JP2004345051A - Cylindrical base element gripping device and gripping method - Google Patents

Cylindrical base element gripping device and gripping method Download PDF

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Publication number
JP2004345051A
JP2004345051A JP2003146649A JP2003146649A JP2004345051A JP 2004345051 A JP2004345051 A JP 2004345051A JP 2003146649 A JP2003146649 A JP 2003146649A JP 2003146649 A JP2003146649 A JP 2003146649A JP 2004345051 A JP2004345051 A JP 2004345051A
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Japan
Prior art keywords
claw
gripping
driven
cylindrical base
cylindrical
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Pending
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JP2003146649A
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Japanese (ja)
Inventor
Teruji Tatsushima
照璽 立嶋
Kenji Furuya
賢二 古屋
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Ricoh Co Ltd
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Ricoh Co Ltd
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Publication date
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Priority to JP2003146649A priority Critical patent/JP2004345051A/en
Publication of JP2004345051A publication Critical patent/JP2004345051A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a gripping device and method for gripping a cylindrical base element of various sizes. <P>SOLUTION: The cylindrical base element gripping device having at least a mechanical gripping mechanism, comprises three driven gear wheels 3 disposed on not less than three equal parts in a circumferential direction of a driving shaft gear wheel 2, and claws 6 coupled with arms 5 from three driven shafts 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、異なる内径サイズに対応する円筒状基体を把持する把持装置ならびに把持方法に関するものである。
【0002】
【従来の技術】
従来から円筒状基体を把持する把持装置および方法は種々検討されている(例えば、特許文献1ないし3参照)。
このような、従来種々行われている機械的なメカニズムによる把持装置及び方法は、例えば、特許文献1に記載のように、風船体と着脱式上下スペーサで各種サイズに対応する方法や、特許文献2に記載のように、異なるサイズの風船体を連結することで各種サイズに対応する方法である。
また、特許文献3に記載のように、リンク部材により連結された内径保持アームが放射状に開くことで各種サイズに対応する方法も知られている。
しかしながら、従来の把持装置、把持方法の多くは、把持できる内径の範囲が限定され、この範囲から外れる内径のサイズには異なる装置を用意しなければならず、装置コスト増、把持作業の繁雑化という不具合がある。
【特許文献1】特開平8−192986号公報
【特許文献2】特許第2635117号
【特許文献3】特開平6−328018号公報
【0003】
【発明が解決しようとする課題】
上記したような従来の方法では、例えば、特許文献1に記載の方法は、各種サイズに対応したスペーサを着脱しなければならず、特許文献2に記載の方法は内径の種類が規定の範囲を外れた場合に連結する機構も増やさなければならず装置が大型化してしまうという問題があった。
また、特許文献3に記載の方法はφ40程度以下の内径では製作が困難であり、製作したとしても各部品を細くしなければならず大口径厚肉の円筒状基体を把持するには強度が不足してしまうという問題があった。
電子写真装置用の感光体ドラムにおいては 主として浸漬塗工を行うために様々な直径の素管へ対応することが求められているがいまだ十分とはいえない。
そこで本発明の目的は、上記の問題点を解決するために、各種サイズの円筒状基体を把持するための把持装置ならびに把持方法を提供することにある。
【0004】
【課題を解決するための手段】
前記の課題を解決するために、請求項1記載の発明では、少なくとも機械的な把持機構を有する円筒状基体把持装置において、
前記把持機構は、駆動軸歯車と、該駆動軸歯車の外径側において噛合しつつ周方向に3等分以上に配置された少なくとも3つの従動用歯車と、各従動用歯車の軸心に固定される従動軸と、各従動軸と一体化され且つ各従動軸を中心として揺動するアームと、各アームから軸方向へ延びるツメと、を備えることを特徴とする。
請求項2記載の発明では、前記ツメの表面が弾性部材からなる請求項1に記載の円筒状基体把持装置を主要な特徴とする。
請求項3記載の発明では、前記ツメが伸縮自在である請求項1または2のいずれか1項記載の円筒状基体把持装置を主要な特徴とする。
請求項4記載の発明では、前記ツメが自転するコロ状である請求項1ないし3のいずれか1項記載の円筒状基体把持装置を主要な特徴とする。
請求項5記載の発明では、前記コロ状のツメの表面が弾性体である請求項4記載の円筒状基体把持装置を主要な特徴とする。
請求項6記載の発明に係る円筒状基体把持方法では、機械的な把持機構による円筒状基体の内径把持方法において、駆動軸歯車の外周に噛合する3つ以上の従動用歯車の回動力を各従動用歯車の従動軸を介して把持用のツメに伝達することにより各従動軸を介して各ツメを揺動させることを特徴とする。
請求項7記載の発明では、前記ツメの表面が弾性部材からなる請求項6記載の円筒状基体把持方法を主要な特徴とする。
請求項8記載の発明では、前記ツメが伸縮自在である請求項6または7のいずれか1項記載の円筒状基体把持方法を主要な特徴とする。
請求項9記載の発明では、前記ツメが自転するコロ状である請求項6ないし8のいずれかに1項記載の円筒状基体把持方法を主要な特徴とする。
請求項10記載の発明では、前記コロ状のツメの表面が弾性体である請求項9記載の円筒状基体把持方法を主要な特徴とする。
【0005】
【発明の実施の形態】
以下、図面により本発明の実施の形態を詳細に説明する。図1は本発明の円筒状基体把持装置の実施の形態(把持機構)を示す概略斜視図である。駆動軸1に組み込まれた駆動用歯車2を中心とした外径位置には、周方向に3等分した位置に夫々従動用歯車3および従動軸4を配置してある。
各従動軸4の先端には中心に向けて、すなわち、駆動軸1に向けてアーム5を配置しその先端にツメ6を配置してある。このツメ6の外側に弾性部材7が配置されていることによってこの弾性部材7が金属表面からなる円筒状基体に対して滑り止めとなり円筒状基体の把持が確実となる。
この円筒状基体把持装置は、機械的な把持機構を有している。この把持機構は、駆動軸1により回転駆動される駆動軸歯車2と、駆動軸歯車2の外径側において噛合しつつ周方向に3等分以上に配置された少なくとも3つの従動用歯車3と、各従動用歯車3の軸心に固定される従動軸4と、各従動軸4と一体化され且つ各従動軸4を中心として揺動するアーム5と、各アーム5から軸方向へ延びるツメ6と、を備えている。ツメ6の外周には、弾性部材7が配置されている。
従動用歯車3の回動によって従動軸4及びアーム5が一体的に回動すると、アーム先端のツメ6が従動軸4を中心として内外方向へ揺動する。このことによって、各ツメ6は円筒状基体の内径の大小に関係なく、確実に把持することが可能となる。
弾性部材7はウレタン材質などの硬質ゴム状の材質が好ましく、すべり機能を高めるには 横筋などを付ければなお良い。
図2は円筒状基体内に配置した図1の把持装置を示す概略断面図である。図2に示すように中心に位置する駆動軸1を矢印方向に回転させることで駆動用歯車2が回転し駆動用歯車2と噛み合って配置された従動用歯車3が駆動軸1とは逆方向に回転する。
そのことで従動軸4の回転に合わせて中心方向を向いていたツメ6を連結したアーム5がツメ6を中心から外側に開かせることで、把持部であるツメ6が円筒状基体8内径に接触し把持することとなる。駆動軸の駆動は、電気あるいは空気制御どのようなものでも良い。
【0006】
図3は図1の把持装置の駆動歯車および従動歯車を真上から見た平面図である。図4はロータリーアクチュエータを備えた形で示す図1の把持装置の概略断面図である。図5は図1の把持装置の弾性部材およびアームを真下から見た底面図である。
図4において、ロータリーアクチュエータ9およびベアリング10を除いては図1の構成と同一であるので説明を省略する。
図6はアームの動きを示す概略図である。アーム5は従動軸4を中心として0〜180°の範囲で動くことによって種々の円筒径に対応することができる。ツメ6は、伸縮自在とすることで円筒状基体8の長さに応じて確実な保持をすることができる。
また、この場合に、ツメ6は先端をコロとすることによって円筒状基体8の保持ならびにリリースを容易に行うことができる。
