JP2008238312A

JP2008238312A - Article suction device

Info

Publication number: JP2008238312A
Application number: JP2007080694A
Authority: JP
Inventors: Yasuo Yamanaka; 中泰夫山
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-27
Filing date: 2007-03-27
Publication date: 2008-10-09
Anticipated expiration: 2027-03-27
Also published as: JP4673332B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device capable of quickly performing a suction preparation in an article suction device. <P>SOLUTION: The article suction device is equipped with a pressure reduction means 2 connected to a main body 1, an operation chamber 3 for performing a suction action of the air by being connected to the pressure reduction means 2, a first valve hole 4 opened to a portion connected to the pressure reduction 2 in the operation chamber 3 a second valve hole 5 opened to the opposite side of the first valve opening 4 in the operation chamber 3, a valve element 6 which is movably provided in the operating chamber 3 and selectively positioned at the first valve hole 4 and the second valve hole 5, an elastic member 7 which is provided in the operation chamber 3 and energizes the valve element 6 toward the second valve hole 5, a suction member 8 which is connected to the main body 1, and sucks the article by providing at the outside of the second valve hole 5, a first air leakage means 41 which is provided on the first valve hole 4 and where a part of the air circulates when the valve element 6 is abutted, and a second air leakage means 51 which is provided on the second valve hole 5 and where a part of air circulated when the valve element 6 is abutted. A spiral groove 9 is provided is provided on an inner wall 3a of the operation chamber 3 from the second valve hole 5 side toward the first valve hole 4 side. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、減圧手段の吸引力により物品を吸着する物品吸着装置において、減圧手段による吸着準備を迅速かつ確実に行うことができる物品吸着装置に関する。 The present invention relates to an article adsorbing apparatus that can quickly and reliably prepare for adsorbing by an evacuating means in an article adsorbing apparatus that adsorbs an article by the suction force of the depressurizing means.

従来、ガラス板、金属板、木製仕上げ板のような表面が平坦に仕上げられている部材を持ち上げ、移動し、運搬を迅速に行うことができる装置として、吸引作用を行う作動室の減圧手段側の第１弁孔および該作動室の物品を吸着する吸着部材側の第２弁孔のそれぞれに空気漏れ出し手段を設けた物品吸着装置が開示されている（特許文献１の図１参照）。 Conventionally, as a device that can lift, move, and quickly transport members with flat surfaces such as glass plates, metal plates, and wooden finish plates, the decompression means side of the working chamber that performs suction An article adsorbing device in which air leakage means is provided in each of the first valve hole and the second valve hole on the adsorbing member side that adsorbs the article in the working chamber is disclosed (see FIG. 1 of Patent Document 1).

この物品吸着装置にあっては、弁座に空気漏れ出し手段が設けられているため減圧手段の動作により第１弁孔に弁体が位置しているときであっても、空気漏れ出し手段による一部の空気の流通により物品の吸着を開始させることができるため、減圧手段を作動させて吸着準備が完了した後にあっては迅速に物品を吸着させることができる。
特開２００４−１１４２２０号公報 In this article adsorbing device, since the air leakage means is provided in the valve seat, even when the valve element is positioned in the first valve hole by the operation of the pressure reducing means, the air leakage means Since the adsorption of the article can be started by the circulation of a part of the air, the article can be adsorbed quickly after the decompression means is operated and the preparation for adsorption is completed.
JP 2004-114220 A

しかしながら、前述の物品吸着装置にあっては、減圧手段による吸着準備時において、第２弁孔に当接している弁体を減圧手段による空気の吸引により第１弁孔側に引き寄せなければならないため、一つの減圧手段に複数の物品吸着装置を連結した場合や減圧手段の吸引能力が小さい場合には、弁体を第１弁孔に引き寄せるまでに長時間を要して物品吸着装置の吸着準備を迅速に行うことができなかったり、弁体を第１弁孔に引き寄せることができず、物品の吸着準備状態にならなかったりという問題点があった。 However, in the article adsorbing device described above, the valve body that is in contact with the second valve hole must be pulled toward the first valve hole side by suction of air by the pressure reducing means when preparing for suction by the pressure reducing means. When a plurality of article adsorbing devices are connected to one decompression means or when the suction capacity of the decompression means is small, it takes a long time to draw the valve body toward the first valve hole, and preparation for adsorbing the article adsorbing device is performed. Cannot be performed quickly, or the valve body cannot be drawn to the first valve hole, and the article is not ready for adsorption.

本発明は、上述した問題点を解決するためになされたものである。 The present invention has been made to solve the above-described problems.

請求項１に係る発明は、本体と、この本体に接続され空気の吸引を行う減圧手段と、前記本体に設けられ前記減圧手段に接続させて空気の吸引作用を行う作動室と、この作動室内の前記減圧手段に接続される部位に開口した第1弁孔と、前記作動室内の前記第1弁孔と反対側に開口した第２弁孔と、前記作動室内に移動自在に設けられ前記第１弁孔と前記第２弁孔とに選択的に位置する弁体と、前記作動室内に設けられ前記弁体を前記第２弁孔に向かって付勢する弾性部材と、前記本体に接続され前記第２弁孔の外側に設けて物品を吸着する吸着部材と、
前記第１弁孔に設けられ前記弁体が当接したときに一部の空気が流通する第１空気漏れ出し手段と、前記第２弁孔に設けられ前記弁体が当接したときに一部の空気が流通する第２空気漏れ出し手段とを備え、前記作動室の内壁には前記第２弁孔側から前記第１弁孔側に向かって螺旋状の溝が設けられている物品吸着装置である。 According to the first aspect of the present invention, there is provided a main body, a pressure reducing means connected to the main body for sucking air, a working chamber provided in the main body and connected to the pressure reducing means for sucking air, and the working chamber. A first valve hole opened at a portion connected to the decompression means, a second valve hole opened on the opposite side to the first valve hole in the working chamber, and movably provided in the working chamber. A valve body selectively positioned in one valve hole and the second valve hole; an elastic member provided in the working chamber for biasing the valve body toward the second valve hole; and connected to the main body. An adsorbing member that is provided outside the second valve hole and adsorbs an article;
A first air leaking means through which a part of air flows when the valve body is provided in the first valve hole; and a first air leaking means provided in the second valve hole when the valve body is contacted. A second air leaking means through which the air of the part circulates, and an inner wall of the working chamber is provided with a spiral groove from the second valve hole side toward the first valve hole side Device.

