JPS632103Y2 - - Google Patents
Info
- Publication number
- JPS632103Y2 JPS632103Y2 JP13016583U JP13016583U JPS632103Y2 JP S632103 Y2 JPS632103 Y2 JP S632103Y2 JP 13016583 U JP13016583 U JP 13016583U JP 13016583 U JP13016583 U JP 13016583U JP S632103 Y2 JPS632103 Y2 JP S632103Y2
- Authority
- JP
- Japan
- Prior art keywords
- container
- auxiliary
- powder
- blade
- raw material
- 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.)
- Expired
Links
- 239000000843 powder Substances 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 21
- 239000011230 binding agent Substances 0.000 claims description 15
- 238000009775 high-speed stirring Methods 0.000 claims description 12
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 description 18
- 230000003179 granulation Effects 0.000 description 11
- 238000005469 granulation Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- -1 feed Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000011868 grain product Nutrition 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Glanulating (AREA)
Description
【考案の詳細な説明】
本考案は、高速撹拌型混合造粒機の改良に関す
るものである。[Detailed Description of the Invention] The present invention relates to an improvement of a high-speed stirring type mixing granulator.
粉体の造粒方法の１つとして高速撹拌型混合造
粒機を用いる方法がある。第１図および第２図
は、一般的な高速撹拌型混合造粒機を示すもので
ある。この造粒機はベースボツクス１と容器２と
からなり、ベースボツクス１内にはモーター３お
よび歯車装置４が配設されている。一方、容器２
内には歯車装置４の駆動軸５に取付けられた主羽
根６と、該主羽根６の軸７に対して直角な方向に
突出した補助羽根８とが配設され、該補助羽根８
には駆動軸９が取付けられ、モータ１０によつて
駆動するようになつている。また容器２の側面に
は、造粒品の排出装置１１が付設され、この排出
装置１１は、排出弁１２、排出ロツド１３、排出
シユート１４および排出用エアーシリンダー１５
からなつている。 One of the methods for granulating powder is a method using a high-speed stirring type mixing granulator. FIGS. 1 and 2 show a general high-speed stirring type mixing granulator. This granulator consists of a base box 1 and a container 2, and a motor 3 and a gear device 4 are disposed inside the base box 1. On the other hand, container 2
A main blade 6 attached to the drive shaft 5 of the gear device 4 and an auxiliary blade 8 protruding in a direction perpendicular to the axis 7 of the main blade 6 are disposed inside the auxiliary blade 8.
A drive shaft 9 is attached to the drive shaft 9 and is driven by a motor 10. Further, a granulated product discharge device 11 is attached to the side surface of the container 2, and this discharge device 11 includes a discharge valve 12, a discharge rod 13, a discharge chute 14, and a discharge air cylinder 15.
It is made up of
この装置を用いて混合造粒するには、まず、容
器２の上カバー１９を開いて原料投入口２０か
ら、計量した分量の数種の原料粉末（造粒目的
物）を容器２内に投入する。次いで歯車装置４お
よび駆動軸５を介してモータ３によつて所定の回
転数で主羽根６を回転させると同時に、モータ１
０に取付けられた駆動軸９によつて回転する補助
羽根８を所定時間回転させ、原料粉末を充分に混
合する。原料粉末は、主羽根６の回転に伴つて容
器２の中で水平方向に激しく回転運動すると同時
に遠心力を受けて容器２の外周壁に到達し、容器
２の上部収縮部による反転作用を受けて素早く主
羽根６の中心部附近に戻る。なお、この状況を第
１図及び第２図に矢印にて示す。このような運動
が継続される結果、原料粉末は容器２の中でいわ
ゆる縄ない運動による対流作用と剪断混合（分
散）作用とを受け、加えて補助羽根８による局所
的な高速剪断混合作用との複合作用によつて、極
めて短時間で精密な混合（分散）が完了する。 To mix and granulate using this device, first open the top cover 19 of the container 2 and input measured amounts of several kinds of raw material powders (granulation target) into the container 2 from the raw material inlet 20. do. Next, the main blade 6 is rotated by the motor 3 at a predetermined rotation speed via the gear device 4 and the drive shaft 5, and at the same time, the motor 1
The auxiliary blade 8, which is rotated by a drive shaft 9 attached to the base plate 0, is rotated for a predetermined period of time to thoroughly mix the raw material powder. As the main blade 6 rotates, the raw material powder rotates violently in the horizontal direction inside the container 2, and at the same time, receives centrifugal force and reaches the outer peripheral wall of the container 2, where it is subjected to an inversion action by the upper contracted part of the container 2. and quickly return to the vicinity of the center of the main blade 6. This situation is shown by arrows in FIGS. 1 and 2. As a result of this continuous movement, the raw material powder is subjected to a convection action and a shear mixing (dispersion) action due to so-called rope-free movement in the container 2, as well as a local high-speed shear mixing action by the auxiliary blades 8. Due to the combined action of these, precise mixing (dispersion) is completed in an extremely short time.
