CN207290753U - A kind of injection mold for glasses parts - Google Patents
A kind of injection mold for glasses parts Download PDFInfo
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- CN207290753U CN207290753U CN201721211144.7U CN201721211144U CN207290753U CN 207290753 U CN207290753 U CN 207290753U CN 201721211144 U CN201721211144 U CN 201721211144U CN 207290753 U CN207290753 U CN 207290753U
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- cover half
- dynamic model
- silica gel
- half part
- glasses parts
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Abstract
The utility model belongs to optometric technology field, a kind of more particularly to injection mold for glasses parts, including metal die and silica gel mould, metal die includes the first cover half part and the first dynamic model part, silica gel mould includes the second cover half part and the second dynamic model part, after covering, formed with the cavity formed by several injection molding cavities between second cover half part and the second dynamic model part, first cover half part is fixedly connected with the first dynamic model part by guide post, and the length of injection molding cavity is 45% the 55% of the length of glasses parts.The epoxy resin of layer of transparent can be wrapped up in the metal part of glasses parts using the mould so that glasses parts have three-dimensional sense and stylishness concurrently while possessing metal-like.Shooting Technique during using the mould is positioned using half segmentation, simple and convenient, and precision is high, easy to operate, and stay in grade yields is high, greatly improves production efficiency.
Description
Technical field
The utility model belongs to optometric technology field, more particularly to a kind of injection mold for glasses parts.
Background technology
Traditional Shooting Technique, injection temperature is higher, generally more than 100 DEG C, therefore can only be by simple plating metal
It is molded into plastic cement type body.When making leg of spectacles, its concrete technology is：First metal is placed in die cavity, then plastic cement heat is melted
Later high pressure injection die cavity so that plastic cement is coated on metallic circumferential, forms leg of spectacles.But formed during high pressure injection plastic cement
Stress is inconsistent plus plastic cement and metal fever shrinkage rates, and after the completion of injection, metal can depart from plastic cement, be internally formed
The marking of similar watercolor line, causing it to be molded, precision is low, and defective products rate is high.
In view of this, it is necessory to provide a kind of injection mold for glasses parts, it includes metal die and silica gel
Mould, the metal part of glasses parts are placed on the cover half of silica gel mould, and epoxy resin is entered by the cast gate on metal die
Into silica gel mould and the surface of metal part is wrapped in, so that one layer of epoxy resin layer is wrapped up on the surface of metal part, by
In the use of silica gel mould, one carrys out the shrinkage rates than epoxy resin and metal due to the thermal contraction ratio of silica gel and epoxy resin
It is more likely to unanimously, so as to obtain the product of more saturation, the epoxy resin of normal temperature and pressure can be poured into silica gel by two
In mould, the advantage of normal temperature and pressure injection is that without internal stress, metal is firmly combined with epoxy resin, will not injure gold
Various painting effects on category.Moreover, half of the length of the cavity of silica gel mould for the length of glasses parts, so that in metal
During assembling positioning, double fragmentation Shooting Technique can be used, installation accuracy is further increased, accelerates installation speed, reduced
Requirement to worker's technology is, it can be achieved that mass made with high precision.
Utility model content
The purpose of this utility model is that：In view of the deficiencies of the prior art, a kind of injection for glasses parts is provided
Mould, it includes metal die and silica gel mould, and the metal part of glasses parts is placed on the cover half of silica gel mould, epoxy resin
Entered by the cast gate on metal die in silica gel mould and be wrapped in the surface of metal part, so that in the table of metal part
Bread wraps up in one layer of epoxy resin layer, and due to the use of silica gel mould, one carrys out the thermal contraction ratio ratio due to silica gel and epoxy resin
The shrinkage rates of epoxy resin and metal are more likely to unanimously, and so as to obtain the product of more saturation, two can be by often
The epoxy resin of normal temperature and pressure is poured into silica gel mould, and the advantage of normal temperature and pressure injection is, without internal stress, metal and epoxy
Resin-bonded is firm, will not injure the various painting effects on metal.Moreover, the length of the cavity of silica gel mould is glasses parts
Length half so that when assembled metal positions, double fragmentation Shooting Technique can be used, further increase installation essence
Degree, accelerates installation speed, reduces the requirement to worker's technology, it can be achieved that mass made with high precision.
