JPS6344650B2 - - Google Patents
Info
- Publication number
- JPS6344650B2 JPS6344650B2 JP57005555A JP555582A JPS6344650B2 JP S6344650 B2 JPS6344650 B2 JP S6344650B2 JP 57005555 A JP57005555 A JP 57005555A JP 555582 A JP555582 A JP 555582A JP S6344650 B2 JPS6344650 B2 JP S6344650B2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- suction port
- chamber
- suction
- inner diameter
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
- B65H3/0808—Suction grippers
- B65H3/0883—Construction of suction grippers or their holding devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【発明の詳細な説明】
本発明は自動枚葉給紙機、板状物体の真空吸着
装置等に適用して有効な吸着装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suction device that is effective when applied to automatic sheet feeders, vacuum suction devices for plate-shaped objects, and the like.
印刷機等の自動枚葉給紙機に用いられる真空圧
を利用した板状物体Ｂの吸着装置Ａには従来種々
の形式があるが、その中で第２図に示す形式の吸
着装置Ａについて説明する。この吸着装置Ａに真
空が作用すると、矢印の如く吸口１からピストン
２の通気穴３および絞り４を通つて空気が流れ、
シリンダ５内は負圧となるが、絞り４の作用によ
りピストン下室６の圧力が、ピストン上室７の圧
力より低くなる。 Conventionally, there are various types of suction devices A for plate-shaped objects B that utilize vacuum pressure and are used in automatic sheet feeders such as printing machines. explain. When a vacuum is applied to this suction device A, air flows from the suction port 1 through the vent hole 3 of the piston 2 and the throttle 4 as shown by the arrow.
Although the inside of the cylinder 5 becomes negative pressure, the pressure in the lower piston chamber 6 becomes lower than the pressure in the upper piston chamber 7 due to the action of the throttle 4.
この差圧によりばね８に抗してピストン２は下
方に押し下げられ、下方にある紙９に接触する
と、吸口１からの空気は遮断され、ピストン上室
７、下室６の圧力が等しくなり、吸口１に紙９を
吸着したままピストン２がばね８により上昇す
る。吸着により吸口１に紙９を保持する力は、吸
着部分で紙９の上下面に作用する圧力差であり、
紙９が吸口１に押し付けられる力、およびそれに
よる摩擦力である。そのいずれもピストン上室７
の圧力が主たる要因である。 This differential pressure pushes the piston 2 downward against the spring 8, and when it comes into contact with the paper 9 below, the air from the suction port 1 is cut off, and the pressures in the piston upper chamber 7 and lower chamber 6 become equal. The piston 2 is raised by the spring 8 while holding the paper 9 to the suction port 1. The force that holds the paper 9 in the suction port 1 by suction is the pressure difference that acts on the upper and lower surfaces of the paper 9 at the suction part,
These are the force with which the paper 9 is pressed against the suction port 1 and the resulting frictional force. Both of them are piston upper chamber 7
pressure is the main factor.
以上の作動原理から明らかなように、絞り４が
小さいとピストン下室６に流れ込む空気の量は少
ない。このためピストン上、下室７，６の差圧は
大きくなり、ピストン２の下降速度は早くなる。
紙９が吸口１に接触した後差圧がなくなるが、そ
の時間的変化はゆるやかであり、紙９を確実に吸
着するまでの時間は長くなるのみならず、紙９を
持ち上げるためのピストン２の上昇速度も遅い。 As is clear from the above operating principle, when the throttle 4 is small, the amount of air flowing into the lower piston chamber 6 is small. Therefore, the differential pressure between the upper and lower chambers 7 and 6 of the piston increases, and the downward speed of the piston 2 increases.
After the paper 9 comes into contact with the suction port 1, the differential pressure disappears, but the change over time is gradual, and not only does it take a long time to securely suck the paper 9, but the piston 2 required to lift the paper 9 is The rate of rise is also slow.
逆に絞り４を大きくした場合は、ピストン下室
６に流れ込む空気量は大きく、ピストン上、下室
７，６の差圧は小さく、ピストン２の下降速度は
遅い。一方吸口１が紙９に接触した後、ピストン
上室７の圧力の時間的減少度合は急激となり、確
実な吸着に至るまでの時間は短くなり、ピストン
上昇速度も早くなる。このように吸着装置の性能
は絞り４によつて支配され、ピストン下降速度
と、吸着するに必要な時間とピストン上昇速度と
は矛盾する関係にある。 Conversely, when the throttle 4 is made large, the amount of air flowing into the piston lower chamber 6 is large, the differential pressure between the upper and lower piston chambers 7 and 6 is small, and the downward speed of the piston 2 is slow. On the other hand, after the suction port 1 contacts the paper 9, the pressure in the upper chamber 7 of the piston decreases rapidly over time, the time required for reliable suction becomes shorter, and the piston rises faster. As described above, the performance of the adsorption device is controlled by the throttle 4, and the piston descending speed, the time required for adsorption, and the piston ascending speed are in a contradictory relationship.