以上の混合操作に続いて造粒操作が行なわれる
が、この造粒操作では主羽根６の回転数を原料粉
末の造粒に適当な比較的低速度に、また補助羽根
８の回転数を比較的高速度にセツトし、結合剤投
入口２１から原料粉末の性質と造粒目的に合致し
た結合剤溶液（バインダー）を投入添加する。バ
インダーの供給を受けた原料粉末は、原料粉末自
身および／またはバインダー特有の粘性結合力
と、主羽根６の混合、分散作用とによつて粉末粒
子相互の凝集が進行して粒状粒子となり、粒状粒
子中の団塊物は高速回転する補助羽根８による解
砕作用を受けて適当な粒子サイズに整粒される。
言い換えれば、主羽根６は、原料粉末自身およ
び／またはバインダーの粘結性と相俟つて、主と
して粉末粒子を相互に凝集させる役割をもち、ま
た補助羽根８は、主として造粒操作の過程によつ
て粒状粒子中に生じた団塊物を解砕整粒する役割
をもつ。上記の造粒工程（操作）の所要時間は、
原料粉末及びバインダーの種類によつても異なる
が、例えば３〜15分で完了する。 Following the above mixing operation, a granulation operation is performed, but in this granulation operation, the rotation speed of the main blade 6 is set to a relatively low speed suitable for granulating the raw material powder, and the rotation speed of the auxiliary blade 8 is compared. A binder solution (binder) matching the properties of the raw material powder and the purpose of granulation is added through the binder inlet 21. The raw material powder supplied with the binder progresses through agglomeration of the powder particles to become granular particles due to the viscous bonding force unique to the raw material powder itself and/or the binder, and the mixing and dispersing action of the main blade 6, resulting in granular particles. The agglomerates in the particles are crushed into a suitable particle size by the auxiliary blades 8 rotating at high speed.
In other words, the main blade 6 mainly has the role of coagulating the powder particles together with the caking properties of the raw material powder itself and/or the binder, and the auxiliary blade 8 mainly has the role of coagulating the powder particles together in the process of granulation operation. It has the role of crushing and grading the nodules formed in the granular particles. The time required for the above granulation process (operation) is:
Although it varies depending on the type of raw material powder and binder, it can be completed in 3 to 15 minutes, for example.
造粒品の排出操作にあたつては、容器２の側面
に配設された排出弁１２を、排出用エアシリンダ
１５の作用により排出ロツド１３を介して第１図
中左方へ移動させて排出口２２を開口すれば、造
粒品は遠心力により短時間（30秒以内）のうちに
排出シユート１４から排出され、以上で一連の混
合、造粒操作を終了する。 To discharge the granulated product, the discharge valve 12 disposed on the side of the container 2 is moved to the left in FIG. 1 via the discharge rod 13 by the action of the discharge air cylinder 15. When the discharge port 22 is opened, the granulated product is discharged from the discharge chute 14 within a short time (within 30 seconds) due to centrifugal force, and the series of mixing and granulation operations is thus completed.
このような高速撹拌型混合造粒機は、多成分、
多品種からなる原料粉末を短時間で精密に混合で
き、しかも引続き同一容器内にて比較的重質で粒
径の均一化した造粒品が得られるので、医薬品、
食料品、農薬、飼料、肥料、無機、有機化学品
等、広範囲にわたつて用いられている。 This kind of high-speed stirring type mixing granulator can handle multi-component,
It is possible to precisely mix raw material powders consisting of a wide variety of materials in a short time, and to obtain granulated products with a relatively heavy weight and uniform particle size in the same container, making it possible to mix pharmaceuticals,
It is used in a wide range of foods, pesticides, feed, fertilizers, inorganic and organic chemicals, etc.
