CN1978352A

CN1978352A - Floating precision positioning mould

Info

Publication number: CN1978352A
Application number: CNA200510101999XA
Authority: CN
Inventors: 蔡明江; 张仁淙
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: 2005-12-02
Filing date: 2005-12-02
Publication date: 2007-06-13
Anticipated expiration: 2025-12-02
Also published as: CN1978352B

Abstract

This invention relates to a precision aligning die including: an upper mold and a lower mold, in which, said lower mold includes a base, a die and multiple regulating elements and an open-end on the base, said die is held in the open-end of the lower base with a clearance with the side wall of the open-end, the multiple regulating elements can generate a magnetic field mounted at a suitable position of the lower base and the die, said floated precision aligning die utilizes magnetic suspension theory to regulate the lower die without interference of rough location or precise location.

Description

Floating precision is to position mould

[technical field]

The invention relates to a kind of mould, especially about a kind of floating precision to position mould.

[background technology]

Along with the continuous development and change of the science and technology and the market requirement, manufacturer constantly releases taking pictures that function renewal regenerates and use portable electronic equipment, as the mobile telephone that attaches camera function and digital camera etc.This portable electronic equipment mainly adopts plastic aspherical element eyeglass and glass aspherical lens with the camera lens module.

No matter be plastic aspherical element eyeglass or glass aspherical lens, its design process is at first begun by optics emulation, thereby determines each surperficial curvature shapes of each optical lens, carries out lens mold design making and die processing afterwards again.The inside and outside two sides of the eyeglass shape of employing optical mirror slip mould manufacturing is decided by the die shape of patrix and counterdie, because the lens surface accuracy requirement is quite high, so the mould upper and lower mould aligning accuracy of machining lens requires higher.

General mould adopts the upper and lower mould aligning accuracy of fine positioning pin raising mould, the structure of existing mold as shown in Figure 1.This mould comprises patrix 1 and counterdie 2, and patrix 1 comprises upper bolster 11 and upper cores 12, and counterdie 2 comprises that die shoe 21 reaches die 22 down.Upper bolster 11 and die shoe 21 are cubes, all have opening (figure is mark not) on it, and die 22 all was fastened in the opening of upper bolster 11 and die shoe 21 under upper cores 12 reached.Be symmetrical arranged four guideposts 211 around the following die 22 of die shoe 21, and die 22 zygomorphy are provided with two fine positioning pins 213 down.The correspondence position of upper bolster 11 is provided with four pilot holes 111 and two dowel holes 113.Following die 22 middle parts are provided with four die cavities 222, and upper cores 12 correspondence positions are provided with four die cavities 122.When using this mould to manufacture, in patrix 1 and counterdie 2 matched moulds processes, guidepost 211 by die shoe 21 engages the realization coarse positioning mutually with the pilot hole 111 of upper bolster 11, the fine positioning pin 213 of die shoe 21 engages mutually with the dowel hole of upper bolster 11 113 realizes fine positioning, thereby makes the die cavity 222 of die shoe 21 combine four die cavities of formation with the die cavity 122 of upper bolster 11.

Though this kind mould can process the eyeglass desired shape, yet, fine positioning is subjected to the interference of die holder guidepost 211 easily, and fine positioning pin 213 easily causes 213 wearing and tearing of fine positioning pin with dowel hole 113 interference, cause bearing accuracy assembly error lower or die and die holder bigger, and die life is shorter, and eyeglass moulding product fraction defective is higher.

[summary of the invention]

At above problem, be necessary to provide a kind of aligning accuracy height, life-span long mould structure.

A kind of floating precision is to position mould, and it comprises a patrix and a counterdie, and wherein, this counterdie comprises a die shoe, once die and a plurality of regulatory element, opens an opening on this die shoe; This time die is placed in the opening of die shoe, and die can move in the die shoe opening down.

Compared to prior art, described floating precision utilizes magnetic to float principle to position mould, makes down the die adjustment of floating, and there is not the interference of coarse positioning and fine positioning, prolong die life, also made moulding product concentricity size reach best simultaneously, improved the products production yield.

[description of drawings]

Fig. 1 is the structural representation of an existing mold;

Fig. 2 is the schematic perspective view of floating precision of the present invention to the position mould better embodiment;

Fig. 3 is the counterdie exploded perspective synoptic diagram of floating precision of the present invention to the position mould better embodiment;

Fig. 4 is the counterdie assembling schematic perspective view of floating precision of the present invention to the position mould better embodiment.

