JP2530889B2 - Resin sheet cutting device - Google Patents
Resin sheet cutting deviceInfo
- Publication number
- JP2530889B2 JP2530889B2 JP63178668A JP17866888A JP2530889B2 JP 2530889 B2 JP2530889 B2 JP 2530889B2 JP 63178668 A JP63178668 A JP 63178668A JP 17866888 A JP17866888 A JP 17866888A JP 2530889 B2 JP2530889 B2 JP 2530889B2
- Authority
- JP
- Japan
- Prior art keywords
- resin sheet
- cut
- cutting device
- pressing
- continuous
- 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 - Fee Related
Links
Landscapes
- Nonmetal Cutting Devices (AREA)
- Discharge By Other Means (AREA)
Description
【発明の詳細な説明】 (産業上の利用分野) 本発明は、軟質あるいは半硬質の長い樹脂シートを巻
いて成る連続樹脂シートロールから樹脂シートを引き出
し所定長さに切断した後移送して所定位置に固定するの
に好適な装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention draws a resin sheet from a continuous resin sheet roll formed by winding a soft or semi-rigid long resin sheet, cuts it to a predetermined length, and then transfers it to a predetermined length. It relates to a device suitable for fixing in position.
(従来技術と問題点) 近年、連続樹脂シートロールから樹脂シートを引き出
した後所定長さに切断して成形することが試みられてき
ているが、樹脂シートは、樹脂シートの巻きぐせあるた
め所定長さに切断すると、元の状態に戻ろうとしてカー
ルしてしまい、切断した樹脂シートを所定位置に固定す
ることができなくなり、その後の工程に対処することが
困難になる問題が生じており、そのため従来は、一般に
連続成形した後に樹脂シートを切断するようにしてお
り、材料の歩留りが悪い問題があった。(Prior Art and Problems) In recent years, it has been attempted to pull out a resin sheet from a continuous resin sheet roll and then cut the resin sheet to a predetermined length to form the resin sheet. When cut to length, it curls to return to the original state, it becomes impossible to fix the cut resin sheet in a predetermined position, there is a problem that it becomes difficult to deal with the subsequent steps, Therefore, conventionally, the resin sheet is generally cut after continuous molding, which causes a problem of poor material yield.
(発明の目的) 本発明は、上記の事情に鑑みてなされたもので、連続
樹脂シートロールから樹脂シートを引き出して所定長さ
に切断するとともに切断された樹脂シートを、カール現
象を阻止して所定位置に固定できる装置を提供すること
を目的とする。(Object of the Invention) The present invention has been made in view of the above circumstances, and pulls out the resin sheet from the continuous resin sheet roll and cuts the resin sheet to a predetermined length, and prevents the curled phenomenon from occurring in the cut resin sheet. An object is to provide a device that can be fixed in place.
(問題点を解決するための手段) 上記目的を達成するために、本発明における連続樹脂
シートロールからの樹脂シート切り出し装置は、樹脂シ
ート送り出し装置で送り出される樹脂シートの先端を挟
持する挟持手段と、該挟持手段を水平方向へ移動させる
挟持手段移送装置と、引き出された樹脂シートを所定個
所で切断する樹脂シート切断装置と、該樹脂シート切断
装置により切断された樹脂シートを支持する支持部材
と、該支持部材上の切断された樹脂シートの両端側部を
押し下げる押え機構とを備えたことを特徴とするもので
ある。(Means for Solving the Problems) In order to achieve the above object, a resin sheet cutting device from a continuous resin sheet roll according to the present invention is provided with a holding means for holding the leading end of the resin sheet fed by the resin sheet feeding device. A clamping means transfer device for moving the clamping means in a horizontal direction, a resin sheet cutting device for cutting the drawn resin sheet at a predetermined position, and a supporting member for supporting the resin sheet cut by the resin sheet cutting device. And a pressing mechanism for pressing down both end portions of the cut resin sheet on the supporting member.
