TWM504695U - Contact lenses shaping device - Google Patents

Description

Contact lens former

This creation is about a mold for producing lenses, especially a contact lens former that can improve production yield.

According to a conventional contact lens mold, as shown in FIGS. 7 and 8, the upper mold 30 and the lower mold 40 are disposed, and the upper mold 30 is disposed with a punch region 32 at the center of the first ring 31. The lower mold 40 is disposed such that the second ring piece 41 is provided with a concave mold region 42 in the center, so that the convex mold region 32 and the concave mold region 42 are enclosed into the molding cavity B of the contact lens, so that the contact lens polymer material is heated or Curing and solidification molding, wherein the polymer material generates a volatile gas for curing during heating or illumination, and the first and second ring sheets 31 (41) of the upper and lower molds 30 (40) The peripheral edges are respectively provided with three corresponding convex portions 33 (43), and then subjected to thermocompression fusion by a fusion device, so that the bottom end of the convex portion 33 of the first ring piece 31 contacts the upper end surface of the second ring piece 42, and The lower mold 30 (40) is fused and positioned together to achieve the combination of the upper and lower molds 30 (40). However, it is not difficult to find out that the above-mentioned conventional structure has some shortcomings, and the main reasons are as follows: Conventionally, the lower mold 30 (40) is fixed only by the three-point convex portion 33 (43), so that the hot pressing process easily generates the upper and lower molds 30 (40). The deflection causes the molding cavity B to not properly accommodate the polymeric material, so that the contact lens is easy to form a waste product, and the upper and lower molds 30 (40) are only formed by the convex portion 33 (43), and have no pressure. The effect of the tight die region 42 and the punch region 42 is such that if the gap between the upper and lower molds 30 (40) when the mold is produced is too large or too small, or the gap is enlarged after the contact lens is repeatedly formed, the upper portion The lower mold 30 (40) can not adjust the gap between them in a timely manner, so when the finished product is bad, the mold can only be scrapped directly, so that there is a lack of compatibility and durability.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the author has finally achieved a practical and practical creation.

The technical problem to be solved by the present invention is to provide a contact lens former for the above-mentioned drawbacks existing in the prior art.

An upper mold is formed with a convex body at the center, and a first ring portion is formed on the outer periphery of the convex body, and the upper mold is formed with an upper curved surface at the top end of the outer surface of the convex body, and the peripheral edge of the upper curved surface is convexly formed. a first ring, the protrusion is annularly arranged with a plurality of ridges at an outer surface between the first ring portion and the first ring, and the ridges are parallel to each other by the first ring end The first ring end is arranged in a straight direction, and the rib is formed with a guiding inclined surface toward the upper forming curved end, the lower mold is formed with a concave body at the center, and a second ring portion is formed at the periphery of the concave body, and The lower mold is formed with a lower forming curved surface at the top end of the concave inner surface, and a second loop is protruded from the periphery of the lower forming curved surface, and the upper mold is placed into the concave body of the lower mold by the convex body, and is 1. The sealing of the second ring allows the upper and lower forming arc surfaces to form a lens forming space, and the convex strip of the upper mold gradually presses the concave body of the lower mold to form a fixed body, and the concave body is fixed. a sloped surface is formed at the inner surface between the second ring portion and the second ring portion And the inclined surface is gradually enlarged from the second ring to the second ring portion, and is pressed by the inclined portion of the lower mold to provide the convex strip of the upper mold, thereby forming a function of gradually pressing and fixing, and the concave body is in the second ring. A guide surface is formed between the portion and the inclined surface, and the guide surface is gradually enlarged from the inclined portion toward the second ring portion, and the guide surface of the lower mold is matched with the guide inclined surface of the convex strip to make the convex body of the upper mold It is easy to insert the concave body of the lower mold.

The first main purpose of the creation is that the ridge will gradually press the concave surface of the lower mold by the guiding inclined surface, and form the upper and lower through the ridge after the first ring completely resists the second ring. The extrusion combination of the mold not only achieves the effect of stable combination, but also maintains a constant molding angle of the lens molding space through the gradual limitation of the ridges, thereby avoiding the waste generated by the displacement or deflection of the upper and lower molds. Improve the yield of finished products.

The second main purpose of the present invention is that the convex body of the upper mold is annularly arranged with a plurality of ridges at the outer surface between the first ring portion and the first ring portion, and the concave body of the lower mold is at the second a sloped surface is formed at an inner surface between the ring portion and the second ring, and if the upper and lower molds have a matching gap that is too large or too small during molding, or the gap is enlarged after the contact lens is repeatedly formed, the upper portion The mold can be used to adjust the position of the inclined surface by the ridge to form a pitch adjustment, thereby adjusting to a desired forming angle, thereby improving the fit and durability.

