CN114889055B - Secondary injection molding die for optical resin lens - Google Patents
Secondary injection molding die for optical resin lens Download PDFInfo
- Publication number
- CN114889055B CN114889055B CN202210441858.6A CN202210441858A CN114889055B CN 114889055 B CN114889055 B CN 114889055B CN 202210441858 A CN202210441858 A CN 202210441858A CN 114889055 B CN114889055 B CN 114889055B
- Authority
- CN
- China
- Prior art keywords
- plate
- die
- lower die
- injection molding
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 71
- 239000011347 resin Substances 0.000 title claims abstract description 22
- 229920005989 resin Polymers 0.000 title claims abstract description 22
- 230000003287 optical effect Effects 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims description 35
- 239000000110 cooling liquid Substances 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims 1
- 230000009471 action Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000025 natural resin Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000218631 Coniferophyta Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B29C45/64—Mould opening, closing or clamping devices
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
-
- 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a secondary injection molding die for an optical resin lens, which comprises an upper die structure and a lower die structure, wherein the upper die structure comprises an upper base plate, a cooling plate and an upper template which are sequentially connected from top to bottom; the upper template is provided with a plurality of upper die cavities; the lower die structure sequentially comprises a lower die plate, a lower base plate, a lower push plate and a bottom plate from top to bottom; the bottom plate is connected with the lower push plate through a lifting structure, a rotating motor is arranged on the lower surface of the lower base plate, the power output end of the rotating motor is connected with a rotating shaft, and the rotating shaft is connected with the lower template; push rods are arranged on two opposite sides of the upper surface of the lower push plate, which correspond to the two sub-channels B; the upper surface of the lower die plate is provided with lower die holders corresponding to the upper die cavities, and the upper surface of the lower die holder is higher than the upper surface of the lower die plate; a forming cavity is arranged in the lower die holder, and a forming template is arranged in the forming cavity. And a set of dies are used for forming two injection molding actions, so that the production efficiency is ensured on one hand, and the injection molding quality of lens products is ensured on the other hand.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a secondary injection molding mold for an optical resin lens.
Background
The resin lens is made of organic material, and has a polymer chain structure connected to form stereo net structure, relatively relaxed intermolecular structure and relatively displaced space between molecular chains. The light transmittance is 84% -90%, the light transmittance is good, and the optical resin lens has strong impact resistance. Resins can be classified into natural resins and synthetic resins. Natural resins are hydrocarbon (hydrocarbon) secretions from a variety of plants, particularly conifers. Because of its particular chemical structure, it is important to be able to be used as a latex paint and an adhesive. Since it is a mixture of various polymer compounds, the melting points are also different. Resins are very various and are widely used in light and heavy industries, and are often seen in daily life, such as plastics, resin glasses, paints, and the like. Resin lenses are lenses which are chemically synthesized by using resin as a raw material and are formed by processing and polishing.
In the optical resin lens production process, the injection mold is generally adopted for molding, and for some products needing multiple injection molding, multiple sets of mold molding can be separated, namely, after primary injection molding is carried out in the mold A, the products are transferred to the mold B for secondary injection molding, and the like, the process is complex, the production efficiency is low, and in addition, the quality of the lens products is easily influenced in the process of transferring the lens products, so that the quality of the products is difficult to guarantee. In view of this, improvements are needed.
Disclosure of Invention
Accordingly, the present invention is directed to a secondary injection molding mold for an optical resin lens, which is capable of ensuring the production efficiency and the injection molding quality of a lens product by forming two injection molding operations through a set of molds.
