JP4246886B2

JP4246886B2 - Cloth guide device for hole sewing machine

Info

Publication number: JP4246886B2
Application number: JP2000154221A
Authority: JP
Inventors: 彰一澁谷
Original assignee: Juki Corp
Current assignee: Juki Corp
Priority date: 2000-05-25
Filing date: 2000-05-25
Publication date: 2009-04-02
Anticipated expiration: 2020-05-25
Also published as: JP2001327781A

Description

【０００１】
【発明の属する技術分野】
本発明は穴かがりミシンの布押え装置に関し、特に縫製物を移動させる際に、針と縫製物との干渉を防止する布案内装置に関するものである。
【０００２】
【従来の技術】
この種の従来の穴かがりミシンの布案内装置については、例えばドイツ連邦共和国特許公告第２９９１２９７０Ｕ１号公報に布案内押え具付き鳩目穴かがりミシンが開示されている。この種の布案内押え具付き鳩目穴かがりミシンについて、図４、図５により説明する。
【０００３】
図４、図５は、布案内装置の主要部で、布押え装置が縫製位置にある状態を示し、図４、図５の左方を前側（作業者側）、右方を後側とし、作業者側から見て左側、右側とする。
１００は布送り台で、不図示の周知の布送り駆動装置により、針棒３１の下端に取付けられた針３０が最上昇位置付近にある時に、布押え装置を、針３０が上下動して縫製を行う縫製位置と、縫製位置より後側にあって不図示のメスにより布を切断する布切断位置とに移動させる。布送り台１００には左右の布受け板１０１、１０２が着脱可能に取付けられており、それぞれの上面には左右の押え受板１０３、１０４が固定されている。
【０００４】
左右の布受け板１０１、１０２の後部には、左右の押えレバー取付台１０５、１０５が固定されており、左右の押えレバー取付台１０５、１０５には左右の支点軸１０６、１０６が回動可能に支持されている。左右の支点軸１０６、１０６には左右の布押えレバー１０９、１１０が固定され、不図示の押え上げ駆動装置により左右の支点軸１０６、１０６を支点に揺動駆動される。
【０００５】
左右の布押えレバー１０９、１１０には左右の押え支持腕１１１、１１２の軸部が固定されており、左右の押え支持腕１１１、１１２の先端には左右の押え足１１３、１１４が回動可能に取付けられている。
また、左右の押え支持腕１１１、１１２の軸部には左右の布案内取付台１１６、１１６の一端が固定されており、左右の布案内取付台１１６、１１６の他端には左右の布案内押え具１１７、１１８が取付けられている。
【０００６】
次に、従来の鳩目穴かがりミシンの布案内装置（布案内押え具）の作用を、例えば、スラックス５０の後ポケット外側５１に鳩目ボタン穴５５を縫製する場合について説明する。
鳩目穴かがりミシンでは、縫製時の鳩目ボタン穴の縫目の裏側が縫製物の表側となるため、スラックス５０の後ポケットに鳩目ボタン穴を縫製する前に縫製物をセットする時には、左右の押え足１１３、１１４の上昇時に、後ポケットの入り口を押し広げて、ボタン穴が縫製されない側のポケット内側５３とウエスト側のスラックス外側５４とを左右の布案内押え具１１７、１１８の凹部１１７ａ，１１８ａに挿入後、ボタン穴が縫製される側のポケット内側５２を上にして、左右の押え足１１３、１１４の下側にセットし、左右の押え足１１３、１１４を下降させて後ポケット部を押さえる。
【０００７】
前記のように後ポケット部を左右の布案内押え具にセットすることにより、押し広げたポケット内側５３とスラックス外側５４とが左右の押え足１１３、１１４の前端側に戻らないように位置決めして保持することができる。
