CN2703635Y - Forming mould for CD substrate - Google Patents
Forming mould for CD substrate Download PDFInfo
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- CN2703635Y CN2703635Y CN 200420005470 CN200420005470U CN2703635Y CN 2703635 Y CN2703635 Y CN 2703635Y CN 200420005470 CN200420005470 CN 200420005470 CN 200420005470 U CN200420005470 U CN 200420005470U CN 2703635 Y CN2703635 Y CN 2703635Y
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Abstract
A molding die for an optical disk substrate, in which a hollow surface is formed directly or by a stamper, includes a mirror plate having a cooling data flow path, the cooling data flow path of the mirror plate having a plurality of flow paths adjacent to each other in the same direction to form a parallel flow field, and having a spiral shape. Therefore, the total contact area between the cooling data and the mirror plate and the total extension distance of the cooling data flow paths can be ensured, the cooling speed can be improved, and the lengths of the cooling data flow paths can be kept within a predetermined range. Therefore, the start end of the cooling data flow path controls the temperature difference of the cooling data, so that each part of the mirror panel can be uniformly cooled, the problem of the tilting of the formed optical disk substrate can be improved, and the cooling speed can be improved.
Description
Technical field
The utility model is relevant optic disc base board mould, specially refers to optic disc base board employed mould when being shaped that record materials such as CD-ROM, CD-R, DVD-ROM, DVD-RAM, DVD-R are used.
Prior art
At present, laser-optical disk uses the molding substrate mould, the fixed mould of being set up with and moveable die is respectively arranged with directly or be formed with the mirror board that hollow forms face by the impression note.Then on aforementioned mirror board, form cooling data stream to cool off the melting resin that is penetrated in being filled in.But when molding optical disc substrates, when using polycarbonate resin, its melting resin temperature that is penetrated filling rises to 390 ℃ of high temperature at 300 ℃, and is therefore for speeding the circulation that is shaped, rapidly essential to the action of cooling melting resin.In addition, in order to prevent the optic disc base board perk of formed thereby, each one of mirror board all must evenly cool off.
For satisfying above demand, in following invention document 1 to 6, be disclosed and recorded relevant content about the cooling data stream technology of optic disc base board mould.Wherein, in invention document 1 to 3 graphic, disclose and to cool off the swirl shape that the data stream forms 3 weeks or 5 weeks on the mirror board, guaranteeing to cool off total contact area that prolongs between distance and cooling data and mirror board of data stream, and then allow cooling effectiveness improve.But the object on the aforementioned invention document 1 to 3 is a cooling data stream forms swirl shape, and specially allow the contact area of cooling data and mirror board strengthen, when allowing gyrate cooling data stream increase on every side, cause a long problem of cooling data stream to take place.Because one cooling data stream is long, when the temperature of cooling data rises too soon in aforementioned cooling data stream way, cause the variations in temperature of mirror board on entrance hole side and the tap side, cause the optic disc base board perk problem of formed thereby to take place.
In addition, in order to solve the long problem of aforementioned cooling data stream, also on the books in invention document 4 to 6.Its content that is documented in the invention document 4 and 5 is divided into different systems for the cooling data stream with inner circle side and outer part side, and allows its circulation respectively in the cooling data.But these modes do not predict total contact area that prolongs distance and guarantee firmly to cool off data and mirror board of cooling data stream, the bar number that adds cooling data stream on the mirror board very little, therefore the efficient of cooling is also bad.In addition, when each laser direction supposed that per 1/4th works are distinguished, the part of entrance hole side can change with the temperature of the part of tap side the description of being put down in writing in the aforementioned invention document 4 and 5 to some extent to mirror board.In addition, the content of being put down in writing in aforementioned invention document 4 and 5 points out that more formed cooling data stream can produce other complicated problems generation in the mirror board material in addition.In addition, also point out in the invention document 6,, also have because of being difficult for to import the cooling data and discharge, and cause each position can't keep the problem of the same temperature though the cooling data stream in the tubulose is not provided with.In addition, each case points out that all the cooling velocity of temperature when high temperature of melting resin has problem in the relevant invention document 1 to 6.
Invention document 2. spies open flat 6-8250 communique (claim 1, Fig. 1, Fig. 4)
Invention document 3. spies open flat 9-155941 communique (claim 1, Fig. 1, Fig. 2, Fig. 3)
Invention document 6. spies open flat 8-187760 communique (claim 1 Fig. 1, Fig. 2)
The utility model content
The purpose of this utility model is to provide a kind of optic disc base board mould, guarantee to cool off the contact area of data and mirror board, when allowing cooling effectiveness rise, with the length restriction of cooling data stream under the fixed numeral, and the part temperature of part and tap side of avoiding cooling off the entrance hole side of data stream occurs in more than the numeral of cooling data defined, and each position of mirror board can both evenly be cooled off, take place with this problem that reaches the perk of control optic disc base board.