In order to achieve the above object, the utility model adopts the following technical solution：
A kind of injection mold for glasses parts, including metal die and silica gel mould, the metal die include the
One cover half part and the first dynamic model part, the silica gel mould include the second cover half part and the second dynamic model part, and described second
Cover half part is fixedly connected with the first cover half part, and second dynamic model part is fixed with first dynamic model part to be connected
Connect, after covering, formed with the type formed by several injection molding cavities between the second cover half part and second dynamic model part
Chamber, the first cover half part are fixedly connected with first dynamic model part by guide post, and the length of the injection molding cavity is described
The 45%-55% of the length of glasses parts.
It is used to a kind of of the injection mold of glasses parts as the utility model improve, the guide post is arranged to two, and
And two guide posts are separately positioned on the diagonal position of the first cover half part.This connection mode is simple, while again can
It is connected firmly, cost is low.
It is used to a kind of of the injection mold of glasses parts as the utility model improve, is set on the second cover half part
There is sprue, second dynamic model part is provided with runner.
It is used to a kind of of the injection mold of glasses parts as the utility model improve, the first cover half part is provided with
Ejecting mechanism.
It is used to a kind of of the injection mold of glasses parts as the utility model improve, the both sides of first dynamic model part
It is additionally provided with handle 8.
It is used to a kind of of the injection mold of glasses parts as the utility model improve, the area of the second cover half part
For the 40%-80% of the area of the first cover half part, the area of second dynamic model part is first dynamic model part
Area 40%-80%.
It is used to a kind of of the injection mold of glasses parts as the utility model improve, one end of the injection molding cavity is provided with
Concave part, the other end of the injection molding cavity is flushed with one end of the second cover half part, and the other end of the injection molding cavity
Formed with limit chamber.
Be used to a kind of of the injection mold of glasses parts as the utility model improve, the glasses parts for leg of spectacles or
Spectacle-frame.
Relative to the prior art, a kind of injection mold for glasses parts provided by the utility model, it includes metal
Mould and silica gel mould, the metal part of glasses parts are placed on the cover half of silica gel mould, and epoxy resin passes through on metal die
Cast gate enter in silica gel mould and be wrapped in the surface of metal part so that metal part surface wrap up one layer of epoxy
Resin bed, due to the use of silica gel mould, one comes since the thermal contraction ratio of silica gel and epoxy resin is than epoxy resin and metal
Shrinkage rates be more likely to unanimously, so as to obtain the product of more saturation, two can be by the asphalt mixtures modified by epoxy resin of normal temperature and pressure
Fat is poured into silica gel mould, and the advantage of normal temperature and pressure injection is that, without internal stress, metal is firmly combined with epoxy resin,
The various painting effects on metal will not be injured.Moreover, half of the length of the cavity of silica gel mould for the length of glasses parts,
So as to when assembled metal positions, double fragmentation Shooting Technique be used, installation accuracy is further increased, accelerate installation
Speed, reduces the requirement to worker's technology, it can be achieved that mass made with high precision.
The epoxy of layer of transparent can be wrapped up in the metal part of glasses parts (leg of spectacles or spectacle-frame) using the mould
Resin so that glasses parts have three-dimensional sense and stylishness concurrently while possessing metal-like.Injection work during using the mould
Skill is positioned using half segmentation, simple and convenient, and precision is high, easy to operate.In other words, relative to whole metallic cover epoxy resin
Technique, half segmentation coat easy to operate, accurate positioning, and stay in grade yields is high, greatly improves production efficiency.
Brief description of the drawings
With reference to the accompanying drawings and detailed description, the utility model and its advantageous effects are described in detail.
Fig. 1 is the positive structure diagram of mould in the utility model.
Fig. 2 is the backsight structural representation of mould in the utility model.
Fig. 3 is the structure diagram (state during second step) of the first cover half part of silica gel mould in the utility model.
Fig. 4 is the structure diagram (state during three steps) of the first cover half part of silica gel mould in the utility model.
Fig. 5 is the side view of silica gel mould in the utility model.
Fig. 6 is the structure diagram after mould opening in the utility model.
Fig. 7 is the structure diagram for the leg of spectacles being prepared using the method for the utility model embodiment 1.
Embodiment
The structure diagram of mould as used in Fig. 1 to Fig. 6 shows the utility model.
