JP4048285B2

JP4048285B2 - Front / back sorting mechanism for parts of vibrating parts feeder

Info

Publication number: JP4048285B2
Application number: JP3042598A
Authority: JP
Inventors: 賢山本
Original assignee: 神鋼電機株式会社
Priority date: 1998-01-28
Filing date: 1998-01-28
Publication date: 2008-02-20
Anticipated expiration: 2018-01-28
Also published as: JPH11208870A

Description

【０００１】
【発明の属する技術分野】
本発明は振動パーツフィーダの部品の表裏選別機構に関するものであり、更に詳しくは、振動パーツフィーダに取り付けられる、浅い角皿状部品についての表裏選別機構に関するものである。
【０００２】
【従来の技術】
図１は振動パーツフィーダによって表裏を選別して次工程へ供給することが要請されている浅い角皿状の部品Ｑを示す図であり、図１のＡは平面図、図１のＢは図１のＡにおける［Ｂ］−［Ｂ］線方向の断面図、図１のＣは図１のＡにおける［Ｃ］−［Ｃ］線方向の断面図である。部品Ｑの全体は高温成形性および電気絶縁性に優れたフリントガラスまたはセラミックスで作製されており、そのサイズは、例えば、長辺Ｌは７ｍｍ、短辺Ｗは５ｍｍ、全高Ｈは１ｍｍ、側壁部Ｑｗの厚さＥは０．９ｍｍ、高さＦは０．２５ｍｍである。従って部品Ｑの内法長さｌは５．２ｍｍ、内法幅ｗは３．２ｍｍである。部品Ｑは水晶振動子と共に使用される。
【０００３】
上記の部品Ｑを、図１のＣに示すように、側壁部Ｑｗを上にした表向きとして長辺Ｌの方向へ移送し次工程へ供給することの要請があるが、このような浅い角皿状の部品Ｑの表裏を整えて移送し供給し得るような振動パーツフィーダは現時点では未だ開発されていない。
【０００４】
比較的類似した部品として、図１３の斜視図に示すような、円筒形のキャップ状部品Ｐについて、開口側を上にした部品Ｐのみを次工程へ供給するための表裏選別機構を備えた振動パーツフィーダは既に存在している。このような振動パーツフィーダ１は、その部分破断側面図である図１４に示すように、部品Ｐを収容し移送するボウル１２１と、これに捩り振動を与える駆動部１１１とからなるが、駆動部１１１においては、ボウル１２１の底板と一体的に固定された可動ブロック１１２が等角度間隔に配置した傾斜板ばね１１３によって下方の固定ブロック１１４と連結されており、固定ブロック１１４上にはコイル１１５を巻装した電磁石１１６が可動ブロック１１２の下面の可動コア１１２Ｃと僅かの間隙をあけ対向して固定されている。駆動部１１１は、その周囲を防音カバー１１７で覆われており、防振ゴム１１８を介して基盤上に設置されている。
【０００５】
ボウル１２１内においては、その底面から周壁１２３に沿ってスパイラル状に上昇するトラック１２４が形成されており部品Ｐの移送路となる。収容されるキャップ状の部品Ｐの中から、開口側を上にした部品Ｐのみを次工程へ供給するために、図１５、図１６に示すような表裏選別機構１４１がトラック１２４の排出端近くにアタッチメントとして取り付けられている。すなわち、図１５は表裏選別機構１４１の平面図であり、図１６は図１５における［１６］−［１６］線方向の断面図である。図１５を参照して、表裏選別機構１４１の移送路１４４にはキャップ状の部品Ｐに応じた寸法の舌部１４３が切込み溝１４２によって所定のピッチで複数個形成されている。また、図１６を参照して、移送路１４４はアングル状に折り曲げた部材１４５をボウル１２１の外周壁１２３にボルト１４６で取り付けて形成されており、外周壁１２３に向かって若干下向き傾斜とされている。
【０００６】
図１５において、移送路１４４の幅Ｒは部品Ｐの内径ｄと側壁部Ｐｗの厚さｅとの和より僅かに大きく、舌部１４３の幅Ｓは部品Ｐの内径ｄより小さいが、舌部１４３とその両脇の切込み溝１４２との幅Ｔは部品Ｐの外径Ｄより大とされている。そして、切込み溝１４２の幅は部品Ｐの側壁部Ｐｗの厚さｅよりも大きい。
【０００７】
そして移送されてくるキャップ状の部品Ｐのうち、開口側を上にしている部品Ｐは舌部１４３間の切込み溝１４２に嵌まることなく表裏選別機構１４１をそのまま通過するが、開口側を下にしている部品Ｐはその側壁部Ｐｗが切込み溝１４２に嵌まり込むので、部品Ｐのボウル２１の中心部に近い側から下方へ傾いて舌部１４３にかぶさり、次いで舌部１４３から抜けて下方へ落下することにより選別される。そのほか、本願出願人の出願による特公平２−１００４３号公報にもキャップ状部品についての整送装置が示されている。
【０００８】
【発明が解決しようとする課題】
上記の表裏選別機構１３１や特公平２−１００４３号公報の整送装置はあくまでキャップ状の部品Ｐの表裏選別のためのものであり、図１に示したような、浅い角皿状の部品Ｑの表裏選別には向いていない。また、キャップ状の部品Ｐの表裏選別を行うに際しても、図１５、図１６に示したような表裏選別機構１４１は部品Ｐの移送速度が大になると選別作用は円滑に行なわれず、部品Ｐが舌部１４３に引っ掛かったまま落下しないことが多くなる。すなわち、部品Ｐが舌部１４３から抜け落ちる早さよりも部品Ｐの移送速度の方が大になって、抜け落ちるべき部品Ｐを後続する部品Ｐが移送方向へ押圧するようになる。ボウル２１は振動しているので、暫くして部品Ｐの引っ掛かりが解消されることはあっても、それだけ選別効率は低下することになる。
【０００９】
本発明は上述の問題に鑑みてなされ、浅い角皿状の部品Ｑについて、その表裏を効率よく選別することができる振動パーツフィーダの表裏選別機構を提供することを課題とする。
【００１０】
【課題を解決するための手段】
以上の課題は、上記の請求項１によって解決されるが、その解決手段を実施の形態によって例示すれば、図８は本発明の要部である第１表裏選別機構４１の平面図、図７は図８に対応する縦断面図である。選別トラック３１の内周側からほぼ同様な形状の切込み溝４２ａ、４２ｂを入れて、それらの間に舌状部４３が形成されている。長さ方向を移送方向に向けて移送されてくる部品Ｑのうち、側壁部Ｑｗを上にした表向きの部品Ｑは切込み溝４２ａ、４２ｂに関係なくそのまま通過するが、側壁部Ｑｗを下にした裏向きの部品Ｑは側壁部Ｑｗの移送の前後なっている部分が切込み溝４２ａ、４２ｂに嵌まり込んで内周側へ傾き舌状部４３へかぶさる。舌状部４３の先端部にはボウル２１内へ向けて径方向に、かつやや上向き、すなわち、選別トラック３１の内周端を含む径の方向へ、常時空気を噴出させる空気噴出孔４５が形成されており、部品Ｑの側壁部Ｑｗ内へ噴出される空気によって、裏向きの部品Ｑは舌状部４３から脱落されボウル２１内ヘ落下して選別される。
【００１１】
上記において、切込み溝４２ａは上流側切込み縁ｐ₁ を径方向の直線状とし、切込み先端の溝幅縁ｑ₁ を部品Ｑの側壁部Ｑｗの厚さＥより僅か大として、溝幅が内周側ほど広がるように、溝幅縁ｑ₁ の下流端からテーパー状に下流側へ傾斜させて舌状部４３の内周縁ｔに至る下流側切込み縁ｒ₁ から形成されている。また、切込み溝４２ｂは舌状部４３の内周縁ｔから径方向への上流側切込み縁ｐ₂ 、切込み先端の溝幅縁ｑ₂ 、溝幅縁ｑ₂ の下流端から下流側へ傾斜させて選別トラック３１の内周縁に至る下流側切込み縁ｒ₂ によって形成されている。更には、舌状部４３の基部の長さＳは部品Ｑの内法長さｌより僅かに小さく、舌状部４３の内周縁から周壁３３までの幅ｕは部品Ｑの内法幅ｗと周壁部Ｑｗの厚さＥとの和よりは小さい。従って、裏向きの部品Ｑの側壁部Ｑｗは切込み溝４２ａ、４２ｂを飛び越えることなく確実に落下し、また部品Ｑが舌状部４３にかぶさった後、噴出空気によって舌状部４３から脱落されるに際しても、捩り振動による移送力が切込み溝４２ａ、４２ｂの下流側の切込み縁ｒ₁ 、ｒ₂ に沿って移動する部品Ｑの脱落を助けるので、その脱落は極めて円滑に進み、部品Ｑの表裏の選別効率が高く維持される。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態による振動パーツフィーダの部品の表裏選別機構について、図面を参照して、具体的に説明する。
【００１３】
図２は振動パーツフィーダのボウル２１において、中心角で９５度部分を占める選別トラック３１の平面図であり、図１に示した部品Ｑは矢印ｍで示す方向へ移送される。そして、詳細は後述するが、ボウル２１の周縁部に固定された円弧状のトラックブロック３０に部品Ｑの移送路としての選別トラック３１が形成されている。
【００１４】
選別トラック３１を上流側から説明するに、図３は図２における［３］−［３］線方向の断面図である。選別トラック３１とその周壁３３を形成したトラックブロック３０がボルト３０ｂによってボウル２１の周縁部にボルト３０ｂで固定されている。選別トラック３１はボウル２１の中心から径外方に向かって角度１５度の下向き傾斜とされ、選別トラック３１と周壁３３との間の角度は、後述の図も参照して、基本的には一点鎖線で示すように９０度とされているが、図２に示すように、トラックブロック３０の周壁部分の上流端部が削られて三角形の斜面３２が形成されており、図３の断面においては、選別トラック３１と周壁３３との間の角度は１２０度となっている。ちなみに、図３における一点鎖線は削り部分が無くなった箇所における周壁３３を示す。上記の斜面３２はトラックブロック３０の周壁部分の上流端面が図示しない上流側から移送されてくる部品Ｑの障害とならないように削られた部分であり、一部の部品Ｑは斜面３２を経て選別トラック３１の部品Ｑに合流される。そして、部品Ｑは選別トラック３１の傾斜および駆動部から受ける捩り振動の遠心力成分によって、選別トラック３１上を周壁３３に接して移送される。
【００１５】
図４は図２における［４］−［４］線方向の断面図である。選別トラック３１の内周側を切り落とし幅を狭めて滑落面３４Ａが形成されており、過剰気味に移送されてくる部品Ｑを滑落面３４Ａからボウル２１の内部へ滑落させて移送量の調整が行われる。
【００１６】
図５は図２における［５］−［５］線方向の断面図である。図２に示すように、トラックブロック３０の周壁部分には、細幅のスリット３５が径方向と角度５５度の傾斜で形成されており、図５に示すように、スリット３５の底面３５Ｂは周壁３３面において選別トラック３１の面よりも高さｆ＝０．５ｍｍだけ高いレベルとされている。従って、例えば２層に重なって移送されてくる部品Ｑのうち、下層の部品Ｑは周壁３３に接して移送されるに対して、上層の部品Ｑは周壁３３に接して移送されている先頭の角部がスリット３５に至ると、スリット３５内へ入り込み、スリット３５の下流側のトラックブロック３０のスリット面と衝突することにより重なりが崩されるようになっている。
【００１７】
図６は図２における［６］−［６］線方向の断面図である。図２に示すように、選別トラック３１の幅が更に狭められ、部品Ｑの幅Ｗの１／２よりは大で長さＬの１／２よりは小とされて、部品の移送の向き選別領域となっている。それに伴って、図４に示した滑落面３４Ａの幅が拡大されて滑落面３４Ｂが形成されている。すなわち、長さ方向を移送方向に向けた部品Ｑはそのまま通過するが、長さ方向を移送方向と直交させている部品Ｑは重心が選別トラック３１から外れることにより滑落面３４Ｂを経てボウル２１の内部へ落下し排除される。従って、この部品Ｑの移送の向き選別領域より下流側の選別トラック３１では、長さ方向を移送方向に向けた部品Ｑが移送される。
【００１８】
図７は図２における［７］−［７］線方向の断面図、図８は図７に対応する部分の平面図であり、本発明の要部である第１表裏選別機構４１を示す。図８を参照して、選別トラック３１に内周側からほぼ同様な形状の切込み溝４２ａ、４２ｂを入れて、それらの間に舌状部４３が形成されている。長さ方向を移送方向に向け、側壁部Ｑｗを上にして移送されてくる表向きの部品Ｑは切込み溝４２ａ、４２ｂに関係なくそのまま通過するが、長さ方向を移送方向に向け、側壁部Ｑｗを下にして移送されてくる裏向きの部品Ｑは側壁部Ｑｗの移送の前後となっている部分が切込み溝４２ａ、４２ｂに嵌まり込んで内周側へ傾き舌状部４３へかぶさる。舌状部４３にかぶさった裏向きの部品Ｑを舌状部４３から脱落させるために、舌状部４３の内周側の先端部の切欠き４４に空気噴出孔４５が開口されており空気が常時噴出されている。
【００１９】
この第１の表裏選別機構４１を詳しく説明するに、図８を参照して、切込み溝４２ａの外形は、選別トラック３１の実幅５．２ｍｍの内周縁から径方向の実長さ４．２ｍｍの上流側切込み縁ｐ₁ 、上流側切込み縁ｐ₁ の先端から下流側への長さ１．１ｍｍの溝幅縁ｑ₁ 、溝幅縁ｑ₁ の下流端から径方向とは１５度の角度で下流側へ傾斜し舌状部４３の内周縁ｔに至る長さ２．９ｍｍの下流側切込み縁ｒ₁ からなり、溝幅縁ｑ₁ と周壁３３との間には幅１ｍｍが残されている。また、切込み溝４２ｂの外形は、舌状部４３の内周縁ｔから径方向への長さ２．８ｍｍの上流側切込み縁ｐ₂ 、切込み先端の長さ１．１ｍｍの溝幅縁ｑ₂ 、溝幅縁ｑ₂ の下流端から径方向とは１５度の角度で下流側へ傾斜し選別トラック３１の内周縁に至る長さ４．４ｍｍの下流側切込み縁ｒ₂ から形成されている。更には、舌状部４３の内周縁ｔから周壁３３までの幅ｕは３．８ｍｍ、切込み溝４２ａの溝幅縁ｑ₁ の下流端から切込み溝４２ｂの溝幅縁ｑ₂ の上流端までの舌状部４３の基部の長さｓは５ｍｍ、舌状部４３の内周縁の長さｔは４．３ｍｍとされている。すなわち、舌状部４３の基部の長さｓは部品Ｑの内法長さｌよりは小さく、舌状部４３の内周縁ｔから周壁３３間での幅ｕは部品Ｑの内法幅ｗと側壁部Ｑｗの幅Ｅとの和よりは小さい。また、切込み溝４２ａ、４２ｂの溝幅縁ｑ₁ 、ｑ₂ の長さは部品Ｑの側壁部Ｑｗの幅Ｅよりは僅かに大きい。
【００２０】
また図７を参照して、トラックブロック３０の内部に形成された圧縮空気の通路４８に外周側から圧縮空気配管４９の先端部が挿入螺着されており、圧縮空気が連通する通路４７を経由して、舌状部４３の先端部の切欠き４４内に開口されている空気噴出孔４５からボウル２１の内部へ向けて径方向に、かつやや上向きに空気が噴出されるようになっている。
【００２１】
図９は図２における［９］−［９］線方向の断面図であり、上流側の第１表裏選別機構４１で排除される部品Ｑのボウル２１内への落下を妨げないように図４に示した滑落面３４Ａが欠落されている。また、図１０は図２における［１０］−［１０］線方向の断面図であり、図９に示した選別トラック３１が滑落面３４Ｃによって幅を狭められ、図６に示したと同様に、長さ方向を移送方向に向けた部品Ｑのみが通過し得る幅とされている。
【００２２】
図２における［７’］−［７’］線方向の断面図は図７の断面図と全く同様なであり、第２表裏選別機構４１’の断面である。ここにおいて、上流側の第１表裏選別装置４１で排除されずに残った裏向きの部品Ｑの選別排除が行なわれる。
【００２３】
図１１は図２における［１１］−［１１］線方向の断面図である。図２において網掛け部分は詳細な図示を省略した部分であり、図１１に示すような部品Ｑの移送の向き選別機構５１が設けられている。すなわち、トラックブロック３０に天井部材５２を載せ、その上へ取付け部材５３を重ねて、ボルト５３ｂで固定している。取付け部材５３の内周側には上方から空気噴出ノズル５５がその取付け部品５４と共に挿入螺着されており、空気を常時下方へ噴出させている。図２も参照して、長さ方向を移送方向に向けた部品Ｑが滑落面３４Ｄによって幅の狭められた選別トラック３１を移送されることにより、長さ方向を移送方向と直交させている部品Ｑは選別トラック３１から内周側へはみ出して移送されるが、そのはみ出し部分に上記の空気噴出ノズル５３から空気が噴出されるので、長さ方向を移送方向と直交させている部品Ｑは滑落面３４Ｄを経由してボウル２１内へ落下するようになっている。なお、図１１において一点鎖線は部品Ｑの移送の向き選別機構５１の下流側における天井部材５２の輪郭であり、選別トラック３１との間の間隔を狭めて、長さ方向を移送方向に向けた表向きの部品Ｑが姿勢を変えることなく移送されるようになっている。
【００２４】
本実施の形態の振動パーツフィーダの部品の表裏選別機構は以上のように構成されるが、次にその作用を説明する。
【００２５】
振動パーツフィーダのボウル２１の底面から過剰気味に移送されてくる部品Ｑは、図２を参照して、長さ方向の向きは不定で、部分的に重なり合い過剰気味に、かつ表向きの部品Ｑと裏向きの部品Ｑとが混在した状態で選別トラック３１へ送り込まれる。部品Ｑは周壁３３に接して移送されるが、過剰気味の部品Ｑは図４に示す幅が狭められた選別トラック３１において滑落面３４Ａを経由してボウル２１内へ落下し、移送量の調整が行なわれる。
【００２６】
次いで部品Ｑは図２のスリット３５に至り、重なっている部品Ｑが崩される。すなわち、図５に示すように、スリット３５の底面３５Ｂが選別トラック３１の面から０．５ｍｍの高さにあり、部品Ｑの全高Ｈは１ｍｍであるから、部品Ｑが２層に重なっている場合、下層の部品Ｑは周壁３３に接して移送されるに対して、上層の部品Ｑは周壁３３に接して移送されてきた先頭の角部がスリット３５に入り込み、スリット３５の下流側のトラックブロック３０のスリット面に衝突することにより、下層の部品Ｑと上層の部品Ｑとが分離され重なりが崩される。部品Ｑが多層に重なっている場合であっても、下から１層目の部品Ｑと２層目の部品Ｑとが分離される時の衝撃によって３層目、４層目等の上層の部品Ｑも崩される。
【００２７】
続いて部品Ｑは図６に示す幅が更に狭められた部品の移送の向き選別領域の選別トラック３１に至り、長さ方向を移送方向に向けている部品Ｑはそのまま移送されるが、長さ方向を移送方向と直交させている部品Ｑは重心が選別トラック３１から外れることから、滑落面３４Ｂを経てボウル２１内へ排除される。この時点において、部品Ｑは表向きのものと裏向きのものとが混在している。
【００２８】
そして、長さ方向を移送方向に向けた部品Ｑが図７、図８に示した第１表裏選別機構４１に至る。側壁部Ｑｗを上にして移送されてくる表向きの部品Ｑは切込み溝４２ａ、４２ｂの上をそのまま通過するが、側壁部Ｑｗを下にして移送されてくる裏向きの部品Ｑは、移送の前後となっている側壁部Ｑｗ、すなわち、側壁部Ｑｗの先頭側と後尾側とが切込み溝４２ａ、４２ｂに嵌まり込む。図１２はその作用を経時に示す断面図である。裏向きの部品Ｑは上流側の選別トラック３１を図１２のＡに示すように周壁３３に接して移送されてくるが、図８に示した位置において一点鎖線で示すように、また、図１２のＢに示すように、部品Ｑは前後の側壁部Ｑｗが切込み溝４２ａ、４２ｂに嵌まり込んで内周側へ傾き、舌状部４３にかぶさる。舌状部４３の内周側の先端部の切欠き４４に開口している空気噴出孔４５からは常時空気が噴出されており、裏向きの部品Ｑの側壁部Ｑｗの内側へ空気が吹き付けられることから、図１２のＣに示すように、裏向きの部品Ｑは舌状部４３から脱落し吹き飛ばされてボウル２１内へ排除される。この時において、切込み溝４２ａ、４２ｂの下流側切込み縁ｒ₁ 、ｒ₂ が下流側へ傾斜されているので、部品Ｑは捩り振動の移送力も付加され、下流側切込み線ｒ₁ 、ｒ₂ に沿って移動し舌状部４３から脱落する。
【００２９】
第１表裏選別機構４１を通過した部品Ｑは図９に示す選別トラック３１を経て、図１０に示す幅の狭められた選別トラック３１に至り、図６の部品の移送の向き選別領域で選別に洩れて移送されてきた長さ方向を移送方向と直交させている部品Ｑが重心を外すことにより滑落面３４Ｃを経てボウル２１内へ排除された後、図２における第２表裏選別機構４１’に至り、第１表裏選別機構４１における選別排除に洩れた裏向きの部品Ｑが選別排除される。従って、第２表裏選別機構４１’より下流側においては表向きの部品Ｑのみが移送される。
【００３０】
そして、表向きで長さ方向を移送方向に向けた部品Ｑが図１１に示す移送の向き選別機構５１に至り、長さ方向を移送方向と直交させている部品Ｑの最終的な選別が行なわれる。すなわち、長さ方向を移送方向に向けた部品Ｑは幅を狭められた選別トラック３１上をそのまま移送されるに対して、長さ方向を移送方向と直交させている部品Ｑは選別トラック３１からはみ出した部分に上方の空気噴出ノズル５５から空気が吹きつけられて強制的に排除される。そして、向き選別機構５１を通過した表向きで長さ方向を移送方向に向けた部品Ｑは天井面を下げて狭められた天井部材５２と選別トラック３１との間を移送され、姿勢を保持されて次工程へ供給される。
【００３１】
本実施の形態の振動パーツフィーダの部品の表裏選別機構は以上の様に構成され作用するが、勿論、本発明はこれに限られることなく、本発明の技術的思想に基づいて種々の変形が可能である。
【００３２】
例えば本実施の形態においては、第１表裏選別機構４１（第２表裏選別機構４１’においても同様）の空気噴出孔４５からの空気をボウル２１の径方向へ噴出させたが、やや下流側へ向けて噴出させ、舌状部４３からの部品Ｑの脱落に捩り振動の移送力を効率よく利用するようにしてもよい。
【００３３】
また本実施の形態においては、切込み溝４２ａ、４２ｂの下流側切込み縁ｒ₁ 、ｒ₂ の傾斜角度を１５度としたが、この傾斜角度は部品の形状によって異なり一概には規定されず、部品の形状に応じて最も適切な傾斜角度が選別される。
【００３４】
また本実施の形態においては、切込み溝４２ａ、４２ｂを下流側切込み縁ｒ₁ 、ｒ₂ のみ下流側へ傾斜させた形状としたが、上流側切込み縁ｐ₁ 、ｐ₂ も同時に上流側へ傾斜させた形状とすることもできる。
【００３５】
また本実施の形態においては、長方形状の浅い角皿状の部品Ｑについて、移送の向きを選別した後に、本発明の表裏選別機構が適用して表裏を選別する場合を例示したが、本発明の表裏選別機構は正方形状の浅い角皿状の部品についての表裏選別にも同様に適用される。
【００３６】
【発明の効果】
本発明の振動パーツフィーダの部品の表裏選別機構は上述のような形態で実施され、以下に述べるような効果を奏する。
【００３７】
すなわち、本発明の振動パーツフィーダの部品の表裏選別機構は、選別トラックに、裏向きとなっている浅い角皿状の部品の側壁部の移送の前後の部分が嵌まり込む２本の切込み溝を入れて舌状部を形成し、舌状部の先端部に開口する空気噴出孔を設けて、切込み溝に嵌まり込み円周側へ傾斜して舌状部にかぶさる裏向きの部品を噴出空気によって脱落させるようにしていること、更には切込み溝の下流側切込み縁を下流側へ傾斜させて部品の脱落に捩り振動の移送力を利用し得るようにしていることにより、表向きの部品と裏向きの部品との選別を極めて効率よく行なうことができる。
【図面の簡単な説明】
【図１】選別対象の部品を示す図であり、Ａは平面図、ＢはＡにおける［Ｂ］−［Ｂ］線方向の断面図、ＣはＡにおける［Ｂ］−［Ｂ］線方向の断面図である。
【図２】振動パーツフィーダのボウルの部分平面図である。
【図３】図２における［３］−［３］線方向の断面図である。
【図４】図２における［４］−［４］線方向の断面図である。
【図５】図２における［５］−［５］線方向の断面図である。
【図６】図２における［６］−［６］線方向の断面図である。
【図７】図２における［７］−［７］線方向の断面図である。
【図８】図７に示される部分の平面図である。
【図９】図２における［９］−［９］線方向の断面図である。
【図１０】図２における［１０］−［１０］線方向の断面図である。
【図１１】図２における［１１］−［１１］線方向の断面図である。
【図１２】表裏選別機構の作用を説明する図である。
【図１３】従来例における選別対象の部品の斜視図である。
【図１４】一般的な振動パーツフィーダの部分破断側面図である。
【図１５】従来例における表裏選別機構の平面図である。
【図１６】図１５における［１６］−［１６］線方向の断面図である。
【符号の説明】
３１選別トラック
４１第１表裏選別機構
４１’ 第２表裏選別機構
４２ａ切込み溝
４２ｂ切込み溝
４３舌状部
４４切欠き
４５空気噴出孔
５１向き選別機構[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a front / back sorting mechanism for parts of a vibration part feeder, and more particularly, to a front / back sorting mechanism for a shallow square plate-like part attached to a vibration part feeder.
[0002]
[Prior art]
FIG. 1 is a diagram showing a shallow square dish-shaped part Q that is required to be sorted and supplied to the next process by a vibrating parts feeder. FIG. 1A is a plan view, and FIG. 1 is a cross-sectional view in the [B]-[B] line direction in A, and FIG. 1C is a cross-sectional view in the [C]-[C] line direction in A of FIG. The entire part Q is made of flint glass or ceramics excellent in high temperature formability and electrical insulation, and the size is, for example, a long side L of 7 mm, a short side W of 5 mm, an overall height H of 1 mm, and a side wall portion. The thickness E of Qw is 0.9 mm, and the height F is 0.25 mm. Therefore, the inner length l of the part Q is 5.2 mm, and the inner width w is 3.2 mm. The part Q is used together with a crystal resonator.
[0003]
As shown in FIG. 1C, there is a request to transfer the above-mentioned component Q in the direction of the long side L with the side wall portion Qw facing up and supply it to the next process. At present, no vibration parts feeder has been developed so that the front and back of the shaped part Q can be arranged and transported and supplied.
[0004]
As a relatively similar part, as shown in the perspective view of FIG. 13, a vibration having a front and back sorting mechanism for supplying only the part P with the opening side up to the next process with respect to the cylindrical cap-shaped part P. The parts feeder already exists. As shown in FIG. 14 which is a partially cutaway side view of such a vibration parts feeder 1, the vibration part feeder 1 includes a bowl 121 that accommodates and transports a component P and a drive unit 111 that applies torsional vibration thereto. In 111, a movable block 112 fixed integrally with the bottom plate of the bowl 121 is connected to a lower fixed block 114 by inclined leaf springs 113 arranged at equal angular intervals, and a coil 115 is placed on the fixed block 114. The wound electromagnet 116 is fixed so as to face the movable core 112C on the lower surface of the movable block 112 with a slight gap. The periphery of the drive unit 111 is covered with a soundproof cover 117, and is installed on the base via a vibration isolation rubber 118.
[0005]
In the bowl 121, a track 124 that rises in a spiral shape from the bottom surface along the peripheral wall 123 is formed, and serves as a transfer path for the component P. A front / back sorting mechanism 141 as shown in FIGS. 15 and 16 is provided near the discharge end of the truck 124 in order to supply only the part P with the opening side up to the next process from among the cap-shaped parts P to be accommodated. It is attached as an attachment. That is, FIG. 15 is a plan view of the front / back sorting mechanism 141, and FIG. 16 is a cross-sectional view in the [16]-[16] line direction in FIG. Referring to FIG. 15, a plurality of tongue portions 143 having dimensions corresponding to cap-shaped parts P are formed at a predetermined pitch in the transfer path 144 of the front / back sorting mechanism 141 by cut grooves 142. Referring to FIG. 16, the transfer path 144 is formed by attaching a member 145 bent in an angle shape to the outer peripheral wall 123 of the bowl 121 with a bolt 146, and is inclined slightly downward toward the outer peripheral wall 123. Yes.
[0006]
In FIG. 15, the width R of the transfer path 144 is slightly larger than the sum of the inner diameter d of the component P and the thickness e of the side wall Pw, and the width S of the tongue 143 is smaller than the inner diameter d of the component P. The width T between 143 and the cut grooves 142 on both sides thereof is larger than the outer diameter D of the component P. The width of the cut groove 142 is larger than the thickness e of the side wall portion Pw of the component P.
[0007]
Of the cap-shaped parts P that are transferred, the part P with the opening side facing up passes through the front / back sorting mechanism 141 without being fitted into the notch groove 142 between the tongues 143, but the opening side is lowered. Since the side wall portion Pw of the component P is fitted in the cut groove 142, the component P is inclined downward from the side near the center of the bowl 21 and covers the tongue portion 143, and then comes out of the tongue portion 143 and moves downward. Sorted by falling into In addition, Japanese Patent Publication No. 2-10043, filed by the applicant of the present application, also shows a sheet feeding device for a cap-shaped part.
[0008]
[Problems to be solved by the invention]
The front / back sorting mechanism 131 and the sheet feeding device disclosed in Japanese Examined Patent Publication No. 2-10043 are only for the front / back sorting of the cap-shaped part P, and are as shown in FIG. It is not suitable for the front and back sorting of. Also, when performing the front / back sorting of the cap-shaped part P, the front / back sorting mechanism 141 as shown in FIGS. 15 and 16 does not perform the sorting action smoothly when the transfer speed of the part P is increased. Often, the tongue 143 does not fall while being caught. That is, the transfer speed of the component P becomes larger than the speed at which the component P falls off the tongue 143, and the subsequent component P presses the component P to be removed in the transfer direction. Since the bowl 21 vibrates, even if the catch of the part P is eliminated after a while, the sorting efficiency is lowered accordingly.
[0009]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a front and back sorting mechanism for a vibrating parts feeder that can efficiently sort the front and back of a shallow square dish-shaped part Q.
[0010]
[Means for Solving the Problems]
The above problem is solved by the above-mentioned claim 1. If the solving means is exemplified by the embodiment, FIG. 8 is a plan view of the first front / back sorting mechanism 41, which is the main part of the present invention, and FIG. 7. FIG. 9 is a longitudinal sectional view corresponding to FIG. 8. Cut grooves 42a and 42b having substantially the same shape are inserted from the inner peripheral side of the sorting track 31, and a tongue-like portion 43 is formed between them. Of the parts Q that are transported with the length direction in the transport direction, the front-facing part Q with the side wall portion Qw facing up passes through as it is regardless of the cut grooves 42a and 42b, but the side wall portion Qw is lowered. In the part Q facing down, the portion of the side wall portion Qw that is moved forward and backward is fitted into the cut grooves 42a and 42b, and is inclined toward the inner peripheral side and covers the tongue portion 43. Radially toward the bowl 21 to the tip of the tongue 43, and slightly upward, i.e., the inner peripheral end direction of the diameter including the sorting track 31, the air ejection holes 45 for ejecting air at all times Due to the air that is formed and blown into the side wall portion Qw of the component Q, the component Q facing downward is dropped from the tongue-shaped portion 43 and falls into the bowl 21 to be sorted.
[0011]
In the above, notches 42a is the upstream cut edges p ₁ and radial straight, a groove width edge q ₁ incision tip as a slightly large than the thickness E of the sidewall portion Qw parts Q, groove width inner peripheral It is formed from a downstream cut edge r _{1 that} tapers from the downstream end of the groove width edge q ₁ to the downstream side and reaches the inner peripheral edge t of the tongue-like portion 43 so as to expand toward the side. Further, the upstream cut edges p ₂ of the cut groove 42b from the inner peripheral edge t of the tongues 43 in the radial direction, the groove width edges q ₂ cuts the tip, is inclined to the downstream side from the downstream end of Mizohabaen q ₂ It is formed by a downstream cut edge r ₂ that reaches the inner periphery of the sorting track 31. Furthermore, the length S of the base of the tongue 43 is slightly smaller than the internal length l of the part Q, and the width u from the inner peripheral edge of the tongue 43 to the peripheral wall 33 is the internal width w of the part Q. It is smaller than the sum with the thickness E of the peripheral wall Qw. Therefore, the side wall portion Qw of the part Q facing downward surely falls without jumping over the cut grooves 42a and 42b, and after the part Q covers the tongue part 43, it is dropped from the tongue part 43 by the blown air. At this time, the transfer force due to the torsional vibration helps the part Q moving along the cutting edges r ₁ and r ₂ on the downstream side of the cutting grooves 42a and 42b, so that the dropping proceeds very smoothly. High sorting efficiency is maintained.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a front and back sorting mechanism for parts of a vibration parts feeder according to an embodiment of the present invention will be specifically described with reference to the drawings.
[0013]
FIG. 2 is a plan view of the sorting track 31 occupying a 95 degree portion at the central angle in the bowl 21 of the vibration parts feeder. The part Q shown in FIG. 1 is transferred in the direction indicated by the arrow m. As will be described in detail later, a sorting track 31 as a transfer path for the component Q is formed on an arc-shaped track block 30 fixed to the peripheral edge of the bowl 21.
[0014]
The sorting truck 31 will be described from the upstream side. FIG. 3 is a cross-sectional view taken along line [3]-[3] in FIG. The track block 30 forming the sorting track 31 and the peripheral wall 33 is fixed to the peripheral edge of the bowl 21 by bolts 30b. The sorting track 31 is inclined downward at an angle of 15 degrees from the center of the bowl 21 to the outside of the diameter, and the angle between the sorting track 31 and the peripheral wall 33 is basically one point with reference to the drawings described later. As shown by the chain line, it is 90 degrees, but as shown in FIG. 2, the upstream end of the peripheral wall portion of the track block 30 is cut to form a triangular slope 32, and in the cross section of FIG. The angle between the sorting track 31 and the peripheral wall 33 is 120 degrees. Incidentally, the alternate long and short dash line in FIG. 3 indicates the peripheral wall 33 at the location where the shaved portion is eliminated. The slope 32 is a portion where the upstream end surface of the peripheral wall portion of the track block 30 is cut so as not to obstruct the parts Q transferred from the upstream side (not shown), and some of the parts Q are sorted through the slopes 32. It is joined to the part Q of the truck 31. Then, the part Q is transferred on the sorting track 31 in contact with the peripheral wall 33 by the inclination of the sorting track 31 and the centrifugal force component of the torsional vibration received from the drive unit.
[0015]
4 is a cross-sectional view taken along line [4]-[4] in FIG. A sliding surface 34A is formed by cutting off the inner circumferential side of the sorting truck 31 and narrowing the width. The parts Q that are transported excessively are slid from the sliding surface 34A to the inside of the bowl 21 to adjust the transfer amount. Is called.
[0016]
5 is a cross-sectional view taken along the line [5]-[5] in FIG. As shown in FIG. 2, a narrow slit 35 is formed in the circumferential wall portion of the track block 30 at an angle of 55 degrees with respect to the radial direction. As shown in FIG. 5, the bottom surface 35 </ b> B of the slit 35 is a circumferential wall. The height 33 is higher than the surface of the sorting track 31 by a height f = 0.5 mm. Therefore, for example, among the parts Q transferred in two layers, the lower part Q is transferred in contact with the peripheral wall 33, whereas the upper part Q is transferred in contact with the peripheral wall 33. When the corner reaches the slit 35, it enters the slit 35 and collides with the slit surface of the track block 30 on the downstream side of the slit 35 so that the overlap is broken.
[0017]
6 is a cross-sectional view taken along line [6]-[6] in FIG. As shown in FIG. 2, the width of the sorting track 31 is further narrowed to be larger than ½ of the width W of the part Q and smaller than ½ of the length L, so that the direction of sorting of the parts is sorted. It is an area. Along with this, the width of the sliding surface 34A shown in FIG. 4 is enlarged to form the sliding surface 34B. That is, the part Q whose length direction is directed to the transfer direction passes through as it is, but the part Q whose length direction is orthogonal to the transfer direction passes through the sliding surface 34B due to the center of gravity deviating from the sorting track 31. Dropped inside and eliminated. Accordingly, in the sorting truck 31 on the downstream side of the sorting direction of the transfer direction of the part Q, the part Q whose length direction is in the transfer direction is transferred.
[0018]
7 is a cross-sectional view taken along the line [7]-[7] in FIG. 2, and FIG. 8 is a plan view of a portion corresponding to FIG. 7, showing the first front / back sorting mechanism 41 that is the main part of the present invention. Referring to FIG. 8, cut grooves 42a and 42b having substantially the same shape are inserted into the sorting track 31 from the inner peripheral side, and a tongue-like portion 43 is formed between them. The front-facing part Q which is transferred with the length direction in the transfer direction and the side wall portion Qw facing up passes through the same as it is regardless of the cut grooves 42a and 42b. The part Q which is face-down transferred with the side facing downward is fitted into the cut grooves 42a and 42b so as to incline toward the inner peripheral side and cover the tongue 43. In order to drop off the part Q facing the tongue 43 from the tongue 43, an air ejection hole 45 is opened in a notch 44 on the inner peripheral side of the tongue 43 so that the air It is constantly ejected.
[0019]
The first front / back sorting mechanism 41 will be described in detail. Referring to FIG. 8, the outer shape of the cut groove 42a is 4.2 mm from the inner periphery of the sorting track 31 having an actual width of 5.2 mm. upstream cut edges p _1, from the tip of the upstream cut edges p ₁ length 1.1 mm groove width edge q ₁ of the downstream, of 15 degrees to the radial direction from the downstream end of Mizohabaen q ₁ It consists of a downstream cut edge r ₁ having a length of 2.9 mm that is inclined downstream at an angle and reaches the inner peripheral edge t of the tongue 43, and a width of 1 mm is left between the groove width edge q ₁ and the peripheral wall 33. ing. Further, the outer shape of the cut groove 42b includes an upstream cut edge p _{2 having} a length of 2.8 mm in the radial direction from the inner peripheral edge t of the tongue-shaped portion 43, a groove width edge q _{2 having} a length of the cut tip of 1.1 mm, The groove width edge q ₂ is formed from a downstream cutting edge r ₂ having a length of 4.4 mm which is inclined to the downstream side at an angle of 15 degrees from the downstream end of the groove width edge q ₂ and reaches the inner peripheral edge of the sorting track 31. Further, the width u from the inner peripheral edge t of the tongue 43 to the peripheral wall 33 is 3.8 mm, and the distance from the downstream end of the groove width edge q ₁ of the cut groove 42a to the upstream end of the groove width edge q ₂ of the cut groove 42b. The length s of the base of the tongue-like portion 43 is 5 mm, and the length t of the inner peripheral edge of the tongue-like portion 43 is 4.3 mm. That is, the length s of the base of the tongue 43 is smaller than the internal length l of the part Q, and the width u between the inner peripheral edge t of the tongue 43 and the peripheral wall 33 is the internal width w of the part Q. It is smaller than the sum of the width E of the side wall portion Qw. Further, the lengths of the groove width edges q ₁ and q ₂ of the cut grooves 42 a and 42 b are slightly larger than the width E of the side wall portion Qw of the component Q.
[0020]
Further, referring to FIG. 7, the end of the compressed air pipe 49 is inserted and screwed into the compressed air passage 48 formed in the inside of the track block 30 from the outer peripheral side, and passes through the passage 47 through which the compressed air communicates. Then, air is ejected in a radial direction and slightly upward from the air ejection hole 45 opened in the notch 44 at the tip of the tongue-shaped portion 43 toward the inside of the bowl 21. .
[0021]
FIG. 9 is a cross-sectional view taken along line [9]-[9] in FIG. 2, so that the part Q removed by the first front / back sorting mechanism 41 on the upstream side is not prevented from falling into the bowl 21. The sliding surface 34A shown in FIG. FIG. 10 is a cross-sectional view in the [10]-[10] line direction in FIG. 2, and the sorting track 31 shown in FIG. 9 is narrowed by the sliding surface 34C, and as shown in FIG. The width is such that only the part Q whose direction is in the transfer direction can pass.
[0022]
The cross-sectional view in the [7 ′]-[7 ′] line direction in FIG. 2 is exactly the same as the cross-sectional view in FIG. 7, and is a cross-section of the second front / back sorting mechanism 41 ′. Here, the rear-facing part Q that has not been removed by the first front / back sorting device 41 on the upstream side is sorted out.
[0023]
11 is a cross-sectional view taken along the line [11]-[11] in FIG. In FIG. 2, the shaded portion is a portion whose detailed illustration is omitted, and is provided with a direction sorting mechanism 51 for transferring the component Q as shown in FIG. That is, the ceiling member 52 is placed on the track block 30, and the mounting member 53 is stacked thereon and fixed with the bolts 53b. On the inner peripheral side of the mounting member 53, an air ejection nozzle 55 is inserted and screwed together with the mounting component 54 from above, and air is constantly ejected downward. Referring also to FIG. 2, the part Q whose length direction is in the transfer direction is transferred to the sorting track 31 whose width is narrowed by the sliding surface 34 </ b> D, so that the length direction is orthogonal to the transfer direction. Q protrudes from the sorting truck 31 to the inner peripheral side and is transported, but air is ejected from the air ejection nozzle 53 to the projecting portion, so that the part Q whose length direction is orthogonal to the transport direction slides down. It falls into the bowl 21 via the surface 34D. In FIG. 11, the alternate long and short dash line is the outline of the ceiling member 52 on the downstream side of the transfer direction selection mechanism 51 of the component Q, and the length direction is directed to the transfer direction by narrowing the distance between the selection track 31. The part Q facing up is transferred without changing the posture.
[0024]
The front / back sorting mechanism for parts of the vibration part feeder of the present embodiment is configured as described above. Next, the operation thereof will be described.
[0025]
Referring to FIG. 2, the part Q transferred from the bottom surface of the bowl 21 of the vibration parts feeder to the excess is indefinite, the direction in the length direction is indefinite, partially overlapped and excessively, and the part Q that is face up. It is sent to the sorting truck 31 in a state where the part Q facing down is mixed. The part Q is transported in contact with the peripheral wall 33, but the excessively-smooth part Q falls into the bowl 21 via the sliding surface 34A in the narrowed sorting truck 31 shown in FIG. Is done.
[0026]
Next, the part Q reaches the slit 35 of FIG. 2, and the overlapping part Q is broken. That is, as shown in FIG. 5, the bottom surface 35B of the slit 35 is at a height of 0.5 mm from the surface of the sorting track 31, and the total height H of the component Q is 1 mm, so the component Q overlaps two layers. In this case, the lower part Q is transported in contact with the peripheral wall 33, whereas the upper part Q is transported in contact with the peripheral wall 33, the leading corner enters the slit 35, and the track on the downstream side of the slit 35. By colliding with the slit surface of the block 30, the lower part Q and the upper part Q are separated and the overlap is broken. Even when the parts Q are stacked in multiple layers, the upper layer parts such as the third layer, the fourth layer, etc. by the impact when the first layer part Q and the second layer part Q are separated from the bottom. Q is also destroyed.
[0027]
Subsequently, the part Q reaches the sorting truck 31 in the sorting direction of the part transport direction in which the width shown in FIG. 6 is further narrowed, and the part Q whose length direction is in the transport direction is transported as it is. Since the center of gravity of the component Q whose direction is orthogonal to the transfer direction is removed from the sorting track 31, it is removed into the bowl 21 through the sliding surface 34B. At this time, the component Q is a mixture of a front side and a back side.
[0028]
Then, the part Q whose length direction is directed to the transfer direction reaches the first front / back sorting mechanism 41 shown in FIGS. The front-facing part Q transferred with the side wall portion Qw up passes through the cut grooves 42a and 42b as it is. The side wall portion Qw, that is, the front side and the rear side of the side wall portion Qw are fitted into the cut grooves 42a and 42b. FIG. 12 is a sectional view showing the operation over time. The part Q facing downward is transferred to the upstream sorting truck 31 in contact with the peripheral wall 33 as shown in FIG. 12A, but as shown by the one-dot chain line at the position shown in FIG. As shown in FIG. 5B, the front and rear side wall portions Qw of the component Q are fitted into the cut grooves 42a and 42b, are inclined toward the inner peripheral side, and are covered with the tongue-shaped portion 43. Air is constantly ejected from an air ejection hole 45 opened in a notch 44 at the tip of the inner peripheral side of the tongue 43, and air is blown to the inside of the side wall portion Qw of the component Q facing downward. For this reason, as shown in FIG. 12C, the part Q facing downward falls off the tongue 43 and is blown away and is removed into the bowl 21. At this time, since the downstream cut edges r ₁ and r ₂ of the cut grooves 42a and 42b are inclined to the downstream side, the component Q is also added with a transfer force of torsional vibration, and is applied to the downstream cut lines r ₁ and r ₂ . It moves along and falls off from the tongue-shaped part 43.
[0029]
The part Q that has passed through the first front / back sorting mechanism 41 passes through the sorting truck 31 shown in FIG. 9 to the narrowed sorting truck 31 shown in FIG. 10, and is sorted in the sorting direction area for transferring parts shown in FIG. After the part Q that has been leaked and transferred in the direction perpendicular to the transfer direction is removed from the bowl 21 through the sliding surface 34C by removing the center of gravity, the second front and back sorting mechanism 41 'in FIG. As a result, the back-facing part Q that has leaked out in the first front / back sorting mechanism 41 is sorted out. Accordingly, only the front-facing part Q is transferred downstream from the second front / back sorting mechanism 41 ′.
[0030]
Then, the part Q having the front direction and the length direction directed to the transfer direction reaches the transfer direction selection mechanism 51 shown in FIG. 11, and final selection of the part Q having the length direction orthogonal to the transfer direction is performed. . That is, the part Q whose length direction is directed to the transport direction is transported as it is on the narrowed sorting truck 31, while the part Q whose length direction is perpendicular to the transport direction is removed from the sorting truck 31. Air is blown from the upper air jet nozzle 55 to the protruding portion and is forcibly excluded. Then, the part Q that has passed through the direction selection mechanism 51 and has the length direction in the transfer direction is transferred between the ceiling member 52 narrowed by lowering the ceiling surface and the selection track 31, and the posture is maintained. It is supplied to the next process.
[0031]
The front and back sorting mechanism of the parts of the vibration part feeder of the present embodiment is configured and operates as described above. Of course, the present invention is not limited to this, and various modifications can be made based on the technical idea of the present invention. Is possible.
[0032]
For example, in the present embodiment, the air from the air ejection holes 45 of the first front / back sorting mechanism 41 (same in the second front / back sorting mechanism 41 ′) is jetted in the radial direction of the bowl 21, but slightly downstream. The torsional vibration transfer force may be efficiently used to drop the component Q from the tongue 43.
[0033]
Further, in the present embodiment, the inclination angle of the downstream cut edges r ₁ and r ₂ of the cut grooves 42a and 42b is set to 15 degrees. However, this inclination angle differs depending on the shape of the part and is not generally defined. The most appropriate inclination angle is selected according to the shape of the.
[0034]
Further, in the present embodiment, the cut grooves 42a and 42b have a shape in which only the downstream cut edges r ₁ and r ₂ are inclined to the downstream side, but the upstream cut edges p ₁ and p ₂ are also inclined to the upstream side at the same time. It can also be made into the shape made.
[0035]
Further, in the present embodiment, the case where the front and back sorting mechanism of the present invention is applied to sort the front and back after the sorting direction of the rectangular shallow square dish-shaped part Q is exemplified. The front / back sorting mechanism is similarly applied to the front / back sorting of a square-shaped shallow plate-shaped part.
[0036]
【The invention's effect】
The front / back sorting mechanism for parts of the vibration parts feeder of the present invention is implemented in the above-described form, and has the following effects.
[0037]
That is, the front and back sorting mechanism for parts of the vibration parts feeder according to the present invention has two cut grooves into which the front and rear portions of the side wall portion of the shallow square dish-like part that is faced are fitted into the sorting truck. To form a tongue-shaped part, and provide an air ejection hole that opens at the tip of the tongue-shaped part. It is made to drop off by air, and further, the downstream cutting edge of the cutting groove is inclined to the downstream side so that the transfer force of torsional vibration can be used to drop off the parts. Sorting with the parts facing down can be performed very efficiently.
[Brief description of the drawings]
FIG. 1 is a diagram showing parts to be selected, A is a plan view, B is a cross-sectional view in the [B]-[B] line direction in A, and C is a [B]-[B] line direction in A It is sectional drawing.
FIG. 2 is a partial plan view of a bowl of a vibrating parts feeder.
3 is a cross-sectional view taken along line [3]-[3] in FIG.
4 is a cross-sectional view taken along the line [4]-[4] in FIG. 2;
5 is a cross-sectional view taken along line [5]-[5] in FIG.
6 is a cross-sectional view taken along line [6]-[6] in FIG.
7 is a cross-sectional view taken along line [7]-[7] in FIG.
8 is a plan view of the portion shown in FIG.
9 is a cross-sectional view taken along line [9]-[9] in FIG.
10 is a cross-sectional view taken along the line [10]-[10] in FIG.
11 is a cross-sectional view taken along line [11]-[11] in FIG.
FIG. 12 is a diagram illustrating the operation of the front / back sorting mechanism.
FIG. 13 is a perspective view of a part to be selected in a conventional example.
FIG. 14 is a partially broken side view of a general vibration parts feeder.
FIG. 15 is a plan view of a front / back sorting mechanism in a conventional example.
16 is a cross-sectional view taken along line [16]-[16] in FIG.
[Explanation of symbols]
31 Sorting Track 41 First Front / Back Sorting Mechanism 41 ′ Second Front / Back Sorting Mechanism 42a Cut Groove 42b Cut Groove 43 Tongue 44 Notch 45 Air Blowout Hole 51 Direction Sorting Mechanism

Claims

A shallow square plate-shaped part is selected along the peripheral wall of the bowl of the vibrating parts feeder, and the upstream side from the inner peripheral side to the selection truck that is inclined downward from the center of the bowl toward the outer diameter. Two cut grooves of the same shape are formed on the side and the downstream side to form a tongue-shaped portion, and the parts that are face-up transferred with the opening side up pass through as they are. The parts of the back-facing parts that are transferred as described above are fitted into the two notch grooves so that the front and rear parts of the side wall part are fitted in the inner peripheral side and are covered with the tongue-shaped part. In the front and back sorting mechanism of the parts of the vibration parts feeder that falls off and is sorted,
The tongue-shaped portion is provided with an air ejection hole penetrating upward in the radial direction with respect to the sorting track surface and opened at a tip on the inner circumferential side of the tongue-shaped portion, and an inner circumferential end of the sorting track is provided. The air is always ejected toward the center of the bowl in the radial direction, and the part facing down is dropped from the tongue-like part and selected by hitting the side wall part on the inner peripheral side of the part. The parts front and back sorting mechanism of the vibration parts feeder characterized by that.

In each of the two cutting grooves forming the tongue-shaped portion, the upstream cutting edge is linear in the radial direction, and the groove width of the cutting groove at the cutting tip is slightly smaller than the thickness of the side wall portion of the component. In order to increase the groove width of the cut groove toward the inner peripheral side, the cut edge on the downstream side is tapered to the downstream side in a taper shape with a predetermined angle from the radial direction,
The part of the part facing forward and backward of the side wall part fits into the two cut grooves, and the part covers the tongue part, and then falls off the tongue part by the blown air. In this case, the transfer force due to the torsional vibration of the vibration part feeder helps the part to drop off along the cut edge on the downstream side, whereby the part can be smoothly dropped from the tongue-like part. 2. A front / back sorting mechanism for parts of the vibration part feeder according to 1.

3. The plurality of front and back sorting mechanisms including the two cut grooves and the tongue-shaped portion provided with the air ejection holes are provided in series on the sorting track. The front and back sorting mechanism of the parts of the vibration parts feeder.

On the upstream side of the front and back sorting mechanism comprising the two cut grooves and the tongue-shaped portion provided with the air ejection hole, the outer circumferential wall of the sorting track reaches the circumferential wall surface from the upstream outer circumferential side to the circumferential wall. Is provided with an oblique slit, and the bottom surface of the slit is formed at a level lower than the thickness of the component from the sorting track on the peripheral wall surface, and among the components transferred in an overlapping manner, The lower part is transferred in contact with the peripheral wall without entering the slit, and the upper part of the upper part is in contact with the peripheral wall and enters the slit at the downstream slit surface. 4. The front / back sorting mechanism for parts of the vibration parts feeder according to claim 1, wherein the overlapping parts are broken and transferred to the front / back sorting mechanism by collision. 5.

The part is a rectangular part, and on the upstream side of the front / back sorting mechanism including the two cut grooves and the tongue-like part having the air ejection hole, the width of the sorting track is the rectangular shape. It is larger than ½ of the width of the part, and smaller than ½ of the length of the rectangular part. 5. The front / back sorting mechanism for parts of the vibration parts feeder according to claim 1, wherein the rectangular parts orthogonal to the transfer direction are eliminated and transferred to the front / back sorting mechanism.