しかしながら、原料粉末が多品種、多成分にわ
たるため、特定の原料粉末とバインダーの種類の
組合せおよびバインダーの添加量の如何によつて
は、造粒操作中に原料粉末が顕著な粘性および弾
力性を示して極端に大きな団塊物を生ずる場合が
あり、このようなケースでは前記の補助羽根８を
高速回転させても該団塊物は解砕されることな
く、逆に団塊物の大きさを生長させることにな
る。その結果、造粒品は極端に大きな塊状品と極
端に小さな造粒品に生成し、目的製品の許容粒度
分布範囲内における歩留りの低下を招くのみなら
ず、甚だしき場合は希望する中間粒子の造粒品が
殆んど得られないなどの問題があつた。 However, since the raw material powders include many types and components, depending on the combination of the specific raw material powder and binder type and the amount of binder added, the raw material powder may exhibit significant viscosity and elasticity during the granulation operation. In such cases, even if the auxiliary blade 8 is rotated at high speed, the nodules will not be broken down, but will instead grow in size. It turns out. As a result, the granulated product is formed into extremely large lumps and extremely small granulated products, which not only causes a decrease in the yield within the allowable particle size distribution range of the target product, but also, in extreme cases, may result in the formation of the desired intermediate particles. There were problems such as hardly any grain products being obtained.
本考案は、上記問題点を解消する高速撹拌型混
合造粒機を提供することを目的とし、その要旨と
するところは、容器内に投入された粉体を混合し
つつこれに結合剤を添加して所定の粒径を有する
造粒品を形成するようにした高速撹拌型混合造粒
機において、上記容器の底面壁に沿つて回転する
主羽根と、上記容器の側面壁に沿つて回転する補
助羽根と、上記補助羽根の外周に沿つて配設され
たふるい部材とを備え、上記容器内で所定の粒径
以上の大きさに生長した団塊物を上記ふるい部材
によつて受け止めて上記補助羽根で解砕するよう
に構成したことを特徴とする高速撹拌型混合造粒
機にある。 The purpose of this invention is to provide a high-speed stirring type mixing granulator that solves the above problems, and its gist is to add a binder to the powder while mixing it in a container. In the high-speed stirring type mixing granulator, which is configured to form a granulated product having a predetermined particle size, a main blade rotates along the bottom wall of the container, and a main blade rotates along the side wall of the container. It is equipped with an auxiliary blade and a sieve member disposed along the outer periphery of the auxiliary blade, and the sieve member receives the nodules that have grown to a size larger than a predetermined particle size in the container to provide the auxiliary blade. A high-speed stirring type mixing granulator is characterized in that it is configured to crush using blades.
以下に本考案の一実施例を第３図〜第９図に基
づいて説明する。 An embodiment of the present invention will be described below based on FIGS. 3 to 9.
本考案に係る高速撹拌型混合造粒機は、第３図
〜第７図に示す如く補助羽根８の外周軌道に沿つ
て、該補助羽根８の衝撃面に対して平行をなすふ
るい部材としての多数の固定棒２５を第５図およ
び第７図に明示する如く粉末の流れの下流側に配
設し、これら固定棒２５の先端および根元はそれ
ぞれ中抜きの円環体２６および２７に固着され、
多数の固定棒２５は、全体として補助羽根８の中
心と合致するように容器２の内壁に着脱自在に固
定されている。 As shown in FIGS. 3 to 7, the high-speed stirring type mixing granulator according to the present invention has a sieving member that is parallel to the impact surface of the auxiliary blades 8 along the outer circumferential trajectory of the auxiliary blades 8. A large number of fixing rods 25 are arranged on the downstream side of the powder flow as clearly shown in FIGS. 5 and 7, and the tips and bases of these fixing rods 25 are fixed to hollow toric bodies 26 and 27, respectively. ,
A large number of fixing rods 25 are detachably fixed to the inner wall of the container 2 so as to coincide with the center of the auxiliary blade 8 as a whole.
本考案の上記構成によると、前記した如く原料
粉末とバインダーの性質によつて造粒操作中に生
ずる団塊物は、適当な粒子径の造粒品と一緒に、
第５図および第７図に示す如く固定棒２５の上流
側に形成された入口部３０、すなわち固定棒の存
在しない領域（第５図に示すθ1の範囲）および一
方の円環体２６の内側領域から補助羽根８の内側
へと導入される。そして適当な粒子径の造粒品は
固定棒２５の間隙Ｇよりくぐり抜け、団塊物のみ
が固定棒２５と補助羽根８とによつて選択的に解
砕される。この操作を一定時間継続することによ
つて粒子径の揃つた造粒品を歩留りよく得ること
ができる。 According to the above structure of the present invention, the nodules generated during the granulation operation due to the properties of the raw material powder and the binder as described above are combined with the granulated product having an appropriate particle size.
