TWI427042B - A glass forming apparatus, a glass forming method, and a glass molded article manufacturing apparatus - Google Patents
A glass forming apparatus, a glass forming method, and a glass molded article manufacturing apparatus Download PDFInfo
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- TWI427042B TWI427042B TW096116469A TW96116469A TWI427042B TW I427042 B TWI427042 B TW I427042B TW 096116469 A TW096116469 A TW 096116469A TW 96116469 A TW96116469 A TW 96116469A TW I427042 B TWI427042 B TW I427042B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it
- C03B40/04—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it using gas
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- 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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Description
本發明係關於玻璃成形裝置、玻璃成形方法、以及玻璃成形品製造裝置，尤其係關於使玻璃成形品成形之成形模。The present invention relates to a glass forming apparatus, a glass forming method, and a glass molded product manufacturing apparatus, and more particularly to a forming mold for molding a glass molded article.
例如，作為製造透鏡等光學玻璃元件之方法，存在以精密壓製來進行製造之技術：對形狀接近被稱為預成型坯之成品之玻璃成形品進行加熱，使上述玻璃成形品軟化，並利用具有高精密面之模具進行壓製，在模具面上進行轉印。For example, as a method of manufacturing an optical glass element such as a lens, there is a technique of manufacturing by precision pressing: heating a glass molded article having a shape close to a finished product called a preform, and softening the glass molded article, and using The mold of high precision surface is pressed and transferred on the mold surface.
利用如下方法來製造上述預成型坯：例如，使熔融狀態之光學玻璃材料流下至噴出氣體之成形模之成形面上，一面使上述熔融狀態之光學玻璃材料保持為懸浮在成形面上之狀態一面加以冷卻。例如在下述專利文獻1中揭示有如下製造方法：在噴出氣體之狀態下之多孔質模具之承接面上，利用氣體，在懸浮之非接觸狀態下承接使自熔融玻璃流出口流出之熔融玻璃流，從而獲得熔融玻璃塊來作為光學元件成形用材料。上述製造方法中所使用之多孔質模具有如下構造：使自多孔質模具之承接面噴出之氣體中之、無助於使熔融玻璃塊懸浮之剩餘的氣體流，不向熔融玻璃流出口之方向噴出。即，為如下模具構造：將外蓋覆蓋在除了承接面以外之多孔質模具之上表面，以不使剩餘之氣體流向流出口之方向噴出。The preform is produced by, for example, flowing the molten optical glass material down to the molding surface of the molding die that ejects the gas while maintaining the molten optical glass material in a state of being suspended on the molding surface. Cool it down. For example, Patent Document 1 discloses a manufacturing method in which a molten glass flow which flows out from a molten glass outflow port is received by a gas in a non-contact state in which a gas is discharged in a state in which a gas is ejected. Thus, a molten glass lump was obtained as a material for forming an optical element. The porous mold used in the above production method has a structure in which the remaining gas flow in the gas ejected from the receiving surface of the porous mold does not contribute to suspending the molten glass lump, and does not flow toward the molten glass outflow port. ejection. That is, it is a mold structure in which the outer cover is covered on the upper surface of the porous mold except the receiving surface so as not to be ejected in the direction in which the remaining gas flows toward the outflow port.
[專利文獻1]日本專利特開2000－095531號公報[Patent Document 1] Japanese Patent Laid-Open Publication No. 2000-095531
然而，在上述專利文獻1中所揭示之玻璃成形裝置之多孔質模具中，因除了多孔質模具之承接面以外，均由外蓋所覆蓋，故有時多孔質模具會與外蓋脫離。又，存在如下問題：因使用而導致僅上表面之外蓋延伸，在多孔質模具與外蓋之間產生空隙，從而氣流洩漏。However, in the porous mold of the glass forming apparatus disclosed in Patent Document 1, since the outer surface of the porous mold is covered by the outer cover, the porous mold may be separated from the outer cover. Further, there is a problem that only the outer surface of the upper surface extends due to use, and a gap is formed between the porous mold and the outer cover, so that the air current leaks.
又，存在如下等問題：因一面噴出氣體，一面製造熔融玻璃塊，故當噴出之氣體中存在雜質時，在所製造出之預成型坯中亦會混入雜質，從而遮住光路或者導致光散射，從而無法作為光學元件用之玻璃來滿足透射率等光學常數。然而，在上述專利文獻1中，並未涉及對所噴出之氣體進行淨化之方面。Further, there is a problem that a molten glass lump is produced while ejecting a gas on one side. Therefore, when impurities are present in the ejected gas, impurities are also mixed in the produced preform to cover the optical path or cause light scattering. Therefore, it is not possible to satisfy the optical constant such as the transmittance as the glass for the optical element. However, in the above Patent Document 1, the aspect of purifying the discharged gas is not involved.
本發明係鑒於上述問題開發而成者，提供具有易於加工且即使長期使用亦不易劣化之成形模之玻璃成形裝置、玻璃成形方法、以及玻璃成形品製造裝置。The present invention has been developed in view of the above problems, and provides a glass forming apparatus, a glass forming method, and a glass molded product manufacturing apparatus which have a molding die which is easy to process and which is not easily deteriorated even after long-term use.
為解決上述問題，本發明者發現藉由僅自成形模之承接面噴出氣體，較好的是藉由對除了成形模之承接面以外之外側面實施塞孔處理，可以使加工變得容易且經得住長期使用，從而完成了本發明。更具體而言，本發明提供如下所述之裝置以及方法。In order to solve the above problems, the inventors have found that by ejecting gas only from the receiving surface of the forming mold, it is preferable to perform the plugging treatment on the side other than the receiving surface of the forming mold, so that the processing can be facilitated and The invention has been completed with long-term use. More specifically, the present invention provides apparatus and methods as described below.
(1)一種玻璃成形裝置，其具有可以使氣體通過之成形模，且在噴出氣體之上述成形模之承接面上承接熔融玻璃，上述成形模僅自承接面噴出氣體。(1) A glass forming apparatus having a molding die through which a gas can pass, and a molten glass is received on a receiving surface of the forming die for ejecting gas, and the forming die ejects gas only from a receiving surface.
本發明之玻璃成形裝置僅自承接熔融玻璃之承接面噴出氣體。因此，僅用於使熔融玻璃懸浮，且因未噴出剩餘之氣體，故效率較高。又，因未利用自承接面以外之面噴出之氣體來冷卻流下裝置之熔融玻璃，故可以有效地防止產生條紋。又，因可以在浮游在成形模上之狀態下來製造預成型坯，故可以製造在玻璃表面上無皺折等缺陷且表面光滑之預成型坯。The glass forming apparatus of the present invention ejects gas only from the receiving surface of the molten glass. Therefore, it is only used to suspend the molten glass, and since the remaining gas is not ejected, the efficiency is high. Further, since the molten glass of the downstream device is not cooled by the gas ejected from the surface other than the receiving surface, streaking can be effectively prevented. Further, since the preform can be produced while floating on the molding die, it is possible to produce a preform having a surface free from defects such as wrinkles on the surface of the glass.
