CN2589176Y

CN2589176Y - CD die with auxiliary air breather hole

Info

Publication number: CN2589176Y
Application number: CN 02292610
Authority: CN
Inventors: 高志文
Original assignee: Daxon Technology Inc
Current assignee: BenQ Materials Corp
Priority date: 2002-12-27
Filing date: 2002-12-27
Publication date: 2003-12-03
Anticipated expiration: 2012-12-27

Abstract

The utility model relates to a CD die with auxiliary air breather holes, which comprises a movable die, a fixed die, an external side ring body, a die cavity and a gas passage, wherein the die cavity is limitedly arranged between the fixed die and the movable die; the gas passage is positioned between the fixed die and the external side ring body, and is connected with the die cavity; in addition, the fixed die is provided with a plurality of auxiliary air breather holes connected with the gas passage; high temperature gas flows across the gas passage through the die cavity, and the discharge of gas is accelerated by the auxiliary air breather holes.

Description

CD die with assisted ventilation hole

Technical field

The utility model relates to a kind of CD die with assisted ventilation hole, particularly relates to a kind ofly by a plurality of assisted ventilations hole being set in a fixed die, and connects a gas channel, can quicken the CD die that high-temperature gas is discharged in the die cavity.

Background technology

In recent years along with the progress of science and technology, CD sheet (Compact Disk, CD) become a kind of application optical storage media quite widely, because CD sheet (CD) has advantages such as big, cheap and holding time of storage volume is long, therefore be suitable as very much the Storage Media of multimedia digital information such as storing picture, music and image.

In the manufacture process of relevant aforementioned lights disc, with a CD-ROM sheet (Compact Disc-ReadOnly Memory, CD-ROM) be example, generally must be by the Merlon (Polycarbonate of bullet shape, PC), and utilize the mode of injection moulding die casting to make transparent compact disc substrate as injection molding material; Then, via vacuum evaporation (Vacuum Evaporation) or sputter (Sputtering) program, on aforementioned transparent compact disc substrate, plate the layer of metal film, thus with as a reflecting layer, the CD sheet utilizes reflective layer reflects one laser beam, and then the numerical data of reading and recording in the CD sheet.

Wherein, above-mentioned metallic film material can be gold, silver, copper, aluminium etc., and is general then in the majority with the aluminium material of lower cost; At last, on the aforementioned metal film, apply one deck protective paint (Lacquer) again, so promptly finish an existing CD sheet finished product as protection.

As previously mentioned, the utility model improves existing CD die, wherein by Merlon (Polycarbonate, PC) as injected plastics material, (Polycarbonate, the cooling forming in a die cavity of fusion sizing material PC) is in order to produce aforesaid compact disc substrate to see through the above-mentioned Merlon of injection moulding.

At first see also Fig. 1, the figure shows the partial sectional view of existing CD die; As shown in the figure, but the mould of making compact disc substrate comprises a fixed die 1 and a dynamic model 2, but the die cavity 4 of formation one hollow between fixed die 1 and the dynamic model 2 wherein, and the shape of die cavity 4 and existing CD sheet generally are disc again; In addition, but dynamic model 2 surfaces are provided with a disc motherboard 21, by having the transitional surface 211 of channel patterns on the motherboard 21, the channel patterns that records digital information can be transferred on the compact disc substrate.

In addition, but dynamic model 2 can move along the normal direction of a vertical above-mentioned transitional surface 211, so can be beneficial to compact disc substrate carries out the demoulding after moulding action; Again, a gas passage 5 is connected in die cavity 4, and (Polycarbonate, PC) high-temperature gas that is produced after the injection moulding is discharged can to make Merlon through gas passage 5.

Yet, discharge rapidly in order to make above-mentioned high-temperature gas, connect above-mentioned die cavity 4 but in fixed die 1 or dynamic model 2, be provided with fumarole in addition; As shown in Figure 1, near the material feeding passage 110 of fixed die 1 central interior, be provided with fumarole 12, its major function is to spray a gas with the auxiliary demoulding, wherein, can make the high-temperature gas that is produced in the die cavity 4 discharge (shown in the direction of arrow) rapidly via gas passage 5 by jet when the demoulding.

