CN111196015B - Injection mold of optical lens - Google Patents
Injection mold of optical lens Download PDFInfo
- Publication number
- CN111196015B CN111196015B CN202010073557.3A CN202010073557A CN111196015B CN 111196015 B CN111196015 B CN 111196015B CN 202010073557 A CN202010073557 A CN 202010073557A CN 111196015 B CN111196015 B CN 111196015B
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- die
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- cavity
- mold
- injection
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- 230000003287 optical effect Effects 0.000 title claims abstract description 43
- 238000002347 injection Methods 0.000 title claims abstract description 34
- 239000007924 injection Substances 0.000 title claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 238000000465 moulding Methods 0.000 claims abstract description 17
- 238000001746 injection moulding Methods 0.000 claims description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 24
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000007747 plating Methods 0.000 claims description 9
- 239000012778 molding material Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 229910052759 nickel Inorganic materials 0.000 description 11
- 239000000463 material Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B29C45/17—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
- B29C45/0025—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
- B29C45/2606—Guiding or centering means
-
- 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
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
-
- 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
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
- B29C45/332—Mountings or guides therefor; Drives therefor
-
- 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
- B29C45/401—Ejector pin constructions or mountings
-
- 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
- B29C2045/0036—Submerged or recessed burrs
-
- 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
- B29C2045/4063—Removing or ejecting moulded articles preventing damage to articles caused by the ejector
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an injection mold of an optical lens, wherein the bottom of an upper mold is provided with a push-pull abdicating groove, a push-press plate is arranged in the push-pull abdicating groove, the bottom of the push-press plate is provided with an upper molding surface, the top of the push-press plate is connected with the push-pull abdicating groove through a first spring, the bottom of the upper mold is fixed with a linkage column, and the bottom of the linkage column is fixed with a magnet lifting column; the lower die is provided with a die cavity, the bottom of the die cavity is connected with a die core guide hole, the bottom of the die core guide hole is connected with a lifting cavity, a die core column is slidably connected in the die core guide hole, the top end of the die core column is provided with a lower forming surface, the bottom of the die core column is fixed with a top plate, a first magnetic metal sleeve is arranged in the top plate, the bottom of the top plate is connected with the lifting cavity through a second spring, and a linkage guide hole is further formed in the lower die. The invention can avoid the formation of burr and gap at the edge of the injection mold cavity, has high processing efficiency, and ensures that the surface of the produced optical lens is smooth and has no defects because the surface of the ejection structure is matched with the surface of the optical lens.
Description
Technical Field
The invention relates to an injection mold, and particularly discloses an injection mold for an optical lens.
Background
The optical lens is a transparent material having one or more curved surfaces and made of an optical material such as glass or resin, and is used for a structure such as an optical system. When an optical lens is manufactured using resin, it is necessary to use a mold to perform molding.
In the prior art, a mold for manufacturing an optical lens mainly comprises an upper mold and a lower mold which are respectively provided with an upper mold cavity and a lower mold cavity, when the mold is closed, the upper mold and the lower mold move close to each other, an injection mold cavity is formed after the upper mold cavity and the lower mold cavity are closed, the mold is opened after injection molding and cooling, the optical lens is ejected out by the ejection structure, the operation is complex, the ejection action is completed through an ejector pin which is arranged on the bottom surface of the lower mold cavity, a water gap is easily formed on the surface of the optical lens in the injection molding process, the performance is seriously affected, and in the ejection process, the ejector pin can easily scratch the surface of the optical lens to form defects.
Disclosure of Invention
Therefore, it is necessary to provide an injection mold for an optical lens, which is capable of preventing the surface of the optical lens from being damaged due to the stable and reliable mold closing and opening actions during the injection process, and the surface of the ejection structure is matched with the surface of the optical lens.