(2)如(1)之玻璃成形裝置，對上述成形模之除了承接面以外之外側面實施塞孔處理。(2) The glass forming apparatus according to (1), wherein the side surface of the forming mold other than the receiving surface is subjected to a plugging treatment.
(3)如(2)之玻璃成形裝置，上述塞孔處理係選自由利用液狀組成物來堵塞氣孔並使上述氣孔硬化之處理、利用電漿噴散來堵塞氣孔之處理、利用CVD(Chemical Vapor Deposition，化學氣相沈積)來堵塞氣孔之處理、以及利用電鍍處理來堵塞氣孔之處理所組成之群之處理。(3) The glass forming apparatus according to (2), wherein the plugging treatment is selected from the group consisting of a process of clogging the pores by the liquid composition and curing the pores, and clogging the pores by plasma spray, and using CVD (Chemical) Vapor Deposition (Chemical Vapor Deposition) is a process of blocking the pores and treating the group of pores by plating.
根據上述形態，藉由對成形模之除了承接面以外之面實施塞孔處理，可以僅自承接面噴出氣體。又，因直接對母材(對成形模實施塞孔處理前之部件)實施塞孔處理，故不會如在母材上放置外蓋時般，因使用而使母材與外蓋脫離。其次，不會產生因使外蓋延伸，而使母材與外蓋之間產生空隙，從而導致氣體洩漏，故可以經得住長期使用。又，對於塞孔處理而言，較好的是使用上述處理。通過實施上述處理，可以僅堵塞氣孔，或者可以使形成在成形模上之膜變薄，因此可以使成形模小型化。又，因直接對成形模實施塞孔處理，故可以僅對成形模之承接面進行再加工。According to the above aspect, by performing the plugging treatment on the surface other than the receiving surface of the forming mold, it is possible to eject the gas only from the receiving surface. Further, since the base material (the member before the plugging process is applied to the forming mold) is directly subjected to the plugging treatment, the base material and the outer lid are not separated by the use as in the case where the outer lid is placed on the base material. Secondly, there is no possibility that a gap is formed between the base material and the outer cover by extending the outer cover, thereby causing gas leakage, so that it can withstand long-term use. Further, for the plugging treatment, it is preferred to use the above treatment. By performing the above treatment, it is possible to block only the pores or to thin the film formed on the molding die, so that the molding die can be miniaturized. Further, since the plugging process is directly performed on the forming die, it is possible to rework only the receiving surface of the forming die.
(4)如(1)至(3)中任一項之玻璃成形裝置，上述成形模由多孔質材料而形成。(4) The glass forming apparatus according to any one of (1) to (3) wherein the forming die is formed of a porous material.
根據上述形態，因成形模由多孔質材料而形成，故藉由對具有預期之成形模形狀之成形體進行燒結，可以製造承接面與側面為一體之成形模。因此，無須連接承接面與側面，故可以製造氣體不會自連接部洩漏之良好之預成型坯。又，藉由使用多孔質材料，可以省略打開氣孔之步驟，上述氣孔形成在承接面上且使氣體通過。進而，因氣孔均勻地形成在整個承接面上，故可以自整個承接面均勻地噴出氣體。According to the above aspect, since the molding die is formed of a porous material, the molding die having the desired molding die shape can be sintered, whereby the molding die in which the receiving surface and the side surface are integrated can be manufactured. Therefore, it is not necessary to connect the receiving surface and the side surface, so that it is possible to manufacture a good preform in which gas does not leak from the joint portion. Further, by using a porous material, the step of opening the pores can be omitted, and the pores are formed on the receiving surface and allow gas to pass therethrough. Further, since the pores are uniformly formed on the entire receiving surface, the gas can be uniformly discharged from the entire receiving surface.
(5)如(4)之玻璃成形裝置，在自上述多孔質材料之細孔直徑之容積基準(volume basis)之眾數徑的-50%至+50%之細孔直徑之範圍內，含有之細孔容積為80%或超過80%。(5) The glass forming apparatus according to (4), which is contained within a range of from -50% to +50% of the pore diameter of the volume diameter of the pore diameter of the porous material. The pore volume is 80% or more than 80%.
根據上述形態，因細孔之直徑大致均勻，故浮游之預成型坯穩定，從而可以製造形狀均勻之預成型坯。According to the above aspect, since the diameter of the pores is substantially uniform, the floating preform is stabilized, and a preform having a uniform shape can be produced.
(6)如(4)或者(5)之玻璃成形裝置，上述多孔質材料之細孔直徑之容積基準(volume basis)之眾數徑處於10μm到400μm的範圍。(6) The glass forming apparatus according to (4) or (5), wherein the volume diameter of the pore diameter of the porous material is in the range of 10 μm to 400 μm.
根據上述形態，因細孔直徑之眾數徑為10μm到400μm，故浮游之預成型坯穩定，且無須對氣體之壓送施加負荷即可以製造。若細孔直徑之眾數徑超出上述範圍，則懸浮之預成型坯不穩定，因此不理想。又，若上述細孔直徑之眾數徑低於上述範圍，則無法噴出懸浮所必須之氣體，會對氣體之壓送施加過量之負荷，因此不理想。According to the above aspect, since the mode diameter of the pore diameter is from 10 μm to 400 μm, the floating preform is stable and can be produced without applying a load to the gas pressure feed. If the mode diameter of the pore diameter exceeds the above range, the suspended preform is unstable, which is not preferable. Further, when the mode diameter of the pore diameter is less than the above range, the gas necessary for the suspension cannot be ejected, and an excessive load is applied to the pressure feed of the gas, which is not preferable.
(7)如(4)至(6)中任一項之玻璃成形裝置，上述多孔質材料之氣孔率為50%或未滿50%。(7) The glass forming apparatus according to any one of (4) to (6) wherein the porous material has a porosity of 50% or less than 50%.
根據上述形態，因多孔質材料之氣孔率為50%以下，故容易獲得使自流下裝置滴下之熔融玻璃懸浮所必須之氣體之噴出量，且不易對氣體之壓送施加過量之負荷。因此，可以高效地製造預成型坯。According to the above aspect, since the porosity of the porous material is 50% or less, it is easy to obtain the discharge amount of the gas necessary for suspending the molten glass dropped from the downstream device, and it is difficult to apply an excessive load to the pressure feed of the gas. Therefore, the preform can be manufactured efficiently.
(8)如(1)至(7)中任一項之玻璃成形裝置，上述氣體係空氣或者惰性氣體。(8) The glass forming apparatus according to any one of (1) to (7), wherein the air system is air or an inert gas.
