JPH0388729A - Device for cutting molten glass flow - Google Patents
Device for cutting molten glass flowInfo
- Publication number
- JPH0388729A JPH0388729A JP22623789A JP22623789A JPH0388729A JP H0388729 A JPH0388729 A JP H0388729A JP 22623789 A JP22623789 A JP 22623789A JP 22623789 A JP22623789 A JP 22623789A JP H0388729 A JPH0388729 A JP H0388729A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- molten glass
- flow
- edges
- glass flow
- 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
- 239000006060 molten glass Substances 0.000 title claims abstract description 61
- 230000033001 locomotion Effects 0.000 claims description 7
- 239000011521 glass Substances 0.000 abstract description 22
- 230000008021 deposition Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 4
- 239000012634 fragment Substances 0.000 description 3
- -1 5KH51 Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000005304 optical glass Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 206010040925 Skin striae Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
- C03B7/10—Cutting-off or severing the glass flow with the aid of knives or scissors or non-contacting cutting means, e.g. a gas jet; Construction of the blades used
- C03B7/11—Construction of the blades
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、溶融ガラス流の切断装置、特にガラス食器、
ガラスビン、光学ガラスレンズ等を成形するのに好適な
溶融ガラス塊を作るための溶融ガラス流の切断装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cutting device for molten glass flow, especially glass tableware,
The present invention relates to a molten glass flow cutting device for producing molten glass lumps suitable for molding glass bottles, optical glass lenses, etc.
ガラス食器、ガラスビン、光学ガラスレンズ等を連続的
に成形する場合には、一般に、ガラス溶融炉の流出口（
オリフィス）から流出する溶融ガラス流を種々の手段に
よって切断して溶融ガラス塊（ガラスゴブ）を作り、こ
れを成形型等に導き、プレス底形あるいは他の成形方法
によって成形品を作る。When continuously molding glass tableware, glass bottles, optical glass lenses, etc., the outlet of the glass melting furnace (
The molten glass flow flowing out of the orifice is cut by various means to create a molten glass gob, which is introduced into a mold or the like to produce a molded product by press bottom molding or other molding methods.
前記の溶融ガラス流を切断するための切断装置は、一般
に、溶融ガラス流の両側に水平に設置された、刃先がＶ
字形をした一対の切断刃と、この切断刃を水平方向に前
進後退させる駆動装置とからなり、この駆動装置によっ
て切断刃を溶融ガラス流の両側から前進させて交叉させ
ることにより、溶融ガラス流を切断する。The cutting device for cutting the molten glass flow described above generally has a V-shaped cutting edge installed horizontally on both sides of the molten glass flow.
It consists of a pair of letter-shaped cutting blades and a drive device that moves the cutting blades forward and backward in the horizontal direction.By advancing the cutting blades from both sides of the molten glass flow and crossing them, the molten glass flow is disconnect.
この従来の切断装置の場合には、一対のＶ字状切断刃が
前進して互いに交叉して溶融ガラス流を切断するので、
交叉した切断刃の間の僅かな隙間に溶融ガラスが挾み込
まれ、−瞬のうちに硬化し、ガラス細片となる。このガ
ラス細片は大部分が刃先に付着し、切断刃が後退する時
および次の切断のため溶融ガラス流に進入するときに、
ガラス流の切断端からガラス塊内部に入り、その時にガ
ラス細片と共に取り込まれた空気が気泡となることによ
り、シャーマークと呼ばれる切断痕を生じる。In the case of this conventional cutting device, a pair of V-shaped cutting blades move forward and cross each other to cut the molten glass flow.
Molten glass is trapped in the small gap between the crossed cutting blades and instantly hardens into glass pieces. This glass sliver mostly adheres to the cutting edge and as the cutting blade retreats and enters the molten glass stream for the next cut.
When the glass stream enters the glass gob from the cut end, the air that is taken in along with the glass pieces becomes air bubbles, creating cut marks called shear marks.