In order to solve the prior art problem, the invention discloses an injection mold of an optical lens, which comprises an upper backing plate, an upper mold, a lower mold and a lower backing plate, wherein an injection sprue gate is arranged in the upper backing plate, an injection molding material pipe penetrating through the upper mold is connected below the injection sprue gate, the bottom of the upper mold is provided with a push-pull abdicating groove, a push-pull plate is arranged in the push-pull abdicating groove, an injection abdicating channel is arranged in the push-pull plate, the injection molding material pipe is connected in the injection abdicating channel in a sliding manner, the bottom of the push-pull plate is provided with two upper molding surfaces, the top of the push-pull plate is connected with the bottom of the push-pull abdicating groove through a first spring, two opposite sides of the push-pull plate are respectively fixed with a limiting plate, two linkage columns with the radius of R are fixed at the bottom of the upper mold, a magnet lifting column with the radius of R is fixed at the bottom of each linkage column, and R is greater than R;
the lower die is provided with a die cavity, the bottom of the die cavity is connected with two die core guide holes, the bottoms of the two die core guide holes are connected with the same lifting cavity, die core columns are connected in the die core guide holes in a sliding mode, the top ends of the die core columns are provided with lower forming surfaces, the bottoms of the two die core columns are fixedly provided with top plates which are connected in the lifting cavity in a sliding mode, two limiting guide holes with the radius of R are arranged in the top plates, each limiting guide hole is fixedly provided with a first magnetic metal sleeve, each magnet lifting column is connected in the first magnetic metal sleeve in a sliding mode, the bottom of each top plate is connected with the bottom of the lifting cavity through at least two second springs, linkage guide holes with the bottom communicated with the lifting cavity are further arranged in the lower die, each linkage guide hole is of a cylindrical through hole structure with the radius of R, and each linkage column is connected in each linkage guide hole in a sliding mode.
Furthermore, the surface of the upper molding surface is provided with a first metal nickel plating layer.
Furthermore, a second metal nickel plating layer is arranged on the surface of the lower molding surface.
Furthermore, the bottom of the die cavity is provided with a shunting bulge, the shunting bulge is positioned between the two die core guide holes, the shunting bulge is provided with a shunting channel, and the two die core guide holes are respectively positioned at two ends of the die cavity.
Furthermore, a heat conduction copper column is arranged in the mold core column, and the bottom of the heat conduction copper column is fixedly connected with the top plate.
Furthermore, a second magnetism-attracting metal sleeve positioned in the lifting cavity is fixed on the lower base plate, and the bottom of the magnet lifting column is movable in the second magnetism-attracting metal sleeve.
Furthermore, an ejection guide post is fixed at the bottom of the top plate, an ejection guide hole communicated with the lifting cavity is formed in the lower base plate, and the ejection guide post is connected in the ejection guide hole in a sliding mode.
The invention has the beneficial effects that: the invention discloses an injection mold for optical lenses, which is provided with a reliable guiding and positioning structure, the actions of mold closing and mold opening in the injection molding process are stable and reliable, a push plate is pressed into a mold cavity after mold closing, can avoid the formation of rough edges and gaps at the edge of the injection molding cavity and the formation of rough edges at the edge of the optical lens, the reliable limit plate structure can ensure that the push plate is inserted into the die cavity to a proper depth, the position of the push plate can be effectively controlled, and when the die is closed, the position of mould benevolence post is fixed a position through the indirect realization of magnetism structure of inhaling, ensures that mould benevolence post position is stable, the structure of the die cavity of moulding plastics is reliable, can be simultaneously with the ejecting realization of optical lens take off the material during the die sinking, machining efficiency is high, in addition, the surface of ejecting structure matches with the surface of optical lens, can avoid ejecting in-process optical lens's surface to be damaged, can ensure that the optical lens surface of producing is smooth flawless.
Drawings
FIG. 1 is a schematic view of the structure of the present invention during clamping.
FIG. 2 is a schematic view of the mold opening of the present invention.
Fig. 3 is an enlarged schematic view of a in fig. 1 according to the present invention.
