Impressing mold core device and contact lens manufactured by same
By forming a rough surface on the mold kernel device of the contact lens mold, the problem of uniform distribution and insufficient adhesion caused by the smooth surface of the existing mold is solved, better mold release control and color ink adhesion effect are achieved, and the manufacturing quality of contact lenses is improved.
Patent Information
- Application Number
- CN202421290513.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-06
AI Technical Summary
The smooth surface of existing contact lens molds leads to difficulty in uniform distribution of materials, resulting in the inability to fix the contact lenses when demolding, and the adhesion between the mold and the color printing ink is weak, increasing the difficulty of adhesion of color ink.
An imprint mold kernel device is designed to improve the demolding control of contact lenses and the adhesion of colored inks by forming a rough surface between the first mold kernel and the second mold kernel of the mold.
Through the design of the rough surface, the adhesion and control of contact lenses during demolding are improved, the adhesion of colored inks is enhanced, and the yield and quality of manufacturing contact lenses are improved.
Smart Images
Figure CN222628492U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a mold, and in particular to an impression mold core device which is convenient for demoulding contact lenses and the contact lenses manufactured by the same. Background Art
[0002] It is known that molds are used to manufacture products of specific shapes and sizes. They are widely used in the fields of machinery, electronics and optics. In the field of optics, for example, molds for contact lenses are one of the common types of molds. The molds for contact lenses play a vital role in the manufacturing process because the design of the mold not only needs to consider different visual acuity levels to adjust the required curved surface shape, but also needs to adjust the size of the mold according to the size and shape of the user's eyeball. Therefore, if you want to ensure the comfort, quality and vision correction effect of contact lenses, the molds for contact lenses play a key role.
[0003] However, in order to achieve a comfortable wearing experience, existing contact lenses are usually designed with smooth surfaces on both sides. However, during the manufacturing process of such contact lenses, the smooth surface makes it difficult to evenly distribute the material, resulting in the contact lenses being unable to be fixed to the upper mold or the lower mold during demolding. In addition, the smooth surface will lead to weak adhesion between the mold and the color printing ink, thereby increasing the difficulty of color ink adhesion.
[0004] The above are the areas where the existing molds for making contact lenses still need to be improved. The creator of the present invention has spared no effort to conceive an imprinting mold core device and a contact lens made therefrom to improve the above problems. Utility Model Content
[0005] In view of this, an object of the present invention is to provide an embossing mold core device, by forming a rough surface on the embossing mold core device, it is helpful to control the demoulding direction of the contact lens.
[0006] Another object of the utility model is to provide a contact lens manufactured by an embossing mold core device, wherein the contact lens manufactured by the embossing mold core device is beneficial to improving the adhesion of color ink.
[0007] In order to achieve the above-mentioned purpose, the utility model provides an imprinting mold core device, including a first mold core and a second mold core that can be matched, wherein the first mold core has a protrusion; the second mold core has a mold cavity, and the mold cavity is for the protrusion to be embedded. When the first mold core and the second mold core are matched, the protrusion is embedded in the mold cavity, and a mold cavity is formed between the protrusion and the mold cavity, and the mold cavity is in the shape of a contact lens; wherein a rough surface is formed around the surface of the mold cavity and / or around the surface of the protrusion.
[0008] In one embodiment, the first mold core and the second mold core have a central axis; the protrusion is a spherical block, and the mold cavity is a spherical groove; the central axis passes through the center of the protrusion, and the central axis passes through the center of the mold cavity.
[0009] In one embodiment, the rough surface is formed around the surface of the bump, and a smooth surface is provided in the middle of the surface of the bump; the bump is projected onto a virtual projection plane perpendicular to the central axis to form a projection; the projection defines a first area corresponding to the smooth surface, and the projection defines a second area corresponding to the rough surface, and the second area surrounds the first area.
[0010] In one embodiment, the rough surface is formed around the mold cavity surface, and the middle of the mold cavity surface has a smooth surface; the mold cavity is projected onto a virtual projection plane perpendicular to the central axis to form a projection; the projection defines a first area corresponding to the smooth surface, and the projection defines a second area corresponding to the rough surface, and the second area surrounds the first area.
[0011] In one embodiment, the longitudinal length of the first region is a first length, the longitudinal length of one of the opposite sides of the second region is a second length, and the ratio of the first length to the second length is between 0.05 and 9.
[0012] In one embodiment, the first length is between 1 mm and 9 mm.
[0013] In one embodiment, the second length is between 1 mm and 15 mm.
[0014] In one embodiment, the centerline average roughness of the rough surface is between 0.1 and 8.0.
[0015] In one embodiment, the centerline average roughness of the second region is greater than the centerline average roughness of the first region.
[0016] In one embodiment, the rough surface is formed around the surface of the bump and / or the mold cavity, and the middle of the surface of the bump and / or the mold cavity has a smooth surface, and a smooth portion is formed around the portion of the surface of the bump and / or the mold cavity between the rough surface and the outer periphery of the bump and / or the mold cavity; the bump and / or the mold cavity is projected onto a virtual projection plane perpendicular to the central axis to form a projection; the projection defines a first area corresponding to the smooth surface, the projection defines a fifth area corresponding to the rough surface, and the projection defines a sixth area corresponding to the smooth portion.
[0017] In one embodiment, the rough surface includes a plurality of rough portions, and the plurality of rough portions are formed on the surface of the bump and / or the mold cavity in a concentric manner and are arranged at intervals. The outer sides of the plurality of rough portions are respectively surrounded by a plurality of smooth portions, and the middle of the surface of the bump and / or the mold cavity has a smooth surface; the bump and / or the mold cavity is projected on a virtual projection plane perpendicular to the central axis to form a projection; the projection defines a first area corresponding to the smooth surface, the projection defines a fifth area corresponding to each of the rough portions, and the projection defines a sixth area corresponding to each of the smooth portions.
[0018] In one embodiment, the longitudinal length of the first zone is a first length, the longitudinal length of one of the two opposite sides of the fifth zone is a fifth length, and the ratio of the first length to the fifth length is between 0.05 and 9; the longitudinal length of one of the two opposite sides of the sixth zone is a sixth length, and the ratio of the sixth length to the fifth length is between 0.05 and 9.
