JPH09328321A - Bottom metallic force for forming glass - Google Patents
Bottom metallic force for forming glassInfo
- Publication number
- JPH09328321A JPH09328321A JP16835396A JP16835396A JPH09328321A JP H09328321 A JPH09328321 A JP H09328321A JP 16835396 A JP16835396 A JP 16835396A JP 16835396 A JP16835396 A JP 16835396A JP H09328321 A JPH09328321 A JP H09328321A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- lower mold
- parts
- recess
- glass product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、底面に凸部を有するガ
ラス製品をプレス成形によって製造するためのガラス成
形用下金型に関し、特に底面に複数の支持脚を有する高
周波加熱装置用受皿を製造するのに好適なガラス成形用
下金型に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass molding lower mold for producing a glass product having a convex portion on the bottom surface by press molding, and more particularly to a saucer for a high frequency heating device having a plurality of supporting legs on the bottom surface. The present invention relates to a lower mold for glass molding suitable for manufacturing.
【０００２】[0002]
【従来の技術】一般にガラス製品をプレス成形によって
製造する場合、所定形状のプレス面を有する下金型内に
溶融ガラスゴブを落下させた後、上金型を降下させてガ
ラスを押圧する方法が採られる。2. Description of the Related Art Generally, when manufacturing glass products by press molding, a method is used in which a molten glass gob is dropped into a lower mold having a pressing surface of a predetermined shape and then the upper mold is lowered to press the glass. To be
【０００３】ところでガラス製品には、様々な形状を有
するものが存在するが、例えば高周波加熱装置用受皿の
ように底面に支持脚となる凸部を有するガラス製品をプ
レス成形によって製造する場合には、下金型のプレス面
の所定箇所にガラス製品の凸部を形成するための凹部を
設ける必要がある。There are various glass products having various shapes. For example, when a glass product having a convex portion serving as a supporting leg on the bottom is manufactured by press molding, such as a saucer for a high-frequency heating device. It is necessary to provide a concave portion for forming a convex portion of the glass product at a predetermined position on the pressing surface of the lower mold.
【０００４】しかしながらこのような凹部を有する下金
型内に、溶融ガラスゴブを落下させ、上金型で押圧する
と、凹部内に空気が封じ込まれ、ガラスが凹部全体に充
填されなかったり、ガラス表面に皺が発生したりするこ
とがあり、このようなガラス製品は不良品となる。However, when the molten glass gob is dropped into the lower mold having such a recess and pressed by the upper mold, air is trapped in the recess and the entire recess is not filled with glass, or the glass surface is not filled. Wrinkles may occur on the glass, and such a glass product becomes a defective product.
【０００５】このような問題を解消するため、下金型の
凹部内から底面にかけて空気抜き孔を穿設し、下金型内
に溶融ガラスゴブを落下させ、上金型を降下させて押圧
したとき、凹部内の空気を空気抜き孔から排出し、これ
によって凹部内における空気の封じ込めを防止する方法
が採られている。In order to solve such a problem, an air vent hole is formed from the concave portion of the lower mold to the bottom surface thereof, and when the molten glass gob is dropped into the lower mold and the upper mold is lowered and pressed, A method is adopted in which the air in the recess is discharged from the air vent hole to prevent the air from being contained in the recess.
【０００６】[0006]
【発明が解決しようとする課題】上記した下金型の凹部
内に穿設される空気抜き孔の直径は、約０．３ｍｍであ
るが、このような下金型を用いて溶融ガラスゴブをプレ
ス成形すると、ガラスが凹部のみならず、空気抜き孔に
まで若干充填されることがある。The diameter of the air vent hole formed in the recess of the lower mold is about 0.3 mm, and a molten glass gob is press-molded using such a lower mold. Then, not only the concave portion but also the air vent hole may be slightly filled with the glass.
【０００７】空気抜き孔にガラスが充填された状態で冷
却されると、図３に示すようにガラス製品１０の凸部１
０ａの頂部に小突起１０ｂが形成されることになり、こ
のような小突起１０ｂに機械的衝撃が加わると、ガラス
製品１０に欠けが発生しやすい。When cooled in a state where the air vent hole is filled with glass, as shown in FIG.
A small protrusion 10b is formed on the top of the glass plate 0a, and when a mechanical shock is applied to such a small protrusion 10b, the glass product 10 is likely to be chipped.