[embodiment]

Floating precision of the present invention is example to the better embodiment of position mould with the mould of plastics of ejection formation eyeglass.

See also shown in Figure 2ly, this mould comprises a patrix 4, a counterdie 5, a plurality of regulatory element and two retaining components, and wherein these a plurality of regulatory elements and retaining component all are arranged in the counterdie 5.

Patrix 4 is roughly cubes, and it comprises a upper bolster 42 and a upper cores 44.An opening (figure is mark not) is opened at these upper bolster 42 middle parts, and upper cores 44 is fastened in wherein.The corner location symmetry of this upper bolster 42 offers pilot hole 420.Upper cores 44 is exposed the end face central position of upper bolster 42 and is opened a cast gate 440, offers four die cavities 442 successively around this

cast gate

440, and 442 of cast gate 440 and this die cavities are established four running channels 444, and cast gate 440 is connected with four die cavities 442 by this running channel 444; Upper cores 44 is exposed the end surface side of upper bolster 42 along the position, is symmetrical arranged two dowel holes 446.

See also Fig. 3 and shown in Figure 4, counterdie 5 is roughly cubes, and it comprises that a die shoe 52 reaches die 54.An approximate rectangular opening 520 is opened at these die shoe 52 middle parts, is symmetrical arranged four guideposts 522 on pilot hole 420 positions of the corresponding upper bolster 42 in the top that this opening is 520 4 jiaos.Relative two inwalls of opening 520 are offered an adjustment hole that runs through 524 respectively, are provided with internal thread in this adjustment hole 524.This time die 54 approximate cubess match with opening 520 shapes of die shoe 52.Cast gate 440 places of the corresponding upper cores 44 in the end face central position of following die 54 offer a cast gate 540, die cavity 442 places around this cast gate 540 and corresponding upper cores 44 have four die cavities 542 successively, offer four running channels 544 between cast gate 540 and this die cavity 542, and cast gate 540 is connected with die cavity 542 by this running channel 544; The dowel hole 446 of the corresponding upper cores 44 in the position, edge of following die 54 is established a fine positioning pin 548 respectively, and this fine positioning pin 548 matches with dowel hole 446.Following die 54 is placed in the opening 520 of die shoe 52, and leaves the gap between the sidewall of following die 54 and die shoe 52 openings 520.Following die 54 and adjustment hole 524 are offered a groove 546 respectively on the adjacent two side, and this groove 546 is an elongated slot, and is when die 54 is positioned at the opening 520 of die shoe 52 instantly, corresponding with adjustment hole 524 in the middle part of it.

In the present embodiment, this regulatory element is a plurality of magnetic parts 6, and it can be alnico magnets, is embedded in corner location and the corner location of following die 54 correspondences, the bottom of opening 520 and the bottom of following die 54 of die shoe 52 openings 520 respectively.Wherein, homopolarities are relative respectively with the magnetic part 6 that is embedded in down die 54 corner locations to be embedded in the magnetic part 6 of corner location of die shoe 52 openings 520, can produce repulsion mutually; Also homopolarity is relative with the magnetic part 6 that is embedded in down die 54 bottoms to be embedded in the magnetic part 6 of opening 520 bottoms, can produce repulsion mutually.

This retaining component is two governing screw 7, each governing screw 7 is cylindric, its periphery is provided with outside screw, this outside screw matches with the internal thread of adjustment hole 524, the adjustment hole 524 that governing screw 7 can see through die shoe 52 screws in, the end that governing screw 7 screws in stretches into down in the groove 546 of die 54, thereby makes down die 54 can not eject die shoe 52.

During assembling, following die 54 is placed in the opening 520 of die shoe 52, again two governing screw 7 are screwed in two adjustment holes 524 respectively, its end is stretched into down in the groove 546 of die 54 sidewalls.Upper cores 44 is fastened in the opening of upper bolster 42.