しかもこの装置の欠点は、高速で吸着させる場
合に顕著となる。即ち、高速で吸着させるために
は、紙９に接触するためのピストン２の下降時
間、確実に吸着するための時間、紙９を持ち上げ
るためのピストン２の上昇時間のいずれも短くな
らねばならないが、この装置ではこれらの点を満
足させることは理論的に不可能であつた。 Moreover, the drawbacks of this device become noticeable when adsorbing at high speed. That is, in order to attract the paper 9 at a high speed, the time required for the piston 2 to descend to contact the paper 9, the time required to securely attract the paper 9, and the time required for the rise of the piston 2 to lift the paper 9 must all be shortened. However, it was theoretically impossible to satisfy these points with this device.
本発明は前記従来の欠点を解消するために提案
されたもので、ピストン通気穴内吸口の近くに別
に空気の吸引口を設け、ピストン上室の圧力をピ
ストン下室の圧力に関係なく制御することによ
り、高速に適した吸着を可能にした吸着装置を提
供せんとするものである。 The present invention has been proposed in order to solve the above-mentioned conventional drawbacks, and includes providing a separate air suction port near the suction port in the piston vent hole to control the pressure in the upper chamber of the piston regardless of the pressure in the lower chamber of the piston. In this way, the present invention aims to provide an adsorption device capable of adsorption suitable for high speed.
以下本発明の実施例を図面について説明する
と、第３図〜第５図は本発明の実施例を示し、シ
リンダ１０内に、紙１１を吸着するための吸口１
２を持つたピストン１３が上下動可能に組込まれ
ている。ピストン１３は、同ピストン１３と紙１
１の重さに打勝つて押しあげられる程度の力のば
ね１４によつて支えられている。 Embodiments of the present invention will be described below with reference to the drawings. FIGS. 3 to 5 show embodiments of the present invention.
A piston 13 having a diameter of 2 is incorporated so as to be movable up and down. The piston 13 is the same piston 13 and the paper 1
It is supported by a spring 14 with enough force to overcome the weight of 1 and push it up.
またシリンダ１０の下方は蓋１５で覆われてい
て、シリンダ１０の上部に貫通して取付けられた
吸引管１６の先端の吸引口１７は吸口１２の所ま
で延びている。吸引管１６の外径D2とピストン
１３の通気室１８の内径D1との隙間の面積は、
吸口１２の内径d1の面積より小さくなつている。
また吸引口１７の内径d2の面積も従来の装置の絞
りの面積より数倍大きい。 Further, the lower part of the cylinder 10 is covered with a lid 15, and a suction port 17 at the tip of a suction pipe 16 that is attached to the upper part of the cylinder 10 extends to the suction port 12. The area of the gap between the outer diameter D 2 of the suction pipe 16 and the inner diameter D 1 of the ventilation chamber 18 of the piston 13 is
The area is smaller than the area of the inner diameter d1 of the suction port 12.
Furthermore, the area of the inner diameter d 2 of the suction port 17 is several times larger than the area of the aperture of the conventional device.
シリンダ１０の下部には空気穴１９が設けられ
ており、接手２０、ホース２１で接手２２に継が
れている。接手２２は三方接手であつて、残り２
方の内１方をホース２３で吸引管１６に継がれて
おり、他方はホース２４で、別に設置された真空
の作用、大気開放を切換えるバルブ（図示せず）
に継がれている。なお、第３図は大気開放の状
態、第４図は真空が作用し、ピストン下降中の状
態、第５図は真空作用、ピストン上昇終り（紙持
上げ完了）の状態を示す。また２５はピストン下
室、２６はピストン上室である。 An air hole 19 is provided in the lower part of the cylinder 10, and is connected to a joint 22 with a joint 20 and a hose 21. Joint 22 is a three-way joint, and the remaining 2
One of the two is connected to the suction pipe 16 by a hose 23, and the other is a hose 24, which is connected to a separately installed valve (not shown) for switching between vacuum operation and atmospheric release.
It has been passed down to Note that FIG. 3 shows a state in which the air is opened to the atmosphere, FIG. 4 shows a state in which a vacuum is applied and the piston is descending, and FIG. 5 shows a state in which a vacuum is applied and the piston has finished rising (paper lifting has been completed). Moreover, 25 is a piston lower chamber, and 26 is a piston upper chamber.
次に作用を説明すると、第３図でバルブの切換
により真空が作用すると、ピストン下室２５の圧
力は急激に減少する。一方吸引管１６にも真空が
作用するが、吸引管１６の外径D2と、ピストン
１３の内径D1との隙間の面積より吸口１２の内
径d1の面積が大きいこと、および吸引管１６の先
端吸引口１７が吸口１２の所まで延びているこ
と、さらに吸引口１７が吸口１２の方を向いてい
ることの効果により、吸引される空気の多くは吸
口１２からの大気であり、ピストン上室２６の圧
力の減少はゆるやかである。 Next, the operation will be explained. As shown in FIG. 3, when a vacuum is applied by switching the valve, the pressure in the piston lower chamber 25 decreases rapidly. On the other hand, vacuum also acts on the suction pipe 16, but the area of the inner diameter d1 of the suction port 12 is larger than the area of the gap between the outer diameter D2 of the suction pipe 16 and the inner diameter D1 of the piston 13, and the suction pipe 16 Due to the fact that the suction port 17 at the tip of the piston extends to the suction port 12 and that the suction port 17 faces the suction port 12, most of the air sucked in is atmospheric air from the suction port 12, and the piston The pressure in the upper chamber 26 decreases slowly.
このためピストン上室２６と下室２５の圧力差
は大となり、ピストン１３は速やかに下降する。
第４図の状態からピストン１３がさらに下降して
紙１１に吸口１２が第５図の如く接すると、吸口
１２からの大気の吸引が遮断される。ところが吸
引口１７の内径d2は比較的大きく形成されている
ため、同吸引口１７を経てホース２３方向に吸引
されるピストン上室２６からの吸引量は大きくな
り、ピストン上室２６の圧力は急激に減少する。
この時紙１１と吸口１２との接触による大気吸引
の遮断が不完全な状態であつても、吸引管１６に
よる吸引空気量が大であるため、ピストン１３の
内部吸口１２の上部の通気室１８の圧力の減少は
急激である。このため紙１１の確実な保持が短時
間に実現できる。 Therefore, the pressure difference between the piston upper chamber 26 and the lower chamber 25 becomes large, and the piston 13 quickly descends.
When the piston 13 further descends from the state shown in FIG. 4 and the suction port 12 comes into contact with the paper 11 as shown in FIG. 5, the suction of atmospheric air from the suction port 12 is cut off. However, since the inner diameter d2 of the suction port 17 is formed relatively large, the amount of suction from the piston upper chamber 26 sucked in the direction of the hose 23 through the suction port 17 becomes large, and the pressure in the piston upper chamber 26 increases. Decrease rapidly.
At this time, even if the air suction is not completely blocked by the contact between the paper 11 and the suction port 12, the amount of air sucked by the suction pipe 16 is large, so the ventilation chamber 18 above the internal suction port 12 of the piston 13 The decrease in pressure is rapid. Therefore, reliable holding of the paper 11 can be realized in a short time.
この現象を感覚的に表現すれば、従来の装置で
は吸口１２が紙１１に接触して吸着するように見
えるが、この装置では紙１１が吸口１２に吸い寄
せられて吸着されるように見える。 Expressing this phenomenon intuitively, in the conventional device it appears that the suction port 12 comes into contact with the paper 11 and attracts it, but in this device it appears that the paper 11 is attracted to the suction port 12 and is attracted.
紙１１が吸口１２に吸着されると、ピストン上
室２６の圧力は減少するが、この減少度合は従来
の装置に比し数倍大きく、ピストンの上昇は速や
かに行なわれる。また紙１１を吸口１２の拘束か
ら開放するには、バルブを切換えて、ピストン上
室２６、下室２５共に大気に開放すれば良い。 When the paper 11 is attracted to the suction port 12, the pressure in the upper chamber 26 of the piston decreases, but the degree of decrease is several times greater than in the conventional device, and the piston moves up quickly. Further, in order to release the paper 11 from the restriction of the suction port 12, it is sufficient to switch the valve and open both the piston upper chamber 26 and the lower chamber 25 to the atmosphere.
