CN106671354B - Optical mirror slip manufacturing method, manufacture mold and products thereof - Google Patents
Optical mirror slip manufacturing method, manufacture mold and products thereof Download PDFInfo
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- CN106671354B CN106671354B CN201510762864.1A CN201510762864A CN106671354B CN 106671354 B CN106671354 B CN 106671354B CN 201510762864 A CN201510762864 A CN 201510762864A CN 106671354 B CN106671354 B CN 106671354B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 102
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 69
- 238000002347 injection Methods 0.000 claims abstract description 35
- 239000007924 injection Substances 0.000 claims abstract description 35
- 239000004033 plastic Substances 0.000 claims abstract description 30
- 229920003023 plastic Polymers 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 2
- 208000002925 dental caries Diseases 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000003384 imaging method Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0016—Lenses
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
A kind of optical mirror slip manufacturing method, manufacture mold and products thereof, its production process includes steady step, one procedure of processing and a forming step, prepare a manufacture mold, it manufactures mold and is equipped with a pedestal, one lower die group, one upper mold group and an injection head, the pedestal is equipped at least three knock pins, the lower die group is equipped with mold and once mode, the lower mode is equipped with die cavity and at least three perforation, each knock pin perforated protrudes into lower die cavity, upper mold group is equipped with the upper cores of a upper mold and a tool upper mould cave, a die cavity is formed when two modes mutually recline between two die cavitys, liquid plastic is in one optical mirror slip of die cavity internal shaping, each knock pin pushes against optical mirror slip bottom surface simultaneously, make optical mirror slip uniform stressed and is detached from lower die cavity, one is provided averagely to exert a force, it is unlikely to deform and optical mirror slip manufacturing method that yields is high, manufacture mold and its Product.
Description
Technical Field
The invention relates to a method for manufacturing an optical lens, a manufacturing mold and a product thereof, in particular to a method for manufacturing an optical lens, a manufacturing mold and a product thereof, which apply force evenly, are not easy to deform and have high yield.
Background
The present manufacturing mold for manufacturing optical lens mainly comprises a base, a lower mold set and an upper mold set, wherein the top surface of the base is provided with an upright ejection pin, the lower mold set is movably arranged above the base up and down and is provided with a lower mold, a lower mold core and a through hole, the lower mold is transversely arranged above the base and is concavely provided with a lower runner on the top surface, the lower mold core is arranged in the lower mold and is flush with the top surface of the lower mold, the lower mold core is provided with a lower mold cavity and a pouring inlet, the lower mold cavity is concavely arranged on the top surface of the lower mold core and is communicated with the lower runner, the pouring aperture axially penetrates through the outer surface of the lower mold core close to the top surface, the through hole longitudinally penetrates through the lower mold and is positioned on one side of the lower mold core and is communicated with the lower runner, and the through hole is sleeved on the periphery of the ejection pin of the base.
The upper die set is arranged above the lower die set and can be relatively close to or far away from the lower die set, the upper die set is provided with an upper die and an upper die core, the bottom surface of the upper die is concavely provided with an upper flow passage corresponding to the lower flow passage, the upper die can be attached to the lower die, the upper die core is arranged in the upper die, the bottom surface of the upper die is flush with the bottom surface of the upper die, the upper die core is provided with an upper die cavity and a pouring inlet, the upper die cavity is concavely arranged on the bottom surface of the upper die core and is communicated with the upper flow passage, the pouring inlet is radially penetrated through the outer surface of the upper die core close to the bottom surface, and the pouring inlets of the two die cores form an annular injection hole.
When the existing mold for manufacturing the optical lens is used, the lower mold set is moved upwards and attached to the upper mold set, so that the mold cavity between the two mold cores forms a mold cavity, and liquid plastic is injected into the mold cavity through the injection port formed by the two injection ports to form an optical lens, wherein the liquid plastic injected into the mold cavity flows into the flow channels of the two molds to seal the through hole, after the optical lens located in the mold cavity is cooled and plasticized, the lower mold set is moved downwards to be separated from the upper mold set, and the ejector pin of the base is extended into the lower flow channel of the lower mold set through the through hole to push against the plastic located in the lower flow channel, so that the optical lens located in the lower mold cavity is separated from the lower mold core along with the plastic in the lower flow channel indirectly.