Another purpose of the present utility model is to provide a kind of optic disc base board mould, and for the good uniformity that allows impression remember when mold temperature improves, the rising with control cooling velocity prevents that the optic disc base board perk from taking place.
A purpose more of the present utility model is to provide a kind of optic disc base board mould, prevents to cause the problem of optic disc base board perk to take place because of some distortion of the caused mirror board of laser pressure.
The utility model is to adopt following technological means to realize,
A kind of mould of optic disc base board, directly or by marking press form the hollow face, comprise mirror board with cooling data stream, the cooling data stream of the mirror board of aforementioned formation, have in the adjacent plural stream of equidirectional mobile cooling data stream and constitute flow field arranged side by side, and be vortex shape.
The mould of aforesaid optic disc base board, cooling data stream at least all have near the bottom surface of the hollow side surface of mirror board and the side wall surface that contacts with aforementioned bottom surface, and the surface of minute surface version is 4mm to 6mm with the distance of the bottom surface of cooling data stream.
The mould of aforesaid optic disc base board, the plate thickness of mirror board are 18mm to 25mm.
The mould of aforesaid optic disc base board, mirror board are laser section direction, and to the flow direction direction that slightly meets at right angles of cooling data, the width of cooling data stream is 3mm to 4.3mm, are spaced apart 1.5mm to 3.0mm between cooling data stream.
Aforesaidly directly or by the impression note form the hollow face, and comprise mirror board with cooling data stream, formed cooling data stream on mirror board, with constitute side by side in the plural number cooling data stream of the equidirectional mobile cooling data stream adjacency of formation vortex shape, it is 40% to 55% at the ratio of the total basal area of the laser direction of cooling data stream formation that the basal area of aforementioned cooling data stream accounts for mirror board.
The body of aforesaid mirror board is made by stainless steel, and at least one part internal face of the cooling data stream of mirror board is that the material higher than stainless steel hot conductivity forms.
Aforesaid be installed on the fixed mould mirror board from internal perimembranous to the periphery the laser section of the portion direction of being reported to the leadship after accomplishing a task form three cooling data streams side by side, be installed in mirror board on the moveable die and the aforementioned mirror board that is installed on the fixed mould and cool off the data stream side by side and form cooling data stream side by side on the relative position a little, so be formed on not interior place the mirror board that is installed on the fixed mould cool off side by side the data stream relative in enclose cooling data stream.
Aforesaid be formed on moveable die in enclose cooling data stream, on the inner side in the cooling data stream that constitutes aforementioned cooling data stream arranged side by side, form the cooling data stream that a Monday, bar was extended approximately in the inboard.
The shaping mould prodigiosin of aforesaid optic disc base board forms the about 0.6mm of thickness, the optic disc base board of the about 12cm of diameter.
The utility model compared with prior art has remarkable advantages and beneficial effect.
Formation has the cooling data stream of the mirror board of hollow face, because of in the plural number cooling data stream of equidirectional mobile cooling data adjacency, constituting cooling data stream side by side, therefore total prolongations of the total contact area that can guarantee to cool off data and mirror board and cooling data stream apart under can allow in the cooling velocity lifting, the length that each can be cooled off the data stream be suppressed at decide under the scope.Therefore, the temperature difference of the starting end compacting cooling data of cooling data stream can allow each position of mirror board can reach even cooling, and then can control formed optic disc base board perk problem generation.
Particularly on the optic disc base board of diameter 12cm, form six on the direction of reporting to the leadship after accomplishing a task in the face of the direction of laser section in most position of aforementioned cooling data stream, each width that cools off the data stream is made as 3mm to 4.3mm, each cools off the bottom surface of data stream and the surface distance of mirror board is set in 4mm to 6mm, can the cooling of mirror board is more efficient, and formed optic disc base board cooling velocity upwards promotes.Especially after in the DVD molding optical disc substrates, in order to make the metastatic of impression note good and penetrate the filled high-temperature melting resin, the optic disc base board perk problem that can suppress formed thereby takes place, and also can promote its cooling velocity.
Description of drawings
Fig. 1 is the sectional drawing of mould of the optic disc base board of the utility model diameter 12cm.
Fig. 2 is the enforcement figure of the cooling data stream of display device panel on the fixed mould of mould of the utility model optic disc base board.
Fig. 3 be the utility model optic disc base board mould fixed mould on show the enforcement figure of cooling data flow path.
Fig. 4 be the utility model optic disc base board mould the mirror board of moveable die on show the enforcement figure of cooling data flow path.
Fig. 5 be the utility model optic disc base board mould moveable die on show the enforcement figure of cooling data flow path
Fig. 6 for the mould of optic disc base board of the present invention fixed mould and the sectional drawing of the mirror board of moveable die.