As shown in FIGS. 5 and 7, the inlet portion 30 formed on the upstream side of the fixed rod 25, that is, the area where the fixed rod does not exist (the range of θ 1 shown in FIG. 5) and one of the toric bodies 26. It is introduced into the inside of the auxiliary blade 8 from the inner region. The granulated product having an appropriate particle size passes through the gap G of the fixed rod 25, and only the aggregates are selectively crushed by the fixed rod 25 and the auxiliary blades 8. By continuing this operation for a certain period of time, granulated products with uniform particle sizes can be obtained with a high yield.
なお、固定棒２５の配設範囲（第５図に示すθ2
の範囲）および固定棒２５同志の間隙Ｇは、原料
粉末とバインダーの性質により最適な値を選定す
る。また固定棒２５の断面形状は図示の如く円形
が一般的であるが、必要に応じて角形、矩形、台
形などを選定して用いることができる。 Note that the installation range of the fixed rod 25 (θ 2 shown in FIG.
range) and the gap G between the fixing rods 25 are selected to be optimal values depending on the properties of the raw material powder and the binder. Further, the cross-sectional shape of the fixing rod 25 is generally circular as shown in the figure, but a square, rectangular, trapezoid, etc. can be selected and used as required.
また、補助羽根８の形状は、第１図ないし第７
図に示されたようなコの字型のものでなく、例え
ば第８図に示す如き十字型の平板を軸に一定間隔
で複数枚取付けた、いわゆるマルチブルチヨツパ
ー型の補助羽根２８でもよく、この場合の固定棒
２５の構造と配列は、第３図ないし第７図に示す
如く駆動軸９と平行の配列でもよいが、粉末とバ
インダーの性状によつては例えば第９図に示す如
き駆動軸９と直角方向のリング状配列にすること
がより適当な場合もある。 The shape of the auxiliary blade 8 is shown in FIGS. 1 to 7.
Instead of the U-shaped auxiliary blade 28 as shown in the figure, the auxiliary blade 28 may be a so-called multi-chopper type auxiliary blade 28, in which a plurality of cross-shaped flat plates are attached at regular intervals around the axis as shown in Figure 8, for example. In this case, the structure and arrangement of the fixing rods 25 may be arranged parallel to the drive shaft 9 as shown in FIGS. 3 to 7, but depending on the properties of the powder and binder, it may be arranged as shown in FIG. 9, for example. A ring-shaped arrangement perpendicular to the drive shaft 9 may be more appropriate.
また、固定棒２５及び円環体２６，２７の材質
は、各種の金属、合成樹脂等を採用してよいが、
粉末の付着防止対策などのために、必要に応じて
金属にテフロンなどの各種コーテイング材を施し
たものを採用してもよい。 Furthermore, the fixing rod 25 and the toric bodies 26 and 27 may be made of various metals, synthetic resins, etc.
In order to prevent the adhesion of powder, metal may be coated with various coating materials such as Teflon, if necessary.
また、上記実施例では固定棒２５を容器２の内
壁に固定したが、この固定棒２５を補助羽根８と
同一方向あるいは逆方向に回転させてもよい。こ
の場合、固定棒２５の駆動は例えば駆動軸９に差
動装置を取付けることにより容易に実現できる。
なお、この場合は入口部３０に固定棒２５を配設
するとともに、補助羽根８およびふるい部材全体
をその軸線が容器２の接線方向に向くように配設
すればよい。これにより円環体２６の内側領域が
実質的に入口部３０の機能を果すことになる。 Further, in the above embodiment, the fixing rod 25 is fixed to the inner wall of the container 2, but the fixing rod 25 may be rotated in the same direction as the auxiliary blade 8 or in the opposite direction. In this case, the fixed rod 25 can be easily driven by, for example, attaching a differential device to the drive shaft 9.
In this case, the fixing rod 25 may be disposed at the inlet portion 30, and the auxiliary blades 8 and the entire sieve member may be disposed such that their axes face in the tangential direction of the container 2. The inner region of the torus 26 thereby essentially functions as the inlet section 30 .
本考案は上述の如く、補助羽根の外周に沿つて
ふるい部材を配設したものであるから、容器内に
投入される粉体と結合剤の性質によつて造粒品に
粘性や弾力性が生じ、この結果上記造粒品が所定
の粒径以上の大きさの団塊物に生長するようなこ
とがあつても、上記団塊物が上記ふるい部材によ
つて確実に受け止められて上記補助羽根によつて
解砕されるため、極めて粒子径の揃つた造粒品を
歩留りよく得ることができる。 As mentioned above, in this invention, the sieve member is arranged along the outer periphery of the auxiliary blades, so the viscosity and elasticity of the granulated product will vary depending on the properties of the powder and binder put into the container. As a result, even if the granulated product grows into nodules with a size larger than a predetermined particle size, the nodules are reliably received by the sieve member and the auxiliary blades pass through the auxiliary blades. Since the particles are then crushed, granulated products with extremely uniform particle sizes can be obtained with a high yield.
また、上記補助羽根とふるい部材との間には強
いせん断作用が生じるので、上記団塊物の生長を
未然に抑制することができる。また、上記造粒品
の粘性や弾力性が比較的小さく、このため団塊物
が生じるおそれのない造粒操作においても、上記
せん断作用によつて造粒品の粒度の歩留りが著し
く向上し、効率のよい造粒操作が可能となる。 Further, since a strong shearing action occurs between the auxiliary blades and the sieve member, the growth of the nodules can be suppressed beforehand. In addition, the viscosity and elasticity of the granulated product are relatively low, so even in granulation operations where there is no risk of forming nodules, the shearing action significantly improves the particle size yield of the granulated product, making it more efficient. This enables good granulation operation.
第１図および第２図は、一般的な高速撹拌型混
合造粒機を示したもので、第１図はその正面図、
第２図はその平面図である。また、第３図ないし
第７図は本考案に係る高速撹拌型混合造粒機の一
実施例を示したもので、第３図はその正面図、第
４図は第３図の平面図、第５図は本考案の固定
棒、円環体、補助羽根の構成を拡大して示した正
面図、第６図は第５図の−線矢視側面図、第
７図は原料粉末および団塊物の流れを説明するた
めの固定棒、円環体、補助羽根の斜視図、第８図
は補助羽根の別の実施例を示す斜視図、第９図は
第８図に示す補助羽根に対応して実施される本考
案の固定棒、円環体、補助羽根の構成を示した側
面図である。
２……容器、６……主羽根、８，２８……補助
羽根、２５……固定棒（ふるい部材）。
Figures 1 and 2 show a general high-speed stirring type mixing granulator; Figure 1 is a front view;
FIG. 2 is a plan view thereof. 3 to 7 show an embodiment of the high-speed stirring type mixing granulator according to the present invention, FIG. 3 is a front view thereof, FIG. 4 is a plan view of FIG. 3, and FIG. Fig. 5 is an enlarged front view showing the structure of the fixing rod, torus, and auxiliary blade of the present invention, Fig. 6 is a side view taken along the line - - of Fig. 5, and Fig. 7 is a raw material powder and nodules. A perspective view of a fixed rod, a torus, and an auxiliary blade to explain the flow of objects; Figure 8 is a perspective view showing another embodiment of the auxiliary blade; Figure 9 corresponds to the auxiliary blade shown in Figure 8. FIG. 3 is a side view showing the configuration of the fixing rod, torus, and auxiliary blades of the present invention. 2...Container, 6...Main blade, 8, 28...Auxiliary blade, 25...Fixing rod (sieve member).
Claims (1)
容器の側面壁に配設された補助羽根とを有し、上
記容器内に投入された粉体を混合しつつこれに結
合剤を添加して所定の粒径を有する造粒品を形成
するようにした高速撹拌型混合造粒機において、
上記補助羽根の周囲をふるい部材で囲繞するとと
もに、上記ふるい部材に、上記粉体の流れ方向上
流側に臨んで開口した入口部を形成したことを特
徴とする高速撹拌型混合造粒機。 It has a main blade that rotates along the bottom wall of the container and an auxiliary blade that is arranged on the side wall of the container, and adds a binder to the powder while mixing it in the container. In a high-speed stirring type mixing granulator that forms a granulated product having a predetermined particle size,
A high-speed stirring type mixing granulator, characterized in that the auxiliary blades are surrounded by a sieve member, and the sieve member has an inlet opening facing upstream in the flow direction of the powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13016583U JPS6039329U (en) | 1983-08-23 | 1983-08-23 | High speed stirring type mixing granulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13016583U JPS6039329U (en) | 1983-08-23 | 1983-08-23 | High speed stirring type mixing granulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6039329U JPS6039329U (en) | 1985-03-19 |
| JPS632103Y2 true JPS632103Y2 (en) | 1988-01-20 |
Family
ID=30294700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13016583U Granted JPS6039329U (en) | 1983-08-23 | 1983-08-23 | High speed stirring type mixing granulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039329U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101431766B1 (en) * | 2013-05-03 | 2014-08-19 | 주식회사 피티케이 | High speed granulator |
| JP7237355B2 (en) * | 2019-06-26 | 2023-03-13 | 株式会社パウレック | Discharging method of powder and granular material processed product from stirring and mixing granulator |
-
1983
- 1983-08-23 JP JP13016583U patent/JPS6039329U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6039329U (en) | 1985-03-19 |
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