CN201102933Y

CN201102933Y - Core lift-out structure for manufacturing optical lens

Info

Publication number: CN201102933Y
Application number: CNU2007201289423U
Authority: CN
Inventors: 刘淑兰
Original assignee: SENYUN Corp
Current assignee: Senyun precision Phenix Optical Company Limited
Priority date: 2007-08-23
Filing date: 2007-08-23
Publication date: 2008-08-20
Anticipated expiration: 2017-08-23

Abstract

The utility model provides a die core ejection structure for producing optical lenses, comprising a male die seat and a male die seat, wherein, the female die seat is provided with a ball axle sleeve, a piston die core, a liner and a holding pole. The cylindrical piston die core and the cylindrical ball axle sleeve corresponding to the axle are connected to a round hole of the male die seat. The ball axle sleeve is provided with a plurality of round balls. One side of the ball axle sleeve is tangent with the inner wall of the male die seat by the round ball while the other side of the ball axle sleeve is tangent with the ring wall of the piston die core by the round ball. The forming section in one terminal of the piston die core is tangent with the surface of the male die seat and corresponds to the forming section and surface of the female die seat. The female die seat is provided with a forming section and a surface. The forming section and the surface correspond to the forming section and the surface of the male die seat to form a die delve structure, thus achieving the purpose of producing optical lenses of high precision and reducing the bad product.

Description

A kind of die ejecting structure that is used to make optical mirror slip

Technical field

The utility model relates to a kind of die ejecting structure that is used to make optical mirror slip, and what be particularly related to is a kind of accurate moulding device that is applied in accurate ejection formation, with reach improve in the optical mirror slip processing procedure core shift and crooked be purpose.

Background technology

Generally be used in the Jet forming machine of optical mirror slip, see also shown in Figure 1, described mould 1 comprises a fixed first die 10 and active second die 11, behind described second die 11 and first die, 10 matched moulds, form a die cavity 13 at two contact jaws with specified shape, the liquid mirror body stock of molten state is injected described die cavity 13, under a specified pressure and temperature, keep certain hour, water channel is cooled under certain specified temp around the warp, the distance of separating described first die 10 and second die 11, be the die sinking action of common name, and second die 11 removed from first die 10, optical mirror slip after described portion's moulding just temporarily is retained on second die 11, the part of the described demoulding again, the existing practice is to contain to establish together mandrels stem 12 on described second die 11, the optical mirror slip of thrust by axostylus axostyle 12 after with described moulding pushes away described second die 11 junction surfaces, because described axostylus axostyle 12 is along leading in described second die, 11 walls, must there be a gap θ between described axostylus axostyle 12 and described second die, 11 walls, mold action when described again second die 11 has matched moulds concurrently, so size of described gap θ, produce the size of circumference burr in the time that mold can being influenced after the described optical mirror slip moulding, and then influence the accuracy of described optical mirror slip curvature and central point, when becoming a camera lens by combination multi-disc eyeglass, the precision of described center-spot will influence the quality of described combination rear lens; For the optical mirror slip that uses plastics to make via ejection formation, control difficulty owing to lens dimension and described second die, 11 wall gap deflections after the moulding in the moulding process, make the optical mirror slip of high degree of accuracy, its technology is difficult relatively many, so for a long time in the optical mirror slip field of high degree of accuracy, can't be widely adopted always, in the time must using the optical lens of high degree of accuracy, have to use expensive glass grinding camera lens;

