JPS63236720A - Production of lenses for automobile lights - Google Patents
Production of lenses for automobile lightsInfo
- Publication number
- JPS63236720A JPS63236720A JP62072319A JP7231987A JPS63236720A JP S63236720 A JPS63236720 A JP S63236720A JP 62072319 A JP62072319 A JP 62072319A JP 7231987 A JP7231987 A JP 7231987A JP S63236720 A JPS63236720 A JP S63236720A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- bulges
- step part
- mold
- total weight
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title description 5
- 239000011521 glass Substances 0.000 claims abstract description 8
- 238000012805 post-processing Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 abstract description 6
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- C03B11/10—Construction of plunger or mould for making hollow or semi-hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は自動車用前照灯など自動車用灯具に用いる前面
レンズの＠過方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for manufacturing a front lens used in an automobile lamp such as an automobile headlamp.
〈従来の技術〉
この種レンズをガラス材を用いて成形する場合、レンズ
ステップ形成部分の肉厚をある程度厚目に形成しないと
瀉流れ（溶融ガラスの流れ）不良を来たし、レンズステ
ップ形成部分の肉厚が部分的に不足する不良が多発する
。その為に、従来の製造方法で・はレンズステップ形成
部分の肉厚をどうしても厚く（約５〜６ ｍ ）形成せ
ざるを得ず、するとレンズ全体の重量も嵩み軽量化が難
しいと共に、溶融ガラスの温度が高くなるため金型キャ
ビテイ面の劣化が著しく金型寿命が短くなる不具合があ
った。<Prior art> When molding this type of lens using a glass material, unless the wall thickness of the lens step forming part is made thicker to a certain extent, flow (flow of molten glass) will be poor and the lens step forming part will be There are many defects where the wall thickness is partially insufficient. For this reason, in conventional manufacturing methods, the thickness of the lens step forming part must be made thick (approximately 5 to 6 m), which increases the weight of the entire lens, making it difficult to reduce the weight. As the temperature of the glass increases, the mold cavity surface deteriorates significantly, resulting in a shortened mold life.
〈発明が解決しようとする問題点〉
本発明はこの様な従来の不具合に鑑みてなされたもので
あり、レンズステップ形成部分の肉厚を従来品より薄く
形成でき、その結果レンズ全体の軽量化並びに金型の長
寿命化を図ることが出来る灯具用レンズの製造方法を提
供せｌυとするものである。<Problems to be Solved by the Invention> The present invention has been made in view of these conventional problems, and the thickness of the lens step forming portion can be made thinner than that of conventional products, resulting in a reduction in the weight of the entire lens. It is also an object of the present invention to provide a method for manufacturing a lens for a lamp, which can extend the life of the mold.
〈問題点を解決するための手段〉
係る目的を達成する本発明灯具用レンズの製造方法は、
正面における縦横の長さの比が１：２以上のガラス製レ
ンズであって、該レンズのレンズステップ形成部分の外
縁に２つ以上のはみ出し部を同一体に突出成形させると
共に、これらはみ出し部の重囲をレンズ重置の５〜１５
％程度となし、該はみ出し部を後加工により除去するよ
うにした事を特徴としたものである。<Means for solving the problems> A method for manufacturing a lens for a lamp according to the present invention that achieves the above object is as follows:
A glass lens having a length-to-width ratio of 1:2 or more when viewed from the front, in which two or more protruding parts are molded into the same body on the outer edge of the lens step forming part, and these protruding parts are 5 to 15 of lens overlap
%, and the protruding portion is removed by post-processing.
〈実施例〉 以下、本発明実施例を図面に基づいて説明する。<Example> Embodiments of the present invention will be described below based on the drawings.
第１図は本発明に係るレンズＡを金型（図示せず）で成
型した状態の正面図を示し、第３図は最終製品としての
レンズＡを示す正面図である。FIG. 1 shows a front view of a lens A according to the present invention molded with a mold (not shown), and FIG. 3 is a front view of the lens A as a final product.
レンズΔは従来と同様、ガラス材を用いて金型でもって
所要大きさの正面略横艮矩形状をしたレンズステップ形
成部分１と周縁部２とを同一体に成形するが、そのレン
ズステップ形成部分１の縦長さＬｌと横長Ｌ２との比は
１：２以上に形成される。そして、レンズステップ形成
部分１の内面には所要のレンズステップ３が同一体に形
成され、外縁には２つ以上のはみ出し部４ａ、 ４ｂ、
・・・が同一体に突出成形される。As in the past, the lens Δ is formed by molding the lens step forming portion 1 and the peripheral edge portion 2, which have a substantially horizontal rectangular shape from the front of a required size, into one body using a mold using a glass material. The ratio of the vertical length Ll and the horizontal length L2 of the portion 1 is set to be 1:2 or more. A required lens step 3 is integrally formed on the inner surface of the lens step forming portion 1, and two or more protruding portions 4a, 4b are formed on the outer edge.
... are projected and molded into the same body.
はみ出し部４ａ、 ４ｂ、・・・は各はみ出し部４ａ、
４ｂ。The protruding parts 4a, 4b, . . . are each protruding part 4a,
4b.
・・・の合計重量がレンズＡの重量の５〜１５％程度と
なるように設定され、レンズＡの成型時にレンズステッ
プ形成部分１の外縁に２つ以上を、好ましくはコーナ一
部付近に互いに対称状に離して同一体に突出成形する。... are set so that the total weight is about 5 to 15% of the weight of lens A, and when molding lens A, two or more are placed on the outer edge of the lens step forming portion 1, preferably near a part of the corner. The parts are symmetrically separated and formed into the same body by protrusion molding.