Embodiment
Specific embodiment please refer to Fig. 1 to Fig. 6 and illustrates, in Fig. 1, be the CD-ROM that the utility model carried out, CD-R, DVD-ROM, DVD-RAM, the diameter of DVD-R etc. are about 12cm (comprising contingent positive negative error in the moulding), and thickness is about the sectional drawing of the mould for optical disc substrate forming of 0.6mm.Fig. 2 is the presentation graphs that the cooling data of the mirror board on the fixed mould of the mould of aforementioned lights disc board when carrying out the utility model flow into.Fig. 3 is the key diagram that flows to that shows in the fixed mould of the mould of aforementioned lights disc board when carrying out the utility model that the cooling data flow into, Fig. 4 carries out the presentation graphs that the cooling data of the mirror board on the moveable die of the mould of aforementioned lights disc board when of the present invention flow into, Fig. 5 be the cooling data on the moveable die of the mould of aforementioned lights disc board when carrying out the utility model flow into flow to key diagram.Fig. 6 is the sectional drawing of the mirror board of the fixed mould of the mould of aforementioned lights disc board when carrying out the utility model and moveable die.
Fixed mould 1 on Fig. 1 location right, is installed on the fixed disk that is not presented at the Jet forming machine on the figure.In addition, the moveable die 2 of leftward position is installed on the movable plate that does not have on the figure to show among Fig. 1.Then fixed mould 1 and moveable die 2 by being installed on configuration relatively on fixed disk and the movable plate, by mobile movable plate, can contact and separate.The person's of connecing fixed mould 1 and moveable die 2 form hollow between two moulds when engaging.Follow aforementioned hollow partly, on the ejecting device that from figure, does not demonstrate, penetrate and fill melting resin and then form optic disc base board.
During from the relevant fixed mould 1 of Fig. 1 explanation, fixed mould 1 possesses the die ontology portion 3 that is installed on the fixed disk and the back metallic plate 4 on the installation mold body 3 is arranged.The front of metallic plate 4 then, mirror board 5 is installed in the die ontology portion 3 by the hole that screw 6 runs through back metallic plate 4.Back metallic plate 4 and mirror board 5 be respectively decide the drum material of plate thickness.Dispose central insulation sleeve pipe 7 and impression note insulating sleeve 8 on inner circle 4a, the 5a of aforesaid back metallic plate 4 and mirror board 5.In addition, the surperficial 5b of mirror board 5 (moveable die 2 sides) goes up the hollow face that constitutes a part of hollow.Then, the outer part 5c of mirror board 5 pushes between the part 21 in peripheral impression note described later, forms the chimeric surface that melting resin ends envelope.
Be formed with on the mirror board 5 in order to keep the cooling data stream 9 of mirror board 5 on institute's fixed temperature.9 of cooling data streams with entrance hole 4b that run through back metallic plate 4 and the cooling data stream 3a by being formed on die ontology portion 3 inside and be not presented at the fixed outer mould graphic on but have and regulate the feedway that cools off the data temperature and link together.Then, on the inside of mirror board 5 5d (fixed disk side), be provided with the concavity groove of plural number.Then, between mirror board 5 on the aforementioned concavity groove and back metallic plate 4, then can form cooling data stream 9 by mirror board 5 being fixed on the metallic plate 4 of back.Therefore, be formed on the side wall surface that cooling data stream 9 on the mirror board 5 at least all has the bottom surface 9a on the hollow side surface 5b that is placed in mirror board 5 and is contacted with aforementioned bottom surface 9a.In addition, cooling data stream 9 also can be formed at mirror board 5 inside.In addition, forming the method for cooling data stream 9, can be to carry out machining from the inside 5d of mirror board 5, also can be set up isolating part and is formed by other material.
Then, illustrate that with Fig. 2 and Fig. 3 the design of the cooling data stream 9 that forms mirror board 5 and the flow direction of cooling off data describe.The cooling data entrance hole 4b that forms back metallic plate 4 is formed on the relative position near mirror board 5 outer part 5c.On the inside 5d of mirror board 5 on aforementioned and the corresponding position of entrance hole 4b, the first beginning 10a of portion that cools off data stream 10 side by side that constitutes the importing effluent field of cooling data stream 9 then is formed.Then, 10 of aforementioned cooling data streams arranged side by side are by the aforementioned beginning 10a of portion top set, and by facing two cooling data stream 10b that connect, 10c constitutes.Then cool off data stream 10b, 10c forms in about parallel mode, and more than half parts forms swirl shape along the direction of circumference towards the inner circle of mirror board 5 5a side.Thus, first cools off the cooling data stream 10b of adjacency on the data stream 10 side by side, and 10c then flows by same direction with cooling number and forms.