請求項２に係る発明は、請求項１記載の物品吸着装置において、既存の吸着部材に接続させた接続部材の途中を切断し、本体の第２弁孔側に、前記吸着部材に接続させた一方の接続部材を連結し、前記本体の第１弁孔側に、前記切断させた他方の接続部材を連結させたものである。 The invention according to claim 2 is the article adsorbing device according to claim 1, wherein the connecting member connected to the existing adsorbing member is cut halfway and connected to the adsorbing member on the second valve hole side of the main body. One connecting member is connected, and the cut other connecting member is connected to the first valve hole side of the main body.

請求項３に係る発明は、請求項１記載の物品吸着装置において、本体に、減圧手段による物品の吸着有無を検出する検出手段を設けたものである。 According to a third aspect of the present invention, in the article adsorption apparatus according to the first aspect, the main body is provided with detection means for detecting whether or not the article is adsorbed by the decompression means.

請求項４に係る発明は、請求項１記載の物品吸着装置において、本体は、透明な部材で形成されており、前記本体を通して外部から弁体が目視可能であるものである。 According to a fourth aspect of the present invention, in the article adsorbing device according to the first aspect, the main body is formed of a transparent member, and the valve body is visible from the outside through the main body.

請求項１に記載の物品吸着装置によれば、作動室の内壁には第２弁孔側から第１弁孔側に向かって螺旋状の溝が設けられているため、この螺旋状の溝に沿って吸引される空気に渦流を発生させることができ、減圧手段の作動開始時にあっては、作動室内の弁体の第1弁孔側の空間において、減圧手段による空気の吸引により生じた負圧と、螺旋状の溝により発生した空気の渦流による負圧（空気の流れが速まることにより生ずる静圧の降下）とが相俟って、第２弁孔に位置している弁体を第１弁孔側に迅速かつ確実に引き寄せて移動させることができ、物品吸着装置の吸着準備を迅速かつ確実に行うことができる。 According to the article adsorbing device of the first aspect, since the spiral groove is provided on the inner wall of the working chamber from the second valve hole side to the first valve hole side, A vortex can be generated in the air sucked along, and at the start of the operation of the pressure reducing means, in the space on the first valve hole side of the valve body in the working chamber, the negative generated by the suction of air by the pressure reducing means The pressure body and the negative pressure due to the air vortex generated by the spiral groove (a decrease in static pressure caused by the increased air flow) combine the valve body located in the second valve hole with the first It can be quickly and surely pulled and moved to the one valve hole side, and the preparation for adsorbing the article adsorbing device can be performed quickly and reliably.

請求項２に記載の物品吸着装置によれば、既存の吸着部材に接続させた接続部材の途中を切断し、本体の第２弁孔側に、吸着部材に接続させた一方の接続部材を連結し、本体の第１弁孔側に、切断させた他方の接続部材を連結させたため、既存の吸着ユニットを簡便に物品吸着装置として利用することができる。 According to the article adsorbing device according to claim 2, the connection member connected to the existing adsorbing member is cut halfway, and one connecting member connected to the adsorbing member is connected to the second valve hole side of the main body. And since the other connection member cut | disconnected was connected with the 1st valve-hole side of a main body, the existing adsorption | suction unit can be simply utilized as an article | item adsorption | suction apparatus.

請求項３に記載の物品吸着装置によれば、本体に、減圧手段による物品の吸着有無を検出する検出手段を設けたため、この検出された物品の吸着有無の情報を利用することができる。 According to the article adsorbing device of the third aspect, since the main body is provided with the detecting means for detecting whether or not the article is adsorbed by the decompression means, the detected information on whether or not the article is adsorbed can be used.

請求項４に記載の物品吸着装置によれば、本体は、透明な部材で形成されているため、外部から弁体を目視することができ、弁体が第1弁孔または第２弁孔に位置しているかを視認することにより、該物品吸着装置の物品の吸引動作の有無を簡易に確認することができる。 According to the article adsorbing device of the fourth aspect, since the main body is formed of a transparent member, the valve body can be visually observed from the outside, and the valve body is formed in the first valve hole or the second valve hole. By visually recognizing whether the article is positioned, it is possible to easily check whether or not the article suction device is performing the suction operation of the article.

本発明の一実施例を、図１〜４に基づき説明する。図１においてＡは物品吸着装置であり、物品吸着装置Ａは、概略的に、本体１と、減圧手段２と、作動室３と、第1弁孔４と、第２弁孔５と、弁体６と、弾性部材７と、吸着部材８と、第１空気漏れ出し手段４１と、第２空気漏れ出し手段５１と、螺旋状の溝９とにより構成されている。 An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, A is an article adsorbing apparatus, and the article adsorbing apparatus A is roughly composed of a main body 1, a pressure reducing means 2, a working chamber 3, a first valve hole 4, a second valve hole 5, and a valve. The body 6, the elastic member 7, the adsorption member 8, the first air leakage means 41, the second air leakage means 51, and the spiral groove 9 are configured.