[0019] The utility model also provides a contact lens manufactured by an embossing mold device, which has a contact lens body, wherein the contact lens body includes a middle portion and a peripheral portion surrounding the middle portion, and the surfaces on opposite sides of the contact lens body have an outer surface and an inner surface, wherein an embossed rough surface is formed on the outer surface and / or the inner surface of the peripheral portion.
[0020] In one embodiment, the contact lens body has an optical axis; the contact lens body is projected onto a virtual projection plane perpendicular to the optical axis to form a projection; the projection defines a third zone corresponding to the middle portion, and the projection defines a fourth zone corresponding to the embossed rough surface, and the fourth zone surrounds the third zone; the longitudinal length of the third zone is a third length, and the longitudinal length of one of the opposite sides of the fourth zone is a fourth length, and the ratio of the third length to the fourth length is between 0.05 and 9.
[0021] In one embodiment, the peripheral portion includes a first ring segment and a second ring segment from the inside to the outside, and an embossed rough segment is formed on the outer surface and / or the inner surface of the first ring segment, and an embossed smooth segment is formed on the outer surface and / or the inner surface of the second ring segment.
[0022] In one embodiment, the peripheral portion has a plurality of first ring segments and a plurality of second ring segments arranged alternately from the inside to the outside, and an embossed rough segment is formed on the outer surface and / or the inner surface of each of the first ring segments, and an embossed smooth segment is formed on the outer surface and / or the inner surface of each of the second ring segments.
[0023] In one embodiment, the contact lens body has an optical axis; the contact lens body is projected onto a virtual projection plane perpendicular to the optical axis to form a projection; the projection defines a third zone corresponding to the middle portion, the projection defines a seventh zone corresponding to at least one of the embossed rough segments, and the projection defines an eighth zone corresponding to at least one of the embossed smooth segments, and the outer side of the seventh zone surrounds the eighth zone; the longitudinal length of the third zone is a third length, the longitudinal length of one of the two opposite sides of the seventh zone is a seventh length, and the ratio of the third length to the seventh length is between 0.05 and 9; the longitudinal length of one of the two opposite sides of the eighth zone is an eighth length, and the ratio of the eighth length to the seventh length is between 0.05 and 9.
[0024] The effect of the utility model is that the rough surface is formed around the surface of the mold cavity and / or around the surface of the convex block, and the setting of the rough surface helps to improve the adhesion between the mold and the injection material, so that the contact lens can better control the demolding direction when demolding, so as to improve the yield and quality of manufacturing contact lenses. In addition, the contact lens manufactured by the stamping mold core device also has the stamped rough surface, which helps to increase the contact area between the contact lens and the color ink when the contact lens is sprayed with the color ink, thereby enhancing the adhesion of the color ink. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1A It is a schematic diagram of the stamping mold core device of the first preferred embodiment of the utility model.
[0026] Figure 1B for Figure 1A A local enlarged schematic diagram of the area marked with 1B.
[0027] Figure 2 It is a projection schematic diagram of the stamping mold core device of the first preferred embodiment of the utility model.
[0028] Figure 3A for Figure 1A Schematic diagram of the first mold core and the second mold core being matched.
[0029] Figure 3B for Figure 3A A local enlarged schematic diagram of the area marked 3B.
[0030] Figure 4A This is a schematic diagram of a contact lens manufactured by the embossing mold device according to the first preferred embodiment of the utility model.
[0031] Figure 4B for Figure 4A A partial enlarged schematic diagram of the area marked with 4B.
[0032] Figure 5This is a schematic projection diagram of a contact lens manufactured by the embossing mold device according to the first preferred embodiment of the utility model.
[0033] Fig. 6A It is a schematic diagram of an embossing mold core device according to a second preferred embodiment of the utility model.
[0034] Figure 6B for Fig. 6A A partial enlarged schematic diagram of the area marked with 6B.
[0035] Fig. 7A This is a schematic diagram of a contact lens manufactured by the embossing mold device according to the second preferred embodiment of the utility model.
[0036] Figure 7B for Fig. 7A A partial enlarged schematic diagram of the area marked with 7B.
[0037] Fig. 8A It is a schematic diagram of an embossing mold core device according to a third preferred embodiment of the utility model.
[0038] Figure 8B for Fig. 8A A partial enlarged schematic diagram of the area marked with 8B.
[0039] Figure 8C for Fig. 8A A partial enlarged schematic diagram of the area marked with 8C.
[0040] Fig. 9A This is a schematic diagram of a contact lens manufactured by the embossing mold device according to the third preferred embodiment of the utility model.
[0041] Fig. 9B for Fig. 9A A partial enlarged schematic diagram of the area marked 9B.
[0042] Fig. 10A It is a schematic diagram of an embossing mold core device according to a fourth preferred embodiment of the utility model.
[0043] Fig. 10B for Fig. 10A A partial enlarged schematic diagram of the area marked with 10B.
[0044] Fig.11 It is a projection schematic diagram of the stamping mold core device of the fourth preferred embodiment of the utility model.
[0045] Fig. 12A This is a schematic diagram of a contact lens manufactured by the embossing mold device according to the fourth preferred embodiment of the utility model.
[0046] Fig. 12B for Fig. 12A A partial enlarged schematic diagram of the area marked with 12B.
[0047] Fig.13 This is a schematic projection diagram of a contact lens manufactured by the embossing mold device according to the fourth preferred embodiment of the utility model.
[0048] Fig.14A It is a schematic diagram of an embossing mold core device according to the fifth preferred embodiment of the utility model.
[0049] Fig. 14B for Fig.14A A partial enlarged schematic diagram of the area marked with 14B.
[0050] Fig.15 It is a projection diagram of the stamping mold device of the fifth preferred embodiment of the utility model.
[0051] Fig.16A This is a schematic diagram of a contact lens manufactured by the embossing mold device according to the fifth preferred embodiment of the utility model.
[0052] Fig. 16B for Fig.16A A partial enlarged schematic diagram of the area marked with 16B.
[0053] Fig.17 This is a projection diagram of a contact lens manufactured by the embossing mold device according to the fifth preferred embodiment of the utility model.
[0054] Description of reference numerals:
[0055] 100, 100', 100", 300, 300': embossing device
[0056] 10: The first model
[0057] 12: Bump
[0058] 20: Second Model
[0059] 22: Mold cavity
[0060] 30: Cavity
[0061] 40: Rough surface
[0062] 42: Rough part
[0063] 50: Smooth surface
[0064] 60: Embossed rough surface
[0065] 70: Smooth part
[0066] 200, 200', 200", 400, 400': Contact lenses made with the impression mold device
[0067] 210: Contact lens body
[0068] 212: Outside
[0069] 214: Inside
[0070] 216: Middle
[0071] 217: Peripheral
[0072] 218: First Ring
[0073] 218a: embossed rough section
[0074] 219: Second Ring
[0075] 219a: embossed smooth section
[0076] D1: First length
[0077] D2: Second length
[0078] D3: Third length
[0079] D4: Fourth length
[0080] D5: Fifth Length
[0081] D6: Sixth Length
[0082] D7: Seventh Length
[0083] D8: Eighth Length
[0084] L1: Center axis
[0085] L2: Optical axis
[0086] R1: Zone 1
[0087] R2: Second Zone
[0088] R3: The third zone
[0089] R4: The fourth zone
[0090] R5: Fifth Zone
[0091] R6: District 6
[0092] R7: District 7
[0093] R8: District 8
[0094] S1, S1', S1", S3, S3': projection surface
[0095] P1, P1', P1", P3, P3': Projection
[0096] S2, S2', S2", S4, S4': projection surface
[0097] P2, P2', P2", P4, P4': Projection DETAILED DESCRIPTION
[0098] In order to more clearly illustrate the present invention, a preferred embodiment is given below with reference to the accompanying drawings. Figures 1A to 3B FIG. 1 is a stamping mold core device 100 according to a first preferred embodiment of the present invention, wherein the stamping mold core device 100 comprises a first mold core 10 and a second mold core 20 that can be matched.
[0099] See also Figure 3A and Figure 3B As shown, the first mold core 10 has a protrusion 12, which is a spherical block; the second mold core 20 has a mold cavity 22, which is a spherical groove, and the mold cavity 22 is for the protrusion 12 to be embedded. When the first mold core 10 and the second mold core 20 are matched, the protrusion 12 is embedded in the mold cavity 22, and a mold cavity 30 is formed between the protrusion 12 and the mold cavity 22, and the mold cavity 30 is in the shape of a contact lens. By injecting a curable polymer solution into the mold cavity 30 between the first mold core 10 and the second mold core 20, the polymer solution is cured in the mold cavity 30 to form a contact lens, wherein the polymer has the characteristics of both light transmittance and water content, such as polypropylene (PP) material.
[0100] See also Figure 1A and Figure 1B As shown, a rough surface 40 is formed around the surface of the protrusion 12 of the first mold core 10, and a smooth surface 50 is formed in the middle of the surface of the protrusion 12, while the surface of the mold cavity 22 of the second mold core 20 is smooth; wherein the centerline average roughness (Ra) of the rough surface 40 is between 0.1 and 8.0, so that the centerline average roughness (Ra) of the rough surface 40 is greater than the centerline average roughness (Ra) of the smooth surface 50. Please refer to Figure 3A and Figure 3B As shown, by forming the rough surface 40 around the surface of the bump 12 of the first mold core 10, after the polymer solution in the mold cavity 30 is solidified into a contact lens, the stamping mold core device 100 allows the polymer to be fixed to the first mold core 10 when the mold is opened, that is, when the first mold core 10 and the second mold core 20 are separated, and when demolding, the design of the rough surface 40 improves the adhesion between the surface of the bump 12 and the solidified polymer, so that the demolding direction of the contact lens can be controlled when demolding, thereby improving the yield and quality of manufacturing contact lenses.
[0101] The first mold core 10 and the second mold core 20 have a central axis L1, and the central axis L1 passes through the center of the protrusion 12, and the central axis L1 also passes through the center of the mold cavity 22; Figure 1A , Figure 2 As shown, when the projection 12 is projected onto a virtual projection plane S1 perpendicular to the central axis L1 to form a projection P1, the projection P1 defines a first region R1 corresponding to the smooth surface 50, and the projection P1 defines a second region R2 corresponding to the rough surface 40, such that the second region R2 surrounds the first region R1 (as shown in FIG. Figure 2 The longitudinal length of the first region R1 is a first length D1, the longitudinal length of one of the opposite sides of the second region R2 is a second length D2, and the ratio D1 / D2 of the first length D1 to the second length D2 is between 0.05 and 9. In this embodiment, when the first length D1 of the first region R1 is between 1 mm and 9 mm, and the second length D2 of the second region R2 is between 1 mm and 15 mm, the adhesion between the contact lens of the cured polymer and the surface of the bump 12 can be better improved, so that the contact lens can better control the demolding direction when demolding.
[0102] See also FIG. 4A to FIG. 5 As shown, it is a contact lens 200 manufactured by the stamping mold device of the first preferred embodiment of the utility model, wherein the contact lens manufactured by the stamping mold device 100 has a contact lens body 210, and the contact lens body 210 is formed by injecting a high molecular polymer solution into the mold cavity 30 and curing it; the surfaces on the opposite sides of the contact lens body 210 have an outer surface 212 and an inner surface 214, the outer surface 212 is the surface in contact with the mold cavity 22 of the stamping mold device 100, and the inner surface 214 is the surface in contact with the protrusion 12 of the stamping mold device 100; the contact lens body 210 includes a middle portion 216 and a peripheral portion 217 surrounding the middle portion 216, wherein an embossed rough surface 60 (such as Figure 4B The embossed rough surface 60 is formed by the rough surface 40 after the polymer solution is injected into the embossing mold device 100 and solidified. Based on the design of forming the embossed rough surface 60 on the inner surface 214 of the contact lens body 210, the contact area between the contact lens body 210 and the printed color ink can be increased, thereby enhancing the adhesion of the color ink to the peripheral portion 217 of the contact lens body 210.
