KR20130131664A - Molding apparatus for manufacturing lens and method for manufacturing lens using them - Google Patents

Abstract

Disclosed are a molding apparatus for manufacturing lenses, which minimizes resin loss and enables formed lenses to have uniform precision and can correspond to resin shrinkage at a hardening step of a lens manufacturing process, and a method for manufacturing lenses using the same. The molding apparatus for manufacturing lenses, which manufactures molded products by irradiating with light, comprises: an injection core in which the resin for forming the molded products is injected; lower molds which are arranged around the injection core and are formed with cavity units in which a plurality of cavities for forming the molded products is formed; a guide mold having a vertically penetrated structure which accommodates the lower molds; upper molds which are arranged on upper part of the guide mold and are formed of a light permeable material sealing the upper part of the cavities; and cutting molds into which the molded products which are UV-cured and purged in the cavities are inserted, and which separates the molded products into individual lenses in order to expand demands.

Description

Mold apparatus for lens manufacturing and lens manufacturing method using the same {MOLDING APPARATUS FOR MANUFACTURING LENS AND METHOD FOR MANUFACTURING LENS USING THEM}

The present invention relates to a mold apparatus, and more particularly, to a mold apparatus for manufacturing a lens for manufacturing a lens using a photocurable resin and a lens manufacturing method using the same.

Examples of the lens manufacturing method include a direct production through a laser beam, a production by a photolithography etching process, or a method by a reflow method. In general, a lens mold is manufactured using processing equipment such as a diamond turning machine (DTM), and a nickel master mold is manufactured by electroless plating, and then the mold for the lens is manufactured into an array. The lens is manufactured by expanding and injecting and injecting resin.

However, in the injection mold method, the size of the injection machine should increase as the number of lens injection products increases. In addition, in the process of melting and injecting the resin, which is a raw material, the resin is consumed by the runner and the gate, and thus there is a limitation in the cavity increase. In addition, when the core and the mold body are heated to a high temperature during lens manufacturing, a gap between the core and the mold body increases. As a result, the phenomenon of tilting and de-centering of the core occurs, and as a result, the shape and curvature of the lens are deformed, thereby degrading the accuracy of the lens.

Publication 10-2011-0092138 discloses a mold for a lens for performing a light curing process. Specifically, a plurality of cavities spaced at regular intervals are arranged in the form of a checkerboard, resin is injected to form a batch, and then cut to form respective lenses.

Therefore, there is no choice but to lose the resin due to the margin of the remaining areas excluding the lens shape including the cavity spacing. In addition, since the resin injection method combines the upper and lower molds and injects the resin into the mold through the injection hole at the side end, the resin injection pressure is not constant according to the distance from the injection hole, so that all lenses in the mold can have uniform precision. There is no problem.

In addition, since the upper and lower molds are fixed after joining the mold, the cavity must be fixed, and the lens shape needs to be manufactured only by injecting the resin into the fixed cavity. There is a problem that occurs.

In addition, since the lens is used to simply cut the cured molding into individual lenses in order to finally produce the lens after the resin is photocured, the lens is not cut precisely and is inefficient. In addition, since the cavities are spaced at regular intervals, the path between the cavities is cut during cutting. Therefore, the outer portion of the lens is not precise due to the cut passage area, there is a problem that the produced lens can not be precise.

The technical problem to be achieved by the present invention is to provide a mold manufacturing apparatus for lens manufacturing that can minimize the resin loss, and to ensure that the lenses formed during manufacturing has a uniform precision, and can cope with the resin shrinkage in the curing step in the lens manufacturing process. There is.

According to an embodiment of the present invention, in the mold manufacturing mold apparatus for manufacturing a molded article through light irradiation, an injection core in which the molding resin is injected, and is disposed surrounding the injection core and for forming the molded article thereon A lower mold including a cavity part in which a plurality of cavities are formed; A guide mold having a vertical through structure accommodating the lower mold; An upper mold of a light transmissive material disposed on the guide mold and shielding an upper portion of the cavity; And a cutting mold into which the molded article which is photocured and taken out of the cavity is inserted to separate the molded article into individual lenses.

The injection core and the cavity portion slide in the vertical direction in the guide mold, respectively.

The cavity is formed such that the upper cross section is formed in a polygonal shape so that each cavity has a honeycomb shape, and the cavity portion is formed of a polygonal column corresponding to the shape of the upper cross section of the cavities.