【０００８】
また、左右の布案内押え具１１７、１１８の凹部１１７ａ，１１８ａの内側上面１１７ｂ，１１８ｂでスラックス外側５４を下側に押しているため、布押え装置が布送り台１００とともに、図４の縫製位置よりも後側の布切断位置へ移動する際、および布切断位置から縫製位置へ移動する際に、針３０の先端がスラックス外側５４に触れることを防止できる。
【０００９】
【発明が解決しようとする課題】
しかしながら、この種の鳩目穴かがりミシンの布案内装置においては、布案内押え具が押え支持腕に布案内取付台を介して取付けられているため、押え支持腕が支点軸を中心に揺動すると、布案内押え具は押え足と一緒に上昇または下降する。
従って、ポケット内側５２上に押え足を下降させてポケット内側５２の位置決めをする際に、押え足を上下すると、左右の布案内押え具の凹部１１７ａ，１１８ａに挿入した部分の縫製物も上下してしまうので、ポケット内側５２部も動いてしまい、位置決めがしずらく、作業能率を低下させる問題があった。
【００１０】
また、押え足最下降時の押え足下面に対する布案内押え具下面の高さを調節できないため、縫製物の厚さが変化して布案内押え具の下面に位置する縫製物が厚くなった場合、布案内押え具が持上げられると押え足も一緒に持上げられるので、押え足で縫製物を十分な圧力で押えられないという問題があった。
【００１１】
さらに、この種の布案内押え具には線材が使用されており、左布案内押え具と右布案内押え具との間の水平方向の隙間からスラックス外側の一部が上側にはみ出し、布押え装置が縫製位置から布切断位置へ移動する際、および布切断位置から縫製位置へ移動する際に、針の先端がはみ出したスラックス外側に触れるという問題があった。
【００１２】
【課題を解決するための手段】
上記課題を解決するため、
請求項１の発明は、例えば図１、図３に示すように、上下動して縫製を行う針（３０）と、縫製物（５０）を載置して縫製位置と布切断位置とに移動する布受け板（１）と、前記縫製物を押える左右の押え足（１３、１４）を有する布押え装置と、を備える穴かがりミシンの布案内装置において、前記布受け板に取付けられた案内腕取付台（２０）と、前記案内腕取付台に回動自在に取付けられた布案内腕（１９）と、前記布案内腕の回動を１方向に付勢する付勢手段（ばね２１）と、布案内腕の回動量を調節するストッパー（２２）と、布案内腕に固定された布案内取付台（１８）と、前記布案内取付台に取付けられ、布受け板の移動時に、縫製物が前記針と干渉するのを防止する布案内カバー（１７）とを備え、前記布案内カバーを前記左右の押え足の上昇及び下降に無関係に設けたことを特徴とする。
【００１３】
この請求項１の発明によれば、布案内カバーを押え足の上昇及び下降に無関係に設けたので、ポケット内側（５２）の位置決めをする際に、押え足を上下しても、布案内カバーは上下動しない。従って、布案内カバー下部の凹部（１７ａ）に挿入した部分の縫製物が上下動しないため、ポケット内側も動かないので、位置決めしやすく、作業能率が向上する。
【００１４】
請求項２の発明は、請求項１に記載の穴かがりミシンの布案内装置において、例えば図１に示すように、布案内腕（１９）に傾斜面（１９ｂ）を設け、傾斜面に対するストッパー（２２）の位置を移動することにより、布案内カバー上面（１７ｂ）の高さを調節可能としたことを特徴とする。
【００１５】
この請求項２の発明によれば、請求項１の発明に記載の効果に加えて、布案内カバー上面の高さを調節可能としたので、縫製物を載置した布受け板が縫製位置から布切断位置へ移動する際、及び布切断位置から縫製位置へ移動する際に、布案内カバー上面が針の先端に触れない範囲内で、布案内カバーの高さを自由に調節することができ、縫製物を布案内カバーにセットする時の最適な布案内カバー高さを得ることができる。
【００１６】