根據上述形態，因氣體係空氣或者惰性氣體，故不會與玻璃之組成物發生反應，從而可以製造具有預期組成之預成型坯。作為惰性氣體，可以列舉氮、氬、氦等。According to the above aspect, since the air of the gas system or the inert gas does not react with the composition of the glass, the preform having the desired composition can be produced. Examples of the inert gas include nitrogen, argon, helium, and the like.
(9)如(1)至(8)中任一項之玻璃成形裝置，設置加熱機構，上述加熱機構根據須要而對上述氣體進行加熱。(9) The glass forming apparatus according to any one of (1) to (8), wherein a heating means is provided, and the heating means heats the gas as needed.
根據上述形態，可以根據須要來對氣體進行加熱。因此，可以防止由自成形模之承接面噴出之氣體引起之急冷，從而可以防止預成型坯產生裂痕和條紋。對於對氣體進行加熱之加熱機構而言，可以利用燃燒器或者加熱器來進行加熱，還可以通過對成形模或者使氣體通過之配管等進行加熱，來對自承接面噴出之氣體進行加熱。上述方法之中，較好的是使用構成簡單且有效之對成形模進行加熱之方法。According to the above aspect, the gas can be heated as needed. Therefore, it is possible to prevent quenching caused by the gas ejected from the receiving surface of the self-forming mold, thereby preventing cracks and streaks from occurring in the preform. The heating means for heating the gas can be heated by a burner or a heater, and the gas ejected from the receiving surface can be heated by heating a forming die or a pipe through which the gas passes. Among the above methods, it is preferred to use a method which is simple and effective in heating the forming mold.
(10)如(1)至(9)中任一項之玻璃成形裝置，在將上述氣體供給至上述成形模之前，設置上述氣體通過之淨化機構。(10) The glass forming apparatus according to any one of (1) to (9), wherein the gas passing through the purifying mechanism is provided before the gas is supplied to the forming mold.
(11)如(10)之玻璃成形裝置，上述淨化機構係過濾器。(11) The glass forming apparatus according to (10), wherein the purifying mechanism is a filter.
根據上述形態，因在將上述氣體供給至成形模之前設置淨化機構，故可以去除所供給之氣體中之灰塵等，從而可以製造未混入雜質之預成型坯。對於淨化機構而言，較好的是使用過濾器，對於通過淨化機構後之氣體之清潔度而言，較好的是在大氣壓狀態下之每1升容積中，0.3 μm以上之粒子為100個以下，更好的是50個以下，最好的是10個以下。According to the above aspect, since the purifying mechanism is provided before the gas is supplied to the forming mold, the dust or the like in the supplied gas can be removed, and the preform in which the impurities are not mixed can be produced. For the purifying mechanism, it is preferable to use a filter. For the cleanliness of the gas after passing through the purifying mechanism, it is preferable that 100 particles of 0.3 μm or more per one liter of volume under atmospheric pressure are used. Below, more preferably 50 or less, and most preferably 10 or less.
(12)一種玻璃成型品製造裝置，包括：溶解裝置，其具有使原料熔融成熔融玻璃之熔融槽、以及與上述熔融槽連接並使上述熔融玻璃自上述熔融槽流出之引導道；流下裝置，其使通過上述引導道流出之熔融玻璃流下；玻璃成形裝置，其具有使上述熔融玻璃成形之成形模；以及搬運裝置，其搬運由上述成形模成形之玻璃成形品；且上述玻璃成形裝置係(1)至(11)中任一項之玻璃成形裝置。(12) A glass molded product manufacturing apparatus comprising: a dissolving device having a melting tank for melting a raw material into molten glass; and a guiding passage connected to the melting tank to cause the molten glass to flow out from the melting tank; The glass forming apparatus has a molding die for molding the molten glass, and a conveying device for conveying the glass molded article formed by the molding die; and the glass forming device is The glass forming apparatus according to any one of (1) to (11).
根據上述形態，藉由將本發明之玻璃成形裝置用作具有溶解裝置、流下裝置、以及搬運裝置之玻璃成形品製造裝置，可以提高生產性，故適合使用。According to the above aspect, the glass forming apparatus of the present invention can be used as a glass molded product producing apparatus having a dissolving device, a downflow device, and a conveying device, thereby improving productivity.
(13)一種光學元件用預成型坯，利用(1)至(11)中任一項之玻璃成形裝置或者(12)之玻璃成形品製造裝置而成形。(13) A preform for an optical element, which is formed by the glass forming apparatus according to any one of (1) to (11) or the glass molded article manufacturing apparatus of (12).
根據上述形態，利用(1)至(11)中任一項之玻璃成形裝置或者(12)之玻璃成形品製造裝置而成形之預成型坯，不會產生裂痕、條紋，且混入之雜質亦較少，故適合用作光學元件。According to the above aspect, the preform formed by the glass forming apparatus according to any one of (1) to (11) or the glass molded article manufacturing apparatus of (12) is free from cracks and streaks, and the impurities are mixed. It is suitable for use as an optical component.
(14)一種玻璃成形方法，其使熔融玻璃成形為玻璃，且包括：流下步驟，其使熔融玻璃流下；熔融玻璃塊成形步驟，其一面僅自可以使氣體通過之成形模之承接面噴出氣體，一面在成形模之承接面上承接住上述已流下之熔融玻璃，使熔融玻璃塊成形；以及冷卻步驟，其使上述熔融玻璃塊冷卻，使玻璃成形。(14) A glass forming method for forming molten glass into glass, comprising: a down-flow step of flowing down the molten glass; and a step of forming a molten glass block on which one side ejects gas only from a receiving surface of the forming die through which the gas can pass And the molten glass is formed by receiving the molten glass that has flowed down on the receiving surface of the forming mold, and a cooling step of cooling the molten glass to form the glass.
(15)如(14)之玻璃成形方法，對上述成形模之除了承接面以外之外側面實施塞孔處理。(15) The glass forming method according to (14), wherein the side surface of the forming die other than the receiving surface is subjected to a plugging treatment.
(16)如(15)之玻璃成形方法，上述塞孔處理係選自由利用液狀組成物來堵塞氣孔並使上述氣孔硬化之處理、利用電漿噴散來堵塞氣孔之處理、利用CVD來堵塞氣孔之處理、以及利用電鍍處理來堵塞氣孔之處理所組成之群之處理。(16) The glass forming method according to (15), wherein the plugging treatment is selected from the group consisting of a process of clogging the pores by the liquid composition and curing the pores, a treatment of clogging the pores by plasma spray, and clogging by CVD. The treatment of the pores and the treatment of the group consisting of the treatment of the pores by the plating treatment.
(17)如(14)至(16)中任一項之玻璃成形方法，在上述熔融玻璃塊成形步驟中，上述成形模由多孔質材料而形成。(17) The glass forming method according to any one of (14) to (16) wherein, in the molten glass block forming step, the forming die is formed of a porous material.