即ち、図示実施例の場合、４つのはみ出し部４ａ、 ４
ｂ、 ４ｃ、 ４ｄをレンズステップ形成部分１の左右
縦辺部１ａ、 １ａ外縁のコーナ一部付近に上下２ケ所
に互いに対称状に配置突出成形させたが、図面上４ａか
ら４ｈまであるはみ出し部の内、４ａと４Ｃの２ケ所、
４ｂと４ｄの２ケ所、 ４ａと４ｄと４ｆと４ｇとの
４ケ所、或いは４Ｃと４ｈと４「と４ｇとの４ケ所、等
々種々の組合わせが可能であり、要はレンズステップ形
成部分１の外縁コーナ一部付近に２つ以上を互いに対称
状に配置させるものである。That is, in the illustrated embodiment, four protruding parts 4a, 4
b, 4c, and 4d are arranged and protruded symmetrically at two locations above and below near the left and right vertical sides 1a of the lens step forming portion 1, and a part of the outer edge of 1a, but the protruding portions from 4a to 4h in the drawing are Two of them, 4a and 4C,
Various combinations are possible, such as two locations 4b and 4d, four locations 4a, 4d, 4f, and 4g, or four locations 4C, 4h, 4", and 4g. Two or more are arranged symmetrically near a part of the outer edge corner of.
而して、これらはみ出し部４ａ、 ４ｂ、・・・は後加
工にてレンズＡから除去し、最終製品としてのレンズＡ
を成形する。These protruding parts 4a, 4b,... are removed from the lens A in post-processing, and the final product is the lens A.
to form.
〈発明の効果〉
本発明は斯様に、正面における縦横の長さの比が１：２
以上のガラス製レンズであって、該レンズのレンズステ
ップ形成部分の外縁に２つ以上のはみ出し部を同一体に
突出成形させると共に、これらはみ出し部の＠量をレン
ズｉｌｌの５〜１５％程度となし、該はみ出し部を後加
工により除去するようにしたので、金型での成型時にレ
ンズステップ形成部分の溶融ガラスの流れが良好となり
、従ってレンズステップ形成部分の肉厚（約３．５〜４
．５纏）を従来品（約５〜６履）より薄く形成でき、そ
の結果レンズ全体の＠ωを従来品より１５〜３０％程度
軽ω化できると共に、金型の寿命を長びかせることが出
来る。<Effects of the Invention> In this way, the present invention has a vertical and horizontal length ratio of 1:2 at the front.
In the above glass lens, two or more protruding parts are formed in the same body on the outer edge of the lens step forming part, and the amount of these protruding parts is about 5 to 15% of the lens ill. None, since the protruding part is removed by post-processing, the flow of molten glass in the lens step forming part is good during molding, and therefore the wall thickness of the lens step forming part (approximately 3.5 to 4
．． 5) can be formed thinner than conventional products (approximately 5 to 6 shoes), and as a result, the @ω of the entire lens can be reduced by about 15 to 30% compared to conventional products, and the life of the mold can be extended. I can do it.
よって、所期の目的を達成し得る。Therefore, the intended purpose can be achieved.
図面は本発明実施の−例を示し、第１図はレンズを金型
で成型した状態の正面図、第２図は第１図の（２）−（
２）線断面図、第３図はレンズからはみ出し部を除去し
た状態の正面図、第４図は第３図の（４）−（４）線断
面図である。
図中、Ａはレンズ、１はレンズステップ形成部分、４ａ
〜４ｈははみ出し部、である。The drawings show an example of carrying out the present invention, and FIG. 1 is a front view of a lens molded with a mold, and FIG. 2 is a view showing (2)-(
2) A line sectional view, FIG. 3 is a front view of the lens with the protruding portion removed, and FIG. 4 is a line sectional view taken along the line (4)-(4) in FIG. In the figure, A is the lens, 1 is the lens step forming part, 4a
~4h is the protruding part.
Claims (1)
ンズであって、該レンズのレンズステップ形成部分の外
縁に２つ以上のはみ出し部を同一体に突出成形させると
共に、これらはみ出し部の重量をレンズ重量の５〜１５
％程度となし、該はみ出し部を後加工により除去するよ
うにした事を特徴とする灯具用レンズの製造方法。A glass lens having a length-to-width ratio of 1:2 or more when viewed from the front, in which two or more protruding parts are molded into the same body on the outer edge of the lens step forming part, and these protruding parts are The weight is 5 to 15 of the lens weight.
%, and the protruding portion is removed by post-processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62072319A JPS63236720A (en) | 1987-03-25 | 1987-03-25 | Production of lenses for automobile lights |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62072319A JPS63236720A (en) | 1987-03-25 | 1987-03-25 | Production of lenses for automobile lights |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63236720A true JPS63236720A (en) | 1988-10-03 |
Family
ID=13485839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62072319A Pending JPS63236720A (en) | 1987-03-25 | 1987-03-25 | Production of lenses for automobile lights |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63236720A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109863347A (en) * | 2016-10-28 | 2019-06-07 | 株式会社东热 | Immersion-type burner heating device and molten metal keep furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60210533A (en) * | 1984-03-31 | 1985-10-23 | Toshiba Glass Co Ltd | Molding method of glass member |
-
1987
- 1987-03-25 JP JP62072319A patent/JPS63236720A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60210533A (en) * | 1984-03-31 | 1985-10-23 | Toshiba Glass Co Ltd | Molding method of glass member |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109863347A (en) * | 2016-10-28 | 2019-06-07 | 株式会社东热 | Immersion-type burner heating device and molten metal keep furnace |
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