[0103] The contact lens body 210 has an optical axis L2, and the optical axis L2 passes through the center of the outer surface 212 and the inner surface 214 of the contact lens body 210; see Figure 4A , Figure 5 As shown, when the contact lens body 210 is projected onto a virtual projection plane S2 perpendicular to the optical axis to form a projection P2, a third region R3 is defined in the projection P2 corresponding to the middle portion 216, and a fourth region R4 is defined in the projection P2 corresponding to the embossed rough surface 60. The fourth region R4 surrounds the third region R3 (as shown in FIG. Figure 5 As shown); the longitudinal length of the third region R3 is a third length D3, and the longitudinal length of one of the opposite sides of the fourth region R4 is a fourth length D4. In this embodiment, when the ratio D3 / D4 of the third length D3 to the fourth length D4 is between 0.05 and 9, the embossed rough surface 60 can not only better improve the adhesion between the contact lens body 210 and the surface of the bump 12, but also increase the contact area between the contact lens body 210 of the cured polymer and the printed color ink to enhance the adhesion effect of the color ink, thereby improving the yield and quality of manufacturing color contact lenses.
[0104] See also Fig. 6A and Figure 6B The figure shows a stamping mold core device 100' of the second preferred embodiment of the utility model. The difference between the second preferred embodiment and the first preferred embodiment is the location of the rough surface 40. The other parts are the same as the first preferred embodiment. The structural changes of the stamping mold core device 100' of the second preferred embodiment and the stamping mold core device 100 of the first preferred embodiment are described in detail below. The difference between the two is that in the second preferred embodiment, the rough surface 40 is formed around the surface of the mold cavity 22 of the second mold core 20.
[0105] In the second preferred embodiment, the rough surface 40 is formed around the surface of the mold cavity 22, and a smooth surface 50 is provided in the middle of the surface of the mold cavity 22, while the surfaces of the protrusions 12 of the first mold core 10 are all smooth; wherein the centerline average roughness (Ra) of the rough surface 40 is between 0.1 and 8.0, so that the centerline average roughness (Ra) of the rough surface 40 is greater than the centerline average roughness (Ra) of the smooth surface 50. By forming the rough surface 40 around the surface of the mold cavity 22 of the second mold core 20, after the polymer solution in the mold cavity 30 is solidified into a contact lens, the stamping mold core device 100 allows the polymer to be fixed to the second mold core 20 when the mold is opened, that is, when the first mold core 10 and the second mold core 20 are separated, and when demolding, the design of the rough surface 40 can improve the adhesion between the solidified polymer and the surface of the mold cavity 22, so that the demolding direction of the contact lens can be better controlled when demolding, thereby improving the yield and quality of manufacturing contact lenses.
[0106] The first mold core 10 and the second mold core 20 have a central axis L1, and the central axis L1 passes through the center of the protrusion 12, and the central axis L1 also passes through the center of the mold cavity 22; when the protrusion 12 is projected onto a virtual projection plane S1' perpendicular to the central axis to form a projection P1', the projection P1' defines a first area R1 corresponding to the smooth surface 50, and the projection P1' defines a second area R2 corresponding to the rough surface 40, so that the second area R2 surrounds the first area R1; the longitudinal length of the first area R1 is a first length D1, and the longitudinal length of one of the opposite sides of the second area R2 is a second length D2, and the ratio D1 / D2 of the first length D1 to the second length D2 is between 0.05 and 9. In this embodiment, when the first length D1 of the first zone R1 is between 1 mm and 9 mm, and the second length D2 of the second zone R2 is between 1 mm and 15 mm, the adhesion between the polymer contact lens and the surface of the mold cavity 22 can be better improved, so that the demolding direction of the contact lens can be better controlled during demolding.
[0107] See also Fig. 7A and Figure 7BAs shown, it is a contact lens 200' manufactured by the stamping mold device of the second preferred embodiment of the utility model, wherein the contact lens 200' manufactured by the stamping mold device 100' has a contact lens body 210, and the contact lens body 210 is formed by injecting a high molecular polymer solution into the mold cavity 30 and curing it; the surfaces on the opposite sides of the contact lens body 210 have an outer surface 212 and an inner surface 214, the outer surface 212 is the surface in contact with the mold cavity 22 of the stamping mold device 100', and the inner surface 214 is the surface in contact with the protrusion 12 of the stamping mold device 100'; the contact lens body 210 includes a middle portion 216 and a peripheral portion 217 surrounding the middle portion 216, wherein an embossed rough surface 60 (such as Figure 7B The embossed rough surface 60 is formed by the rough surface 40 after the polymer solution is injected into the embossing mold device 100' and solidified. The design of the embossed rough surface 60 can increase the contact area between the contact lens body 210 and the printed color ink, thereby enhancing the adhesion of the color ink to the peripheral portion 217 of the contact lens body 210.
[0108] The contact lens body 210 has an optical axis L2, and the optical axis L2 passes through the center of the outer surface 212 and the inner surface 214 of the contact lens body 210; when the contact lens body 210 is projected onto a virtual projection plane S2' perpendicular to the optical axis to form a projection P2', a third area R3 is defined in the projection P2' corresponding to the middle portion 216, and a fourth area R4 is defined in the projection P2' corresponding to the embossed rough surface 60, and the fourth area R4 surrounds the third area R3; the longitudinal length of the third area R3 is A third length D3, the longitudinal length of one of the two opposite sides of the fourth region R4 is a fourth length D4. In the present embodiment, when the ratio D3 / D4 of the third length D3 to the fourth length D4 is between 0.05 and 9, the embossed rough surface 60 can not only better improve the adhesion between the contact lens body 210 and the surface of the mold cavity 22, but also increase the contact area between the contact lens body 210 of the cured polymer and the printed color ink, so as to enhance the adhesion effect of the color ink, thereby improving the yield and quality of manufacturing color contact lenses.