(18)如(17)之玻璃成形方法，在自上述多孔質材料之細孔直徑之容積基準(volume basis)之眾數徑的-50%至+50%之細孔直徑之範圍內，含有之細孔容積為80%或超過80%。(18) The glass forming method according to (17), which is contained within a range of from -50% to +50% of the pore diameter of the volume diameter of the pore diameter of the porous material. The pore volume is 80% or more than 80%.
(19)如(17)或者(18)之玻璃成形方法，上述多孔質材料之細孔直徑之容積基準(volume basis)之眾數徑處於10μm到400μm的範圍。(19) The glass forming method according to (17) or (18), wherein the volume diameter of the pore diameter of the porous material is in the range of 10 μm to 400 μm.
(20)如(17)至(19)中任一項之玻璃成形方法，上述多孔質材料之氣孔率為50%或未滿50%。(20) The glass forming method according to any one of (17) to (19), wherein the porous material has a porosity of 50% or less than 50%.
(21)如(14)至(20)中任一項之玻璃成形方法，在上述熔融玻璃塊成形步驟中，在上述熔融玻璃不與上述承接面接觸之狀態下使熔融玻璃塊成形。(21) The glass forming method according to any one of (14) to (20), wherein in the molten glass lump forming step, the molten glass lump is formed in a state where the molten glass is not in contact with the receiving surface.
(22)如(14)至(21)中任一項之玻璃成形方法，噴出空氣或者惰性氣體來作為上述氣體。(22) The glass forming method according to any one of (14) to (21), wherein air or an inert gas is ejected as the gas.
(23)如(14)至(22)中任一項之玻璃成形方法，根據須要來對上述氣體進行加熱。(23) The glass forming method according to any one of (14) to (22), wherein the gas is heated as needed.
(24)如(14)至(23)中任一項之玻璃成形方法，包含對上述氣體進行淨化之淨化步驟。(24) The glass forming method according to any one of (14) to (23), comprising a purification step of purifying the gas.
(25)如(24)之玻璃成形方法，上述淨化步驟係使上述氣體通過過濾器之步驟。(25) The glass forming method of (24), wherein the purifying step is a step of passing the gas through the filter.
(26)一種光學元件用預成型坯，其利用(14)至(25)中任一項之玻璃成形方法而成形。(26) A preform for an optical element, which is formed by the glass forming method according to any one of (14) to (25).
(14)~(25)之玻璃成形方法係將上述(1)~(11)之玻璃成形裝置作為玻璃成形方法展開而成者。根據上述玻璃成形方法，可以實現與在敍述上述玻璃成形裝置時之效果同樣之效果。The glass forming method of (14) to (25) is that the glass forming apparatus of the above (1) to (11) is developed as a glass forming method. According to the glass forming method described above, the same effects as those described in the above-described glass forming apparatus can be achieved.
(27)一種玻璃成形裝置，其特徵在於：具有可以使氣體通過之成形模，在噴出氣體之上述成形模之承接面上承接熔融玻璃，且在將上述氣體供給至上述成形模之前，設置使上述氣體通過之淨化機構。(27) A glass forming apparatus comprising: a molding die through which a gas can pass, a molten glass is received on a receiving surface of the molding die for ejecting a gas, and the gas is supplied before being supplied to the forming die The purifying mechanism through which the above gas passes.
(28)如(27)之玻璃成形裝置，上述淨化機構係過濾器。(28) The glass forming apparatus according to (27), wherein the purifying mechanism is a filter.
(29)一種玻璃成形裝置，其具有可以使氣體通過之成形模，在噴出氣體之上述成形模之承接面上承接熔融玻璃，且在將上述氣體供給至上述成形模之前設置淨化機構，上述淨化機構對上述氣體進行處理，以使在大氣壓狀態下之每1升容積中，0.3 μm以上之粒子為100個以下。(29) A glass forming apparatus having a molding die through which a gas can pass, a molten glass is received on a receiving surface of the forming die for ejecting a gas, and a purifying mechanism is provided before the gas is supplied to the forming die, and the purifying is performed The mechanism treats the gas so that the particles having a particle diameter of 0.3 μm or more per 100 liters in an atmospheric pressure state are 100 or less.
根據(27)至(29)之玻璃成形裝置，因在將上述氣體供給至成形模之前設置淨化機構，故可以去除所供給之氣體中之灰塵等，從而可以製造未混入雜質之預成型坯。According to the glass forming apparatus of (27) to (29), since the purifying mechanism is provided before the gas is supplied to the forming mold, the dust or the like in the supplied gas can be removed, and the preform in which the impurities are not mixed can be produced.
根據本發明之玻璃成形裝置以及玻璃成形方法，可以製造如下高品質之預成型坯，即，通過僅自成形模之承接面噴出氣體，在壓送氣體時效率較高且無條紋等。又，藉由直接對母材(對成形模實施塞孔處理或者放置外蓋前之部件)進行處理而實施塞孔處理，因此不會如在母材上放置外蓋般，因使用而使母材與外蓋脫離。其次，不會因外蓋延伸而在母材與外蓋之間產生空隙，從而導致氣體洩漏，故可以經得住長期使用。According to the glass forming apparatus and the glass forming method of the present invention, it is possible to produce a high-quality preform by ejecting gas only from the receiving surface of the forming mold, and it is highly efficient and has no streaks when the gas is pressurized. Further, since the plugging treatment is performed by directly processing the base material (the member before the plugging process is performed on the forming mold or the member before the outer lid is placed), the mating is not performed as in the base material, and the mother is used as it is. The material is separated from the outer cover. Secondly, no gap is formed between the base material and the outer cover due to the extension of the outer cover, thereby causing gas leakage, so that it can withstand long-term use.
以下，根據附圖來說明本發明之一實施形態，但本發明不限於此。圖1係表示含有本發明之一實施形態之玻璃成形裝置10之玻璃成形品製造裝置1的構成之正視圖，圖2係表示本發明之玻璃成形裝置10之構成之立體圖，圖3係構成本發明之玻璃成形裝置10之一部分之成形模11的示意剖面圖。Hereinafter, an embodiment of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. 1 is a front view showing a configuration of a glass molded product manufacturing apparatus 1 including a glass forming apparatus 10 according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a configuration of a glass forming apparatus 10 of the present invention, and FIG. 3 is a configuration of the present invention. A schematic cross-sectional view of a forming die 11 of a portion of the glass forming apparatus 10 of the invention.
如圖1所示，玻璃成形品製造裝置1包括具有熔融槽31以及引導道32之溶解裝置30。玻璃成形品製造裝置1更包括流下裝置33、玻璃成形裝置10、第1移載裝置40、以及搬運裝置50。As shown in FIG. 1, the glass molded article manufacturing apparatus 1 includes a dissolution device 30 having a melting tank 31 and a guide passage 32. The glass molded product manufacturing apparatus 1 further includes a downflow device 33, a glass forming device 10, a first transfer device 40, and a transfer device 50.
