CN221584440U - Injection molding die for large-size aspheric double convex lens - Google Patents
Injection molding die for large-size aspheric double convex lens Download PDFInfo
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- CN221584440U CN221584440U CN202323651747.7U CN202323651747U CN221584440U CN 221584440 U CN221584440 U CN 221584440U CN 202323651747 U CN202323651747 U CN 202323651747U CN 221584440 U CN221584440 U CN 221584440U
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- runner
- die
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- cooling flow
- lens
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 102
- 239000002893 slag Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000003287 optical effect Effects 0.000 abstract description 6
- 229920013617 polymethylmethyacrylimide Polymers 0.000 abstract description 5
- 239000011521 glass Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000012797 qualification Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a large-size aspherical double convex mirror injection molding die which comprises an upper cover, an upper die, a lower die, a base, a feeding runner group, a first cooling runner, a second cooling runner, a third cooling runner, a fourth cooling runner, a fifth cooling runner, a sixth cooling runner and a seventh cooling runner. The injection molding device has the advantages that the volume shrinkage of the injection biconvex lens is reasonably compensated through the design of the high-temperature group and the low-temperature group of the waterway in the mold, the outline of the aspheric optical surface is guaranteed, the product percent of pass is high, the production efficiency is high, the injection large-size aspheric PMMI biconvex lens is produced in quantity, and compared with the existing glass convex lens, the injection molding device is lighter in weight and low in cost.
Description
Technical Field
The utility model relates to a large-size aspherical double convex mirror injection molding die.
Background
At present, a large-size aspheric double convex lens is formed by grinding glass, so that the production efficiency is low, and the weight is large compared with that of optical plastics with the same volume; but the optical PC material has low light transmittance, and the softening temperature of PMMA material can not meet the requirement, so that the produced aspherical double convex mirror has low light transmittance, low product qualification rate and low production efficiency.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a large-size aspheric double convex lens injection molding die, the volume shrinkage of an injection double convex lens is reasonably compensated through the design of a high-temperature group and a low-temperature group of a waterway in the die, the outline of an aspheric optical surface is ensured, the product percent of pass is high, the production efficiency is high, and the injection large-size aspheric PMMI double convex lens is produced in quantity, and is lighter and lower in cost than the prior glass convex lens.
In order to achieve the above object, the present utility model is realized by a large-sized aspherical double convex mirror injection molding die, which is characterized by comprising:
An upper cover, an upper die, a lower die and a base; the lower die can be arranged on the base in a vertically movable manner, an upper half hole is formed in the bottom of the upper die, a lower half hole is formed in the top of the lower die, the upper die is arranged on the lower die, the upper half hole and the lower half hole are matched to form an inner cavity of the lens die, and the upper cover is arranged on the upper die;
A feed runner group; the feeding runner group is communicated with the inner cavity of the lens mold after passing through the upper cover and the upper mold in sequence;
the first cooling flow channel and the seventh cooling flow channel; the first cooling runner and the seventh cooling runner are positioned in the upper die, the inlets and the outlets of the first cooling runner and the seventh cooling runner are respectively communicated with the outside, the water channels of the first cooling runner and the seventh cooling runner respectively pass through the upper inclined side of the outer side of the inner cavity of the lens die along the y axis direction, and the two water channels are sequentially arranged along the x axis;
the second cooling flow channel and the third cooling flow channel; the second cooling runner and the third cooling runner are positioned in the upper die, the inlets and outlets of the second cooling runner and the third cooling runner are respectively communicated with the outside, the water channels of the second cooling runner and the third cooling runner respectively pass through the upper part of the inner cavity of the lens die along the direction of the 'x' axis, and the two runners are sequentially arranged along the 'y' axis
A fourth cooling flow passage; the inlet and the outlet of the fourth cooling runner are communicated with the outside, the fourth cooling runner is positioned in the lower die, and the water channel of the fourth cooling runner horizontally surrounds the lower part of the inner cavity of the lens die; and
A fifth cooling flow passage and a sixth cooling flow passage; the inlets and outlets of the fifth cooling runner and the sixth cooling runner are communicated with the outside, the fifth cooling runner and the sixth cooling runner are positioned in the lower die, the water channels of the fifth cooling runner and the sixth cooling runner respectively pass through the lower part of the inner cavity of the lens die along the y axis direction, and the two runners are sequentially arranged along the x axis.
In this technical scheme, still include reference column and spring, the reference column is installed on the base, the bed die suit is on the reference column and can be along reference column longitudinal movement, the spring suit is on the reference column, and the both ends of spring are supported respectively and are leaned on base and bed die.
In this technical scheme, the feeding runner group includes the feed inlet be equipped with first feeding runner in the last mould be equipped with the second feeding runner in the bed die, the feed inlet is installed on the upper cover, feed inlet, first feeding runner, second feeding runner and lens mould inner chamber communicate in proper order.
In the technical scheme, more than one slag ladle cooling well is arranged on the rear die of the inner cavity of the lens die.
Compared with the prior art, the utility model has the advantages that: through the high temperature group and the low temperature group design of water route in the mould, reasonable compensation injection bi-convex lens volume shrink has guaranteed aspheric optical surface profile, and the product qualification rate is high, and production efficiency is high, and the volume production of injecting large-size aspheric PMMI bi-convex lens is lighter than current glass convex lens, and is with low costs.
Drawings
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a top view of the present utility model;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a B-B cross-sectional view of FIG. 2;
FIG. 5 is a cross-sectional view of C-C of FIG. 2;
FIG. 6 is a D-D sectional view of FIG. 2;
FIG. 7 is a side view of the present utility model;
FIG. 8 is a sectional E-E view of FIG. 7;
FIG. 9 is a cross-sectional perspective view of F-O-F of FIG. 7;
FIG. 10 is a schematic view of the present utility model in cross-section along a fifth cooling flow path;
FIG. 11 is a schematic view of the structure of the present utility model taken along the sixth cooling flow path;
FIG. 12 is a schematic diagram of the waterway of the present utility model;
Fig. 13 is a schematic view of the structure of the lower mold and the base of the present utility model.
Description of the embodiments
The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1 to 13, which are large-sized aspherical double convex mirror injection molding molds, comprising:
an upper cover 1, an upper die 3, a lower die 4 and a base 5; the lower die 4 is arranged on the base 5 in a vertically movable manner, an upper half hole is formed in the bottom of the upper die 3, a lower half hole is formed in the top of the lower die 4, the upper die 3 is arranged on the lower die 4, the upper half hole and the lower half hole are matched to form a lens die inner cavity 34, and the upper cover 1 is arranged on the upper die 3;
A feed runner group; the feeding runner group is communicated with the inner cavity 34 of the lens mold after passing through the upper cover 1 and the upper mold 3 in sequence;
A first cooling flow passage 7 and a seventh cooling flow passage 14; the first cooling runner 7 and the seventh cooling runner 14 are positioned in the upper die 3, the inlets and outlets of the first cooling runner 7 and the seventh cooling runner (4 are respectively communicated with the outside, water channels of the first cooling runner 7 and the seventh cooling runner 14 respectively pass through the upper part of the outer side of the inner cavity 34 of the lens die along the y axis direction, and the two water channels are sequentially arranged along the x axis;
the second cooling flow channel 8 and the third cooling flow channel 9; the second cooling runner 8 and the third cooling runner 9 are positioned in the upper mold 3, the inlets and outlets of the second cooling runner 8 and the third cooling runner 9 are respectively communicated with the outside, the water channels of the second cooling runner 8 and the third cooling runner 9 respectively pass through the upper part of the inner cavity 34 of the lens mold along the direction of the 'x' axis, and the two runners are sequentially arranged along the 'y' axis
A fourth cooling flow passage 10; the inlet and the outlet of the fourth cooling runner 10 are communicated with the outside, the fourth cooling runner is positioned in the lower die 4, and the water channel of the fourth cooling runner 10 horizontally surrounds the lower part of the inner cavity 34 of the lens die; and
A fifth cooling flow passage 11 and a sixth cooling flow passage 13; the inlets and outlets of the fifth cooling runner 11 and the sixth cooling runner 13 are communicated with the outside, the fifth cooling runner 11 and the sixth cooling runner 13 are positioned in the lower die 4, the water channels of the fifth cooling runner 11 and the sixth cooling runner 13 respectively pass through the lower part of the inner cavity 34 of the lens die along the y axis direction, and the two runners are sequentially arranged along the x axis.
In the course of the operation of the device,
Step one
Hot water at 140 ℃ is introduced into the second cooling flow passage, the third cooling flow passage, the fifth cooling flow passage and the sixth cooling flow passage, and the hot water at 120 ℃ is introduced into the first cooling flow passage, the seventh cooling flow passage and the fourth cooling flow passage;
Step two
Injecting materials through the feeding runner group, wherein the first section is injected at a speed of 2mm/s for 4.5 seconds, and the injection quantity accounts for 10% of the weight of the workpiece; the second section is filled at a speed of 1.8mm/s for 6.7 seconds, wherein the filling amount accounts for 13% of the weight of the workpiece; the third section is filled at a speed of 20mm/s for 1.1 seconds, and the filling amount accounts for 19% of the weight of the workpiece; the fourth section is filled at a speed of 15mm/s for 0.3 seconds, and the filling amount accounts for 4% of the weight of the workpiece; the fifth section is filled at a speed of 12mm/s for 1.2 seconds, and the filling amount accounts for 16% of the weight of the workpiece; the sixth section is used for injecting materials at the speed of 10mm/s for 1.2 seconds, wherein the injection quantity accounts for 13% of the weight of the workpiece; the seventh section is filled at a speed of 8mm/s, and the continuous filling amount is 11% of the weight of the workpiece after 1.3 seconds; the eighth section is filled at a speed of 6mm/s for 1.7 seconds, wherein the filling amount accounts for 11% of the weight of the workpiece; and finally, after cooling according to the injection material, supplementing a compensation material from the feeding flow channel, wherein the compensation material accounts for 2% of the weight of the workpiece.
Under the cooperation of two waterway groups with different temperatures, the temperature generated by the waterway groups reasonably compensates the volume shrinkage of the injection biconvex lens, ensures the outline of the aspheric surface optical surface, ensures the mass production of the aspheric surface PMMI biconvex lens, has excellent PMMI performance, has excellent mechanical property, heat-resistant stability, irradiation resistance and the like, and can be applied to various fields, such as aviation fields and the like.
In this embodiment, the mold further comprises a positioning column 6 and a spring 12, the positioning column 6 is mounted on the base 5, the lower mold 4 is sleeved on the positioning column 6 and can longitudinally move along the positioning column 6, the spring 12 is sleeved on the positioning column 6, and two ends of the spring 12 respectively lean against the base 5 and the lower mold 4.
In this embodiment, the feeding runner group includes a feeding port 2, a first feeding runner 31 is provided in the upper mold 3, a second feeding runner 41 is provided in the lower mold 4, the feeding port 2 is mounted on the upper cover 1, and the feeding port 2, the first feeding runner 31, the second feeding runner 41 and the lens mold cavity 34 are sequentially communicated.
In this embodiment, one or more slag ladle holes 341 are provided on the side of the lens mold cavity 34.
The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (4)
1. The utility model provides a jumbo size aspheric surface biconvex mirror injection moulding mould which characterized in that includes:
An upper cover (1), an upper die (3), a lower die (4) and a base (5); the lower die (4) can be installed on the base (5) in a vertically movable mode, an upper half hole is formed in the bottom of the upper die (3), a lower half hole is formed in the top of the lower die (4), the upper die (3) is installed on the lower die (4), the upper half hole and the lower half hole are matched to form a lens die inner cavity (34), and the upper cover (1) is installed on the upper die (3);
A feed runner group; the feeding runner group is communicated with the inner cavity (34) of the lens mold after passing through the upper cover (1) and the upper mold (3) in sequence;
a first cooling flow passage (7) and a seventh cooling flow passage (14); the first cooling runner (7) and the seventh cooling runner (14) are positioned in the upper die (3), the inlets and outlets of the first cooling runner (7) and the seventh cooling runner (14) are respectively communicated with the outside, water channels of the first cooling runner (7) and the seventh cooling runner (14) respectively pass through the outer side obliquely above the inner cavity (34) of the lens die along the y axis direction, and the two water channels are sequentially arranged along the x axis;
The second cooling flow channel (8) and the third cooling flow channel (9); the second cooling runner (8) and the third cooling runner (9) are positioned in the upper die (3), the inlets and outlets of the second cooling runner (8) and the third cooling runner (9) are respectively communicated with the outside, the water channels of the second cooling runner (8) and the third cooling runner (9) respectively pass through the upper part of the inner cavity (34) of the lens die along the direction of the 'x' axis, and the two runners are sequentially arranged along the 'y' axis
A fourth cooling flow path (10); the inlet and the outlet of the fourth cooling flow passage (10) are communicated with the outside, the fourth cooling flow passage is positioned in the lower die (4), and a water channel of the fourth cooling flow passage (10) horizontally surrounds the lower part of the inner cavity (34) of the lens die; and
A fifth cooling flow passage (11) and a sixth cooling flow passage (13); the inlets and outlets of the fifth cooling flow channel (11) and the sixth cooling flow channel (13) are communicated with the outside, the fifth cooling flow channel (11) and the sixth cooling flow channel (13) are positioned in the lower die (4), the water channels of the fifth cooling flow channel (11) and the sixth cooling flow channel (13) respectively pass through the lower part of the inner cavity (34) of the lens die along the y axis direction, and the two flow channels are sequentially arranged along the x axis.
2. The large-size aspherical double convex mirror injection molding die according to claim 1 is characterized by further comprising a positioning column (6) and a spring (12), wherein the positioning column (6) is installed on the base (5), the lower die (4) is sleeved on the positioning column (6) and can longitudinally move along the positioning column (6), the spring (12) is sleeved on the positioning column (6), and two ends of the spring (12) respectively lean against the base (5) and the lower die (4).
3. The large-size aspherical double convex mirror injection molding die according to claim 1, characterized in that the feeding runner group comprises a feeding port (2), a first feeding runner (31) is arranged in the upper die (3), a second feeding runner (41) is arranged in the lower die (4), the feeding port (2) is arranged on the upper cover (1), and the feeding port (2), the first feeding runner (31), the second feeding runner (41) and the inner cavity (34) of the lens die are sequentially communicated.
4. The large-size aspherical double convex mirror injection molding die according to claim 1, characterized in that more than one slag ladle hole (341) is arranged at the side part of the inner cavity (34) of the lens die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323651747.7U CN221584440U (en) | 2023-12-30 | 2023-12-30 | Injection molding die for large-size aspheric double convex lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323651747.7U CN221584440U (en) | 2023-12-30 | 2023-12-30 | Injection molding die for large-size aspheric double convex lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221584440U true CN221584440U (en) | 2024-08-23 |
Family
ID=92401163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323651747.7U Active CN221584440U (en) | 2023-12-30 | 2023-12-30 | Injection molding die for large-size aspheric double convex lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221584440U (en) |
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2023
- 2023-12-30 CN CN202323651747.7U patent/CN221584440U/en active Active
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