この物品吸着装置Ａは、例えば、図３に示すように、テーブルやコンベア等の載置台１０上に載置された物品ｂを吸着保持するものであり、吸着ユニットＷに一個または複数個が取り付けられる。 For example, as shown in FIG. 3, the article adsorbing apparatus A adsorbs and holds an article b placed on a placing table 10 such as a table or a conveyor, and one or a plurality of pieces are attached to the adsorbing unit W. It is done.

本体１は、例えば、吸着ユニットＷのフレーム１１に取り付けられ、前後左右および上下方向に移動自在となるように支承されるものであり、図１に示したように、一端には減圧手段２が、他端には吸着部材８が接続されている。なお、この本体１は、該本体１を通して外部から弁体６（後述）が目視可能となるように、透明な部材で形成することもできる。透明な部材としては、例えば、アクリルなどの透明な合成樹脂やガラスなどの材料が用いられる。 The main body 1 is attached to the frame 11 of the suction unit W, for example, and is supported so as to be movable in the front-rear, left-right, and up-down directions. As shown in FIG. The suction member 8 is connected to the other end. The main body 1 can also be formed of a transparent member so that the valve body 6 (described later) can be seen from the outside through the main body 1. As the transparent member, for example, a transparent synthetic resin such as acrylic or a material such as glass is used.

減圧手段２は、本体１に接続され空気の吸引を行うものであり、例えば、油回転ポンプなどの空気を吸引する吸引部材１４と、この吸引部材１４と本体１とを接続する配管１２と、配管１２の中途に設けられたバルブ１３（図３参照）とで構成されている。 The decompression means 2 is connected to the main body 1 and sucks air. For example, a suction member 14 for sucking air, such as an oil rotary pump, and a pipe 12 for connecting the suction member 14 and the main body 1, It is comprised with the valve | bulb 13 (refer FIG. 3) provided in the middle of the piping 12. As shown in FIG.

作動室３は、本体１に設けられ減圧手段２に接続させて空気の吸引作用を行うものであり、内部に弁体６および弾性部材７が配置されている。 The working chamber 3 is provided in the main body 1 and is connected to the decompression means 2 to perform an air suction action, and a valve body 6 and an elastic member 7 are disposed therein.

第1弁孔４は、作動室３内の減圧手段２に接続されている部位に開口する弁孔であり、この第１弁孔４の周縁部には弁体６が当接する弁座４ａが設けられている。 The first valve hole 4 is a valve hole that opens to a portion connected to the decompression means 2 in the working chamber 3, and a valve seat 4 a with which the valve body 6 abuts on the peripheral portion of the first valve hole 4. Is provided.

第２弁孔５は、作動室３内の第1弁孔４と反対側に開口した弁孔であり、この第２弁孔５の周縁部には弁体６が当接する弁座５ａが設けられている。 The second valve hole 5 is a valve hole opened on the opposite side to the first valve hole 4 in the working chamber 3, and a valve seat 5 a with which the valve body 6 abuts is provided at the peripheral portion of the second valve hole 5. It has been.

弁体６は、図１に示したように、作動室３内に移動自在に設けられ第１弁孔４と第２弁孔５とに選択的に位置して減圧手段２により吸引した空気の流れを調整するものであり、一般的には球状に形成されているが、板状、円柱状、角柱状などの形状に形成してもよい。また、弁体６は充実体または中空体のどちらでもよいが、移動の容易さを考慮すると好ましくは中空体が用いられる。弁体６の材質は、摩耗を低減できる点では鋼、ステンレスなどの金属材料やガラス等を用いることもできるが、移動の容易さ（軽さ）の点ではナイロン、ジュラゴン、アクリルなどの合成樹脂材料を用いることもでき、用途により適宜選択することができる。 As shown in FIG. 1, the valve body 6 is movably provided in the working chamber 3, and is selectively positioned in the first valve hole 4 and the second valve hole 5, so that the air sucked by the pressure reducing means 2 The flow is adjusted and is generally formed in a spherical shape, but may be formed in a plate shape, a cylindrical shape, a prismatic shape, or the like. Further, the valve body 6 may be either a solid body or a hollow body, but a hollow body is preferably used in consideration of ease of movement. The material of the valve body 6 can be a metal material such as steel or stainless steel or glass in terms of reducing wear, but in terms of ease of movement (lightness), synthetic resin such as nylon, duragon, acrylic, etc. A material can also be used and can be appropriately selected depending on the application.

弾性部材７は、作動室３内に設けられ弁体６を第２弁孔５に向かって付勢するものであり、例えばコイルスプリングなどの弾性体が用いられ、減圧手段２の作動開始時（図４（ａ）参照）あるいは物品ｂの吸着時（図４（ｄ）参照）には弾性部材７により弁体６を第２弁孔５側に付勢させている。この弾性部材７は、減圧手段２による空気の吸引力より弱い付勢力、すなわち、前述の吸引力より弱いばね力に調整されており、弁体６は、減圧手段２による空気の吸引力が作動室３に働くことにより吸引され、弾性部材７の付勢力に抗して第１弁孔４側に引き寄せられて弁座４ａに当接する。 The elastic member 7 is provided in the working chamber 3 and urges the valve body 6 toward the second valve hole 5. For example, an elastic body such as a coil spring is used at the start of operation of the decompression means 2 ( When the article b is adsorbed (see FIG. 4A) (see FIG. 4D), the elastic member 7 biases the valve body 6 toward the second valve hole 5 side. The elastic member 7 is adjusted to have a biasing force that is weaker than the air suction force by the decompression means 2, that is, a spring force that is weaker than the aforementioned suction force. The air is sucked by acting on the chamber 3 and is drawn toward the first valve hole 4 against the biasing force of the elastic member 7 and comes into contact with the valve seat 4a.