図4に戻って、本発明の実施の形態を具体的な数値を付して説明するが、これらにより本発明の技術的範囲が限定されるものではない。
図4に示す把持装置で円筒状基体8の把持を行った。この場合に、
・駆動軸1と従動軸4の中心間距離36mm、
・従動軸4とツメ6の中心間距離28.5mm、
・ツメ6に取り付けられた弾性部材7の外径10mm、
・回転の駆動は空気圧作動のロータリーアクチュエータ9を使用、
の条件によって、当該把持装置により各種円筒サイズにおいて円筒状基体の把持を行った。
結果は以下の表の通りであり、

Figure 2004345051
いずれも良好な把持ができた。内径特有の把持装置に比べて、装置切り換え時間が少なくて済んだ。
【0007】
【発明の効果】
以上説明したように、請求項1によれば、本発明の把持装置の使用によって種々のサイズの円筒状基体の把持が可能となる。
請求項2によれば、ツメの表面が弾性部材からなるので、円筒状基体の把持が確実となるという効果を奏する把持装置を提供できる。
請求項3によれば、前記ツメが伸縮自在であるので、長尺の円筒状基体の確実な把持ができる。
請求項4によれば、ツメが自転するコロ状であるので、円筒状基体のリリースを容易に行うことができる。
請求項5によれば、コロ状のツメの表面が弾性体であるので、円筒状基体のリリース容易さと把持の確実さの両立ができる。
請求項6によれば、本発明の把持方法の使用によって種々のサイズの円筒状基体の把持が可能となる。
請求項7によれば、ツメの表面が弾性部材からなるので、円筒状基体の把持が確実となるという効果を奏する把持方法を提供できる。
請求項8によれば、前記ツメが伸縮自在であるので、長尺の円筒状基体の確実な把持ができる。
請求項9によれば、ツメが自転するコロ状であるので、円筒状基体のリリースを容易に行うことができる。
請求項10によれば、コロ状のツメの表面が弾性体であるので、円筒状基体のリリース容易さと把持の確実さの両立ができる。
【図面の簡単な説明】
【図1】本発明の円筒状基体把持装置の実施の形態を示す概略斜視図である。
【図2】円筒状基体内に配置した図1の把持装置を示す概略断面図である。
【図3】図1の把持装置の駆動歯車および従動歯車を真上から見た平面図である。
【図4】ロータリーアクチュエータを備えた形で示す図1の把持装置の概略断面図である。
【図5】図1の把持装置の弾性部材およびアームを真下から見た底面図である。
【図6】アームの動きを示す概略図である。
【符号の説明】
1 駆動軸
2 駆動用歯車
3 従動用歯車
4 従動軸
5 アーム
6 ツメ
7 弾性部材
8 円筒状基体[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a gripping device and a gripping method for gripping cylindrical substrates corresponding to different inner diameter sizes.
[0002]
[Prior art]
Conventionally, various gripping devices and methods for gripping a cylindrical substrate have been studied (for example, see Patent Documents 1 to 3).
As described above, for example, as described in Patent Document 1, a gripping device and a method using a mechanical mechanism that have been conventionally performed variously include a method of responding to various sizes with a balloon body and a detachable upper and lower spacer, and Patent Document 1. As described in 2, the method is adapted to various sizes by connecting balloons of different sizes.
Further, as described in Patent Literature 3, there is also known a method of coping with various sizes by radially opening an inner diameter holding arm connected by a link member.
However, many of the conventional gripping devices and gripping methods have a limited range of inner diameter that can be gripped, and a different device must be prepared for an inner diameter that is out of this range, which increases device cost and complicates gripping work. There is a problem.