The reference signs are: the injection molding device comprises an upper padding plate 10, an injection molding pouring gate 11, an injection molding material pipe 12, an upper mold 20, a push-pull abdicating groove 21, a push-press plate 22, an injection abdicating channel 221, an upper molding surface 222, a first metal nickel plating layer 223, a first spring 23, a limiting plate 24, a linkage column 25, a magnet lifting column 251, a lower mold 30, a mold cavity 31, a mold core guide hole 311, a shunt bulge 312, a shunt channel 313, a lifting cavity 32, a mold core column 33, a lower molding surface 331, a second metal nickel plating layer 332, a top plate 34, a first magnetic-attracting metal sleeve 342, a second spring 35, a linkage guide hole 36, a heat-conducting copper column 37, an ejection guide column 38, a lower padding plate 40, a second magnetic-attracting metal sleeve 41 and an ejection guide hole 42.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Refer to fig. 1 to 3.
The embodiment of the invention discloses an injection mold of an optical lens, which comprises an upper backing plate 10, an upper mold 20, a lower mold 30 and a lower backing plate 40, wherein an injection sprue gate 11 is arranged in the upper backing plate 10, an injection material pipe 12 penetrating through the upper mold 20 is connected below the injection sprue gate 11, the injection material pipe 12 is fixed in the upper mold 20, the bottom of the upper mold 20 is provided with a push-pull abdicating groove 21, a push-press plate 22 is arranged in the push-pull abdicating groove 21, an injection abdicating channel 221 is arranged in the push-press plate 22, the injection material pipe 12 is slidably connected in the injection abdicating channel 221, the bottom of the push-press plate 22 is provided with at least two arc-shaped upper molding surfaces 222, the top of the push-press plate 22 is connected with the bottom of the top of the push-pull abdicating groove 21 through a first spring 23, two opposite sides of the push-press plate 22 are all fixed with a limiting plate 24, the limiting plates 24 are always positioned at two sides below the push-pull abdicating groove 21, the position of the push plate 22 can be limited through the limiting plates 24, two cylindrical linkage columns 25 with the radius of R are fixed at the bottom of the upper die 20, and a cylindrical magnet lifting column 251 with the radius of R is fixed at the bottom of each linkage column 25, wherein R is larger than R;
the lower die 30 is provided with a die cavity 31, the bottom of the die cavity 31 is connected with at least two die core guide holes 311, the bottoms of the two die core guide holes 311 are both connected with the same lifting cavity 32, a die core column 33 is connected in the die core guide hole 311 in a sliding manner, the top end of the die core column 33 is provided with an arc-shaped lower forming surface 331 facing the upper forming surface 222, the bottoms of the two die core columns 33 are fixed with a top plate 34 which is connected in the lifting cavity 32 in a sliding manner, a linkage column 25 is positioned above the top plate 34, two cylindrical limiting guide holes with the radius of r are arranged in the top plate 34, each limiting guide hole is fixed with a first magnetic-attracting metal sleeve 342, preferably, the first magnetic-attracting metal sleeve 342 can be a metal iron sleeve, a metal cobalt sleeve or a metal nickel sleeve, the magnet lifting column 251 is connected in the first magnetic-attracting metal sleeve 342 in a sliding manner, and the elasticity formed by the two second springs 35 is larger than the adsorption, the bottom of the top plate 34 is connected with the bottom of the lifting cavity 32 through at least two second springs 35, a linkage guide hole 36 is further formed in the lower die 30, the bottom of the linkage guide hole 36 is communicated with the lifting cavity 32, the linkage guide hole 36 is of a cylindrical through hole structure with the radius R, and the linkage column 25 is slidably connected in the linkage guide hole 36.