However, although the existing mold for manufacturing optical lens can provide an effect of manufacturing optical lens, when the existing mold for manufacturing optical lens is used, the optical lens is ejected out of the lower mold core through the ejection pin, wherein because the ejection pin ejects one side edge close to the optical lens, a single-side force application manner is easy to generate a stress concentration situation on one side of the optical lens during the ejection process, and further the optical lens generates a deformation phenomenon (release phenomenon), which not only affects the product yield of the optical lens, but also the surface precision (PV, Peak to Valley) of the aspheric surface of the deformed optical lens is asymmetric due to the deformation when the deformed optical lens is used, and further affects the imaging effect of the optical lens, further, the existing mold for manufacturing optical lens, the lower mold core or the upper mold core is composed of a plurality of separated components, therefore, the gaps between the components of the lower mold core or the upper mold core are easy to generate accumulated tolerance after assembly, and the result of the accumulated tolerance affects the precision and yield of the manufactured optical lens, so that the existing manufacturing mold for manufacturing the optical lens and the manufactured optical lens have the need of improvement.
Disclosure of Invention
Therefore, the present inventors have made extensive studies and experiments to develop a mold for manufacturing an optical lens and an optical lens using the mold, which can improve the disadvantages of the conventional mold.
The invention aims to provide an optical lens manufacturing method, a manufacturing mold and a product thereof, which can push a formed optical lens out of the manufacturing mold in an average force applying way in the manufacturing process through a simplified structural configuration way, so that the formed optical lens has no stress concentration and deformation, and a mold core of the manufacturing mold is in an integrally formed structural form, so that accumulated tolerance generated in assembly can be effectively avoided, and the aims of average force application, difficult deformation and high yield are provided.
To achieve the above object, the present invention provides a method for manufacturing an optical lens, the manufacturing process comprising:
a preparation step: preparing a manufacturing mold, the manufacturing mold having a base, a lower mold set, an upper mold set and an ejection head, the base having at least three upright ejection pins spaced apart from each other, the lower mold set being disposed above the base in a manner allowing the lower mold set to move up and down and having a lower mold and a lower mold insert, the lower mold insert being disposed in the lower mold and having a lower mold cavity, at least three through holes and a pouring inlet, the lower mold cavity being recessed in a top surface of the lower mold insert, the at least three through holes penetrating through the lower mold insert at intervals and communicating with the lower mold cavity, each through hole being respectively fitted over one of the ejection pins of the base, the pouring inlet having a diameter radially penetrating through an outer surface of the lower mold insert and communicating with the lower mold cavity, the upper mold set being disposed above the lower mold set in a manner allowing the upper mold insert to be relatively close to or far away from the upper mold set and having an upper mold cavity and a pouring inlet, the upper die cavity is concavely arranged on the bottom surface of the upper die core and is matched with the lower die cavity in shape, the pouring aperture of the upper die core penetrates through the outer surface of the upper die core close to the bottom surface in the radial direction, the ejecting head can be movably arranged on one side of the lower die set and the upper die set, and liquid plastic is arranged in the ejecting head;
a processing step: moving the upper die set towards the lower die set to enable the upper die core to be attached to the lower die core, forming a die cavity between the upper die cavity and the lower die cavity, forming an injection hole communicated with the die cavity between the two pouring inlets, extending the injection head into the injection hole, injecting the liquid plastic into the die cavity, enabling the liquid plastic to fill the die cavity, and moving the injection head out of the injection hole after the die cavity is filled with the liquid plastic, so that the liquid plastic in the die cavity is cooled and plasticized into an optical lens; and
a forming step: after the liquid plastic is cooled and plasticized into the optical lens in the mold cavity, the upper mold assembly moves upwards to be separated from the lower mold assembly, so that the upper mold cavity is separated from the optical lens, the lower mold assembly moves towards the base, so that the ejection pins on the base extend out of the lower mold cavity through the corresponding through holes, the top ends of the ejection pins simultaneously push against the bottom surface of the optical lens, and the optical lens is uniformly stressed to be separated from the lower mold cavity, so that the manufacturing of the optical lens is completed.
Further, in the preparation step, a lower arc convex surface is formed at the center of the bottom surface of the lower die cavity, at least three arc-shaped long grooves are concavely arranged on the outer periphery of the lower arc convex surface at intervals in an annular manner, a step surface is formed between the lower arc convex surface and the at least three arc-shaped long grooves, each through hole is respectively positioned between two adjacent arc-shaped long grooves of the lower die cavity, and an upper arc convex surface is convexly arranged at the center of the upper die cavity downwards.