Generally speaking, during high-temperature gas in utilizing above-mentioned fumarole 12 jet auxiliary discharge die cavitys 4, discharge, often need higher jet amount in order to quicken high-temperature gas; Yet the consequence that sprays into a large amount of gases often causes gas channel 5 excessive because of traffic load, and forms the phenomenon of stopping up (Choke); Thus, make residual sizing material and partial impurities condensation easily on the transitional surface 211 of motherboard 21, the result makes above-mentioned high-temperature gas discharge smoothly on the contrary, and may form the pollution of mould and motherboard 21.

Because it is above-mentioned when utilizing in the jet auxiliary discharge die cavity 4 high-temperature gas, because of gas channel 5 problems such as producing obstruction (Choke) and pollution of can't loading, the utility model is improved at this existing shortcoming, and provides one can quicken the CD die that high-temperature gas is discharged.

The utility model content

The purpose of this utility model provides a kind of CD die with assisted ventilation hole, and it is by being provided with a plurality of assisted ventilations hole in a fixed die, and connects a gas channel, to quicken the CD die that high-temperature gas is discharged in the die cavity.

The purpose of this utility model is achieved in that promptly provides a kind of CD die with assisted ventilation hole, comprising: a fixed die; But a dynamic model, but be relatively arranged on a side of this dynamic model, but this fixed die and should be limited with a die cavity between the dynamic model; One outside ring body is arranged on this mould in the mode around this die cavity; One assisted ventilation hole is arranged at a precalculated position of this fixed die; One port of export is to be formed at a side of this fixed die and this outside ring body in contrast to this die cavity direction; One gas passage between this fixed die and this outside ring body, connects this die cavity, this port of export and this assisted ventilation hole; Wherein, when the injected plastics material of high temperature after this die cavity moulding, the high-temperature gas in this die cavity flow through in regular turn this gas passage and this port of export, and quicken gas by this each assisted ventilation hole and discharge.

Concretely, the CD die that the utility model provides with assisted ventilation hole, but comprise a dynamic model, a fixed die, an outside ring body, a die cavity and a gas passage, but wherein dynamic model comprises a disc motherboard, but be arranged at the surface of dynamic model; And die cavity is between motherboard and fixed die, and outside ring body is surrounded on above-mentioned die cavity; Again, gas passage is between fixed die and outside ring body, and the connection die cavity; In addition, fixed die is provided with a material feeding passage and a plurality of assisted ventilations hole, and the material feeding passage is positioned at the fixed die central interior, and connects above-mentioned die cavity; Wherein, the assisted ventilation hole connects gas passage, and high-temperature gas is by die cavity gas coming through passage, and quickens high-temperature gas by the assisted ventilation hole and discharge.

Particularly, in CD die of the present utility model, above-mentioned assisted ventilation hole and gas passage are an acute angle theta in a side of die cavity; And above-mentioned acute angle theta is 10 to 30 degree; Wherein, by the assisted ventilation hole spray into gas to the above-mentioned gas channel with auxiliary and quicken exhaust.

In another embodiment of the present utility model, can make above-mentioned assisted ventilation hole and gas passage be an acute angle Ф in a side of the port of export again; And above-mentioned acute angle Ф is 10 to 30 degree; Wherein, the high-temperature gas in the gas passage can quicken to discharge via the assisted ventilation hole.

The utility model is by being provided with a plurality of assisted ventilations hole in fixed die, and connects gas passage, sucks or discharges gas via above-mentioned assisted ventilation hole, and the high-temperature gas that can assist and quicken in the die cavity is discharged.