During injection molding, the upper die 20 moves close to the lower die 30, the pushing plate 22 is inserted into the die cavity 31, the first spring 23 is compressed, the limiting plate 24 is abutted between the upper die 20 and the lower die 30, the pushing plate 22 is inserted into the die cavity 31 to a proper depth, the linkage column 25 moves downwards along with the downward movement and pushes the top plate 34 downwards, the second spring 35 is compressed, the edge of the lower molding surface 331 at the top of the die core column 33 reaches the bottom surface of the die cavity 31, the first magnetic metal sleeve 342 is attracted and positioned by the magnet lifting column 251, so that the top plate 34 and the die core column 33 are positioned, the die core column 33 cannot be relatively displaced with the die cavity 31 under the action of no other excessive external force, the positions of cavity walls of the injection molding cavity can be ensured to be stable and firm during injection molding, and the injection molding cavity is formed among the die cavity 31, the pushing plate 22 and the die core column 33; molten material is input into an injection molding cavity from an injection molding sprue gate 11 through an injection molding abdicating channel 221, an optical lens is formed in the injection molding cavity after cooling, an upper mold 20 moves away from a lower mold 30, a pressing plate 22 is stably separated from the top of the optical lens under the action of elastic restoring force of a first spring 23, the damage to the structure of the optical lens due to overlarge mold opening action is avoided, an injection molding material pipe 12 rises relative to the pressing plate 22, the injection molding part is prevented from rising along with the rising, meanwhile, a linkage column 25 moves upwards to release a top plate 34, the top plate 34 rises under the action of the second springs 35 and ejects out the optical lens in a mold cavity 31 because the elastic acting force of the two second springs 35 is larger than the adsorption force formed between a first magnetic-philic metal sleeve 342 and a magnet lifting column 251, the demolding action is continuous and quick, no complex demolding operation is needed, and a lower molding surface 331 is completely attached to one surface of the optical lens, the surface that can avoid optical lens forms the mouth of a river because of the thimble, because precision requirements such as optical lens's surface smoothness are than higher, in case defects such as mouth of a river, mar appear, can seriously influence optical lens's performance.
In this embodiment, the surface of the upper molding surface 222 is provided with the first metal nickel plating layer 223, which is an electroplated nickel layer, and has high stability in air, effective resistance to corrosion by atmosphere, alkali and certain acids, and extremely small crystallization, and good polishing performance, and can obtain a mirror-like gloss appearance, and provide a smooth cavity wall for injection molding parts such as optical lenses, etc. which need a smooth surface, to ensure the effect of injection molding.
Based on the above embodiment, the surface of the lower molding surface 331 is provided with the second metal nickel plating layer 332, which is an electroplated nickel layer, and has high stability in air, effective resistance to corrosion by atmosphere, alkali and certain acids, extremely small crystallization, good polishing performance, mirror-like luster appearance, and capability of providing a smooth cavity wall for injection molding parts such as optical lenses, etc. which need a smooth surface, so as to ensure the effect of injection molding. The first metal nickel plating layer 223 and the second metal nickel plating layer 332 form the upper and lower surfaces of the optical lens, so that the smoothness of the light incident surface and the light emitting surface of the optical lens obtained by injection molding can meet the requirements.
In this embodiment, a shunting protrusion 312 is disposed at the bottom of the mold cavity 31, the shunting protrusion 312 is disposed between the two mold core guide holes 311, a shunting channel 313 is disposed on the shunting protrusion 312, the two mold core guide holes 311 are respectively disposed at two ends of the mold cavity 31, i.e., a part of the side wall of the mold core guide hole 311 is coplanar with the side wall of the mold cavity 31, when the mold is closed, the shunting channel 313 connects the two lower molding surfaces 331, i.e., the two lower molding surfaces 331 are respectively connected with a single mold cavity formed between the two upper molding surfaces 222 through the shunting channel 313.
In this embodiment, a heat conducting copper column 37 is arranged in the mold core column 33, the bottom of the heat conducting copper column 37 is fixedly connected with the top plate 34, pure copper has good heat conducting performance, and the heat conducting copper column 37 is arranged in the mold core column 33 supported by alloy and can effectively conduct heat of the mold core column 33, so that the cooling efficiency of a molten material in a mold cavity can be effectively improved, and the cooling forming speed is improved.