請求項３の発明は、例えば図２、図３に示すように、上下動して縫製を行う針（３０）と、縫製物（５０）を載置して縫製位置と布切断位置とに移動する布受け板（１）と、前記縫製物を押える左右の押え足（１３、１４）を有する布押え装置と、を備える穴かがりミシンの布案内装置において、前記布受け板に取付けられた案内腕取付台（２０）と、前記案内腕取付台に回動自在に取付けられた布案内腕（１９）と、前記布案内腕の回動を１方向に付勢する付勢手段（２１）と、布案内腕の回動量を調節するストッパー（２２）と、布案内腕に固定された布案内取付台（１８）と、前記布案内取付台に取付けられ、布受け板の移動時に縫製物が前記針と干渉するのを防止する布案内カバー（１７）とを備え、布案内取付台に調節ねじ（２４）を設け、前記調節ねじの先端（２４ａ）が、前記左右の押え足の下降時の途中から、前記布押え装置を構成する布押えレバー（９）の端面（９ｂ）に接触するようにしたことにより、左右の押え足上昇時の前記布案内カバー上面（１７ｂ）の高さを、左右の押え足の上昇量に無関係に設定可能としたことを特徴とする。
【００１７】
この請求項３の発明によれば、押え足上昇時の布案内カバー上面の高さを、左右の押え足の上昇量に無関係に設定可能としたので、特に、厚い縫製物を布案内カバーにセットする際に、最適な布案内カバー高さを得ることができると同時に、ポケット内側（５２）の位置決めをする際に、左右の押え足を上下しても、布案内カバーは一定量しか上下動せず、布案内カバーの下部の凹部（１７ａ）に挿入した部分の縫製物が一定量しか上下動しないため、ポケット内側の動きが少ないので、位置決めしやすく、作業能率が向上する。
【００１８】
請求項４の発明は、請求項３に記載の穴かがりミシンの布案内装置において、例えば図２に示すように、調節ねじ（２４）の調節により、左右の押え足（１３、１４）の最下降時の左右の押え足下面（１３ａ、１４ａ）に対する布案内カバー下面（１７ｃ）の高さを変更可能としたことを特徴とする。
【００１９】
この請求項４の発明によれば、請求項３の発明に記載の効果に加えて、左右の押え足最下降時の左右の押え足下面に対する布案内カバー下面の高さを変更可能としたので、縫製物の厚さが変化して布案内カバーの下面に位置する縫製物が厚くなった場合でも、左右の押え足最下降時の左右の押え足下面に対する布案内カバー下面の高さを高くすれば、布案内カバーが持上げられず、左右の押え足も持上げられないため、左右の押え足で縫製物を十分な圧力で押えることができる。
【００２０】
請求項５の発明は、請求項１〜４に記載の穴かがりミシンの布案内装置において、布案内カバー（１７）が、十分な布受け面を有する板状部品で形成されていることを特徴とする。
この請求項５の発明によれば、布案内カバーを十分な布受け面を有する板状部品で形成したので、スラックス外側（５４）の一部が布案内カバーから上側にはみ出すことがなく、布押え装置が縫製位置から布切断位置へ移動する際、及び布切断位置から縫製位置へ移動する際に、針の先端がスラックス外側に触れることがない。
【００２１】
【発明の実施の形態】
以下、この発明の実施の形態について、図１、図２及び図３により説明する。図１、図３は、本発明の第１の実施例を示す布案内装置の主要部で、布押え装置が縫製位置にある状態を示し、図１の右方を前側（作業者側）、左方を後側とし、作業者側から見て左側、右側とする。
先ず布押え装置について説明する。
１は左布受け板、２は右布受け板であり、不図示の布送り台に着脱可能に取付けられている。布送り台は不図示の周知の布送り駆動装置により、針３０が最上昇位置付近にある時に、布押え装置を、針３０が上下動して縫製を行う縫製位置と、縫製位置より後側にあって不図示のメスにより布を切断する布切断位置とに移動させる。
【００２２】
左右の布受け板１、２の上面には左右の押え受け板３、４がねじ３ａで固定されている。また、左右の布受け板１、２の後部には、左右の押えレバー取付台５、５がねじ５ａで固定されており、左右の押えレバー取付台５、５には左右の支点軸６、６がＣリング７で回動可能に支持されている。左右の支点軸６、６には左右の布押えレバー９、１０がねじ９ａで固定され、不図示の押え上げ駆動装置により左右の支点軸６、６を支点に揺動駆動される。