圖1中，熔融槽31使微粒或者玻璃屑等原料熔融後成為熔融玻璃。引導道32與熔融槽31連接，自熔融槽31流出熔融玻璃。流下裝置33使通過引導道32流出之熔融玻璃流下。實際而言，引導道32以及流下裝置33係使熔融玻璃流下之金屬管，將上述金屬管之傾斜部位設為引導道32，將上述金屬管之大致垂直部位設為流下裝置33。In Fig. 1, the melting tank 31 melts a raw material such as fine particles or glass cullet to become molten glass. The guide passage 32 is connected to the melting tank 31, and flows out of the molten glass from the melting tank 31. The downflow device 33 causes the molten glass flowing out through the guide path 32 to flow down. Actually, the guide passage 32 and the downflow device 33 are metal pipes that flow down the molten glass, and the inclined portion of the metal pipe is used as the guide passage 32, and the substantially vertical portion of the metal pipe is the downflow device 33.
圖1中，玻璃成形裝置10具有使熔融玻璃成形之多個成形模11。搬運裝置50搬運由成形模11形成之玻璃成形品。第1移載裝置40將玻璃成形品自玻璃成形裝置10移載至搬運裝置50。In Fig. 1, a glass forming apparatus 10 has a plurality of forming dies 11 for molding molten glass. The conveying device 50 conveys the glass molded article formed by the molding die 11. The first transfer device 40 transfers the glass molded product from the glass forming device 10 to the transfer device 50.
其次，說明本發明之玻璃成形裝置10。如圖2所示，本發明之玻璃成形裝置10包括圓盤狀之旋轉台12，上述旋轉台12之中心部旋轉自如地受到支撐，且可以順時針或者逆時針地旋轉。旋轉台12上具有配置在旋轉台12之周緣部之同心位置上之多個成形模11、以及保持成形模11之固定器17。另外，圖2中省略了成形模11以及固定器17之一部分。又，玻璃成形裝置10包括：旋轉軸13，其貫通旋轉台12之中心部，且相對於旋轉台12之盤面而上下垂直地延伸；以及送氣管14，其自旋轉軸13之上部貫通旋轉軸13內部，並與連結管15連結。玻璃成形裝置10具有連結管15，此連結管15自旋轉台12之中心部向固定器17延伸。供給至成形模11之氣體通過送氣管14、連結管15和固定器17而供給至成形模11中。Next, the glass forming apparatus 10 of the present invention will be described. As shown in Fig. 2, the glass forming apparatus 10 of the present invention includes a disk-shaped rotary table 12, and the center portion of the rotary table 12 is rotatably supported and rotatable clockwise or counterclockwise. The rotary table 12 has a plurality of molding dies 11 disposed at concentric positions on the peripheral edge portion of the rotary table 12, and a holder 17 that holds the molding die 11. In addition, a part of the forming die 11 and the holder 17 is omitted in FIG. Further, the glass forming apparatus 10 includes a rotating shaft 13 that penetrates the center portion of the turntable 12 and extends vertically upward and downward with respect to the disk surface of the turntable 12, and an air supply pipe 14 that passes through the rotating shaft from the upper portion of the rotating shaft 13 13 is internal and connected to the connecting pipe 15. The glass forming apparatus 10 has a connecting pipe 15 that extends from the center portion of the turntable 12 toward the holder 17. The gas supplied to the forming die 11 is supplied to the forming die 11 through the air supply pipe 14, the connecting pipe 15, and the holder 17.
又，玻璃成形裝置10具有加熱機構，上述加熱機構可以根據須要來對供給至成形模11之氣體進行加熱。加熱機構設在成形模11之側部，通過對成形模11進行加熱來對氣體進行加熱。在本實施形態中，利用燃燒器16來對成形模11進行加熱，但不限於此。例如，可以使用如下方法，即，使加熱器來加熱成形模11，或者藉由對成形模11通電來直接加熱成形模11。通過對氣體進行加熱，可以防止熔融玻璃之急冷，從而可以防止已成形之預成型坯產生裂痕、條紋。Further, the glass forming apparatus 10 has a heating mechanism that can heat the gas supplied to the forming die 11 as needed. The heating mechanism is provided at the side of the forming mold 11, and the gas is heated by heating the forming mold 11. In the present embodiment, the forming die 11 is heated by the burner 16, but the invention is not limited thereto. For example, a method of heating the forming die 11 by a heater or directly heating the forming die 11 by energizing the forming die 11 can be used. By heating the gas, it is possible to prevent the molten glass from being quenched, thereby preventing cracks and streaks in the formed preform.
進而，如圖1所示，玻璃成形裝置10為將供給至成形模11之氣體之雜質去除而包括作為淨化機構之過濾器18。使氣體通過過濾器18後加以供給，藉此可以使成形之玻璃成形品為混入較少雜質之玻璃成形品。又，在圖1中，在玻璃成形裝置10之入口設置過濾器18，但可以不對過濾器18之位置、大小加以特別限定地設置過濾器18。又，當使用壓縮機來供給氣體時，較好的是使用微粒固形物之過濾器、濾塵器、油霧濾清器來作為淨化機構，且較好的是在氣體之流路上按照上述順序成列地設置上述過濾器。對於過濾器18而言，較好的是按照上述順序成列地配置例如SMC株式會社製造之分霧器AM450、微型分霧器AMD450、以及超級分霧器AME450。Further, as shown in FIG. 1, the glass forming apparatus 10 includes a filter 18 as a purifying mechanism for removing impurities of a gas supplied to the forming die 11. The gas is passed through the filter 18 and supplied, whereby the formed glass molded article can be a glass molded article in which less impurities are mixed. Further, in Fig. 1, the filter 18 is provided at the inlet of the glass forming apparatus 10. However, the filter 18 may be provided without particularly limiting the position and size of the filter 18. Further, when a compressor is used to supply the gas, it is preferred to use a filter of a particulate solid, a dust filter, and an oil mist filter as a purifying mechanism, and it is preferable to form the gas flow path in the above-described order. Set the above filters in the column. For the filter 18, it is preferable to arrange, for example, a mist splitter AM450, a micro mist splitter AMD450, and a super mist splitter AME450 manufactured by SMC Co., Ltd. in the above-described order.