The cutting mold may include a cutting guide having at least one side opened to insert the molding therein; And a cutter disposed in the other side of the cutting guide and sliding in the vertical direction, the cutter including a blade disposed to correspond to each cavity.

The cutting mold further includes a cap for shielding one side of the cutting guide opened after the molding is inserted.

The cutter slides in the cap direction to separate the lens molding into the individual lenses.

The injection core may include an injection space penetrated downwardly so that the resin can be injected from the bottom; And at least one injection hole connected to the injection space and formed on an upper side of the injection core such that the resin is injected into the cavity.

The injection core is upwardly slid so that the upper surface is in contact with the lower surface of the upper mold, the resin is injected into the cavity via the injection space and the injection hole after the upward sliding is completed.

The guide mold includes a discharge path for discharging the resin injected into the cavity to the outside.

The cavity part slides upward after the injection of the resin is completed to block the injection hole.

The cavity part slides upward after the injection of the resin is completed to block the discharge path.

A resin inflow passage is formed between the plurality of cavities.

According to another embodiment of the present invention, in the lens manufacturing method using the mold apparatus for manufacturing a lens as described above, the first step of the sliding sliding up the injection core so that the upper surface of the injection core abuts on the lower surface of the upper mold ; A second step of injecting the resin into the cavity from the outside through the injection core; A third step of blocking injection of the resin into the cavity; A fourth step of curing the resin to form the molding; And a fifth step of separating the molded product into the individual lenses.

The fifth step may include removing the upper mold; Taking out the molding from the cavity; Inserting the extracted molding into the cutting guide; Capping the molding inserted into the cutting guide; And sliding the cutter toward the molding side to separate the molding into the individual lenses.

The fifth step further includes heating the blade before sliding of the cutter.

The guide mold includes a discharge path for discharging the resin injected into the cavity to the outside, and the second step includes injecting the resin into the cavity, and residues of the resin injected into the cavity. The step of discharging to the outside through the discharge path is repeated a predetermined time.

The injection core has a lower injection space formed therein to allow the resin to be injected therefrom, and at least one injection hole formed at an upper side of the injection core connected to the injection space so that the resin is injected into the cavity. The third step includes the sliding step of the cavity portion to block the injection hole.

The third step includes the step of sliding up the cavity to block the discharge path.

According to the present invention, since the resin is injected at the center of the mold, it is possible to manufacture a lens with a uniform precision as a whole compared to the conventional side-end injection method. In addition, the cavity can be arranged in a honeycomb form to increase mold space utilization, thereby minimizing resin loss. In addition, since the lower mold is pressed in the direction of the upper mold after the resin is injected, there is an advantage of minimizing the lens error in response to the resin shrinkage in the curing step during the lens manufacturing. In addition, by inserting the lens molding in the cutting die and applying a method, it is easy to separate the molded article, it is possible to precise separation into individual lenses.

1 is a top plan view of a mold apparatus for manufacturing a lens according to an embodiment of the present invention;
2 is an internal cross-sectional view of a mold apparatus for manufacturing a lens according to an embodiment of the present invention;
3 is an external perspective view of a mold apparatus for manufacturing a lens according to an embodiment of the present invention;
4 is a flowchart illustrating a lens manufacturing method using a mold apparatus for manufacturing a lens in an embodiment of the present invention;
5a to 5e are views for explaining a lens manufacturing method according to an embodiment of the present invention,
6A and 6B are views for explaining a resin inflow passage,
7 is a view showing a lens molding taken out of a mold apparatus according to an embodiment of the present invention;
8 is an external perspective view of a cutting mold according to an embodiment of the present invention;
9 is a view showing a cutter of a cutting mold according to another embodiment of the present invention;
10 is a flowchart illustrating a lens cutting process according to an embodiment of the present invention; and
11A to 11D are diagrams for describing a lens cutting process according to an exemplary embodiment of the present invention.

The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component. The term "and / or" includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant description thereof will be omitted.

1 is a top plan view of a mold apparatus for manufacturing a lens according to an exemplary embodiment of the present invention, and FIGS. 2 and 3 are internal cross-sectional views and external perspective views, respectively.

1 to 3, the mold apparatus for manufacturing a lens according to the embodiment of the present invention includes an upper mold 100, a lower mold 200, and a guide mold 300.

The upper mold 100, the lower mold 200, and the guide mold 300 are manufacturing molds for polymerizing monomers or oligomers into lenses, and a cavity which is a lens polymerization space through bonding. (Cavity) 221 can be completed.