[Patent Document 1] Japanese Patent Application Laid-Open No. Hei 8-192988 [Patent Document 2] Japanese Patent No. 2635117 [Patent Document 3] Japanese Patent Application Laid-Open No. 6-328018 [0003]
[Problems to be solved by the invention]
In the conventional method as described above, for example, in the method described in Patent Document 1, spacers corresponding to various sizes must be attached and detached, and in the method described in Patent Document 2, the type of inner diameter falls within a specified range. In the case of disengagement, there is a problem in that the number of coupling mechanisms must be increased, and the device becomes large.
Further, the method described in Patent Document 3 is difficult to manufacture with an inner diameter of about φ40 or less, and even if it is manufactured, each part must be made thinner and a large-diameter thick cylindrical base has a high strength to grip. There was a problem of shortage.
Photoreceptor drums for electrophotographic devices are required to be able to handle various diameters of pipes mainly for dip coating, but this is still not sufficient.
Therefore, an object of the present invention is to provide a gripping device and a gripping method for gripping cylindrical substrates of various sizes to solve the above problems.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, in the invention according to claim 1, in a cylindrical substrate gripping device having at least a mechanical gripping mechanism,
The gripping mechanism is fixed to a drive shaft gear, at least three driven gears arranged at least three equally in the circumferential direction while meshing on the outer diameter side of the drive shaft gear, and fixed to the axis of each driven gear. A driven shaft, an arm integrated with each driven shaft and swinging about each driven shaft, and a claw extending from each arm in the axial direction.
According to a second aspect of the present invention, the main feature of the cylindrical substrate holding device according to the first aspect is that the surface of the claw is made of an elastic member.
According to a third aspect of the present invention, the main feature of the cylindrical substrate holding device according to any one of the first and second aspects is that the claw is extendable.
According to a fourth aspect of the present invention, a main feature of the cylindrical substrate gripping device according to any one of the first to third aspects is that the claw has a shape of a rotating roller.
According to a fifth aspect of the present invention, a cylindrical base holding device according to the fourth aspect is characterized in that the surface of the roller-shaped claw is an elastic body.
According to a sixth aspect of the present invention, in the method for gripping the inner diameter of a cylindrical substrate by a mechanical gripping mechanism, the rotating power of three or more driven gears meshing with the outer periphery of the drive shaft gear is adjusted. The transmission is transmitted to a gripping claw via a driven shaft of a driven gear, whereby each claw is rocked via each driven shaft.
According to a seventh aspect of the present invention, the main feature of the cylindrical substrate gripping method according to the sixth aspect is that the surface of the claw is made of an elastic member.
According to an eighth aspect of the present invention, the main feature of the cylindrical substrate gripping method according to any one of the sixth and seventh aspects is that the claw is stretchable.
According to a ninth aspect of the present invention, the main feature of the cylindrical substrate gripping method according to any one of the sixth to eighth aspects is that the claw has a shape of a rotating roller.
According to a tenth aspect of the present invention, the method according to the ninth aspect is characterized in that a surface of the roller-shaped claw is an elastic body.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic perspective view showing an embodiment (gripping mechanism) of a cylindrical substrate gripping device of the present invention. A driven gear 3 and a driven shaft 4 are disposed at an outer diameter position centered on the driving gear 2 incorporated in the drive shaft 1 at three equally divided positions in the circumferential direction.
At the end of each driven shaft 4, an arm 5 is arranged toward the center, that is, toward the drive shaft 1, and a claw 6 is arranged at the end. By disposing the elastic member 7 on the outside of the claw 6, the elastic member 7 is prevented from slipping on the cylindrical base made of a metal surface, and the grip of the cylindrical base is ensured.
This cylindrical substrate gripping device has a mechanical gripping mechanism. The gripping mechanism includes a drive shaft gear 2 that is rotationally driven by a drive shaft 1, and at least three driven gears 3 that are arranged at least three equally in the circumferential direction while meshing on the outer diameter side of the drive shaft gear 2. A driven shaft 4 fixed to the axis of each driven gear 3, an arm 5 integrated with each driven shaft 4 and swinging about the driven shaft 4, and a claw extending from each arm 5 in the axial direction. 6 is provided. An elastic member 7 is arranged on the outer periphery of the claw 6.