The invention provides a secondary injection molding die for an optical resin lens, which comprises an upper die structure and a lower die structure, wherein the upper die structure comprises an upper base plate, a cooling plate and an upper template which are sequentially connected from top to bottom; the upper base plate is provided with an injection molding main runner, two split runners A communicated with the injection molding main runner are arranged on the same side in the cooling plate, and two split runners B communicated with the split runners A are arranged on the same side in the upper die plate; the upper die plate is provided with a plurality of upper die cavities; the lower die structure sequentially comprises a lower die plate, a lower base plate, a lower push plate and a bottom plate from top to bottom; the bottom plate is connected with the lower push plate through a lifting structure, and the bottom plate is fixedly connected with the lower base plate through a support column so as to form a spacing space; the support column penetrates through the lower pushing plate; a spacing space is formed between the lower base plate and the lower pushing plate, and a spacing space is formed between the lower template and the lower base plate; a rotating motor is arranged on the lower surface of the lower base plate, a power output end of the rotating motor is connected with a rotating shaft, and the rotating shaft penetrates through the lower base plate and is connected with the lower template; push rods are arranged on two opposite sides of the upper surface of the lower push plate, which correspond to the two diversion channels B; the upper surface of the lower die plate is provided with a lower die base at the position corresponding to each upper die cavity, and the upper surface of the lower die base is higher than the upper surface of the lower die plate; a forming cavity is formed in the lower die holder, and a forming template is arranged in the forming cavity; the depth of the forming cavity is larger than the thickness of the forming template; after the die is closed, the upper die cavity and the molding template form an injection molding cavity; the bottom of the molding template is coaxially connected with a push rod corresponding to the push rod, and the push rod are coaxially arranged; the ejector rod sequentially penetrates through the lower die holder and the lower die plate and extends out of the lower die plate; buffer inner cavities are formed on the two opposite sides in the lower die plate and positioned on the lower surface of the lower die holder; a limiting boss A is fixedly arranged on the outer side surface of the part of the ejector rod, which is positioned in the buffer inner cavity; the height of the buffer inner cavity is set to be M, and the thickness of the limit boss A is set to be N, wherein M is more than N; buffer springs are arranged in the buffer inner cavity and positioned on the upper surface and the lower surface of the limiting boss A; when the molding template is at the maximum ejected height, the molding template is higher than the upper surface of the lower die holder; the resilience force of the buffer spring at the upper part is larger than that of the buffer spring at the lower part; when the ejector rod and the push rod are in a non-contact state, the buffer spring positioned above is abutted against the limit boss A so as to promote the buffer spring positioned below to be in a compressed state, and meanwhile, the forming template is positioned at the lowest position in the forming cavity; a cooling liquid storage cavity is formed in the other side, opposite to the flow dividing channel B, of the upper die plate, a liquid inlet is formed in one side of the cooling liquid storage cavity, and a liquid outlet is formed in the other side of the cooling liquid storage cavity; the liquid inlet is connected with a cooling liquid supply source through a pipeline, and the liquid outlet is connected with a cooling liquid recovery cavity.
As a preferable scheme, the lifting structure comprises a lifting motor and a lifting shaft, wherein the lifting motor is arranged on the bottom plate, one end of the lifting shaft is connected with the power output end of the lifting motor, and the other end of the lifting shaft is connected with the bottom of the lower pushing plate.
As a preferable scheme, the outer side surface of the lower die holder is provided with external threads, the positions of the lower die plate corresponding to the lower die holder are provided with abdication grooves, and the inner side walls of the abdication grooves are provided with internal threads matched with the external threads.
Preferably, a guiding groove for the push rod to be inserted is formed in the bottom of the push rod.
As a preferable scheme, a limit boss B is formed on the outer side surface of the bottom of the ejector rod.
As a preferable scheme, the bottom of the forming template is provided with a mounting seat, the bottom of the mounting seat is connected with a positioning bolt, and the upper surface of the ejector rod is provided with a bolt groove for connecting the positioning bolt.
Preferably, the diameter of the molding die plate is equal to the inner diameter of the molding cavity.
Preferably, the outer diameter of the limiting boss A is equal to the inner diameter of the buffer inner cavity.
Preferably, the inner groove wall of the guide groove is provided with a silica gel sleeve.
As a preferable scheme, the number of the upper die cavities is set to be 4, and the upper die cavities are uniformly distributed on the lower surface of the upper die plate; the number of the lower die holders is set to be 4, and the lower die holders are uniformly distributed on the upper surface of the lower die plate.
The beneficial effects of the invention are as follows: when the first injection molding is carried out, the push plate drives the push rod to contact with the push rod and move the push rod upwards by a preset stroke, the push rod synchronously drives the molding template to move upwards to a preset position, then the mold is closed for injection molding, after the injection molding actions of the first two injection molding cavities are completed, the push plate descends to a position separated from the contact with the push rod, then the lower template rotates 180 DEG, the first two lower mold bases after the first injection molding is completed are positioned below the cooling liquid storage cavity, and after the mold is closed, the cooling is carried out through the cooling liquid storage cavity, so that the preparation for the second injection molding is carried out; then, the injection molding action is carried out on the two injection molding cavities, at the moment, the push rod is driven by the lower push plate to contact with the push rod and move the push rod upwards by a set stroke, the push rod synchronously drives the molding template to move upwards to a set position, then the mold is closed for injection molding, and after the injection molding action of the two injection molding cavities is finished, the lower push plate is continuously lowered to a position which is separated from the contact with the push rod; the lower die plate rotates 180 degrees again and then is matched with the die, the two front lower die holders are subjected to secondary injection molding, and meanwhile, the two lower die holders are positioned below the cooling liquid storage cavity after the die matching and are cooled through the cooling liquid storage cavity; after the secondary injection molding is finished on the first two lower die holders, the lower die plates are closed after rotating 180 degrees again, the second injection molding is carried out on the second two lower die holders, and meanwhile, the first two lower die holders are positioned below the cooling liquid storage cavity and cooled through the cooling liquid storage cavity; through such structure setting, realize forming twice injection moulding action through a set of mould, ensure production efficiency on the one hand, on the other hand ensures the injection moulding quality of lens product.
Drawings
Fig. 1 is a first cross-sectional view of the present invention (showing the relative structural relationship of the lower die holder, lower die plate, ejector pin, and push rod).
Fig. 2 is a second cross-sectional view of the present invention (showing the relative structural relationship of the rotating electric machine, the rotating shaft, the lower die plate, and the lower pad).
Fig. 3 is a third cross-sectional view of the present invention (showing the coolant reservoir).
FIG. 4 is a schematic diagram of the present invention in a clamped state.
Fig. 5 is a top view of the lower die plate.
Fig. 6 is a bottom view of the upper die plate.
Fig. 7 is an enlarged view showing the relative structural relationship of the lower die holder, lower die plate, ejector pin, and ejector rod.
Fig. 8 is an exploded view showing the relative structural relationship of the forming die plate and the ejector pins.
The reference numerals are: the upper die structure 10, the lower die structure 11, the upper backing plate 12, the cooling plate 13, the upper die plate 14, the lower die holder 15, the lower die plate 16, the lower backing plate 17, the lower push plate 18, the bottom plate 19, the lifting motor 2, the lifting shaft 20, the supporting column 22, the push rod 23, the rotating motor 24, the guide groove 25, the limiting boss B26, the push rod 27, the rotating shaft 28, the limiting boss A29, the buffer cavity 30, the buffer spring 31, the molding die plate 32, the molding cavity 33, the upper die cavity 34, the split channel A36, the split channel B35, the injection molding main channel 37, the cooling liquid storage cavity 38, the liquid inlet 39, the liquid outlet 40, the positioning bolt 41, the mounting seat 42, the bolt groove 43, the injection molding cavity 44 and the silica gel sleeve 45.
Detailed Description
The invention will be further described in detail with reference to the following detailed description and the accompanying drawings, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1-8, a secondary injection molding mold for an optical resin lens includes an upper mold structure 10 and a lower mold structure 11, wherein the upper mold structure 10 includes an upper backing plate 12, a cooling plate 13 and an upper mold plate 14 sequentially connected from top to bottom; the upper base plate 12 is provided with an injection molding main runner 37, two diversion runners A36 communicated with the injection molding main runner 37 are arranged on the same side in the cooling plate 13, and two diversion runners B35 communicated with the diversion runners A36 are arranged on the same side in the upper template 14; the upper platen 14 is provided with a plurality of upper mold cavities 34; the lower die structure 11 sequentially comprises a lower die plate 16, a lower backing plate 17, a lower push plate 18 and a bottom plate 19 from top to bottom; the bottom plate 19 is connected with the lower push plate 18 through a lifting structure, the lifting structure comprises a lifting motor 21 and a lifting shaft 20, the lifting motor 21 is arranged on the bottom plate 19, one end of the lifting shaft 20 is connected with the power output end of the lifting motor 21, and the other end of the lifting shaft 20 is connected with the bottom of the lower push plate 18. The bottom plate 19 and the lower backing plate 17 are fixedly connected through a support column 22 so as to form a spacing space; the support column 22 extends through the lower push plate 18; a space is formed between the lower backing plate 17 and the lower push plate 18, and a space is formed between the lower template 16 and the lower backing plate 17; the lower surface of the lower backing plate 17 is provided with a rotating motor 24, the power output end of the rotating motor 24 is connected with a rotating shaft 28, and the rotating shaft 28 penetrates through the lower backing plate 17 and is connected with the lower template 18; push rods 23 are arranged on two opposite sides of the upper surface of the lower push plate 18, which correspond to the two sub-channels B35. The upper surface of the lower die plate 16 and the corresponding positions of the upper die cavities 34 are respectively provided with a lower die base 15, and the upper surface of the lower die base 15 is higher than the upper surface of the lower die plate 16; a molding cavity 33 is provided in the lower die holder 15, and a molding die plate 32 is provided in the molding cavity 33. The number of the upper die cavities 34 is set to be 4, and the upper die cavities are uniformly distributed on the lower surface of the upper die plate 14; the number of the lower die holders 15 is set to be 4, and the lower die holders are uniformly distributed on the upper surface of the lower die plate 16.
