JPH03297559A - Hard metal depositing device for saw blade - Google Patents
Hard metal depositing device for saw bladeInfo
- Publication number
- JPH03297559A JPH03297559A JP10248790A JP10248790A JPH03297559A JP H03297559 A JPH03297559 A JP H03297559A JP 10248790 A JP10248790 A JP 10248790A JP 10248790 A JP10248790 A JP 10248790A JP H03297559 A JPH03297559 A JP H03297559A
- Authority
- JP
- Japan
- Prior art keywords
- saw blade
- welding
- rod
- tip
- hard metal
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 17
- 238000000151 deposition Methods 0.000 title abstract 8
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 63
- 238000004021 metal welding Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000008021 deposition Effects 0.000 abstract 5
- 238000005520 cutting process Methods 0.000 description 4
- 229910001347 Stellite Inorganic materials 0.000 description 2
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000002316 cosmetic surgery Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Arc Welding In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、鋸の刃の先端に、硬質の金属を溶着するため
の鋸刃用硬質金属溶着装置に関するもので、特に溶着す
る硬質金属の供給量の安定性を改良した鋸刃用硬質金属
溶着装置に関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a saw blade hard metal welding device for welding hard metal to the tip of a saw blade. This invention relates to a hard metal welding device for saw blades that has improved stability of supply amount.
鋸の刃の先端は、耐久性を向上させるために、ステライ
トなどの硬質金属を溶着させる。この溶着作業は、鋸の
刃を位置決めし、硬質金属の材料を鋸の刃の先端に近付
け、刃と硬質金属の材料を同時に加熱することによって
行う。The tip of the saw blade is welded with a hard metal such as Stellite to improve durability. This welding operation is performed by positioning the saw blade, bringing the hard metal material close to the tip of the saw blade, and heating the blade and the hard metal material simultaneously.
この溶着作業を、自動的に連続して行う装置として、従
来より鋸刃用硬質金属溶着装置が知られている。A hard metal welding device for saw blades has been known as a device that automatically and continuously performs this welding operation.
例えば、実開昭６１．−１２５８５や実開昭６２−１１
．８１６３には、自動的に、鋸刃を送り、硬質金属を供
給し、加熱する工程を行う鋸刃用硬質金属溶着装置が開
示されている。For example, Utsukai Showa 61. -12585 and Utsukai Showa 62-11
．． No. 8163 discloses a hard metal welding device for saw blades that automatically feeds the saw blade, supplies hard metal, and heats the saw blade.
ところで、従来の鋸刃用硬質金属溶着装置は、とくに硬
質金属の溶着量を安定化させるのが困難で、調整がむず
かしいという課題があった。By the way, conventional hard metal welding devices for saw blades have a problem in that it is particularly difficult to stabilize the amount of hard metal welded, and adjustment is difficult.
この原因は、鋸刃の先端に、硬質金属の溶着ロッドを近
付け、加熱したときに、溶着ロッドの熔融状態が安定し
ないことにある。すなわち、溶着ロッドの熔融状態にば
らつきがあると、溶着ロッドの先端と鋸刃の位置の関係
もばらつきを生じるのである。The cause of this is that when a hard metal welding rod is brought close to the tip of the saw blade and heated, the molten state of the welding rod is not stabilized. That is, if there are variations in the melted state of the welding rod, there will also be variations in the positional relationship between the tip of the welding rod and the saw blade.
その結果、鋸刃の先端に溶着される硬質金属の量が安定
せず、溶着不良を発生していた。As a result, the amount of hard metal welded to the tip of the saw blade was unstable, resulting in poor welding.
本発明は、鋸刃への硬質金属の溶着量を安定化させるこ
とのできる鋸刃用硬質金属溶着装置を得ることを目的と
する。An object of the present invention is to obtain a hard metal welding device for saw blades that can stabilize the amount of hard metal welded to the saw blade.