1 to 3, the cavity 221 is formed on the upper portion of the lower mold 200, but the cavity 221 may be formed on the upper mold 100 or may be formed on both molds.

At this time, the volume of the cavity 221 may be formed larger than the volume of the desired lens molding in consideration of the physical shrinkage rate by the elastic deformation of the mold.

The lower mold 200 includes an injection core 210 in the center portion and a cavity portion 220 disposed surrounding the injection core 210.

The injection core 210 and the cavity 220 have a columnar shape, and have a structure separated from each other to enable mutual sliding in the vertical direction as shown in FIGS. 5A and 5C. In addition, the cavity part 220 may be disposed such that polygonal cavities 221 may be in a honeycomb shape.

Accordingly, the cavity part 220 is formed of a polygonal column corresponding to the shape of the upper cross section of the cavity 221 to accommodate the upper cavity 221, and penetrates to correspond to the shape of the injection core 210 at the center thereof. It can have a gap.

In the present invention, since the cavity 221 is configured in a polygonal shape and arranged in a honeycomb form, the utilization of space is very high, and thus, a large number of lenses can be molded in the same space condition as compared with the conventional technology. In addition, unnecessary margins are minimized to reduce the loss of resin.

In the embodiment of FIGS. 1 to 3, the cavity 221 has a hexagonal cross section, and has a cup shape in which an inner diameter thereof increases toward an upper portion thereof, and a tip portion 222 is formed below the cavity 221. However, the structure of the cavity 221 is not limited thereto, and may be formed in various patterns according to the shape of the lens molding. In one embodiment, the upper cross section of the cavity 221 may be formed in a polygonal shape to have a honeycomb configuration, and the lower cross section of the cavity 221 may be formed in a circular shape.

In addition, in the embodiment of FIGS. 1 to 3, six cavities 221 are illustrated surrounding the injection core 210. However, if the cavity 221 is arranged in a honeycomb structure around the injection core 210, the number of the cavity 221 may be variously expanded and adjusted as necessary.

The guide mold 300 is formed to surround the lower mold 200. The upper mold 100 is inserted into the upper portion of the guide mold 300 to shield the upper portion of the cavity 221 in the guide mold 300. Alternatively, if the structure can shield the upper portion of the cavity 221 even if not inserted into the upper portion of the guide mold 300, various modifications of the upper mold 100 are possible.

In detail, the guide mold 300 is a tubular structure through which the upper and lower penetrates so as to accommodate the lower mold 200 therein, and the shape of the through section coincides with the cross section of the lower mold 200. In this case, the outer surface of the lower mold 200 and the inner surface of the guide mold 300 may be slightly spaced apart so that the lower mold 200 can be easily slid within the guide mold 300.

That is, due to the upper mold 100 of the upper portion, the lower mold 200 of the lower portion, and the guide mold 300 of the side surface, the cavity 221 space for forming the lens can be completed.

The upper mold 100 may be formed of a material having excellent light transmittance as well as light transmission. For example, the upper mold 100 may be formed of a transparent polymer material such as acrylic resin or polycarbonate or a glass material such as glass or quartz. In this case, the upper mold 100 may be formed of a light transmissive material on its entire surface, and only a portion corresponding to each cavity 221 may be formed of a light transmissive material.

The lower surface of the upper mold 100 may also have a shape corresponding to one surface of the lens molding like the tip part 222 in the lower mold.

The injection core 210 has an injection space 211 penetrated downwardly so that the resin can be injected from the lower side, and at least one injection hole 212 connected to the injection space 211 on the upper side of the injection core 210. ) May be formed.

Due to this structure, as shown in FIG. 5B, the resin injected through the injection space 211 of the injection core 210 is discharged through the injection hole 212, so that the resin can be injected into the cavity 221 space. .

In the present invention, the guide mold 300 may be formed to be higher or lower than the height of the lower mold 200, provided that only the space in which the lower mold 200 can slide in the guide mold 300 is secured.

Meanwhile, the lower mold 200 and the guide mold 300 may be formed of a general mold material such as a star box (Stavax).

Hereinafter, a lens manufacturing method using a mold apparatus according to an embodiment of the present invention will be described with reference to FIG. 4, and the configuration of the mold apparatus will be described in more detail.

Referring to FIG. 4, first, the upper mold 100, the lower mold 200, and the guide mold 300 are combined to complete a mold capable of forming a lens as shown in FIG. 2 (S1).