When the driven shaft 4 and the arm 5 rotate integrally by the rotation of the driven gear 3, the claw 6 at the tip of the arm swings inward and outward about the driven shaft 4. As a result, each claw 6 can be reliably held regardless of the inner diameter of the cylindrical base.
The elastic member 7 is preferably made of a hard rubber-like material such as a urethane material. In order to enhance the sliding function, it is better to add a horizontal stripe or the like.
FIG. 2 is a schematic sectional view showing the gripping device of FIG. 1 arranged in a cylindrical base. As shown in FIG. 2, by rotating the drive shaft 1 located at the center in the direction of the arrow, the drive gear 2 rotates, and the driven gear 3 arranged in mesh with the drive gear 2 moves in the opposite direction to the drive shaft 1. To rotate.
As a result, the arm 5 connecting the claw 6 facing the center in accordance with the rotation of the driven shaft 4 causes the claw 6 to be opened outward from the center, so that the claw 6 serving as the gripping portion is attached to the inner diameter of the cylindrical base 8. It comes into contact and grips. The drive of the drive shaft may be any electric or pneumatic control.
[0006]
FIG. 3 is a plan view of the driving gear and the driven gear of the gripping device of FIG. 1 as viewed from directly above. FIG. 4 is a schematic sectional view of the gripping device of FIG. 1 shown with a rotary actuator. FIG. 5 is a bottom view of the elastic member and the arm of the gripping device of FIG. 1 as viewed from directly below.
In FIG. 4, the configuration is the same as that of FIG. 1 except for the rotary actuator 9 and the bearing 10, and a description thereof will be omitted.
FIG. 6 is a schematic view showing the movement of the arm. The arm 5 can cope with various cylindrical diameters by moving within a range of 0 to 180 ° about the driven shaft 4. The claws 6 can be securely held in accordance with the length of the cylindrical base 8 by making the claws 6 extendable.
Also, in this case, the claw 6 can easily hold and release the cylindrical base 8 by making the tip thereof a roller.
Returning to FIG. 4, the embodiment of the present invention will be described with specific numerical values, but these do not limit the technical scope of the present invention.
The cylindrical substrate 8 was gripped by the gripping device shown in FIG. In this case,
・ Distance between centers of the drive shaft 1 and the driven shaft 4 is 36 mm,
・ The distance between the center of the driven shaft 4 and the claw 6 is 28.5 mm,
An outer diameter of the elastic member 7 attached to the claw 6 is 10 mm;
・ Pneumatically operated rotary actuator 9 is used for driving the rotation.
Under the conditions described above, the cylindrical substrate was gripped in various cylindrical sizes by the gripping device.
The results are as in the table below,
Figure 2004345051
In each case, good grip was obtained. The device switching time was shorter than that of a gripping device peculiar to the inside diameter.
[0007]
【The invention's effect】
As described above, according to the first aspect, it is possible to grip cylindrical substrates of various sizes by using the gripping device of the present invention.
According to the second aspect, since the surface of the claw is made of an elastic member, it is possible to provide a gripping device having an effect of securely gripping the cylindrical base.
According to the third aspect, since the claw is extendable and retractable, it is possible to securely hold the long cylindrical base.
According to the fourth aspect, since the claw is in the shape of a rotating roller, the cylindrical base can be easily released.
According to the fifth aspect, since the surface of the roller-shaped claw is an elastic body, it is possible to achieve both easy release of the cylindrical base and secure grip.
According to claim 6, cylindrical substrates of various sizes can be gripped by using the gripping method of the present invention.
According to the seventh aspect, since the surface of the claw is made of an elastic member, it is possible to provide a gripping method that has an effect of reliably gripping the cylindrical base.
According to the eighth aspect, since the claw is extendable and retractable, a long cylindrical base can be securely held.
According to the ninth aspect, since the claw is in the shape of a rotating roller, the cylindrical base can be easily released.
According to the tenth aspect, since the surface of the roller-shaped claw is an elastic body, it is possible to achieve both easy release of the cylindrical base and secure grip.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an embodiment of a cylindrical substrate holding device of the present invention.
FIG. 2 is a schematic sectional view showing the gripping device of FIG. 1 arranged in a cylindrical substrate.
FIG. 3 is a plan view of a driving gear and a driven gear of the gripping device of FIG. 1 as viewed from directly above.
FIG. 4 is a schematic sectional view of the gripping device of FIG. 1 shown with a rotary actuator.
5 is a bottom view of the elastic member and the arm of the gripping device of FIG. 1 as viewed from directly below.
FIG. 6 is a schematic view showing the movement of an arm.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 drive shaft 2 drive gear 3 driven gear 4 driven shaft 5 arm 6 claw 7 elastic member 8 cylindrical base

Claims (10)

少なくとも機械的な把持機構を有する円筒状基体把持装置において、
前記把持機構は、駆動軸歯車と、該駆動軸歯車の外径側において噛合しつつ周方向に3等分以上に配置された少なくとも3つの従動用歯車と、各従動用歯車の軸心に固定される従動軸と、各従動軸と一体化され且つ各従動軸を中心として揺動するアームと、各アームから軸方向へ延びるツメと、を備えることを特徴とする円筒状基体把持装置。
In a cylindrical substrate holding device having at least a mechanical holding mechanism,
The gripping mechanism is fixed to a drive shaft gear, at least three driven gears arranged at least three equally in the circumferential direction while meshing on the outer diameter side of the drive shaft gear, and fixed to the axis of each driven gear. A cylindrical base holding device comprising: a driven shaft to be driven; an arm integrated with each driven shaft and swinging about each driven shaft; and a claw extending from each arm in an axial direction.
前記ツメの表面が弾性部材からなることを特徴とする請求項1に記載の円筒状基体把持装置。The cylindrical substrate holding device according to claim 1, wherein a surface of the claw is made of an elastic member. 前記ツメが伸縮自在であることを特徴とする請求項1または2のいずれか1項記載の円筒状基体把持装置。3. The cylindrical substrate holding device according to claim 1, wherein the claw is extendable and retractable. 4. 前記ツメが自転するコロ状であることを特徴とする請求項1ないし3のいずれか1項記載の円筒状基体把持装置。The cylindrical substrate holding device according to any one of claims 1 to 3, wherein the claw has a shape of a rotating roller. 前記コロ状のツメの表面が弾性体であることを特徴とする請求項4記載の円筒状基体把持装置。The cylindrical substrate holding device according to claim 4, wherein the surface of the roller-shaped claw is an elastic body. 機械的な把持機構による円筒状基体の内径把持方法において、駆動軸歯車の外周に噛合する3つ以上の従動用歯車の回動力を各従動用歯車の従動軸を介して把持用のツメに伝達することにより各従動軸を介して各ツメを揺動させることを特徴とする円筒状基体把持方法。In the method of gripping the inner diameter of a cylindrical base by a mechanical gripping mechanism, the rotating power of three or more driven gears meshing with the outer periphery of the drive shaft gear is transmitted to the gripping claw via the driven shaft of each driven gear. (C) swinging each claw through each driven shaft. 前記ツメの表面が弾性部材からなることを特徴とする請求項6記載の円筒状基体把持方法。7. The method according to claim 6, wherein a surface of the claw is made of an elastic member. 前記ツメが伸縮自在であることを特徴とする請求項6または7のいずれか1項記載の円筒状基体把持方法。The method according to claim 6, wherein the claw is stretchable. 前記ツメが自転するコロ状であることを特徴とする請求項6ないし8のいずれかに1項記載の円筒状基体把持方法。The method according to any one of claims 6 to 8, wherein the claw has a shape of a rotating roller. 前記コロ状のツメの表面が弾性体であることを特徴とする請求項9記載の円筒状基体把持方法。The method according to claim 9, wherein the surface of the roller-shaped claw is an elastic body.
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