CN203794772U

CN203794772U - Glass aspheric-surface optical lens die-casting die structure

Info

Publication number: CN203794772U
Application number: CN201420194979.6U
Authority: CN
Inventors: 李映强; 邱盛平
Original assignee: Union Optech Co Ltd
Current assignee: Union Optech Co Ltd
Priority date: 2014-04-21
Filing date: 2014-04-21
Publication date: 2014-08-27
Anticipated expiration: 2024-04-21

Abstract

The utility model relates to a glass aspheric-surface optical lens die-casting die structure which comprises a lower die core, an upper die core and a die sleeve. A die sleeve hole is formed in the die sleeve. The lower die core and the upper die core are arranged in the die sleeve hole. A conic surface matching locating structure is arranged on the matched end face of the lower die core and the upper die core. According to the die structure, glass aspheric-surface eccentric accuracy can be improved and it can be guaranteed that eccentric stability in production is good.

Description

Glass aspheric optical lens structure of cast die

[technical field]

The utility model is about a kind of glass aspheric optical lens structure of cast die, especially for improving in glass aspheric optical lens the optical mirror slip structure of cast die of eccentric precision between two aspheric surfaces.

[background technology]

Traditional glass aspheric optical lens structure of cast die be in die sleeve, load onto, lower die, due to processing and the error that coordinates, the core shift of the die casting shaping eyeglass of this structure can only guarantee below 5 μ.Along with the increase of monitoring camera pixel and resolving power, just more and more higher to the bias requirement of glass aspherical lens, bias need to be below 3 μ, and the eyeglass even having requires below 1.5 μ, and camera lens solution picture just can reach necessary requirement.Eccentric precision 3 μ between two aspheric surfaces that industry can guarantee at present, very difficult concerning existing structure of cast die, 1.5 μ are with interior cannot realization (just randomness, cannot produce in a large number).

[utility model content]

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of mould structure that can improve the eccentric precision of glass aspheric surface and guarantee core shift good stability in production is provided.

For above-mentioned purpose, the utility model by the following technical solutions:

A kind of glass aspheric optical lens structure of cast die, include counterdie die 1 and patrix die 2 and die sleeve 3, on die sleeve 3, be provided with die sleeve hole 31, in die sleeve hole 31, be provided with counterdie die 1 and patrix die 2, it is characterized in that the end face matching at described counterdie die 1 and patrix die 2 is provided with cone match locating structure 4.

Glass aspheric optical lens structure of cast die as above, it is characterized in that: described cone match locating structure 4 includes the inner conical surface 4a that is arranged on counterdie die 1 end face, end face at patrix die 2 is provided with male cone (strobilus masculinus) 4b, thereby the tapering of described inner conical surface 4a and male cone (strobilus masculinus) 4b is identical and both location that cooperatively interact make counterdie die 1 and patrix die 2 keep concentrics.

Glass aspheric optical lens structure of cast die as above, is characterized in that: described in the die sleeve hole 31 use ultraprecise jig grinders that are located on die sleeve 3 from a side is disposable, machine.

Glass aspheric optical lens structure of cast die as above, is characterized in that: described patrix die 2 is that minim gap coordinates with the die sleeve hole 31 of die sleeve 3.

Glass aspheric optical lens structure of cast die as above, is characterized in that: on patrix die 2, be provided with air discharge duct 22 and upper air-vent 23.

Glass aspheric optical lens structure of cast die as above, is characterized in that: on counterdie die 1, be designed with lower air discharge duct 12 and lower venting hole 13.

Glass aspheric optical lens structure of cast die as above, is characterized in that: on die sleeve 3, be designed with venting hole 32.

The beneficial effects of the utility model have:

1, between the upper and lower mould die of each structure of cast die, there is cone match locating structure, upper and lower mould die coordinates extruding afterwards, make the moulding of glass aspherical lens, die adjustment is the rear core shift precision that just can guarantee well each shaping eyeglass in production well, has avoided the core shift unstable of each casting forming in traditional structure.

2, at each casting forming, in the cycle, upper and lower mould will folding 1 time, during matched moulds, need to rely on upper and lower mould die to coordinate rough resetting and guide effect with the through hole of die sleeve, and then the cone match locating structure of die plays accurate location, guarantee the core shift precision between two aspheric surfaces.Avoided the core shift unstable of each casting forming in traditional structure.

[accompanying drawing explanation]

Fig. 1 mold integral structural representation.

Fig. 2 counterdie mould core structure schematic diagram.

Fig. 3 patrix mould core structure schematic diagram.

Fig. 4 is die sleeve structure schematic diagram.

Fig. 5 is mold integral structural representation.