圖3係表示構成本發明之玻璃成形裝置10之一部分之成形模11的示意剖面圖。成形模11設置在流下裝置33之下方，且具有承接住自流下裝置33流下之熔融玻璃之承接面114。成形模11呈在內部具有氣體供給室112之箱狀，且由多孔質體111而形成，上述多孔質體111由多孔質材料而形成。多孔質體111具有耐熱性，此處，多孔質體111由燒結不銹鋼而成之多孔性金屬所形成。因此，在成形模11之整個面上設置有多數個微細孔。為防止自上述多數個微細孔洩漏出氣體，對除了承接面114以外之面實施塞孔處理。圖1中，作為塞孔處理之一例，利用電鍍處理來在成形模11之除了承接面114以外之面上形成電鍍層113，以堵塞多餘之微細孔。藉此，僅在承接面114上形成連結氣體供給室112與外部之多數個微細孔。Fig. 3 is a schematic cross-sectional view showing a molding die 11 constituting a part of the glass forming apparatus 10 of the present invention. The forming die 11 is disposed below the downflow device 33 and has a receiving surface 114 that receives the molten glass flowing down from the lower flow device 33. The molding die 11 has a box shape having a gas supply chamber 112 therein and is formed of a porous body 111, and the porous body 111 is formed of a porous material. The porous body 111 has heat resistance. Here, the porous body 111 is formed of a porous metal made of sintered stainless steel. Therefore, a plurality of fine holes are provided on the entire surface of the forming mold 11. In order to prevent leakage of gas from the plurality of fine pores, a plugging treatment is performed on the surface other than the receiving surface 114. In Fig. 1, as an example of the plug hole processing, a plating layer 113 is formed on the surface of the forming mold 11 other than the receiving surface 114 by plating treatment to block the excess fine pores. Thereby, a plurality of fine holes that connect the gas supply chamber 112 to the outside are formed only on the receiving surface 114.
對於形成成形模11之多孔質體111而言，不僅由多孔質材料來形成承接面，且由多孔質材料來形成側面、底面，多孔質體111係一體型者。藉由燒結不銹鋼來形成多孔質體，使不銹鋼形成為預期形狀，並進行燒結，藉此可以容易地成形。又，因多孔質體係一體型者，故無須連接多孔質體之承接面與側面，因此不會噴出自連接部供給至氣體供給室112之氣體。對於多孔質材料而言，除了上述不銹鋼之外，亦可以使用多孔質碳等。In the porous body 111 in which the molding die 11 is formed, not only the porous surface but also the bottom surface and the bottom surface are formed of the porous material, and the porous body 111 is integrated. The porous body is formed by sintering stainless steel, the stainless steel is formed into a desired shape, and sintered, whereby it can be easily formed. Further, since the porous system is integrated, it is not necessary to connect the receiving surface and the side surface of the porous body, so that the gas supplied from the connecting portion to the gas supply chamber 112 is not discharged. For the porous material, in addition to the above stainless steel, porous carbon or the like can also be used.
又，較好的是多孔質材料之細孔直徑均勻。藉由使細孔直徑大致均勻，而使懸浮之預成型坯穩定，從而可以製造形狀均勻之預成型坯。具體而言，較好的是在自細孔直徑之容積基準(volume basis)之眾數徑的-50%至+50%之細孔 直徑之範圍內，所包含之細孔容積為80%以上。藉由使細孔直徑處於上述範圍內，可以使細孔直徑變得大致均勻，懸浮之預成型坯穩定，從而可以製造形狀均勻之預成型坯。為獲得上述效果，更好的是在自容積基準(volume basis)之眾數徑之-45%至+45%之細孔直徑的範圍內，所包含之細孔容積為80%以上，最好的是在自容積基準(volume basis)之眾數徑之-40%至+40%之細孔直徑的範圍內，所包含之細孔容積為80%以上。繼而，對於本發明之實施例之多孔質體而言，在自容積基準(volume basis)之眾數徑之-34.7%至+34.8%之細孔直徑的範圍內所包含之細孔容積為81.7%。Further, it is preferred that the porous material has a uniform pore diameter. The preform having a uniform shape can be produced by making the diameter of the pores substantially uniform to stabilize the suspended preform. Specifically, it is preferably a pore of -50% to +50% of the mode diameter from the volume basis of the pore diameter. The pore volume contained in the diameter range is 80% or more. By making the pore diameter within the above range, the pore diameter can be made substantially uniform, and the suspended preform can be stabilized, whereby a preform having a uniform shape can be produced. In order to obtain the above effects, it is more preferable that the pore volume contained in the range of -45% to +45% of the pore diameter of the volume basis is 80% or more, preferably. The pore volume included in the pore diameter of -40% to +40% of the mode diameter on the volume basis is 80% or more. Further, in the porous body of the embodiment of the present invention, the pore volume contained in the range of the pore diameter of from -34.7% to +34.8% of the mode diameter on the volume basis is 81.7. %.
利用汞細孔計來測定多孔質材料之細孔直徑。對於細孔容積而言，使用水銀之壓入量。根據壓入水銀時所施加之壓力，使用Washburn公式來計算出細孔徑。對於眾數徑而言，使用以細孔之容積(體積)為基準而獲得之值。The pore diameter of the porous material was measured using a mercury pore meter. For the pore volume, the amount of mercury intrusion is used. The Washburn formula was used to calculate the pore size based on the pressure applied when mercury was pressed. For the mode diameter, a value obtained based on the volume (volume) of the pores is used.
又，較好的是多孔質材料之細孔直徑之眾數徑處於10μm以上400μm以下之範圍。眾數徑之上限值較好的是400μm以下，更好的是60μm以下，最好的是35μm以下。藉由使眾數徑之上限值處於上述範圍，懸浮之預成型坯姿勢穩定，從而可以獲得良好之玻璃。又，較好的是眾數徑之下限值為10μm以上，更好的是12μm以上，最好的是15μm以上。藉由使眾數徑之下限值處於上述範圍，易於噴出懸浮所必須之氣體，且不易對氣體之壓送施加過量之負荷。Further, it is preferable that the mode diameter of the pore diameter of the porous material is in the range of 10 μm or more and 400 μm or less. The upper limit of the mode diameter is preferably 400 μm or less, more preferably 60 μm or less, and most preferably 35 μm or less. By setting the upper limit of the mode diameter to the above range, the suspended preform posture is stabilized, and a good glass can be obtained. Further, it is preferable that the lower limit of the mode diameter is 10 μm or more, more preferably 12 μm or more, and most preferably 15 μm or more. By setting the lower limit of the mode diameter to the above range, it is easy to eject the gas necessary for the suspension, and it is difficult to apply an excessive load to the pressure feed of the gas.
繼而，較好的是多孔質體之氣孔率為50%以下。進而，較好的是將上限值設為40%，最好的是設為30%。又，較好的是下限值為10%，更好的是12%，最好的是15%。通過使氣孔率處於上述範圍，易於噴出懸浮所必須之氣體，且不易對氣體之壓送施加過量之負荷。Then, it is preferred that the porosity of the porous body is 50% or less. Further, it is preferred to set the upper limit to 40%, and preferably to 30%. Further, it is preferred that the lower limit is 10%, more preferably 12%, and most preferably 15%. By setting the porosity to the above range, it is easy to eject the gas necessary for the suspension, and it is difficult to apply an excessive load to the gas pressure.
