 10 is a plan view of the expanded jig (collet) in the expanded state in the cosmetic contact lens upper mold fixing device of the present invention

11 is a detailed operation of the expansion jig (collet) in the state in which the expansion jig (collet) is coupled to the expansion jig fixing ring in the cosmetic contact lens upper mold fixing device of the present invention

100: printing fixing device 101: upper mold

110: internal fixing part 120: lower part

111: expansion jig 112: tapered pin

113: spring 121: lower pad portion

122: exhaust nozzle 123: fixed plate

114: air cylinder 115: expansion jig fixing ring

The present invention relates to a cosmetic contact lens upper mold fixing device, which is located in the lower portion of the upper mold 101 to be supplied by the automatic supply of the upper mold for the operator or the general mold jig for fixing or releasing the upper mold 101 In the cosmetic contact lens upper mold fixing device comprising, the mold jig is composed of the inner fixing portion 110 and the lower contact portion 120, the inner fixing portion 110 is fixed to the inside of the upper mold 101 The expansion jig 111 to release from, the tapered pin 112 coupled to the inside of the expansion jig 111 to expand the expansion jig 111, the tapered pin 112 is coupled to the lower end of the tapered pin 112 It is composed of an air cylinder 114 for raising and lowering the lower contact portion 120, the lower pad portion 121 is in contact with the upper surface lower portion of the upper mold 101, and the lower surface of the lower pad portion 121 It is composed of a fixed plate 123 is installed, the fixed plate (1) 23) A groove is formed in the center thereof, and a lower portion of the expansion jig 111 is inserted into the groove, and a tapered pin 112 penetrates up and down, and a spring 113 is disposed between the lower portion of the expansion jig 111 and the bottom of the groove. ) Is installed,

In addition, the expansion jig 111 is characterized in that the collet form.

The present invention is described in detail by the accompanying drawings as follows.

1 is an embodiment of a general contact lens forming method, FIG. 2 is an embodiment drawing of a cosmetic contact lens forming method, FIG. 3 is an embodiment drawing for printing various colors and patterns on the upper mold, and FIG. 4 by an injection method. Defective description of the quality of the manufactured upper mold, Figure 5 is a cosmetic contact lens upper mold fixing device of the present invention, Figure 6 of the cosmetic contact lens upper mold fixing device of the present invention, Figure 7 of the cosmetic contact lens upper mold fixing of the present invention 8 is a plan view of the expanded jig (collet) in the contracted state of the device, Figure 8 is a plan view of the expanded jig (collet) contracted state in the fixing device, Figure 9 is a top view of the present invention cosmetic contact lens Front view of the expansion jig (collet) is expanded in the fixing device, Figure 10 is a plan view of the expansion jig (collet) is expanded in the upper mold fixing device according to the present invention, Figure 11 The present invention is an expansion jig (collet) operating detailed view is to be reduced, enlarged in the combined expansion in the jig fixing ring state in cosmetic contact lens mold upper retainer.

Preferred embodiments of the present invention will be described in detail with reference to FIGS. 5 to 6.

Referring to the printing fixing device 100 of the cosmetic contact lens according to the present invention, as shown in Figure 3, the mold jig is composed of an internal fixing part 110 and the lower contact portion 120, the internal fixing part 110 ) Is a collet-shaped expansion jig 111 for fixing or releasing the inside of the upper mold 101, and a tapered pin 112 coupled to the lower portion of the expansion jig 111 to expand the expansion jig 111. A spring 113 coupled to the lower end of the expansion jig 111 of the tapered pin 112 and an air cylinder 114 for elevating the tapered pin 112.

The lower contact portion 120 includes a lower pad portion 121 having an upper surface contacting the lower portion of the upper mold 101, and a fixing plate 123 on which a lower surface of the lower pad portion 121 is installed. The fixing plate 123 is provided with an air exhaust nozzle 122 for drying the ink printed on the upper mold 101 with air.

The lifting and lowering means of the tapered pin 112 provided to expand the expansion jig 111 is installed below the tapered pin 112 and consists of the tapered pin 112 and the fixed air cylinder 114.

The operating method of the apparatus of the present invention is the upper mold 101 supplied by the operator or the automatic feeder while the expansion jig 111 is expanded by the movement of the tapered pin 112 moved in the downward movement of the air cylinder 114, the upper mold The inside of 101 is fixed correctly. When the tapered pin 112 is continuously moved, the upper mold 101 in the fixed state is pulled to the lower pad part 121 of the lower contact part 120 to fix the position of the upper mold more completely.

