CN101062827B - Method for manufacturing glass shaped object and manufacturing method of optical element - Google Patents
Method for manufacturing glass shaped object and manufacturing method of optical element Download PDFInfo
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- CN101062827B CN101062827B CN2007100872698A CN200710087269A CN101062827B CN 101062827 B CN101062827 B CN 101062827B CN 2007100872698 A CN2007100872698 A CN 2007100872698A CN 200710087269 A CN200710087269 A CN 200710087269A CN 101062827 B CN101062827 B CN 101062827B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention provides a manufacturing method of glass compact, which makes the manufacturing speed of glass compact speedup to increase the high-volume production capacity. In the said method, the fused glass is formed during colling to manufacture the glass compact. While separating one fused glass lump of the homogeneous quantity after another from the fused glass which flows out continuously, the cyclic use of two or more dice which synchronize and move is carried out, said fused glass lump is fabricated, and a glass compact is acquired, and then 1) applying a wind pressure to an acquired glass compact, blowing away from a die, and accommodating a blown-away glass compact into a fluid, or 2) applying a wind pressure to an acquired glass compact, blowing away from a die, and accommodating a blown-away glass compact using gully-shaped path with undercut part, in order to make the said glass compact move in the said undercut part at the same time be cooled, or 3) attracting and accommodating the acquired glass compact, or 4) applying a wind pressure to an acquired glass compact, blowing away from a die, and attracting and accommodating the acquired glass compact.
Description
Technical field
The present invention relates to make the method for glass shaping body continuously and the glass shaping body that obtains through this method is carried out the method that precision moulded formation is made optical element from melten glass.
Background technology
As the method for taking the optical element in time in processing such as guaranteeing mass production non-spherical lens on large-duty basis, known have a precision moulded formation method.This method is carried out high-precision processing to the forming face of model forming module, and will be called as glass material die forming under heating condition of performing member, thereby in the shape of molding glass integral body, critically is transferred to forming face on glass.
Above-mentioned performing member is to use the glass that meets the desired optical characteristics of optical element to make.The method of manufacture of performing member has: melten glass flowed in the mold form, and to the molding of gained cut, grinding, abrasive method; Isolate the fused glass block of the amount that is equivalent to a performing member from effusive melten glass, and the fused glass block of gained is configured as the method for performing member in the refrigerative process.The method in back has the advantage that can directly produce performing member from melten glass, and this method for example is disclosed in patent documentation 1.
Patent documentation 1: jp patent publication spy opens the 2003-40632 communique.
Summary of the invention
Although from the method for fused glass block direct forming performing member is the excellent method of mass production ability; But along with to be installed to the expansion of demand that lens on digital photographing apparatus or the portable phone etc. are master's optical element, require further to improve the mass production ability of performing member in recent years.
For this reason, preferably isolate fused glass block in succession, and shorten separation spacing to improve throughput from continuous effusive melten glass.Isolating in succession fused glass block is configured as glass shaping body successively through a plurality of shaping dies of round-robin; At this moment; Be configured in a plurality of shaping dies on the circumference of turntable with predetermined distance; And make this turntable alternately repeat the rotation of fixed angle and the calibration rotation that stops, thus a plurality of shaping dies synchronously being moved on definite stop place successively.
Melten glass is preferably in the moment that shaping dies stops to the supply of shaping dies and glass shaping body from the taking-up of shaping dies to carry out; But because the same moved further of shaping dies, so must carry out melten glass simultaneously to the taking-up of the supply of shaping dies and glass shaping body from shaping dies.
When the shaping dies that uses robot from turntable takes out glass shaping body; The effector of robot must next shaping dies be transported to before the extracting position during in operation below the completion; That is: (1) is near the glass shaping body on the shaping dies in the middle of stopping; (2) be held in body, molding was taken out in (3) before shaping dies begins to move, and (4) are transplanted on next operation with molding; (5) release is to the maintenance of molding, and (6) turn back to starting position for the taking-up of carrying out next time.
Yet; If further shorten the separation spacing of fused glass block in order to improve throughput; Then compare with the separation spacing of fused glass block; The running time of above-mentioned (1)～(6) that is used to take out molding is elongated relatively, thereby causes the operation of robot to be unable to catch up with the taking-up of next molding.So, the taking-up operation of glass shaping body becomes maximum speed limit (rule speed), thereby has limited the whole high speed of molding manufacturing process.
The present invention makes in order to address the above problem; Its purpose is; Thereby provide a kind of manufacturing speed that improves glass shaping body to improve the method for manufacture of the glass shaping body of mass production ability, and make the method for optical element by the glass shaping body that obtains through this method.
In order to address the above problem, the present inventor has found in the manufacturing process of glass shaping body through after the wholwe-hearted research; Thereby it is blown from shaping dies fly through the glass shaping body that obtains being applied blast; Implement specific processing to blowing the molding that flies then, perhaps attract and hold resulting glass shaping body, can shorten and take out the required time of glass shaping body; The contriver finds according to this, has finally accomplished the present invention.
That is, the invention provides following scheme:
(1) a kind of method of manufacture of glass shaping body is made glass shaping body through fused glass block is formed in the refrigerative process, it is characterized in that,
Isolate the fused glass block of equal in quality in succession from continuous effusive melten glass,
Recycle synchronization-moving a plurality of shaping dies said fused glass block formed, obtain glass shaping body,
Glass shaping body to obtaining applies blast, it is blown fly from shaping dies, and will blow the molding that flies and be received in the liquid method of manufacture of first glass shaping body of the present invention (below be referred to as).
(2) a kind of method of manufacture of glass shaping body is made glass shaping body through fused glass block is formed in the refrigerative process, it is characterized in that,
Isolate the fused glass block of equal in quality in succession from continuous effusive melten glass,
Recycle synchronization-moving a plurality of shaping dies said fused glass block formed, obtain glass shaping body,
Glass shaping body to obtaining applies blast; It is blown from shaping dies fly; And accept with the gutter shape path with recess and to blow the molding that flies, make this molding in said recess, move the cooling on one side method of manufacture of second glass shaping body of the present invention (below be referred to as) on one side.