Next, as shown in FIG. 5A, the injection core 210 in the lower mold 200 is raised (S2). Since the injection core 210 is formed separately from the cavity portion 220, it is possible to lift only the injection core 210 separately from the cavity portion 220. In this case, the injection core 210 may slide upward so that the upper surface thereof is in contact with the lower surface of the upper mold 100, thereby preventing the resin from flowing out between the upper mold 100 and the injection core 210 and wasting. .

After raising the injection core 210 to the final height, the resin that is the raw material of the lens molding is injected (S3). In detail, as illustrated in FIG. 5B, the resin 400 is injected from the outside through the lower portion of the injection core 210, and then the resin 400 is introduced into the cavity 221 space through the injection space 211 and the injection hole 212. 400) is injected. To this end, when the mold is coupled in the step S1, the height h1 of the upper surface of the cavity 220 based on the lower surface of the upper mold 100 is the height of the injection hole 212 when the injection core 210 is raised ( lower than h2).

The resin 400 is injected through an external resin injection device (not shown), and since a general resin injection device is used, a detailed description thereof will be omitted.

On the other hand, when the resin 400 is injected, in order to solve the problem that the resin 400 is unevenly injected according to the position of the cavity 221, in the present invention in the state in which the resin 400 is first injected into the cavity 221 The injection of the resin 400 into the cavity 221 may be repeated for a predetermined time instead of stopping the injection of the resin 400. In this case, the resin 400 is uniformly distributed in the entire cavity 221 while the injection and the discharge are performed together, instead of simply performing the injection. Here, the discharge means not the discharge of all the resin 400 injected into the cavity 221, but means that the residue not normally injected into the cavity 221 is discharged.

To this end, the guide mold 300 is provided with a discharge path of the resin 400. Specifically, the guide mold 300 is a discharge passage 301 for discharging the resin 400 from the cavity 221 space and the discharged resin 400 is supplied back to the resin supply device (not shown) without unnecessary waste At least one outlet 302 to be utilized. In addition, the guide mold 300 may further include a discharge space 303 to temporarily accommodate the resin 400 in the discharge process to facilitate the discharge.

The discharge passage 301 may be continuously formed on the inner surface of the guide mold 300 as shown in FIG. 3, or may be formed intermittently along the inner surface of the guide mold 300.

According to the injection / discharge repeating as described above, in the present invention, regardless of the position of the cavity 221 with respect to the resin injection position, it is possible to manufacture a lens of uniform precision as a whole.

6A and 6B are views of the resin inflow passage 223 applicable to the present invention.

In another embodiment of the present invention, in order to further activate the inflow of the resin 400 into each cavity 221, a resin inflow passage 223 may be provided between each cavity 221 as shown in FIG. 6A. . When the cavity 221 has a concave shape, as shown in FIG. 6B, a problem in which resin inflow between the cavity 221 is blocked due to the step between the cavity 221 may occur. However, when the resin inflow passage 223 is formed as shown in FIG. 6A, the resin is smoothly introduced. In addition, in the case of FIG. 6B, since the cavity 221 has an angular structure, the stepped portion exists, so that it is not easy to discharge the air generated in the resin or the air introduced into the cavity 221 from the outside, so that the uniformity of the lens molding and Decreases the precision. However, as shown in FIG. 6A, when the resin inflow passage 223 is formed, bubbles and air are easily moved and discharged like the resin 400, thereby improving lens uniformity and precision.

In this case, the resin inflow passage 223 may be formed by uniformly cutting the upper step between the cavities 221, or may form a plurality of passages by partially cutting the upper step.

When the injection of the resin 400 is completed, as shown in FIG. 5C, the cavity 220 of the lower mold 200 is raised (S4). At this time, the cavity 220 is determined in consideration of the shrinkage of the resin 400 during photo curing, and the rising height may be variously changed according to the type of the resin 400 used and the lens molding environment. In addition, the cavity part 220 blocks the injection hole 212 and the discharge passage 301 through upward sliding, thereby injecting the resin 400 through the injection hole 212 and the resin 400 through the discharge passage 301. It will act as a valve to shut off the discharge. That is, the cavity part 220 moves the resin 400 injected into the cavity 221 in response to the resin 400 shrinkage in consideration of the shrinkage ratio of the resin 400 in the upper mold 100 direction. Pressurized by, it is possible to fundamentally eliminate the lens error that may occur during lens manufacturing. In addition, the cavity part 220 may simultaneously perform a function of blocking the injection hole 212 and the discharge passage 301 only by the upward sliding.