In addition, near the outer part of back metallic plate 4, the rightabout position of holding centre bore with aforementioned entrance hole 4b under the arm is provided with the tap 4c that cools off data.On the corresponding position of aforementioned tap, on the outer inner circle 5a near mirror board 5, be formed with the second arranged side by side cooling data stream 11, be adjacent and approximately constituted with cooling data stream 11c with the set cooling data stream 11b of parallel mode.Then, aforementioned cooling data stream 11b, 11c then flow with the same direction of cooling data and form, and converging together at the position of terminal.In addition, aforementioned second side by side the part of 11 pluralities of cooling data stream form swirl shape along circumferencial direction from the interior perimembranous 5a limit of mirror board 5.
The design of the cooling data stream 9 of relevant mirror board 5, Fig. 2, Fig. 3 have further detailed description.At the first cooling data stream 10b arranged side by side that cools off side by side on the data stream 10,10c less than between the half-turn, is prolonging outer part 5c number first and second stream at first.Then, the first arranged side by side cooling data stream 10, less than half cycle then towards the inner circle 5a lateral bending song of the inner circle 5 of mirror board 5.Why first can be crooked if cooling off data stream 10 side by side, be because cool off data stream 11b, the reason that 11c is formed at the outer part 5c near mirror board 5 on the cooling data stream 11 side by side towards tap 4c formed second.Then, first cools off the cooling data stream 10b on the data stream 10 side by side, and the 3rd and the 4th stream that 10c is counted by the outer part 5c of mirror board 5 formed.Then, first side by side 10 of cooling data streams by the aforementioned second cooling data stream 11c inboard of cooling off side by side on the data stream 11.The first arranged side by side cooling data stream 10b on the cooling data stream 10 then, 10c then with aforementioned second side by side cooling data stream 11 compare the cooling data that formation is flowed from the entrance hole 4b in the opposite direction towards the cooling data that direction flowed of tap 4c.
The first arranged side by side cooling data stream 10b on the cooling data stream 10,10c once again towards inner circle 5a lateral bending song, become from 5 of the outer part 5c to the of mirror board 5 less than about half cycle the time, the stream the 6th (stream the 6th is in the there of inner circle 5c).Then, first side by side 10 of cooling data streams contact with the hole 10e that cools off data stream 10c with the hole 10d of the cooling data stream 10b that forms mirror board 5 inner circle 5a.Then aforementioned apertures 10d, 10e then are connected towards formed space 12 between mirror board 5 and the central insulation sleeve pipe, and 12 in space remembers that insulating sleeve 8 contacts with space 14 between the cutting machine 13 with impressing.Therefore, cool off data stream 10 temporary transient cooling data of discharging side by side by space 14 cooling press marking insulating sleeves 8 from first.Then, cool off data and return and form the cooling data stream 11b that the second hole 11d that cools off the cooling data stream 11b on the data stream 11 side by side on the discharge effluent road of mirror board 5 inner circle 5a reaches the mirror board that forms 5 from the hole 11e of cooling data stream 11c once again, among the 11c.Generally speaking, first side by side cooling data stream 10 and second cool off side by side that 11 of data streams are connected inner circle 5a or near the position of inner circle 5a.But first side by side cooling data stream 10 and second cool off side by side that data stream 11 is not connected to each other and be an autonomous system it, the first cooling data stream 10 arranged side by side and second cooling data stream 11 side by side imports the effluent road with partly treating as before it respectively, and is later half also passable as discharging the effluent road.
Then, the second arranged side by side cooling data stream 11b of adjacency on the cooling data stream 11,11c is made as it from 5 of the outer part 5c to the of mirror board 5, article 6, the stream 5c of portion lateral bending song to the periphery once again then during approximately less than half cycle, become from the 3rd of outer part 5c with the 4th stream.Then, the second arranged side by side cooling data stream 11b of adjacency on the cooling data stream 11,11c then are opposite direction convection current from aforementioned cooling data stream 10c of formation between the cooling data stream 10b of the cooling data stream 10 of the 2nd of outer part 5c and the 5th of outer part 5c and 10b on the cooling data stream 10 side by side mutually aforesaid first.Then, cooling data stream 11b, 11c then it is made as from the 3rd of outer part 5c with the 4th stream the 5c of portion lateral bending song to the periphery once again then during approximately less than half cycle, become from the 1st of outer part 5c with the 2nd stream.Then, the second arranged side by side cooling data stream 11b of adjacency on the cooling data stream 11,11c is then the same as described above, to go half cycle and confluxing at terminal part 11a again from the 1st of outer part 5c with the 2nd stream.In terminal part 11a, metallic plate 4 places form tap 4c in the back.Then, the cooling data are discharged the cooling data feedway that does not demonstrate once again through the cooling data stream 3b from the formed die ontology of aforementioned tap 4c portion 3 on figure.
Therefore, present embodiment import side first side by side cooling data stream 10 with as discharge the effluent road second side by side mutual the and inner circle 5a that is located at mirror board 5 of cooling data stream 11 between the outer part 5c.Except more than half parts of aforesaid bent part have formed 6 cooling data streams on the direction that the inner circle 5a to aforementioned mirror board 5 reports to the leadship after accomplishing a task to the laser section direction of outer part 5c direction.