In the use, patrix 4 and counterdie 5 are installed on respectively on the Jet forming machine (figure does not show), control the unlatching and the closure of this patrix 4 and counterdie 5 by this Jet forming machine.When closed, the guidepost 522 of counterdie 5 aligns pilot hole 420 corresponding on the patrix 4 respectively, and in closing course, cooperatively interact and realize coarse positioning, at this moment, the fine positioning pin 548 of following die 54 roughly aligns dowel hole 446 corresponding on the upper cores 44 respectively, in the process of being further closed, because under the magnetic part 6 repulsion effect of direction up and down, following die 54 keeps not contacting the floating state of magnetic with die shoe 52, so in closing course, fine positioning pin 548 is done trace adjustment with making down die 54 cooperating of dowel hole 446 in the opening 520 of die shoe 52, and finally realize fine positioning, be about to upper cores 44 and following die 54 closures, the die cavity 442 of upper cores 44 combines with the die cavity 542 of following die 54 and forms four die cavities.In the fine positioning process, can adjust state because of following die 54 is in to float, so fine positioning pin 548 can not cause wearing and tearing because of the interference that is subjected to guidepost 544.

Be appreciated that, the corner location that the installation site of described magnetic part 6 is not limited to die shoe 52 openings 520 reaches the corner location of die 54 correspondences down, the appropriate location reaches the position of die 54 correspondences down around can being positioned at die shoe 52 openings 520, as long as make down die 54 stress equalizations.Described magnetic part 6 also is substitutable for a plurality of hot-wire coils, and homopolarity is relative respectively for corresponding magnetic field that coil produces, energising back.Described governing screw 7 also can be other retaining component, as can be adjusting card post, and this adjusting card post is provided with a plurality of wedge shape projectioies thereon, and a plurality of intervals depression is set in adjustment hole 524, and this depression engages with wedge shape is protruding.

Described floating precision utilizes magnetic to float principle to position mould, makes down the die adjustment of floating, and does not have the interference of coarse positioning and fine positioning, has prolonged die life, also makes moulding product concentricity size reach best simultaneously, raising products production yield.

Claims

1. a floating precision is to position mould, and it comprises a patrix and a counterdie, and this counterdie matches with this patrix, and this counterdie comprises that a die shoe reaches die, opens an opening on this die shoe; This time die is placed in the opening of die shoe, it is characterized in that: this time die can move in the die shoe opening.

2. floating precision as claimed in claim 1 is to position mould, it is characterized in that: wherein said floating precision also comprises a plurality of regulatory elements to position mould, this regulatory element is magnetic part or hot-wire coil, and its bottom on every side that is embedded in the die shoe opening respectively reaches the position of die correspondence down.

3. floating precision as claimed in claim 2 is characterized in that position mould: the wherein said parameatal magnetic part of die shoe that is embedded in is relative with the magnetic part difference homopolarity that is embedded in down the die correspondence position, produces repulsion mutually; Also homopolarity is relative with the magnetic part that is embedded in down the die bottom for the magnetic part that is embedded in open bottom, produces repulsion mutually.

4. floating precision as claimed in claim 1 is to position mould, it is characterized in that: wherein said floating precision also comprises a retaining component, an adjustment hole and a groove to position mould, wherein, adjustment hole is located at an inwall of die shoe opening, it is one to run through the through hole of this inwall, is provided with internal thread in this adjustment hole.

5. floating precision as claimed in claim 4 is characterized in that position mould: wherein said groove is positioned on the sidewall that die is adjacent with adjustment hole down, and this groove is an elongated slot, and when die was positioned at the opening of die shoe instantly, the middle part of this groove was relative with adjustment hole.

6. floating precision as claimed in claim 5 is characterized in that position mould: wherein said retaining component is a governing screw, and this governing screw can screw in by the adjustment hole of die shoe, and the end that governing screw screws in stretches into down in the groove of die.

7. floating precision as claimed in claim 4 is characterized in that position mould: wherein said retaining component is an adjusting card post, on this adjusting card post a plurality of wedge shape projectioies is set, and a plurality of intervals depression is set in the adjustment hole, and this depression engages with wedge shape is protruding.

8. floating precision as claimed in claim 1 is characterized in that position mould: wherein said patrix comprises a upper bolster, and a upper cores is opened an opening on this upper bolster, and this upper cores is fastened in the opening of upper bolster.

9. floating precision as claimed in claim 8 is characterized in that position mould: wherein said upper cores is exposed the end surface side of upper bolster along the position, is symmetrical arranged two dowel holes; The dowel hole of the corresponding upper cores in the position, edge of following die is established a fine positioning pin respectively, and this fine positioning pin matches with dowel hole.

10. floating precision as claimed in claim 8 is characterized in that position mould: wherein said die shoe is arranged with four guideposts at the tip position of four jiaos of openings, and correspondence is provided with pilot hole on the upper bolster, and this guidepost and this pilot hole are used.