(作用) 上記のように構成された樹脂シート切り出し装置は、
連続樹脂ロールの樹脂シートを挟持手段及び移送装置に
より引き出した後所定個所にて樹脂シート切断装置によ
り切断し、かつ切断された樹脂シートを支持部材で支持
し、その後、当該樹脂シートを所定位置まで移送した後
樹脂シートの両端側部を押え部材で押し下げて樹脂シー
トのカール現象を阻止すると同時に樹脂シートを固定す
るように働く。(Operation) The resin sheet cutting device configured as described above is
After the resin sheet of the continuous resin roll is pulled out by the sandwiching means and the transfer device, it is cut by the resin sheet cutting device at a predetermined position, and the cut resin sheet is supported by the supporting member, and then the resin sheet is moved to a predetermined position. After the transfer, the both ends of the resin sheet are pushed down by the pressing members to prevent the curling phenomenon of the resin sheet and at the same time to fix the resin sheet.
(実施例) 実施例について図面を参照して説明すると、第1図に
おいて(1)は連続樹脂シートロールから樹脂シート
(S)を水平状態にして送り出す樹脂シート送り出し装
置であり、該樹脂シート送り出し装置(1)は、上下に
対向して軸着された駆動ローラ(2a)と押えローラ(2
b)、および支持部材(3)で支持された樹脂シート
(S)を押える押え板ばね(4)とで構成されている。
また、樹脂シート送り出し装置(1)の送り出し側前方
(右側)の上方には右方へ水平に延び枠状のフレーム
(5)が固定配設され、該フレーム(5)の下面には両
側面に溝を刻設した一対のレール(6)が左右方向に延
びて装着されている。該レール(6)には可動部材
(7)がレール(6)に沿って摺動自在に係合され、該
可動部材(7)には、樹脂シート(S)の先端を挟持す
る挟持手段(8)が装着されており、該挟持手段(8)
は、ブラケット(9)を介して可動部材(7)に固設さ
れた板状の固定爪(10)と、可動部材(7)に装着した
下向きシリンダ(11)により昇降されかつ可動部材
(7)とブラケット(9)の間に固設したガイドピン
(12)とによりガイドされる可動爪(13)とで構成され
ている。そして、固定爪(10)の上面レベルは前記支持
部材(3)のそれより若干低くなつている。(Example) An example will be described with reference to the drawings. In FIG. 1, (1) is a resin sheet feeding device that feeds a resin sheet (S) in a horizontal state from a continuous resin sheet roll. The device (1) comprises a driving roller (2a) and a pressing roller (2
b) and a pressing leaf spring (4) for pressing the resin sheet (S) supported by the supporting member (3).
A frame-shaped frame (5) horizontally extending rightward is fixedly disposed above the front side (right side) of the resin sheet feeding device (1) on the feeding side, and both sides of the frame (5) are fixed to the lower surface. A pair of rails (6) having grooves formed therein are attached so as to extend in the left-right direction. A movable member (7) is slidably engaged with the rail (6) along the rail (6), and the movable member (7) holds the tip of the resin sheet (S) by a holding means ( 8) is attached, and the holding means (8)
Is lifted and lowered by a plate-shaped fixed claw (10) fixedly mounted on the movable member (7) via a bracket (9) and a downward cylinder (11) attached to the movable member (7). ) And a movable claw (13) guided by a guide pin (12) fixed between the bracket (9). The upper surface level of the fixed claw (10) is slightly lower than that of the support member (3).
また、フレーム(5)上面の左右両側中央部には鎖歯
車(14)(15)が回転軸(16)(17)および軸受(18)
(18)、(19)(19)を介して回転可能に配設され、該
鎖歯車(14)(15)にはローラチエン(20)が掛け渡さ
れており、該ローラチエン(20)の両端は前記可動部材
(7)にブラケット(21)および牽引ボルト(22)(2
2)を介して連結されていて、挟持手段(8)を左右方
向へ水平移動させる挟持手段移送装置(37)が構成され
ている。そして、一方の回転軸(17)にはロータリーエ
ンコーダを付設した減速機付モータ(図示せず)の出力
軸が連結されていて、この減速機付モータの正逆回転に
より挟持手段(8)は可動部材(7)を介して左右へ往
復移動するように構成されている。また、前記樹脂シー
ト送り出し装置(1)の送り出し側前方(右側)の下方
には樹脂シート切断装置(23)が昇降可能に配設されて
おり、該樹脂シート切断装置(23)は、モータ(24)に
取付けられた回転式カッター(25)と、樹脂シート
(S)を載せる支持台(36)と、該モータ(24)、カッ
ター(25)等を前後方向へ低速移動させる移送機構(2
6)とで構成されており、支持台(36)の上面は前記固
定爪(10)の下面より下に位置している。また樹脂シー
ト切断装置(23)の直上方位置には、樹脂シート切断装
置(23)で切断される樹脂シート(S)を支持台(36)
上に押し付ける押付け機構(27)が枠状フレーム(5a)
に装着されて配設されており、該押付け機構(27)は、
フレーム(5a)に下向きに装着されたシリンダ(29)
と、該シリンダ(29)のピストンロッドに装着されて下
面に溝を刻設した押え部材(28)とで構成されている。
また前記フレーム(5)の下方には支持台(36)と略同
一レベルで水平に延びて切断された樹脂シート(S)を
支持する板状の支持部材(30)が固定配設されている。
また、フレーム(5)には支持部材(30)上の切断され
た樹脂シート(S)の両端側部を所要レベルまで押し下
げる押え機構(31)が装着されており、該押え機構(3
1)は、支持部材(30)の両側外方の上方に配置されて
左右方向へ延びる一対の押え部材(32)と、フレーム
(5)に垂設されて押え部材(32)(32)の左側を回動
可能に保持する一対の固定フレーム(33)と、フレーム
(5)に2本のシリンダ(34)(34)を介して昇降可能
に配設されかつその下端に前記押え部材(32)(32)の
右側を回動可能に保持した門型状の可動フレーム(35)
とで構成されており、該押え機構(31)の押え部材(3
2)(32)は樹脂シート(S)の両端側部を固定爪(1
0)の下面より下のレベルまで押し下げることができる
ようになっている。Further, chain gears (14) and (15) are provided on the upper and lower sides of the upper surface of the frame (5) on the rotating shafts (16) and (17) and bearings (18)
(18), (19) and (19) are rotatably arranged, and the chain gears (14) and (15) are spanned by roller chains (20), and both ends of the roller chains (20) are The movable member (7) has a bracket (21) and a traction bolt (22) (2).
A clamping means transfer device (37) that is connected via 2) and horizontally moves the clamping means (8) in the left-right direction is configured. An output shaft of a motor (not shown) with a reducer having a rotary encoder is connected to one of the rotating shafts (17), and the clamping means (8) is rotated by the forward and reverse rotation of the motor with the reducer. It is configured to reciprocate left and right via the movable member (7). In addition, a resin sheet cutting device (23) is disposed below the front (right side) of the resin sheet feeding device (1) on the feeding side so that the resin sheet cutting device (23) can move up and down. The rotary cutter (25) attached to the unit (24), the support base (36) on which the resin sheet (S) is placed, and the transfer mechanism (2) for moving the motor (24), the cutter (25), etc. in the front-back direction at low speed
6) and the upper surface of the support base (36) is located below the lower surface of the fixed claw (10). Further, a resin sheet (S) cut by the resin sheet cutting device (23) is provided directly above the resin sheet cutting device (23) with a support base (36).
The pressing mechanism (27) that presses upward is the frame-like frame (5a)
The pressing mechanism (27) is attached to the
Cylinder (29) mounted downward on the frame (5a)
And a pressing member (28) mounted on the piston rod of the cylinder (29) and having a groove formed in the lower surface.
Further, below the frame (5), a plate-like support member (30) for horizontally supporting and cutting the cut resin sheet (S) at substantially the same level as the support base (36) is fixedly arranged. .
Further, the frame (5) is provided with a holding mechanism (31) for pushing down both ends of the cut resin sheet (S) on the supporting member (30) to a required level, and the holding mechanism (3
1) is composed of a pair of holding members (32) arranged above both sides of the support member (30) and extending in the left-right direction, and a holding member (32) (32) vertically installed on the frame (5). A pair of fixed frames (33) that rotatably holds the left side, and a pair of fixed frames (33) that are vertically movable in the frame (5) via two cylinders (34) (34) and have the lower end of the pressing member (32). ) (32) A gantry-shaped movable frame (35) that holds the right side of the rotatably
And a pressing member (3) of the pressing mechanism (31).
2) (32) fix both ends of the resin sheet (S) with fixing claws (1
It is possible to push down to the level below the bottom of (0).
次にこのように構成された装置の作用について説明す
る。第1図に示す状態において、図示しない減速機付モ
ータの逆転駆動により回転軸(17)および鎖歯車(15)
を逆回転させてローラチエン(20)により挟持手段
(8)を左方へ牽引し、可動爪(13)・固定爪(10)間
に樹脂シート(S)の先端が進入する位置まで移動させ
る。次いで、挟持手段(8)のシリンダ(11)を伸長作
動して樹脂シート(S)の先端を可動爪(13)と固定爪
(10)とで挟持し、続いて樹脂シート送り出し装置
(1)の駆動ローラ(2a)を駆動して樹脂シート(S)
を送り出すとともに減速機付モータ(図示せず)の正転
駆動により挟持手段(8)を右方へ移動させて樹脂シー
ト(S)を図示しない連続樹脂シートロールから引き出
し、樹脂シート(S)を所定長さ引き出した地点で、駆
動ローラ(2a)の回転および挟持手段(8)の移動を一
時停止する。この際、樹脂シート(S)は支持部材(3
0)に支持されると共に両端側部を押え部材(32)の下
方に位置されている。次いで、押付け機構(27)のシリ
ンダ(29)の伸長作動により押え部材(28)を下降さ
せ、かつ樹脂シート切断装置(23)を上昇させて樹脂シ
ート(S)を挟持し、続いて、モータ(24)の駆動によ
りカッタ(25)を回転させた後、当該カッタ(25)を移
送機構(26)により前後方向へ移動させて樹脂シート
(S)を切断する。樹脂シート(S)の切断完了後、シ
リンダ(29)の収縮作動により押え部材(28)を上昇さ
せ、かつ樹脂シート切断装置(23)を下降させて樹脂シ
ート(S)の挟持状態を解き、続いて、さらに図示しな
い減速機付モータを所要時間駆動して切断された樹脂シ
ート(S)を所定位置まで移送する。なお、この場合も
当該樹脂シート(S)は支持部材(30)上に載っている
と共にその両端側部は押え部材(32)の下方に位置され
ている。次いで、シリンダ(11)の収縮作動により可動
爪(11)を上昇させて樹脂シート(S)の挟持状態を解
いた後、図示しない減速機付モータをさらに所要時間駆
動して可動爪(13)・固定爪(10)を樹脂シート(S)
から離し、続いて、シリンダ(34)(34)の収縮作動に
より可動フレーム(35)を介して押え部材(32)(32)
の右側を下降させる。これにより、可動爪(13)・固定
爪(10)による挟持状態から解放されて元の状態にカー
ルしようとする樹脂シート(S)の両端側部は、押え部
材(32)により押えられてそのカール現象を阻止される
と共に固定爪(10)の下面より低くなるように押し下げ
られて、固定爪(10)等の左方への移動を可能にされ
る。次いで、図示しない減速機付モータの逆転駆動によ
り挟持手段(8)を左方に移動させて次の樹脂シート
(S)のために待機し、他方、支持部材(30)上の樹脂
シート(S)を図示しない押し下げ手段により押し下げ
て樹脂シート(S)の耳端を図示しないチエンコンベヤ
の針部材に刺し込み固定する。次いで、シリンダ(34)
(34)の伸長作動により押え部材(32)(32)の右側を
上昇させて樹脂シート(S)を自由にした後、図示しな
いチエンコンベヤにより樹脂シート(S)を所定位置に
搬送して1サイクルを完了する。Next, the operation of the apparatus thus configured will be described. In the state shown in FIG. 1, the rotation shaft (17) and the chain gear (15) are driven by the reverse rotation of a motor with a reducer (not shown).
Is reversely rotated and the holding means (8) is pulled to the left by the roller chain (20) and moved to a position where the tip of the resin sheet (S) enters between the movable claw (13) and the fixed claw (10). Then, the cylinder (11) of the holding means (8) is extended to hold the tip of the resin sheet (S) between the movable claw (13) and the fixed claw (10), and subsequently the resin sheet feeding device (1). Resin sheet (S) by driving the drive roller (2a)
And a motor (not shown) with a speed reducer to rotate the clamping means (8) to the right to pull out the resin sheet (S) from a continuous resin sheet roll (not shown) to remove the resin sheet (S). The rotation of the drive roller (2a) and the movement of the sandwiching means (8) are temporarily stopped at a point where the roller is pulled out by a predetermined length. At this time, the resin sheet (S) is attached to the support member (3
0) and both end portions are located below the pressing member (32). Next, the pressing member (28) is lowered by the extension operation of the cylinder (29) of the pressing mechanism (27), and the resin sheet cutting device (23) is raised to clamp the resin sheet (S), and subsequently the motor After the cutter (25) is rotated by the drive of (24), the cutter (25) is moved in the front-rear direction by the transfer mechanism (26) to cut the resin sheet (S). After the completion of cutting the resin sheet (S), the pressing member (28) is raised by the contraction operation of the cylinder (29), and the resin sheet cutting device (23) is lowered to release the sandwiched state of the resin sheet (S). Subsequently, a motor with reduction gear (not shown) is driven for a required time to transfer the cut resin sheet (S) to a predetermined position. In this case as well, the resin sheet (S) is placed on the support member (30) and both ends thereof are located below the holding member (32). Next, after the movable claw (11) is lifted by the contraction operation of the cylinder (11) to release the sandwiched state of the resin sheet (S), a motor with a reduction gear (not shown) is further driven for a required time to move the movable claw (13).・ Fixing claw (10) with resin sheet (S)
And then the pressing members (32) (32) through the movable frame (35) by the contraction operation of the cylinders (34) (34).
Lower the right side of. As a result, both ends of the resin sheet (S), which is released from the state of being clamped by the movable claw (13) and the fixed claw (10) and is about to be curled back to its original state, are pressed by the pressing member (32). The curl phenomenon is prevented and the lower surface of the fixed claw (10) is pushed down so that the fixed claw (10) and the like can be moved to the left. Next, the holding means (8) is moved to the left by the reverse rotation of a motor with a speed reducer (not shown) to stand by for the next resin sheet (S), while the resin sheet (S) on the support member (30) is waited for. ) Is pushed down by a pushing-down means (not shown) to insert and fix the edge of the resin sheet (S) into the needle member of the chain conveyor (not shown). Then the cylinder (34)
The right side of the pressing members (32) and (32) is lifted by the extension operation of (34) to free the resin sheet (S), and the resin sheet (S) is conveyed to a predetermined position by a chain conveyor (not shown). Complete the cycle.
なお、上記の実施例では、挟持手段移送装置(37)
は、可動部材(7)がローラチエン(20)により左右方
向へ牽引移動される構造になっているが、可動部材
(7)、挟持手段(8)を任意の位置に停止できる油圧
シリンダにしてもよい。また、樹脂シート切断装置(2
3)のカッタ(25)は回転式であるが、これに限定され
るものではなく、慣用の刃物でもよい。さらに押付け機
構(27)は、樹脂シート(S)の性質あるいは樹脂シー
ト切断装置(23)の性能からみて、不要なら適宜省略し
てもよい。Incidentally, in the above embodiment, the clamping means transfer device (37)
Has a structure in which the movable member (7) is pulled and moved in the left-right direction by the roller chain (20), but a hydraulic cylinder that can stop the movable member (7) and the sandwiching means (8) at any position may be used. Good. Also, the resin sheet cutting device (2
The cutter (25) of 3) is a rotary type, but it is not limited to this and may be a commonly used blade. Further, the pressing mechanism (27) may be appropriately omitted if it is unnecessary in view of the properties of the resin sheet (S) or the performance of the resin sheet cutting device (23).
(発明の効果) 以上の説明からもあきらかなように本発明によれば、
切断した樹脂シート(S)の両端側部を押し下げて樹脂
シート(S)が元の状態にカールするのを阻止すること
ができる上に、所定位置に固定することができるため、
その後の成形工程を円滑にして容易に行うことができる
優れた効果を奏する。(Effects of the Invention) As is apparent from the above description, according to the present invention,
Since both ends of the cut resin sheet (S) can be pushed down to prevent the resin sheet (S) from curling in its original state, it can be fixed in place.
It has an excellent effect that the subsequent molding process can be performed smoothly and easily.
図面は本発明の一実施例を示し、第1図は一部を省略し
た正面図、第2図は一部を省略した平面図である。 (1):樹脂シート送り出し装置 (2a):駆動ローラ (2b):押えローラ (3):支持部材 (4):押え板ばね (8):挟持手段 (14),(15):鎖歯車 (20):ローラチエン (23):樹脂シート切断装置 (30):支持部材 (31):押え機構 (37):挟持手段移送装置The drawings show one embodiment of the present invention, FIG. 1 is a front view with a part omitted, and FIG. 2 is a plan view with a part omitted. (1): Resin sheet feeding device (2a): Driving roller (2b): Pressing roller (3): Supporting member (4): Pressing leaf spring (8): Holding means (14), (15): Chain gear ( 20): Roller chain (23): Resin sheet cutting device (30): Support member (31): Pressing mechanism (37): Clamping means transfer device
Claims (1)
平状態にして送り出す樹脂シート送り出し装置と、該樹
脂シート送り出し装置によって送り出された前記樹脂シ
ートの先端を挟持可能な挟持手段と、該挟持手段を水平
方向へ移動させて連続樹脂シートロールから樹脂シート
を引き出す挟持手段移送装置と、前記樹脂シート送り出
し装置の送り出し側前方に配設されて連続樹脂シートロ
ールから引き出された樹脂シートを所定個所で切断する
樹脂シート切断装置と、前記挟持手段の移動方向に沿っ
て延びて前記樹脂シート切断装置により切断された樹脂
シートを支持する支持部材と、該支持部材の両側上方に
上下動可能に配設されて支持部材上の切断された樹脂シ
ートの両端側部を押し下げる押え機構と、を具備したこ
とを特徴とする樹脂シート切り出し装置。1. A resin sheet feeding device for feeding a resin sheet in a horizontal state from a continuous resin sheet roll, a holding means capable of holding the leading end of the resin sheet fed by the resin sheet sending device, and the holding means. Clamping means transfer device for moving the resin sheet horizontally to pull out the resin sheet from the continuous resin sheet roll, and cutting the resin sheet pulled out from the continuous resin sheet roll, which is disposed in front of the delivery side of the resin sheet delivery device at a predetermined position. A resin sheet cutting device, a support member that extends along the moving direction of the holding means and supports the resin sheet cut by the resin sheet cutting device, and is arranged above and below the support member so as to be vertically movable. And a pressing mechanism for pressing down both end portions of the cut resin sheet on the supporting member. Sheet cut-out device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63178668A JP2530889B2 (en) | 1988-07-18 | 1988-07-18 | Resin sheet cutting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63178668A JP2530889B2 (en) | 1988-07-18 | 1988-07-18 | Resin sheet cutting device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0228460A JPH0228460A (en) | 1990-01-30 |
JP2530889B2 true JP2530889B2 (en) | 1996-09-04 |
Family
ID=16052479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63178668A Expired - Fee Related JP2530889B2 (en) | 1988-07-18 | 1988-07-18 | Resin sheet cutting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2530889B2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2558977Y2 (en) * | 1990-12-30 | 1998-01-14 | 日本金銭機械株式会社 | Bill handling equipment |
JP2711987B2 (en) * | 1993-10-01 | 1998-02-10 | 新東工業株式会社 | Equipment for correcting sheet sheet deviation |
JP4490761B2 (en) * | 2004-08-17 | 2010-06-30 | Hoya株式会社 | Mold press mold and optical element manufacturing method |
DE102011110038B3 (en) * | 2011-08-12 | 2012-12-06 | Baumüller Nürnberg GmbH | Method and device for processing a material web |
JP2016020021A (en) * | 2014-07-15 | 2016-02-04 | 曙機械工業株式会社 | Cutting device |
-
1988
- 1988-07-18 JP JP63178668A patent/JP2530889B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0228460A (en) | 1990-01-30 |
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---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |