KR101357533B1 - Contact lens lower mold position adjustment jig - Google Patents

Abstract

The present invention relates to a contact lens lower mold position adjustment jig which prevents a situation when a protrusion formed on a lower mold causes defective products during a contact lens production process using upper and lower molds beforehand using the lower mold position adjustment jig; and accurately assemble the upper and lower molds for improving the quality and the reliability of contact lenses.

Description

Contact Lens Lower Mold Positioning Jig {CONTACT LENS LOWER MOLD POSITION ADJUSTMENT JIG}

The present invention relates to a contact lens lower mold positioning jig, and more particularly to a contact lens lower mold positioning jig that can improve the quality of the contact lens by assembling the upper mold in the lower mold. .

In general, contact lenses are mainly used as products for correcting the user's visual acuity. In recent years, however, contact lenses have been added to the eyesight correction function to add beauty effects to the eyes of the user.

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 a mold injected from the mold injection unit to the cutting unit, a clamping unit for fixing the 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.

In addition, Patent Registration No. 10-1217976 includes a main body; A mold rotating unit installed in the main body and stacking a plurality of molds containing a liquid lens material and rotating them all at once to mold the liquid lens material into a lens shape 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 molds; And a nitrogen supply line connected to the mold rotating unit and supplying nitrogen to the mold rotating unit so that the lens material contained in the plurality of molds is not in contact with air, A lower fixing plate having a first hollow portion formed at the center thereof and having a nitrogen inlet port connected to the nitrogen supply line on one side of the outer circumferential surface and a nitrogen outlet port for discharging the nitrogen supplied to the nitrogen inlet port on the upper surface; An upper fixing plate spaced apart from the upper portion of the lower fixing plate and having a second hollow portion formed at the center thereof and having a cover for selectively covering the second hollow portion; A plurality of supports connecting the lower fixed plate and the upper fixed plate; A transparent tube which is formed in a cylindrical shape and connects the lower fixing plate and the upper fixing plate so as to be disposed inside the plurality of supports, the nitrogen outlet being disposed in an inner region; A mold mounting / rotating member disposed inside the transparent tube and rotatably supported by the first hollow portion and the second hollow portion, and stacking the plurality of molds in a lengthwise direction inside; And a drive member mounted on the main body to rotate the mold seating / rotating member.

In addition, Patent Registration No. 10-1070858 discloses a lens mold supplying means for uniformly aligning a plurality of lens molds each having a contact lens and simultaneously supplying the lens mold to the contact lens cutting means; Contact lens cutting means for machining a contact lens attached to the supplied lens mold; An outer surface polishing means for polishing the cut surface of the cut contact lens with a polishing machine to remove the uneven portion; And a lens mold separating means for separating the contact-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 device having a rotary plate rotatably mounted on the housing and a plurality of heating means for heating the lens mold by heat generated by a heating member provided on the inner side of the circumferential portion of the rotary plate; A pressing unit fixedly installed at a predetermined distance apart from the mold separating device and pressing the lens mold fixed to the heating unit; A lens carrier installed on the housing and collecting the lens separated from the lens mold through the pressing portion from one side; A mold discharge path installed at one side of the mold separating device so as to be inclined to one side downward; A first pick-up device installed to the frame provided with the mold discharge path so as to be able to reciprocate right and left along a guide rail and to pick up a lens separated from the lens mold and transfer it to the lens carrier; And a second pick-up device installed on one side of the first pick-up device so as to be reciprocatable right and left along a guide rail, for picking up a lens mold from which the lens is detached and transferring the lens mold to the mold discharge path. A lens mold separating device of a lens half-mold type manufacturing automation system is disclosed.

[0008] On the other hand, Patent Registration No. 20-0411134 discloses a semiconductor device having an upper core having a convex curved portion at the bottom, a lower core coupled to a lower end of the upper core, And a lens core which is inserted to form a mold cavity with a predetermined gap therebetween so as to mold the mold by injecting a mold material into the mold cavity, wherein the upper core includes a lens contact surface of the mold, A first upper core having a curved portion formed so as to be convexly formed and having a step formed vertically or inclined at an outer periphery of the curved portion and inclined inwardly at the stepped portion and inclined at a side opposite to the curved portion; The first upper core is inserted into the first upper core so as to be closely contacted with the inner surface of the first upper core, and a second inclined surface is formed on the peripheral edge portion so as to be in close contact with the first inclined surface and inclined to extend from the first step, Wow; And a third upper core having a fastening protrusion formed on an inner side thereof so that the second upper core is inserted inside and the fastening protrusion is seated and hooked.

As described above, a method of manufacturing a contact lens generally includes a method using a semi-molded molded product and a method using a semi-molded molded product.

In the method using a semi-molded product, the contact lens molding liquid is injected into the lower mold product molded by the injection method, and then the upper mold is assembled to the lower mold to be molded in equipment such as dry and wet ovens to manufacture the contact lens. (Molding) The contact lens produced here is in an unfinished state, that is, the quality of the contact lens, such as the frequency, thickness and design is not determined, so the product is processed by cutting equipment such as a lathe to produce the product.

The method using the molded product is described in detail with reference to the accompanying drawings (1) the embodiment.

In the method using the fully molded product, the upper mold 111 is assembled into the lower mold after the injection of the contact lens forming liquid 110 into the lower mold 101 product formed by the injection method in which the frequency, thickness and design are formed. Then, the contact lens 104 is manufactured (molded) by molding in a facility such as a dry and wet oven. The contact lens 104 produced here is in a finished state, that is, the quality of the contact lens 104 is determined such as the frequency, thickness, and design. It is not necessary.

In the case of using a semi-molded product, the process of assembling the upper mold into the lower mold after injecting the contact lens molding liquid into the lower mold product is completed since the quality of the contact lens is processed and then processed by cutting equipment such as a lathe. The quality of the lower mold does not significantly affect the quality of the product and the quality of the contact lens does not significantly affect. The method using the fully molded product is a very important production process because the quality of the product is determined in the process of assembling the upper mold into the lower mold after injecting the contact lens molding liquid into the lower mold product. It greatly affects the quality of contact lenses.

Since the method using the molded product is produced by the simple process of assembling the contact lens, the production cost is much lower than the product produced using the method using the semi-molded product.

However, it is pointed out that the contact lens assembly process must be very sophisticated because the quality of the product is determined in the assembly process of the contact lens.

In addition, high quality contact lens products can be manufactured only when the quality of the lower mold product and the upper mold product is very high.

However, the contact lenses produced by the method using the above-mentioned conventional mild molded articles could not produce high quality products due to the following problems.

That is, the embodiment of the conventional production method will be described in detail with reference to the accompanying drawings (2) to (1) to (4), in the manufacturing method of the lower mold 101, as shown in Figure (2) of the injection mold When the discharge pin 201 pushes the product out of the injection mold 200 in order to discharge the product after molding the product essential for the production method, the surface contacting the discharge pin 201 is discharge pin position 202 by the discharge pin 201. ) Is formed.

In particular, due to the precision and aging of the injection mold, the discharge pin seat 202 is mainly caused by a phenomenon in which protrusions are formed as shown in Fig. (1).

The lower mold 101 is inclined by the discharge pin protrusion 202 when the lower mold 101 is seated on the equipment such as the lower mold support 102 as shown in FIG. As the figure (3) shows the disadvantage that it cannot be assembled correctly in the inclined state, the vertices of the upper mold and the lower mold are changed, which is a problem for the frequency, etc., and the edge thickness due to the upper mold and curvature deviation according to the design of the lower mold. Deviation is also large. In addition, the pattern of the upper mold tinted for the cosmetic lens also had a disadvantage that the poor contact lens that the center is distorted.

In addition, the lower mold 101 moves to a product such as a lower mold support part 102 manufactured in the form of a tray and the like, and is seated on the equipment. Even if not, the lower mold 101 and the lower mold support portion 102 is a gap is generated as shown in the Figure 4 is seated on the lower mold 101 and the lower mold support portion 102, it is difficult to align the position. When the gap is described, the gap is formed by injecting the contact lens forming liquid 110 into the lower mold 101 and then assembling the upper mold 111 to the lower mold 101 to provide equipment such as dry and wet ovens. When molding at high temperature in the lower mold support portion 102 is applied with high heat, at this time, the lower mold 101 and the lower mold support portion 102 is removed because it is a gap applied in consideration of the thermal deformation caused by the high temperature. There is no number. If the lower mold 101 is seated on the lower mold support portion 102 without any gap, thermal deformation occurs during high temperature molding, resulting in a problem in the frequency of the upper mold and the lower mold, which is a problem, and the upper mold according to the design of the lower mold. Due to the curvature deviation and the variation of the thickness of the edge is also large. In addition, the pattern of the upper mold tinted for the cosmetic lens also had a disadvantage that the poor contact lens that the center is distorted. In addition, when the molded mold is removed from the lower mold support part after the high temperature molding, the mold may be damaged and deformation may occur.

Therefore, the present invention has been made to solve the above problems, in the case of manufacturing the contact lens using the upper, the lower mold, the situation in which the protrusion formed on the lower mold causes the failure of the product in advance by the lower mold positioning jig Excluding and accurately assembling the upper and lower molds, to provide a contact lens lower mold positioning jig to improve the quality of the contact lens and to increase the reliability.

The present invention relates to a contact lens lower mold positioning jig, the lower mold support portion 102 is formed in the center of the hole for supporting the lower mold 101, the lower mold 101 and the lower mold support portion 102 A lower mold positioning jig 2 (114) formed at the center having a hole for supporting the lower portion, an upper mold supply jig 112 for supplying the upper mold 111, and an outer periphery of the upper mold supply jig 112. Lower mold positioning jig 1 (113), the upper mold 111 to adjust the position of the lower mold 101 to the lower mold positioning jig 1 (113) before assembling the lower mold 101. In that,

When the lower mold 101 supplied by the conventional feed tray is seated in the hole of the lower mold support 102, the lower mold 101 is inclined by the discharge pin protrusion generated during the production of the lower mold. The lower mold support portion 102 seated in the hole of the 102, the lower mold 101 is seated on the lower mold positioning jig 2 (114), the hole of the lower mold positioning jig 2 (114) It is formed smaller than the hole of the lower mold support portion 102, the lower mold 101 is not in contact with the hole of the lower mold support portion 102, it is seated in contact with the hole of the lower mold positioning jig 2 (114), Thereafter, the lower mold positioning jig 1 113 is lowered and contacts the lower mold 101 to adjust the position correctly.

Therefore, in the present invention, when manufacturing contact lenses using upper and lower molds, the lower mold positioning jig excludes the situation in which the protrusions formed in the lower mold cause the defect of the product. In addition, there is a remarkable effect of improving the quality and reliability of contact lenses.

1 is an explanatory diagram of a method for manufacturing a contact lens using a molded product
2 is an explanatory diagram of a manufacturing method of a lower mold;
3 is an explanatory diagram of defects in assembling contact lens upper and lower molds;
4 is a contact lens manufacturing apparatus provided with the present invention the contact lens lower mold positioning jig
5 is an operation of the contact lens manufacturing apparatus when the contact lens lower mold position adjustment jig of the present invention is installed;

The present invention will be described in detail with reference to the accompanying drawings. 1 is a diagram illustrating a method for manufacturing a contact lens using a molded product, FIG. 2 is a diagram illustrating a manufacturing method of a lower mold, FIG. 3 is a diagram illustrating a defect in assembling contact lens upper and lower molds, and FIG. 4 is a contact lens lower mold according to the present invention. Contact lens manufacturing apparatus provided with a positioning jig, FIG. 5 is an operation view of the contact lens manufacturing apparatus when the contact lens lower mold positioning jig of the present invention is installed.

Preferred embodiments of the present invention will be described in detail with reference to FIGS. 4 and 5.