(3) like the method for manufacture of the described glass shaping body of scheme (2), wherein, the said glass shaping body of refrigerative is received in the liquid with in the recess of said gutter shape path, moving on one side on one side.
(4) a kind of method of manufacture of glass shaping body is made glass shaping body through fused glass block is formed in the refrigerative process, it is characterized in that,
Isolate the fused glass block of equal in quality in succession from continuous effusive melten glass,
Recycle synchronization-moving a plurality of shaping dies said fused glass block formed, obtain glass shaping body,
Attraction is also held resulting glass shaping body.The method of manufacture of the 3rd glass shaping body of the present invention (below be referred to as).
(5) a kind of method of manufacture of glass shaping body is made glass shaping body through fused glass block is formed in the refrigerative process, it is characterized in that,
Isolate the fused glass block of equal in quality in succession from continuous effusive melten glass,
Recycle synchronization-moving a plurality of shaping dies said fused glass block formed, obtain glass shaping body,
Glass shaping body to obtaining applies blast, it is blown fly from shaping dies, attracts then and holds and blown the molding that flies.The method of manufacture of the 4th glass shaping body of the present invention (below be referred to as).
(6) a kind of method of manufacture of optical element is characterized in that, the glass shaping body through each described method manufacturing in the such scheme (1) to (5) is carried out precision moulded formation.
The invention effect
According to the present invention, thereby can provide the manufacturing speed high speed that makes glass shaping body to improve the method for manufacture of the glass shaping body of mass production ability, and use the glass shaping body that obtains through this method to make the method for optical element.
Description of drawings
Fig. 1 is the synoptic diagram of an example of the manufacturing installation of the glass shaping body that uses among the present invention;
Fig. 2 (a)～(c) is the synoptic diagram of an example of the shaping dies that uses among the present invention;
Fig. 3 is the synoptic diagram of an example of the method for manufacture of glass shaping body;
Fig. 4 is the synoptic diagram of an example of the removing method of glass shaping body;
Fig. 5 is the synoptic diagram of an example of the removing method of glass shaping body;
Fig. 6 is the synoptic diagram of an example of the removing method of glass shaping body;
Fig. 7 is the synoptic diagram of an example of the removing method of glass shaping body;
Fig. 8 is the synoptic diagram of an example of taking-up and the accommodating method of glass shaping body;
Fig. 9 is the synoptic diagram of an example of taking-up and the accommodating method of glass shaping body;
Figure 10 is the synoptic diagram of an example of taking-up and the accommodating method of glass shaping body;
Figure 11 is the synoptic diagram of an example of taking-up and the accommodating method of glass shaping body;
Figure 12 (a)～(c) is the synoptic diagram of an example of the method for manufacture of glass shaping body;
Figure 13 is the synoptic diagram of the platinum alloy system nozzle that uses in an embodiment of the present invention.
Label declaration
1 turntable
2 shaping dies
3 glass shaping bodies
4 gas injection apparatus
5 attract ozzle
6 liquid
7 recess
8 gutter shape paths
9 containers
10 suction devices
11 attract mouth
12 conduit spouts
Embodiment
In the method for manufacture of first to fourth glass shaping body of the present invention, the operation that fused glass block is configured as after the glass shaping body is inequality, but the operation that fused glass block is configured as till the glass shaping body is identical.Therefore, at first common in the method for manufacture of the present invention's first to fourth glass shaping body is partly described.
The method of manufacture of first to fourth glass shaping body of the present invention is that fused glass block is formed the method for making glass shaping body in the refrigerative process; Isolate the fused glass block of equal in quality in succession from continuous effusive melten glass; And recycle synchronization-moving a plurality of shaping dies said fused glass block is formed, obtain glass shaping body.
At first, the frit that will concoct in order to obtain the target glass component imports in the melt container and heats, melts, and clarifies, obtains melten glass after the homogenize.Then, do not derive melten glass and it is flowed out from the conduit spout continuously with the constant flow from the conduit that is installed on the melt container under the temperature of devitrification at glass.In order to obtain the glass shaping body of constant mass; Preferably circulating current heats to produce joule heating in platinum that constitutes conduit or platinum alloy; Perhaps conduit is heated through induction heating method; Perhaps the outside surface of conduit is heated and control its temperature etc., thereby be maintained the melten glass discharge of time per unit constant.
The device that disposes synchronization-moving a plurality of shaping dies is set below conduit.The typical example of this device turntable of can giving an example out below describes under the prerequisite of using turntable.
As shown in Figure 1, what each shaping dies 2 was configured in turntable 1 equally spacedly is on the circumference at center with the turning axle, through calibration revolving-turret 1, each shaping dies 2 synchronously is transplanted on the corresponding stop place successively.In turntable shown in Figure 11, disposed 24 shaping dies 2 altogether, and they have been recycled.
With a location assignment in the above-mentioned stop place is casting position, and the top of the shaping dies 2 that the conduit spout is positioned at rest on the casting position.
As supplying an example of the method for fused glass blocks to shaping dies 2; The following method of can giving an example out: the shaping dies 2 that is positioned at conduit spout below is risen and near the conduit spout; Supporting is from the lower end of the effusive fused glass block of this spout; Above-mentioned shaping dies is descended rapidly come fractional melting glass, thus fused glass block is fed in the shaping dies.This method preferably is in the stop process at shaping dies carries out.Through this method, the fused glass block quality that can obtain than drip naturally from the conduit spout is big (for example, about 300～1500mg) more, and the also bigger fused glass block of size.In order to improve the quality precision of glass shaping body, preferably before beginning mass production glass shaping body 3, the conduit spout during with lifting shaping dies 2 becomes all to equate with the distance adjustment between each shaping dies 2.In above-mentioned example, shaping dies 2 is used as self accepts parts, but also can use the parts of accepting of other setting to come the fractional melting glass block, and then it is supplied to shaping dies.