このシャーマークはしばしば気泡を伴ったスジ状の痕跡
として成形具の表面に残り、時には切断刃が交叉すると
きにガラスの内部に折れ込んで脈理を形成する。These shear marks often remain as streak-like traces with air bubbles on the surface of the forming tool, and sometimes they fold into the interior of the glass when the cutting blades intersect, forming striae.
シャーマークが大きく、また深い場合には、食器やビン
等においてはその商品の外観を悪化させ、商品価値を低
下させる。また、光学レンズにおいてもこのようなシャ
ーマークは甚だ不都合なものであり、シャーマークが無
くなるまで研削、研磨が必要となる。これらの無駄を省
くためには、シャーマークを極力目立たなくするかまた
はシャーマークを無くすことが好ましい。If the shear mark is large and deep, it will deteriorate the appearance of the product, such as tableware or bottles, and reduce the product value. Furthermore, such shear marks are extremely inconvenient for optical lenses, and grinding and polishing are required until the shear marks are removed. In order to avoid these wastes, it is preferable to make the shear marks as inconspicuous as possible or eliminate them.
本発明は、上記欠点を除去するためになされたものであ
り、その目的は、シャーマークを顕著にさせる重要因子
である、切断時に発生するガラス細片の発生量を少なく
することにより、シャーマークを目立たなくすることが
できる溶融ガラス流の切断装置を提供することである。The present invention has been made to eliminate the above-mentioned drawbacks, and its purpose is to reduce the amount of glass fragments generated during cutting, which is an important factor that makes shear marks noticeable. It is an object of the present invention to provide a molten glass flow cutting device that can make the molten glass flow inconspicuous.
この目的を達成するため、水平に設けられた対向する一
対の切断刃と、この切断刃を溶融ガラス流の両側から溶
融ガラス流に向けて水平方向に前進させ、切断後溶融ガ
ラス流から離れるよう′に後退させる駆動装置とを備え
た、本発明による溶融ガラス流の切断装置は、両切断刃
の刃先が同一平面上に位置し、切断刃の前進、後退が同
一平面内の同一直線上にて行われるように駆動装置が構
成されていることを特徴とする。To achieve this purpose, a pair of horizontally opposed cutting blades is used, and the cutting blades are advanced horizontally from both sides of the molten glass stream toward the molten glass stream, and are moved away from the molten glass stream after cutting. In the molten glass flow cutting device according to the present invention, which is equipped with a drive device for retracting the molten glass flow, the cutting edges of both cutting blades are located on the same plane, and the cutting blades move forward and backward on the same straight line within the same plane. The drive device is configured to perform the following steps.
この場合、溶融ガラス流切断時に互いに当接する当り止
めが両刃先に形成されていることが望ましい。この当り
止めは刃先よりも水平方向に突き出ていることが好まし
い。In this case, it is desirable that both blade edges be provided with abutment stops that come into contact with each other when cutting the molten glass stream. It is preferable that this abutting stop protrude horizontally from the cutting edge.
更に、切断刃の前進運動を制限するための手段が切断刃
本体または駆動装置に設けられていることが望ましい。Furthermore, it is desirable that the cutting blade body or drive device be provided with means for limiting the forward movement of the cutting blade.
次に、図を参照して本発明の実施例を詳しく説明する。 Next, embodiments of the present invention will be described in detail with reference to the drawings.
第１図は、実施例による溶融ガラス流の切断装置を略示
している。第１図において、１は図示していないガラス
溶融炉に接続された流出パイプ、２は流出パイプから流
下した溶融ガラス流、３゜４は溶融ガラス流２を切断す
るための切断刃、５は切断された溶融ガラス塊、６は溶
融ガラス塊５を受ける型である。FIG. 1 schematically shows a cutting device for a stream of molten glass according to an embodiment. In FIG. 1, 1 is an outflow pipe connected to a glass melting furnace (not shown), 2 is a molten glass flow flowing down from the outflow pipe, 3.4 is a cutting blade for cutting the molten glass flow 2, and 5 is a cutting blade for cutting the molten glass flow 2. The cut molten glass gob 6 is a mold for receiving the molten glass gob 5.
切断刃３，４は向き合わせて水平に配置され、そして図
示していない駆動装置により、溶融ガラス流２の両側か
ら溶融ガラス流２に向けて水平方向に前進させられ（矢
印７参照）、切断後溶融ガラス流２から離れるように水
平方向に後退させられる（矢印８参照）。この駆動装置
の駆動源としては例えばエアシリンダ、油圧シリンダ、
モータ等が用いられ、この駆動源によって直接的にまた
は伝動機構を介して間接的に、切断刃３，４が往復運動
させられる。The cutting blades 3 and 4 are arranged horizontally facing each other, and are moved horizontally forward toward the molten glass stream 2 from both sides of the molten glass stream 2 by a drive device (not shown) (see arrow 7) to cut the molten glass. It is then retracted horizontally away from the molten glass stream 2 (see arrow 8). Examples of drive sources for this drive device include air cylinders, hydraulic cylinders,
A motor or the like is used, and the cutting blades 3, 4 are reciprocated by this drive source either directly or indirectly through a transmission mechanism.
切断刃３，４は第２ａ図に拡大して示すように、その刃
先３ａ、４ａが同一平面上に位置するように配置されて
いる。すなわち、溶融ガラス流２の切断時に、刃先３ａ
、４ａが交叉しないで互いに当接するように配置されて
いる。この場合、両刃先３ａ、４ａの上下方向のズレは
できるだけ小さくした方がよく、例えば３０μｍ以内が
好ましい。As shown in an enlarged view in FIG. 2a, the cutting blades 3 and 4 are arranged so that their cutting edges 3a and 4a are located on the same plane. That is, when cutting the molten glass flow 2, the cutting edge 3a
, 4a are arranged so as to abut each other without intersecting. In this case, it is better to make the vertical deviation between the cutting edges 3a and 4a as small as possible, preferably within 30 μm, for example.
刃先３ａ、４ａの角度θは小さい方が切れ味がよいが、
余り小さいと、刃先が欠けやすくなるので、１５〜４５
°、特に２０〜３０″が好ましい。刃先３ａ。The smaller the angle θ of the cutting edges 3a and 4a, the better the cutting quality.
If it is too small, the edge of the blade will easily break, so 15 to 45
°, especially preferably 20 to 30''. Cutting edge 3a.
４ａの厚さｈは第２ｂ図に示すように、薄い程ガラス細
片が生じにくいが、薄い程刃先が欠けやすくなるので、
刃先の厚さｈは０〜３０．！／ＩＩ＋の範囲とすること
が好ましい。As for the thickness h of 4a, as shown in Figure 2b, the thinner it is, the less likely glass fragments will occur, but the thinner it is, the more likely the cutting edge will be chipped.
The thickness h of the cutting edge is 0 to 30. ! /II+ is preferable.
切断刃３，４の材質としては、耐熱性および耐摩耗型に
優れ、機械的強度を持ったもの、例えば５ＫＨ５１など
の工具鋼、ステンレス鋼、耐熱鋼、超硬合金、セラくツ
クス等が好ましい、更には、切断刃３．４、特にその刃
先３ａ、４ａの酸化を防止するために、白金、金、ロジ
ウムおよびそれらの合金、および窒化チタンなどの耐酸
化性金属や、ＳｉＣ、Ｓｉ３Ｎ４、Ｚｒ０＝ などの
セラＱツクスを表面に被覆してもよい、更には、溶融ガ
ラスとの摩擦を少なくし、切断を容易にするために、切
断刃３゜４にカーボン、グラファイト、ダイヤモンド、
窒化ホウ素等を被覆してもよい。The material of the cutting blades 3 and 4 is preferably one that has excellent heat resistance, wear resistance, and mechanical strength, such as tool steel such as 5KH51, stainless steel, heat-resistant steel, cemented carbide, ceramics, etc. Furthermore, in order to prevent oxidation of the cutting blade 3.4, especially the cutting edges 3a and 4a, oxidation-resistant metals such as platinum, gold, rhodium and alloys thereof, and titanium nitride, SiC, Si3N4, Zr0 = The surface may be coated with Cera Qtx such as carbon, graphite, diamond, etc. to reduce friction with the molten glass and facilitate cutting.
It may also be coated with boron nitride or the like.
上記構造の切断装置による溶融ガラス流の切断は次のよ
うにして行われる。Cutting of the molten glass flow by the cutting device having the above structure is performed as follows.
流出パイプ１から流下した溶融ガラス流２は、流出パイ
プ１の下方に設置された型６で受けられ、所定の量に達
したところで、溶融ガラス流２の左右に水平に配置され
た切断刃３，４が駆動装置により溶融ガラス流２に向か
って前進駆動される。The molten glass flow 2 flowing down from the outflow pipe 1 is received by a mold 6 installed below the outflow pipe 1, and when it reaches a predetermined amount, cutting blades 3 are placed horizontally on the left and right sides of the molten glass flow 2. , 4 are driven forward toward the molten glass stream 2 by a drive device.
それによって、同一平面上に位置する刃先３ａ。Thereby, the cutting edges 3a are located on the same plane.
４ａが突き合わせられて停止し、溶融ガラス流２を切断
する。切断された溶融ガラス塊５は型６に受止められ、
型６と共に他の場所に移動させられ、空の新しい型６が
流出パイプ１の下方に設置されるかまたは溶融ガラス塊
５だけが他の場所に移動させられる。そして、前述の一
連の動作が再び繰り返される。4a abut against each other and stop, cutting the molten glass flow 2. The cut molten glass lump 5 is received by a mold 6,
Either the mold 6 and the mold 6 are moved to another location and a new empty mold 6 is installed below the outflow pipe 1, or only the molten glass gob 5 is moved to another location. The series of operations described above is then repeated again.
上述のように、溶融ガラス流切断時に、同一平面上に位
置する刃先３ａ、４ａを突き合わせて停止するようにし
たので、ガラス細片は刃先３ａ。As described above, when cutting the molten glass stream, the cutting edges 3a and 4a located on the same plane are brought into contact with each other and stopped, so that the glass slivers are cut by the cutting edge 3a.
４ａの間にごく微量生じるだけであり、従来のように切
断刃を交叉させて切断する場合と比べて、ガラス細片の
発生量および付着量が大幅に少なくなる。その結果、シ
ャーマークがほとんど目立たない高品質の成形品を成形
できる溶融ガラス塊が得られる。Only a very small amount is generated between 4a and the amount of glass fragments generated and adhered to is significantly reduced compared to the conventional cutting method in which the cutting blades cross each other. As a result, a molten glass lump that can be molded into a high-quality molded product with almost no noticeable shear marks is obtained.
第３図から第９図には、切断刃３，４の変形例が示しで
ある。3 to 9 show modified examples of the cutting blades 3, 4.
第３図の切断刃３Ａ、４Ａの場合には、溶融ガラス流切
断時に、刃先３ａ、４ａが当接によって摩耗および損傷
しやすいので、これを防止するために、刃先３ａ、４ａ
の両側に当り止め９．１０が形成されている。この当り
止め９．１０は溶融ガラス流切断時に互いに当接する、
刃先３ａ。In the case of the cutting blades 3A and 4A shown in FIG. 3, the cutting edges 3a and 4a are likely to be worn and damaged due to contact during molten glass flow cutting, so in order to prevent this, the cutting edges 3a and 4a are
Abutment stops 9 and 10 are formed on both sides. These abutting stops 9 and 10 abut each other during cutting of the molten glass flow,
Blade tip 3a.
４ａの先端面よりも非常に広い当接面を有する。It has a much wider contact surface than the tip end surface of 4a.
当り止め９．ｌＯは、第４図に示すように、刃先３ａ、
４ａから突出させることができる。しかし、突出量ｌが
大きすぎると、溶融ガラス流２の切断が困難になるので
、ｌは一般に０〜５０μｍ。Hit stop9. As shown in FIG. 4, lO is the cutting edge 3a,
It can be made to protrude from 4a. However, if the protrusion amount l is too large, it becomes difficult to cut the molten glass flow 2, so l is generally 0 to 50 μm.
好ましくは０〜１０μ−に選定される。Preferably it is selected from 0 to 10μ.
なお、前記の当り止め９．１０の代わりに、切断刃の前
進運動を制限するための手段を駆動装置または切断刃に
設けることができる。この場合、駆動装置の駆動源の動
き自体で前進運動を制御してもよいし、また切断装置の
適宜個所にストッパーを配置し、前進時にこのストッパ
ーに当接する突起を、駆動装置の駆動源または伝動機構
、あるいは切断刃に設けてもよい。It should be noted that instead of the abutment stop 9.10, the drive device or the cutting blade can be provided with means for limiting the forward movement of the cutting blade. In this case, the forward motion may be controlled by the movement of the drive source of the drive device itself, or a stopper may be placed at an appropriate location on the cutting device, and the protrusion that comes into contact with this stopper during forward movement may be controlled by the drive source of the drive device or It may be provided in the transmission mechanism or the cutting blade.
第５図と第６図に示す切断刃３Ｂ、４Ｂの場合には、刃
先３ａ、４ａが切断刃の支持部３ｂ。In the case of the cutting blades 3B and 4B shown in FIGS. 5 and 6, the cutting edges 3a and 4a are the support portions 3b of the cutting blades.
４ｂと別個に形成され、ねじ１１によって支持部３ｂ、
４ｂに固定されている。従って、この刃先３ａ、４ａは
摩耗または損傷した後、交換可能である。4b and is formed separately from the support part 3b by means of a screw 11;
4b. The cutting edges 3a, 4a can therefore be replaced after they become worn or damaged.
第７図（平面図）に示す切断刃３Ｃ，４Ｃの場合には、
刃先３ａ、４ａが切断刃の前進後退方向７．８に対して
斜めに形成されている。In the case of cutting blades 3C and 4C shown in Fig. 7 (plan view),
The cutting edges 3a, 4a are formed obliquely with respect to the forward and backward direction 7.8 of the cutting blade.
第８図と第９図に示す切断刃３Ｄ、４Ｄ；３Ｅ。Cutting blades 3D, 4D; 3E shown in FIGS. 8 and 9.
４Ｅの場合には、一方の刃先３ａが凹形に、他方の刃先
４ａが凸形に形成されている。第８図の切断刃３Ｄ、４
Ｄの刃先３ａ、４ａはくの字形をしており、第９図の切
断刃３Ｅ、４Ｅの刃先３ａ。In the case of 4E, one cutting edge 3a is formed in a concave shape, and the other cutting edge 4a is formed in a convex shape. Cutting blade 3D, 4 in Figure 8
The cutting edges 3a and 4a of D have a dogleg shape, and the cutting edges 3a of the cutting blades 3E and 4E in FIG.
４ａは弧状に形成されている。4a is formed in an arc shape.
以上、実施例について説明したが、本発明は上記実施例
に限定されるものではない。例えば、当り止め９，１０
を切断刃３，４と別体に作り、切断刃に固定してもよい
。この場合更に、当り止め９．１０を水平方向に調節可
能に切断刃に取付けるようにしてもよい。更に、切断刃
は、上記実施例と上下逆に、刃先３ａ、４ａの傾斜面が
下側に位置するように配置してもよい。更に、刃先３ａ
。Although the embodiments have been described above, the present invention is not limited to the above embodiments. For example, stopper 9,10
may be made separately from the cutting blades 3 and 4 and fixed to the cutting blade. In this case, it is also possible for the abutment 9.10 to be mounted horizontally adjustable on the cutting blade. Further, the cutting blades may be arranged upside down from the above embodiment, with the inclined surfaces of the cutting edges 3a, 4a located on the lower side. Furthermore, the cutting edge 3a
.
４ａは上下両面が傾斜するように形成してもよい。4a may be formed so that both upper and lower surfaces thereof are inclined.
更に、切断刃３，４の刃先３ａ、、４ａに付着したガラ
ス細片を、切断刃が後退したときに、気体、。Furthermore, when the cutting blades retreat, the glass particles adhering to the cutting edges 3a, 4a of the cutting blades 3, 4 are removed by gas.
液体、気液混合物などを噴射ノズルによって噴射するこ
とによって、あるいは掻き取り装置によって掻き取るこ
とによって、ガラス細片を除去するようにしてもよい。The glass particles may be removed by spraying a liquid, gas-liquid mixture, etc. with a spray nozzle or by scraping with a scraping device.
これによって、シャ・−マークを一層目立たなくするこ
とができる。This makes it possible to make the shadow mark even more inconspicuous.
以上説明したように、本発明では、溶融ガラス流切断時
に、切断刃を交叉させないで、突き合わせ停止して溶融
ガラス流を切断するようにしたので、シャーマークを顕
著にさせる重要因子であるガラス細片の発生量および付
着量を非常に少な（することができる、従って、シャー
マークのほと４゜
んど百立たない高品質の成形品を底形できる溶融ガラス
塊を得ることができる。刃先に設けた当り止めまたは切
断刃の前進運動を制限する手段は、刃先の摩耗や損傷を
防止することができるという利点がある。As explained above, in the present invention, when cutting a flow of molten glass, the cutting blades do not intersect, but stop at the butt to cut the flow of glass, which is an important factor in making shear marks noticeable. It is possible to produce a very small amount of pieces and the amount of adhesion. Therefore, it is possible to obtain a molten glass lump that can be used to form high-quality molded products with almost no shear marks. Cutting edge An abutment stop or a means for restricting the forward movement of the cutting blade has the advantage of preventing wear and damage to the cutting edge.
第１図は本発明の実施例による溶融ガラス流切断装置の
概略縦断面、第２ａ図および第２ｂ図は第１図に示した
切断刃の拡大縦断面図、第３図から第９図までは切断刃
の変形例を示す図であり、第３図は変形例の斜視図、第
４図は刃先を当り止めから少しだけ引っ込ませた、第３
図の切断刃と同様な切断刃を示す平面図、第５図は刃先
を交換可能に形成した切断刃の他の変形例を示す平面図
、第６図は第５図の切断刃の■−■線に沿った断面図、
第７図は斜めの刃先を有する切断刃の平面図、第８図と
第９図は凹形と凸形の刃先を有する切断刃の平面図であ
る。
１・・・流出パイプ、 ２・・・溶融ガラス流、３．
４；３Ａ、４Ａ；３Ｂ、４Ｂ；３Ｃ；４Ｃ；３Ｄ、４Ｄ
；３Ｅ、４Ｅ−−−切断刃、 ３ａ。
４ａ・・・刃先、 ３ｂ、４ｂ・・・支持部、５・・・
溶融ガラス塊、 ６・・・型、 ７・・・切断刃の前進
方向を示す矢印、 ８・・・切断刃の後退方向を示す矢
印、 ９．（０・・・当り止め、 １１・・・ねじ、
θ・・・刃先の角度、ｌ・・・当り止めと刃先の間隔、
ｈ・・・刃先の厚さFIG. 1 is a schematic longitudinal section of a molten glass flow cutting device according to an embodiment of the present invention, FIGS. 2a and 2b are enlarged longitudinal sectional views of the cutting blade shown in FIG. 1, and FIGS. 3 to 9. 3 is a perspective view of the modified example, and FIG. 4 is a diagram showing a modified example of the cutting blade, and FIG.