In the manufacturing technology of existing optical lens, all be to utilize a mould to cooperate paired die to form a die cavity usually, under the pyritous environment, make the remollescent plastics, be deformed into required shape, and after cooling, obtain required optical lens; " die structure and the precise forming mold " content description that is disclosed according to certificate number I247662 number of TaiWan, China patent gazette, described die structure utilizes jet-out plastic in described first forming part and the second forming part place moulded section, because described first die is can active, requirement in response to the different number of degrees of optical mirror slip, crack between must needing to be provided with necessarily between described first die and second die, therefore, in the process of ejection formation, described first die advances in described cylindrical mould, may produce departing from of certain angle, be commonly called as core shift, thereby cause the abrasion of described cylindrical mould inwall, cause when producing the gap and making described first die advance, the crooked limit of inclining, when the described plastics of compression moulding, though revisal by described heat-resisting expanding layer during moulding, described first die can produce departing from of certain angle at the propelling initial stage, expansion correcting along with described heat-resisting expanding layer, make described first die medullary ray and the second die disalignment, one gap, when described heat-resisting expanding layer expands when filling up described cylindrical mould inwall, revising the described first die medullary ray and the second die medullary ray overlaps, core shift phenomenon when improving described die structure matched moulds moulding, burr are diminished, lower the crooked generation of the unilateral type of described optical frames, right described first, still there is a gap thickness (above-mentioned thickness is between 1～6 micron (μ m)) between two dies and inwall, real and the seamless driving fit of the utility model can reach 0.03 μ m, and is far apart;

Therefore, how to provide a kind of requirements for high precision and a kind of optical mould ejecting structure of eliminating the core shift phenomenon when improving optical mirror slip and producing, be the place of the technical difficulties that this case utility model designer institute desire solves.

Summary of the invention

The purpose of this utility model is, provides a kind of die ejecting structure that is used to make optical mirror slip, in order to overcome above-mentioned defective.

For achieving the above object, the technical solution adopted in the utility model is, a kind of die ejecting structure that is used to make optical mirror slip is provided, and it comprises:

One male die seat, it is provided with a ball axle sleeve, one piston die, one liner and a pole, described piston die and ball axle sleeve are column and respective shaft is connected in the described male die seat circular hole, and described ball axle sleeve is laid with a plurality of round balls, described ball axle sleeve one side is tangent by described round ball and described male die seat inwall, described again ball axle sleeve opposite side is also by described round ball and tangent the establishing of described piston die ring wall, the forming part of described piston die one end and the planar portions of described male die seat are tangent, and the forming part of corresponding described female die seat and planar portions;

One female die seat, it is provided with a forming part and planar portions, and described forming part, planar portions are corresponding with planar portions with the forming part of described male die seat again, and form a die cavity structure;

The beneficial effects of the utility model are compared with the prior art, connect airtight with the slip of no gap by seamless between ball axle sleeve in the described male die seat and piston die ring wall and to eject start, eliminating the lens eccentric, the crooked phenomenon that are taken place in the optical mirror slip injection molding manufacture procedure, is purpose to reach a kind of tool high degree of accuracy of production and to reduce the defective products optical mirror slip.

Description of drawings

Fig. 1 is general die ejecting structure sectional view;

Fig. 2 is a die ejecting structure schematic perspective view of the present utility model;

Fig. 3 is a die ejecting structure decomposing schematic representation of the present utility model;

Fig. 4 is a die ejecting structure application principle sectional view of the present utility model;

Fig. 5 is a die ejecting structure matched moulds moulding action synoptic diagram of the present utility model;

Fig. 6 divides mould to eject the action synoptic diagram for die ejecting structure of the present utility model.

Description of reference numerals: 1-mould; 10-first die; 11-second die; The 12-axostylus axostyle; The 13-die cavity; θ-gap; The 30-male die seat; The 301-circular hole; The 302-planar portions; 303-runner ditch; 31-ball axle sleeve; 310-circle ball; The 311-point of contact; 312-axle hole; 313-post shell; 32-piston die; The 33-liner; 34-pole; The 35-female die seat; The 320-forming part; The 350-forming part; The 351-planar portions; M-optical mirror slip plastics; The Q-die cavity; The A-medullary ray; The B-medullary ray; The C-medullary ray.

Embodiment

Below in conjunction with accompanying drawing, to this novel above-mentionedly is described in more detail with other technical characterictic and advantage.