In addition; The melten glass of sening as an envoy to of can also giving an example drips down naturally to shaping dies 2 from the conduit spout and obtains the method for fused glass block, and the fused glass block that obtains with this method is formed and the glass shaping body 3 that obtains has and is suitable for blowing from shaping dies 2 size (for example about 50～500mg) that flies (perhaps attracting).Because the weight of the fused glass block that drips naturally and the diameter of conduit spout are proportional, thereby select to flow out bore matchingly with the weight of gained molding.Naturally the melten glass that drips both can directly drip on the shaping dies, also can be earlier with accept parts etc. and be fed to again in the shaping dies 2 after contacting.In addition, can also be before cut off separating from molten glass flow with accepting parts temporary support glass flows, and then drip.
So, at the casting position of turntable 1 fused glass block is fed in the shaping dies 2, the shaping dies 2 that is supplied fused glass block is moved away from casting position through the rotation of turntable, and the shaping dies 2 of dummy status is moved into casting position.The shaping dies 2 that loads fused glass block repeats to move, stop on one side, on one side fused glass block is configured as glass shaping body 3.
The method that obtains glass shaping body 3 from fused glass block first to the 3rd following moulding method of for example can giving an example out.
First moulding method be from the shaping dies sparging gases applying blast upwards to glass block, thereby while the method that makes glass block on shaping dies, float and be shaped, in the method, the surface of gained glass shaping body is a free surface.
Second moulding method also from shaping dies recess sparging gases to apply blast upwards to glass block; But in the method; The recess shape of shaping dies 2 is made as approximate turbination, and (horizontal section of this expression shaping dies recess is for circular; And be the above-mentioned circular diameter shape of (towards the gas injection direction) increase from bottom to top, preferably that kind is the above-mentioned circular diameter increment rate approximate horn shape of (towards the gas injection direction) increase from bottom to top shown in Fig. 2 (a)).The ejiction opening of above-mentioned gas is arranged on the bottom of above-mentioned approximate obconic recess.In the method, when glass block descends towards recess below, can receive high wind upwards and press and rise, when glass block rose, meeting was owing to above-mentioned blast reduces to descend, and like this, glass block repeats to move up and down in recess.Glass block moves up and down through this and rotation randomly, is configured as spheric glass shaping body 3.
The divergence angle θ of this turbination recess is preferably about 45～15 °, if in this angular range, then the recess shape also can be the above-mentioned circular diameter increment rate shape of (towards the gas injection direction) minimizing from bottom to top shown in Fig. 2 (b).In addition, shown in Fig. 2 (c), the recess shape also can be near the shape that gas vent, is round slowly.On the other hand, fly so that it is blown, preferably shown in Fig. 2 (a)～(c), give the last chamfer of turbination recess, and mirror ultrafinish is carried out on this chamfered section surface in order easily to apply blast to glass shaping body 3.The recess upper end has the edge if this is, then spheric glass shaping body and this edge bump, thus the cause that is easy to damage.In addition, in order to make the removing direction of glass shaping body 3 stable, can form guide in the upper end of turbination recess.The gas flow of supply selects to make fused glass block with the flow of the state high speed rotating of come-up roughly in shaping dies 2, but the stage from finishing to be shaped, and the gas flow that selection can promote the cooling of glass and can keep the come-up state gets final product.
The 3rd moulding method is the method for the fused glass block on the shaping dies being carried out die forming in the relative mould relative with this shaping dies.
After forming, preferably be cooled to not the degree of can the strength owing to taking out being out of shape, and from shaping dies, take out glass shaping body as target in this stage through above-mentioned first to the 3rd moulding method etc.
Then, the method for manufacture to each glass shaping body describes.
The characteristics of the method for manufacture of first glass shaping body are, the glass shaping body of gained is applied blast fly so that it is blown from shaping dies, and will blow the molding that flies and be received in the liquid.
The method of manufacture of first glass shaping body is described below in conjunction with accompanying drawing.
Fig. 3 shows the glass shaping body 3 that uses second moulding method to make from fused glass block.Spheric glass shaping body 3 before taking out is owing to the air-flow that sprays from the bottom of shaping dies 2 is in levitated state.Thereby, as shown in Figure 4, if make the air-flow that sprays from gas injection apparatus 4 slip into the downside of glass shaping body 3, then can glass shaping body 3 be blown from shaping dies 2 and fly.At this moment, finely tune through direction and intensity to the air-flow that sprays from gas injection apparatus 4, can make spheric glass shaping body 3 with the direction of expection with apart from landing.
In addition; As shown in Figure 5; Above shaping dies 2, if from gas injection apparatus 4 the bigger airflow of flow velocity is arranged, then the top of spheric glass shaping body 3 can become negative pressure; Spheric glass shaping body 3 will fly out to the top, flies thereby can the spheric glass shaping body 3 that fly out be blown to the direction of the air-flow that sprays from gas injection apparatus 4.
So; Even if under the situation of the separation spacing that further shortens fused glass block, raising throughput; Through from shaping dies, blowing the glass shaping body that flies gained; The taking-up operation of glass shaping body can not become maximum speed limit yet, thereby can be embodied as the whole high speed of manufacturing process of body.In addition, owing to be to blow with non-contacting means to fly molding, thereby fly molding, can prevent promptly that when taking out molding the dust in the operating environment etc. is adhered on the glass surface as long as use clean gas to blow.
As shown in Figure 8, blow the glass shaping body 3 that flies and be received in the liquid 6 through applying blast.The liquid 6 that holds glass shaping body 3 can use liquefied gas such as lower boiling liquid such as pure water, ethanol, ether or liquid nitrogen etc.
Through glass shaping body is dropped in the liquid, can not have the ground of impact and hold glass shaping body, in addition, can promote the cooling of glass shaping body, but also can prevent owing to contact the situation of polluting glass shaping body with returnable.