吸着部材８は、本体１に接続され第２弁孔５の外側に設けて物品ｂを吸着するものであって、第２弁孔５の下側において該第２弁孔５を囲むようにカップ状に設けて物品ｂの吸引室１５を形成し、吸着部材８に物品ｂが当接したときに第２弁孔５への外気の流入を防止するものである。この吸着部材８は、物品ｂへの密着性が良好となるようにゴムやスポンジ、発泡ウレタン等の可撓性あるいは弾力性を有する素材により形成され、該物品ｂの表面に多少の凹凸があっても吸着力を発揮できるように形成されるが、例えばガラス板などのように表面が滑らかで平らな物品を吸着したりする場合には、弾力性の小さい硬質の材料を用い、物品ｂとの接触面を予め研磨して平滑に形成してから用いることもできる。また、この吸着部材８は異なるサイズや形状などのものと交換できるように着脱自在に設けてもよい。 The adsorbing member 8 is connected to the main body 1 and provided outside the second valve hole 5 to adsorb the article b. The adsorbing member 8 is a cup so as to surround the second valve hole 5 below the second valve hole 5. The suction chamber 15 for the article b is formed to prevent the inflow of outside air into the second valve hole 5 when the article b comes into contact with the adsorption member 8. The adsorbing member 8 is formed of a material having flexibility or elasticity such as rubber, sponge, or urethane foam so that the adhesion to the article b is good, and the surface of the article b has some unevenness. However, in the case of adsorbing an article having a smooth surface such as a glass plate, a hard material with low elasticity is used. These contact surfaces can be used after having been polished and formed smoothly. Further, the adsorbing member 8 may be detachably provided so that it can be exchanged for a different size or shape.

第１空気漏れ出し手段４１は、第１弁孔４に設けられ弁体６が当接したときに一部の空気を流通させるものであり、第２空気漏れ出し手段５１は、第２弁孔５に設けられ弁体６が当接したときに一部の空気を流通させるものであって、第１空気漏れ出し手段４１および第２空気漏れ出し手段５１の空気の流通量は、両者共に減圧手段２による空気の吸引量よりも少なくなるように設けられている。ここで、一部の空気とは、減圧手段２による空気の吸引力を低下させる等の悪影響を与えない程度のわずかな量の空気をいう。 The first air leaking means 41 is provided in the first valve hole 4 to allow a part of air to flow when the valve body 6 comes into contact therewith. The second air leaking means 51 is a second valve hole. A part of the air is circulated when the valve body 6 comes into contact with the valve body 6, and the air circulation amount of the first air leakage means 41 and the second air leakage means 51 is reduced in pressure. It is provided so as to be smaller than the amount of air sucked by the means 2. Here, the partial air means a slight amount of air that does not adversely affect the suction force of the air by the decompression means 2 or the like.

この第１空気漏れ出し手段４１および第２空気漏れ出し手段５１は、例えば、図２（ａ）、（ｂ）に示したように、弁座４ａ、５ａの一箇所または複数箇所に溝を設けて弁体６が当接しても一部の空気が流通し得るようにしたり、図２（ｃ）に示したように、中空の弁体６に細孔６ａを穿設して一部の空気を流通させるようにしたりしてもよく、いずれの場合であっても、減圧手段２と作動室３とが、あるいは、作動室３と吸引室１５とが、この第１空気漏れ出し手段４１および第２空気漏れ出し手段５１を介して一部の空気を流通させるように形成されていればよい。なお、上述した第２空気漏れ出し手段５１の空気の流通量は、いかなる吸着条件下でも吸着保持に支障がない空気の流通量を確保するため、第１空気漏れ出し手段４１の空気の流通量よりも大きくなるように形成されている。なお、図２（ａ）、（ｃ）においては、第１弁孔４と第２弁孔５の要部をそれぞれ左右に分けて概略的に表している。 The first air leakage means 41 and the second air leakage means 51 are provided with grooves at one or a plurality of positions of the valve seats 4a and 5a as shown in FIGS. 2 (a) and 2 (b), for example. Thus, even if the valve body 6 comes into contact, a part of the air can flow, or, as shown in FIG. In any case, the decompression means 2 and the working chamber 3 or the working chamber 3 and the suction chamber 15 are connected to the first air leakage means 41 and What is necessary is just to be formed so that some air may distribute | circulate through the 2nd air leaking means 51. FIG. Note that the air flow rate of the second air leaking means 51 described above is the air flow rate of the first air leaking means 41 in order to secure the air flow rate that does not hinder the adsorption holding under any adsorption conditions. It is formed so as to be larger. In FIGS. 2A and 2C, the main parts of the first valve hole 4 and the second valve hole 5 are schematically shown separately on the left and right.

また、作動室３の内壁３ａには、図１に示したように、第２弁孔５側から第１弁孔４側に向かって螺旋状の溝９が設けられており、減圧手段２により吸引した空気がこの螺旋状の溝９に沿って流れることで作動室３内に渦流を発生させることができる。この螺旋状の溝９は、作動室３内において、吸引した空気が第１弁孔４と第２弁孔５とを通る中心軸の回りを回転しながら渦流となって第１弁孔４に向かって吸引できるものであればよく、例えば、作動室３の内壁３ａに断面がコの字状になるように穿設したり（図１参照）、図示していないが、Ｖ字状や半円状に形成したりしてもよい。また、螺旋状の溝９の本数は１条に限られず、複数条であってもかまわない（図１では２条を例示）。 Further, as shown in FIG. 1, a spiral groove 9 is provided on the inner wall 3 a of the working chamber 3 from the second valve hole 5 side toward the first valve hole 4 side. As the sucked air flows along the spiral groove 9, a vortex can be generated in the working chamber 3. The spiral groove 9 becomes a vortex in the working chamber 3 while the sucked air rotates around the central axis passing through the first valve hole 4 and the second valve hole 5 to form the first valve hole 4. For example, the inner wall 3a of the working chamber 3 may be perforated so as to have a U-shaped cross section (see FIG. 1). It may be formed in a circular shape. Further, the number of the spiral grooves 9 is not limited to one, and may be a plurality of (two are illustrated in FIG. 1).

図１において２０は、本体１の適所に設けた検出手段であり、減圧手段２による物品ｂの吸着有無を検出するもので、例えば、作動室３において第１弁孔４付近に配設して、該第１弁孔４側に弁体６が所定の時間位置していることをこの検出手段２０が検知したときに、物品ｂは吸着されていないものと判断して、図示してない制御手段等に信号を送信するようにしてもよい。 In FIG. 1, reference numeral 20 denotes detection means provided at an appropriate position of the main body 1, which detects whether or not the article b is adsorbed by the decompression means 2. When the detection means 20 detects that the valve element 6 is positioned on the first valve hole 4 side for a predetermined time, it is determined that the article b is not adsorbed, and is not illustrated. You may make it transmit a signal to a means.

また、本体１における第２弁孔５には、作動室３内へのゴミ等の異物の侵入を防止する除去部材２１が取り付けられている。この除去部材２１には、図１に示したような多数の空気の通孔２２が設けられた網体など、あるいは、図示してないが、スポンジなどの合成樹脂等による多孔質体などが用いられ、作動室３内への異物の混入を防止して、この異物の詰まりに起因する弁体６の動作不良を防止することができる。 A removal member 21 is attached to the second valve hole 5 in the main body 1 to prevent foreign substances such as dust from entering the working chamber 3. The removal member 21 is a net body provided with a large number of air holes 22 as shown in FIG. 1 or a porous body made of a synthetic resin such as a sponge (not shown). Thus, foreign matter can be prevented from entering the working chamber 3, and malfunction of the valve element 6 due to the clogging of the foreign matter can be prevented.

次に、上述したように構成される本発明の物品吸着装置Ａの作用について、図３に示したように、載置台１０に載置された物品ｂに、上方から吸着部材８を当接させて吸着する場合を例にとって説明する。 Next, regarding the operation of the article adsorbing device A of the present invention configured as described above, the adsorbing member 8 is brought into contact with the article b placed on the placing table 10 from above as shown in FIG. The case of adsorbing will be described as an example.

まず、減圧手段２を作動させない作動開始前の状態においては、図１および図４（ａ）に示したように、弁体６は、該弁体６の自重およびコイルスプリング等の弾性部材７により下方に押し下げられて第２弁孔５の弁座５ａに当接している。 First, in the state before the start of operation in which the decompression means 2 is not operated, as shown in FIGS. 1 and 4A, the valve body 6 is caused by its own weight and an elastic member 7 such as a coil spring. The second valve hole 5 is pressed downward and is in contact with the valve seat 5a.

そして、物品ｂが吸着部材８に当接していない状態において減圧手段２を作動させると、まず、図４（ａ）に示したように、作動室３内の空気が吸引され、この吸引により作動室３内にあっては減圧手段２側である第１弁孔４側の方が第２弁孔５側に比べて圧力がより低くなり、弁体６の下側よりも弁体６の上側の方が低い圧力（負圧）になるため、減圧手段２による空気の吸引力が弾性部材７の付勢力よりも大きくなると弁体６は弾性部材７の付勢力に抗して上昇する。そして、図４（ｂ）に示したように、弁体６が弁座５ａから離間すると多量の空気が第２弁孔５を介して作動室３内に流入し、引き続き減圧手段２による吸引が行われる。 When the pressure reducing means 2 is operated in a state where the article b is not in contact with the adsorption member 8, first, as shown in FIG. 4 (a), the air in the working chamber 3 is sucked and activated by this suction. In the chamber 3, the pressure on the first valve hole 4 side, which is the pressure reducing means 2 side, is lower than that on the second valve hole 5 side. Since the pressure is lower (negative pressure), the valve body 6 rises against the urging force of the elastic member 7 when the suction force of air by the decompression means 2 becomes larger than the urging force of the elastic member 7. Then, as shown in FIG. 4B, when the valve element 6 is separated from the valve seat 5a, a large amount of air flows into the working chamber 3 through the second valve hole 5, and the suction by the decompression means 2 continues. Done.

このとき、作動室３の内壁３ａには、図１に示したように、第２弁孔５側から第１弁孔４側に向かって螺旋状の溝９が設けられているため、第２弁孔５を介して吸着部材８側から作動室３内に流入した空気が該作動室３を通過する際に、作動室３の内壁３ａに設けられた螺旋状の溝９に沿って流れようとし、第１弁孔４に向かって流れる空気は次第に回転して渦流となり、上昇するにつれて該渦流の回転が速められて作動室３の上部にあっては空気の流れは高速になる。 At this time, the inner wall 3a of the working chamber 3 is provided with a spiral groove 9 from the second valve hole 5 side toward the first valve hole 4 side as shown in FIG. When the air flowing into the working chamber 3 from the adsorbing member 8 side through the valve hole 5 passes through the working chamber 3, it will flow along the spiral groove 9 provided in the inner wall 3a of the working chamber 3. Then, the air flowing toward the first valve hole 4 gradually rotates to become a vortex, and as it rises, the rotation of the vortex is accelerated, and the flow of air becomes high in the upper portion of the working chamber 3.

したがって、空気の流れが速まることにより生ずる静圧の降下現象は、空気の流れがより速い作動室３内の上部ほど顕著になり、弁体６の上側は、該弁体６の下側に比べてより低い圧力（負圧）になるため、上述した減圧手段による空気の吸引による負圧と、この渦流により生じた負圧とが相俟って、弁体６を第１弁孔４側に迅速かつ確実に引き寄せて移動させることができる。つまり、一つの減圧手段２に複数の物品吸着装置Ａを連結した場合や減圧手段２の吸引能力が小さい場合など空気の吸引力が弱いときであっても、弁体６を第１弁孔４に迅速かつ確実に引き寄せて、物品吸着装置Ａの吸着準備を迅速かつ確実に行うことができる。 Accordingly, the static pressure drop phenomenon caused by the faster air flow becomes more pronounced in the upper part of the working chamber 3 where the air flow is faster, and the upper side of the valve body 6 is higher than the lower side of the valve body 6. Therefore, the negative pressure generated by the suction of the air by the pressure reducing means and the negative pressure generated by this vortex flow combine to bring the valve body 6 toward the first valve hole 4 side. It can be pulled and moved quickly and reliably. That is, even when a plurality of article adsorbing devices A are connected to one decompression means 2 or when the suction capability of the decompression means 2 is small, the valve element 6 is connected to the first valve hole 4 even when the air suction force is weak. Thus, it is possible to quickly and reliably draw the article adsorbing device A quickly and surely.

そして、図４（ｃ）に示したように、弁体６が第１弁孔４側に引き寄せられて弁座４ａに当接すると物品吸着装置の吸着準備が完了する。なお、この吸着準備状態にあっては、弁体６が弁座４ａに当接して吸着部材８からの空気の吸引を阻止しようとするが、第１弁孔４には第１空気漏れ出し手段４１が設けられているため、弁体６が弁座４ａに当接している状態であっても一部の空気、すなわち、減圧手段２による空気の吸引力を低下させる等の悪影響を与えない程度のわずかな量の空気が、この第１弁孔４から吸引されている。 And as shown in FIG.4 (c), when the valve body 6 is drawn near to the 1st valve hole 4 side and contact | abuts to the valve seat 4a, the preparation for adsorption | suction of an article | item adsorption | suction apparatus will be completed. In this suction preparation state, the valve body 6 comes into contact with the valve seat 4a and tries to prevent the suction of air from the suction member 8, but the first valve hole 4 has a first air leakage means. 41 is provided, even if the valve body 6 is in contact with the valve seat 4a, a degree of adverse effect such as reducing the suction force of a part of the air, that is, the air by the decompression means 2 is not exerted. A small amount of air is sucked from the first valve hole 4.

したがって、吸着準備が完了したこの物品吸着装置Ａの吸着部材８を、図４（ｄ）に示したように、物品ｂの表面に当接させると、吸着部材８の開口部が塞がれ、第１空気漏れ出し手段４１を介した空気の吸引により作動室３および吸引室１５の圧力が低下する。 Therefore, when the suction member 8 of the article suction device A, which has been prepared for suction, is brought into contact with the surface of the article b as shown in FIG. 4D, the opening of the suction member 8 is blocked. The pressure in the working chamber 3 and the suction chamber 15 decreases due to the suction of air through the first air leakage means 41.

そして、弁体６の上側の圧力と作動室３および吸引室１５の圧力とが近似してくると弾性部材７の付勢力により弁体６が弁座４ａから離間して一気に空気が吸引され、作動室３および吸引室１５の圧力が急激に低下し、物品ｂが吸着部材８により吸着保持されるため、吸着ユニットＷにより該物品ｂを持ち上げたり移動させたりすることが可能となる。このとき、弁体６は弾性部材７の付勢力により第２弁孔５の位置まで押し戻されるが、弁体６が弁座５ａに当接している状態であっても第２空気漏れ出し手段５１により空気の流通が確保されているため、吸引室１５内の空気の吸引が引き続き行われており、物品ｂの吸着を保持することができる。 Then, when the pressure on the upper side of the valve body 6 and the pressure of the working chamber 3 and the suction chamber 15 are approximated, the urging force of the elastic member 7 causes the valve body 6 to be separated from the valve seat 4a, and air is sucked at once. Since the pressure in the working chamber 3 and the suction chamber 15 rapidly decreases and the article b is sucked and held by the sucking member 8, the sucking unit W can lift or move the article b. At this time, the valve body 6 is pushed back to the position of the second valve hole 5 by the urging force of the elastic member 7, but even if the valve body 6 is in contact with the valve seat 5a, the second air leakage means 51 is used. Therefore, the air in the suction chamber 15 is continuously sucked and the adsorption of the article b can be maintained.

そして、吸着保持した物品ｂを他の処理機等へ移送した後に吸着を解除する場合にあっては、物品ｂを載置台１０（図３参照）等に載置させ、減圧手段２の減圧動作を解除させるべく、減圧手段２を停止させたり、バルブ１３を切り替えたりして作動室３内に空気を送気して大気圧に戻すことにより吸着を解除し、物品ｂを吸着部材８から分離することができる。 In the case where the suction is released after the sucked and held article b is transferred to another processing machine or the like, the article b is placed on the placing table 10 (see FIG. 3) and the decompression operation of the decompression means 2 is performed. In order to cancel the suction, the decompression means 2 is stopped or the valve 13 is switched to feed air into the working chamber 3 to return to the atmospheric pressure, thereby releasing the suction and separating the article b from the suction member 8. can do.

ところで、上述した実施例の物品吸着装置Ａは、図３に示したように、複数のものを吸着ユニットＷに取り付けて用いてもよく、全ての物品吸着装置Ａが物品ｂの表面に当接していない状態であっても、物品ｂが吸着していない物品吸着装置Ａにあっては、弁体６が弁座４ａに当接しているため、第１空気漏れ出し手段４１を介した一部の空気の漏れ出し以外には空気の吸引はほとんどなく、減圧手段２の真空度の低下による吸引力の低下等の悪影響を与えるのを防止することができる。 By the way, as shown in FIG. 3, the article adsorbing device A according to the above-described embodiment may be used by attaching a plurality of items to the adsorbing unit W. In the article adsorbing device A in which the article b is not adsorbed even if it is not, the valve body 6 is in contact with the valve seat 4a, so a part through the first air leakage means 41 Except for the leakage of air, there is almost no air suction, and it is possible to prevent adverse effects such as a decrease in suction force due to a decrease in the degree of vacuum of the decompression means 2.

なお、減圧手段２の作動開始前に物品ｂを吸着部材８に当接させた後、減圧手段２の作動を開始させて物品ｂの吸着を行ってもよい。しかしながら、減圧手段２を構成する吸引部材１４や配管１２内の圧力を十分に低下させるのに時間を要するため、物品吸着装置Ａの使用前に予め減圧手段２を作動させて吸着準備を完了させておくのが好ましい。更に、物品の吸着時には弁体６が弾性部材７により第２弁孔５側に付勢されているため、物品ｂを吸着する方向が横向きや上向き等の任意角度であっても第１弁孔４側に戻ることがなく、物品吸着装置Ａを使用することができ、同様の作用効果を発揮することができる。 Note that the article b may be adsorbed by starting the operation of the decompression unit 2 after the article b is brought into contact with the adsorption member 8 before the operation of the decompression unit 2 is started. However, since it takes time to sufficiently reduce the pressure in the suction member 14 and the pipe 12 constituting the pressure reducing means 2, the pressure reducing means 2 is operated in advance before the use of the article adsorbing device A to complete the suction preparation. It is preferable to keep it. Furthermore, since the valve body 6 is urged toward the second valve hole 5 by the elastic member 7 at the time of adsorbing the article, the first valve hole even if the direction of adsorbing the article b is an arbitrary angle such as sideways or upward The article adsorbing device A can be used without returning to the fourth side, and the same effects can be exhibited.

次に、本発明の他の実施例について図５に基づき説明する。Ａは本発明の他の実施例に係る物品吸着装置であり、物品吸着装置Ａは、既存の吸着部材８ａに接続させたホースなどの接続部材３０の途中を切断し、本体１の第２弁孔５側に、吸着部材８ａに接続させた一方の接続部材３０ａを連結し、本体１の第１弁孔４側に、切断させた他方の接続部材３０ｂを連結させ、既存の吸着ユニットを利用できるようにしたものである。 Next, another embodiment of the present invention will be described with reference to FIG. A is an article adsorbing apparatus according to another embodiment of the present invention. The article adsorbing apparatus A cuts the middle of a connecting member 30 such as a hose connected to an existing adsorbing member 8a, and the second valve of the main body 1 One connecting member 30a connected to the suction member 8a is connected to the hole 5 side, and the other disconnected connection member 30b is connected to the first valve hole 4 side of the main body 1, and an existing suction unit is used. It is something that can be done.

すなわち、既存の吸着部材８ａのエアホースなどの接続部材３０の適所３０ｃを切断し、例えば、吸着部材８ａが接続されている接続部材３０ａの端部にねじ等の止着部材３１を取り付け、この止着部材３１を本体１の取付部１ａに取り付けると共に、切断された他方の接続部材３０ｂの端部に止着部材３２を取り付け、この止着部材３２を本体１の取付部１ｂに取り付けることで、既存の吸着ユニットを簡便に物品吸着装置Ａとして利用することができる。 That is, an appropriate position 30c of the connection member 30 such as an air hose of the existing suction member 8a is cut, and, for example, a fastening member 31 such as a screw is attached to the end of the connection member 30a to which the suction member 8a is connected. By attaching the attachment member 31 to the attachment portion 1a of the main body 1 and attaching the fastening member 32 to the end portion of the other cut connection member 30b, and attaching this fastening member 32 to the attachment portion 1b of the main body 1, An existing suction unit can be simply used as the article suction device A.

なお、本実施例にあっては、既存の吸着ユニットをねじ等の止着部材３１、３２により本体１に取り付けるため、止着部材３１、３２を本体１から取り外したときに第１弁孔４または第２弁孔５から例えば圧縮空気を本体１内に吹き込むことにより除去部材２１に付着したゴミ等の異物を簡便に除去することができる。 In this embodiment, since the existing suction unit is attached to the main body 1 by the fastening members 31 and 32 such as screws, the first valve hole 4 is removed when the fastening members 31 and 32 are removed from the main body 1. Alternatively, foreign matters such as dust adhering to the removing member 21 can be easily removed by blowing compressed air, for example, into the main body 1 from the second valve hole 5.

