CN2763266Y

CN2763266Y - Equipment for moulding lens

Info

Publication number: CN2763266Y
Application number: CNU2004201027408U
Authority: CN
Inventors: 邱文赐
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: 2004-12-11
Filing date: 2004-12-11
Publication date: 2006-03-08
Anticipated expiration: 2014-12-11

Abstract

The utility model relates to a lens moulding device, which comprises a first body, an upper mould core, a second body and a lower mould core. The utility model also comprises a plurality of positioning mechanisms and a release push rod, wherein the positioning mechanisms are distributed in the body, and each positioning mechanism is composed of a positioning rod, a spring and an adjusting screw; the spring is positioned between the positioning rod and the adjusting screw; the positioning rod is provided with a dovetail groove; the release push rod is fixed to the first body. Before the utility model is formed, the positioning mechanisms are utilized to hold a pre body to cause the pre body to be naturally positioned at the central position of the upper mould core and the lower mould core. In the process of forming, the upper mould core drives the release push rod to quickly stamp the lower mould core, the release push rod drives the positioning rod to retreat quickly to release the pre body, the upper mould core drives the release push rod to continuously extrude the lower mould core to cause the pre body to be extruded to deform to the shape of the mould cores and a pair of required moulded lens is formed.

Description

The model lens device

[technical field]

The utility model is about a kind of model lens device.

[background technology]

Progress along with Multimedia technology, digital camera, mobil phone digital camera and Kamera more and more are subjected to people's favor, and quantity required grows with each passing day, thereby eyeglass also becomes the optical module of heavy demand, and the model eyeglass can be produced on a large scale fast and satisfy this ever-increasing market requirement, but its quality and price depend on its moulding process to a great extent.

Existing model lens mold is by upper cores, following die and body constitute, in moulding process, preform is directly placed on the die face of following die, afterwards by hot mastication eyeglass preform, and pressurization makes it be deformed into the die shape, become required model eyeglass, can preform be placed in mold center accurately in moulding process, it is the important factor of a decision moulding product quality, reach the purpose of self-centering and make the radius-of-curvature that relies on preform in the model eyeglass process at above-mentioned existing mold less than the radius-of-curvature of die down, right this method has following several shortcoming: 1. preform was difficult to realize self-centering when die was too smooth instantly; 2. preform can't be to the heart when upper cores, following die convex surface; 3. preform can be offset when the mould need were mobile in the manufacturing processed, and if preform is not in the mould center during moulding, then can the left and right sides to occur asymmetric for the eyeglass of moulding, cause moulding bad when serious even cause product rejection so that the product yield is not high, and make model eyeglass manufacturing cost higher, therefore when moulding, how preform is placed in mold center accurately, just becomes the important factor that can decision promote model eyeglass moulding yield and reduce manufacturing cost.

To above-mentioned deficiency of the prior art, a kind of model lens device that utilizes locating mechanism to improve the moulding yield during preform is accurately put is real to be necessity thereby provide.

[summary of the invention]

The purpose of this utility model is to provide a kind of model lens device that improves the eyeglass fine ratio of product.

A kind of model lens device, comprise that the first housing, upper cores, the second housing reach die down, this device comprises that also a plurality of locating mechanisms and discharge push rod, described a plurality of locating mechanism is distributed in the second housing, each locating mechanism is made up of backstay, spring and adjustment screw, this spring is between backstay and adjustment screw, and this backstay tool one dovetail groove discharges push rod and is fixed in the first housing.The backstay that utilizes locating mechanism before the moulding withstands preform by the elastic force of spring, it is positioned at the central position of upper cores, following die naturally, upper cores drives and discharges push rod die punching press downwards fast during moulding, thereby discharging push rod forces backstay to retreat the release preform rapidly, upper cores drive release push rod continues downward die extruding and makes the preform pressurized and be deformed into the die shape, becomes required model eyeglass.

The locating mechanism of the utility model by being provided with can in moulding preform fully just be put, and this process need not the manpower adjustment, thereby avoid preform generation deflection and unbalance stress, improve formed precision, thereby improved the yield of eyeglass manufacturing, and convenient the use.

[description of drawings]

Fig. 1 is the schematic cross-sectional view of the utility model embodiment;

Fig. 2 is the sectional view of Fig. 1 along the II-II direction;

Fig. 3 is the moulding process synoptic diagram of the utility model embodiment;

Fig. 4 is the moulding of the utility model embodiment synoptic diagram that finishes.

[embodiment]

See also Fig. 1 and Fig. 2, model lens device of the present utility model mainly is made up of the first housing 10, upper cores 20, the second housing 30, following die 40 and a plurality of locating mechanism 50 (having three in the present embodiment) and release push rod 60.This upper cores 20 and following die 40 coaxial settings, intermediate formation one die cavity, the first housing 10 and the second housing 30 be fixedly upper cores 20 and following die 40 respectively, and locating mechanism 50 is distributed in the second housing 30.Discharge push rod 60 and be fixed in the first housing 10.Locating mechanism 50 is made up of backstay 51, spring 52, adjustment screw 53.