【００２３】
左右の布押えレバー９、１０には左右の押え支持腕１１、１２の軸部がねじ８で固定されており、左右の押え支持腕１１、１２の先端には左右の押え足１３、１４がばね座金１６を介して段ねじ１５により回動可能に取付けられている。
そして、左右の布押えレバー９、１０が図１の矢印A方向に揺動すると、左右の押え足１３、１４が上昇し、図１の矢印Aの逆方向に揺動すると、左右の押え足１３、１４は下降する。
【００２４】
次に、布案内装置について説明する。
左の押えレバー取付台５の上面には、下部に上下方向の長穴２０ｂとばね掛け穴及び上部にねじ穴を有する案内腕取付台２０がねじ２０ａで固定されており、上部のねじ穴には段ねじ２６で布案内腕１９が回動自在に取付けられており、下部のばね掛け穴にはばね２１（付勢手段）の一端が掛けられ、ばね２１の他端は布案内腕１９のばね掛け穴に掛けられ、布案内腕１９を段ねじ２６を支点に反時計方向に付勢している。案内腕取付台２０の下部の長穴２０ｂには、布案内腕１９の回動量を調節するストッパー２２が、上下方向位置調節可能にナット２３で固定されている。
【００２５】
布案内腕１９は傾斜面１９ｂを有するレバー部と中央部の段ねじ穴部と長穴を有する腕部で形成されており、レバー部の傾斜面１９ｂがストッパー２２に接触することにより、布案内腕１９の回動を止めている。長穴を有する腕部には布案内取付台１８の上端部がねじ１９ａで固定されており、布案内取付台１８の下端部には布案内カバー１７がねじ１７ｄで固定されている。
【００２６】
第1の実施例は以上の構成であり、以下に作用を、例えば、スラックス５０の後ポケット外側５１に鳩目ボタン穴を縫製する場合について説明する。
鳩目穴かがりミシンでは、縫製時の鳩目ボタン穴の縫目の裏側が縫製物の表側となるため、
スラックス５０の後ポケットに鳩目ボタン穴を縫製する前に縫製物をセットする時には、左右の押え足１３、１４の上昇時に、後ポケットの入り口を押し広げて、ボタン穴が縫製されない側のポケット内側５３とウエスト側のスラックス外側５４とを、布案内カバー１７の下部の凹部１７ａに挿入後、ボタン穴が縫製される側のポケット内側５２を上にして、左右の押え足１３、１４の下側にセットし、左右の押え足１３、１４を下降させて後ポケット部を押える。
【００２７】
ここで、ポケット内側５２の位置を修正するために、左右の押え足１３、１４を上昇させても、布案内腕１９はばね２１で反時計方向に付勢されてストッパー２２に接触しているので、布案内カバー１７は上昇しない。
また、ストッパー２２の固定ナット２３を緩めて、ストッパー２２を上下方向に移動させると、布案内腕１９の回動量が変化するので、布案内カバー１７の高さを自由に調節することができる。
【００２８】
前記のように後ポケット部を布案内装置にセットすることにより、押し広げたポケット内側５３とスラックス外側５４とが左右の押え足１３、１４の前端側に戻らないように位置決めして保持することができる。
【００２９】
また、布案内カバー上面１７ｂの裏面でスラックス外側５４を下側に押しており、また、布案内カバー１７が板状部品で形成されているので、スラックス外側５４の一部が上側にはみ出すこともないため、布押え装置が不図示の布送り台とともに、図１の縫製位置よりも後側の布切断位置へ移動する際、及び布切断位置から縫製位置へ移動する際に、針３０の先端がスラックス外側５４に触れることを防止できる。
【００３０】
図２、図３は、本発明の第２の実施例を示す布案内装置の主要部で、第１の実施例に対し布案内取付台１８に調節ねじ２４がナット２５で固定されている点のみが異なる。
従って、調節ねじ２４の作用についてのみ説明し、構成については説明を省略する。
図２は布押え装置が縫製位置にある状態を示し、図２の右方を前側（作業者側）、左方を後側とし、作業者側から見て左側、右側とする。
【００３１】