The depth of the molding cavity 33 is greater than the thickness of the molding die plate 32; the diameter of the molding die plate 32 is equal to the inner diameter of the molding cavity 33. After closing, the upper mold cavity 34 and the molding die plate 32 form an injection molding cavity 44; the bottom of the molding template 32 is coaxially connected with a push rod 27 corresponding to the push rod 23, and the push rod 23 and the push rod 27 are coaxially arranged; the ejector rod 27 sequentially penetrates through the lower die holder 15 and the lower die plate 16 and extends out of the lower die plate 16; buffer cavities 30 are formed on opposite sides in the lower die plate 16 and on the lower surface of the lower die holder 15; a limiting boss A29 is fixedly arranged on the outer side surface of the part of the ejector rod 27, which is positioned in the buffer cavity 30; the height of the buffer cavity 30 is set as M, and the thickness of the limit boss A29 is set as N, wherein M is more than N; buffer springs 31 are arranged in the buffer inner cavity 30 and positioned on the upper surface and the lower surface of the limit boss A29; when the molding die plate 32 is at the maximum ejected height, the molding die plate 32 is higher than the upper surface of the lower die holder 15; the resilience of the buffer spring 31 at the upper side is greater than that of the buffer spring 31 at the lower side; when the ejector rod 27 and the push rod 23 are in a non-contact state, the buffer spring 31 positioned above presses the limit boss A29 so as to promote the buffer spring 31 positioned below to be in a compressed state, and meanwhile, the forming die plate 32 is positioned at the lowest position in the forming cavity 33.
A cooling liquid storage cavity 38 is arranged at the other side of the upper template 14 opposite to the sub-runner B35, a liquid inlet 39 is arranged at one side of the cooling liquid storage cavity 38, and a liquid outlet 40 is arranged at the other side of the cooling liquid storage cavity 38; the liquid inlet 39 is connected to a cooling liquid supply source through a pipe, and the liquid outlet 40 is connected to a cooling liquid recovery chamber.
As a preferred embodiment, the outer side surface of the lower die holder 15 is formed with external threads, the positions of the lower die plate 16 corresponding to the lower die holder 15 are provided with relief grooves, and the inner side walls of the relief grooves are formed with internal threads matched with the external threads. Through such a structural arrangement, the lower die holder 15 is convenient to disassemble, clean and maintain, and is simple and convenient to operate.
As a preferred embodiment, a guide groove 25 into which the push rod 23 is inserted is opened at the bottom of the push rod 27. Ensure that the push rod 23 can be stably contacted with the push rod 27, and ensure the machining precision.
As a preferred embodiment, a limit boss B26 is formed on the outer side surface of the bottom of the ejector rod 27, so as to avoid excessive ejection of the forming die plate 32 when the equipment fails.
As a preferred embodiment, the bottom of the molding die plate 32 is provided with a mounting seat 42, the bottom of the mounting seat 42 is connected with a positioning bolt 41, and the upper surface of the ejector rod 27 is provided with a bolt groove 43 for the positioning bolt to be connected. Through such a structural arrangement, the forming die plate 32 is convenient to detach for cleaning and maintenance, and the operation is simple and convenient.
As a preferred embodiment, the outer diameter of the limiting boss a29 is equal to the inner diameter of the buffer cavity 30, so that the ejector rod 27 is ensured not to shake in the process of up-down displacement, and the injection molding precision is ensured.