The contact lens assembly device 100 according to the present invention, as shown in Figure 4, the lower mold support portion 102 for supporting the lower mold 101, a conventional feed tray and upper mold 111 for discharging and discharging the lower mold 111 The lower mold positioning jig which is mounted on the upper mold supply jig 112 and the upper mold supply jig 112 to supply the upper mold 111 to align the lower mold 101 before the upper mold 111 is assembled to the lower mold 101. 1 (113), the lower mold positioning jig 2 (114).

 When the lower mold 101 supplied by the lower mold supply tray conventionally used in the art of manufacturing contact lenses is conventionally seated on the lower mold support 102 as shown in FIG. The lower mold 101 is released from the supply tray and then placed depending on the lower mold support 102.

At this time, the lower mold 101, which was placed on the supply tray, is spaced apart from the lower mold support 102 by the discharge pin protrusion generated during the production of the lower mold, and is also placed on the lower mold support 102 in an inclined state, so that an accurate state is achieved. It is not placed.

Therefore, the lower mold 101 placed on the lower mold positioning jig 2 in the next process is also not placed in the correct state.

At this time, the hole of the lower mold positioning jig 2 114 is formed to be smaller than the hole of the lower mold support 102, so that the lower mold 101 does not contact the lower mold support 102, the lower mold Only the hole of the positioning jig 2 114 is brought into contact with the hole.

Therefore, according to the present invention, after the contact lens molding liquid 110 is quantitatively injected into the lower mold 101 by a conventional molding liquid injection device, the upper mold supply jig 112 is lowered to lower the upper mold 111. Before assembling to the 101, the lower mold positioning jig 1 113 mounted on the upper mold 102 supply jig 112 corrects the inclined state of the lower mold 101.

Since the lower mold 101 seated on the lower mold positioning jig 2 104 is not a flat surface but a spherical surface, the lower mold 101 is naturally aligned when the lower mold positioning jig 1 113 is in contact with the lower mold. You can do it.

On the other hand, the upper mold supply jig 112 is raised and lowered by a pneumatic cylinder using the air as the working fluid, the upper mold is assembled and released to the lower mold, the pneumatic cylinder structure is widely used in the art Therefore, detailed description is omitted.

Therefore, in the present invention, when manufacturing contact lenses using upper and lower molds, the lower mold positioning jig excludes a situation in which protrusions formed in the lower mold cause product defects, and the upper and lower molds are assembled correctly. Thereby, there is a remarkable effect of improving the quality of the contact lens and increasing the reliability.

100 contact lens 110 molding liquid
101: lower mold 102: lower mold support
111: upper mold 112: upper mold supply jig
113: Lower mold positioning jig 1
114: Lower mold positioning jig 2

Claims (1)

Adjusting the position of the lower mold formed at the center of the lower mold support portion 102 formed at the bottom of the lower mold 101 and the lower mold formed at the center of the lower mold support portion 102 formed at the center of the lower mold support portion 102. Jig 2 114, an upper mold supply jig 112 for supplying the upper mold 111, and a lower mold positioning jig 1 113 mounted on an outer circumference of the upper mold supply jig 112. By adjusting the position of the lower mold 101 to the lower mold positioning jig 1 113 before the upper mold 111 is assembled to the lower mold 101,
When the lower mold 101 supplied by the conventional feed tray is seated in the hole of the lower mold support 102, the lower mold 101 is inclined by the discharge pin protrusion generated during the production of the lower mold. The lower mold support portion 102 seated in the hole of the 102, the lower mold 101 is seated on the lower mold positioning jig 2 (114), the hole of the lower mold positioning jig 2 (114) It is formed smaller than the hole of the lower mold support portion 102, the lower mold 101 is not in contact with the hole of the lower mold support portion 102, it is seated in contact with the hole of the lower mold positioning jig 2 (114), Thereafter, the lower mold position adjusting jig 1 (113) descends and contacts the lower mold 101 to adjust the position of the lower contact lens lower mold position adjusting jig.

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