In this embodiment, the second magnetically-philic metal sleeve 41 located in the lifting cavity 32 is fixed on the lower padding plate 40, the bottom of the magnet lifting column 251 is movable in the second magnetically-philic metal sleeve 41, the second magnetically-philic metal sleeve 41 can effectively prevent the magnet lifting column 251 from shifting when lifting, in addition, the second magnetic metal sleeve can further limit the magnet lifting column 251 under different working conditions, and the sum of the adsorption forces between the second magnetically-philic metal sleeve 41 and the magnet lifting column 251 and between the first magnetically-philic metal sleeve 342 and the magnet lifting column 251 is smaller than the sum of the elastic forces of the two second springs 35.
In the present embodiment, the ejector guide post 38 is fixed to the bottom of the top plate 34, the lower backing plate 40 is provided with the ejector guide hole 42 communicating with the elevation cavity 32, and the ejector guide post 38 is slidably connected to the ejector guide hole 42, so that the stability of the elevation operation of the top plate 34 can be further improved.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. An injection mold for optical lenses comprises an upper backing plate (10), an upper mold (20), a lower mold (30) and a lower backing plate (40), and is characterized in that an injection sprue gate (11) is arranged in the upper backing plate (10), an injection molding material pipe (12) penetrating through the upper mold (20) is connected below the injection sprue gate (11), a push-pull abdicating groove (21) is arranged at the bottom of the upper mold (20), a push-pull plate (22) is arranged in the push-pull abdicating groove (21), an injection abdicating channel (221) is arranged in the push-pull plate (22), the injection molding pipe (12) is connected in the injection abdicating channel (221) in a sliding manner, two upper molding surfaces (222) are arranged at the bottom of the push-pull plate (22), the top of the push-pull plate (22) is connected with the groove bottom of the abdicating groove (21) through a first spring (23), and a limiting plate (24) is fixed at each of the opposite two sides of the push-pull plate (22), two linkage columns (25) with the radius of R are fixed at the bottom of the upper die (20), a magnet lifting column (251) with the radius of R is fixed at the bottom of each linkage column (25), and R is larger than R;
the lower die (30) is provided with a die cavity (31), the bottom of the die cavity (31) is connected with two die core guide holes (311), the bottoms of the two die core guide holes (311) are connected with the same lifting cavity (32), die core columns (33) are connected in the die core guide holes (311) in a sliding manner, the top ends of the die core columns (33) are provided with lower forming surfaces (331), the bottoms of the two die core columns (33) are fixedly provided with top plates (34) which are connected in the lifting cavity (32) in a sliding manner, two limiting guide holes with the radius of r are arranged in the top plates (34), each limiting guide hole is fixedly provided with a first magnetic-attracting metal sleeve (342), the magnet lifting columns (251) are connected in the first magnetic-attracting metal sleeves (342) in a sliding manner, the bottoms of the top plates (34) are connected with the bottoms of the lifting cavity (32) through at least two second springs (35), the lower die (30) is also internally provided with a linkage guide hole (36) the bottom of which is communicated with the lifting cavity (32), the linkage guide hole (36) is of a cylindrical through hole structure with the radius of R, and the linkage column (25) is connected in the linkage guide hole (36) in a sliding manner;
the bottom of die cavity (31) is equipped with reposition of redundant personnel bellying (312), reposition of redundant personnel bellying (312) are located two between mould benevolence guide hole (311), be equipped with reposition of redundant personnel runner (313) on reposition of redundant personnel bellying (312), two mould benevolence guide hole (311) are located respectively the both ends of die cavity (31).
2. An injection mould for an optical lens according to claim 1, characterised in that the surface of the upper forming surface (222) is provided with a first metallic nickel plating (223).
3. An injection mould for an optical lens according to claim 2, characterised in that the surface of the lower forming surface (331) is provided with a second metallic nickel coating (332).