【０００８】特に高周波加熱装置用受皿の場合、底面に
形成される複数個の支持脚の頂部に小突起が形成される
ことになり、この小突起は高周波加熱装置や受皿を載置
するテーブルを傷付けたり、ガタつきの原因となるた
め、致命的な製品欠陥となる。Particularly, in the case of the saucer for the high-frequency heating device, small projections are formed on the tops of the plurality of support legs formed on the bottom surface, and these small projections are used for the table on which the high-frequency heating device and the saucer are placed. It causes scratches and rattling, which is a fatal product defect.
【０００９】またこのような小突起は、研削することに
よって取り除くことは可能であるが、研削工程を増やす
ことは、生産コストの上昇につながるため好ましくな
い。Although such small protrusions can be removed by grinding, increasing the number of grinding steps is not preferable because it leads to an increase in production cost.
【００１０】本発明は、上記事情に鑑みなされたもので
あり、プレス面の所定箇所に凹部を形成し、この凹部内
に空気抜き孔を穿設しても、得られたガラス製品の凸部
の頂部に小突起が形成されることがないガラス成形用下
金型を提供することを目的とするものである。The present invention has been made in view of the above circumstances, and even if a concave portion is formed at a predetermined position on the pressing surface and an air vent hole is formed in the concave portion, the convex portion of the obtained glass product is An object of the present invention is to provide a lower mold for glass molding, in which small protrusions are not formed on the top.
【００１１】[0011]
【課題を解決するための手段】すなわち本発明のガラス
成形用下金型は、プレス面の所定箇所に凹部を有するガ
ラス成形用下金型であって、該凹部の底面に突起部が形
成され、該突起部に空気抜き孔が穿設されてなることを
特徴とする。That is, the lower mold for glass molding of the present invention is a lower mold for glass molding having a recess at a predetermined position on the pressing surface, and a protrusion is formed on the bottom surface of the recess. The air vent hole is formed in the protrusion.
【００１２】また本発明のガラス成形用下金型は、高周
波加熱装置用受皿を成形するために用いられることを特
徴とする。The lower mold for glass molding of the present invention is characterized in that it is used for molding a saucer for a high-frequency heating device.
【００１３】[0013]
【作用】本発明のガラス成形用下金型は、凹部の底面に
突起部が形成され、この突起部に空気抜き孔が穿設され
てなるため、この下金型内に溶融ガラスゴブを落下さ
せ、上金型を降下させて押圧すると、凹部内の空気が空
気抜き孔から排出されるため、凹部内に空気が封じ込ま
れることがなく、しかも空気抜き孔にまでガラスが充填
されてガラス製品に小突起が形成されても、この小突起
は凸部の頂部に形成されることはない。In the lower mold for glass molding of the present invention, since the projection is formed on the bottom surface of the recess and the air vent hole is formed in the projection, the molten glass gob is dropped into the lower mold, When the upper mold is lowered and pressed, the air in the recess is discharged from the air vent hole, so that the air is not trapped in the recess, and the glass is filled even in the air vent hole so that the glass product has a small protrusion. Even if the ridges are formed, the small protrusions are not formed on the tops of the protrusions.
【００１４】すなわち本発明の下金型を用いて作製され
たガラス製品は、底面に形成される凸部の頂部にくぼみ
を有しており、空気抜き孔によって形成される小突起
は、このくぼみの中に形成されるからである。That is, the glass product produced by using the lower mold of the present invention has an indentation at the top of the convex portion formed on the bottom surface, and the small projection formed by the air vent hole has the indentation. Because it is formed inside.
【００１５】従って本発明のガラス製品は、小突起に機
械的衝撃が加わることがほとんど皆無であるため、欠け
にくく、特に高周波加熱装置用受皿に用いた場合には、
小突起によって高周波加熱装置やテーブルを傷つけた
り、ガタつくこともない。Therefore, the glass product of the present invention hardly causes mechanical impact on the small protrusions, and thus is unlikely to be chipped. Especially when used in a saucer for a high frequency heating device,
The small protrusions do not damage or rattle the high-frequency heating device or the table.
【００１６】尚、ガラス製品の底面に形成される凸部に
形成されるくぼみが大きすぎると、凸部の強度が低下す
る虞れがあるため、本発明の下金型の凹部底面に形成す
る突起部の大きさは、所期の目的が達成できる必要最小
限の大きさに抑えなければならない。If the indentation formed in the convex portion formed on the bottom surface of the glass product is too large, the strength of the convex portion may be reduced. Therefore, the concave portion is formed on the bottom surface of the lower mold of the present invention. The size of the protrusion must be kept to the minimum necessary to achieve the intended purpose.