The second housing 30 tops are provided with more than a plurality of locating mechanism 50 equal amtss a through hole 31, and the diameter of this through hole 31 is with to adjust screw 53 suitable, and near the outer face be provided with adjust screw 53 match within screw thread.Adjust that screw 53 embeds in the through holes 31 and with its within threads engaged, and stay a gap between end face outside its top and the through hole 31, so that adjust that screw 53 can screw out in through hole 31 in or precession with the variation of cooperation preform 70 sizes, make locating mechanism 50 can locate the preform 70 of difference sizes.

Backstay 51 links to each other with adjustment screw 53 bottoms by spring 52, spring 52 1 ends are replaced the bottom of adjusting screw 53, the other end is replaced one of backstay 51 end face, places through hole 31 together, makes backstay 51 withstand the edge of preform 70 by the elastic force of spring 52.

Backstay 51 upper end tools one dovetail groove 511, dovetail groove 511 tools one chamfering inclined-plane 512.Dovetail groove 511 is tool one through hole 513 also, and through hole 513 diameters are suitable with release push rod 60 diameters.The second housing 30 is provided with to accommodate and discharges push rod 60 and supply its perforate that moves up and down 32, and its diameter is also suitable with release push rod 60 diameters, and this perforate 32 connects in the through hole 31 of wherein slip with supplying backstay 51.Discharge push rod 60 tools one chamfering inclined-plane 601, in the moulding process, this chamfering inclined-plane 601 cooperates with the chamfering inclined-plane 512 of dovetail groove 511, the backstay 51 of locating mechanism 50 is retreated and discharges preform 70.

During assembling, pack into successively spring 52 and backstay 51, afterwards the adjustment screw 53 of each locating mechanism 50 is screwed in the through hole 31 of the second housings 30 and match with it, the degree of depth of its screw-in is decided on the size of preform 70, make spring 52 1 ends replace the bottom of adjusting screw 53, the other end is replaced one of backstay 51 end face, and backstay 51 is under the elastic force effect of spring 52 and forward outstanding and can slide in through hole 31.During use, preform 70 is positioned in the die cavity, each backstay 51 is because the edge of preform 70 is withstood in the elastic force effect of spring 52 automatically, thereby preform 70 is fixing and be positioned at the centers of upper cores 20, time die 40 naturally, and finishes location work.

See also Fig. 3, Fig. 4, during moulding, upper cores 20 drives and discharges push rod 60 die 40 punching presses downwards fast, release push rod 60 passes the perforate 32 of the second housing 30 and inserts in the dovetail groove 511 of backstays 51 fast, the chamfering inclined-plane 512 of its chamfering inclined-plane 601 contact dovetail grooves 511 also forms a pressure, thereby this pressure retreats backstay 51 rapidly discharges preform 70, upper cores 20 drives and discharges push rods 60 and pass through hole 513 and continue downward die 40 extruding and make preform 70 pressurizeds and be deformed into the die shape, become required model eyeglass, after this manufacturing processed upper cores 20 drives and discharges push rod 60 promotion locating mechanisms 50 release preforms 70, punching press rapidly under the inertia maintaining condition of preform 70, it can effectively be avoided, and technical problems such as deflection easily take place in preform 70 in the prior art, thereby reach the purpose that improves eyeglass product molding yield.

Be appreciated that, after the utility model also can make upper cores 20 replace preform 70 and makes preform 70 that deformation in a small amount take place, promote locating mechanisms 50 and discharge preforms 70 by discharging push rod 60 again, this moment this preform 70 by upper cores 20 and down the mutual extrusion of die 40 be fixed in its center and compressive deformation to the die shape.

Claims

1. model lens device, comprise the first housing, upper cores, the second housing reaches die down, this upper cores is fixed in the first housing, this time die is fixed in the second housing, described upper cores and the coaxial setting of following die, it is characterized in that: above-mentioned model lens device further comprises a plurality of locating mechanisms and discharges push rod, described a plurality of locating mechanism is distributed in the second housing, each locating mechanism is by backstay, spring and adjustment screw are formed, this spring is between backstay and adjustment screw, this backstay tool one dovetail groove, described release push rod is fixed in the first housing, and it cooperates the promotion backstay with the dovetail groove of backstay.

2. model lens device as claimed in claim 1 is characterized in that: the number of described a plurality of locating mechanisms is three.

3. model lens device as claimed in claim 1 is characterized in that: the described second housing is provided with and is used to accommodate a through hole more than above-mentioned a plurality of locating mechanism.

4. model lens device as claimed in claim 3 is characterized in that: described through hole is provided with internal thread near the outer face.

5. model lens device as claimed in claim 4 is characterized in that: described adjustment screw place in the through hole of the second housing and with its within threads engaged.

6. model lens device as claimed in claim 1 is characterized in that: described backstay links to each other bottom adjusting screw by spring, and this spring one end is replaced the bottom of adjusting screw, and the other end is replaced one of backstay end face.

7. model lens device as claimed in claim 1 is characterized in that: the dovetail groove tool one chamfering inclined-plane of described backstay.

8. model lens device as claimed in claim 1 is characterized in that: dovetail groove tool one through hole of described backstay, its diameter is suitable with the release rod diameter.

9. model lens device as claimed in claim 7 is characterized in that: a chamfering inclined-plane is established in described release push rod lower end, and it cooperates with the chamfering inclined-plane of described dovetail groove.

10. model lens device as claimed in claim 1 is characterized in that: the described second housing is established one and is accommodated the perforate that the release push rod moves up and down.