本発明は、」二速の課題を解決するために、鋸刃を順次
送るための鋸刃送り手段と、鋸刃送り手段によって送ら
れる鋸刃に硬質金属からなる溶着ロッドを供給するロッ
ド供給手段と、鋸刃及びロッド供給手段によって供給さ
れる溶着ロッドを必要に応じて加熱し、溶着ロッドの一
部を鋸刃の先端に溶着する加熱手段と、鋸刃送り手段、
ロッド供給手段及び加熱手段を制御するための制御手段
を備えた、従来の鋸刃用硬質金属溶着装置において、溶
着を行う鋸刃の先端及びロッド供給手段によって供給さ
れる溶着ロッドの先端の位置関係を検出する検出手段を
備えており、検出手段によって検出した鋸刃の先端及び
溶着ロッドの位置関係が正常な場合に制御手段によって
、溶着の手順を進行させることを特徴とする鋸刃用硬質
金属溶着装置としたものである。In order to solve the two-speed problem, the present invention provides a saw blade feeding means for sequentially feeding saw blades, and a rod supplying means for feeding a welding rod made of hard metal to the saw blade fed by the saw blade feeding means. a heating means for heating the welding rod supplied by the saw blade and rod supply means as necessary to weld a part of the welding rod to the tip of the saw blade; a saw blade feeding means;
In a conventional saw blade hard metal welding device equipped with a control means for controlling a rod supply means and a heating means, the positional relationship between the tip of the saw blade performing welding and the tip of the welding rod supplied by the rod supply means A hard metal for a saw blade, comprising a detection means for detecting the welding rod, and a control means advances the welding procedure when the positional relationship between the tip of the saw blade and the welding rod detected by the detection means is normal. This is a welding device.
以上のように構成すれば、検出手段は、溶着ロッドの位
置と鋸刃の位置の関係を検出する。そうすると、仮に溶
着ロッドの先端の熔融状態にばらつきがあったとしても
、溶着ロッドの先端の位置と鋸刃の位置が正常な場合の
み溶着の動作が行われるため、溶着不良を起こすことは
ない。With the above configuration, the detection means detects the relationship between the position of the welding rod and the position of the saw blade. In this way, even if there is variation in the melting state of the tip of the welding rod, the welding operation is performed only when the position of the tip of the welding rod and the position of the saw blade are normal, so welding defects will not occur.
第１図は、本発明の実施例を示したものである。 FIG. 1 shows an embodiment of the invention.
１は、鋸刃である。鋸刃は、はぼ同一のピンチで、連続
した鋸刃の先端２を備えている。1 is a saw blade. The saw blade has a continuous saw blade tip 2 with a nearly identical pinch.
３は、鋸刃送り手段である。鋸刃送り手段３は、移動ベ
ース４と送りバー５から構成されている。3 is a saw blade feeding means. The saw blade feeding means 3 is composed of a moving base 4 and a feeding bar 5.
送りバー５は、回転軸６によって移動ベース４に取り付
けられている。移動ヘース４ば、制御信号端子Ｄ２に入
力される信号に従って、図示しない駆動手段により、矢
印７に示す方向に往復運動する。鋸刃１は、移動ヘース
４の１往復ごとに１つのピンチだけ送られる。The feed bar 5 is attached to the moving base 4 by a rotating shaft 6. The movable head 4 reciprocates in the direction shown by the arrow 7 by a drive means (not shown) in accordance with a signal input to the control signal terminal D2. The saw blade 1 is fed by one pinch per reciprocation of the moving head 4.
８は、ロッド供給手段である。９は、ステライトなどの
硬質金属によってできている溶着ロッドである。１０及
び１１は、供給ローラである。供給ローラ１０及び１１
ば、溶着ロッド９をはさむように配置されている。供給
ローラ１０及び１１は、制御信号端子Ｃ２に入力される
信号によって、図示しない回転駆動手段により回転運動
する。さらに溶着ロッド９ば、供給ローラ１０及び１１
の回転方向によって、鋸刃１に向かって前進し、または
鋸刃１から後退する。１２は、ロッドガイドである。ロ
ッドガイド１２は、中空の構造になっており、その中空
の中を溶着ロッド９が往復運動可能になっている。8 is a rod supply means. 9 is a welding rod made of hard metal such as stellite. 10 and 11 are supply rollers. Supply rollers 10 and 11
For example, they are arranged so as to sandwich the welding rod 9 therebetween. The supply rollers 10 and 11 are rotated by a rotation drive means (not shown) in response to a signal input to the control signal terminal C2. Furthermore, welding rod 9, supply rollers 10 and 11
Depending on the direction of rotation, it moves forward towards the saw blade 1 or retreats from the saw blade 1. 12 is a rod guide. The rod guide 12 has a hollow structure, and the welding rod 9 can reciprocate within the hollow.
ロッドガイド１２は、溶着ロッド９を所定の位置に案内
する。また、ロッドガイド１２ば、先端が熔融した溶着
ロッド９を、中空の穴に引き込むことにより、溶着ロッ
ド９の先端の部分の整形を行うロッド整形手段を兼ねて
いる。すなわち、熔融した溶着ロッド９の先端は、ロン
トガイド１２に引き込まれたときに、ロントガイド１２
の中空の穴とほぼ同一の太さに整形される。Rod guide 12 guides welding rod 9 to a predetermined position. The rod guide 12 also serves as rod shaping means for shaping the tip of the welding rod 9 by pulling the welding rod 9 whose tip is melted into the hollow hole. That is, when the tip of the melted welding rod 9 is drawn into the front guide 12,
It is shaped to be almost the same thickness as the hollow hole.