The third main purpose of the present invention is that the guide bevel of the ridge cooperates with the guide surface of the lower mold to form a dodge, so that the ridge can be easily slid into the concave body along the guide surface along the guide surface, thereby having an easy alignment combination. The effect.

Other objects, advantages and novel features of the present invention will become more apparent from the detailed description and the accompanying drawings.

[this creation]

10‧‧‧Upper mold

11‧‧ ‧ convex

111‧‧‧Upper forming curved surface

112‧‧‧First ring

12‧‧‧ First Ring

13‧‧ ‧ ribs

131‧‧‧Bevel

20‧‧‧ Lower mold

21‧‧‧ concave body

211‧‧‧ under molding surface

212‧‧‧second ring

213‧‧‧Bevel

214‧‧‧guide angle

22‧‧‧ Second Ring

A‧‧‧ lens molding space

[study]

30‧‧‧上模

31‧‧‧First ring

32‧‧‧ Punch area

40‧‧‧下模

41‧‧‧second ring

42‧‧‧ die area

33(43)‧‧‧ convex

B‧‧‧ molding cavity

Figure 1 is a perspective cross-sectional view of the present creation.

Figure 2 is a three-dimensional exploded view of the creation (1).

Figure 3 is a three-dimensional exploded view of the creation (2).

Figure 4 is a cross-sectional exploded view of the creation.

Figure 5 is a schematic diagram of the state of use of the present creation.

Fig. 6 is a cross-sectional view showing the position of the line at the line A-A of Fig. 5.

Figure 7 is a perspective view of a conventional one.

Figure 8 is a cross-sectional view of the prior art.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, please follow the following [simplified description of the drawings] as follows: First, please refer to Figure 1, Figure 2 and Section 3. As shown in the figure, a contact lens former includes: an upper mold 10 and a lower mold 20, an upper mold 10 is formed with a convex body 11 at the center, and a first ring portion is formed at the periphery of the convex body 11. 12, the upper mold 10 is formed with an upper forming curved surface 111 at the top end of the outer surface of the convex body 11, and a first ring 112 is protruded from the periphery of the upper forming curved surface 111, and the convex body 11 is at the first ring. A plurality of ribs 13 are annularly arranged at an outer surface between the portion 12 and the first ring 112, and the ribs 13 are parallel to each other and are straight from the end of the first ring portion 12 toward the end of the first ring portion 112. Arranging, the ribs 13 are formed with a guiding surface 131 toward the upper forming curved surface 111. The lower mold 20 is formed with a concave body 21 at the center, and a second ring portion 22 is formed at the outer periphery of the concave body 21. The lower mold 20 is formed with a lower molding curved surface 211 at the top end of the inner surface of the concave body 21, and the lower molding curved surface 21 A second loop 212 is protruded from the periphery of the first mold, and the upper mold 10 is placed in the concave body 21 of the lower mold 20 by the convex body 11 and is composed of the first and second loops. The sealing of 112 (212) allows the upper and lower forming curved surfaces 111 (211) to constitute the lens forming space A, and is further formed by the ridges 13 of the upper mold 10 gradually pressing the concave body 21 of the lower mold 20 with the inclined inclined surface 131. Fixedly, the concave body 21 is formed with a slope portion 213 at an inner surface between the second ring portion 22 and the second ring 212, and the slope portion 213 is gradually formed by the second ring 212 toward the second ring portion 22. Expanded, and the ribs 13 of the upper mold 10 are pressed by the inclined surface portion 213 of the lower mold 20 to form a function of gradually pressing and fixing, and the concave body 21 forms a guide between the second ring portion 22 and the inclined surface portion 213. The angled surface 214 is gradually enlarged by the inclined surface portion 213 toward the second ring portion 22, and the guiding surface 214 of the lower mold 20 is engaged with the guiding inclined surface 131 of the protruding strip 13 to allow the convex portion of the upper mold 10 to be convex. 11 is easy to insert into the concave body 21 of the lower mold 20. With the above structure, the upper and lower molds 10 (20) can be stably combined to improve the yield of the production process.

For the actual use, please view it from the second figure to the sixth figure. First, the polymer material is injected into the curved surface 211 under the lower mold 20, and the convex body 11 of the upper mold 10 is placed. In the concave body 21 of the lower mold 20, pressure is applied to the first ring portion 12 and the second ring portion 22 to press the upper and lower molds 10 (20) against each other, whereby the first ring 112 of the convex body 11 is utilized. The second loop 212 of the matching concave body 21 forms a seal of the lens forming space A, and the polymer material is pressed between the upper forming curved surface 111 and the lower forming curved surface 211, and the curing of the polymer material is formed by heating. Further, the contact lens is molded. When the upper mold 10 is to be placed in the lower mold 20, the guide inclined surface 131 of the ridge 13 cooperates with the guide surface 214 of the lower mold 20 to form a dodge, so that the ridge 13 can be easily guided by the guide inclined surface 131. The guide surface 214 slides into the concave body 21, thereby having the effect of easy alignment and assembly. When the upper mold 10 is further pressed into the lower mold 20, the ridge 13 will be gradually pressed by the guide inclined surface 131. The inner surface of the concave body 21 of the mold 20 is formed by the convex strip 13 after the first loop 112 completely abuts against the second loop 212. The pressing combination of the lower mold 10 (20) can not only achieve the effect of stable combination, but also maintain the constant molding angle of the lens forming space A through the gradual limitation of the ribs 13, thereby avoiding the upper and lower molds 10 (20). The displacement or deflection produces waste products that increase the yield of the finished product. It is further explained that the convex body 11 of the upper mold 10 is annularly arranged with a plurality of ribs 13 at the outer surface between the first ring portion 12 and the first ring portion 112, and the ribs 13 are all oriented upwardly. The face 111 is formed with a guide bevel 131, and the recess 21 of the lower die 20 is formed with a slope portion 213 at an inner surface between the second ring portion 22 and the second ring 212, and the slope portion 213 is second The ring 212 is gradually enlarged toward the second ring portion 22 if the upper and lower molds 10 (20) are present during molding. When the matching gap is too large or too small, or the gap is enlarged after the contact lens is repeatedly formed, the upper mold 10 can adjust the position of the inclined portion 213 by the ribs 13 to form a pitch adjustment, thereby adjusting to a desired forming angle.俾 to improve its fit and durability.

In summary, this creation has indeed achieved a breakthrough structural design, and has improved new content, while at the same time achieving industrial use and progress, and this creation is not seen in any publication, but also novel, when In accordance with the provisions of the relevant laws and regulations of the Patent Law, a new type of patent application is filed according to law, and the examination authority of the bureau is required to grant legal patent rights.

Only the above-mentioned ones are only preferred embodiments of the present invention, and the scope of the creation of the present invention cannot be limited thereto; that is, the equal changes and modifications made by the majority of the patent application scope of the present invention should still belong to the present invention. Within the scope of the patent.

10‧‧‧Upper mold

11‧‧ ‧ convex

111‧‧‧Upper forming curved surface

112‧‧‧First ring

12‧‧‧ First Ring

13‧‧ ‧ ribs

131‧‧‧Bevel

20‧‧‧ Lower mold

21‧‧‧ concave body

22‧‧‧ Second Ring

Claims (3)

A contact lens former includes: an upper mold having a convex body formed at a center thereof, and a first ring portion formed on a periphery of the convex body, and the upper mold is formed at an upper end of the convex outer surface Forming a curved surface, and a first ring is protruded from a periphery of the upper curved surface, and the convex body is annularly arranged with a plurality of ridges at an outer surface between the first ring portion and the first ring, and The ridges are parallel to each other, and the first ring portion ends are arranged in a straight direction toward the first ring end, and the ribs are formed with a lead inclined surface toward the upper forming curved end; and the lower mold is at the center. Forming a concave body, and forming a second ring portion on the outer periphery of the concave body, the lower mold is formed with a lower forming curved surface at the top end of the concave inner surface, and a second annular ring is protruded from the periphery of the lower forming curved surface. And the upper mold is placed into the concave body of the lower mold by the convex body, and the sealing of the first and second loops allows the upper and lower forming curved surfaces to form the lens forming space, and the convex strip of the upper mold is used to guide the inclined surface. Gradually squeezing the concave body of the lower mold to form the upper Die stabilizing composition, serve to increase the yield of the production process. The contact lens former according to claim 1, wherein the concave body is formed with a slope portion at an inner surface between the second ring portion and the second ring portion, and the slope portion is formed by the second ring The ring is gradually enlarged toward the second ring portion, and is provided by the slanting surface of the lower mold to press the ridge of the upper mold to form a function of gradually pressing and fixing. The contact lens former according to claim 2, wherein the concave body forms a guide surface between the second ring portion and the inclined surface portion, and the guide surface is from the inclined portion to the second ring portion. Gradually expanding, and the guide surface of the lower mold is matched with the guide inclined surface of the convex strip, so that the convex body of the upper mold is easily placed into the concave body of the lower mold.