As a preferred embodiment, the inner groove wall of the guide groove 25 is provided with a silica gel sleeve 45 to enhance the stability of the push rod 23 when it contacts the push rod 27.
The first injection molding: the lower push plate drives the push rod to contact with the push rod and move the push rod upwards by a preset stroke, and after the push rod synchronously drives the molding template to move upwards to a preset position, the upper die structure 10 is driven by the driving component to descend for die assembly and injection molding; after the injection molding actions of the first two injection molding cavities are completed, the upper die structure 10 moves upwards to reset, the lower push plate descends to a position separated from contact with the ejector rod, and the rotary motor 24 drives the lower die plate to rotate 180 degrees through the rotary shaft, so that the first two lower die holders for completing the first injection molding are positioned below the cooling liquid storage cavity, and the cooling liquid storage cavity is used for cooling after the second injection molding is completed, so that preparation is made for the secondary injection molding. Then, the injection molding action is carried out on the two later injection molding cavities, at the moment, the push rod is driven by the lower push plate to contact with the push rod and move the push rod upwards by a preset stroke, after the push rod synchronously drives the molding template to move upwards to a preset position, the upper die structure 10 is driven by the driving component to descend for die assembly injection molding, after the injection molding action of the two later injection molding cavities is finished, the lower push plate continues to descend to a position separated from the contact with the push rod, the upper die structure 10 moves upwards for reset, the lower template rotates 180 degrees again, the two later injection molding cavities are positioned below the cooling liquid storage cavity, and the two former injection molding cavities return to the position to be molded again.
And (3) during secondary injection molding: the upper die structure 10 is driven by the driving component to descend for die assembly injection molding, the first two lower die holders are subjected to secondary injection molding, and meanwhile, the two lower die holders are positioned below the cooling liquid storage cavity after die assembly and are cooled through the cooling liquid storage cavity; after the secondary injection molding is finished on the current two lower die holders, the lower die plate is closed after rotating 180 degrees again, the secondary injection molding is carried out on the next two lower die holders, and meanwhile, the first two lower die holders are located below the cooling liquid storage cavity and are cooled through the cooling liquid storage cavity.
After the secondary injection molding is completed, the push plate drives the push rod to contact with the push rod and the push rod is lifted up by a set stroke, so that the molding template 32 is higher than the position of the lower die holder 15, and the material taking is facilitated.
Through such structure setting, realize forming twice injection moulding action through a set of mould, ensure production efficiency on the one hand, on the other hand ensures the injection moulding quality of lens product.
The above examples illustrate only one embodiment of the invention, which is described in more detail and is not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. The secondary injection molding die for the optical resin lens comprises an upper die structure (10) and a lower die structure (11), wherein the upper die structure (10) comprises an upper base plate (12), a cooling plate (13) and an upper die plate (14) which are sequentially connected from top to bottom; the upper base plate (12) is provided with an injection molding main runner (37), two split runners A (36) communicated with the injection molding main runner (37) are arranged on the same side in the cooling plate (13), and two split runners B (35) communicated with the split runners A (36) are arranged on the same side in the upper die plate (14); the upper die plate (14) is provided with a plurality of upper die cavities (34); the lower die structure (11) sequentially comprises a lower die plate (16), a lower base plate (17), a lower push plate (18) and a bottom plate (19) from top to bottom; the method is characterized in that:
the bottom plate (19) is connected with the lower push plate (18) through a lifting structure, and the bottom plate (19) is fixedly connected with the lower base plate (17) through a support column (22) so as to form a spacing space; the support column (22) penetrates through the lower push plate (18); a spacing space is formed between the lower base plate (17) and the lower pushing plate (18), and a spacing space is formed between the lower template (16) and the lower base plate (17); a rotary motor (24) is arranged on the lower surface of the lower base plate (17), a power output end of the rotary motor (24) is connected with a rotating shaft (28), and the rotating shaft (28) penetrates through the lower base plate (17) and is connected with the lower die plate (16); push rods (23) are arranged on two opposite sides of the upper surface of the lower push plate (18) corresponding to the two diversion channels B (35);
the upper surface of the lower die plate (16) is provided with a lower die base (15) at the position corresponding to each upper die cavity (34), and the upper surface of the lower die base (15) is higher than the upper surface of the lower die plate (16); a forming cavity (33) is formed in the lower die holder (15), and a forming template (32) is arranged in the forming cavity (33); the depth of the molding cavity (33) is greater than the thickness of the molding template (32); after the die is closed, the upper die cavity (34) and the molding template (32) form an injection molding cavity (44); the bottom of the molding template (32) is coaxially connected with a push rod (27) corresponding to the push rod (23), and the push rod (23) and the push rod (27) are coaxially arranged; the ejector rod (27) sequentially penetrates through the lower die holder (15) and the lower die plate (16) and extends out of the lower die plate (16); buffer inner cavities (30) are formed on the opposite sides in the lower die plate (16) and positioned on the lower surface of the lower die holder (15); a limiting boss A (29) is fixedly arranged on the outer side surface of the part of the ejector rod (27) positioned in the buffer inner cavity (30); the height of the buffer cavity (30) is set to be M, and the thickness of the limit boss A (29) is set to be N, wherein M is more than N; buffer springs (31) are arranged in the buffer inner cavity (30) and positioned on the upper surface and the lower surface of the limit boss A (29); when the molding template (32) is at the maximum ejected height, the molding template (32) is higher than the upper surface of the lower die holder (15); the resilience force of the buffer spring (31) at the upper part is larger than that of the buffer spring (31) at the lower part; when the ejector rod (27) and the push rod (23) are in a non-contact state, the buffer spring (31) positioned above pushes the limit boss A (29) so as to enable the buffer spring (31) positioned below to be in a compressed state, and meanwhile, the forming template (32) is positioned at the lowest position in the forming cavity (33);
a cooling liquid storage cavity (38) is formed in the other side, opposite to the flow dividing channel B (35), of the upper die plate (14), a liquid inlet (39) is formed in one side of the cooling liquid storage cavity (38), and a liquid outlet (40) is formed in the other side of the cooling liquid storage cavity (38); the liquid inlet (39) is connected with a cooling liquid supply source through a pipeline, and the liquid outlet (40) is connected with a cooling liquid recovery cavity;
an external thread is formed on the outer side surface of the lower die holder (15), a yielding groove is formed in the position, corresponding to the lower die holder (15), of the lower die plate (16), and an internal thread matched with the external thread is formed on the inner side wall of the yielding groove;
a limiting boss B (26) is formed on the outer side surface of the bottom of the ejector rod (27);
the bottom of shaping template (32) is provided with mount pad (42), the bottom of mount pad (42) is connected with positioning bolt (41), the upper surface of ejector pin (27) is provided with confession positioning bolt connection's bolt groove (43).
2. The optical resin lens secondary injection molding die according to claim 1, wherein: the lifting structure comprises a lifting motor (21) and a lifting shaft (20), wherein the lifting motor (21) is installed on the bottom plate (19), one end of the lifting shaft (20) is connected with the power output end of the lifting motor (21), and the other end of the lifting shaft (20) is connected with the bottom of the lower pushing plate (18).
3. The optical resin lens secondary injection molding die according to claim 1, wherein: the bottom of the push rod (27) is provided with a guide groove (25) for the push rod (23) to be inserted.
4. The optical resin lens secondary injection molding die according to claim 1, wherein: the diameter of the molding die plate (32) is equal to the inner diameter of the molding cavity (33).
5. The optical resin lens secondary injection molding die according to claim 1, wherein: the outer diameter of the limit boss A (29) is equal to the inner diameter of the buffer inner cavity (30).
6. A secondary injection molding die for an optical resin lens according to claim 3, wherein: the inner groove wall of the guide groove (25) is provided with a silica gel sleeve (45).
7. The optical resin lens secondary injection molding die according to any one of claims 1 to 6, wherein: the number of the upper die cavities (34) is set to be 4, and the upper die cavities are uniformly distributed on the lower surface of the upper die plate (14); the number of the lower die holders (15) is set to be 4, and the lower die holders are uniformly distributed on the upper surface of the lower die plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210441858.6A CN114889055B (en) | 2022-04-25 | 2022-04-25 | Secondary injection molding die for optical resin lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210441858.6A CN114889055B (en) | 2022-04-25 | 2022-04-25 | Secondary injection molding die for optical resin lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114889055A CN114889055A (en) | 2022-08-12 |
| CN114889055B true CN114889055B (en) | 2023-11-17 |
Family
ID=82718291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210441858.6A Active CN114889055B (en) | 2022-04-25 | 2022-04-25 | Secondary injection molding die for optical resin lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114889055B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012111381A1 (en) * | 2011-02-18 | 2012-08-23 | 南部化成株式会社 | Rotary injection molding machine for multilayer molded article, method for molding multilayer molded article, and multilayer molded article |
| CN211842964U (en) * | 2019-12-27 | 2020-11-03 | 福州兴创云达新材料科技有限公司 | Mould for in-mould decoration injection moulding |
| CN212045827U (en) * | 2020-02-20 | 2020-12-01 | 东莞晶彩光学有限公司 | Step-by-step molding optical lens injection mold |
| CN212764437U (en) * | 2020-08-07 | 2021-03-23 | 温州宏福模具制造有限公司 | EVA2 two-time molding die |
| CN112810037A (en) * | 2020-12-28 | 2021-05-18 | 路焕 | Miniature injection mold rotary mechanism |
| CN213412722U (en) * | 2020-08-11 | 2021-06-11 | 厦门腾诺光学科技有限公司 | Car house lens device of moulding plastics |
| CN214726040U (en) * | 2021-01-22 | 2021-11-16 | 广东烨嘉光电科技股份有限公司 | Multi-cavity injection mold for producing optical lenses |
-
2022
- 2022-04-25 CN CN202210441858.6A patent/CN114889055B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012111381A1 (en) * | 2011-02-18 | 2012-08-23 | 南部化成株式会社 | Rotary injection molding machine for multilayer molded article, method for molding multilayer molded article, and multilayer molded article |
| CN211842964U (en) * | 2019-12-27 | 2020-11-03 | 福州兴创云达新材料科技有限公司 | Mould for in-mould decoration injection moulding |
| CN212045827U (en) * | 2020-02-20 | 2020-12-01 | 东莞晶彩光学有限公司 | Step-by-step molding optical lens injection mold |
| CN212764437U (en) * | 2020-08-07 | 2021-03-23 | 温州宏福模具制造有限公司 | EVA2 two-time molding die |
| CN213412722U (en) * | 2020-08-11 | 2021-06-11 | 厦门腾诺光学科技有限公司 | Car house lens device of moulding plastics |
| CN112810037A (en) * | 2020-12-28 | 2021-05-18 | 路焕 | Miniature injection mold rotary mechanism |
| CN214726040U (en) * | 2021-01-22 | 2021-11-16 | 广东烨嘉光电科技股份有限公司 | Multi-cavity injection mold for producing optical lenses |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114889055A (en) | 2022-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213107905U (en) | Mould positioning device | |
| CN114889055B (en) | Secondary injection molding die for optical resin lens | |
| CN212979125U (en) | A ejecting structure for injection mold | |
| CN110712342A (en) | In-mold rotary type double-color injection mold | |
| CN214056248U (en) | Injection mold convenient for demolding | |
| CN204955305U (en) | Modularization bottle lid mould | |
| CN212097368U (en) | Curved surface piece injection mold capable of achieving rapid demolding | |
| CN210590229U (en) | Rotary injection mold | |
| CN217495075U (en) | Resin lens injection mold with drawing of patterns cooling device | |
| CN112677400A (en) | Full-automatic injection molding machine of carousel formula handle of a knife | |
| CN218083892U (en) | Electric connector plastic injection mold capable of realizing rapid demolding | |
| CN217944199U (en) | Suction nozzle manufacturing mold | |
| CN216032198U (en) | Spring cavity type injection mold | |
| CN210552662U (en) | Positioning mechanism for injection molding of injection molding machine | |
| CN210817299U (en) | Automatic mold jacking device of wax injection machine | |
| CN217704507U (en) | Rotary pouring gate structure of injection mold | |
| CN220904074U (en) | Bottleneck positioning device of PET bottle blowing machine | |
| CN216609918U (en) | Mold ejection assembly for water outlet nozzle production | |
| CN209920459U (en) | But quick replacement's mold core mold insert mechanism | |
| CN211993999U (en) | Injection mold for anti-electric shock ferrule socket | |
| CN215434796U (en) | Oblique point glue feeding structure | |
| CN220052696U (en) | Plastic mould for optical lens barrel | |
| CN211467375U (en) | Injection mold capable of being cooled rapidly | |
| CN219213897U (en) | Full-computer injection molding machine with injection molding template convenient to replace | |
| CN216001255U (en) | High-density molding optical lens injection mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |