CN1824616A

CN1824616A - Mould for glass shaping

Info

Publication number: CN1824616A
Application number: CNA200510033334XA
Authority: CN
Inventors: 江宗韦
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2005-02-25
Filing date: 2005-02-25
Publication date: 2006-08-30
Anticipated expiration: 2025-02-25
Also published as: CN100554196C

Abstract

The present invention provides a glass-forming mould for making moulded glass product. It includes an upper mould kernel, a lower mould kernel, a positioning ring positioned between said upper mould kernel and lower mould kernel and an external mould cover for mounting described upper mould kernel, lower mould vernal and positioning ring, in which the side wall of the described positioning ring is equipped with several through holes, and the side wall of the described mould cover also is equipped with several holes communicated with the through holes of side wall of the described positioning ring.

Description

Glass-forming die

[technical field]

The present invention relates to a kind of mould, relate in particular to a kind of glass-forming die.

[background technology]

The compression molding processing procedure of glassy product, particularly make the opticglass product, as aspheric surface glass lens, globe lens, prism etc., adopt direct compression molding (DirectPress-molding) but technology direct production opticglass product, need not subsequent process steps such as polishing, polishing, can enhance productivity greatly and output, and good product quality.But directly compression molding method requires very high for the chemical stability of mould, thermal shock resistance, physical strength, demolding performace etc.As United States Patent (USP) the 3rd, 844, disclose a kind of shaped device and method No. 755, adopting vitreous carbon is the mould of material.But since described vitreous carbon material structure intensity a little less than, phenomenons such as crackle appear in mould easily in the pressing mold process, cause die surface distortion or surface smoothness to descend and influence quality product even mould is scrapped.Therefore, in fact the development of compression molding technology depends primarily on the progress of moulding stock and mould structure.Mould for compression molding generally has following requirement:

A. when high temperature, has good rigidity, anti-mechanical impact strength and enough hardness;

B. do not crack and be out of shape in reaching rapid heating refrigerative thermal shocking bed die repeatedly;

C. chemical reaction does not take place in die surface and opticglass when high temperature, does not stick glass;

D., high temperature oxidation does not take place;

E. good processability easily is processed into the profile of high precision and high surface finish;

F. cost is low.

Traditional moulds adopts stainless steel or refractory alloy as moulding stock mostly, and high temperature oxidation takes place this mould easily, under thermal shocking effect repeatedly, grain growth can take place, thereby glass is cohered in the die surface roughen.

For addressing the above problem, nonmetal and superhard alloy is used to mould.According to reports, silicon carbide (SiC), silicon nitride (Si ₃N ₄), titanium carbide (TiC), wolfram varbide (WC) and tungsten-cobalt carbide alloy have been used to mfg. moulding die.Yet above-mentioned various carbide ceramics hardness are very high, are difficult to be processed into needed profile, particularly high precision aspheric surface shape.And superhard alloy uses for some time also high temperature oxidation may take place afterwards except that being difficult to processing.

Therefore, be mold base with carbide or superhard alloy, the glass-forming die that its surface is formed with other material coating or coating becomes new developing direction, typical glass-forming die such as United States Patent (USP) the 4th, 685, No. 948, the 4th, 882, No. 827 and the 5th, 202, No. 156.

United States Patent (USP) the 4th, 685, No. 948 a kind of glass-forming dies that are used for direct compression molding opticglass product of announcement.It adopts high-intensity superhard alloy (Super-hard Alloy), carbide ceramics or sintering metal (Cermet) as mold base, and be formed with iridium (Ir) thin film layer in the mold pressing surface of mould, or the alloy firm layer of Ir and platinum (Pt), rhenium (Re), osmium (Os), rhodium (Rh) or ruthenium (Ru), or Ru thin film layer, or the alloy firm layer of Ru and Pt, Re, Os, Rh.Can effectively prevent mold base generation high temperature oxidation by described thin film layer.

United States Patent (USP) the 4th, 882 discloses a kind of device for shaping glass No. 827, and it forms one deck hard carbon films solving the problem of high temperature oxidation by the sputter mode on mold base, and described hard carbon films is made up of microcrystal and unbodied quasi-diamond and class graphite particulate.This hard carbon films is hydrogen atoms not, and isomorphism type is very high, but the surface big more trend of smooth film stress is more but arranged.Cause thus in the mold process along with the release of stress, described hard carbon films phenomenon occurs peeling off in mold base polishing crackle or tiny areas such as remaining rumbling compound, crystal boundary place.