此處，根據下式來表示氣孔率。Here, the porosity is expressed by the following formula.
氣孔率(%)＝(真密度－容積密度)/真密度×100對於真密度、容積密度而言，使用由汞細孔計而獲得之值。Porosity (%) = (true density - bulk density) / true density × 100 For true density and bulk density, a value obtained by a mercury pore meter is used.
又，對成形模11中之除了承接面以外之面實施塞孔處理。對於塞孔處理而言，較好的是選自由利用液狀組成物來堵塞氣孔並使上述氣孔硬化之處理、利用電漿噴散來堵塞氣孔之處理、利用CVD來堵塞氣孔之處理、利用電鍍處理來堵塞氣孔之處理所組成之群之處理。上述處理中，尤其利用電鍍處理，僅浸在電鍍液中進行處理即可，容易加工。又，使電鍍層變薄，藉此可以減輕裝置之重量。對於上述電鍍處理而言，較好的是電鍍Cr。Further, a plugging process is performed on the surface other than the receiving surface of the forming mold 11. The plugging treatment is preferably selected from the group consisting of a treatment for blocking pores by a liquid composition and curing the pores, a treatment for blocking pores by plasma spray, a treatment for blocking pores by CVD, and a plating treatment. The treatment of the group consisting of processing to block the pores. In the above treatment, in particular, it is possible to perform processing by immersing only in a plating solution by a plating treatment, and it is easy to process. Further, the plating layer is made thinner, whereby the weight of the device can be reduced. For the above plating treatment, it is preferred to plate Cr.
又，如圖3所示，在與成形模11之固定器17接合之接合部之外徑上，具有可以旋接之外螺紋部，且在與固定器17之成形模11接合之接合部之內徑上，具有可以旋接之內螺紋部。在上述外螺紋部、內螺紋部旋接之狀態下，保持成形模11以及固定器17。藉此，可以提高成形模11與固定器17之密著性，因此可以製造所供給之氣體不會自成形模11與固定器17之接合部洩漏之預成型坯。Further, as shown in Fig. 3, on the outer diameter of the joint portion to which the holder 17 of the forming mold 11 is joined, there is a joint portion which can be screwed to the outer thread portion and joined to the forming mold 11 of the holder 17. On the inner diameter, there is an internal threaded portion that can be screwed. The forming die 11 and the holder 17 are held in a state in which the male screw portion and the female screw portion are screwed together. Thereby, the adhesion between the molding die 11 and the holder 17 can be improved, so that the preform in which the supplied gas does not leak from the joint portion between the forming die 11 and the holder 17 can be manufactured.
又，固定器17連接連結管15，上述連結管15與設在成形模11內部之氣體供給室112連通。若經由上述連結管15以及固定器17，向氣體供給室112供給空氣或惰性氣體等氣體，則上述氣體經由多個微細孔而自承接面114向外部噴出。Further, the holder 17 is connected to the connection pipe 15, and the connection pipe 15 communicates with the gas supply chamber 112 provided inside the molding die 11. When a gas such as air or an inert gas is supplied to the gas supply chamber 112 via the connecting pipe 15 and the holder 17, the gas is discharged from the receiving surface 114 to the outside through a plurality of fine holes.
繼而，對於供給至成形模11之氣體而言，只要為不與玻璃成分反應之氣體，則可以不加特別限定地使用，但較好的是使用空氣、惰性氣體。對於惰性氣體而言，可以列舉氮、氬、氦等。Then, the gas supplied to the molding die 11 is not particularly limited as long as it is a gas that does not react with the glass component, but it is preferred to use air or an inert gas. Examples of the inert gas include nitrogen, argon, helium, and the like.
圖4係第二實施形態之成形模11A之示意剖面圖。與第一實施形態之成形模11相同，成形模11A具有承接住熔融玻璃之承接面114A。又，成形模11A呈在內部具有氣體供給室112A之箱狀，且由多孔質體111A而形成，上述多孔質體111A由多孔質材料而形成。未在成形模11A之除了承接面114A以外之面上設置電鍍層，此方面與第一實施形態之成形模11不同。與第一實施形態相同，在第二實施形態之成形模11A中，如圖1所示，在玻璃成形裝置10之入口具有作為淨化機構之過濾器18，因此可以使成形之玻璃成形品為混入較少雜質之玻璃成形品。Fig. 4 is a schematic cross-sectional view showing a molding die 11A of the second embodiment. Similarly to the molding die 11 of the first embodiment, the molding die 11A has a receiving surface 114A that receives the molten glass. Further, the molding die 11A has a box shape having a gas supply chamber 112A therein, and is formed of a porous body 111A, and the porous body 111A is formed of a porous material. The plating layer is not provided on the surface other than the receiving surface 114A of the molding die 11A, and is different from the molding die 11 of the first embodiment. As in the first embodiment, in the molding die 11A of the second embodiment, as shown in Fig. 1, the filter 18 as a purifying mechanism is provided at the inlet of the glass forming apparatus 10, so that the formed glass molded article can be mixed. A glass molded article with less impurities.
其次，一面參照圖2、3以及圖5、6，一面說明使用了上述玻璃成形裝置之本發明之玻璃成形方法。本發明之玻璃成形方法使熔融玻璃成形為玻璃，且包括：流下步驟，其使熔融玻璃流下；熔融玻璃塊成形步驟，其一面僅自可以使氣體通過之成形模之承接面噴出氣體，一面在成形模之承接面上承接住上述已流下之熔融玻璃，使熔融玻璃塊成形；以及冷卻步驟，其使上述熔融玻璃塊冷卻，使玻璃成形。Next, the glass forming method of the present invention using the above glass forming apparatus will be described with reference to Figs. 2, 3 and Figs. The glass forming method of the present invention forms the molten glass into glass, and includes a step of flowing down the molten glass, and a step of forming the molten glass block, one side of which only ejects gas from the receiving surface of the forming die through which the gas passes, while The molten surface of the molten mold is formed by receiving the molten glass that has flowed down on the receiving surface of the forming mold, and a cooling step of cooling the molten glass to form the glass.
將氣體自連結管15供給至氣體供給室112中，並使氣體自成形模11之承接面114之表面噴出。在上述狀態下，使熔融玻璃自流下裝置33流下，在承接面114上承接住上述熔融玻璃。上述熔融玻璃浮游在承接面114上並受到保持，如圖5所示，途中部分之中間變細且緩慢變細。一旦熔融玻璃達到固定重量，則變細之途中部分之中間變細部分因表面張力而斷開，從而可以獲得熔融玻璃塊。The gas is supplied from the connecting pipe 15 to the gas supply chamber 112, and the gas is ejected from the surface of the receiving surface 114 of the forming die 11. In the above state, the molten glass flows down from the downflow device 33, and the molten glass is received on the receiving surface 114. The molten glass floats on the receiving surface 114 and is held. As shown in Fig. 5, the middle portion of the entrained portion becomes thinner and becomes thinner. Once the molten glass reaches a fixed weight, the intermediate tapered portion of the portion on the way of thinning is broken by the surface tension, so that a molten glass lump can be obtained.