１３は、加熱手段である。加熱手段１３の先端１４は、
溶着を行なおうとする鋸刃１の特定の先端２の方向を向
いており、鋸刃の先端２と溶着ロッド９の先端を加熱す
るようになっている。加熱手段１３は、制御信号端子Ｂ
２に入力される信号に従って加熱動作を開始し、あるい
は停止する。13 is a heating means. The tip 14 of the heating means 13 is
It is directed toward a specific tip 2 of the saw blade 1 to be welded, and is designed to heat the tip 2 of the saw blade and the tip of the welding rod 9. The heating means 13 is connected to the control signal terminal B
The heating operation is started or stopped according to the signal inputted to 2.
１５は、検出手段である。検出手段１５には、一つは溶
着ロッド９に、他の一つが鋸刃１に接続された検出線１
６ 、１７が接続されている。検出手段１５は、検出線
１６ 、１７に電流を流すための電源手段としての電源
と、検出線１６ 、１７に流れる電流を検出する電流検
出手段を含んでいる。すなわち、検出￥ａ１６．１７に
は、溶着ロッド９と鋸刃ｌが接触したときに電流が流れ
、離れているときには、電流が流れないようになってい
る。検出手段１５の電源は、通常の直流電源でよい。検
出手段１５の電流検出手段は、直流電源に直列に接続し
たリレーでよい。即ち、溶着ロッド９と鋸刃２が接触し
たならば、回路が閉じて直流電源によって検出のための
リレーが動作するようにすればよい。15 is a detection means. The detection means 15 includes a detection wire 1, one of which is connected to the welding rod 9 and the other to the saw blade 1.
6 and 17 are connected. The detection means 15 includes a power source for passing current through the detection lines 16 and 17, and current detection means for detecting the current flowing through the detection lines 16 and 17. That is, a current flows through the detection a16.17 when the welding rod 9 and the saw blade l are in contact with each other, and no current flows when the welding rod 9 and the saw blade l are separated. The power source of the detection means 15 may be a normal DC power source. The current detection means of the detection means 15 may be a relay connected in series to a DC power source. That is, when the welding rod 9 and the saw blade 2 come into contact, the circuit is closed and the relay for detection is operated by the DC power supply.
１８は、制御手段である。制御手段１８は、Ａｌ。18 is a control means. The control means 18 is made of Al.
Ｂｌ、ＣＩ、Ｄｌなどの制御出力端子を備えている。制
御出力端子Ａ１Ｂ１．Ｃ１，ＤＩは、それぞれ端子Ａ２
．Ｂ２．Ｃ２，Ｄ２と接続される。It is equipped with control output terminals such as Bl, CI, and Dl. Control output terminal A1B1. C1 and DI are each terminal A2
．． B2. Connected to C2 and D2.
制御手段１８は、検出手段１５の検出結果にもとずいて
制御出力信号を出力する。The control means 18 outputs a control output signal based on the detection result of the detection means 15.
１９は、刃先整形手段である。刃先整形手段１９は、ベ
ース２０と押さえ２１から構成されている。ベース２０
は、溶着作業を行う鋸刃１の先端２を位置決めする作用
を兼ねている。押さえセ１は、上下シリンダー２２の先
端に取り付けられている。押さえ２１は、制御信号端子
Ａ２に入力される信号に応じて動作するシリンダー２２
の動作によって、ベース２０に対して前進及び後退の動
作を行う。ベース２０及び押さえ２１は、溶着の終わっ
た後、鋸刃１の先端２に溶着された硬質金属の刃先整形
を行う。19 is a cutting edge shaping means. The cutting edge shaping means 19 is composed of a base 20 and a presser 21. base 20
also has the function of positioning the tip 2 of the saw blade 1 for welding work. The presser plate 1 is attached to the tip of the upper and lower cylinders 22. The presser foot 21 is a cylinder 22 that operates according to a signal input to the control signal terminal A2.
The movement moves forward and backward relative to the base 20. After the welding is completed, the base 20 and the presser 21 shape the cutting edge of the hard metal welded to the tip 2 of the saw blade 1.