A plan view showing a cutting blade similar to the cutting blade shown in the figure, FIG. 5 is a plan view showing another modification of the cutting blade in which the cutting edge is formed to be replaceable, and FIG. 6 is a plan view of the cutting blade shown in FIG. 5. ■Cross-sectional view along the line,
FIG. 7 is a plan view of a cutting blade with an oblique cutting edge, and FIGS. 8 and 9 are plan views of a cutting blade with concave and convex cutting edges. 1... Outflow pipe, 2... Molten glass flow, 3.
4; 3A, 4A; 3B, 4B; 3C; 4C; 3D, 4D
;3E, 4E---cutting blade, 3a. 4a...Blade tip, 3b, 4b...Support part, 5...
Molten glass lump, 6... Mold, 7... Arrow indicating the forward direction of the cutting blade, 8... Arrow indicating the retreating direction of the cutting blade, 9. (0...stop, 11...screw,
θ: Angle of the cutting edge, l: Distance between the stop and the cutting edge,
h...Thickness of the cutting edge
Claims (1)
断刃を溶融ガラス流の両側から溶融ガラス流に向けて水
平方向に前進させ、切断後溶融ガラス流から離れるよう
に後退させる駆動装置とを備えた溶融ガラス流の切断装
置において、 両切断刃の刃先が同一平面上に位置し、 切断刃の前進、後退が同一平面内の同一直線上にて行わ
れるように駆動装置が構成されていることを特徴とする
溶融ガラス流の切断装置。 ２、溶融ガラス流切断時に互いに当接する当り止めが両
刃先に形成されていることを特徴とする、請求項１記載
の溶融ガラス流の切断装置。 ３、当り止めが刃先よりも水平方向に突き出ていること
を特徴とする、請求項２記載の溶融ガラス流の切断装置
。 ４、切断刃の前進運動を制限するための手段が切断刃本
体または駆動装置に設けられていることを特徴とする、
請求項１記載の溶融ガラス流の切断装置。[Scope of Claims] 1. A pair of horizontally disposed opposing cutting blades, which are advanced horizontally from both sides of the molten glass stream toward the molten glass stream, and are separated from the molten glass stream after cutting. In a molten glass flow cutting device equipped with a drive device that moves the cutting blade backward, the cutting edges of both cutting blades are located on the same plane, and the cutting blades move forward and backward on the same straight line within the same plane. A cutting device for cutting a flow of molten glass, characterized in that a driving device is configured as follows. 2. The molten glass flow cutting device according to claim 1, characterized in that both blade edges are provided with abutment stops that come into contact with each other when cutting the molten glass flow. 3. The molten glass flow cutting device according to claim 2, wherein the abutment stop projects horizontally beyond the cutting edge. 4. Means for restricting the forward movement of the cutting blade is provided on the cutting blade body or the drive device,
The molten glass flow cutting device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22623789A JP2509341B2 (en) | 1989-08-31 | 1989-08-31 | Molten glass flow cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22623789A JP2509341B2 (en) | 1989-08-31 | 1989-08-31 | Molten glass flow cutting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0388729A true JPH0388729A (en) | 1991-04-15 |
| JP2509341B2 JP2509341B2 (en) | 1996-06-19 |
Family
ID=16842042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22623789A Expired - Lifetime JP2509341B2 (en) | 1989-08-31 | 1989-08-31 | Molten glass flow cutting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2509341B2 (en) |
-
1989
- 1989-08-31 JP JP22623789A patent/JP2509341B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2509341B2 (en) | 1996-06-19 |
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