[embodiment]

Below in conjunction with accompanying drawing and embodiment, the utility model is elaborated:

As shown in Figure 1, a kind of glass aspheric optical lens structure of cast die, comprises lower die 1, upper cores 2 and die sleeve 3, is provided with die sleeve hole 31 on die sleeve 3.In die sleeve hole 31, be provided with counterdie die 1 and patrix die 2.The end face matching at described counterdie die 1 and patrix die 2 is provided with cone match locating structure 4.Described die sleeve hole 31 is to machine from a side is disposable with ultraprecise jig grinder, adopts cylindricity that this complete processing can guarantee hole 31 below 2 μ, and an aperture cun method tolerance can guarantee in ± 1 μ.

Because counterdie die 1 and patrix die 2 and die sleeve 3 meeting folding mould are 1 time in each casting forming cycle, during matched moulds, counterdie die 1 and patrix die 2 need to rely on the rough resetting guide effect in 31, hole in die sleeve 3, rely on cone match locating structure 4 precision-fit in counterdie die 1 and patrix die 2 to play accurate resetting effect, the coaxial accuracy while guaranteeing again matched moulds between upper and lower mould die.

As shown in Figure 2,3, specifically, described cone match locating structure 4 includes and is arranged on the inner conical surface 4a of counterdie die 1 and at the male cone (strobilus masculinus) 4b of patrix die 2, the tapering of described inner conical surface 4a and male cone (strobilus masculinus) 4b is identical and thereby both location that cooperatively interact make counterdie die and patrix die keep concentric, has guaranteed so well accurate resetting effect.

Described patrix die 2 is that minim gap coordinates with the die sleeve hole 31 in die sleeve 3.The suitable shift position of patrix die 2 when inner conical surface 4a and male cone (strobilus masculinus) 4b occur to coordinate in matched moulds process, to guarantee conical surface precision-fit.

The aspherical shape 11 of the inner conical surface 4a of described counterdie die 1 and the portion that is placed in one is with disposable the machining of ultrahigh precision die processing machine, and assurance right alignment is each other in 0.5 μ.At the male cone (strobilus masculinus) 4b of patrix die 2 and the aspherical shape 21 of the portion that is placed in one, be with disposable the machining of ultrahigh precision die processing machine.Assurance right alignment is each other in 0.5 μ.

The lower venting hole 13 that is provided with lower air discharge duct 12 and communicates with aspherical surface forming space on counterdie die 1.Make lower air discharge duct 12 and lower venting hole 13 form exhaust system.

As shown in Figure 5, exhaust system also can design upper air discharge duct 22 and the upper air-vent 23 on patrix die 2.

As shown in Figure 4, be designed with venting hole 32 on the sidewall of die sleeve 3, venting hole 32 communicates with air discharge duct 12 on counterdie die 1, and while guaranteeing casting forming, gas can smooth and easyly be discharged to outside mould, guarantees the quality of shaping eyeglass.

Claims

1. a glass aspheric optical lens structure of cast die, include counterdie die (1) and patrix die (2) and die sleeve (3), on die sleeve (3), be provided with die sleeve hole (31), in die sleeve hole (31), be provided with counterdie die (1) and patrix die (2), it is characterized in that the end face matching at described counterdie die (1) and patrix die (2) is provided with cone match locating structure (4).

2. glass aspheric optical lens structure of cast die as claimed in claim 1, it is characterized in that: described cone match locating structure (4) includes the inner conical surface (4a) that is arranged on counterdie die (1) end face, end face at patrix die (2) is provided with male cone (strobilus masculinus) (4b), described inner conical surface (4a) with male cone (strobilus masculinus) (4b) thus tapering be identical and both location that cooperatively interact make counterdie die (1) and patrix die (2) maintenance concentric.

3. glass aspheric optical lens structure of cast die as claimed in claim 1, is characterized in that: described in the die sleeve hole (31) that is located on die sleeve (3) with ultraprecise jig grinder, from a side is disposable, machine.

4. the glass aspheric optical lens structure of cast die as described in claim 1 or 2 or 3, is characterized in that: described patrix die (2) is that minim gap coordinates with the die sleeve hole (31) of die sleeve (3).

5. the glass aspheric optical lens structure of cast die as described in claim 1 or 2 or 3, is characterized in that: on patrix die (2), be provided with upper air discharge duct (22) and upper air-vent (23).

6. the glass aspheric optical lens structure of cast die as described in claim 1 or 2 or 3, is characterized in that: on counterdie die (1), be designed with lower air discharge duct (12) and lower venting hole (13).

7. the glass aspheric optical lens structure of cast die as described in claim 1 or 2 or 3, is characterized in that: on die sleeve (3), be designed with venting hole (32).