本発明の物品吸着装置の一実施例を示した縦断面図である。It is the longitudinal cross-sectional view which showed one Example of the article | item adsorption | suction apparatus of this invention. 図１の弁孔の要部を示す図であり、図２（ａ）は空気漏れ出し手段の例を、図２（ｂ）は図２（ａ）の弁孔を作動室側から見た図を、図２（ｃ）は中空の弁体に細孔を設けた図をそれぞれ示している。2A and 2B are diagrams showing a main part of the valve hole of FIG. 1, FIG. 2A is an example of air leakage means, and FIG. 2B is a view of the valve hole of FIG. FIG. 2 (c) shows a view in which pores are provided in a hollow valve body. 図１の物品吸着装置を複数個設けた状態を示す図である。It is a figure which shows the state provided with two or more articles | goods adsorption apparatuses of FIG. 図１の物品吸着状態の各工程を示す略縦断面図であり、図４（ａ）は減圧手段の作動開始時の図を、図４（ｂ）は吸着準備途中の図を、図４（ｃ）は吸着準備完了後の図を、図４（ｄ）は物品吸着時の図をそれぞれ示している。4 is a schematic longitudinal sectional view showing each step of the article adsorption state of FIG. 1, FIG. 4 (a) is a diagram at the start of operation of the decompression means, FIG. 4 (b) is a diagram in the middle of adsorption preparation, FIG. FIG. 4C shows a view after completion of the suction preparation, and FIG. 4D shows a view at the time of article suction. 図１の物品吸着装置の他の吸着部材の装着例を示した縦断面図である。It is the longitudinal cross-sectional view which showed the example of mounting | wearing with the other adsorption | suction member of the goods adsorption | suction apparatus of FIG.

符号の説明Explanation of symbols

Ａ物品吸着装置
１本体
２減圧手段
３作動室
４第１弁孔
４１第１空気漏れ出し手段
５第２弁孔
５１第２空気漏れ出し手段
６弁体
７弾性部材
８吸着部材
９螺旋状の溝 A article adsorbing device 1 body 2 pressure reducing means
3 Working chamber 4 First valve hole 41 First air leakage means 5 Second valve hole 51 Second air leakage means 6 Valve body 7 Elastic member 8 Adsorption member 9 Spiral groove

Claims

本体と、
この本体に接続され空気の吸引を行う減圧手段と、
前記本体に設けられ前記減圧手段に接続させて空気の吸引作用を行う作動室と、
この作動室内の前記減圧手段に接続される部位に開口した第1弁孔と、
前記作動室内の前記第1弁孔と反対側に開口した第２弁孔と、
前記作動室内に移動自在に設けられ前記第１弁孔と前記第２弁孔とに選択的に位置する弁体と、
前記作動室内に設けられ前記弁体を前記第２弁孔に向かって付勢する弾性部材と、
前記本体に接続され前記第２弁孔の外側に設けて物品を吸着する吸着部材と、
前記第１弁孔に設けられ前記弁体が当接したときに一部の空気が流通する第１空気漏れ出し手段と、
前記第２弁孔に設けられ前記弁体が当接したときに一部の空気が流通する第２空気漏れ出し手段とを備え、
前記作動室の内壁には前記第２弁孔側から前記第１弁孔側に向かって螺旋状の溝が設けられていることを特徴とする物品吸着装置。 The body,
Pressure reducing means connected to the main body for sucking air;
An operating chamber provided in the main body and connected to the decompression means to perform an air suction action;
A first valve hole opened to a portion connected to the pressure reducing means in the working chamber;
A second valve hole opened to the opposite side of the first valve hole in the working chamber;
A valve body provided movably in the working chamber and selectively positioned in the first valve hole and the second valve hole;
An elastic member provided in the working chamber and biasing the valve body toward the second valve hole;
An adsorbing member connected to the main body and provided outside the second valve hole to adsorb an article;
A first air leakage means provided in the first valve hole and through which a part of air flows when the valve body abuts;
A second air leakage means provided in the second valve hole and through which a part of the air flows when the valve body abuts,
An article adsorbing device, wherein an inner wall of the working chamber is provided with a spiral groove from the second valve hole side toward the first valve hole side.

既存の吸着部材に接続させた接続部材の途中を切断し、本体の第２弁孔側に、前記吸着部材に接続させた一方の接続部材を連結し、前記本体の第１弁孔側に、前記切断させた他方の接続部材を連結させたことを特徴とする請求項１記載の物品吸着装置。 Cut the middle of the connecting member connected to the existing adsorbing member, connect one connecting member connected to the adsorbing member to the second valve hole side of the main body, on the first valve hole side of the main body, 2. The article adsorbing device according to claim 1, wherein the other connection member cut is connected.

本体に、減圧手段による物品の吸着有無を検出する検出手段を設けたことを特徴とする請求項１記載の物品吸着装置。 2. The article adsorption apparatus according to claim 1, wherein the main body is provided with detection means for detecting whether or not the article is adsorbed by the decompression means.

本体は、透明な部材で形成されており、前記本体を通して外部から弁体が目視可能であることを特徴とする請求項１記載の物品吸着装置。 2. The article adsorbing device according to claim 1, wherein the main body is formed of a transparent member, and the valve body is visible from the outside through the main body.