第２図、第３図及び第４図は、第１図に実施例として示
した鋸刃用硬質金属溶着装置の動作を示した図である。FIGS. 2, 3, and 4 are diagrams showing the operation of the hard metal welding apparatus for saw blades shown as an example in FIG. 1.
第２図は、動作の初期の段階であって、ロントガイド１
２に案内されて、溶着ロッド９が、鋸刃１の先端２に接
触している状態を示している。もし、ロッド９と鋸刃１
が接触していなければ、異常な状態として検出され、ロ
ッド９の供給量を調整して、接触するようにする。Figure 2 shows the initial stage of operation, where the front guide 1
2, the welding rod 9 is shown in contact with the tip 2 of the saw blade 1. If rod 9 and saw blade 1
If they are not in contact, it is detected as an abnormal state, and the supply amount of the rod 9 is adjusted to bring them into contact.
第３図は、加熱手段１３によって、鋸刃１の先端２と溶
着ロッド９の両方が加熱され、溶着ロッド９が溶けてい
る状態を示している。FIG. 3 shows a state in which both the tip 2 of the saw blade 1 and the welding rod 9 are heated by the heating means 13, and the welding rod 9 is melted.
第４図は、溶着が完了した段階を示している。FIG. 4 shows the stage when welding is completed.
鋸刃１の先端２には、押さえ２１が降下してきて、先端
２の整形を行う。一方、溶着ロッド９は、ロントガイド
１２の中に引き込まれており、熔融部分の刃先部分の刃
先整形が行われている。A presser 21 descends to the tip 2 of the saw blade 1 and shapes the tip 2. On the other hand, the welding rod 9 is drawn into the front guide 12, and the cutting edge of the melted portion is being shaped.
第５図は、硬質金属の溶着が完了した鋸刃１を示してお
り、２αは、まだ溶着が終わっていない先端を示し、２
３は溶着が終了した先端を示している。FIG. 5 shows the saw blade 1 with hard metal welding completed, 2α indicates the tip where welding is not yet completed, and 2
3 indicates the tip where welding has been completed.
なお、本発明の他の実施例としては、例えば、鋸刃１と
溶着ロッド９の先端の位置関係を検出する検出手段は、
電流が流れることを利用する他、光学的な手段を用いて
も可能である。すなわち、要は溶着ロッド９の先端の位
置が毎回はぼ同じ位置にあればよいのであるから、光の
透過によって溶着ロッド９を検出してもよい。In addition, as another embodiment of the present invention, for example, the detection means for detecting the positional relationship between the saw blade 1 and the tip of the welding rod 9 may be
In addition to utilizing the flow of current, it is also possible to use optical means. That is, since it is sufficient that the position of the tip of the welding rod 9 is approximately the same each time, the welding rod 9 may be detected by transmitting light.
本発明は、以上説明してきたように、溶着を行う鋸刃の
先端及び前記ロッド供給手段によって供給される溶着ロ
ッドの先端の位置関係を検出する検出手段を備え、この
検出手段によって検出した前記鋸刃の先端及び前記溶着
ロッドの位置関係が正常な場合に制御手段によって、溶
着の手順を進行させることを特徴とするものであるから
、鋸刃の先端に硬質金属を溶着する場合に、はぼ一定の
溶着量が得られ、安定した品質の鋸刃を得ることができ
る。As described above, the present invention includes a detection means for detecting the positional relationship between the tip of a saw blade that performs welding and the tip of a welding rod supplied by the rod supply means, and the detection means detects the Since the welding procedure is progressed by the control means when the positional relationship between the tip of the saw blade and the welding rod is normal, there are no problems when welding hard metal to the tip of the saw blade. A constant amount of welding can be obtained and a saw blade of stable quality can be obtained.
第１図は、本発明の実施例を示す構成説明図、第２図、
第３図、第４図はそれぞれ動作説明図、第５図は、完成
した鋸刃を示す説明図である。
■・・・・・・鋸刃、３・・・・・・鋸刃送り手段、８
・・・・・・ロッド供給手段、１３・・・・・・加熱手
段、１５・・・・・・検出手段、１８・・・・・・制御
手段、１２・・・・・・ロッドガイド（ロヅド整形手段
を兼ねている）。
３８６一FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention, FIG.