Furthermore, in the preparation step, four ejection pins are arranged at intervals on the top surface of the base, four arc-shaped long grooves are arranged in the lower die cavity at intervals and in an annular arrangement, and four through holes which are respectively combined with the ejection pins of the base and are positioned among the arc-shaped long grooves are arranged in the lower die core.
Further, the present invention provides a manufacturing mold used in the above optical lens manufacturing method, comprising:
the base is provided with at least three upright ejection pins which are arranged at intervals;
the lower die set is arranged above the base in a vertically movable mode and is provided with a lower die and a lower die core, the lower die core is arranged in the lower die and is provided with a lower die cavity, at least three through holes and a pouring inlet, the lower die core is in an integrally formed structural shape, the lower die cavity is concavely arranged on the top surface of the lower die core, the at least three through holes penetrate through the lower die core at intervals and are communicated with the lower die cavity, each through hole is respectively sleeved on one of the ejector pins of the base, and the pouring inlet is radially penetrated through the outer surface of the lower die core and is communicated with the lower die cavity;
the upper die set can be arranged above the lower die set in a relatively close or far way and is provided with an upper die and an upper die core, the upper die core is arranged in the upper die and is provided with an upper die cavity and a pouring inlet, the upper die cavity is concavely arranged on the bottom surface of the upper die core and is in accordance with the shape of the lower die cavity, and the pouring inlet of the upper die core penetrates through the outer surface of the upper die core close to the bottom surface in the radial direction; and
an ejection head movably disposed at one side of the lower module and the upper module and having liquid plastic therein.
Furthermore, a mold cavity is formed between the upper mold cavity and the lower mold cavity under the state that the upper mold core is attached to the lower mold core, an injection hole communicated with the mold cavity is formed between the two pouring inlets, and the injection head can extend into the injection hole.
Furthermore, a lower arc convex surface is formed at the center of the bottom surface of the lower die cavity, at least three arc-shaped long grooves are concavely arranged on the outer periphery of the lower arc convex surface at intervals, a step surface is arranged between the lower arc convex surface and the at least three arc-shaped long grooves, each through hole is respectively positioned between two adjacent arc-shaped long grooves of the lower die cavity, and an upper arc convex surface is convexly arranged at the center of the upper die cavity downwards.
Preferably, the base has four ejection pins spaced apart from each other on the top surface thereof, the lower cavity has four arc-shaped slots spaced apart from each other and arranged in an annular shape, and the lower cavity has four through holes respectively coupled to the ejection pins of the base and located between the arc-shaped slots.
The present invention further provides an optical lens manufactured by the above method, wherein the bottom surface and the top surface of the optical lens respectively correspond to the lower arc convex surface and the upper arc convex surface to form a first concave surface corresponding to the lower arc convex surface and a second concave surface corresponding to the upper arc convex surface, and a plurality of positioning convex surfaces corresponding to the arc-shaped long grooves of the lower mold cavity are convexly arranged on the bottom surface of the optical lens at intervals.
By the technical means, the optical lens manufacturing method and the manufacturing mold of the invention are used, a plurality of through holes with the same number as the ejection pins of the base are mainly arranged in the lower mold core in a penetrating way, after the liquid plastic is cooled and plasticized into the optical lens in the mold cavity, when the lower mold moves towards the base, each ejection pin can extend into the lower mold cavity through the corresponding through hole and directly and simultaneously push against the bottom surface of the optical lens, so that the optical lens can be separated from the lower mold cavity under the condition of uniform stress, therefore, the optical lens can not generate the condition of stress concentration, the phenomenon of deformation of the optical lens can be effectively avoided, the product yield of the optical lens can be greatly improved, the probability of asymmetric surface precision of the aspheric surface of the optical lens can be reduced, the optical lens can provide better imaging effect, and further, the lower mold cavity is internally provided with a plurality of structures with arc-shaped long grooves arranged at intervals in a ring shape, after the liquid plastic is cooled and plasticized in the mold cavity, a plurality of positioning convex surfaces which respectively correspond to the arc-shaped long grooves of the lower mold cavity can be formed on the bottom surface of the optical lens, when the optical lens is combined with relevant optical equipment, each positioning convex surface can provide a positioning effect which is assembled to serve as a reference surface, and further, the lower mold core or the upper mold core of the manufacturing mold is in an integrally formed structural shape, so that accumulated tolerance generated in assembly can be effectively avoided, and the manufacturing method, the manufacturing mold and the product of the optical lens are provided, which have the advantages of average force application, difficult deformation and high yield.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein,
FIG. 1 is a block flow diagram illustrating a method for manufacturing an optical lens according to the present invention.