After the cavity 220 is raised to the set height, the resin 400 is photocured by irradiating light such as UV using a light irradiator (not shown) on the upper mold 100 (S5). ).

Next, in order to take out the lens molding 410 formed through photo curing as shown in FIG. 5D, after removing the upper mold 100 (S6), as shown in FIG. 5E, the adsorption pad P is illustrated. The lens molding 410 is taken out using (S7). At this time, since the extracted lens molding 410 is integrally formed except for the injection core 210, as shown in FIG. 7, a lens cutting process for separating into individual lenses is performed (S8).

To this end, the mold apparatus for manufacturing a lens according to the embodiment of the present invention further includes a cutting mold.

8 illustrates an example of a cutting mold 500 and includes a cutting guide 510, a cutter 520, and a cap 530.

The cutting guide 510 may be formed in a structure in which at least one side is open so that the lens molding 410 taken out after curing the light in the cavity 221 may be inserted and accommodated. That is, the inner surface of the cutting guide 510 may have a structure that is joined to the outer surface of the lens molding 410.

The cutter 520 may be disposed on the other side of the cutting guide 510 to slide in the vertical direction in the cutting guide 510. The cutter 520 may include a blade disposed to correspond to a cutting position of the lens molding 410, that is, between the cavities 221. Therefore, the cutter 520 may have a blade structure arranged in a honeycomb like the cavities 221. The cutter 520 may cut the lens molding 410 into individual lenses through a sliding operation.

9 is a view showing another embodiment of the cutting mold 500, the cutter 520 may be composed of only a honeycomb-shaped blade as shown in Figure 8, as shown in Figure 9 It may be composed of a blade 521 and a support plate 522 for supporting the blade 521 from below. When configured as shown in FIG. 9, it may be easy to lift the cutter 520 from the lower side during the sliding operation of the cutter 520. In this case, the support plate 522 may be formed to a size that is inserted into the cutting guide 510 so that the cutter 520 can easily slide in the cutting guide 510.

The cap 530 serves to shield the open cutting guide 510 when the lens molding 410 is inserted into the cutting guide 510. That is, the cap 530 may cap the lens molding 410 exposed in the cutting guide 510. Referring to the arrangement of the lens molding 410, the cutter 520, and the cap 530 in more detail, after the lens molding 410 is inserted, one side of the lens molding 410 has a cutter 520 and the other side has a cap ( 530 is disposed. Therefore, the cutter 520 may cut the lens molding 410 through an operation of vertically sliding toward the cap 530 at one side of the lens molding 410.

10 is a flowchart illustrating a lens cutting process using the cutting mold 500, and FIGS. 11A to 11D are diagrams for describing the lens cutting process. 11B to 11D are diagrams illustrating the operation of the cutting die 500 in cross-sectional form for easy description.

Referring to FIG. 10, first, the lens molding 410 is inserted into the cutting guide 510 as illustrated in FIG. 11A (S11).

When the insertion is completed, as shown in FIG. 11B, the upper portion of the cutting guide 510 is shielded through the cap 530 (S12) to cap the lens molding 410.

When the upper shielding is completed, the cutter 520 is raised as shown in FIG. 11C (S13). In this case, the cutter 520 may be upwardly slid to contact the lower surface of the cap 530 to completely cut the lens molding 410. In one embodiment, the cap 530 includes a fixture to be fixed to the cutting guide 510 to prevent the flow of the lens molding 410 when the cutter 520 is raised, or at the time of the sliding sliding of the cutter 520 It may be pressed from top to bottom through a separate pressing device.

The lens molding 410 is separated into individual lenses 411 through the upward sliding operation of the cutter 520, and is taken out after the cap 530 is removed as illustrated in FIG. 11D (S14) ( S15). In one embodiment, the lens 411 may be taken out using a suction pad as in the extraction of the lens molding 410, but the extraction method is not limited thereto, and various methods may be applied.