以上詳細に説明した如く本発明は構成されてい
るので、ピストン下室の圧力は、バルブからの真
空の作用のみによつて単独に決定され、ピストン
上室の状態には影響されない。またピストン上室
の圧力は、ピストンの内部通気室の内径D1、吸
引管の外径D2、吸引口内径d2、吸口の内径d1お
よび吸引口の位置と向きなど、ピストン上室の内
部にあるもののみによつて決定され、ピストン下
室の状態に影響されないし、影響もしない。また
紙の吸口への吸着も同様であるのみならず、確実
な吸着をより迅速に行なうことができる。 Since the present invention is configured as described in detail above, the pressure in the lower piston chamber is determined solely by the vacuum effect from the valve and is not affected by the state of the upper piston chamber. In addition, the pressure in the upper chamber of the piston depends on the inner diameter D 1 of the internal ventilation chamber of the piston, the outer diameter D 2 of the suction tube, the inner diameter d 2 of the suction port, the inner diameter d 1 of the suction port, and the position and orientation of the suction port. It is determined only by what is inside and is not influenced or affected by the condition of the lower chamber of the piston. Moreover, not only is the suction of the paper to the suction port the same, but also the suction can be carried out more reliably and quickly.
即ち、本発明は、吸引管の外径D2とピストン
の通気室の内径D1との間の隙間の面積は、前記
吸口の内径d1の面積より小さく形成されており、
かつ前記吸引口の内径d2は比較的大きく形成され
ているので、真空引きによりピストン下室の圧力
が急激に減少しても、ピストン上室の圧力の減少
はゆるやかであるため、ピストンは速やかに下降
する。次いで吸口がシート状物に接すると、吸引
口の内径は比較的大きいため、ピストン上室から
の吸引量は大きく、ピストン上室の圧力は急激に
減少し、従つてシート状物は吸口に短時間で確実
に保持される。またシート状物が吸口に吸着され
ると、ピストン上室の圧力は減少するが、この圧
力の減少度合は従来に比べて数倍大きいため、ピ
ストンの上昇は速やかに行われる。以上の如くピ
ストンの下降時間、確実な吸着保持の時間、ピス
トンの上昇時間の何れをも短縮することができ
る。 That is, in the present invention, the area of the gap between the outer diameter D 2 of the suction pipe and the inner diameter D 1 of the ventilation chamber of the piston is smaller than the area of the inner diameter d 1 of the suction port,
In addition, since the inner diameter d2 of the suction port is formed to be relatively large, even if the pressure in the lower chamber of the piston decreases rapidly due to evacuation, the pressure in the upper chamber of the piston decreases slowly, so the piston is quickly removed. descend to Next, when the suction port comes into contact with the sheet-like object, since the inner diameter of the suction port is relatively large, the amount of suction from the upper chamber of the piston is large, and the pressure in the upper chamber of the piston decreases rapidly. Reliably preserved in time. Furthermore, when the sheet-like material is attracted to the suction port, the pressure in the upper chamber of the piston decreases, but the degree of decrease in pressure is several times greater than in the conventional case, so that the piston rises quickly. As described above, it is possible to shorten all of the time for the piston to descend, the time for reliable suction and holding, and the time for the piston to rise.
このように本発明によると、従来の装置でピス
トン下室とピストン上室および通気穴を継ぐ絞り
による効果で実現していた作用の不具合を一挙に
解決することができる。 As described above, according to the present invention, it is possible to solve at once the problems that were achieved in the conventional device by the effect of the throttle that connects the lower piston chamber, the upper piston chamber, and the ventilation hole.
第１図は従来の吸着装置で積み上げられた紙を
１枚づつ取出す状態を示す説明図、第２図は第１
図の吸着装置の詳細断面図、第３図は本発明の実
施例を示す吸着装置の断面図、第４図及び第５図
は第３図と異なる作用状態を示す吸着装置の断面
図である。
図の主要部分の説明、１０……シリンダ、１１
……紙（シート状物）、１２……吸口、１３……
ピストン、１４……ばね、１５……蓋（蓋部材）、
１６……吸引管、１７……吸引口、１８……通気
室、１９……空気穴（通気穴）、２５……ピスト
ン下室、２６……ピストン上室。
Figure 1 is an explanatory diagram showing how a conventional suction device takes out stacked papers one by one.
FIG. 3 is a sectional view of an adsorption device showing an embodiment of the present invention, and FIGS. 4 and 5 are sectional views of the adsorption device showing operating states different from those in FIG. 3. . Explanation of main parts of the figure, 10...Cylinder, 11
... Paper (sheet-like material), 12 ... Mouthpiece, 13 ...