FIG. 2 is a schematic sectional side view of a mold for manufacturing an optical lens according to the present invention.
Fig. 3 is a partially exploded perspective view of the manufacturing mold of the present invention.
FIG. 4 is a schematic side view of the mold of the present invention in a processing step.
FIG. 5 is a partial perspective view of the mold of the present invention during a manufacturing step.
FIG. 6 is a partial perspective sectional view of the mold manufacturing operation during the processing step of the present invention.
FIG. 7 is a schematic side view of the mold of the present invention in a processing step.
FIG. 8 is a side view of a mold in accordance with the present invention in a partially enlarged cross-sectional view during a processing step.
FIG. 9 is a schematic side view of another operational section of the mold of the present invention in a processing step.
FIG. 10 is a schematic side view of another enlarged partial operation of the mold in the processing step of the present invention.
FIG. 11 is a side view of the mold in the molding step of the present invention.
FIG. 12 is a schematic side view of the mold for molding according to the present invention, partially enlarged.
FIG. 13 is a perspective view illustrating a partial operation of the mold in the molding step according to the present invention.
The reference numbers illustrate:
10 base 11 knockout pin
20 lower die set 21 lower die
22 lower die core and 23 lower die cavity
231 lower arc convex surface 232 arc long groove
24 perforation 25 pouring gate
30 mould on module 31
32 upper die core and 33 upper die cavity
331 upper arc convex surface 34 pouring inlet
40 ejection head 50 mold cavity
60 Inject hole 70 optical lens
71 first concave surface 72 second concave surface
73 positioning convexity
Detailed Description
In order to understand the technical features and practical effects of the present invention in detail and to implement the invention according to the content of the specification, the following detailed description of the preferred embodiment is further illustrated in the accompanying drawings (as shown in fig. 1 to 13):
the invention relates to a method for manufacturing an optical lens, which comprises the following manufacturing processes:
A. the preparation method comprises the following steps: a manufacturing mold is prepared, wherein as shown in fig. 1 to 7, the manufacturing mold is provided with a base 10, a lower mold 20, an upper mold 30 and an ejection head 40, wherein the base 10 is provided with at least three upright ejection pins 11 arranged at intervals on the top surface, wherein the at least three ejection pins 11 are annular and are evenly arranged on the top surface of the base 10 at intervals (i.e. arranged at angles of 120 degrees, 240 degrees, 360 degrees, etc.), preferably, the base 10 is provided with four ejection pins 11 arranged at intervals on the top surface, the lower mold 20 is arranged above the base 10 and is provided with a lower mold 21 and a lower mold core 22, and the lower mold 21 can move up and down relative to the ejection pins 11 of the base 10.
The lower mold core 22 is disposed in the lower mold 21 and has a top surface flush with the top surface of the lower mold 21, the lower mold core 22 has a lower mold cavity 23, at least three through holes 24 and a pouring inlet 25, the lower mold cavity 23 is recessed in the top surface of the lower mold core 22, the lower mold cavity 23 has a lower arc convex surface 231 at the center of the bottom surface, and at least three arc-shaped elongated slots 232 are recessed at intervals around the outer periphery of the lower arc convex surface 231, wherein a step surface is disposed between the lower arc convex surface 231 and the at least three arc-shaped elongated slots 232, the at least three through holes 24 axially penetrate through the lower mold core 22 at intervals, so that the through holes 24 are respectively located between two adjacent arc-shaped elongated slots 232 of the lower mold cavity 23, and the through holes 24 are respectively sleeved on a lower mold of one ejection pin 11 of the base 10, preferably, the lower mold core 23 has four arc-shaped elongated slots 232 arranged at intervals and annularly, and the lower mold core 22 has four ejection pins 11 respectively combined with the pins 10 and located between the arc-shaped elongated slots The gate 25 radially penetrates through the outer surface of the lower core 22 near the top surface to communicate with the lower cavity 23.