Meanwhile, in cutting the lens molding 410 through the upward sliding of the cutter 520, the method may further include heating a blade of the cutter 520 to facilitate cutting.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims It can be understood that

100: upper mold 200: lower mold
210: injection core 211: injection space
212: injection hole 220: cavity portion
221: cavity 222: tip portion
223: resin inflow passage 300: guide mold
301: discharge passage 302: discharge opening
303: discharge space 400: resin
410 lens molding 411 lens
500: cutting mold 510: cutting guide
520: cutter 521: blade
522: support plate 530: cap

Claims (18)

In the mold apparatus for lens manufacture which manufactures a molded object through light irradiation,
A lower mold including an injection core into which the molding forming resin is injected, and a cavity part surrounding the injection core and having a plurality of cavities formed therein for forming the molding thereon;
A guide mold having a vertical through structure accommodating the lower mold;
An upper mold of a light transmissive material disposed on the guide mold and shielding an upper portion of the cavity; And
A cutting mold for inserting the molding taken out by curing light in the cavity to separate the molding into individual lenses.
Mold apparatus for manufacturing a lens comprising a.
The method of claim 1,
And the injection core and the cavity portion are slid in the vertical direction in the guide mold, respectively.
3. The method of claim 2,
The cavity is arranged so that the upper cross section is formed in a polygonal shape of each cavity to form a honeycomb,
The cavity unit of claim 1, wherein the cavity is formed of a polygonal column corresponding to the upper cross-sectional shape of the cavities.
3. The method of claim 2,
The cutting mold,
A cutting guide having at least one side opened to insert the molding therein; And
A cutter disposed within the other side of the cutting guide and sliding in a vertical direction, the cutter including a blade disposed to correspond to each cavity;
Mold apparatus for manufacturing a lens comprising a.
5. The method of claim 4,
The cutting mold further comprises a cap for shielding one side of the cutting guide opened after the molding is inserted.
The method of claim 5,
And the cutter slides in the cap direction to separate the lens molding into the individual lenses.
3. The method of claim 2,
The injection core,
An injection space penetrating downward therein to allow the resin to be injected therefrom; And
At least one injection hole connected to the injection space and formed on an upper side of the injection core so that the resin is injected into the cavity
Mold apparatus for manufacturing a lens comprising a.
The method of claim 7, wherein
The injection core is slid upwardly such that its upper surface abuts against the lower surface of the upper mold,
And the resin is injected into the cavity via the injection space and the injection hole after the upward sliding is completed.
9. The method of claim 8,
The guide mold is a mold device for manufacturing a lens, characterized in that it comprises a discharge path for discharging the resin injected into the cavity to the outside.
9. The method of claim 8,
The cavity part of the mold manufacturing apparatus for manufacturing a lens, characterized in that the sliding block after the injection of the resin is completed to block the injection hole.
10. The method of claim 9,
And the cavity part slides upward after the injection of the resin is completed to block the discharge path.
The method of claim 1,
A mold apparatus for manufacturing a lens, wherein a resin inflow passage is formed between a plurality of the cavities.
In the lens manufacturing method using the mold apparatus for producing a lens of claim 4,
A first step of upwardly sliding the injection core such that an upper surface of the injection core abuts against a lower surface of the upper mold;
A second step of injecting the resin into the cavity from the outside through the injection core;
A third step of blocking injection of the resin into the cavity;
A fourth step of curing the resin to form the molding; And
A fifth step of separating the molding into the individual lenses
Lens manufacturing method using a mold apparatus for manufacturing a lens comprising a.
The method of claim 13,
In the fifth step,
Removing the upper mold;
Taking out the molding from the cavity;
Inserting the extracted molding into the cutting guide;
Capping the molding inserted into the cutting guide; And
Sliding the cutter toward the molding side to separate the molding into the individual lenses
Lens manufacturing method using a mold apparatus for manufacturing a lens comprising a.
15. The method of claim 14,
In the fifth step,
The method of manufacturing a lens using a mold apparatus for manufacturing a lens, further comprising heating the blade before sliding the cutter.
The method of claim 13,
The guide mold includes a discharge path for discharging the resin injected into the cavity to the outside,
The second step is a mold manufacturing apparatus for lens manufacturing, characterized in that for repeating the step of injecting the resin into the cavity, and the step of discharging the residue of the resin injected into the cavity to the outside through the discharge path for a predetermined time. Lens manufacturing method using.
The method of claim 13,
The injection core has a lower injection space formed therein to allow the resin to be injected therefrom, and at least one injection hole formed at an upper side of the injection core connected to the injection space so that the resin is injected into the cavity. Including,
The third step is a lens manufacturing method using a mold apparatus for manufacturing a lens, characterized in that the cavity portion is sliding up and down to block the injection hole.
17. The method of claim 16,
The third step is a lens manufacturing method using a mold apparatus for manufacturing a lens, characterized in that the cavity is sliding up and down to block the discharge path.

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