In addition, in the present embodiment, though form the swirl shape that has bend as described above respectively about the first cooling data stream 10 arranged side by side and second cools off data stream 11 side by side, clear and definite bend is set will not changes inboard and outside passages, also can and form curve-like.Therefore, for expression " swirl shape " that the present invention a quoted language, also comprise the thing that refers to similar vortex.
In addition, present embodiment as shown in Figure 6, at the width D of the cooling data stream 9 of institute's cutting processing on the mirror board 5 (width on the laser section direction at mirror board 5 between the cooling data stream 9 of the flow direction of cooling data and slightly rectangular direction) formation 3.5mm.But we wish that and even the width D of cooling off data stream 9 is formed between the 3mm 4.3mm.In addition, the interval E (thickness of the cooling data stream partition portion of mirror board 5) that is all between the cooling data stream of adjacency then forms 2.5mm.But and even the interval E that we wish to be all between the cooling data stream of aforementioned adjacency is formed between the 1.5mm 3.0mm.
In addition, present embodiment as shown in Figure 6, the cooling data stream of the part between the outermost of mirror board 5 cooling data stream 10b and the cooling data stream 10 cooling data stream 11b and the interior cooling data stream 11c that encloses of outermost on the part of the opposition side of mirror board 5 (or for) form F upward thickness of slab G become 20mm, the hollow side surface 5b of mirror board 5 and the distance H of cooling off between the bottom surface 9a of data stream 9 then form 5.5mm.And even the distance H between aforementioned surfaces 5b and the aforementioned bottom surface 9a then wishes can be set between the 4mm 6mm.This is because afore-mentioned distance H too in short-term, produces unnecessary temperature simultaneously on aforementioned surfaces 5b, and the resin pressure during because of ejaculation can cause the part of the cooling flowing path 9 of mirror board 5 to produce distortion.These all can cause the optic disc base board perk of formed thereby or deformation reason to take place.In addition, the thickness of slab G of mirror board 5 then wishes not to be limited to 20mm, and even and between 18mm 25mm.Therefore, in the present embodiment, the cross-sectional area ratio that the cooling data stream that forms the cooling flowing path 9 of mirror board 5 forms when having only cooling data stream 9 on the total cross-sectional area of the laser section direction of F (cross-sectional area that comprises cooling data stream 9) then becomes 45.4%.And have only the cross-sectional area ratio when cooling off data stream 9 to wish to remain between 40% to 45% on the aforementioned total cross-sectional area of aforementioned cooling data stream formation F, to carry out good cooling work.
In addition, about carrying out the 9a aspect, bottom surface of the whole cooling data streams 9 in the state, the bottom surface 9a of cooling data stream 9 with the surperficial 5b (hollow face) of mirror board 5 though between distance H be identical, for example the cooling data stream 9 as inner circle 5a side contracts afore-mentioned distance H a little also passable a little.In addition, the bottom surface 9a that is all interval E between the cooling data stream 9, cooling data stream 9 of the width D of aforementioned cooling data stream 9, adjacency with the surperficial 5b (hollow face) of mirror board 5 though between the numerical value of distance H etc. all cool off data stream 9 more than half parts for being applicable to, even it is also passable to comprise the part of exception.
See also Fig. 1 relevant moveable die 2 is described.Have die ontology portion 15 that is installed on the movable plate and the backboard 16 that is installed on die ontology portion 15 on the moveable die 2.In the front of aforementioned backboard 16, mirror board 17 runs through the hole of backboard 16 and is installed in the die ontology portion 15 in bolt 18.Backboard 16 all is respectively the cylindric material of defined plate thickness with mirror board 17.And the inner circle 16a of backboard 16 and mirror board 17 is equipped with injector 19 among the 17a.The interior confined pressure marking of then pushing partly 21 in the periphery impression note that the hollow side surface 17b of mirror board 17 then fix on the outer part 17c side by the mirror board 17 of impression note 20, being fixed on the inner circle 17a side of mirror board 17 is pushed part 22 and is fixed.Therefore, the surperficial 17b of the mirror board 17 of moveable die 2 then forms the hollow face by impression note 20.In addition, we have illustrated impression note 20 examples that are installed on the moveable die 2 in the state that carries out, but are not limited thereto.
Then, the mirror board 17 of relevant moveable die 2 also form keep mirror board 17 the cooling data stream 23 of fixed temperature.And aforementioned cooling data stream 23 is being provided with on the mirror board 17 from the inside (movable plate side) bottom surface 23 on the hollow side surface 17b that connects Cut-meat-into-pieces mirror board 17 into and the groove with side wall surface 23g that aforementioned bottom surface 23e contacted, and is fixed in backboard 16 and formed by mirror board 17.Then, running through the entrance hole 16 that cools off data, connecting through the cooling data stream 15a that forms die ontology portion 15 on the feedway of the adjustment function that does not demonstrate in the drawings with cooling data in the inside of backboard 16.
See also Fig. 4, the cooling data stream 23 of the mirror board 17 that forms moveable die 2 is described.The cooling data stream 23 of the mirror board 17 of relevant moveable die 2, the same just like the cooling data stream on the mirror board 5 of fixed mould 19, the first cooling data stream 10 arranged side by side and second cooling data stream 11 does not side by side separate, from the inner circle 17a side 17c of portion side to the periphery, only form the first cooling data stream 23A side by side.
Describe cooling data stream 23A side by side below in detail, form the entrance hole 16b of cooling data near the 16a place, inner circle of backboard 16.Then, then forming the beginning 23a of portion of cooling data stream 23A arranged side by side with the approaching position of the inner circle 17a of the mirror board 17 of aforementioned entrance hole 16b correspondence position.From the aforementioned beginning 23a of portion, cooling data stream 23b, 23c then is set up towards terminal part 23d direction.Aforementioned cooling data stream 23b is formed at first towards interior surrounding edge, and then crooked back through less than 1 circle, is enclosed cooling data stream 23b1 along the inner circle 17a of mirror board 17 in the formation.Cooling data stream 23b is then once again towards peripheral side direction conversion 180 degree directions, and from open end side, remaining another unidirectional cooling data of cooling data stream 23c then form the cooling data stream 23A arranged side by side that is flowed.Therefore, enclose the cooling data stream 23b that cooling data stream 23b1 then constitutes on the cooling data stream 23A inner side arranged side by side in aforementioned and be extended, and then be the cooling data that rightabout flows with aforementioned cooling data stream 23b.In addition, relevant aforementioned cooling data stream 23b1 forms in the inside because of the cooling data stream 10,11 arranged side by side than fixed mould 1, thereby is not relative with aforementioned cooling data stream 10,11 arranged side by side.So by enclosing cooling data stream 23b1 in disposing, can promote optic disc base board in enclose the cooling effectiveness of side.
Cool off the 23b of data stream 23A side by side about aforementioned formation, 23c, in enclose cooling data stream 23A because be provided in interior enclosing, become therefore that initial inner circle 17a rises the 2nd with the 3rd stream.The cooling data stream 10,11 arranged side by side of cooling data stream 23A and fixed mould 1 is relative formation swirl shape side by side.Then, constitute the cooling data stream 23b of cooling data stream 23A side by side, 23c approximately less than 1 week the time, the 17c of portion lateral bending song to the periphery then, and then form from the 4th of inner circle 17a with the 5th stream, and roughly be parallel mode with aforementioned the 3rd cooling data stream 23c and form.Aforementioned the 4th the cooling data stream 23b with the 5th stream, 23c is approximately less than 1 week the time, the 17c of portion lateral bending song to the periphery once again then, and then form from the 6th of inner circle 17a with the 7th (outermost portion side) stream, and roughly be parallel mode with aforementioned the 5th cooling data stream 23c and form.Then on then being formed on terminal part 23d near the outer part 17c of mirror board 17, aforementioned the 6th cooling data stream 23b and aforementioned the 7th cooling data stream 23c conflux.Then, be provided with tap 16 with the backboard 16 of the 23d of aforementioned terminals portion opposite position, the cooling data are then discharged the adjustment function feedway with cooling data that does not show through the cooling data flow field 15b in the die ontology portion 15 in figure from aforementioned tap 16c.Therefore, the cooling data stream 23 of moveable die 2 forms 7 streams on the direction of reporting to the leadship after accomplishing a task in the face of mirror board 17 laser section directions in surpassing the part of half.
See also shown in Figure 6, the thickness of slab J that the cooling data stream of the part between the cooling data stream 23c1 of the outermost of mirror board 17 and the interior cooling data stream 23b1 that encloses forms I becomes 20mm, then forms 5.5mm apart from K between the hollow side surface 17b of mirror board 17 and the bottom surface 23e that cools off data stream 23.In addition, the L shaped 3.5mm that becomes of width of cooling data stream 23, the interval M of neighbour cooling data stream 23 (wall thickness that the cooling data stream of mirror board 17 is 23) then is formed on 2.5mm.Cross-sectional area ratio when therefore, having only cooling data stream 23 on the total cross-sectional area of the laser section direction of the cooling data stream formation I of the cooling data stream 23 of formation mirror board 17 (cross-sectional area that comprises cooling data stream 23) becomes 45.4%.