The upper mold assembly 30 is disposed above the lower mold assembly 20 and can be relatively close to or far away from the lower mold assembly 20, the upper mold assembly 30 is provided with an upper mold 31 and an upper mold core 32, the upper mold 31 can be abutted against the lower mold 21, the upper mold core 32 is disposed in the upper mold 31 and the bottom surface thereof is flush with the bottom surface of the upper mold 31, the upper mold core 32 is provided with an upper mold cavity 33 and a pouring inlet 34, the upper mold cavity 33 is concavely disposed on the bottom surface of the upper mold core 32 and conforms to the shape of the lower mold cavity 23, the upper mold cavity 33 is convexly provided with an upper arc convex surface 331 at the center downward, the pouring inlet 34 radially penetrates through the outer surface of the upper mold core 32 close to the bottom surface, please refer to fig. 5 and 6, when the upper mold assembly 30 is abutted against the lower mold assembly 20, the two lower mold cores 22 and the upper mold core 32 are abutted against each other, so that a closed mold cavity 50 is formed between the lower mold cavity 23 and the upper mold cavity 33, and the two gates 25, 34 form an annular injection hole 60 communicating with the cavity 50.
The injection head 40 is located at one side of the lower mold set 20 and the upper mold set 30, the injection head 40 can move transversely relative to the two lower mold cores 22 and the upper mold core 32, so that the injection head 40 can extend into the injection hole 60, the injection head 40 is provided therein with a liquid plastic, preferably a thermoplastic plastic such as Polycarbonate (PC) or polymethyl methacrylate (PMMA), and the liquid plastic can flow into the mold cavity 50 through the injection head 40 and the injection hole 60.
B. The processing steps are as follows: referring to fig. 4 to 7, the upper mold unit 30 is moved toward the lower mold unit 20 to make the upper mold core 32 abut against the lower mold core 22, the mold cavity 50 is formed between the upper mold cavity 33 and the lower mold cavity 23, the injection hole 60 is formed at the two injection ports 25 and 34, the injection head 40 is inserted into the injection hole 60 and the liquid plastic is injected into the mold cavity 50 to fill the mold cavity 50, after the liquid plastic fills the mold cavity 50, the injection head 40 is moved out of the injection hole 60, and the liquid plastic in the mold cavity 50 is cooled (maintained) to mold the liquid plastic into an optical lens 70 as shown in fig. 8 to 10.
C. A forming step: referring to fig. 11, after the liquid plastic is cooled and plasticized in the mold cavity 50 to form the optical lens 70, the upper mold assembly 30 moves upward to separate from the lower mold assembly 20, so that the upper mold cavity 33 separates from the optical lens 70, and the lower mold assembly 20 moves toward the base 10, so that each of the ejecting pins 11 on the base 10 extends out of the lower mold cavity 23 through the corresponding through hole 24, so that the top end of each of the ejecting pins 11 simultaneously pushes against the bottom surface of the optical lens 70, so that the optical lens 70 is uniformly forced to separate from the lower mold cavity 23, thereby completing the manufacturing of the optical lens 70, wherein the optical lens 70 formed in the mold cavity 50 is as shown in fig. 12 and 13, and the optical lens 70 forms a first concave surface 71 and a second concave surface 72 with corresponding shapes on the bottom surface and the top surface respectively corresponding to the lower arc convex surface 231 and the upper arc 331, and a plurality of positioning convex surfaces 73 which are respectively corresponding to the shapes of the arc-shaped long grooves 232 of the lower die cavity 23 are convexly arranged at intervals on the bottom surface.