図２（Ａ）は、左右の布押えレバー９、１０が矢印Ｃ方向に揺動し始め、左右の押え足１３、１４が最上昇位置から下降し、左の布押えレバー９の端面９ｂが調節ねじ２４の先端２４ａに接触した状態、または左右の押え足１３、１４が最下降位置から上昇し、左の布押えレバー９の端面９ｂが調節ねじ２４の先端２４ａから離れ始める状態を示す。
【００３２】
ここで、布案内腕１９はばね２１で反時計方向に付勢されてストッパー２２に接触して止っているので、左右の押え足１３，１４の下降時に左の布押えレバー９の端面９ｂが調節ねじ２４の先端２４ａを押すまでは、布案内カバー１７は下降しない。
【００３３】
この状態から、左の布押えレバー９の端面９ｂが調節ねじ２４の先端２４ａを更に押すと、布案内腕１９はばね２１の付勢力に抗して段ねじ２６を支点に時計方向に回動し、布案内カバー１７も下降する。この時、布案内腕１９の傾斜面１９ｂはストッパー２２から離れ、図２（Ｂ）に示すように隙間が生じ、この隙間は左右の押え足１３，１４の最下降時に最大となる。
【００３４】
図２（Ｂ）は、左右の押え足１３、１４が最下降し、スラックスのポケット内側５２を押えた状態を示す。
この状態から、ポケット内側５２の位置を修正するために、左右の布押えレバー９、１０を矢印Ｄ方向に揺動させて、左右の押え足１３、１４を上昇させた時、布案内カバー１７は布案内腕１９の傾斜面１９ｂとストッパー２２との前記隙間がなくなるまでは左右の押え足１３，１４と一緒に上昇するが、傾斜面１９ｂがストッパー２２に接触した後は左右の押え足１３，１４が更に上昇しても布案内カバー１７は上昇しない。従って、布案内カバー１７は左右の押え足１３，１４の上昇量に関係なく一定量しか上昇しない。
【００３５】
また、図２（Ｂ）において、調節ねじ２４の固定ナット２５を緩めて、調節ねじ２４の先端２４ａを後側に突出すと、布案内腕１９が時計方向に回動するので、左右の押え足１３，１４最下降時の左右の押え足下面１３ａ，１４ａに対する布案内カバー下面１７ｃの高さは低くなる。また、調節ねじ２４の先端２４ａを前側に引っ込めると、布案内腕１９が反時計方向に回動するので、左右の押え足１３，１４最下降時の左右の押え足下面１３ａ，１４ａに対する布案内カバー下面１７ｃの高さは高くなる。
【００３６】
なお、本発明は上述した実施の形態に限定されるものではなく、例えば、調節ねじまたは調節板を左の押え支持腕１１の軸部１１ａに接触させる構成としてもよい。
また、布案内カバー１７と布案内取付台１８と布案内腕１９とを一体物で形成する構成としてもよい。
さらに、布案内装置を右の押えレバー取付台上面に取付ける構成としてもよく、この場合は布案内装置の各構成部品を上記の各部品形状に対し左右対称形状とすればよい。
【００３７】
【発明の効果】
請求項１に記載の発明によれば、布案内カバーを押え足の上昇及び下降に無関係に設けたので、ポケット内側５２の位置決めをする際に、押え足を上下しても、布案内カバーは上下動しない。従って、布案内カバーの下部の凹部１７ａに挿入した部分の縫製物が上下動しないため、ポケット内側５２も動かないので、位置決めしやすく、作業能率を向上する優れた効果がある。
【００３８】
請求項２に記載の発明によれば、請求項１に記載の発明の効果に加えて、布案内カバー上面の高さを調節可能としたので、縫製物を載置した布受け板が縫製位置から布切断位置へ移動する際、及び布切断位置から縫製位置へ移動する際に、布案内カバー上面が針の先端に触れない範囲内で、布案内カバーの高さを自由に調節することができ、縫製物を布案内カバーにセットする時の最適な布案内カバー高さを得ることができるという優れた効果がある。
【００３９】
請求項３に記載の発明によれば、押え足上昇時の布案内カバー上面の高さを、押え足の上昇量に無関係に設定可能としたので、特に、厚い縫製物を布案内カバーにセットする際に、最適な布案内カバー高さを得ることができると同時に、ポケット内側５２の位置決めをする際に、押え足を上下しても、布案内カバーは一定量しか上下動せず、布案内カバー下部の凹部１７ａに挿入した部分の縫製物が一定量しか上下動しないため、ポケット内側５２の動きが少ないので、位置決めしやすく、作業能率を向上する優れた効果がある。
【００４０】
請求項４に記載の発明によれば、請求項３に記載の発明の効果に加えて、押え足最下降時の押え足下面に対する布案内カバー下面の高さを変更可能としたので、縫製物の厚さが変化して布案内カバーの下面に位置する縫製物が厚くなった場合でも、押え足最下降時の押え足下面に対する布案内カバー下面の高さを高くすれば、布案内カバーが持上げられず、押え足も持上げられないため、押え足で縫製物を十分な圧力で押えることができるという優れた効果がある。
【００４１】
請求項５に記載の発明によれば、布案内カバーを十分な布受け面を有する板状部品で形成したので、スラックス外側の一部が布案内カバーから上側にはみ出すことがなく、布押え装置が縫製位置から布切断位置へ移動する際、及び布切断位置から縫製位置へ移動する際に、針の先端がスラックス外側に触れるのを防止する優れた効果がある。
【図面の簡単な説明】
【図１】本発明における第１の実施の形態の布案内装置の主要部の側面図。
【図２】本発明における第２の実施の形態の布案内装置の主要部の側面図。
【図３】本発明における実施の形態の布案内装置の主要部の分解斜視図。
【図４】従来の布案内装置の主要部の側面図。
【図５】従来の布案内装置の主要部の平面図。
【符号の説明】
１、１０１左布受け板
２、１０２右布受け板
３、１０３左押え受け板
４、１０４右押え受け板
５、１０５押えレバー取付台
６、１０６支点軸
９、１０９左布押えレバー
１０、１１０右布押えレバー
１１、１１１左押え支持腕
１２、１１２右押え支持腕
１３、１１３左押え足
１４、１１４右押え足
１７布案内カバー
１８布案内取付台
１９布案内腕
２０案内腕取付台
２１ばね（付勢手段）
２２ストッパー
２４調節ねじ
３０針
５０縫製物（スラックス）
１００布送り台
１１７左布案内押え具
１１８右布案内押え具[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a presser device for a hole sewing machine, and more particularly to a cloth guide device that prevents interference between a needle and a sewn product when the sewn product is moved.
[0002]
[Prior art]
As for a cloth guide device for a conventional hole sewing machine of this type, for example, a piggy hole sewing machine with a cloth guide presser is disclosed in German Patent Publication No. 29912970U1. This type of eyelet hole sewing machine with a cloth guide presser will be described with reference to FIGS.
[0003]
4 and 5 show the main part of the cloth guide device and the state where the cloth presser device is in the sewing position. The left side of FIGS. 4 and 5 is the front side (operator side) and the right side is the rear side. The left and right sides as viewed from the operator side.