【００１７】[0017]
【実施例】以下、本発明のガラス成形用下金型を実施例
に基づいて詳細に説明する。EXAMPLES Hereinafter, the lower mold for glass molding of the present invention will be described in detail based on examples.
【００１８】図１は、本発明のガラス成形用下金型と上
金型を示す縦断面図であり、図２は、図１の要部拡大断
面図である。FIG. 1 is a vertical sectional view showing a lower mold and an upper mold for glass molding according to the present invention, and FIG. 2 is an enlarged sectional view of an essential part of FIG.
【００１９】図中、１０はガラス製品、１０ａはガラス
製品の凸部、１０ｂは小突起、１０ｃはガラス製品のく
ぼみ、１１ａ、１１ｂ、１１ｃは３分割された上金型、
１２は下金型、１２ａは下金型の凹部、１２ｂは下金型
の突起部、１２ｃは空気抜き孔を各々示している。In the figure, 10 is a glass product, 10a is a convex part of the glass product, 10b is a small projection, 10c is a recess of the glass product, and 11a, 11b and 11c are three divided upper molds,
Reference numeral 12 is a lower mold, 12a is a recess of the lower mold, 12b is a protrusion of the lower mold, and 12c is an air vent hole.
【００２０】上金型１１ａ〜１１ｃと下金型１２は、高
周波加熱装置用受皿を成形するためのものであり、各金
型１１ａ〜１１ｃ、１２は、ガラス製品１０の形状に合
わせたプレス面を有している。The upper molds 11a to 11c and the lower mold 12 are for molding a saucer for a high-frequency heating device, and each of the molds 11a to 11c and 12 has a pressing surface adapted to the shape of the glass product 10. have.
【００２１】また下金型１２のプレス面の所定箇所に
は、複数個の凹部１２ａが形成されており、これによっ
てガラス製品（高周波加熱装置用受皿）１０の底面に複
数個の凸部（支持脚）１０ａが形成されることになる。
さらに下金型１２の各凹部１２ａの底面には、突起部１
２ｂが形成されており、この突起部１２ｂの頂部には、
空気抜き孔１２ｃが穿設されている。Further, a plurality of concave portions 12a are formed at predetermined positions on the pressing surface of the lower die 12, and thereby a plurality of convex portions (supporting portions) are formed on the bottom surface of the glass product (saucepan for high frequency heating device) 10. The leg) 10a is formed.
Further, on the bottom surface of each recess 12a of the lower mold 12, the protrusion 1
2b is formed, and at the top of this protrusion 12b,
An air vent hole 12c is provided.
【００２２】尚、下金型１２の凹部１２ａの深さは、約
５ｍｍであり、また突起部１２ｂの高さは約０．５ｍｍ
であり、さらに空気抜き孔１２ｃの直径は、約０．３ｍ
ｍである。The depth of the recess 12a of the lower mold 12 is about 5 mm, and the height of the protrusion 12b is about 0.5 mm.
Further, the diameter of the air vent hole 12c is about 0.3 m.
m.
【００２３】このような金型１１ａ〜１１ｃ、１２を用
いて、まず下金型１２内に所定量の溶融ガラスゴブを落
下させた後、各上金型１１ａ〜１１ｃを同時に降下さ
せ、ガラスを押圧してから、上金型１１ａ〜１１ｃを上
昇させ、下金型１２からガラス製品１０を取り出した。Using these molds 11a to 11c and 12, first, a predetermined amount of molten glass gob is dropped into the lower mold 12, and then the upper molds 11a to 11c are simultaneously lowered to press the glass. After that, the upper molds 11a to 11c were raised, and the glass product 10 was taken out from the lower mold 12.
【００２４】こうして得られたガラス製品１０の底面に
形成された各凸部１０ａを観察したところ、それらの頂
部にはくぼみ１０ｃが形成され、各くぼみ１０ｃ内に小
突起１０ｂが形成されていた。Observation of the respective convex portions 10a formed on the bottom surface of the glass product 10 thus obtained revealed that the depressions 10c were formed at the tops thereof and the small protrusions 10b were formed in the respective depressions 10c.