4. The injection mold for optical lenses according to claim 1, wherein the mold core pillar (33) is provided therein with a heat conductive copper pillar (37), and a bottom of the heat conductive copper pillar (37) is fixedly connected to the top plate (34).
5. An injection mold for optical lens according to claim 1, characterized in that a second magnetically-attracting metal sleeve (41) located in the lifting cavity (32) is fixed on the lower backing plate (40), and the bottom of the magnet lifting column (251) is movable in the second magnetically-attracting metal sleeve (41).
6. An injection mold for optical lens according to claim 1, characterized in that the bottom of the top plate (34) is fixed with an ejector guide pillar (38), the lower pad plate (40) is provided with an ejector guide hole (42) communicated with the lifting cavity (32), and the ejector guide pillar (38) is slidably connected in the ejector guide hole (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010073557.3A CN111196015B (en) | 2020-01-22 | 2020-01-22 | Injection mold of optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN113787678B (en) * | 2021-08-31 | 2023-08-01 | 东莞晶彩光学有限公司 | Injection mold of multichannel lens and molding method thereof |
| JP2023049675A (en) * | 2021-09-29 | 2023-04-10 | キヤノン株式会社 | Lens, eyepiece optical system, and image display device |
| CN114801083A (en) * | 2022-04-18 | 2022-07-29 | 广东烨嘉光电科技股份有限公司 | Cylindrical surface resin lens injection mold |
| CN115256813B (en) * | 2022-07-12 | 2025-08-01 | 江西联益光学有限公司 | Optical lens injection mold assembly and injection molding method thereof |
| CN115246201B (en) * | 2022-07-12 | 2025-08-01 | 江西联益光学有限公司 | Optical lens injection mold and injection molding method thereof |
| CN115230086B (en) * | 2022-08-15 | 2026-04-07 | 台州市黄岩图灵塑模有限公司 | A support buckle injection mold |
| CN115742209A (en) * | 2022-10-27 | 2023-03-07 | 广东烨嘉光电科技股份有限公司 | Prevent lens injection molding machine of lens scratch damage |
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| CN101380802A (en) * | 2007-09-06 | 2009-03-11 | 鸿富锦精密工业（深圳）有限公司 | injection mold |
| CN207190149U (en) * | 2017-05-19 | 2018-04-06 | 天津市卓创盛模具有限公司 | A kind of precise injection mould |
| CN208697840U (en) * | 2018-04-24 | 2019-04-05 | 昆山沃海钢模科技有限公司 | A kind of bloom convenient for de- material is exempted to spray injection mold |
| CN209126095U (en) * | 2018-11-16 | 2019-07-19 | 东莞晶彩光学有限公司 | A kind of uniform moulding injection mold for optical mirror slip |
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| TWI660834B (en) * | 2018-06-22 | 2019-06-01 | 瑞皇精密工業股份有限公司 | Injection molding device and injection method thereof |
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| CN101380802A (en) * | 2007-09-06 | 2009-03-11 | 鸿富锦精密工业（深圳）有限公司 | injection mold |
| CN207190149U (en) * | 2017-05-19 | 2018-04-06 | 天津市卓创盛模具有限公司 | A kind of precise injection mould |
| CN208697840U (en) * | 2018-04-24 | 2019-04-05 | 昆山沃海钢模科技有限公司 | A kind of bloom convenient for de- material is exempted to spray injection mold |
| CN209126095U (en) * | 2018-11-16 | 2019-07-19 | 东莞晶彩光学有限公司 | A kind of uniform moulding injection mold for optical mirror slip |
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Effective date of registration: 20231109 Address after: 311800 78 Zhancheng Avenue, Taozhu street, Zhuji City, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Yejia Optoelectronics Technology Co.,Ltd. Address before: 523857 Room 203, building a, No.1 Dongyi street, Xingfa North Road, Wusha community, Chang'an Town, Dongguan City, Guangdong Province Patentee before: Dongguan Jiayu Optical Technology Co.,Ltd. |