See also Fig. 2, shown in Figure 3, be die ejecting structure synoptic diagram of the present utility model, described die ejecting structure mainly comprises a male die seat 30, one ball axle sleeve 31, one piston die 32, one female die seat 35, one liner 33 and a pole 34, please consult shown in Figure 5 again, wherein said female die seat 35 is a column, the one end is provided with a forming part 350 and planar portions 351 around forming part 350, be arranged with a runner ditch 303 in described planar portions 351, and the runner ditch 303 of corresponding described male die seat 30 planar portions 302, be embedded in correspondence with each other and mutually and be a columnar structure, described male die seat 30 is corresponding sides in described female die seat 35, and described male die seat 30 corresponding described female die seat 35 and also be a column, the one end is provided with a circular hole 301 and planar portions 302 around described circular hole, and be arranged with a runner ditch 303 in described planar portions 302, and the runner ditch 303 of corresponding described female die seat 35 planar portions 351, be embedded in correspondence with each other and mutually and be a columnar structure, described again male die seat 30 circular holes 301 include establishes a piston die 32, described piston die 32 is a cylindricality, the one end is provided with a forming part 320, and described forming part 320 is also tangent with described male die seat 30 circular holes 301 inwalls, its the other end is tangent with described pole by described liner 33, described ball axle sleeve 31 is a hollow cylinder, its damaged surface is laid a plurality of round balls 310, form the cylindricality axle sleeve of a similar bearing, described ball axle sleeve 31 outer shrouds are by a plurality of round balls 310 and tangent the establishing of described male die seat 30 inwalls, ring is tangent with described piston die 32 external annulus by a plurality of round balls 310 in the described again ball axle sleeve 31, the forming part 320 of described piston die 32 1 ends, tangent with the planar portions 302 of described male die seat 30, corresponding with the forming part 350 of described female die seat 35 again with planar portions 351, and form a die cavity structure;

Please cooperate consult shown in Figure 4, be the utility model application principle sectional view, described ball axle sleeve 31 is a hollow cylinder, its post shell 313 can be attrition resistant metal alloy compositions with circle ball 310 materials, and described its expansion is that number must be greater than described piston die 32, optical mirror slip plastics M and male die seat 30, pressure and the temperature in described die cavity moulding process, transmitted as optical mirror slip plastics M, when being delivered to described ball axle sleeve 31, can prevent that described ball axle sleeve 31 is heated and pressure influence, because of opening outside expanding that piston die 32 is stuck, or make described male die seat 30 produce distortion, and optimum regime of the present utility model is that described round ball 310 is to be netted to gather in 31 holes 312 of described ball axle sleeve, and adjacent round ball 310 is also continuous with same center of circle serial connection, according to the point-line-surface principle, when described piston die 32 outer shrouds tangent by described round ball 310 1 point of contacts 311 with described ball axle sleeve 31, its piston die 32 medullary ray A are equidistant with described ball axle sleeve 31 medullary ray B and two medullary rays are also parallel each other, described again male die seat 30 inwalls are tangent by described round ball 310 1 point of contacts 311 and described ball axle sleeve 31, its male die seat 30 inwall medullary ray C are equidistant with described ball axle sleeve 31 medullary ray B and two medullary rays are also parallel each other, the crack becomes at 0～0.03 μ m between 302 of the forming part 320 of described piston die 32 and the planar portions of male die seat 30), and described piston die 32 external diameters equal circular hole 301 internal diameters of described male die seat 30, when leading moves in described male die seat 30 by described piston die 32, described ball axle sleeve 31 is a seamless slip with described male die seat 30 inwalls and piston die 32, and described piston die 32 is advanced in described male die seat 30 circular holes 301 and is also kept the start of seamless centering when ejecting described optical mirror slip, to reach the accurate mass of the unilateral type curvature of described optical frames after the moulding;

Please consult Fig. 5 again, shown in Figure 6, when male die seat 30 engages with fixed female die seat 35 (matched moulds moulding), the forming part 320 of described male die seat 30 planar portions 302 and described piston die 32, by suiting of described ball axle sleeve 31, make that the crack becomes in seamless driving fit between the planar portions 302 of the forming part 320 of described piston die 32 and male die seat 30, and the planar portions 351 and forming part 350 of corresponding described female die seat 35, and form a die cavity Q structure, described optical mirror slip plastics M is filled with described die cavity Q via described runner ditch 303, and after treating described optical mirror slip plastics M cooling, make described male die seat 30 starts and separate (dividing mould to eject) with described female die seat 35, this moment and interlock eject equipment (figure does not show), by described pole 34, liner 33 is coupling with described piston die 32, and lead solid by described ball axle sleeve 31 location, described piston die 32 is passed in the circular hole 301 of described male die seat 30, and eject described cooled optical mirror slip plastics M by the forming part 320 of described piston die 32 ends, promptly finish round-robin ejection formation processing.