Piston, 14... Spring, 15... Lid (lid member),
16... Suction pipe, 17... Suction port, 18... Ventilation chamber, 19... Air hole (vent hole), 25... Piston lower chamber, 26... Piston upper chamber.
Claims (1)
し、下端に中央に穴を有する蓋部材１５を取付け
たシリンダ１０、同シリンダ１０内に設けられ、
前記通気穴１９に連通するピストン下室２５、前
記シリンダ１０の中央部に上下にわたり固定され
その中央穴の上部を前記通気穴１９に連通させ、
下部の吸引口１７は前記蓋部材１５の下端まで伸
びている吸引管１６、同吸引管１６の周囲を隙間
を介して取囲むよう上下動自在に設けられ、前記
蓋部材１５より下方に突出する吸口を有すると共
に、前記蓋部材の中央の穴の周囲と気密を保ちな
がら摺動可能なピストン１３、同ピストン１３を
前記吸口１２に吸着したシート状物１１の重さに
打勝つて押しあげる程度の力を有し、前記ピスト
ン下室２５内に設けられたばね１４、前記ピスト
ン１３により前記ピストン下室２５と隔離され、
前記吸引管１６周囲の隙間と連通するピストン上
室２６を備え、前記吸引管１６の外径D2とピス
トンの通気室の内径D1との間の前記隙間の面積
は、前記吸口の内径d1の面積より小さく形成され
ており、かつ前記吸引口１７の内径d2は比較的大
きく形成されていることを特徴とする吸着装置。1. A cylinder 10 having a ventilation hole 19 communicating with a vacuum source or an atmospheric source and having a lid member 15 having a hole in the center attached to the lower end, provided within the cylinder 10,
a lower piston chamber 25 communicating with the ventilation hole 19; fixed vertically to the center of the cylinder 10 with the upper part of the center hole communicating with the ventilation hole 19;
The lower suction port 17 is provided with a suction pipe 16 extending to the lower end of the lid member 15, is movable up and down so as to surround the suction pipe 16 with a gap, and projects downward from the lid member 15. A piston 13 having a suction port and capable of sliding around the center hole of the lid member while maintaining airtightness, and pushing the piston 13 up to overcome the weight of the sheet-like material 11 adsorbed to the suction port 12. is isolated from the piston lower chamber 25 by the spring 14 provided in the piston lower chamber 25 and the piston 13,
A piston upper chamber 26 is provided which communicates with a gap around the suction tube 16, and the area of the gap between the outer diameter D2 of the suction tube 16 and the inner diameter D1 of the ventilation chamber of the piston is equal to the inner diameter d of the suction port. 1 , and the inner diameter d2 of the suction port 17 is relatively large.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP555582A JPS58125539A (en) | 1982-01-18 | 1982-01-18 | Sucton device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP555582A JPS58125539A (en) | 1982-01-18 | 1982-01-18 | Sucton device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58125539A JPS58125539A (en) | 1983-07-26 |
| JPS6344650B2 true JPS6344650B2 (en) | 1988-09-06 |
Family
ID=11614438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP555582A Granted JPS58125539A (en) | 1982-01-18 | 1982-01-18 | Sucton device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58125539A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60128141A (en) * | 1983-12-12 | 1985-07-09 | Masayoshi Omachi | Automatic absorbing device |
| US6672448B2 (en) * | 2000-03-10 | 2004-01-06 | Aida Engineering Co., Ltd. | Transfer device |
| JP4673546B2 (en) * | 2002-10-25 | 2011-04-20 | ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト | Flip-up mouthpiece |
| JP2007253249A (en) * | 2006-03-20 | 2007-10-04 | Honda Motor Co Ltd | Adsorption device and adsorption method using the adsorption device |
| JP5004714B2 (en) * | 2007-08-09 | 2012-08-22 | 株式会社小森コーポレーション | Paper feeder for printing press |
| ITBS20110028A1 (en) * | 2011-03-14 | 2012-09-15 | Gimatic Spa | HANDLING DEVICE OPERATED BY THE VACUUM |
| JP6918598B2 (en) * | 2017-06-23 | 2021-08-11 | Thk株式会社 | Actuator and actuator unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS621161Y2 (en) * | 1981-01-28 | 1987-01-12 |
-
1982
- 1982-01-18 JP JP555582A patent/JPS58125539A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58125539A (en) | 1983-07-26 |
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