When making the spheric glass shaping body, it is also conceivable that fused glass block is directly dropped in the liquid, thereby make its spheroidization, and carry out the refrigerative method through the surface tension of glass.But; When going for the high glass shaping body of degree of sphericity through this method; Can only obtain the glass shaping body of low capacity, in addition, if the viscosity of melten glass is low excessively; Then fused glass block can be out of shape in the impact owing to falling into liquid, thus the degree of sphericity variation of the glass shaping body of gained.In addition, according to the volume of fused glass block, temperature, class of liquids, the difference of fluid temperature of glass when falling into liquid, glass block breaks because of the thermal shock when falling into liquid sometimes.
The method of manufacture of first glass shaping body according to the present invention owing to behind shaping fused glass block on the shaping dies, it is taken out, thereby only can also obtain can't be more than the 100mg of spheroidization with surface tension the spherical glass molding.In addition, the glass shaping body that carries out spheroidization with shaping dies takes out after being cooled to below the softening temperature on the shaping dies at least again, thereby the impact of the degree of sphericity that can prevent glass shaping body owing to falling liquid descends.In addition, if fully cool off and reduce the temperature of glass when taking out, do not worry that also the thermal shock of glass shaping body owing to falling into liquid break.But,, forming efficiency (separation spacing of fused glass block is contracted to the most in short-term) when being increased to the limit, just be difficult to reduce the temperature of glass shaping body.In this case, the liquid that drops into glass shaping body preferably uses lower boiling liquid such as ethanol, be heated to liquid or ebullient liquid near the boiling point.When using such liquid, the liquid around the glass shaping body seethes with excitement because of the heat of glass, thereby glass shaping body is surrounded by gas phase when falling into liquid, therefore can alleviate thermal shock.But, if the temperature of glass shaping body that can be when falling into liquid is fallen enough lowly, even so wieldy pure water or ether etc. also can prevent to be broken by what thermal shock caused.In addition therefore as shown in Figure 8 because the gas phase around liquid or the glass shaping body constitutes buffering, even if glass shaping body contact with each other or the situation of colliding under, the possibility that on glass shaping body, stays scar is also low.
Then, the method for manufacture to second glass shaping body describes.
The characteristics of the method for manufacture of second glass shaping body are; The glass shaping body of gained is applied blast to fly so that it is blown from shaping dies; And accept with the gutter shape path with recess and to blow the molding that flies, while being moved in said recess, it cools off.
In the method for manufacture of second glass shaping body, it is identical with the content of in the explanation of the method for manufacture of above-mentioned first glass shaping body, describing it is blown the method that flies from shaping dies that glass shaping body is applied blast.
, the forming efficiency of glass shaping body (separation spacing of fused glass block is contracted to the most in short-term) when being brought up to the limit; Because shorten the cooling time of glass; The temperature of glass shaping body rises a little during taking-up, thereby the dust in the environment becomes and is sintered to easily on the molding surface.In addition, the temperature of glass shaping body is high more, and easier generation causes the disruptive problem by thermal shock.In addition, owing to blow the glass shaping body high-speed flight that flies through applying blast, so, if directly reclaim, then collide with returnable or the previous glass shaping body that takes out sometimes, thereby can on the surface of glass shaping body, stay scar.
In order to address the above problem, as shown in Figure 9 in the method for manufacture of the present invention's second glass shaping body, accept through blast with the gutter shape path 8 with recess 7 and to blow the glass shaping body 3 that flies, while and it is moved cool off in said recess.
The recess 7 of gutter shape path is U font or V font at preferred its cross-sectional shape when the length direction of gutter shape path is watched.In addition, gutter shape path also can have the top as required, and can be provided with tubular passageway through gutter shape path and top this moment.
Gutter shape path with recess is through having above-mentioned shape, even if glass shaping body destination location what are inaccurate, the travel direction of glass shaping body and translational speed are stablized.In addition, path can need not to be collinear, through it being made as curve or spiral-shaped, can prolonging miles of relative movement and reduce translational speed effectively, thereby can further promote the cooling of glass.
When glass shaping body 3 moves in the recess 7 of gutter shape path, may be sintered on the spheric glass shaping body 3 attached to the lip-deep dust of recess.Therefore,, perhaps make the surface ejection of gas, form air cushion from the recess 7 of gutter shape path preferably to the clean gas of recess 7 jet surfaces of gutter shape path.In addition, the surface of the recess 7 of gutter shape path preferably makes with soft material such as heat-resistant resin or graphite, prevents the sintering or the breakage of glass shaping body 3.
In addition, preferred increase the temperature that the gas flow that makes the glass shaping body come-up that flows to shaping dies fully reduces glass, perhaps in advance container is heated, glass slight crack occurs because of thermal shock when preventing to contact with container.But when the gained glass shaping body was the spherical glass molding below the 20mg, because speed of cooling is fast, anti-in thermal shock, thereby glass slight crack can occur hardly.
Shown in figure 10, preferably will in the recess 7 of gutter shape path 8, moving on one side on one side, the refrigerative glass shaping body be received in the liquid 6 in the container 9.
Through glass shaping body is dropped in the liquid, can not have the ground of impact and hold glass shaping body, in addition, can promote the cooling of glass shaping body, but also can prevent owing to contact the situation of polluting glass shaping body with returnable.
As stated; In the method that glass shaping body 3 is not just dropped in the liquid 6 through gutter shape path 8; If forming effect is increased to the limit (separation spacing of fused glass block is contracted to the shortest); Then the cooling time on shaping dies 2 abundant inadequately, thereby in dropping into liquid 6 time sometimes because thermal shock and on glass shaping body 3, slight crack occurs.
But; In the method for manufacture of second glass shaping body of the present invention; Because the glass shaping body 3 that from shaping dies, takes out is cooled off while moving in the recess of gutter shape path 8; Thereby the temperature of glass shaping body 3 can reduce through contacting with gutter shape path 8, and can be prolonged the time that it moves in gutter shape path 8 cooling time of glass shaping body 3.Therefore, needn't take special countermeasure, adopt specific liquid etc., just can hold glass shaping body 3 such as liquid 6.
Liquid 6 can use liquefied gas such as low-boiling point liquids such as pure water, ethanol, ether or liquid nitrogen etc.
Then, the method for manufacture to the 3rd glass shaping body describes.
The characteristics of the method for manufacture of the 3rd glass shaping body are, attract and hold the gained glass shaping body.
Shown in figure 11; Can glass shaping body 3 be attracted to inner suction device 10 and have suction tube 13; With being arranged on the top that attraction mouth 11 on this Guan Yiduan is arranged on shaping dies 2; Produce negative pressure through the inside that makes suction tube 13 and attract the glass shaping body 3 on the shaping dies 2, and discharge the glass shaping body 3 that is attracted from the other end of suction tube 13.If container 9 etc. is set below the outlet end of glass shaping body 3, then can easily holds glass shaping body 3.
In example shown in Figure 11; Relievers such as vacuum generator are connected to the peristome that is arranged at container 9 tops; Through the inside generation negative pressure that makes container 9 and be connected the suction tube 13 on the container 9; Can attract the spheric glass shaping body 3 on the shaping dies 2, glass shaping body 3 is discharged in the container 9 through suction tube 13 successively, can hold this glass shaping body 3 thus.At this moment; Consider the volume of container 9 etc.; The preferred internal diameter of suction tube 13 and the ratio of the internal diameter that reliever is connected to the pipe on the container 9 regulated; Or regulate suction tube 13 in the installation site on the container 9 and the distance of reliever between the installation site on the container 9, and or between container 9 and above-mentioned reliever, netted thin slice etc. is set, prevent to be contained in the interior glass shaping body 3 of container 9 thus to reliever one side shifting.
Aforesaid method is not owing to use the mechanism that carries out high speed operation, even thereby under the very short situation of the separation spacing of fused glass block, also can when extracting position moves, glass shaping body 3 be taken out at shaping dies 2.
When attracting glass shaping body,, make glass shaping body injured sometimes owing to collide with container that holds or the glass shaping body that has been contained in the container.Thereby, preferably in container, use by heat-resistant resin or the soft material of graphite geometric ratio glass, perhaps from container with the contacted surface ejection of glass shaping body gas, form air cushion.In addition, preferably with glass shaping body destination location with land after accommodated position separate so that glass shaping body be not trapped in container on the destination location.For example, if between destination location and accommodated position, form the slope of releiving, the spheric glass shaping body is rolled from destination location move to accommodated position.
On the other hand, when the temperature of glass shaping body was higher when taking out, glass slight crack occurred because of thermal shock sometimes when contacting with container.Therefore, preferred increase flows to the temperature of the gas flow that makes the glass shaping body come-up of shaping dies with abundant reduction glass, perhaps in advance container is heated.But when the gained glass shaping body was the spherical glass molding below the 20mg, because speed of cooling is fast, anti-in thermal shock, thereby glass slight crack can occur hardly.
Can the glass shaping body that attract be contained in the liquid, at this moment, as long as the glass shaping body that attracts is received in the container of full of liquid in advance.As the liquid that is used to hold glass shaping body, can use liquefied gas such as low-boiling point liquids such as pure water, ethanol, ether or liquid nitrogen.
Through the molding that attracts is dropped in the liquid, can not have the ground of impact and hold glass shaping body, in addition, can promote the cooling of glass shaping body, but also can prevent owing to contact the situation of polluting glass shaping body with container.
Then, the method for manufacture to the 4th glass shaping body describes.
The characteristics of the method for manufacture of the 4th glass shaping body are, the glass shaping body of gained is applied blast fly so that it is blown from shaping dies, and attract to be blown the glass shaping body that flies, and it is held.
Shown in Figure 12 (a), 12 (b), in the method for manufacture of the 4th glass shaping body,,, and on shaping dies 2, apply blast to shaping dies 2 supply fused glass blocks preferably from pipe spout 12 melten glass that drips, while being floated, fused glass block is shaped.The small-sized glass block that obtains dripping melten glass form and glass shaping body 3 owing to can easily from shaping dies 2, blow and fly through applying blast, so can take out at short notice, do not contact with glass shaping body.Then, if attract and hold blow the glass shaping body 3 that flies, then can under the situation that does not injure glass shaping body, reclaim efficiently.
Shown in Figure 12 (b), 12 (c); Being used to blow the gas that flies preferably sprays from gas injection apparatus 4; And preferred inwall injection, thereby along blowing the glass shaping body 2 that flies in the recess with the relative inwall of inwall that sprays said gas along shaping dies 2 recess.Preferably blowing pre-configured suction device 10 on the position that flies glass shaping body 3 with attraction mouth 11; And preferably make the inside of suction device 10 produce negative pressure; Be attracted in the attraction mouth 11 blowing the glass shaping body 3 that flies through near the negative pressure the attraction mouth 11, and inner being received in the container 9 of pipe through being connected with attraction mouth 11.In order not injure glass shaping body 3, said pipe or container 9 are preferably processed with the softish material.
At first, second, in the method for manufacture of the 4th glass shaping body; Be used to blow the gas that flies glass shaping body and can use nitrogen or air etc.; The preferred limpid gas of drying that uses; In addition, blow gas flow when flying and can consider that the quality of glass shaping body waits suitably and confirm, be preferably about 10～50L/ branch (rise/minute).
In the method for manufacture of first to fourth glass shaping body, gas injection apparatus 4 or suction device 10 can be distinguished and only use 1, also can use many.Through using many, can further shorten the take-off time of glass shaping body.
The glass shaping body that method of manufacture through the present invention's first to fourth glass shaping body obtains can give an example out the glass material that is used to heat the back die forming, be preform for press forming.
Then, the method for manufacture to optical element of the present invention describes.
The characteristics of the method for manufacture of optical element of the present invention are, the glass shaping body of making through the method for manufacture of the invention described above first to fourth glass shaping body is carried out precision moulded formation.
The shape of the glass shaping body that uses is preferably confirmed according to the shape of objective optics element.For example, when to be shaped as lens have the optical element of rotational symmetry the time, also be preferably sphere or have the shape of rotational symmetry as the shape of the glass shaping body of performing member.
To as the above-mentioned glass shaping body that obtains carry out precision moulded formation and make optical element, but precision moulded formation method, the model forming module that in precision moulded formation, uses, device can be used known method, mould and device.In addition, create conditions kind, the shape of optical element, the size that also can consider glass such as molding condition waits suitably and regulates.
As the optical element that obtains, the glass component of the formation of can giving an example out optical instrument, optical elements such as lens, speculum, grating, prism, microlens, stacked diffraction optical element for example, the lens of preferably can giving an example out.
(embodiment)
First embodiment (making the example of glass shaping body through the method for manufacture of first glass shaping body)
With specific refractory power behind the cooling curing (nd) be 1.806, Abbe number (vd) is that 40.7 the glass block as boric acid lanthanum class opticglass is put in the platinum alloy crucible that is heated to 1000 ℃ and fused; In 1300 ℃ of clarifications down, stirring, obtain 1050 ℃ uniform glass melt then.
Then, is being connected with above-mentioned platinum alloy crucible bottom and temperature is controlled in the top installation platinum alloy system nozzle shown in figure 13 of 1000 ℃ platinum system outlet pipe, this its external diameter of platinum alloy system nozzle is 1.0mm, and has the structure of the nitrogen gas stream of making to the top periphery.Then, flow out melten glass after mass flowing nozzle partly is heated to 990 ℃, and regulate the nitrogen flow that flows to nozzle tip, with the drip melten glass of 28mg of 0.5 second interval, obtain fused glass block thus.
On the other hand, as shown in Figure 1, near configuration 24 the shaping dies 2 altogether equably circumference of the turntable 1 of circle.Shown in Fig. 2 (a), on shaping dies 2, be formed with approximate flaring turbination recess (θ=35 °), the flow ejection nitrogen that divides with 1.2L/ from the hole that is arranged at this recess center bottom.Make this shaping dies 2 move to above-mentioned mass flowing nozzle under and fused glass block dripped insert in the tubaeform recess, calibration revolving-turret 1 immediately inserts fused glass block in succession with 0.5 second interval in shaping dies 2 then.Fused glass block in the shaping dies 2 keeps the roughly state and the high speed rotating of come-up through ejection gas, thereby is configured as spheric glass shaping body 3.Air-cooled for glass shaping body 3 is carried out, begin to spray nitrogen with the flow that 10L/ divides from the stage that spheroidization roughly finishes from the top of shaping dies 2.And will increase to the 3.0L/ branch from the effusive nitrogen flow in recess bottom of shaping dies 2 simultaneously, promote the cooling of spheric glass shaping body 3.
As shown in Figure 1, will be from the position after on position (casting position) calibration of the fused glass block rotation 21 times the extracting position as glass shaping body.On the other hand, as shown in Figure 8, blown the container 9 that has disposed full of liquid 6 on the position that flies at glass shaping body 3.
As shown in Figure 8; The extracting position of the glass shaping body on turntable; Shaping dies 2 one arrives; The flow jet compression air-flows that just divide with 15L/ to approximate flaring recess continuously from the gas injection apparatus that is arranged on glass forming die 2 oblique uppers 4 fly thereby spheric glass shaping body 3 blown.Blown in the container 9 that the glass shaping body 3 that flies fell into and be accommodated in full of liquid 6.
As stated, through carrying out the taking-up of glass shaping body, and, produced the spherical glass molding of about 70000 28mg through 10 hours continuous operation with 0.5 second interval.After continuous operation finishes, from liquid, pick up the spheric glass shaping body and carry out drying, carry out quality inspection.With the liquid in the container 96 be replaced by ethanol, hydrogen fluorine ether, the pure water and the liquid nitrogen that are heated to more than 50 ℃ to have obtained respectively glass shaping body 3, the result has obtained to have no qualitatively the spherical glass molding of problem.
As the glass shaping body 3 that obtains in the present embodiment, because the glass shaping body thermal capacity below the 30mg is little, so the speed of cooling in shaping dies 2 enlarges markedly.Thereby it is air-cooled fully through in shaping dies, carrying out; The temperature of glass shaping body can be reduced to below 60 ℃ reliably during taking-up; Therefore, the cooling that need not adopt that also the second embodiment that kind described as follows is rolled etc. in gutter shape path promotes means.
Second embodiment (making the example of glass shaping body through the method for manufacture of second glass shaping body)
Unload the platinum alloy system nozzle of first embodiment; And to replace external diameter φ be that the platinum alloy system nozzle of 3.7mm is installed to and is connected with the platinum alloy crucible bottom and temperature is controlled as the top of 1000 ℃ platinum system outlet pipe, then with the drip fused glass block of 300mg of 0.5 second interval.
In shaping dies, above-mentioned fused glass block is carried out spheroidization through the method identical in succession with first embodiment.Shown in figure 10, blowing the position that flies glass shaping body 3, in advance tilted configuration gutter shape path 8, this gutter shape path 8 has the recess 7 that the cross section is in the shape of the letter V.The recess surface of gutter shape path 8 forms with heat-resistant resin, is used for that above-mentioned glass shaping body is blown the compressed air stream that flies and is the state that always on path, sprays.In addition, shown in figure 10, below the outlet of the glass shaping body of gutter shape path 8, disposed and be full of alcoholic acid container 9.Do not rise with the controlled liq temperature with coolings such as water coolers in the bottom of container 9.
Shown in figure 10; Extracting position at glass shaping body; Shaping dies 2 one arrives, just from the gas injection apparatus 4 that is arranged on glass forming die 2 oblique uppers towards the flow continuous injection compressed air stream of approximate flaring recess with the 15L/ branch, fly thereby spheric glass shaping body 3 blown.Blown the glass shaping body 3 that flies and dropped on the gutter shape path 8, slowly rolled, fall into then and be received into and be full of in the alcoholic acid container 9 in the path inside that tilts.
As stated, through carrying out the taking-up of glass shaping body, and, produced the spherical glass molding of about 70000 300mg through 10 hours continuous operation with 0.5 second interval.After continuous operation finishes, from ethanol, pick up the spheric glass shaping body and carry out drying, and carried out quality inspection.Consequently, the none glass shaping body breaks, and does not also find injurious surface mark or the defective of adhering to foreign matter.
In addition; Except the liquid in the container 9 being changed to liquid nitrogen or lower boiling hydrogen fluorine ether (boiling point is 76 ℃); Through having made glass shaping body with above-mentioned same method, this moment is the same with ethanol can produce the spherical glass molding that has no problem.But, when using liquid nitrogen,, after spheric forming of glass body and function ethanol is cleaned, carried out drying owing on the surface of glass shaping body, produce condensation after picking up.
In addition, except the liquid in the container 9 being changed to the pure water of room temperature, through having made glass shaping body with above-mentioned same method, this moment is because the thermal shock when falling into liquid has the glass shaping body of 12% program to take place to break.But,, can prevent to break through pure water being heated to more than 80 ℃.In hot water, take place to go bad for fear of glass surface, whenever took out glass shaping body and carried out drying at a distance from 30 minutes.Consequently, obtained to have no qualitatively the spherical glass molding of problem.
The 3rd embodiment (making the example of glass shaping body through the method for manufacture of the 3rd glass shaping body)
Utilize the method identical, through having obtained glass block from the drip melten glass of 28mg of the nozzle of platinum alloy system, and on shaping dies, be shaped continuously the samely with first embodiment with 0.5 second interval with first embodiment.
The suction device 10 that use schematically illustrates in Figure 11 has taken out resulting glass shaping body.That is, at first, the attraction mouth 11 of 1mm place configuration suction tube 13 shown in Figure 11 above the extracting position of turntable shown in Figure 1, and the other end of suction tube 13 is configured in the top of container 9.The inner surface of this suction tube 13 and container 9 is with soft and have stable on heating Teflon (registered trademark) and process; And on suction tube 13, be provided with the circular arc bend that two place's radiuses are 80mm, so that the spheric glass shaping body can move in pipe inside swimmingly.
Shown in figure 11, on the peristome that is arranged at above the container 9, connect vacuum generator, and container 9 and the internal atmosphere that is connected the suction tube 13 on the container 9 are carried out exhaust always, produce negative pressure.Attract the spherical glass molding 3 on the shaping dies 2 through this negative pressure, and glass shaping body 3 is discharged in the container 9 successively from the other end of the pipe of suction device 10.In addition, above-mentioned negative pressure being regulated and is set in the glass shaping body 3 that can attract glass shaping body 3 reliably and be contained in the container 9 can be in the scope of vacuum generator one side shifting.
In aforesaid method, per 2000 glass shaping bodies are promptly changed container 9, and glass shaping body is received in the container 9 continuously.The glass shaping body that is held has pollution-free, seamless better quality.
In addition; The attraction mouth 11 of suction device 10 is processed into circular cone hole shape (shape that internal diameter enlarges towards the top); And make a position that attracts mouth to approach to 1mm above the shaping dies, in addition, made glass shaping body and it has been contained in the container 9 through method same as described above; Its result, the glass shaping body that is held has pollution-free, seamless better quality.
In addition; With the bottom of container 9 shown in Figure 11 from figure right-of-center in political views's side direction left side (pitch angle is 2 °), thereby the spherical glass moldinies that are discharged in the container 9 are rolled to the left end of container 9 successively, improved organic efficiency thus; In addition; Made glass shaping body and be contained in the container 9 through method same as described above, its result, the glass shaping body that is held has pollution-free, seamless better quality.
On the other hand, except in container 9, being full of the ethanol, having made glass shaping body and be contained in the container 9 through method same as described above, the glass shaping body that is held has pollution-free, seamless better quality.The alcohol vapour that in container 9, produces also is inhaled in the vacuum generator on the peristome that is connected container 9, and the alcohol vapour that is attracted liquefies through cooling tube, and is recovered as ethanol.
The 4th embodiment (making the example of glass shaping body through the method for manufacture of the 4th glass shaping body)
Shown in Figure 12 (a), 12 (b), turntable 1 be equally spaced to dispose 12 shaping dies 2 on the circumference at center with the turning axle, regulate the calibration angle of rotation of turntable 1, so that can each shaping dies 2 synchronously be transplanted on the corresponding stop place successively.With a location assignment in the above-mentioned stop place is casting position, and pipe spout 12 is set above the shaping dies that stays in casting position 2.
Make turntable 1 calibration rotation, from the shaping dies 2 of pipe spout 12 on the casting position that the rests on regulation fused glass block that drips, and the gas through spraying from shaping dies 2 belows, on one side make fused glass block float, rotate, Yi Bian the sphere of being configured as.
Then, make turntable 1 calibration rotation, thus the shaping dies 2 that will supply fused glass block take out of from casting position, and the shaping dies 1 of dummy status is moved into casting position.Be made as 1.0 seconds through separation spacing, and calibration revolving-turret 1, carry out said operation with the constant cycle each fused glass block.