United States Patent (USP) the 5th, 202 discloses the method that a kind of preparation is used for the glass-forming die of opticglass product No. 156.It adopts high-intensity superhard alloy, carbide ceramics or sintering metal as mold base, and forms one deck diamond-film-like (DLC, Diamond Like Carbon) in the mold pressing surface of mould.Wei Zhongshan, Zuo Dunwen be in " aviation accurate manufacturing technology " Vol.40, No.1, and 20-23 (Feb.2004) has introduced the preparation method and the application of diamond-film-like in " preparation of diamond-film-like and application " literary composition.

Above-mentioned glass-forming die is after the rete duration of service that forms on the mold base is long, may occur being worn away or occur the cracking (Crack), peel off, tiny crack situations such as (Microcrack), thereby influence demolding performace, may occur phenomenons such as the glutinous mould of glassy product when causing the demoulding, can't take out smoothly with mechanical manipulator.

In view of this, provide a kind of glass-forming die of the demoulding that is easy in fact for necessary.

[summary of the invention]

Below, will a kind of demoulding that is easy to, the glass-forming die that product is easy to take out be described with some embodiment.

For realizing foregoing, a kind of glass-forming die is provided, it comprises:

One upper cores;

Die once;

One at described upper cores and the following set ring between the die; And

One is used to install the outside die sleeve of described upper cores, following die and set ring;

Wherein, described set ring sidewall is provided with a plurality of through holes, and described outside die sleeve sidewall is provided with a plurality of through holes and communicates with a plurality of through holes of described set ring sidewall.

Described set ring comprises that the first part and that a sidewall is provided with a plurality of through holes cooperates localized second section with following die.

Preferably, the inwall of described first part is an inversed taper platform shape.

Preferably, the axial along continuous straight runs setting of through hole of described first part sidewall.

Preferably, described first part is positioned on the residing level attitude of mold pressing surface of following die.

Preferably, described set ring outer wall is provided with an annular recesses and communicates with a plurality of through holes of described first part sidewall.

Preferably, a plurality of through holes of described first part sidewall are distributed on two radial cross-sections of described first part.

Preferably, a plurality of through holes of described first part sidewall are symmetrically distributed on described radial cross-section.

Preferably, in the through hole of described symmetrical distribution, be positioned near the aperture of the through hole on the radial cross-section of following die bigger.

Preferably, the mold pressing surface of die was an aspheric surface under described upper cores reached.

Compared with prior art, the glass-forming die of the technical program is provided with the air-flow through hole in set ring and outside die sleeve, have simple in structure, cost is low, advantage such as easy to use, the problem of the glutinous mould of the glassy product that occurs in the time of can effectively solving the mould die sinking.The technical program also can further be adjusted the position of moulding glassy product in mould by different through holes, solves the problem that glassy product can't take out.

[description of drawings]

Fig. 1 is the explosive view of the technical program glass-forming die.

Fig. 2 is the set ring enlarged diagram of the technical program glass-forming die.

Fig. 3 is the axial sectional view of the technical program glass-forming die.

Fig. 4 is the local enlarged diagram of Fig. 3.

Fig. 5 and Fig. 6 are the user mode synoptic diagram of the technical program glass-forming die.

[embodiment]

Below in conjunction with accompanying drawing the technical program is described in further detail.

See also Fig. 1 to Fig. 4, the technical program provides a kind of forming mould 100 that is used for mold pressing opticglass product, and it comprises:

One upper cores 10;

Once die 30;

One at described upper cores 10 and the set ring 20 between the die 30 down; And

One is used to install the outside die sleeve 50 of described upper cores 10, set ring 20 and following die 30;

Wherein, the sidewall of described set ring 20 is provided with a plurality of through holes 211,212, and described outside die sleeve 50 sidewalls are provided with plural through hole 51 and communicate with described through hole 211,212.Through hole 51,211 and 212 is four in the present embodiment.

Described set ring 20 comprises that the first part 210 and that a sidewall is provided with a plurality of through holes 211,212 cooperates localized second section 220 with following die 30.The inwall 213 of first part described in the present embodiment 210 is an inversed taper platform shape; Described second section 220 is the round shape that cooperates with following die 30.