For also being added, the utility model shows its progressive and practicality, hereby as follows with one comparative analysis of existing do:

Prior art:

1, the model structure of existing ejection formation, described die easily produce core shift and crooked phenomenon, easily cause Camera lens curvature is inhomogeneous.

2, the optical mirror slip fraction defective is too high, and causes the empty consumption of material, and manufacturing cost also increases many relatively. 3, The optical mirror slip production of different curvature, the size in the described forming part of palpus control gap, its technical difficulty

Degree improves relatively.

The utility model advantage:

1, eject start by described ball axle sleeve firm seamless, the core shift in described active piston die axle center and crooked phenomenon are disappeared, the yield quality also promotes relatively when optical lens mold moulding.

2, the simple in structure and various die design that is easy to arrange in pairs or groups, the low and steady quality of described finished product fraction defective, finished product is also than the tool market competitiveness relatively.

In sum, the utility model is being broken through under the previous technical pattern, really reached the effect that institute's desire is promoted, and also non-be familiar with described skill person institute easily full of beard with, moreover, not open before the utility model application, the progressive of its tool, practicality, show the application important document that has met novel patent, file an application in accordance with the law.

More than explanation is novel just illustrative for this; and it is nonrestrictive; those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited; can make many modifications; change, or equivalence, but all will fall in the protection domain of the present utility model.

Claims

1. die ejecting structure that is used to make optical mirror slip, it is characterized in that: it comprises:

One male die seat, it is provided with a ball axle sleeve, one piston die, described piston die and ball axle sleeve are that column and respective shaft are connected in the described male die seat circular hole, and described ball axle sleeve is laid with a plurality of round balls, described ball axle sleeve one side is tangent by described round ball and described male die seat inwall, described ball axle sleeve opposite side is also tangent by described round ball and described piston die external annulus, the forming part of described piston die one end and the planar portions of described male die seat are tangent, and corresponding with planar portions with the forming part of described female die seat;

One female die seat, it is provided with a forming part and planar portions, and described forming part, planar portions are corresponding with planar portions with the forming part of described male die seat, form a die cavity structure.

2. a kind of die ejecting structure that is used to make optical mirror slip according to claim 1, it is characterized in that: described ball axle sleeve is a hollow cylinder, described post shell is attrition resistant metal alloy compositions with circle ball material.

3. a kind of die ejecting structure that is used to make optical mirror slip according to claim 1, it is characterized in that: the gap thickness of described piston die and described ball axle sleeve is 0～0.03 micron.

4. a kind of die ejecting structure that is used to make optical mirror slip according to claim 1, it is characterized in that: the gap thickness of described male die seat and described ball axle sleeve is 0～0.03 micron.

5. a kind of die ejecting structure that is used to make optical mirror slip according to claim 1, it is characterized in that: the forming part of described piston die one end is arc structure.

6. a kind of die ejecting structure that is used to make optical mirror slip according to claim 1 is characterized in that: the described piston die the other end is connected with described pole by liner.

7. a kind of die ejecting structure that is used to make optical mirror slip according to claim 1, it is characterized in that: described male die seat planar portions is arranged with a runner ditch.

8. a kind of die ejecting structure that is used to make optical mirror slip according to claim 1, it is characterized in that: described female die seat planar portions is arranged with a runner ditch.

9. according to claim 7 or 8 described a kind of die ejecting structures that are used to make optical mirror slip, it is characterized in that: it is a columnar structure that described runner ditch is embedded in correspondence with each other and mutually.