CN101168297A - Internal stress fast eliminating technique for PC lens and device thereof - Google Patents
Internal stress fast eliminating technique for PC lens and device thereof Download PDFInfo
- Publication number
- CN101168297A CN101168297A CNA2007101904126A CN200710190412A CN101168297A CN 101168297 A CN101168297 A CN 101168297A CN A2007101904126 A CNA2007101904126 A CN A2007101904126A CN 200710190412 A CN200710190412 A CN 200710190412A CN 101168297 A CN101168297 A CN 101168297A
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- eyeglass
- internal stress
- lens
- heating
- die cavity
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Abstract
The invention discloses a technique and apparatus which are capable of rapidly eliminating inner stress of PC lens. The invention is characterized in that blanks of the PC lens preparing for eliminating inner stress are placed in a molding chamber the shape of which is matched with the blanks of the PC lens, then the molding chamber is heated to reach the temperature of 160-220 DEG C, the heat is preserved for 2-10 minutes under the condition of pressure maintaining, then after cooling and decreasing the temperature to less than 100 DEG C, the completed product can be taken out. The invention has the advantages that the blanks of the PC lens are placed in the molding chamber of which the temperature is 160-220 DEG C, to keep thermal for 2-10 minutes, the PC molecules combine again, thereby eliminating inner stress of PC lens rapidly and improving the efficiency greatly, simultaneously saving energy consumption, and reducing cost.
Description
Technical field
The internal stress that the present invention relates to a kind of PC (Merlon) eyeglass is eliminated technology and equipment thereof, specifically is meant a kind of PC eyeglass internal stress fast eliminating technique and equipment thereof.
Background technology
PC (Merlon) is colourless or little yellow thermoplastic engineering plastic of a kind of unformed, odorless, nontoxic, highly transparent; its vitrification point is about 150 ℃; melt temperature is 215-225 ℃; has excellent physical and mechanical properties; especially resistance to impact excellence, density little, have good hear resistance and a lower temperature resistance; therefore the PC material has become the ideal material of making various eyeglasses, especially is fit to make the hardening lens that children, sportsman, fireman and police's eyes are protected.But PC material crystallization condition is relatively stricter, when its injection mo(u)lding is eyeglass, PC often is the indefiniteness structure, and molecular rigidity is big, orientation and disorientation all compare difficulty, eyeglass internal stress after the moulding is bigger, in addition in the process of PC eyeglass moulding, when mold temperature during the end of than, fused materials enters the very fast cooled and solidified in die cavity rear surface, and the material of heat is under the effect of pressure, enter die cavity endlessly, formed bigger shear stress between cold burden and heat material, these stress have been retained in the product with the cooling major part of melt, and the too fast molecularly oriented that then causes of PC melt injection moulding in injection moulding process is inconsistent, the same internal stress that produces, and if speed is low just is difficult to overcome the melt flows resistance, making in the die cavity gradually, the melt of cooling lacks feed supplement timely and produces contraction, cause product defect, still can cause internal stress.
But there is internal stress in the optical mirror slip, can has a strong impact on the optics and the mechanical performance of eyeglass, make eyeglass produce situations such as birefringence, eyeglass cracking such as meeting.Therefore the PC eyeglass need be done internal stress and eliminate after moulding, just can produce and sell and use.At present, it is the PC lens blank after the moulding to be placed in the baking oven heated 2-5 hour that conventional P C eyeglass internal stress is eliminated technology, temperature of oven keeps about 120 ℃, but this elimination technology not only expends time in oversize, it is high to keep simultaneously oven temperature certainly will cause energy to consume for a long time, and the energy-saving and cost-reducing requirement of advocating with current government is not inconsistent.
Summary of the invention
First purpose of purpose of the present invention is in order to overcome the shortcomings and deficiencies of prior art, and a kind of PC eyeglass internal stress fast eliminating technique is provided.
Second purpose of the present invention provides the required equipment of a kind of PC eyeglass internal stress fast eliminating technique.
For realizing above-mentioned first purpose, technical scheme of the present invention is that the blank of waiting to eliminate the PC eyeglass of internal stress is put in the die cavity of shape and PC lens blank coupling, then die cavity is heated to 160 ℃-220 ℃, and insulation is 2-10 minute under the pressurize condition, and then cools and take out finished product below 100 ℃.
Further be provided with is that die cavity is heated to 160 ℃-220 ℃ is by heating wire heating or high temperature oil heating or high-frequency eddy-current heating.
Further be provided with is that described cooling is by cold water injection or cold wind cooling.
For realizing above-mentioned second purpose, technical scheme of the present invention is patrix and the counterdie that comprises mutual coupling, the blank shape of the die cavity of the two formation and PC eyeglass is complementary, be provided with the extraneous containing cavity that is communicated with in described patrix and the counterdie, be provided with heating module and cooling module in this containing cavity.
Further being provided with is that described heating module is a heating wire, and described cooling module is the cryogenic media pipeline that is in communication with the outside.
The invention has the advantages that: with insulation 2-10 minute in temperature is 160 ℃-220 ℃ die cavity of PC lens blank, the PC molecule reconfigures, and has eliminated internal stress fast, greatly must improve efficient, has saved energy consumption simultaneously, reduces cost.
Figure of description
The structural representation of Fig. 1 device therefor of the present invention
The specific embodiment
A kind of quick elimination technology of PC eyeglass internal stress is that the blank of waiting to eliminate the PC eyeglass of internal stress is put in the die cavity of shape and PC lens blank coupling, then die cavity is heated to 160 ℃-220 ℃, die cavity is heated to 160 ℃-220 ℃ can be adopted by modes such as heating wire heating or high temperature oil heating or high-frequency eddy-current heating and heat, and insulation is 2-10 minute under the pressurize condition, this pressurize condition is the briquetting pressure of PC lens blank, and then cool and take out finished product below 100 ℃, this process of cooling is by cold water injection or cold wind cooling.
The equipment that the quick elimination technology of PC eyeglass internal stress is as shown in Figure 1 adopted, the patrix 1 and counterdie 2 that comprise mutual coupling, the die cavity 3 of the two formation is complementary with the blank shape of PC eyeglass, be provided with the extraneous containing cavity 4 that is communicated with in described patrix 1 and the counterdie 2, this containing cavity 4 can inject high-temperature medium or cryogenic media is adjusted the temperature of upper and lower mould, makes it remain on 160 ℃-220 ℃ or cooling cooling.Described high-temperature medium can adopt high temperature oil, described cryogenic media can adopt water at low temperature or Cryogenic air.Certainly the present invention can also adopt other mode of heatings to heat, and such as being used in heating wire heating or swirler heating etc. is installed in the containing cavity.
Claims (5)
1. the quick elimination technology of a PC eyeglass internal stress, it is characterized in that: the blank that will wait to eliminate the PC eyeglass of internal stress is put in the die cavity of shape and PC lens blank coupling, then die cavity is heated to 160 ℃-220 ℃, and insulation is 2-10 minute under the pressurize condition, and then cools and take out finished product below 100 ℃.
2. the quick elimination technology of PC eyeglass internal stress according to claim 1 is characterized in that: it is by heating wire heating or high temperature oil heating or high-frequency eddy-current heating that die cavity is heated to 160 ℃-220 ℃.
3. the quick elimination technology of PC eyeglass internal stress according to claim 1 and 2 is characterized in that: described cooling is by cold water injection or cold wind cooling.
4. equipment that is exclusively used in the quick elimination technology of the described PC eyeglass of claim 1 internal stress, it is characterized in that: the patrix and the counterdie that comprise mutual coupling, the blank shape of the die cavity of the two formation and PC eyeglass is complementary, containing cavity all is set in described patrix and the counterdie, is provided with heating module and cooling module in this containing cavity.
5. the equipment that is exclusively used in the quick elimination technology of the described PC eyeglass of claim 1 internal stress according to claim 4, it is characterized in that: described heating module is a heating wire, described cooling module is the cryogenic media pipeline that is in communication with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101904126A CN101168297A (en) | 2007-11-22 | 2007-11-22 | Internal stress fast eliminating technique for PC lens and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101904126A CN101168297A (en) | 2007-11-22 | 2007-11-22 | Internal stress fast eliminating technique for PC lens and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101168297A true CN101168297A (en) | 2008-04-30 |
Family
ID=39389123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101904126A Pending CN101168297A (en) | 2007-11-22 | 2007-11-22 | Internal stress fast eliminating technique for PC lens and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101168297A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774279A (en) * | 2009-01-08 | 2010-07-14 | 协羽机材工业股份有限公司 | Strengthening fixture of valve products |
| CN102532570A (en) * | 2010-12-08 | 2012-07-04 | 比亚迪股份有限公司 | Stress relieving method of polycarbonate material |
| CN102922754A (en) * | 2012-10-31 | 2013-02-13 | 东莞劲胜精密组件股份有限公司 | Technique for eliminating deformation of plastic parts |
| CN104260377A (en) * | 2014-08-13 | 2015-01-07 | 昆山易昌泰塑胶有限公司 | Processing technology capable of synchronously eliminating stress mark and buckling deformation of plastic parts |
| CN106003763A (en) * | 2016-05-17 | 2016-10-12 | 艾普偏光科技(厦门)有限公司 | Machining method and device for anti-deformation TAC lens |
-
2007
- 2007-11-22 CN CNA2007101904126A patent/CN101168297A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774279A (en) * | 2009-01-08 | 2010-07-14 | 协羽机材工业股份有限公司 | Strengthening fixture of valve products |
| CN102532570A (en) * | 2010-12-08 | 2012-07-04 | 比亚迪股份有限公司 | Stress relieving method of polycarbonate material |
| CN102532570B (en) * | 2010-12-08 | 2015-02-04 | 比亚迪股份有限公司 | Stress relieving method of polycarbonate material |
| CN102922754A (en) * | 2012-10-31 | 2013-02-13 | 东莞劲胜精密组件股份有限公司 | Technique for eliminating deformation of plastic parts |
| CN104260377A (en) * | 2014-08-13 | 2015-01-07 | 昆山易昌泰塑胶有限公司 | Processing technology capable of synchronously eliminating stress mark and buckling deformation of plastic parts |
| CN106003763A (en) * | 2016-05-17 | 2016-10-12 | 艾普偏光科技(厦门)有限公司 | Machining method and device for anti-deformation TAC lens |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080430 |