[0109] See also FIG. 8A to FIG. 8CAs shown, it is an imprinting mold core device 100" of the third preferred embodiment of the utility model. The third preferred embodiment is based on the first preferred embodiment and the second preferred embodiment, and the difference is that in the third preferred embodiment, a rough surface 40 is formed around the surface of the protrusion 12 of the first mold core 10 and the mold cavity 22 of the second mold core 20. By injecting a curable high molecular polymer solution into the mold cavity 30 between the first mold core 10 and the second mold core 20, the high molecular polymer solution is cured in the mold cavity 30 to form a contact lens.
[0110] In the third preferred embodiment, the rough surface 40 is formed around the surface of the protrusion 12 and the surface of the mold cavity 22 (eg Figure 8B and Figure 8C As shown), and there is a smooth surface 50 in the middle of the surface of the protrusion 12 and the surface of the mold cavity 22, wherein the centerline average roughness (Ra) of the rough surface 40 is between 0.1 and 8.0, so that the centerline average roughness (Ra) of the rough surface 40 is greater than the centerline average roughness (Ra) of the smooth surface 50. Therefore, the rough surface 40 is formed around the surface of the protrusion 12 of the first mold core 10 and the surface of the mold cavity 22 of the second mold core 20, so that after the polymer solution in the mold cavity 30 is solidified into a contact lens, when the "imprint mold core device 100" is opened, that is, when the first mold core 10 and the second mold core 20 are separated, the adhesion of the solidified polymer to the surface of the protrusion 12 and the surface of the mold cavity 22 can be improved, so that the demolding direction of the contact lens can be controlled when demolding, so as to improve the yield and quality of manufacturing contact lenses.
[0111] The first mold core 10 and the second mold core 20 have a central axis L1, and the central axis L1 passes through the center of the protrusion 12, and the central axis L1 also passes through the center of the mold cavity 22; when the protrusion 12 is projected onto a virtual projection surface S1" which is perpendicular to the central axis to form a projection P1", the projection P1" defines a first area R1 corresponding to the smooth surface 50, and the projection P1" defines a second area R2 corresponding to the rough surface 40, so that the second area R2 surrounds the first area R1; the longitudinal length of the first area R1 is a first length D1, and the longitudinal length of one of the opposite sides of the second area R2 is a second length D2, and the ratio D1 / D2 of the first length D1 to the second length D2 is between 0.05 and 9. In this embodiment, when the first length D1 of the first zone R1 is between 1 mm and 9 mm, and the second length D2 of the second zone R2 is between 1 mm and 15 mm, the adhesion between the polymer contact lens and the surface of the protrusion 12 and the mold cavity 22 can be better improved, so that the demolding direction of the contact lens can be better controlled during demolding.
[0112] See also Fig. 9A and Fig. 9B As shown, it is a contact lens 200" manufactured by the stamping mold device of the third preferred embodiment of the utility model, wherein the contact lens manufactured by the stamping mold device 100" has a contact lens body 210, and the contact lens body 210 is formed by injecting a high molecular polymer solution into the mold cavity 30 and curing it; the surfaces on opposite sides of the contact lens body 210 have an outer surface 212 and an inner surface 214, the outer surface 212 is the surface in contact with the mold cavity 22 of the stamping mold device 100", and the inner surface 214 is the surface in contact with the protrusion 12 of the stamping mold device 100". The contact lens body 210 includes a middle part 216 and a peripheral part 217 surrounding the middle part 216, wherein the outer surface 212 and the inner surface 214 of the peripheral part 217 form an embossed rough surface 60 (such as Fig. 9B As shown in the figure, the embossed rough surface 60 is the embossed rough surface 60 corresponding to the rough surface 40 after the polymer solution is injected into the embossing mold device 100" and solidified. By forming the embossed rough surface 60 on the outer surface 212 and the inner surface 214 of the contact lens body 210, the contact area between the contact lens body 210 and the printed color ink can be increased, thereby enhancing the adhesion of the color ink to the peripheral portion 217 of the contact lens body 210.
[0113] The contact lens body has an optical axis L2, and the optical axis L2 passes through the center of the outer surface 212 and the inner surface 214 of the contact lens body 210; when the contact lens body 210 is projected onto a virtual projection plane S2" perpendicular to the optical axis to form a projection P2", a third area R3 is defined in the projection P2" corresponding to the middle part 216, and a fourth area R4 is defined in the projection P2" corresponding to the embossed rough surface 60, and the fourth area R4 surrounds the third area R3; the longitudinal length of the third area R3 is a third length The fourth region R4 has a longitudinal length of one of the two opposite sides thereof being a fourth length D4. In the present embodiment, when the ratio D3 / D4 of the third length D3 to the fourth length D4 is between 0.05 and 9, the embossed rough surface 60 can not only better improve the adhesion between the contact lens body 210 and the surfaces of the protrusion 12 and the cavity 22, but also increase the contact area between the contact lens body 210 of the cured polymer and the printed color ink, so as to enhance the adhesion effect of the color ink, thereby improving the yield and quality of manufacturing color contact lenses.
[0114] Based on the above three different embodiments, the rough surface 40 is formed around the surface of the mold cavity 22 and / or the surface of the bump 12 of the stamping mold device 100, 100', 100", so that after the polymer solution injected into the mold cavity 30 is solidified into a contact lens, when the stamping mold device 100, 100', 100" is opened, the rough surface 40 can improve the adhesion between the solidified polymer and the mold cavity 22 and / or the surface of the bump 12, so that the demolding direction of the contact lens can be better controlled during demolding, thereby improving the yield and quality of manufacturing contact lenses.
[0115] In addition, the contact lenses 200, 200', 200" manufactured by the stamping mold device 100, 100', 100" have a contact lens body 210 that is formed by injecting a high molecular polymer solution into the mold cavity 30 and curing it. Therefore, the outer surface 212 and / or the inner surface 214 of the peripheral portion 217 of the contact lens body 210 will form the corresponding stamped rough surface 60. The design of the stamped rough surface 60 can increase the contact area between the contact lens body 210 and the printed color ink, enhance the adhesion of the color ink to the peripheral portion 217 of the contact lens body 210, and thereby improve the yield and quality of manufacturing colored contact lenses.
[0116] See also FIG. 10A to FIG. 11 As shown, the stamping mold core device 300 of the fourth preferred embodiment of the utility model is different from the second preferred embodiment in the setting method of the rough surface 40, and the structure of the first mold core 10 and the second mold core 20 are the same as those of the second preferred embodiment. The differences are explained below.
[0117] In the fourth preferred embodiment, the middle of the surface of the mold cavity 22 has a smooth surface 50, the rough surface 40 is formed around the surface of the mold cavity 22, and a smooth portion 70 is formed around the portion of the surface of the mold cavity 22 between the rough surface 40 and the outer periphery of the mold cavity 22, the rough surface 40 is located between the smooth surface 50 and the smooth portion 70, and the surface of the protrusion 12 of the first mold core 10 is smooth; wherein the centerline average roughness (Ra) of the rough surface 40 is between 0.1 and 8.0, so that the centerline average roughness (Ra) of the rough surface 40 is greater than the centerline average roughness (Ra) of the smooth surface 50 and the smooth portion 70. Therefore, when the stamping mold core device 300 is opened, the polymer is fixed to the second mold core 20, and when demolding, the design of the rough surface 40 improves the adhesion between the surface of the mold cavity 22 and the solidified polymer, so that the contact lens can control the demolding direction when demolding.
[0118] The first mold core 10 and the second mold core 20 have a central axis L1, and the central axis L1 passes through the center of the protrusion 12, and the central axis L1 also passes through the center of the mold cavity 22; Fig. 10A , Fig.11 As shown, when the mold cavity 22 is projected onto a virtual projection plane S3 perpendicular to the central axis L1 to form a projection P3, the projection P3 defines a first region R1 corresponding to the smooth surface 50, the projection P3 defines a fifth region R5 corresponding to the rough surface 40, and the projection P3 defines a sixth region R6 corresponding to the smooth portion 70, so that the outer side of the fifth region R5 surrounds the sixth region R6 (as shown in FIG. Fig.11 ); the longitudinal length of the first region R1 is a first length D1, the longitudinal length of one of the opposite sides of the fifth region R5 is a fifth length D5, and the ratio D1 / D5 of the first length D1 to the fifth length D5 is between 0.05 and 9.0; the longitudinal length of one of the opposite sides of the sixth region R6 is a sixth length D6, and the ratio D6 / D5 of the sixth length D6 to the fifth length D5 is between 0.05 and 9. In this embodiment, when the first length D1 of the first region R1 is between 1 mm and 9 mm, the fifth length D5 of the fifth region R5 is between 1 mm and 15 mm, and the sixth length D6 of the sixth region R6 is between 1 mm and 9 mm, the adhesion between the contact lens of the cured high molecular polymer and the surface of the mold cavity 22 can be better improved, so that the contact lens can better control the demolding direction when demolding.
[0119] See also FIG. 12A to FIG. 13 As shown, a contact lens 400 manufactured by the stamping mold device of the third preferred embodiment of the utility model is shown, wherein the contact lens manufactured by the stamping mold device 300 has a contact lens body 210, and the contact lens body 210 is formed by injecting a high molecular polymer solution into the mold cavity 30 and curing it; the surfaces on the opposite sides of the contact lens body 210 have an outer surface 212 and an inner surface 214, and the outer surface 212 is opposite to the mold cavity 214 of the stamping mold device 100. 2, the inner surface 214 is the surface in contact with the protrusion 12 of the stamping mold device 100; the contact lens body 210 includes a middle portion 216 and a peripheral portion 217, the peripheral portion 217 includes a first ring segment 218 and a second ring segment 219 from the inside to the outside, wherein an embossed rough segment 218a is formed on the outer surface 212 of the first ring segment 218, and an embossed smooth segment 219a (such as Fig. 12BThe embossed rough section 218a is formed by the rough surface 40 corresponding to the polymer solution injected into the embossing mold device 300 and solidified. Therefore, the design of forming the embossed rough section 218a on the outer surface 212 of the contact lens body 210 can increase the contact area between the contact lens body 210 and the printed color ink, thereby enhancing the adhesion of the color ink.
[0120] The contact lens body 210 has an optical axis L2, and the optical axis L2 passes through the center of the outer surface 212 and the inner surface 214 of the contact lens body 210; see Fig. 12A , Fig.13 As shown, when the contact lens body 210 is projected onto a virtual projection plane S4 perpendicular to the optical axis to form a projection P4, a third region R3 is defined in the projection P4 corresponding to the middle portion 216, a seventh region R7 is defined in the projection P4 corresponding to the embossed rough segment 218a, and an eighth region R8 is defined in the projection P4 corresponding to the embossed smooth segment 219a. The outer side of the seventh region R7 surrounds the eighth region R8 (as shown in FIG. Fig.13 ); the longitudinal length of the third region R3 is a third length D3, the longitudinal length of one of the opposite sides of the seventh region R7 is a seventh length D7, and the longitudinal length of one of the opposite sides of the eighth region R8 is an eighth length D8. In this embodiment, when the ratio D3 / D7 of the third length D3 to the seventh length D7 is between 0.05 and 9 and the ratio D8 / D7 of the eighth length D8 to the seventh length D7 is between 0.05 and 9, the adhesion between the contact lens body 210 and the surface of the mold cavity 22 can be better improved, and the contact area between the contact lens body 210 of the cured polymer and the printed color ink can be increased to enhance the adhesion effect of the color ink, thereby improving the yield and quality of manufacturing color contact lenses.
[0121] See also FIG. 14A to FIG. 15 As shown, the stamping mold core device 300' of the fifth preferred embodiment of the utility model is shown. The difference between the fifth preferred embodiment and the fourth preferred embodiment is the number of the rough parts 42 and the smooth parts 70 of the rough surface 40. The difference is explained below.
[0122] In the fifth preferred embodiment, the middle of the surface of the mold cavity 22 has a smooth surface 50, the rough surface 40 is formed around the surface of the mold cavity 22, the rough surface 40 includes two rough portions 42, the two rough portions 42 are formed on the surface of the mold cavity 22 in a concentric manner and the two rough portions 42 are arranged at intervals, the portion of the mold cavity surface 22 located between the two adjacent rough portions 42 and the portion of the mold cavity surface 22 located between the outermost rough portion 42 and the outer peripheral edge of the mold cavity 22 are respectively surrounded to form a smooth portion 70, and the surface of the protrusion 12 of the first mold core 10 is smooth. In other preferred embodiments, the rough surface 40 can also be configured to include a plurality of rough portions 42, the plurality of rough portions 42 are formed on the surface of the mold cavity 22 in a concentric manner and are arranged at intervals, and the portion of the mold cavity surface 22 located between the two adjacent rough portions 42 and the portion of the mold cavity surface 22 located between the outermost rough portion 42 and the outer peripheral edge of the mold cavity 22 are respectively surrounded to form a smooth portion 70.
[0123] The first mold core 10 and the second mold core 20 have a central axis L1, and the central axis L1 passes through the center of the protrusion 12, and the central axis L1 also passes through the center of the mold cavity 22; Fig.14A , Fig.15 As shown, when the mold cavity 22 is projected onto a virtual projection plane S3' perpendicular to the central axis L1 to form a projection P3', the projection P3' defines a first area R1 corresponding to the smooth surface 50, the projection P3' defines a fifth area R5 corresponding to each of the rough portions 42, and the projection P3' defines a sixth area R6 corresponding to each of the smooth portions 70, so that the outer side of the fifth area R5 surrounds the sixth area R6 (as shown in FIG. Fig.15 ); the longitudinal length of the first region R1 is a first length D1, the longitudinal length of one of the opposite sides of the fifth region R5 is a fifth length D5, and the ratio D1 / D5 of the first length D1 to the fifth length D5 is between 0.05 and 9.0; the longitudinal length of one of the opposite sides of the sixth region R6 is a sixth length D6, and the ratio D6 / D5 of the sixth length D6 to the fifth length D5 is between 0.05 and 9. In this embodiment, when the first length D1 of the first region R1 is between 1 mm and 9 mm, the fifth length D5 of the fifth region R5 is between 1 mm and 15 mm, and the sixth length D6 of the sixth region R6 is between 1 mm and 9 mm, the adhesion between the contact lens of the cured high molecular polymer and the surface of the mold cavity 22 can be better improved, so that the contact lens can better control the demolding direction when demolding.
[0124] See also FIG. 16A to FIG. 17As shown, it is a contact lens 400' manufactured by the stamping mold device of the fifth preferred embodiment of the utility model, wherein the contact lens manufactured by the stamping mold device 300' has a contact lens body 210, and the contact lens body 210 is formed by injecting a high molecular polymer solution into the mold cavity 30 and curing it; the surfaces on the opposite sides of the contact lens body 210 have an outer surface 212 and an inner surface 214, the outer surface 212 is the surface in contact with the mold cavity 22 of the stamping mold device 100, and the inner surface 214 is the surface in contact with the convex surface of the stamping mold device 100. The contact lens body 210 includes a middle portion 216 and a peripheral portion 217, wherein the peripheral portion 217 has a plurality of first ring segments 218 and a plurality of second ring segments 219 arranged alternately from the inside to the outside, each of the second ring segments 219 is formed between two adjacent first ring segments 218 and between the outermost first ring segment 218 and the outer periphery of the contact lens body 210, and an embossed rough segment 218a is formed on the outer surface 212 of each of the first ring segments 218, and an embossed smooth segment 219a (such as Fig. 16B Each of the embossed rough sections 218a is formed by each of the rough portions 42 after the polymer solution is injected into the embossing mold device 300 and solidified. Therefore, the design of forming the embossed rough sections 218a on the outer surface 212 of the contact lens body 210 can increase the contact area between the contact lens body 210 and the printed color ink, thereby enhancing the adhesion of the color ink.
[0125] The contact lens body 210 has an optical axis L2, and the optical axis L2 passes through the center of the outer surface 212 and the inner surface 214 of the contact lens body 210; see Fig.16A , Fig.17 As shown, when the contact lens body 210 is projected onto a virtual projection plane S4' perpendicular to the optical axis to form a projection P4', a third region R3 is defined in the projection P4' corresponding to the middle portion 216, a seventh region R7 is defined in the projection P4' corresponding to each of the embossed rough segments 218a, and an eighth region R8 is defined in the projection P4' corresponding to each of the embossed smooth segments 219a. The outer side of the seventh region R7 surrounds the eighth region R8 (as shown in FIG. Fig.17); the longitudinal length of the third region R3 is a third length D3, the longitudinal length of one of the opposite sides of the seventh region R7 is a seventh length D7, and the longitudinal length of one of the opposite sides of the eighth region R8 is an eighth length D8. In this embodiment, when the ratio D3 / D7 of the third length D3 to the seventh length D7 is between 0.05 and 9 and the ratio D8 / D7 of the eighth length D8 to the seventh length D7 is between 0.05 and 9, the adhesion between the contact lens body 210 and the surface of the mold cavity 22 can be better improved, and the contact area between the contact lens body 210 of the cured polymer and the printed color ink can be increased to enhance the adhesion effect of the color ink, thereby improving the yield and quality of manufacturing color contact lenses.
[0126] In the fourth preferred embodiment and the fifth preferred embodiment, the user can form the rough surface 40 on the surface of the mold cavity 22 according to product requirements. Not only can the demolding direction be controlled during demolding, but also the embossed rough section 218a corresponding to the contact lens body 210 can enhance the adhesion effect of the colored ink. Therefore, the user can print ink on the required area without having to maintain a smooth surface where the ink is printed, so that light can penetrate through the smooth surface, thereby improving the clarity and comfort of the user when wearing the lens.
[0127] In other embodiments, the rough surface mentioned above can also be formed on the bump surface, or formed on both the cavity surface and the bump surface, and the contact lens manufactured by the stamping mold device will also have a corresponding stamped rough segment.
[0128] It is worth mentioning that, in the present embodiment, the rough surface 40 is formed by plasma treatment. In other embodiments, other rough treatment methods may be used, including other surface treatment methods such as frosting and etching.
[0129] The above description is only a preferred feasible embodiment of the present utility model. Any equivalent changes made by applying the specification and claims of the present utility model should be included in the patent scope of the present utility model.