Preferably, the axial along continuous straight runs setting of the through hole 211,212 of described first part 210 sidewalls.

Preferably, described first part 210 is positioned on the level attitude of the following mold pressing surface 301 of die 30.

Described inwall 213 communicates with the through hole 51 of outside die sleeve 50 sidewalls through described through hole 211,212.In the present embodiment, described set ring 20 outer walls are provided with an annular recesses 215, and through hole 211,212 communicates by the through hole 51 of described annular recesses 215 with outside die sleeve 50 sidewalls.Described through hole 211,212 and through hole 51 also can adopt in other embodiment and directly be communicated with or it is communicated with by his mode.

Preferably, described through hole 211,212 is symmetrically distributed in respectively on two radial cross-sections of described first part 210, and is positioned at the aperture of the aperture of the close through hole 212 of die 30 down greater than through hole 211.

See also Fig. 5 and Fig. 6 and since glass-forming die duration of service long after, the situation that glassy product attaches to die may appear during die sinking, cause mechanical manipulator can't take out glassy product.In the glass-forming die 100 die sinking processes that the technical program provides, if glassy product 60 attaches to molding surface 101, can blow in the through hole 51 of outside die sleeve 50, air-flow along the direction of arrow through annular recesses 215, and through hole 211,212 blow to glassy product 60, it is fallen.Because the inwall 213 of first part 210 adopts inversed taper platform shape, if glassy product 60 is not in ideal position when blowing off, still can blow and adjust, make glassy product 60 arrive middle position, make things convenient for mechanical manipulator (figure does not show) to take out by the through hole 211,212 in different apertures.

Be the needs that adapt to the different shape glass lens, the technical program also can further utilize Micrometer-Nanometer Processing Technology to be engraved as the optical lens curve form of design in advance in the mold pressing surface 101,301 of upper cores 10 and following die 30, as aspheric surface.

Certainly, the technical program not only can be used for the mould of mold pressing opticglass product, also can be applicable to the mould of the molded product of other different shapes, different purposes.

The glass-forming die that the technical program provides is provided with the air-flow through hole in set ring and outside die sleeve, the problem of the glutinous mould of the glassy product that occurs in the time of can effectively solving the mould die sinking; The technical program also can further be adjusted the position of moulding glassy product in mould by different through holes, solves the problem that glassy product can't take out, thereby effectively improves demolding performace.In sum, the glass-forming die of the technical program have simple in structure, cost is low, the easy demoulding, advantage such as easy to use.

Claims

1. glass-forming die, it comprises: a upper cores; Die once; One at described upper cores and the following set ring between the die; Reach an outside die sleeve that is used to that described upper cores is installed, descends die and set ring; It is characterized in that described set ring sidewall is provided with a plurality of through holes, and described outside die sleeve sidewall is provided with a plurality of through holes and communicates with a plurality of through holes of described set ring sidewall.

2. glass-forming die as claimed in claim 1 is characterized in that, described set ring comprises that the first part and that a sidewall is provided with a plurality of through holes cooperates localized second section with following die.

3. glass-forming die as claimed in claim 2 is characterized in that, the inwall of described first part is an inversed taper platform shape.

4. glass-forming die as claimed in claim 3 is characterized in that, the axial along continuous straight runs setting of the through hole of described first part sidewall.

5. glass-forming die as claimed in claim 4 is characterized in that, described first part is positioned on the residing level attitude of mold pressing surface of following die.

6. glass-forming die as claimed in claim 5 is characterized in that, described set ring outer wall is provided with an annular recesses and communicates with a plurality of through holes of described first part sidewall.

7. glass-forming die as claimed in claim 6 is characterized in that, a plurality of through holes of described first part sidewall are distributed on two radial cross-sections of described first part.

8. glass-forming die as claimed in claim 7 is characterized in that, a plurality of through holes of described first part sidewall are symmetrically distributed on described radial cross-section.

9. glass-forming die as claimed in claim 8 is characterized in that, in the through hole of described symmetrical distribution, is positioned near the aperture of the through hole on the radial cross-section of following die bigger.

10. glass-forming die as claimed in claim 9 is characterized in that, the mold pressing surface of die was an aspheric surface under described upper cores reached.