【００２５】[0025]
【発明の効果】以上のように本発明のガラス成形用下金
型は、プレス面の所定箇所に形成された凹部の底面に突
起部が形成され、この突起部に空気抜き孔が穿設されて
いるため、プレス時に凹部内に空気が封じ込まれること
がなく、例えプレス時に空気抜き孔にガラスが充填され
ても、ガラス製品の凸部の頂部にへこみが形成され、こ
のへこみの中に小突起が形成されることになるため、小
突起に起因するガラス製品の欠けを防止することができ
る。As described above, in the lower mold for glass molding of the present invention, the protrusion is formed on the bottom surface of the recess formed at the predetermined position on the pressing surface, and the air vent hole is formed in this protrusion. As a result, air is not trapped in the recess during pressing, and even if the air vent hole is filled with glass during pressing, a dent is formed at the top of the convex portion of the glass product, and a small protrusion is present in this dent. Thus, the glass product can be prevented from being chipped due to the small protrusions.
【００２６】特にこの下金型を高周波加熱装置用受皿の
成形に用いた場合には、受皿の底面に形成される支持脚
の頂部に小突起が形成されることがないため、高周波加
熱装置やテーブルを傷付けたり、ガタつくのを防止する
こともできる。Particularly when this lower mold is used for molding a saucer for a high-frequency heating apparatus, since small projections are not formed on the tops of the supporting legs formed on the bottom surface of the saucer, the high-frequency heating apparatus and You can also prevent scratching or rattling the table.
【図１】本発明のガラス成形用下金型と上金型を示す縦
断面図である。FIG. 1 is a vertical sectional view showing a lower mold and an upper mold for glass molding of the present invention.
【図２】図１の要部拡大断面図である。FIG. 2 is an enlarged sectional view of a main part of FIG.
【図３】従来のガラス製品の要部断面図である。FIG. 3 is a cross-sectional view of a main part of a conventional glass product.
１０ ガラス製品 １０ａ ガラス製品の凸部 １０ｂ 小突起 １０ｃ ガラス製品のくぼみ １１ａ、１１ｂ、１１ｃ 上金型 １２ 下金型 １２ａ 下金型の凹部 １２ｂ 下金型の突起部 １２ｃ 空気抜き孔 10 glass product 10a convex part of glass product 10b small protrusion 10c recess of glass product 11a, 11b, 11c upper mold 12 lower mold 12a lower mold recess 12b lower mold protrusion 12c air vent hole
Claims (2)
ス成形用下金型であって、該凹部の底面に突起部が形成
され、該突起部に空気抜き孔が穿設されてなることを特
徴とするガラス成形用下金型。1. A lower mold for glass molding having a recess at a predetermined position on a pressing surface, wherein a projection is formed on the bottom of the recess, and an air vent hole is formed in the projection. Lower mold for glass molding.
用いられることを特徴とする請求項１記載のガラス成形
用下金型。2. The lower mold for glass molding according to claim 1, which is used for molding a saucer for a high-frequency heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16835396A JP3659437B2 (en) | 1996-06-06 | 1996-06-06 | Lower mold for glass molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16835396A JP3659437B2 (en) | 1996-06-06 | 1996-06-06 | Lower mold for glass molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09328321A true JPH09328321A (en) | 1997-12-22 |
| JP3659437B2 JP3659437B2 (en) | 2005-06-15 |
Family
ID=15866504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16835396A Expired - Fee Related JP3659437B2 (en) | 1996-06-06 | 1996-06-06 | Lower mold for glass molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3659437B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009120457A (en) * | 2007-11-19 | 2009-06-04 | Konica Minolta Opto Inc | Lower mold, production method for glass gob, and production method for glass molded article |
| JP2020158338A (en) * | 2019-03-26 | 2020-10-01 | 日本電気硝子株式会社 | Metal mold device and method of manufacturing glass article |
| CN113788602A (en) * | 2021-09-01 | 2021-12-14 | 安徽光智科技有限公司 | Aspheric glass lens molding method and mold pressing mold thereof |
-
1996
- 1996-06-06 JP JP16835396A patent/JP3659437B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009120457A (en) * | 2007-11-19 | 2009-06-04 | Konica Minolta Opto Inc | Lower mold, production method for glass gob, and production method for glass molded article |
| JP2020158338A (en) * | 2019-03-26 | 2020-10-01 | 日本電気硝子株式会社 | Metal mold device and method of manufacturing glass article |
| CN113788602A (en) * | 2021-09-01 | 2021-12-14 | 安徽光智科技有限公司 | Aspheric glass lens molding method and mold pressing mold thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3659437B2 (en) | 2005-06-15 |
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