Description of drawings

Fig. 1 is the partial sectional view of existing CD die;

Fig. 2 is at the cutaway view at gas passage place among the utility model first embodiment;

Fig. 3 is at the cutaway view at gas passage place among the utility model second embodiment.

The specific embodiment

Embodiment one:

The utility model is improved at existing CD die, as shown in Figure 1, but existing CD die mainly comprises a fixed die 1, a dynamic model 2 and an outside ring body 3, but wherein be limited with a die cavity 42 of fixed die 1 dynamic models, outside ring body 3 then is arranged on this mould in the mode around die cavity 4; Wherein, fixed die 1 is provided with the filling tube 11 of a hollow in central interior, and its hollow space is a material feeding passage 110, by Merlon (Polycarbonate, PC), can inject in the die cavity 4, through material feeding passage 110 to form above-mentioned compact disc substrate as an injection molding material.

In addition, but above-mentioned dynamic model 2 comprises a disc motherboard 21, but be arranged at the surface of dynamic model 2, wherein motherboard 21 can have a transitional surface 211 of channel patterns by delineation in advance, it is Merlon (Polyearbonate that the channel patterns of store digital data is transferred to the injection moulding material, PC) on the compact disc substrate, so, compact disc substrate is just reproducible after moulding to go out the numerical data identical with motherboard 21.

Wherein, but dynamic model 2 central interior are provided with a movable axis 22, drive by oil hydraulic cylinder or the vapour pressure cylinder (not icon) that is connected with movable axis 22, but dynamic model 2 can move along the normal direction of transitional surface 211; In the time will injecting sizing material, but dynamic model 2 to fixed die 1 near (Fig. 1's is right-hand), and when wanting the demoulding, then move and away from fixed die 1 along the left among the figure.

As previously mentioned, injection molding material Merlon (Polycarbonate when high temperature, PC) after die cavity 4 moulding, but dynamic model 2 is away from fixed die 1, the fumarole 12 that is arranged at fixed die 1 inside simultaneously sprays in the die cavity 4 (as shown in Figure 1) by a compressed air, so can assist compact disc substrate to break away from fixed die surface 13, thus to finish the action of the demoulding.

Again, jet by fumarole 12, the high-temperature gas that can order about in the die cavity 4 is discharged via the gas passage 5 of above-mentioned outside ring body 3 and 1 formation of fixed die; Wherein, gas passage 5 connects die cavity 4, and leads to a port of export 6, and the high-temperature gas of die cavity 4 inside can pass through gas passage 5, and is expelled to mould outer (direction as shown by arrows) by the port of export 6.

Then see also Fig. 2, this figure is the profile of the utility model first embodiment at the gas passage place.As shown in the figure, in fixed die 1, be provided with a plurality of auxiliary fumaroles 7, wherein above-mentioned auxiliary fumarole 7 connects an air pump (not shown), in gas passage 5, to spray into pressure-air, so can make when high-temperature gas is flowed through gas passage 5, because of the jet gas flow that increases in the gas passage 5 of auxiliary fumarole 7, and quicken high-temperature gas and discharge.

Especially, as shown in Figure 2, aforementioned a plurality of auxiliary fumaroles 7 almost parallel ground are arranged, and are an acute angle theta with gas channel 5 in a side of die cavity 4 ends; So, can be comparatively smooth and easy in jet injecting gas passage 5, can produce the effect of auxiliary exhaust simultaneously.

Wherein, a preferable enforcement angle of above-mentioned acute angle theta is 10 to 30 degree, sprays into a pressure-air by auxiliary fumarole 7, can take advantage of a situation along gas passage 5 and mobile towards the direction of the port of export 6, and the high-temperature gases that are accelerated in the gas channel 5 is discharged.

In the present embodiment, by a plurality of auxiliary fumaroles 7 are set, and connect gas passage 5 in fixed die 1, by injection one pressure-air gas channel 5 in, discharge with the high-temperature gas that quickens in the gas channel 5, so can avoid producing the phenomenon of stopping up (Choke) and polluting.