當熔融玻璃塊落在成形模11之承接面114上之後，成形模11立即在如圖2所示之旋轉台12上移動。在上述成形模11移動之同時，使另一個空成形模11移至流下裝置33之下方，以準備下一個熔融玻璃之流下。After the molten glass lump falls on the receiving surface 114 of the forming die 11, the forming die 11 is immediately moved on the rotary table 12 as shown in FIG. While the above-described forming die 11 is being moved, the other empty forming die 11 is moved below the downflow device 33 to prepare for the flow of the next molten glass.
保持在承接面114上之熔融玻璃塊，利用自承接面114噴出之氣體，使熔融玻璃得至均質化，而且在旋轉台12上移動之期間，使熔融玻璃冷卻至軟化點以下之溫度為止，使玻璃成形品成形。利用噴出之氣體來使熔融玻璃塊成為浮游狀態，因此不會使熔融玻璃塊與成形模11之承接面114直接接觸而急冷。因此，可以高效地使精度極高之玻璃成形品成形，上述玻璃成形品之熔融玻璃與承接面114接觸之部分不會產生皺折等，且表面上無皺折等缺陷。進而，亦可以有效地防止熔融玻璃塊與承接面114熔接。The molten glass block held on the receiving surface 114 is made to homogenize the molten glass by the gas ejected from the receiving surface 114, and the molten glass is cooled to a temperature lower than the softening point while moving on the rotary table 12. The glass molded article is molded. Since the molten glass block is brought into a floating state by the gas to be ejected, the molten glass lump is not brought into direct contact with the receiving surface 114 of the forming mold 11 to be quenched. Therefore, it is possible to efficiently form a glass molded article having an extremely high precision, and the molten glass of the glass molded article does not wrinkle or the like in contact with the receiving surface 114, and has no defects such as wrinkles on the surface. Further, it is also possible to effectively prevent the molten glass lump from being welded to the receiving surface 114.
在成形模11在旋轉台12上旋轉一周之途中，利用真空吸附機構等第1移載裝置40，將已成形之玻璃成形品搬運至下一步驟。其次，空成形模11再次移動至流下裝置33之下方，以用於下一個玻璃成形品之成形。重複上述步驟，可以高效地使玻璃成形品成形。While the molding die 11 is rotated one revolution on the rotary table 12, the formed glass molded article is conveyed to the next step by the first transfer device 40 such as a vacuum suction mechanism. Next, the empty forming die 11 is again moved below the downflow device 33 for the formation of the next glass molded article. By repeating the above steps, the glass molded article can be efficiently formed.
1．．．玻璃成形品製造裝置1. . . Glass molded product manufacturing device
10．．．玻璃成形裝置10. . . Glass forming device
11,11A．．．成形模11,11A. . . Forming die
12．．．旋轉台12. . . Rotary table
13．．．旋轉軸13. . . Rotary axis
14．．．送氣管14. . . Air supply tube
15．．．連結管15. . . Connecting tube
16．．．燃燒器16. . . burner
17．．．固定器17. . . Holder
18．．．過濾器18. . . filter
30．．．溶解裝置30. . . Dissolution device
31．．．熔融槽31. . . Melting tank
32．．．引導道32. . . Guide road
33．．．流下裝置33. . . Downflow device
40．．．第1移載裝置40. . . First transfer device
50．．．搬運裝置50. . . Handling device
111,111A．．．多孔質體111,111A. . . Porous body
112,112A．．．氣體供給室112, 112A. . . Gas supply room
113．．．電鍍層113. . . Plating
114,114A．．．承接面114,114A. . . Receiving surface
圖1係表示含有本發明之玻璃成形裝置之玻璃成形品製造裝置之構成的正視圖。Fig. 1 is a front elevational view showing the configuration of a glass molded article manufacturing apparatus including the glass forming apparatus of the present invention.
圖2係表示本發明之玻璃成形裝置之構成之立體圖。Fig. 2 is a perspective view showing the configuration of a glass forming apparatus of the present invention.
圖3係構成本發明之玻璃成形裝置之一部分之第一實施形態的成形模之示意剖面圖。Fig. 3 is a schematic cross-sectional view showing a molding die of a first embodiment which constitutes a part of the glass forming apparatus of the present invention.
圖4係第二實施形態之成形模之示意剖面圖。Figure 4 is a schematic cross-sectional view showing a molding die of a second embodiment.
圖5係表示使熔融玻璃自流下裝置流下至第一實施形態之成形模中之狀態之示意剖面圖。Fig. 5 is a schematic cross-sectional view showing a state in which molten glass is discharged from a downstream device into a molding die of the first embodiment.
圖6係表示使第一實施形態之成形模在旋轉臺上移動之狀態之示意剖面圖。Fig. 6 is a schematic cross-sectional view showing a state in which the molding die of the first embodiment is moved on a rotary table.
11．．．成形模11. . . Forming die
15．．．連結管15. . . Connecting tube
17．．．固定器17. . . Holder
111．．．多孔質體111. . . Porous body
112．．．氣體供給室112. . . Gas supply room
113．．．電鍍層113. . . Plating
114．．．承接面114. . . Receiving surface
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| JPH11171565A (en) * | 1997-12-05 | 1999-06-29 | Canon Inc | Production of glass gob for forming optical element |
| US6854289B2 (en) * | 2001-05-01 | 2005-02-15 | Hoya Corporation | Method of manufacturing glass gobs molded glass articles, and optical elements |
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| JP2002332354A (en) * | 2001-05-08 | 2002-11-22 | Jsr Corp | Aqueous dispersion, its preparation process and coated article |
| JP3830363B2 (en) * | 2001-07-03 | 2006-10-04 | Ｈｏｙａ株式会社 | Manufacturing method of glass molded product and manufacturing method of glass press molded product |
| JP3853622B2 (en) * | 2001-09-20 | 2006-12-06 | Ｈｏｙａ株式会社 | Manufacturing method of glass molded body, manufacturing method of press-molded product, manufacturing method of glass optical element, and manufacturing apparatus of glass molded body |
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| JPH11171565A (en) * | 1997-12-05 | 1999-06-29 | Canon Inc | Production of glass gob for forming optical element |
| US6854289B2 (en) * | 2001-05-01 | 2005-02-15 | Hoya Corporation | Method of manufacturing glass gobs molded glass articles, and optical elements |
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