Cool off above-mentioned glass shaping body 3; Even make it reach the state that the external force that is used to take out also can not be out of shape that applies; Then at the extracting position of the regulation shown in Figure 12 (a); The flow that divides with 30L/ from the gas injection apparatus 4 shown in Figure 12 (b), 12 (c) is along the inwall jet drying nitrogen of shaping dies 2 recess, thereby the spherical glass molding 3 in the recess is flown along blowing with the relative inwall of inwall that sprays said gas.Blown pre-configured suction device 10 on the position that flies with attraction mouth 11 at glass shaping body 3; Make the inside of suction device 10 produce negative pressure; Suck in the attraction mouth 11 thereby will blow the glass shaping body 3 that flies, attract the inside of the pipe on the mouth 11 to be transplanted in the container 9 through being connected through near attraction mouthful 11 negative pressure.So, the glass shaping body 3 that will arrive extracting position in succession with gas injection apparatus 4 blows and flies, and attracts and transfers to container 9 with suction device.In order not injure glass shaping body 3, the pipe in the above-mentioned suction device 10 has used the pipe of Teflon (registered trademark) system, and container 9 has used the container of stainless steel.
As stated, the separation spacing of the fused glass block in the present embodiment is 1.0 seconds utmost point short period of time, and can be under the situation that does not injure glass shaping body 3 reliably from each shaping dies 2 with its taking-up.
The 5th embodiment (the manufacturing example of optical element)
Utilize the method identical to make glass shaping body 3 with the 4th embodiment, and with this glass shaping body 3 as performing member for precise compression moulding, made optical element.
At first; Raw material to containing the glass ingredient that can obtain desired optical carries out weighing, blending, thorough mixing; Import in the melt container then and heat, melt and clarification, homogenize; Afterwards the melten glass that obtains is derived with pipe, flow out continuously from the described pipe spout of Figure 12, and be configured as the performing member that constitutes by opticglass through the method identical with the 3rd embodiment.
Then, each performing member is cleaned, after the drying, on its whole surface, is coated with carbon film, in the mixed atmosphere of nitrogen and hydrogen, heat, thereby and carry out precision moulded formation with model forming module and produce non-spherical lens.So, mass production goes out various optical elements such as non-spherical lens, spherical lens, microlens array.
Industrial applicibility
According to the present invention, thus the method for manufacture that can provide the manufacturing speed high speed that makes glass shaping body to improve the glass shaping body of mass production ability, and use the glass shaping body that obtains through this method to make the method for optical element.
Claims (5)
1. the method for manufacture of a glass shaping body is made glass shaping body through fused glass block is formed in the refrigerative process, it is characterized in that,
Through nozzle from drip the in succession fused glass block of equal in quality of continuous effusive melten glass,
Recycle synchronization-moving a plurality of shaping dies and said fused glass block be configured as spherical, obtain the glass shaping body below the 30mg,
So that air-flow slips into the mode of the downside of the glass shaping body that obtains said glass shaping body is applied blast, it is blown from shaping dies fly, and will blow the molding that flies and be received in the liquid.
2. the method for manufacture of a glass shaping body is made glass shaping body through fused glass block is formed in the refrigerative process, it is characterized in that,
Isolate the fused glass block of equal in quality in succession from continuous effusive melten glass,
Recycle synchronization-moving a plurality of shaping dies and said fused glass block be configured as spherical, obtain glass shaping body,
So that air-flow slips into the mode of the downside of the glass shaping body that obtains said glass shaping body is applied blast; It is blown from shaping dies fly; And accept with gutter shape path and to blow the molding that flies with recess; Make this molding in said recess, move cooling on one side on one side; And said gutter shape via configuration is become with respect to the horizontal plane to have the pitch angle, regulate the translational speed of the glass shaping body that moves along said gutter shape path, the breaking of the glass shaping body that prevents to cause because of thermal shock through regulating said pitch angle.
3. the method for manufacture of glass shaping body as claimed in claim 2 is characterized in that, the said glass shaping body of refrigerative is received in the liquid with in the recess of said gutter shape path, moving on one side on one side.
4. the method for manufacture of a glass shaping body is made glass shaping body through fused glass block is formed in the refrigerative process, it is characterized in that,
Isolate the fused glass block of equal in quality in succession from continuous effusive melten glass,
Recycle synchronization-moving a plurality of shaping dies said fused glass block formed, obtain glass shaping body,
Glass shaping body to obtaining applies blast; It is blown along the inwall relative with the inwall of the said recess that applies said blast in the recess of shaping dies fly, blow the suction device that flies the position and attract and hold and blown the said glass shaping body that flies through being pre-configured in then.
5. the method for manufacture of an optical element is characterized in that, to making glass shaping body through each described method in the claim 1 to 4, and resulting glass shaping body is carried out precision moulded formation.
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| CN201210026891.9A CN102603160B (en) | 2006-04-27 | 2007-03-21 | The manufacture method of glass shaping body and the manufacture method of optical element |
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| JP2016124733A (en) * | 2014-12-26 | 2016-07-11 | Hoya株式会社 | Production method of glass gob, and production apparatus of glass gob |
| US10640409B2 (en) * | 2016-12-28 | 2020-05-05 | Koa Glass Co., Ltd. | Method of manufacturing glass container |
| CN112537900B (en) * | 2020-11-19 | 2022-12-20 | 四川天马玻璃有限公司 | Forming process for effectively reducing bulge of mold hole of glass bottle body |
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| CN1384071A (en) * | 2001-05-01 | 2002-12-11 | 保谷株式会社 | Glass block making process, former and formed product and optical element making process |
| CN1408657A (en) * | 2001-09-20 | 2003-04-09 | 保谷株式会社 | Method for producing glass formed body, finished article and optical element and device for producing glass formed body |
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| JPH09110446A (en) * | 1995-10-12 | 1997-04-28 | Olympus Optical Co Ltd | Production of very small diameter spherical lens and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1384071A (en) * | 2001-05-01 | 2002-12-11 | 保谷株式会社 | Glass block making process, former and formed product and optical element making process |
| CN1408657A (en) * | 2001-09-20 | 2003-04-09 | 保谷株式会社 | Method for producing glass formed body, finished article and optical element and device for producing glass formed body |
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| JP特开平9-110446A 1997.04.28 |
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| JP2007297221A (en) | 2007-11-15 |
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