The mould includes metal die 1 and silica gel mould 2, and metal die 1 includes the first cover half part 11 and the first dynamic model
Part 12, silica gel mould 2 include the second cover half part 21 and the second dynamic model part 22, the second cover half part 21 and the first cover half portion
Points 11 are fixedly connected, and the second dynamic model part 22 is fixedly connected with the first dynamic model part 12, after covering, the second cover half part 21 and the
(noted between two dynamic model parts 22 formed with the cavity formed by several injection molding cavities 9 while can realizing multiple glasses parts
Modeling), the first cover half part 11 is fixedly connected with the first dynamic model part 12 by two guide posts 3, and two guide posts 3 are separately positioned on the
The diagonal position of one cover half part 11.The length of injection molding cavity 9 is the 45%-55% of the length of glasses parts.
Sprue 23 is provided with second cover half part 21, the second dynamic model part 22 is provided with runner 24.First cover half
Part 11 is provided with ejecting mechanism.The both sides of first dynamic model part 12 are additionally provided with handle 8, facilitate beating for the first dynamic model part 12
Open and cover.
The area of second cover half part 21 for the first cover half part 11 area 40%-80%, the second dynamic model part 22
Area for the first dynamic model part 12 area 40%-80%.One end of injection molding cavity 9 is provided with concave part 10, injection molding cavity 9
The other end is flushed with one end of the second cover half part 21, and the other end of injection molding cavity 9 is formed with limit chamber 20.
Glasses parts are leg of spectacles or spectacle-frame.
Embodiment 1
The Shooting Technique of glasses parts is formed using the mold injection, including at least following steps：
The first step, suppresses silica gel with metal die 1 according to layout design and forms silica gel mould 2, before compacting, in advance in metal
According to the pattern maker's shrinkage of 2% amplification silica gel (this is because silica gel product has the characteristics that sulfidization molding shrink, therefore thing on mould 1
First amplify the pattern maker's shrinkage of silica gel on metal die 1), the dynamic model part 22 of silica gel mould 2 and the dynamic model part 12 of metal die 1
It is fixedly connected, the cover half part 21 of silica gel mould 2 is connected with the cover half part 11 of metal die 1, the dynamic model part of silica gel mould 2
22 form cavity with the cover half part 21 of silica gel mould 2；
The front half section of the metal part 4 of glasses parts, is inserted the cavity of the cover half part 21 of silica gel mould 2 by second step
It is interior, the dynamic model part 12 of metal die 1 is covered, from 5 infusion epoxy resin of cast gate, epoxy resin is flowed into cavity simultaneously by runner
It is wrapped in the front half section of metal part 4；
3rd step, opens the dynamic model part 12 of metal die 1, the product that second step obtains is taken out, after metal part 4
In the cavity of half section of cover half part 21 for inserting silica gel mould 2 again, cover the dynamic model part 12 of metal die 1, from cast gate 5 with
Normal pressure irrigates 25 DEG C of epoxy resin, and epoxy resin is flowed into cavity by runner and is wrapped on the second half section of metal part 4,
Whole glasses parts can be poured out using epoxy resin come so as to wrap up one in metal part 4 the characteristics of secondary fusion
Layer epoxy resin layer 6.
Wherein, by weight, the silica gel of the first step includes following components：
100 parts by weight of silica gel materials；
50 parts by weight of silicon powder；
Short glass fiber 15 weight point；
The preparation method of silica gel is：Silica gel materials, silicon powder and short glass fiber are added in double screw extruder together,
At 130 DEG C, extruding pelletization, cool down up to silica gel the temperature control of double screw extruder.
In view of silica gel product is heated the characteristics of producing expansion, in order to suppress silica gel product expansion effects precision, in silica gel
Silicon powder and short glass fiber are added when raw material is kneaded, the silica gel mould coefficient of thermal expansion of both materials is added through actual measurement to be reduced
More than 60%, it ensure that the stability and accuracy of silica gel mould.
The mass content of sodium oxide molybdena is less than 2% in short glass fiber.The average grain diameter of silicon powder is 0.2 μm, specific surface area
For 24m2/g。
In the present embodiment, glasses parts are leg of spectacles.The structure of the leg of spectacles is as shown in fig. 7, it includes 4 He of metal part
It is coated on the epoxy resin layer 6 on the surface of metal part 4.Wherein, one end end of metal part 4, which is additionally provided with, is used for and glasses
The connecting portion 7 that frame axis connects.
The thickness of epoxy resin layer is 10 μm of -1mm.
