JP3883171B2

JP3883171B2 - Suction pad

Info

Publication number: JP3883171B2
Application number: JP2000181713A
Authority: JP
Inventors: 幸治塩田
Original assignee: Fujitsu Telecom Networks Ltd
Current assignee: Fujitsu Telecom Networks Ltd
Priority date: 2000-06-16
Filing date: 2000-06-16
Publication date: 2007-02-21
Anticipated expiration: 2020-06-16
Also published as: JP2001353681A

Description

【０００１】
【発明の属する技術分野】
本発明は、各種部材を吸着して搬送するために使用される吸着パッドに関する。
【０００２】
【従来の技術】
従来、例えば、プリント基板上に種々の電子部品を実装することが行われている。
そして、このような実装技術では、図５に示すように、吸引ノズル１により電子部品２を吸着して、プリント基板上の所定位置まで搬送することが行われている。
【０００３】
【発明が解決しようとする課題】
しかしながら、このような従来の吸着方法では、図６に示すように、電子部品３の吸着面３ａに凹凸３ｂが存在すると、吸引ノズル１の先端面１ａと電子部品３の吸着面３ａとの間に間隙４が形成され、間隙４からの空気漏れにより吸着力が低下し、電子部品３を所定位置まで確実に搬送することが困難になるという問題があった。
【０００４】
なお、吸着面に凹凸が存在する電子部品としては、例えば、未封止タイプのトランスを挙げることができる。
本発明は、かかる従来の問題を解決するためになされたもので、凹凸等が存在する被吸着部材を確実に吸着することができる吸着パッドを提供することを目的とする。
【０００５】
【課題を解決するための手段】
請求項１の吸着パッドは、可撓性材料からなり軸長方向に貫通穴が形成され後端に吸引ノズルが接続されるとともに先端を被吸着部材に当接される本体部と、前記本体部の外周に前記貫通穴を中心にして一体形成され先端に向けて順次拡径される外側拡径部と、前記本体部の外周に前記貫通穴を中心にして一体形成され前記外側拡径部の内側に位置される内側拡径部とを有し、前記外側拡径部の先端部より奥側に、前記内側拡径部の先端部を位置させ、前記内側拡径部の先端部より奥側に、前記本体部の先端を位置させるとともに、前記本体部の前記外側拡径部と内側拡径部との間に前記貫通穴に連通する第１の連通穴を形成し、前記本体部の先端と前記内側拡径部との間に前記貫通穴に連通する第２の連通穴を形成してなることを特徴とする。
【０００６】
請求項２の吸着パッドは、請求項１記載の吸着パッドにおいて、前記本体部の後端側と前記外側拡径部との間に、蛇腹部を形成してなることを特徴とする。
【０００７】
請求項３の吸着パッドは、請求項１または請求項２記載の吸着パッドにおいて、前記外側拡径部および内側拡径部の先端部を、断面円弧状に形成してなることを特徴とする。
【０００８】
請求項４の吸着パッドは、請求項１ないし請求項３のいずれか１項記載の吸着パッドにおいて、前記本体部の先端に、凹凸を形成してなることを特徴とする。
【００１０】
（作用）
請求項１の吸着パッドでは、吸引ノズルが接続される本体部に、先端に向けて順次拡径される外側拡径部が形成され、さらに、外側拡径部の内側に内側拡径部が形成される。
そして、吸引ノズルから空気を吸引すると、外側拡径部の先端部および内側拡径部の先端部が、被吸着部材の表面に密着される。
また、外側拡径部の先端部より奥側に、内側拡径部の先端部が位置される。
そして、被吸着部材の吸着時には、外側拡径部の先端部が被吸着部材に密着した後に、内側拡径部の先端部が被吸着部材に密着される。
一方、被吸着部材の離脱時には、内側拡径部の先端部が被吸着部材から離脱した後に、外側拡径部の先端部が被吸着部材から離脱される。
また、内側拡径部の先端部より奥側に、本体部の先端が位置される。
そして、被吸着部材の吸着時には、内側拡径部の先端部が被吸着部材に密着した後に、本体部の先端が被吸着部材に密着される。
一方、被吸着部材の離脱時には、本体部の先端が被吸着部材から離脱した後に、内側拡径部の先端部が被吸着部材から離脱される。
さらに、本体部の外側拡径部と内側拡径部との間に連通穴が形成され、この連通穴により、外側拡径部の内側近傍の空気が確実に吸引される。
また、本体部の先端と内側拡径部との間に連通穴が形成され、この連通穴により、内側拡径部の内側近傍の空気が確実に吸引される。
【００１１】
請求項２の吸着パッドでは、本体部の後端側と外側拡径部との間に、蛇腹部が形成される。
そして、外側拡径部および内側拡径部が、被吸着部材に所定圧力以上の圧力で押圧されると、蛇腹部が変形し、被吸着部材に対する衝撃が緩和される。
【００１２】
請求項３の吸着パッドでは、外側拡径部および内側拡径部の先端部が、断面円弧状に形成される。
【００１３】
そして、被吸着部材の吸着時には、外側拡径部および内側拡径部の断面円弧状の先端部が被吸着部材に密着される。
【００１４】
請求項４の吸着パッドでは、本体部の先端に、凹凸が形成される。
そして、被吸着部材の吸着時に、本体部の先端が被吸着部材に対して滑ることが防止される。
【００１６】
【発明の実施の形態】
以下、本発明の詳細を図面に示す実施形態について説明する。
図１ないし図３は、本発明の吸着パッドの一実施形態を示している。
この実施形態の吸着パッドは、天然ゴム（ＮＲ），ニトリルゴム（ＮＢＲ），フッ素ゴム（ＦＫＭ），ウレタンゴム（Ｕ）等の軟質ゴムにより形成されている。
【００１７】
図１ないし図３において、符号１１は、本体部を示している。
この本体部１１の中心には、軸長方向に貫通穴１１ａが形成されている。
本体部１１の後端には、吸引ノズル１３の先端が嵌合される円形状の取付穴１１ｂが形成されている。
本体部１１の取付穴１１ｂの下方には、蛇腹部１１ｃが一体形成されている。
【００１８】
そして、貫通穴１１ａは、蛇腹部１１ｃの下方において、先端に向けてラッパ状に順次拡径されている。
本体部１１の蛇腹部１１ｃの下方には、外側拡径部１５が傘状に形成されている。
【００１９】
この外側拡径部１５は、本体部１１の外周に貫通穴１１ａを中心にして一体形成され、先端に向けて順次拡径されている。
外側拡径部１５の先端部１５ａは、断面円弧状に形成されている。
また、外側拡径部１５の下方には、内側拡径部１７が傘状に形成されている。この内側拡径部１７は、本体部１１の外周に貫通穴１１ａを中心にして一体形成され、外側拡径部１５の内側に位置されている。
【００２０】
内側拡径部１７の先端部１７ａは、断面円弧状に形成されている。
そして、内側拡径部１７の内側には、本体部１１が突出され突出部１１ｄが形成されている。
この突出部１１ｄの先端には、ローレット目状の凹凸１１ｅが形成されている。
そして、この実施形態では、外側拡径部１５の先端部１５ａより奥側に、内側拡径部１７の先端部１７ａが位置されている。
【００２１】
また、内側拡径部１７の先端部１７ａより奥側に、本体部１１の突出部１１ｄの先端が位置されている。
すなわち、この実施形態では、外側拡径部１５の先端部１５ａから、軸長方向の寸法がＨ１の位置に、内側拡径部１７の先端部１７ａが位置され、また、外側拡径部１５の先端部１５ａから、軸長方向の寸法がＨ２の位置に、突出部１１ｄの先端が位置され、寸法Ｈ２が、寸法Ｈ１より大きくされている。
【００２２】
そして、本体部１１の外側拡径部１５と内側拡径部１７との間に第１の連通穴１１ｆが形成されている。
また、本体部１１の先端の突出部１１ｄに第２の連通穴１１ｈが形成されている。
第２の連通穴１１ｈの穴径は、第１の連通穴１１ｆの穴径より大径とされている。
【００２３】
なお、この実施形態の吸着パッドは、本体部１１の後端から外側拡径部１５の先端部１５ａまでの高さが、例えば、１０ｍｍとされ、外側拡径部１５の先端部１５ａの外径が、例えば、１０ｍｍとされている。
そして、吸着パッドの取付穴１１ｂには、プリント基板に電子部品を実装するためのＳＭＤ装着装置の吸引ノズル１３が接続されて使用される。
【００２４】
図４は、上述した吸着パッドを使用して被吸着部材１９を吸着している状態を示している。
被吸着部材１９の吸着面１９ａの中央には、例えば、高さが０．２ｍｍ、外径が０．５ｍｍから１．０ｍｍ程度の第１の凸部１９ｂが形成されている。
また、第１の凸部１９ｂの左側には、第１の凸部１９ｂより小さい円弧状の第２の凸部１９ｃが形成されている。
【００２５】
そして、第２の凸部１９ｃの上面に内側拡径部１７の先端部１７ａが位置され、第１の凸部１９ｂの上面に本体部１１の突出部１１ｄの先端が位置されている。
そして、吸引ノズル１３により、図４の矢符方向に空気が吸引され、外側拡径部１５，内側拡径部１７および本体部１１の突出部１１ｄの先端が、被吸着部材１９に密着されている。
【００２６】
上述した吸着パッドでは、吸引ノズル１３が接続される本体部１１に、先端に向けて順次拡径される外側拡径部１５を形成し、さらに、外側拡径部１５の内側に内側拡径部１７を形成したので、被吸着部材１９に凹凸等が存在する場合にも空気漏れが少なくなり、凹凸等が存在する被吸着部材１９を確実に吸着することができる。
【００２７】
すなわち、図４の状態では、第２の凹部１９ｃの上面に内側拡径部１７の先端部１７ａが位置しているため、内側拡径部１７の先端部１７ａに多少の空気漏れが生じるおそれがあるが、外側拡径部１５の先端部１５ａおよび本体部１１の突出部１１ｄの先端が、被吸着部材１９に密着しているため、被吸着部材１９の吸着面１９ａに第１の凸部１９ｂおよび第２の凸部１９ｃが存在するにもかかわらず、被吸着部材１９を確実に吸着することができる。
【００２８】
また、上述した吸着パッドでは、本体部１１の後端側と外側拡径部１５との間に、蛇腹部１１ｃを形成したので、蛇腹部１１ｃの変形により、被吸着部材１９に対する衝撃を緩和することができる。
すなわち、装置の誤動作あるいは被吸着部材１９の寸法誤差等により、吸引ノズル１３を介して、本体部１１の先端に所定圧力以上の圧力が作用すると、蛇腹部１１ｃが縮む方向に変形するため、被吸着部材１９に対する衝撃を緩和することができる。
【００２９】
さらに、上述した吸着パッドでは、外側拡径部１５の先端部１５ａが被吸着部材１９に密着した後に、内側拡径部１７の先端部１７ａが被吸着部材１９に密着されるため、内側拡径部１７に吸引を邪魔されることなく外側拡径部１５の先端部１５ａを被吸着部材１９に確実に密着することができる。
また、被吸着部材１９の離脱時には、内側拡径部１７の先端部１７ａが被吸着部材１９から離脱した後に、外側拡径部１５の先端部１５ａが被吸着部材１９から離脱されるため、被吸着部材１９を確実に離脱することができる。
【００３０】
そして、同様に、内側拡径部１７の先端部１７ａが被吸着部材１９に密着した後に、本体部１１の先端が被吸着部材１９に密着されるため、本体部１１の先端に吸引を邪魔されることなく内側拡径部１７の先端部１７ａを被吸着部材１９に確実に密着することができる。
また、被吸着部材１９の離脱時には、本体部１１の先端が被吸着部材１９から離脱した後に、内側拡径部１７の先端部１７ａが被吸着部材１９から離脱されるため、被吸着部材１９を確実に離脱することができる。
【００３１】
そして、上述した吸着パッドでは、外側拡径部１５および内側拡径部１７の先端部１５ａ，１７ａを、断面円弧状に形成したので、外側拡径部１５および内側拡径部１７を、被吸着部材１９に確実に密着することができる。
【００３２】
すなわち、図４に示したように、外側拡径部１５および内側拡径部１７が被吸着部材１９に押圧されて変形した場合にも、断面円弧状の先端部１５ａ，１７ａが被吸着部材１９に常に密着することになり、密着性を高めることができる。
さらに、上述した吸着パッドでは、本体部１１の先端に、凹凸１１ｅを形成したので、被吸着部材１９の吸着時に、本体部１１の先端が被吸着部材１９に対して滑ることがなくなり、本体部１１の先端を被吸着部材１９に確実に密着することができる。
【００３３】
そして、本体部１１の先端が、被吸着部材１９に密着されるため、外側拡径部１５および内側拡径部１７の先端部１５ａ，１７ａが所定量以上に大きく変形することを確実に防止することができる。
また、上述した吸着パッドでは、本体部１１の外側拡径部１５と内側拡径部１７との間に第１の連通穴１１ｆを形成したので、外側拡径部１５の内側近傍の空気を確実に吸引することが可能になり、外側拡径部１５を被吸着部材１９に確実に吸着することができる。
【００３４】
そして、同様に、本体部１１の先端と内側拡径部１７との間に第２の連通穴１１ｈを形成したので、内側拡径部１７の内側近傍の空気を確実に吸引することが可能になり、内側拡径部１７を被吸着部材１９に確実に吸着することができる。また、上述した吸着パッドでは、本体部１１に形成される貫通穴１１ａの下部をラッパ状に形成したので、吸引力を向上することができる。
【００３５】
そして、上述した吸着パッドでは、第２の連通穴１１ｈを第１の連通穴１１ｆより大径にしたので、内側拡径部１７の先端部１７ａを、被吸着部材１９の凹凸に対応して動き易くすることができる。
なお、上述した実施形態では、本発明を電子部品の搬送用の吸着パッドに適用した例について説明したが、本発明はかかる実施形態に限定されるものではなく、例えば、建設用の鋼材等の搬送用の吸着パッド等に広く適用することができる。
【００３６】
また、上述した実施形態では、吸着パッドを軟質ゴムにより形成した例について説明したが、本発明はかかる実施形態に限定されるものではなく、例えば、軟質樹脂等の可撓性材料により形成しても良い。
【００３７】
【発明の効果】
以上述べたように、請求項１の吸着パッドでは、吸引ノズルが接続される本体部に、先端に向けて順次拡径される外側拡径部を形成し、さらに、外側拡径部の内側に内側拡径部を形成したので、被吸着部材に凹凸等が存在する場合にも空気漏れが少なくなり、凹凸等が存在する被吸着部材を確実に吸着することができる。
また、外側拡径部の先端部が被吸着部材に密着した後に、内側拡径部の先端部が被吸着部材に密着されるため、内側拡径部に吸引を邪魔されることなく外側拡径部の先端部を被吸着部材に確実に密着することができる。
そして、被吸着部材の離脱時には、内側拡径部の先端部が被吸着部材から離脱した後に、外側拡径部の先端部が被吸着部材から離脱されるため、被吸着部材を確実に離脱することができる。
また、内側拡径部の先端部が被吸着部材に密着した後に、本体部の先端が被吸着部材に密着されるため、本体部の先端に吸引を邪魔されることなく内側拡径部の先端部を被吸着部材に確実に密着することができる。
そして、被吸着部材の離脱時には、本体部の先端が被吸着部材から離脱した後に、内側拡径部の先端部が被吸着部材から離脱されるため、被吸着部材を確実に離脱することができる。
また、本体部の外側拡径部と内側拡径部との間に連通穴を形成したので、外側拡径部の内側近傍の空気を確実に吸引することが可能になり、外側拡径部を被吸着部材に確実に吸着することができる。
そして、本体部の先端と内側拡径部との間に連通穴を形成したので、内側拡径部の内側近傍の空気を確実に吸引することが可能になり、内側拡径部を被吸着部材に確実に吸着することができる。
【００３８】
請求項２の吸着パッドでは、本体部の後端側と外側拡径部との間に、蛇腹部を形成したので、蛇腹部の変形により、被吸着部材に対する衝撃を緩和することができる。
【００３９】
請求項３の吸着パッドでは、外側拡径部および内側拡径部の先端部を、断面円弧状に形成したので、外側拡径部および内側拡径部を、被吸着部材に確実に密着することができる。
【００４１】
請求項４の吸着パッドでは、本体部の先端に、凹凸を形成したので、被吸着部材の吸着時に、本体部の先端が被吸着部材に対して滑ることがなくなり、本体部の先端を被吸着部材に確実に密着することができる。
【図面の簡単な説明】
【図１】本発明の吸着パッドの一実施形態を示す断面図である。
【図２】図１の吸着パッドを示す側面図である。
【図３】図１の吸着パッドを示す正面図である。
【図４】図１の吸着パッドにより被吸着部材を吸着している状態を示す説明図である。
【図５】従来の電子部品の吸着方法を示す説明図である。
【図６】従来の電子部品の吸着方法を示す説明図である。
【符号の説明】
１１本体部
１１ａ貫通穴
１１ｃ蛇腹部
１１ｅ凹凸
１１ｆ第１の連通穴
１１ｈ第２の連通穴
１３吸引ノズル
１５外側拡径部
１５ａ先端部
１７内側拡径部
１７ａ先端部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suction pad used for sucking and transporting various members.
[0002]
[Prior art]
Conventionally, for example, various electronic components are mounted on a printed circuit board.
And in such a mounting technique, as shown in FIG. 5, the electronic component 2 is attracted | sucked by the suction nozzle 1, and it conveys to the predetermined position on a printed circuit board.
[0003]
[Problems to be solved by the invention]
However, in such a conventional suction method, as shown in FIG. 6, when unevenness 3 b exists on the suction surface 3 a of the electronic component 3, the gap between the tip surface 1 a of the suction nozzle 1 and the suction surface 3 a of the electronic component 3 is between. There is a problem in that the gap 4 is formed in the gap 4 and the suction force decreases due to air leakage from the gap 4, making it difficult to reliably transport the electronic component 3 to a predetermined position.
[0004]
An example of the electronic component having unevenness on the suction surface is an unsealed transformer.
The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a suction pad that can reliably suck a member to be sucked having irregularities and the like.
[0005]
[Means for Solving the Problems]
The suction pad according to claim 1 is made of a flexible material and has a through hole formed in the axial length direction. A suction nozzle is connected to the rear end of the suction pad, and a front end abuts against the member to be sucked. An outer diameter-enlarged portion that is integrally formed around the through-hole and is gradually expanded toward the tip, and an outer-diameter portion that is integrally formed around the through-hole at the outer periphery of the main body portion. An inner diameter-enlarged portion positioned on the inner side, the distal end portion of the inner larger-diameter portion is positioned behind the distal end portion of the outer larger-diameter portion, and the rear side from the distal end portion of the inner larger-diameter portion And a first communication hole communicating with the through hole is formed between the outer diameter-expanded portion and the inner diameter-expanded portion of the main body portion, and the front end of the main body portion is formed. It is characterized in the said through it by forming a second communication hole communicating with the bore between the inner diameter portion and .
[0006]
Suction pad according to claim 2, in the adsorption pad of claim 1, wherein, between the rear end and the outer diameter portion of the main body portion, you characterized by being obtained by forming a bellows portion.
[0007]
Suction pad according to claim 3, in the adsorption pad of claim 1 or claim 2 wherein the tip portion of the outer diameter portion and inner diameter portion, you characterized by being formed into an arc-shaped cross section .
[0008]
Suction pad according to claim 4, in the adsorption pad according to any one of claims 1 to 3, the tip of the body portion, characterized by being obtained by forming irregularities.
[0010]
(Function)
In the suction pad according to claim 1, an outer diameter-enlarged portion that is gradually expanded toward the tip is formed in the main body portion to which the suction nozzle is connected, and further, an inner-diameter enlarged portion is formed inside the outer diameter-enlarged portion. Is done.
Then, when air is sucked from the suction nozzle, the distal end portion of the outer enlarged diameter portion and the distal end portion of the inner enlarged diameter portion are brought into close contact with the surface of the attracted member.
Moreover, the front-end | tip part of an inner side enlarged diameter part is located in the back | inner side rather than the front-end | tip part of an outer side enlarged diameter part.
And at the time of adsorption | suction of a to-be-adsorbed member, after the front-end | tip part of an outer side enlarged diameter part closely_contact | adheres to a to-be-adsorbed member, the front-end | tip part of an inner side enlarged diameter part closely_contact | adheres to a to-be-adsorbed member.
On the other hand, when the attracted member is detached, the distal end portion of the outer enlarged diameter portion is detached from the attracted member after the distal end portion of the inner enlarged diameter portion is detached from the attracted member.
Moreover, the front-end | tip of a main-body part is located in the back | inner side from the front-end | tip part of an inner side enlarged diameter part.
And at the time of adsorption | suction of a to-be-adsorbed member, after the front-end | tip part of an inner side enlarged diameter part closely_contact | adhered to a to-be-adsorbed member, the front-end | tip of a main-body part closely_contact | adheres to an adsorbed member.
On the other hand, when the attracted member is detached, the distal end portion of the inner diameter enlarged portion is detached from the attracted member after the distal end of the main body is detached from the attracted member.
Further, a communication hole is formed between the outer diameter-enlarged portion and the inner diameter-enlarged portion of the main body, and the air near the inner side of the outer diameter-enlarged portion is reliably sucked by this communication hole.
Further, a communication hole is formed between the tip of the main body and the inner diameter-enlarged portion, and the air near the inner side of the inner diameter-enlarged portion is reliably sucked by this communication hole.
[0011]
In the suction pad of the second aspect, the bellows part is formed between the rear end side of the main body part and the outer diameter enlarged part.
The outer diameter portion and inner diameter portion and is pressed at a predetermined pressure or higher pressure to a suction member, the bellows portion is deformed, Ru is CUSHIONED respect to the adsorption member.
[0012]
In the suction pad according to the third aspect , the distal end portions of the outer diameter-increasing portion and the inner diameter-increasing portion are formed in an arc shape in cross section.
[0013]
Then, when the suction of the suction members, arcuate cross-section of the distal end portion of the outer diameter portion and inner diameter portion Ru is adhered to the suction member.
[0014]
In the suction pad according to the fourth aspect , irregularities are formed at the tip of the main body.
Then, the tip of the main body is prevented from slipping with respect to the attracted member when the attracted member is attracted.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention shown in the drawings will be described in detail.
1 to 3 show an embodiment of the suction pad of the present invention.
The suction pad of this embodiment is made of soft rubber such as natural rubber (NR), nitrile rubber (NBR), fluoro rubber (FKM), urethane rubber (U).
[0017]
In FIG. 1 thru | or FIG. 3, the code | symbol 11 has shown the main-body part.
A through hole 11 a is formed at the center of the main body 11 in the axial direction.
A circular attachment hole 11 b into which the tip of the suction nozzle 13 is fitted is formed at the rear end of the main body 11.
A bellows portion 11 c is integrally formed below the attachment hole 11 b of the main body portion 11.
[0018]
And the through-hole 11a is diameter-expanded sequentially in the trumpet shape toward the front-end | tip under the bellows part 11c.
Below the bellows portion 11c of the main body portion 11, an outer enlarged diameter portion 15 is formed in an umbrella shape.
[0019]
The outer diameter-enlarged portion 15 is integrally formed on the outer periphery of the main body portion 11 with the through hole 11a as a center, and the diameter is gradually increased toward the tip.
The distal end portion 15a of the outer diameter-enlarged portion 15 is formed in a circular arc shape in cross section.
Further, below the outer diameter-enlarged portion 15, an inner diameter-enlarged portion 17 is formed in an umbrella shape. The inner diameter enlarged portion 17 is integrally formed on the outer periphery of the main body portion 11 with the through hole 11 a as a center, and is positioned inside the outer diameter enlarged portion 15.
[0020]
The tip end portion 17a of the inner diameter enlarged portion 17 is formed in a circular arc shape in cross section.
And the main-body part 11 protrudes inside the inner diameter expansion part 17, and the protrusion part 11d is formed.
A knurled irregularity 11e is formed at the tip of the protruding portion 11d.
And in this embodiment, the front-end | tip part 17a of the inner side enlarged diameter part 17 is located in the back | inner side rather than the front-end | tip part 15a of the outer side enlarged diameter part 15. FIG.
[0021]
Further, the distal end of the projecting portion 11 d of the main body portion 11 is located on the back side from the distal end portion 17 a of the inner diameter enlarged portion 17.
That is, in this embodiment, the distal end portion 17a of the inner diameter-expanded portion 17 is positioned from the distal end portion 15a of the outer diameter-expanded portion 15 to the position where the dimension in the axial length direction is H1. From the tip portion 15a, the tip of the protruding portion 11d is located at a position where the dimension in the axial length direction is H2, and the dimension H2 is larger than the dimension H1.
[0022]
A first communication hole 11 f is formed between the outer diameter-enlarged portion 15 and the inner diameter-enlarged portion 17 of the main body portion 11.
A second communication hole 11 h is formed in the protrusion 11 d at the tip of the main body 11.
The diameter of the second communication hole 11h is larger than the diameter of the first communication hole 11f.
[0023]
In the suction pad of this embodiment, the height from the rear end of the main body portion 11 to the distal end portion 15a of the outer enlarged diameter portion 15 is, for example, 10 mm, and the outer diameter of the distal end portion 15a of the outer enlarged diameter portion 15 is set. Is, for example, 10 mm.
And the suction nozzle 13 of the SMD mounting apparatus for mounting an electronic component on a printed circuit board is connected and used for the attachment hole 11b of a suction pad.
[0024]
FIG. 4 shows a state in which the member to be sucked 19 is sucked using the suction pad described above.
In the center of the attracting surface 19a of the attracted member 19, for example, a first convex portion 19b having a height of 0.2 mm and an outer diameter of about 0.5 mm to 1.0 mm is formed.
Further, an arc-shaped second convex portion 19c smaller than the first convex portion 19b is formed on the left side of the first convex portion 19b.
[0025]
And the front-end | tip part 17a of the inner side enlarged diameter part 17 is located in the upper surface of the 2nd convex part 19c, and the front-end | tip of the protrusion part 11d of the main-body part 11 is located in the upper surface of the 1st convex part 19b.
Then, air is sucked in the direction of the arrow in FIG. 4 by the suction nozzle 13, and the distal end of the outer enlarged portion 15, the inner enlarged portion 17, and the protruding portion 11 d of the main body 11 is brought into close contact with the attracted member 19. Yes.
[0026]
In the suction pad described above, the main body portion 11 to which the suction nozzle 13 is connected is formed with the outer diameter-expanding portion 15 that is gradually expanded toward the tip, and further, the inner diameter-expanding portion is inside the outer diameter-expanding portion 15. Since 17 is formed, air leakage is reduced even when unevenness or the like exists in the member to be attracted 19, and the attracted member 19 having the unevenness or the like can be reliably adsorbed.
[0027]
That is, in the state of FIG. 4, the distal end portion 17 a of the inner enlarged diameter portion 17 is located on the upper surface of the second recess 19 c, and thus there is a possibility that some air leakage occurs at the distal end portion 17 a of the inner enlarged diameter portion 17. However, since the distal end portion 15a of the outer diameter-enlarged portion 15 and the distal end of the protruding portion 11d of the main body portion 11 are in close contact with the attracted member 19, the first convex portion 19b is formed on the attracting surface 19a of the attracted member 19. In spite of the presence of the second convex portion 19c, the attracted member 19 can be reliably adsorbed.
[0028]
Further, in the above-described suction pad, the bellows portion 11c is formed between the rear end side of the main body portion 11 and the outer diameter-enlarged portion 15, so that the impact on the attracted member 19 is reduced by the deformation of the bellows portion 11c. be able to.
That is, if a pressure higher than a predetermined pressure is applied to the tip of the main body 11 via the suction nozzle 13 due to malfunction of the apparatus or a dimensional error of the attracted member 19, the bellows 11c is deformed in a contracting direction. The impact on the adsorption member 19 can be reduced.
[0029]
Further, in the above-described suction pad, since the distal end portion 17a of the inner enlarged diameter portion 17 is brought into close contact with the attracted member 19 after the distal end portion 15a of the outer enlarged diameter portion 15 is brought into close contact with the attracted member 19, the inner enlarged diameter. The distal end portion 15 a of the outer diameter-enlarged portion 15 can be securely adhered to the attracted member 19 without the suction of the portion 17.
Further, when the attracted member 19 is detached, the distal end portion 15a of the outer enlarged diameter portion 15 is detached from the attracted member 19 after the distal end portion 17a of the inner enlarged diameter portion 17 is detached from the attracted member 19, so The adsorption member 19 can be reliably removed.
[0030]
Similarly, after the distal end portion 17 a of the inner diameter enlarged portion 17 is in close contact with the attracted member 19, the distal end of the main body portion 11 is in close contact with the attracted member 19. The tip end portion 17a of the inner diameter enlarged portion 17 can be securely adhered to the attracted member 19 without any problem.
Further, when the attracted member 19 is detached, the distal end portion 17a of the inner diameter enlarged portion 17 is detached from the attracted member 19 after the distal end of the main body portion 11 is detached from the attracted member 19, so that the attracted member 19 is It is possible to leave without fail.
[0031]
And in the suction pad mentioned above, since the front-end | tip parts 15a and 17a of the outer side enlarged part 15 and the inner side enlarged part 17 were formed in cross-sectional arc shape, the outer side enlarged part 15 and the inner side enlarged part 17 are attracted | sucked. The member 19 can be securely adhered.
[0032]
That is, as shown in FIG. 4, even when the outer diameter-enlarged portion 15 and the inner diameter-enlarged portion 17 are pressed and deformed by the attracted member 19, the tip portions 15 a and 17 a having a circular arc cross section are formed. It is possible to improve the adhesion.
Further, in the above-described suction pad, since the unevenness 11e is formed at the tip of the main body 11, the tip of the main body 11 does not slide with respect to the sucked member 19 when the sucked member 19 is sucked. 11 can be brought into close contact with the member 19 to be attracted.
[0033]
And since the front-end | tip of the main-body part 11 is closely_contact | adhered to the to-be-adsorbed member 19, it reliably prevents that the front-end | tip parts 15a and 17a of the outer side enlarged diameter part 15 and the inner side enlarged diameter part 17 deform | transform large more than predetermined amount. be able to.
In the above-described suction pad, since the first communication hole 11f is formed between the outer diameter-enlarged portion 15 and the inner diameter-enlarged portion 17 of the main body portion 11, air in the vicinity of the inner side of the outer diameter-enlarged portion 15 is surely secured. Thus, the outer diameter-enlarged portion 15 can be reliably attracted to the attracted member 19.
[0034]
Similarly, since the second communication hole 11h is formed between the tip of the main body 11 and the inner enlarged diameter portion 17, it is possible to reliably suck the air in the vicinity of the inner enlarged diameter portion 17. Thus, the inner diameter enlarged portion 17 can be reliably adsorbed to the adsorbed member 19. Moreover, in the suction pad mentioned above, since the lower part of the through-hole 11a formed in the main-body part 11 was formed in the trumpet shape, suction force can be improved.
[0035]
In the suction pad described above, since the second communication hole 11h has a larger diameter than the first communication hole 11f, the distal end portion 17a of the inner enlarged diameter portion 17 moves corresponding to the unevenness of the attracted member 19. Can be made easier.
In the above-described embodiment, the example in which the present invention is applied to the suction pad for transporting an electronic component has been described. However, the present invention is not limited to such an embodiment, for example, a steel material for construction or the like. The present invention can be widely applied to a suction pad for conveyance.
[0036]
In the above-described embodiment, the example in which the suction pad is formed of soft rubber has been described. However, the present invention is not limited to such an embodiment. For example, the suction pad is formed of a flexible material such as a soft resin. Also good.
[0037]
【The invention's effect】
As described above, in the suction pad according to the first aspect, the main body portion to which the suction nozzle is connected is formed with the outer diameter-expanding portion that is gradually enlarged toward the tip, and further inside the outer diameter-expansion portion. Since the inner diameter enlarged portion is formed, air leakage is reduced even when unevenness or the like exists in the member to be adsorbed, and the adsorbed member having the unevenness or the like can be reliably adsorbed.
In addition, since the tip of the inner enlarged portion is in close contact with the attracted member after the distal end of the outer enlarged portion is in close contact with the attracted member, the outer enlarged diameter is not obstructed by the inner enlarged portion. The tip part of the part can be reliably adhered to the attracted member.
When the member to be attracted is detached, the tip of the inner enlarged portion is separated from the member to be adsorbed, and then the tip of the outer diameter enlarged portion is detached from the member to be adsorbed. be able to.
In addition, since the tip of the main body is in close contact with the attracted member after the tip of the inner diameter enlarged portion is in close contact with the sucked member, the tip of the inner widened portion is not obstructed by the tip of the main body. The portion can be securely adhered to the attracted member.
When the member to be attracted is detached, since the tip of the inner diameter enlarged portion is separated from the member to be adsorbed after the tip of the main body is separated from the member to be adsorbed, the member to be adsorbed can be surely detached. .
In addition, since the communication hole is formed between the outer diameter-enlarged portion and the inner diameter-enlarged portion of the main body, it becomes possible to reliably suck the air in the vicinity of the inner side of the outer-diameter portion. It can be reliably adsorbed to the adsorbed member.
And since the communication hole was formed between the front-end | tip of a main-body part and an inner side enlarged diameter part, it becomes possible to attract | suck the air of the inner side vicinity of an inner side enlarged part reliably, and an inner side enlarged diameter part can be adsorbed member Can be reliably adsorbed.
[0038]
The suction pad according to claim 2, between the rear end and the outer diameter of the body portion, so to form a bellows portion, the deformation of the bellows portion, Ru can alleviate the impact with respect to the adsorption member.
[0039]
In the suction pad according to the third aspect , since the tip end portions of the outer diameter-increasing portion and the inner diameter-increasing portion are formed in a circular arc shape, the outer diameter-increasing portion and the inner diameter-increasing portion are securely adhered to the attracted member. Can do.
[0041]
In the suction pad according to the fourth aspect , since the unevenness is formed at the tip of the main body, the tip of the main body does not slide with respect to the sucked member when the sucked member is sucked, and the tip of the main body is sucked. It can adhere to a member reliably.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a suction pad of the present invention.
FIG. 2 is a side view showing the suction pad of FIG.
3 is a front view showing the suction pad of FIG. 1. FIG.
4 is an explanatory view showing a state in which a member to be sucked is sucked by the suction pad of FIG. 1; FIG.
FIG. 5 is an explanatory view showing a conventional electronic component suction method.
FIG. 6 is an explanatory view showing a conventional electronic component suction method.
[Explanation of symbols]
11 Main body part 11a Through hole 11c Bellows part 11e Concavity and convexity 11f First communication hole 11h Second communication hole 13 Suction nozzle 15 Outer diameter enlarged part 15a Tip part 17 Inner diameter enlarged part 17a Tip part

Claims

A body portion made of a flexible material and having a through-hole formed in the axial length direction, a suction nozzle connected to the rear end, and a front end abutting the attracted member ;
An outer diameter-enlarged portion that is integrally formed around the through-hole on the outer periphery of the main body and is gradually expanded toward the tip;
An inner diameter enlarged portion integrally formed around the through hole on the outer periphery of the main body and positioned inside the outer diameter enlarged portion ;
The distal end portion of the inner enlarged diameter portion is positioned behind the distal end portion of the outer enlarged diameter portion, the distal end of the main body portion is located behind the distal end portion of the inner enlarged diameter portion, and the main body. Forming a first communication hole that communicates with the through hole between the outer diameter-enlarged portion and the inner diameter-enlarged portion, and the through-hole between the tip of the main body portion and the inner diameter-enlarged portion. A suction pad formed by forming a second communication hole for communication .

The suction pad according to claim 1,
A suction pad, wherein a bellows portion is formed between a rear end side of the main body portion and the outer diameter enlarged portion.

The suction pad according to claim 1 or 2 ,
The suction pad, wherein the outer diameter-expanded portion and the tip end portion of the inner diameter-expanded portion are formed in a cross-sectional arc shape .

The suction pad according to any one of claims 1 to 3 ,
A suction pad characterized by forming irregularities at the tip of the main body .