3 and 4 are explanatory views of the operation, respectively, and FIG. 5 is an explanatory view showing the completed saw blade. ■...Saw blade, 3...Saw blade feeding means, 8
...Rod supply means, 13 ... Heating means, 15 ... Detection means, 18 ... Control means, 12 ... Rod guide ( It also serves as a means of plastic surgery). 386 one
Claims (3)
を順次送るための鋸刃送り手段と、前記鋸刃送り手段に
よって送られる前記鋸刃に前記硬質金属からなる溶着ロ
ッドを供給するロッド供給手段と、 前記鋸刃および前記ロッド供給手段によって供給される
前記溶着ロッドを必要に応じて加熱し、前記溶着ロッド
の一部を前記鋸刃の先端に溶着する加熱手段と、 前記鋸刃送り手段、前記ロッド供給手段及び加熱手段を
制御するための制御手段を備えた、鋸刃用硬質金属溶着
装置において、 溶着を行う前記鋸刃の先端及び前記ロッド供給手段によ
って供給される前記溶着ロッドの先端の位置関係を検出
する検出手段を備えており、この検出手段によって検出
した前記鋸刃の先端及び前記溶着ロッドの位置関係が正
常な場合に前記制御手段によって、溶着の手順を進行さ
せることを特徴とする鋸刃用硬質金属溶着装置。(1) A saw blade feeding means for sequentially feeding the saw blade in order to weld hard metal to the tip of the saw blade, and supplying a welding rod made of the hard metal to the saw blade fed by the saw blade feeding means. a rod supply means for heating the saw blade and the welding rod supplied by the rod supply means as necessary, and welding a part of the welding rod to the tip of the saw blade; A hard metal welding device for a saw blade, comprising a control means for controlling a blade feeding means, the rod supplying means, and a heating means, wherein the tip of the saw blade performing welding and the welding supplied by the rod supplying means A detection means is provided for detecting a positional relationship between the tips of the rods, and when the positional relationship between the tip of the saw blade and the welding rod detected by the detection means is normal, the control means causes the welding procedure to proceed. A hard metal welding device for saw blades, which is characterized by:
、前記検出手段は、 前記鋸刃及び前記溶着ロッドが接触したときに、電流を
流すための電源手段と、 前記電源手段によって流れる電流を検出する電流検出手
段から構成されていることを特徴とする鋸刃用硬質金属
溶着装置。(2) In the hard metal welding means for a saw blade according to item 1, the detection means includes: a power supply means for causing a current to flow when the saw blade and the welding rod come into contact; and a current flows by the power supply means. A hard metal welding device for a saw blade, comprising a current detection means for detecting current.
装置において、前記ロッド供給手段は、溶着工程が終了
したあとの前記溶着ロッドの先端の形状を整えるロッド
整形手段を備えていることを特徴とする鋸刃用硬質金属
溶着装置。(3) In the hard metal welding device for saw blades according to item 1 or 2, the rod supply means includes rod shaping means for adjusting the shape of the tip of the welding rod after the welding process is completed. Hard metal welding equipment for saw blades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2102487A JPH0710433B2 (en) | 1990-04-17 | 1990-04-17 | Hard metal welding device for saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2102487A JPH0710433B2 (en) | 1990-04-17 | 1990-04-17 | Hard metal welding device for saw blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03297559A true JPH03297559A (en) | 1991-12-27 |
| JPH0710433B2 JPH0710433B2 (en) | 1995-02-08 |
Family
ID=14328794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2102487A Expired - Lifetime JPH0710433B2 (en) | 1990-04-17 | 1990-04-17 | Hard metal welding device for saw blade |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710433B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299870C (en) * | 2004-08-25 | 2007-02-14 | 董金奎 | Disk saw alloy knife welding device |
| CN107775229A (en) * | 2018-01-23 | 2018-03-09 | 湖南泰嘉新材料科技股份有限公司 | Welding for bi-metal bandsaw blades is to tooth method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59191571A (en) * | 1983-04-15 | 1984-10-30 | Miyagawa Mitsusou Seisakusho:Kk | Stellite depositing machine for band saw |
| JPS60206570A (en) * | 1984-03-31 | 1985-10-18 | Hitachi Zosen Corp | How to adjust the protruding core length |
-
1990
- 1990-04-17 JP JP2102487A patent/JPH0710433B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59191571A (en) * | 1983-04-15 | 1984-10-30 | Miyagawa Mitsusou Seisakusho:Kk | Stellite depositing machine for band saw |
| JPS60206570A (en) * | 1984-03-31 | 1985-10-18 | Hitachi Zosen Corp | How to adjust the protruding core length |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299870C (en) * | 2004-08-25 | 2007-02-14 | 董金奎 | Disk saw alloy knife welding device |
| CN107775229A (en) * | 2018-01-23 | 2018-03-09 | 湖南泰嘉新材料科技股份有限公司 | Welding for bi-metal bandsaw blades is to tooth method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0710433B2 (en) | 1995-02-08 |
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