JPS5823810B2 - Deforming device in metal lid screw forming machine - Google Patents
Deforming device in metal lid screw forming machineInfo
- Publication number
- JPS5823810B2 JPS5823810B2 JP54017258A JP1725879A JPS5823810B2 JP S5823810 B2 JPS5823810 B2 JP S5823810B2 JP 54017258 A JP54017258 A JP 54017258A JP 1725879 A JP1725879 A JP 1725879A JP S5823810 B2 JPS5823810 B2 JP S5823810B2
- Authority
- JP
- Japan
- Prior art keywords
- molded member
- lid material
- metal lid
- inner molded
- thread
- 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
Landscapes
- Transmission Devices (AREA)
- Closures For Containers (AREA)
Description
【発明の詳細な説明】
本発明は壜その他の容器に使用される金属蓋の螺条成形
機に於ける成形装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a forming device in a thread forming machine for metal lids used for bottles and other containers.
従来この種螺条成形機は周囲に螺条成形溝を夫夫形成し
た内側成形部材と外側成形部材とを備え金属蓋材料を筒
形の内側成形部材に嵌着し、該内側成形部材と外側成形
部材の各螺条成形溝を互に咬合して該蓋材料に螺条が形
成されるように構成するを一般とし、これに於て螺条成
形の完了した金属蓋を内側成形部材からの成形するに当
りノックアウトピンで単に突き落していたので内側成形
部材の外径を金属蓋材料の内径よりもかなり小さく形成
しなければならず、その結果成形に際して金属蓋材料が
遊動するため精密な螺条成形加工を施せず、2条若しく
はそれ以上の多数条の螺条成形を行なえない欠点があっ
た。Conventionally, this type of thread forming machine has an inner molding member and an outer molding member, each having a thread forming groove formed around the periphery, and a metal lid material is fitted into the cylindrical inner molding member, and the inner molding member and the outer molding member are connected to each other. In general, the thread forming grooves of the molded member are engaged with each other to form a thread in the lid material, and in this case, the metal lid that has been thread-formed is removed from the inner molded member. During molding, the knockout pin was simply used to push it down, so the outer diameter of the inner molded member had to be made much smaller than the inner diameter of the metal lid material.As a result, the metal lid material moved during molding, requiring a precise screw thread. There was a drawback that it was not possible to perform strip forming processing, and that it was not possible to perform thread forming of two or more threads.
本発明は螺条成形加工の完了した金属蓋材料を成形する
手段を改良することにより前記欠点の解消を図るを目的
としたもので、周囲に螺条成形溝を夫々形成した内側成
形部材と外側成形部材とを備え、金属蓋材料を筒形の内
側成形部材に嵌着し、該内側成形部材と外側成形部材の
各螺条成形溝を互に咬合して該蓋材料に螺条を形成する
ようにしたものに於いて、螺条成形作動における内側成
形部材の回転方向を該内側成形部材に嵌着した蓋材料が
抜は出す方向とすると共に、内側成形部材の外径を該金
属蓋材料の内径よりもわずかに小さく形成し、該内側成
形部材の軸方向の一方側に金属蓋材料を内側成形部材に
嵌着すべく往動する移動部材を設け、該軸方向の他方側
に該移動部材との間で螺条成形後の金属蓋材料を挾持固
定し乍ら移動部材の復動と共に移動する押土部材を設け
て成る。The present invention aims to eliminate the above-mentioned drawbacks by improving the means for forming the metal lid material that has undergone the thread forming process. a molded member, a metal lid material is fitted into the cylindrical inner molded member, and the thread forming grooves of the inner molded member and the outer molded member are engaged with each other to form a thread in the lid material. In such a device, the direction of rotation of the inner molded member during the thread forming operation is the direction in which the lid material fitted to the inner molded member is pulled out, and the outer diameter of the inner molded member is set to be the direction in which the lid material fitted to the inner molded member is pulled out. A movable member is provided on one axial side of the inner molded member and moves forward to fit the metal lid material onto the inner molded member, and the movable member is provided on the other axial side of the inner molded member. A dosing member is provided which clamps and fixes the metal lid material after thread forming between the members and moves with the return movement of the movable member.
本発明の実施例を別紙図面について説明すると、第1図
及び第2図に於て1は金属蓋材料2の螺条成形機を示し
、該螺条成形機1には例えば第6図示のようなカーリン
グその他の前処理工程の終了した金属蓋材料2がその開
放部6の上方にして供給クーレット4から順次供給され
、ここで該金属蓋材料2に螺条5が施されて第7図示の
ような金属蓋6となって排出ターレット7から送り出さ
れる。Embodiments of the present invention will be explained with reference to the attached drawings. In FIGS. 1 and 2, reference numeral 1 indicates a thread forming machine for metal lid material 2, and the thread forming machine 1 includes, for example, as shown in FIG. 6. The metal lid material 2 that has been subjected to curling and other pretreatment steps is sequentially fed from the supply coolet 4 above the opening 6, and here the metal lid material 2 is threaded with threads 5 to form the shape shown in Figure 7. It becomes a metal lid 6 like this and is sent out from the discharge turret 7.
該螺条成形機1は−L下方向の筒形の内側成形部材10
と該内側成形部材10の下方のこれと中心軸を合致させ
て上下往復動自在に設けた移送部材11と、該内側成形
部材10の側方に設けた平面から見て略扇形の外側成形
部材12と、該内側成形部材10の上方にその中心軸を
合致させた環状の押圧部材13とを備える。The thread forming machine 1 has a cylindrical inner forming member 10 in the downward direction.
, a transfer member 11 provided below the inner molded member 10 so as to be able to reciprocate up and down with its central axis aligned with the inner molded member 10; and an outer molded member provided on the side of the inner molded member 10 and approximately fan-shaped when viewed from a plane. 12, and an annular pressing member 13 whose central axis coincides with the upper part of the inner molded member 10.
該内側成形部材10は、機台14に垂直な固定軸15に
回動自在に取付けた転胴16を上下に挿通するスピンド
ル17の下端に設けられる。The inner molding member 10 is provided at the lower end of a spindle 17 that vertically passes through a rolling cylinder 16 rotatably attached to a fixed shaft 15 perpendicular to the machine base 14 .
該スピンドル17の上端には転胴16の上方の固定軸1
5に一体に設けた大歯車18と咬合する小歯車19を備
え、該固定軸15の下方のこれに対して回動自在に設け
た駆動歯車20が回転されると回転盤21及びこれを連
結杆22を介して連結した転胴16が固定軸15の周囲
を回動する。At the upper end of the spindle 17 is a fixed shaft 1 above the rolling cylinder 16.
A small gear 19 is provided which meshes with a large gear 18 provided integrally with the fixed shaft 15, and when a driving gear 20 provided rotatably relative to the fixed shaft 15 below the fixed shaft 15 is rotated, the rotary disk 21 and the small gear 19 are connected to each other. A rolling cylinder 16 connected via a rod 22 rotates around a fixed shaft 15.
従って該小歯車19と一体のスピンドル17及び内側成
形部材10は大歯車18の周囲を公転し乍ら自転する小
歯車19と同様の回転を行なう。Therefore, the spindle 17 and the inner molded member 10, which are integral with the small gear 19, rotate in the same way as the small gear 19, which rotates on its own axis while revolving around the large gear 18.
該転胴16には例えば8組の内側成形部材10、スピン
ドル17及び小歯車19が設けられる。The rolling cylinder 16 is provided with, for example, eight sets of inner molding members 10, spindles 17, and small gears 19.
移送部材11は、第2図及び第3図に見られるように、
回転盤21に垂直に上下動自在に設けた筒状組立体23
にベアリング24を介して回転自在に取付けされ、該筒
状組立体23はその下部に横方向に設けたローラー軸2
5のローラー26゜27を介して機台14に固定した1
対のカム2829と当接する。The transfer member 11, as seen in FIGS. 2 and 3,
A cylindrical assembly 23 that is vertically movable up and down on the rotary disk 21
The cylindrical assembly 23 has a roller shaft 2 laterally provided at its lower part.
1 fixed to the machine base 14 via the rollers 26 and 27 of 5.
It comes into contact with a pair of cams 2829.
両カム28,29は固定軸15の周囲に環状に配置され
、その一方のカム28はローラー26に下方から当接し
、他方のカム29はローラー27の上方から当接し、筒
状組立体23はカム28,29の曲線に沿って上下動さ
れるようにした。Both cams 28 and 29 are arranged annularly around the fixed shaft 15, one cam 28 abuts the roller 26 from below, the other cam 29 abuts the roller 27 from above, and the cylindrical assembly 23 It is arranged to move up and down along the curves of the cams 28 and 29.
両カム2B、29のカム曲線は第1図示の供給ターレッ
ト4から金属蓋材料2が供給された直後の位置に於て移
送部材11を上昇させ、また排出ターレット7の前方の
位置に於て該移送部材11を下降さすべく形成される。The cam curves of both cams 2B, 29 raise the transfer member 11 at a position immediately after the metal lid material 2 is fed from the supply turret 4 shown in the first diagram, and at a position in front of the discharge turret 7. It is formed to lower the transfer member 11.
30は移送部材11と内側成形部材10との衝突を緩和
する緩衝ばねである。Reference numeral 30 denotes a buffer spring that cushions the collision between the transfer member 11 and the inner molded member 10.
外側成形部材12は固定軸15にキー31により挿通固
定される筒状の取付部32と該固定軸15の周囲に扇形
に展開する成形部33とから成り、該成形部33の周面
には前記内側成形部材10の局面に形成した螺条成形溝
34と咬合う螺条成形溝35が形成され、移送部材11
により金属蓋材料2の嵌着された内側成形部材10が該
外側成形部材12の周りを摺接し乍ら回転することによ
って該金属蓋材料2の周囲に螺条5が形成される。The outer molded member 12 consists of a cylindrical mounting portion 32 that is inserted into and fixed to the fixed shaft 15 with a key 31, and a molded portion 33 that expands in a fan shape around the fixed shaft 15. A threaded groove 35 is formed that engages with the threaded groove 34 formed on the surface of the inner molded member 10, and the transfer member 11
As a result, the inner molded member 10 fitted with the metal lid material 2 slides around the outer molded member 12 and rotates, thereby forming a thread 5 around the metal lid material 2.
同、内側成形部材10の自転方向は内側成形部材10に
嵌着した蓋材料2が該内側成形部材10から抜は出す方
向とした。Similarly, the rotation direction of the inner molded member 10 was set in the direction in which the lid material 2 fitted onto the inner molded member 10 was pulled out from the inner molded member 10.
36は内側成形部材10、スピンドル17等を設けた転
胴16及び大歯車18並に外側成形部材12を固定軸1
5に沿って上下に微小移動を行なわせる微調整ハンドル
である。Reference numeral 36 denotes a fixed shaft 1 for fixing the inner molding member 10, the rolling cylinder 16 provided with the spindle 17, etc., the large gear 18, and the outer molding member 12.
This is a fine adjustment handle that allows minute movements up and down along 5.
押圧部材13は第2図、第4図及び第5図示のように前
記内側成形部材10の上方のスピンドル17に回動自在
に設けたガイドロール37を囲繞して設けた環状部材に
より構成され、該押圧部材13は一対のピン38.38
により係止する二叉状の腕片39を介して前記転胴16
に上下動自在に設けたノックアウトスピンドル40に取
付けされる。As shown in FIGS. 2, 4, and 5, the pressing member 13 is constituted by an annular member provided surrounding a guide roll 37 rotatably provided on the spindle 17 above the inner molded member 10, The pressing member 13 has a pair of pins 38.38.
The rolling cylinder 16 is connected to the rolling cylinder 16 via the forked arm piece 39 that is locked by the
The knockout spindle 40 is attached to a knockout spindle 40 that is movable up and down.
而して該ノックアウトスピンドル40はばね41により
常時上方位置に存するように持ち上げられ、スピンドル
40の上端部がこれに設けたローラー42を介して大歯
車18の下面に沿って環状に設けたノックアウトカム4
3と当接するようにした。The knockout spindle 40 is lifted by a spring 41 so that it always remains in the upper position, and the upper end of the spindle 40 is moved through a roller 42 provided thereon to a knockout cam provided in an annular shape along the lower surface of the large gear 18. 4
I made it touch 3.
該ノックアウトカム43はそのカム突起43aを内側成
形部材10が外側成形部材12から外れて金属蓋材料2
の螺条5の成形を完了する位置から排出ターレット7の
直前の位置までの間に於いて、前記した移送部材11を
下降させる側のカム2B、29の曲線と同一形状の次第
に下方に突出した形状に形成し、ノックアウトスピンド
ル40が該カム突起43aの下方に回って来るとこれに
より押し下げられ、環状の抑圧部材13がスピンドル1
7のガイドロール37の周囲から内側成形部材10の周
囲へと下動する。The knockout cam 43 has its cam protrusion 43a when the inner molded member 10 comes off from the outer molded member 12 and the metal lid material 2
Between the position where the forming of the thread 5 is completed and the position immediately before the discharge turret 7, a cam 2B, which has the same shape as the curve of the cams 2B and 29 on the side that lowers the transfer member 11, gradually protrudes downward. When the knockout spindle 40 rotates below the cam protrusion 43a, it is pushed down, and the annular suppressing member 13 is pressed against the spindle 1.
7 from around the guide roll 37 to around the inner molded member 10 .
この場合、該内側成形部材10の周囲に嵌着された螺条
5の成形を終了した金属蓋材料2の上方端縁に押圧部材
13が当接し、これと該材料2の下面に当接する昇降台
11との間に該金属蓋材料2を挾持し乍ら下動する。In this case, the pressing member 13 comes into contact with the upper edge of the metal lid material 2 after forming the thread 5 fitted around the inner molded member 10, and the pressing member 13 comes into contact with the lower surface of the material 2. While holding the metal lid material 2 between the base 11 and the base 11, the metal lid material 2 is moved downward.
該内側成形部材10は大歯車18の周囲を公転し乍ら自
転する小歯車19により回転し続けるが、その自転の方
向に対して金属蓋材料2に形成された螺条5が抜は出す
方向となるように内側成形部材10及び外側成形部材1
2の螺条成形溝34.35が施されているので金属蓋材
料2が移送部材11と押圧部材13との間に挾持される
と該金属蓋材料2と内側成形部材10との嵌合が緩み、
その緩み量に応じて下動する移送部材11及び押圧部材
13により該金属蓋材料2が内側成形部材10から成形
される。The inner molded member 10 continues to rotate by the small gear 19 that rotates around the large gear 18, but the direction in which the thread 5 formed on the metal lid material 2 is pulled out is relative to the direction of rotation. The inner molded member 10 and the outer molded member 1
Since the two screw forming grooves 34 and 35 are provided, when the metal lid material 2 is sandwiched between the transfer member 11 and the pressing member 13, the metal lid material 2 and the inner molded member 10 are not fitted together. slack,
The metal lid material 2 is molded from the inner molding member 10 by the transfer member 11 and the pressing member 13, which move downward according to the amount of loosening.
44はスピンドル17に挿着した偏心筒を示し、その中
心透孔45を転胴16の挿通孔46に対して偏心させ、
該偏心筒44を該転胴16に設けたウオーム歯車47に
より旋回すればスピンドル17が転胴16内を半径方向
に移動されて内側成形部材10と外側成形部材12の各
螺条成形溝34,35の咬合状態が調節される。Reference numeral 44 indicates an eccentric cylinder inserted into the spindle 17, whose center through hole 45 is eccentric with respect to the insertion hole 46 of the rolling cylinder 16,
When the eccentric cylinder 44 is rotated by a worm gear 47 provided on the rolling cylinder 16, the spindle 17 is moved in the radial direction within the rolling cylinder 16, and the thread forming grooves 34 of the inner molding member 10 and the outer molding member 12 are formed. 35 occlusal conditions are adjusted.
移送部材11の筒状組立体23にも外筒48の透孔49
の中心から偏心した移送部材11の挿入孔50を有する
偏心51が設けられ、該偏心筒51を旋回させることに
より内側成形部材10の中心軸と合致した位置に移送部
材11が位置するように調節される。The cylindrical assembly 23 of the transfer member 11 also has a through hole 49 in the outer cylinder 48.
An eccentric cylinder 51 having an insertion hole 50 for the transfer member 11 eccentric from the center is provided, and by rotating the eccentric cylinder 51, the transfer member 11 is adjusted to a position that coincides with the central axis of the inner molded member 10. be done.
本発明装置の作動を説明すると、供給ターレツと4から
開放部3を上方にして金属蓋材料2が順次螺条成形機1
の駆動歯車20と共に回転する回転盤21上に供給され
、該供給位置では該回転盤21と同一平面を維持するよ
うに下方のカム28゜29により制御された移送部材1
1の頂面に送り込まれる。To explain the operation of the apparatus of the present invention, the metal lid material 2 is sequentially fed into the screw forming machine 1 from the supply turret 4 with the opening 3 facing upward.
The transfer member 1 is fed onto a turntable 21 rotating together with the drive gear 20 of the transfer member 1 and is controlled by a lower cam 28, 29 so as to remain flush with the turntable 21 in the feeding position.
It is sent to the top surface of 1.
該金属蓋材料2は扇形の外側成形部材12の端部に達す
る以前に回転盤21からカム28.29により突出され
る移送部材11でその上方の内側成形部材10に嵌着さ
れる。Before reaching the end of the sector-shaped outer molding part 12, the metal lid material 2 is fitted onto the inner molding part 10 above it by means of a transfer element 11 which is projected by a cam 28, 29 from the turntable 21.
該内側成形部材10は回転盤21と共に固定軸15の周
囲を自転しつつ公転し該内側成形部材10がその螺条成
形溝34を外側成形部材12の螺条成形溝35と咬合す
るとき該金属蓋材料2の側面に螺条5が形成される。The inner molded member 10 rotates and revolves around the fixed shaft 15 together with the rotary disk 21, and when the inner molded member 10 engages its threaded groove 34 with the threaded groove 35 of the outer molded member 12, the metal A thread 5 is formed on the side surface of the lid material 2.
回転盤21及び内側成形部材10が更に回転して扇形の
外側成形部材12から外れると上方大歯車18の下面に
設けたノックアウトカム43及び移送部材11の下方の
カム28゜29の作用によりノックアウトスピンドル4
0が転胴16から下動すると同時に筒状組立体23が下
動され、押圧部材13と移送部材11との間に金属蓋材
料2を挾持し乍ら次第に下降する。When the rotary disk 21 and the inner molded member 10 further rotate and come off the fan-shaped outer molded member 12, the knockout spindle is removed by the action of the knockout cam 43 provided on the lower surface of the upper large gear 18 and the lower cams 28 and 29 of the transfer member 11. 4
0 moves down from the rolling cylinder 16, the cylindrical assembly 23 is moved down, and gradually descends while holding the metal lid material 2 between the pressing member 13 and the transfer member 11.
この作動によってそれまで内側成形部材10と共に自転
公転していた金属蓋材料2の自転が止められ内側成形部
材10のみが自転するのでこれの螺条成形溝34に沿っ
て金属蓋材料2が下方に成形される。As a result of this operation, the rotation of the metal lid material 2 that had been rotating and revolving together with the inner molded member 10 until then is stopped, and only the inner molded member 10 rotates, so that the metal lid material 2 is moved downward along the threaded groove 34 of the inner molded member 10. molded.
この成形された金属蓋材料2は移送部材11の下降で再
び回転盤21上に載置され、排出ターレット7により螺
条成形機1から送り出される。The formed metal lid material 2 is placed on the rotary disk 21 again by the lowering of the transfer member 11, and is sent out from the screw forming machine 1 by the discharge turret 7.
このように本発明によるときは内側成形部材の外径を金
属蓋材料よりもわずかに小さく形成し該内側成形部材の
軸方向にこれを介して移送部材と押圧部材とを配置し、
該移送部材を上昇させることにより金属蓋材料を内側成
形部材に嵌着すと共に該移送部材を該押圧部材と共に下
降させることにより内側成形部材の自転動作により密着
状態の蓋材料を抜は出させて螺条の形成を完了した金属
蓋材料を取外すようにしたので、内側成形部材と殆んど
同寸法の金属蓋材料に螺条を形成しても自動的に成形部
材から取外すことが出来、また内側成形部材と金属蓋材
料との寸法差がないので精密な螺条成形加工を行なうこ
とができ、多数条の螺条を形成出来る等の効果を有する
。As described above, according to the present invention, the outer diameter of the inner molded member is formed to be slightly smaller than the metal lid material, and the transfer member and the pressing member are disposed therebetween in the axial direction of the inner molded member,
By raising the transfer member, the metal lid material is fitted onto the inner molded member, and by lowering the transfer member together with the pressing member, the tightly attached lid material is pulled out by the rotational action of the inner molded member. Since the metal lid material on which the threads have been formed can be removed, even if the threads are formed on the metal lid material with almost the same dimensions as the inner molded member, they can be automatically removed from the molded member. Since there is no dimensional difference between the inner molded member and the metal lid material, precise thread forming can be performed, and a large number of threads can be formed.
第1図は本発明装置の実施例の全体平面図、第2図は第
1図の■−■線截線面断面図3図は移送部材部分の拡大
裁断側面図、第4図は内側及び外側成形部材並に押圧部
材の拡大載断面図、第5図は第4図のv−v線部分の底
面図、第6図及び第7図は夫々螺条成形前と螺条成形後
の金属蓋材料の斜視図である。
2・・・・・・金属蓋材料、10・・・・・・内側成形
部材、11・・・・・・移送部材、12・・・・・・外
側成形部材、13・・・・・・押圧部材。Fig. 1 is an overall plan view of an embodiment of the device of the present invention, Fig. 2 is a cross-sectional view taken along the line An enlarged cross-sectional view of the outer molded member and the pressing member, FIG. 5 is a bottom view taken along line v-v in FIG. 4, and FIGS. 6 and 7 show the metal before and after thread forming, respectively. FIG. 3 is a perspective view of the lid material. 2...Metal lid material, 10...Inner molded member, 11...Transfer member, 12...Outer molded member, 13... Pressing member.
Claims (1)
側成形部材とを備え、金属蓋材料を筒形の内側成形部材
に嵌着し、該内側成形部材と外側成形部材の各螺条成形
溝を互に咬合して該蓋材料に螺条を形成するようにした
ものに於て、螺条成形作動における内側成形部材の回転
方向を該内側成形部材に嵌着した蓋材料が抜は出す方向
とすると共に内側成形部材の外径を該金属蓋材料の内径
よりもわずかに小さく形成し、該内側成形部材の軸方向
の一方側に金属蓋材料を内側成形部材に嵌着すべく往動
する移動部材を設け、該軸方向の他方側に該移動部材と
の間で螺条成形後の金属蓋材料を挾持固定し乍ら移動部
材の復動と共に移動する抑圧部材を設けて成る金属蓋の
螺条成形機に於ける成形装置。1.Equipped with an inner molded member and an outer molded member each having a threaded groove formed around the periphery, a metal lid material is fitted into the cylindrical inner molded member, and each threaded molded member is formed on the inner molded member and the outer molded member. In the case where the grooves are engaged with each other to form a thread on the lid material, the direction of rotation of the inner molded member during the thread forming operation is such that the lid material fitted into the inner molded member is pulled out. direction, the outer diameter of the inner molded member is made slightly smaller than the inner diameter of the metal lid material, and the metal lid material is reciprocated on one side in the axial direction of the inner molded member to fit into the inner molded member. A metal lid is provided with a movable member on the other side in the axial direction, and a suppressing member is provided on the other side in the axial direction to clamp and fix the metal lid material after thread forming between the movable member and move with the return movement of the movable member. Forming equipment in a screw forming machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54017258A JPS5823810B2 (en) | 1979-02-19 | 1979-02-19 | Deforming device in metal lid screw forming machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54017258A JPS5823810B2 (en) | 1979-02-19 | 1979-02-19 | Deforming device in metal lid screw forming machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55109532A JPS55109532A (en) | 1980-08-23 |
JPS5823810B2 true JPS5823810B2 (en) | 1983-05-17 |
Family
ID=11938928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54017258A Expired JPS5823810B2 (en) | 1979-02-19 | 1979-02-19 | Deforming device in metal lid screw forming machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5823810B2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5212677U (en) * | 1975-07-15 | 1977-01-28 |
-
1979
- 1979-02-19 JP JP54017258A patent/JPS5823810B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5212677U (en) * | 1975-07-15 | 1977-01-28 |
Also Published As
Publication number | Publication date |
---|---|
JPS55109532A (en) | 1980-08-23 |
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