Embodiment 2
As different from Example 1, in the first step, in advance according to the pattern maker's shrinkage of 1.5% amplification silica gel on metal die；
In 3rd step, 22 DEG C of epoxy resin is irrigated from cast gate with normal pressure.
By weight, the silica gel of the first step includes following components：
100 parts by weight of silica gel materials；
45 parts by weight of silicon powder；
Short glass fiber 18 weight point；
The preparation method of the silica gel is：Silica gel materials, silicon powder and short glass fiber are added into twin-screw extrusion together
In machine, at 125 DEG C, extruding pelletization, cool down up to silica gel the temperature control of double screw extruder.
The average grain diameter of silicon powder is 1 μm, specific surface area 26m2/g。
Glasses parts are spectacle-frame, since the shape of spectacle-frame is different from leg of spectacles, the shape of cavity also with implementation
Example 1 is different.
Remaining is with embodiment 1, and which is not described herein again.
Embodiment 3
As different from Example 1, in the first step, in advance according to the pattern maker's shrinkage of 2.5% amplification silica gel on metal die；
In 3rd step, 28 DEG C of epoxy resin is irrigated from cast gate with normal pressure.
By weight, the silica gel of the first step includes following components：
100 parts by weight of silica gel materials；
55 parts by weight of silicon powder；
Short glass fiber 13 weight point；
The preparation method of the silica gel is：Silica gel materials, silicon powder and short glass fiber are added into twin-screw extrusion together
In machine, at 135 DEG C, extruding pelletization, cool down up to silica gel the temperature control of double screw extruder.
The average grain diameter of silicon powder is 2 μm, specific surface area 24m2/g。
Remaining is with embodiment 1, and which is not described herein again.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
Apply mode make a change and modification.Therefore, the utility model is not limited to embodiment disclosed and described above, right
Some modifications and changes of the utility model should also be as falling into the scope of the claims of the utility model.In addition, to the greatest extent
Some specific terms have been used in pipe this specification, but these terms are merely for convenience of description, not to the utility model
Form any restrictions.
Claims (8)
- A kind of 1. injection mold for glasses parts, it is characterised in that：Including metal die and silica gel mould, the metal pattern Tool includes the first cover half part and the first dynamic model part, and the silica gel mould includes the second cover half part and the second dynamic model part, The second cover half part is fixedly connected with the first cover half part, second dynamic model part and first dynamic model part It is fixedly connected, after covering, formed with by several injection molding cavity shapes between the second cover half part and second dynamic model part Into cavity, the first cover half part is fixedly connected with first dynamic model part by guide post, the length of the injection molding cavity For the 45%-55% of the length of the glasses parts.
- 2. the injection mold according to claim 1 for glasses parts, it is characterised in that：The guide post is arranged to two It is a, and two guide posts are separately positioned on the diagonal position of the first cover half part.
- 3. the injection mold according to claim 1 for glasses parts, it is characterised in that：On the second cover half part Sprue is provided with, second dynamic model part is provided with runner.
- 4. the injection mold according to claim 1 for glasses parts, it is characterised in that：The first cover half part is set It is equipped with ejecting mechanism.
- 5. the injection mold according to claim 1 for glasses parts, it is characterised in that：First dynamic model part Both sides are additionally provided with handle 8.
- 6. the injection mold according to claim 1 for glasses parts, it is characterised in that：The second cover half part Area is the 40%-80% of the area of the first cover half part, and the area of second dynamic model part is first dynamic model The 40%-80% of partial area.
- 7. the injection mold according to claim 1 for glasses parts, it is characterised in that：One end of the injection molding cavity is set Concave part is equipped with, the other end of the injection molding cavity is flushed with one end of the second cover half part, and the injection molding cavity is another One end is formed with limit chamber.
- 8. the injection mold according to claim 1 for glasses parts, it is characterised in that：The glasses parts are glasses Leg or spectacle-frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721211144.7U CN207290753U (en) | 2017-09-20 | 2017-09-20 | A kind of injection mold for glasses parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721211144.7U CN207290753U (en) | 2017-09-20 | 2017-09-20 | A kind of injection mold for glasses parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207290753U true CN207290753U (en) | 2018-05-01 |
Family
ID=62442199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721211144.7U Active CN207290753U (en) | 2017-09-20 | 2017-09-20 | A kind of injection mold for glasses parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207290753U (en) |
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2017
- 2017-09-20 CN CN201721211144.7U patent/CN207290753U/en active Active
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