Claims
1. A stamping mold device, characterized in that: It comprises a first mold core and a second mold core which can be matched, wherein the first mold core has a protrusion; the second mold core has a mold cavity, and the mold cavity is for the protrusion to be embedded; when the first mold core and the second mold core are matched, the protrusion is embedded in the mold cavity, and a mold cavity is formed between the protrusion and the mold cavity, and the mold cavity is in the shape of a contact lens; wherein a rough surface is formed around the surface of the mold cavity and / or around the surface of the protrusion.
2. The stamping mold device according to claim 1, characterized in that: The first mold core and the second mold core have a central axis; the protrusion is a spherical block, and the mold cavity is a spherical groove; the central axis passes through the center of the protrusion, and the central axis passes through the center of the mold cavity.
3. The stamping mold device according to claim 2, characterized in that: The rough surface is formed around the surface of the bump, and a smooth surface is provided in the middle of the surface of the bump; the bump is projected onto a virtual projection plane perpendicular to the central axis to form a projection; the projection defines a first area corresponding to the smooth surface, and the projection defines a second area corresponding to the rough surface, and the second area surrounds the first area.
4. The stamping mold device according to claim 2, characterized in that: The rough surface is formed around the mold cavity surface, and the middle of the mold cavity surface has a smooth surface; the mold cavity is projected onto a virtual projection plane perpendicular to the central axis to form a projection; the projection defines a first area corresponding to the smooth surface, and the projection defines a second area corresponding to the rough surface, and the second area surrounds the first area.
5. The stamping mold core device according to claim 3 or 4, characterized in that: The longitudinal length of the first area is a first length, the longitudinal length of one of the two opposite sides of the second area is a second length, and the ratio of the first length to the second length is between 0.05 and 9.
6. The stamping mold device according to claim 5, characterized in that: The first length is between 1 mm and 9 mm.
7. The stamping mold device according to claim 5, characterized in that: The second length is between 1 mm and 15 mm.
8. The stamping mold device according to claim 1, characterized in that: The centerline average roughness of the rough surface is between 0.1 and 8.
0.
9. The stamping mold device according to claim 3, characterized in that: The centerline average roughness of the second region is greater than the centerline average roughness of the first region.
10. The stamping mold device according to claim 2, characterized in that: The rough surface is formed around the surface of the bump and / or the mold cavity, and the middle of the surface of the bump and / or the mold cavity has a smooth surface, and a smooth portion is formed around the portion of the surface of the bump and / or the mold cavity between the rough surface and the outer periphery of the bump and / or the mold cavity; the bump and / or the mold cavity is projected onto a virtual projection plane perpendicular to the central axis to form a projection; the projection defines a first area corresponding to the smooth surface, the projection defines a fifth area corresponding to the rough surface, and the projection defines a sixth area corresponding to the smooth portion.
11. The stamping mold device according to claim 2, characterized in that: The rough surface includes a plurality of rough portions, which are formed on the surface of the bump and / or the mold cavity in a concentric manner and are arranged at intervals. The outer sides of the plurality of rough portions are respectively surrounded by a plurality of smooth portions, and the middle of the surface of the bump and / or the mold cavity has a smooth surface; the bump and / or the mold cavity are projected on a virtual projection plane perpendicular to the central axis to form a projection; the projection defines a first area corresponding to the smooth surface, the projection defines a fifth area corresponding to each of the rough portions, and the projection defines a sixth area corresponding to each of the smooth portions.
12. The stamping mold device according to claim 10 or 11, characterized in that: The longitudinal length of the first zone is a first length, the longitudinal length of one of the opposite sides of the fifth zone is a fifth length, and the ratio of the first length to the fifth length is between 0.05 and 9; the longitudinal length of one of the opposite sides of the sixth zone is a sixth length, and the ratio of the sixth length to the fifth length is between 0.05 and 9.
13. A contact lens manufactured by an impression mold device, characterized in that: A contact lens body is provided, which includes a middle portion and a peripheral portion surrounding the middle portion, and the surfaces on opposite sides of the contact lens body have an outer surface and an inner surface, wherein an embossed rough surface is formed on the outer surface and / or the inner surface of the peripheral portion.
14. A contact lens manufactured by the stamping mold device according to claim 13, characterized in that: The contact lens body has an optical axis; the contact lens body is projected onto a virtual projection plane perpendicular to the optical axis to form a projection; the projection defines a third zone corresponding to the middle portion, and the projection defines a fourth zone corresponding to the embossed rough surface, and the fourth zone surrounds the third zone; the longitudinal length of the third zone is a third length, and the longitudinal length of one of the opposite sides of the fourth zone is a fourth length, and the ratio of the third length to the fourth length is between 0.05 and 9.
15. The contact lens manufactured by the stamping mold device according to claim 13, characterized in that: The peripheral portion includes a first ring segment and a second ring segment from the inside to the outside, a stamped rough segment is formed on the outer surface and / or the inner surface of the first ring segment, and a stamped smooth segment is formed on the outer surface and / or the inner surface of the second ring segment.
16. The contact lens manufactured by the stamping mold device according to claim 13, characterized in that: The peripheral portion has a plurality of first ring segments and a plurality of second ring segments arranged alternately from the inside to the outside, and an embossed rough segment is formed on the outer surface and / or the inner surface of each first ring segment, and an embossed smooth segment is formed on the outer surface and / or the inner surface of each second ring segment.
17. A contact lens manufactured by the stamping mold device according to claim 15 or 16, characterized in that: The contact lens body has an optical axis; the contact lens body is projected onto a virtual projection plane perpendicular to the optical axis to form a projection; the projection defines a third zone corresponding to the middle part, the projection defines a seventh zone corresponding to at least one of the embossed rough segments, and the projection defines an eighth zone corresponding to at least one of the embossed smooth segments, and the outer side of the seventh zone surrounds the eighth zone; the longitudinal length of the third zone is a third length, the longitudinal length of one of the two opposite sides of the seventh zone is a seventh length, and the ratio of the third length to the seventh length is between 0.05 and 9; the longitudinal length of one of the two opposite sides of the eighth zone is an eighth length, and the ratio of the eighth length to the seventh length is between 0.05 and 9.