Embodiment two:

Another preferred embodiment of the present utility model as shown in Figure 3, this figure is that the utility model second embodiment is in the profile at gas passage place.Wherein, present embodiment is provided with a plurality of auxiliary suction holes 7 ' in fixed die 1, and above-mentioned auxiliary suction hole 7 ' connects an asepwirator pump (not shown), and leads to mould; Present embodiment utilizes asepwirator pump that the high-temperature gas in the gas passage 5 is sucked in the above-mentioned auxiliary suction hole 7 ', and then discharges mould outer (direction as shown by arrows).Wherein, when high-temperature gas is flowed through gas passage 5, except can discharging via the port of export 6, see through above-mentioned auxiliary suction hole 7 ' simultaneously and can quicken the gas discharge, moderately lowered the throughput load in the gas passage 5 thus, just can avoid producing the situation of stopping up (Choke), improve exhaust efficiency simultaneously.

Especially, as shown in Figure 3, aforesaid a plurality of auxiliary suction holes 7 ' almost parallel ground is arranged, and is an acute angle Ф with gas channel 5 in one of the port of export 6 side; So, the air-flow in the gas passage 5 can more easily be inhaled in the above-mentioned auxiliary suction hole 7 ', to increase the effect of auxiliary exhaust.

Wherein, the preferable enforcement angle of above-mentioned acute angle Ф is 10 to 30 degree, and so, the air-flow in the gas passage 5 can be inhaled in the auxiliary suction hole 7 ' more swimmingly.By making the high-temperature gas in the gas passage 5 see through auxiliary suction hole 7 ' discharge, can moderately lower the throughput load in the gas passage 5, and can avoid producing the phenomenon of stopping up (Choke).

In sum, the utility model is by being provided with a plurality of assisted ventilations hole in fixed die, and connects gas passage, and wherein above-mentioned assisted ventilation hole can be as the auxiliary fumarole 7 among first embodiment, perhaps the auxiliary suction hole 7 ' among second embodiment; High-temperature gas via in the above-mentioned assisted ventilation hole discharge gas passage 5 can improve exhaust efficiency, and then reduce the generation of stopping up (Choke) phenomenon significantly, and can avoid mold fouling.

Claims

1. the CD die with assisted ventilation hole is characterized in that, comprising: a fixed die; But a dynamic model, but be relatively arranged on a side of this dynamic model, but this fixed die and should be limited with a die cavity between the dynamic model; One outside ring body is arranged on this mould in the mode around this die cavity; One assisted ventilation hole is arranged at a precalculated position of this fixed die; One port of export is to be formed at a side of this fixed die and this outside ring body in contrast to this die cavity direction; One gas passage between this fixed die and this outside ring body, connects this die cavity, this port of export and this assisted ventilation hole.

2. CD die as claimed in claim 1 is characterized in that, this fixed die also comprises a material feeding passage, is arranged at this fixed die inside, and connects this die cavity, in order to inject this injected plastics material.

3. CD die as claimed in claim 1 is characterized in that this fixed die also comprises a plurality of fumaroles, is arranged at this fixed die inside, and connects this die cavity.

4. CD die as claimed in claim 1 is characterized in that, this each assisted ventilation hole and this gas passage are an acute angle in a side of this die cavity.

5. CD die as claimed in claim 4 is characterized in that, this each assisted ventilation hole can spray into gas in this gas passage and communicate with this gas passage.

6. CD die as claimed in claim 4 is characterized in that, this acute angle is 10 to 30 degree.

7. CD die as claimed in claim 1 is characterized in that, this each assisted ventilation hole and this gas passage are an acute angle in a side of this port of export.

8. CD die as claimed in claim 7 is characterized in that, this each assisted ventilation hole leads to outside this mould, and the gas in this gas passage is by outside this each this mould of assisted ventilation hole sucking-off.

9. CD die as claimed in claim 7 is characterized in that, this acute angle is 10 to 30 degree.