In addition, the bottom surface 23e's of the surperficial 17b of mirror board 17 and cooling data stream 23 wishes to be set in 4mm and even 6mm apart from K.The thickness of slab J of the cooling data flow field of mirror board 17 formation I is not limited to 20mm again, and wishes to be set in the degree of 18mm and even 25mm.In addition, the L shaped one-tenth of width of cooling data stream 23 is at 3.0mm and even 4.3mm, and the interval M (thickness of wall portion) of neighbour cooling data stream 23 then is formed on 2.5mm.Cross-sectional area ratio when having only cooling data stream 23 on the aforementioned total cross-sectional area of the aforementioned cooling data stream formation I of mirror board 17 then wishes to remain between 40% to 45%, to carry out good cooling work.
In addition, in this example,, cool off data stream 9,23 as the aforementioned, the design of the cooling data stream 9 of the mirror board 5 of fixed mould 1 is used on moveable die 2, also can though form on 17 at fixed mould 1 mirror board 5 with moveable die 2.In addition, enclose cooling data stream 23b1 on the cooling data stream 23 of the mirror board 17 of moveable die 2, also can being provided with.Then cool off data stream 9,23 and do not limit difference at entrance hole 4b, on the position of 16b, and difference also can in its vicinity.And slightly being the formed cooling data stream 10,11 arranged side by side of parastate, 23A does not limit only at the cooling data stream more than 3 that is made of adjacency.
In addition, in the present embodiment, though on the mirror board 5 of fixed mould 1, cooling data stream 10b from entrance hole 4b, 10c is difference to some extent, but first cools off the cooling data stream 10b on the data stream 10 side by side, and 10c supplies with also passable from the feedway of cooling data through other entrance hole with the identity of other system respectively.Same, second cools off the cooling data stream 11b on the data stream 11 side by side, and the 11c identity with other system respectively is also passable through the feedway that other tap returns the cooling data.And about the mirror board 17 of moveable die 2, though the cooling data stream 23b of the entrance hole 16b from, 23c is difference to some extent, but cooling data stream 23b, 23c is supplied with from the feedway of cooling data with the identity of other system respectively, and it is also passable to return feedway with the identity of different system.The water of cooling data in the mould of optic disc base board of the present invention for being transmitted with defined pressure through thermoregulator water, but also can be other data.
In addition, the main body of mirror board 5,17 is to be that stainless steel forms by comprising chromium (chrome) 13Cr, and present embodiment then uses SUS420J2.The pyroconductivity of aforementioned stainless steel (SUS420J2) is 24.9W/ ℃ of K (100 ℃), and is not high in the metal the inside.Therefore, internal face 9b, the 23f of at least one part that forms the cooling data stream 9,23 of mirror board 5,17 used than the higher material of aforementioned stainless steel (SUS420J2) pyroconductivity, promote by the heat conductivity of cooling data, and then also the cooling effectiveness of mirror board 5,17 can be promoted to mirror board 5,17.The high material of aforementioned stainless steel hot conductivity used in the present invention has metal or its alloys such as silver, copper, aluminium, inferior lead and nickel.Then, previous materials is affixed on cooling data flow field 9,23 internal face 9b, the 23f with hot pressing mode.
In addition, as shown in Figure 6, healing apart from K between the bottom surface 23e in the distance H between the bottom surface 9a of the surperficial 5b of mirror board 5 and cooling data stream 9 and the surperficial 17b of mirror board 17 and cooling data flow field 23 is short, then easy more surperficial 5b, the 17b of touching of the influence of then cooling off data.Therefore, having surperficial 5b, the 17b of part of the cooling data stream 9,23 of mirror board 5,17 then might be lower than the temperature of the surperficial 5b, the 17b that do not cool off data stream 9,23 parts.At this moment, only be formed at the bottom surface 9a of cooling data stream 9,23 by the material that the aforementioned hot conductibility is high, side wall surface 9c beyond the 23e, when 23g is last, does not cool off the cooling work of data stream 9,23 parts and then more carry out, mirror board 5,17 is evenly cooled off.In addition, also cooling data stream 9 and 9 s' inner wall part all can be used the high material of heat conductivity.This internal face 9b, 23f that will cool off data stream 9,23 is with the technology than the higher material of stainless heat conductivity of the body that constitutes mirror board 5,17, do not limit and be used in and have 2 cooling data streams set cooling data stream 10 arranged side by side side by side, 11, on the CD mould of 23A, on other the mould of optic disc base board, also can effectively use.In addition, on the optic disc base board mould of employed DVD on the present technique with the 120mm of substrate etc., the bar number that is the cooling data flow field of the direction of reporting to the leadship after accomplishing a task with the laser section direction of mirror board wishes preferably then to be at 6 or 7 at 5 to 8 on the viewpoint of cooling effectiveness.In addition, wishing in the distance on the surface of the bottom surface in aforementioned cooling data flow field and mirror board can be 4 to 9, and best then is at 4 to 6.
Next the employed forming method of mould of relevant optic disc base board of the present invention once is described.And even the temperature-averaging of aforementioned mirror board 5,17 is set in 115 degree C, 125 degree C, and the temperature of the melting resin when setting out then is set in 330 ℃ to 390 ℃, carries out the shaping of DVD-R with substrate 3.7 seconds circulation timei.At the DVD-R of DVD-R etc. with in the shaping of substrate, with CD with substrate relatively, the thickness of optic disc base board is 0.6mm and half, and transcription also is necessary to allow its lifting.Therefore, the temperature of melting resin that is penetrated filling also is necessary to be located at high temperature with this.But, the mould of optic disc base board in the past, the temperature of mirror board 5,17 is set in aforesaid temperature, and shortens circulation timei at 4.0 seconds to 3.7 seconds, so the optic disc base board of formed thereby can be towards the situation of tangent direction generation perk.At this point, the present invention is by the mould that uses the aforementioned lights disc board, the temperature of mirror board 5,17 in 120 degree C the time after, optic disc base board is 0.11 degree towards tangent direction generation perk, is in a ratio of a good numerical value with 0.3 degree of setting.In addition, originally carry out in the state,, also can use other thing in the shaping of bigger optic disc base board though the DVD-R of the about 0.6mm of thickness puts down in writing to some extent with the molding die of substrate about the about 12cm of diameter.
It should be noted that at last: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (9)
1. the mould of an optic disc base board, it is characterized in that: directly or by marking press form the hollow face, comprise mirror board with cooling data stream, the cooling data stream of the mirror board of aforementioned formation, have in the adjacent plural stream of equidirectional mobile cooling data stream and constitute flow field arranged side by side, and be vortex shape.
2. the mould of optic disc base board according to claim 1, it is characterized in that: cooling data stream at least all has near the bottom surface of the hollow side surface of mirror board and the side wall surface that contacts with aforementioned bottom surface, and the surface of minute surface version is 4mm to 6mm with the distance of the bottom surface of cooling data stream.
3. the mould of optic disc base board as claimed in claim 2, it is characterized in that: the plate thickness of mirror board is 18mm to 25mm.
4. the mould of optic disc base board as claimed in claim 1 or 2, it is characterized in that: mirror board is a laser section direction, and to the flow direction direction that slightly meets at right angles of cooling data, the width of cooling data stream is 3mm to 4.3mm, is spaced apart 1.5mm to 3.0mm between cooling data stream.
5. the mould of an optic disc base board, it is characterized in that: be directly or by the impression note to form the hollow face, and comprise mirror board with cooling data stream, formed cooling data stream on mirror board, with constitute side by side in the plural number cooling data stream of the equidirectional mobile cooling data stream adjacency of formation vortex shape, it is 40% to 55% at the ratio of the total basal area of the laser direction of cooling data stream formation that the basal area of aforementioned cooling data stream accounts for mirror board.
6. the mould of optic disc base board as claimed in claim 1, it is characterized in that: the body of mirror board is made by stainless steel, and at least one part internal face of the cooling data stream of aforementioned mirror board is that the material higher than stainless steel hot conductivity forms.
7. a kind of mould of optic disc base board according to claim 1 or 5, it is characterized in that: be installed on the fixed mould mirror board from internal perimembranous to the periphery the laser section of the portion direction of being reported to the leadship after accomplishing a task form three cooling data streams side by side, be installed in mirror board on the moveable die and the aforementioned mirror board that is installed on the fixed mould and cool off the data stream side by side and form cooling data stream side by side on the relative position a little, so be formed on not interior place the mirror board that is installed on the fixed mould cool off side by side the data stream relative in enclose cooling data stream.
8. the mould of optic disc base board as claimed in claim 7, it is characterized in that: be formed on moveable die in enclose cooling data stream, on the inner side in the cooling data stream that constitutes aforementioned cooling data stream arranged side by side, form the cooling data stream that a Monday, bar was extended approximately in the inboard.
9. the mould of optic disc base board as claimed in claim 1 is characterized in that: the about 0.6mm of shaping mould prodigiosin formation thickness of optic disc base board, the optic disc base board of the about 12cm of diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420005470 CN2703635Y (en) | 2004-03-08 | 2004-03-08 | Forming mould for CD substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420005470 CN2703635Y (en) | 2004-03-08 | 2004-03-08 | Forming mould for CD substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2703635Y true CN2703635Y (en) | 2005-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420005470 Expired - Fee Related CN2703635Y (en) | 2004-03-08 | 2004-03-08 | Forming mould for CD substrate |
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| CN (1) | CN2703635Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102371642A (en) * | 2010-08-16 | 2012-03-14 | 富士胶片株式会社 | Forming Device And Forming Method |
-
2004
- 2004-03-08 CN CN 200420005470 patent/CN2703635Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102371642A (en) * | 2010-08-16 | 2012-03-14 | 富士胶片株式会社 | Forming Device And Forming Method |
| CN102371642B (en) * | 2010-08-16 | 2015-09-30 | 富士胶片株式会社 | Building mortion and manufacturing process |
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Granted publication date: 20050608 Termination date: 20110308 |