By the above technical means, when the optical lens manufacturing method and the manufacturing mold of the present invention are used, a plurality of through holes 24 with the same number as the number of the ejecting pins 11 of the base 10 are mainly formed in the lower mold core 22, so that after the liquid plastic is cooled and plasticized in the mold cavity 50 to form the optical lens 70, when the lower mold 21 moves toward the base 10, each ejecting pin 11 can extend into the lower mold cavity 23 through the corresponding through hole 24, and directly and simultaneously push against the bottom surface of the optical lens 70, so that the optical lens 70 can be separated from the lower mold cavity 23 under the condition of uniform stress, and therefore, the optical lens 70 does not generate the condition of stress concentration, the phenomenon of deformation (release phenomenon) of the optical lens 70 can be effectively avoided, the product yield of the optical lens 70 is greatly improved, and the probability of asymmetric surface precision of the aspheric surface of the optical lens 70 can be reduced, the optical lens 70 can provide a better imaging effect, and further, a plurality of positioning convex surfaces 73 corresponding to the shapes of the arc-shaped long grooves 232 of the lower die cavity 23 can be formed on the bottom surface of the optical lens 70 after the liquid plastic is cooled and plasticized in the die cavity 50, and when the optical lens 70 is combined with related optical equipment, each positioning convex surface 73 can provide a positioning effect as a reference surface for assembly, further, the lower die core 22 or the upper die core 32 of the manufacturing die is in an integrally formed structural form, so that accumulated tolerance generated during assembly can be effectively avoided, and accordingly, an optical lens manufacturing method, the manufacturing die and products thereof with average force application, difficult deformation and high yield are provided.
It should be understood, however, that there is no intent to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for manufacturing an optical lens, the manufacturing process of the method comprising:
a preparation step: preparing a manufacturing mold, wherein the manufacturing mold is provided with a base, a lower mold set, an upper mold set and an ejection head, the base is provided with at least three upright ejection pins which are arranged at intervals, the lower mold set is arranged above the base in a vertically movable manner and is provided with a lower mold and a lower mold core, the lower mold core is integrally formed and arranged in the lower mold and is provided with a lower mold cavity, at least three through holes and an injection port, the lower mold cavity is concavely arranged on the top surface of the lower mold core, a lower arc convex surface is formed at the center of the bottom surface of the lower mold cavity, at least three arc long grooves which are annularly arranged at intervals are concavely arranged on the outer periphery of the lower arc convex surface, a first-order surface is arranged between the lower arc convex surface and the at least three arc long grooves, the at least three through holes penetrate through the lower mold core at intervals and are communicated with the lower mold cavity, each through hole is respectively sleeved on one ejection pin of the base, and each through hole is respectively positioned between two, the pouring aperture penetrates through the outer surface of the lower die core in the radial direction and is communicated with the lower die cavity, the upper die group can be arranged above the lower die group in a relatively close or far way and is provided with an upper die and an upper die core, the upper die core is integrally formed and arranged in the upper die and is provided with an upper die cavity and a pouring inlet, the upper die cavity is concavely arranged on the bottom surface of the upper die core and is in accordance with the shape of the lower die cavity, the pouring aperture of the upper die core penetrates through the outer surface of the upper die core, which is close to the bottom surface, and the ejecting head can be movably arranged on one side of the lower die group and the upper die group and is internally provided with liquid plastic;
a processing step: moving the upper die set towards the lower die set to enable the upper die core to be attached to the lower die core, forming a die cavity between the upper die cavity and the lower die cavity, forming an injection hole communicated with the die cavity between the two pouring inlets, extending the injection head into the injection hole, injecting the liquid plastic into the die cavity, enabling the liquid plastic to fill the die cavity, and moving the injection head out of the injection hole after the die cavity is filled with the liquid plastic, so that the liquid plastic in the die cavity is cooled and plasticized into an optical lens; and
a forming step: after the liquid plastic is cooled and plasticized into the optical lens in the mold cavity, the upper mold assembly moves upwards to be separated from the lower mold assembly, so that the upper mold cavity is separated from the optical lens, the lower mold assembly moves towards the base, so that the ejection pins on the base extend out of the lower mold cavity through the corresponding through holes, the top ends of the ejection pins simultaneously push against the bottom surface of the optical lens, and the optical lens is uniformly stressed to be separated from the lower mold cavity, so that the manufacturing of the optical lens is completed.
2. The method of claim 1, wherein in the step of preparing, an upper convex surface is convexly formed downward at the center of the upper cavity.
3. The method for manufacturing an optical lens according to claim 2, wherein in the preparing step, four ejector pins are provided at intervals on the top surface of the base, four arc-shaped elongated slots are provided at intervals and in a circular arrangement in the lower cavity, and four through holes are provided in the lower mold core, the through holes being respectively coupled to the ejector pins of the base and located between the arc-shaped elongated slots.
4. A mold for manufacturing an optical lens, comprising:
the base is provided with at least three upright ejection pins which are arranged at intervals;
a lower die set, which is arranged above the base in a way of moving up and down and is provided with a lower die and a lower die core, wherein the lower die core is integrally formed and arranged in the lower die and is provided with a lower die cavity, at least three through holes and a pouring inlet, the lower die cavity is concavely arranged on the top surface of the lower die core, the lower die cavity forms a lower arc convex surface at the center of the bottom surface, at least three arc-shaped long grooves are concavely arranged on the outer periphery of the lower arc convex surface at intervals, a first-order surface is arranged between the lower arc convex surface and the at least three arc-shaped long grooves, the at least three through holes penetrate through the lower die core at intervals and are communicated with the lower die cavity, each through hole is respectively sleeved on one of the ejection pins of the base, each through hole is respectively positioned between two adjacent arc-shaped long grooves of the lower die cavity, and the pouring aperture penetrates through the outer surface of the lower;
the upper die set can be arranged above the lower die set in a relatively close or far way and is provided with an upper die and an upper die core, the upper die core is integrally formed and arranged in the upper die and is provided with an upper die cavity and a pouring inlet, the upper die cavity is concavely arranged on the bottom surface of the upper die core and is in accordance with the shape of the lower die cavity, and the pouring inlet of the upper die core penetrates through the outer surface of the upper die core close to the bottom surface in the radial direction; and
an ejection head movably disposed at one side of the lower module and the upper module and having liquid plastic therein.
5. The mold for manufacturing an optical lens according to claim 4, wherein a cavity is formed between the upper mold cavity and the lower mold cavity in a state where the upper mold core and the lower mold core are in abutment, and an injection hole communicating with the cavity is formed between the two pouring inlets, the injection head being capable of projecting into the injection hole.
6. The mold for manufacturing an optical lens as claimed in claim 4 or 5, wherein the upper cavity is provided with an upper arc convex surface protruding downwards at the center.
7. The mold for manufacturing an optical lens as claimed in claim 6, wherein the base has four ejection pins spaced apart from each other on a top surface thereof, the lower cavity has four arc-shaped slots spaced apart from each other and arranged in a ring shape, and the lower core has four through holes respectively coupled to the ejection pins of the base and located between the arc-shaped slots.
8. A mold for manufacturing an optical lens as claimed in claim 4 or 5, wherein the base has four ejection pins spaced apart from each other on the top surface thereof, the lower cavity has four arc-shaped slots spaced apart from each other and arranged in a ring shape, and the lower core has four through holes respectively coupled to the ejection pins of the base and located between the arc-shaped slots.
9. An optical lens produced by the optical lens production method according to any one of claims 1 to 3.
10. An optical lens manufactured by the method for manufacturing an optical lens according to claim 2 or 3, wherein the optical lens has a bottom surface and a top surface opposite to the lower arc convex surface and the upper arc convex surface respectively to form a first concave surface corresponding to the lower arc convex surface and a second concave surface corresponding to the upper arc convex surface, and a plurality of positioning convex surfaces corresponding to the arc long grooves of the lower cavity are convexly arranged at intervals on the bottom surface of the optical lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762864.1A CN106671354B (en) | 2015-11-11 | 2015-11-11 | Optical mirror slip manufacturing method, manufacture mold and products thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510762864.1A CN106671354B (en) | 2015-11-11 | 2015-11-11 | Optical mirror slip manufacturing method, manufacture mold and products thereof |
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| Publication Number | Publication Date |
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| CN106671354A CN106671354A (en) | 2017-05-17 |
| CN106671354B true CN106671354B (en) | 2019-09-13 |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100417612C (en) * | 2004-12-21 | 2008-09-10 | 亚洲光学股份有限公司 | Jetting out forming die of making rough convex not influence on assembly of finished product |
| CN101468870A (en) * | 2007-12-29 | 2009-07-01 | 鸿富锦精密工业（深圳）有限公司 | Mould for moulding glass lens and method for moulding glass lens |
| WO2010035619A1 (en) * | 2008-09-29 | 2010-04-01 | コニカミノルタオプト株式会社 | Method of producing objective lens for optical pickup, mold of objective lens for optical pickup, and objective lens for optical pickup |
| CN102081173A (en) * | 2009-11-30 | 2011-06-01 | 鸿富锦精密工业（深圳）有限公司 | Lens and die for manufacturing lens |
| CN205201990U (en) * | 2015-11-11 | 2016-05-04 | 伯特光电股份有限公司 | Optical glass and make mould thereof |
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