The expansion jig 111 extending the upper mold 101 by the tapered pin 112 is primarily moved and expanded in the form of an axially perpendicular direction in the advancing direction of the tapered pin 112 to fix the inside of the upper mold and continuously As the tapered pin 112 is moved, the upper mold is secondarily fixed to the lower pad part 121 by the spring 113.

If only the inside of the upper mold 101 is fixed by the expansion jig 111, the upper mold 101 should be supplied in close contact with the lower pad part 121 when the upper mold 101 is supplied by an operator or an automatic feeder. However, this is determined by the skill of the operator supplying the upper mold 101 or the accuracy of the automatic feeder. If this is wrong, the upper mold 101 is fixed by the upper jig 111 but is spaced apart from the lower pad part 121. May occur. If such a phenomenon occurs, the upper mold 101 is raised to form a high print point, and thus the upper mold 101 is lowered due to poor printing quality and pressure generated during printing by the silicon pad on the upper mold 101. It descends by a distance spaced apart from (121). At this time, a printing defect occurs due to the movement of the upper mold 101 or the like.

In the present invention, the upper mold 101 is primarily fixed to the inside, and the second mold is closely fixed to the lower pad 121 to accurately fix the upper mold 101. Due to the movement of the taper pin 112, the expansion jig 111 primarily expands and fixes the inside of the upper mold 101, and then secondly closely fixes the lower pad part 121 to fix the internal expansion fixing force. This is because of the force of the elastic modulus of the spring 113 related to the elastic force of the collet-shaped expansion jig 111 and the lower contact fixing force.

The internal fixing force generated when moving to the lower portion of the tapered pin 112 requires a lower force than the close fixing force, and when the taper pin 112 moves, the expansion jig 111 primarily fixes the upper mold 101 to the second side. As a result, the upper mold 101 is fixed to the lower pad part 121. The expansion jig 111 is manufactured in the form of a collet which is widely used conventionally, and its expansion force is determined by the elastic modulus of the fabrication material.

When describing an example of the collet-type expansion jig 111, the upper portion of the collet is divided into a plurality, the lower portion is integral, the upper and lower grooves of the outer periphery of the collet are respectively formed, the lower groove The collet retaining ring is fixed. Therefore, when the taper pin descends, the collet expands, and when the taper pin descends, the lower portion of the collet is integrated, and the collet pin is reduced to its original position by the elastic force.

In other words, when the tapered pin 112 is raised, the collet-shaped expansion jig 111 is in a state in which the pressure by the tapered pin 112 is released inside the expansion jig 111. By the contraction state. The expansion jig 111 in the contracted state is fixed to the inside of the upper mold 101 in such a way that the tapered pin 112 moves downward.

When the printing is completed, when the tapered pin 112 rises in the opposite direction, the expansion jig 111 is reduced in diameter to its original state due to elastic restoring force, thereby releasing the upper mold.

Claims

A cosmetic contact lens upper mold fixing device including a mold jig positioned below the upper mold 101 supplied by an operator or an upper mold automatic feeder for fixing or releasing the upper mold 101, wherein the mold The jig is composed of an internal fixing part 110 and the lower contact portion 120, the internal fixing part 110 is an expansion jig 111 for fixing or releasing the inside of the upper mold 101, and the expansion jig ( 111 is composed of a taper pin 112 coupled to the inside to expand the expansion jig 111, and an air cylinder 114 coupled to the lower end of the taper pin 112 to raise and lower the taper pin 112, The lower contact part 120 is composed of a lower pad part 121 having an upper surface contacting the lower part of the upper mold 101 and a fixing plate 123 on which a lower surface of the lower pad part 121 is installed. 123) a groove is formed in the center, and a lower portion of the expansion jig 111 is formed in the groove. Inserted and the tapered pin 112 penetrates up and down, a spring 113 is installed between the bottom of the expansion jig 111 and the groove bottom surface,

When the tapered pin 112 descends due to the downward movement of the air cylinder 114, the expansion jig 111 expands to fix the inside of the upper mold 101, and the tapered pin 112 continuously moves downward. When the upper mold 101 in a fixed state is lowered to the lower pad portion 121 of the lower contact portion 120 to more accurately fix the position of the upper mold,

The expansion jig 111 is a cosmetic contact lens upper mold fixing device, characterized in that the collet form