Reference numeral 100 denotes a cloth feed base. When the needle 30 attached to the lower end of the needle bar 31 is near the highest position by a well-known cloth feed driving device (not shown), the needle presser 30 moves up and down. The sewing position is moved to a sewing position where sewing is performed and a cloth cutting position which is behind the sewing position and cuts the cloth with a knife (not shown). Left and right cloth receiving plates 101 and 102 are detachably attached to the cloth feed base 100, and left and right presser receiving plates 103 and 104 are fixed to the respective upper surfaces.
[0004]
The left and right presser lever mounting bases 105 and 105 are fixed to the rear portions of the left and right cloth receiving plates 101 and 102, and the left and right presser lever mounting bases 105 and 105 can rotate the left and right fulcrum shafts 106 and 106. It is supported by. Left and right fabric presser levers 109 and 110 are fixed to the left and right fulcrum shafts 106 and 106, respectively, and are driven to swing around the left and right fulcrum shafts 106 and 106 by a presser lifting drive device (not shown).
[0005]
The left and right presser foot support arms 111 and 112 are fixed to the left and right presser foot support arms 111 and 110, and the left and right presser foot support arms 111 and 112 are pivoted to the distal ends of the left and right presser foot support arms 111 and 112. Installed on.
One end of the left and right cloth guide mounting bases 116 and 116 is fixed to the shaft portions of the left and right presser supporting arms 111 and 112, and the other end of the left and right cloth guide mounting bases 116 and 116 is fixed to the left and right cloth guide mounting bases 116 and 116. Pressers 117 and 118 are attached.
[0006]
Next, the operation of a conventional eyelet sewing machine cloth guide device (cloth guide presser) will be described, for example, when the eyelet button hole 55 is sewn on the outer side 51 of the rear pocket of the slacks 50.
In the eyelet overlocking machine, the back side of the eyelet buttonhole stitch at the time of sewing is the front side of the sewing product. When the legs 113 and 114 are lifted, the rear pocket entrance is pushed and the pocket inner side 53 where the button hole is not sewn and the slack outer side 54 on the waist side are recessed 117a and 118a of the left and right cloth guide pressers 117 and 118, respectively. After the insertion, the pocket inner side 52 on the side where the button hole is sewn is set up and set to the lower side of the left and right presser feet 113, 114, and the left and right presser feet 113, 114 are lowered to press the rear pocket part. .
[0007]
As described above, the rear pocket portion is set on the right and left cloth guide pressers so that the expanded pocket inner side 53 and slack outer side 54 are positioned so as not to return to the front end sides of the left and right presser feet 113 and 114. Can be held.
[0008]
Further, since the slack outer side 54 is pushed downward by the inner upper surfaces 117b, 118b of the recesses 117a, 118a of the left and right cloth guide pressers 117, 118, the cloth presser and the cloth feed base 100 together with the sewing position of FIG. Further, when moving to the rear cloth cutting position and when moving from the cloth cutting position to the sewing position, it is possible to prevent the tip of the needle 30 from touching the slack outer side 54.
[0009]
[Problems to be solved by the invention]
However, in this kind of eyelet sewing machine cloth guide device, since the cloth guide presser is attached to the presser support arm via the cloth guide mount, the presser support arm swings around the fulcrum shaft. The cloth guide presser is raised or lowered together with the presser foot.
Therefore, when the presser foot is lowered on the pocket inner side 52 and the pocket inner side 52 is positioned, if the presser foot is moved up and down, the portion of the sewing material inserted into the recesses 117a and 118a of the left and right cloth guide pressers also moves up and down. Therefore, the pocket inner side 52 part also moves, positioning is difficult, and there is a problem that the work efficiency is lowered.
[0010]
Also, the height of the bottom surface of the cloth guide presser foot relative to the bottom surface of the presser foot when the presser foot is at its lowest position cannot be adjusted. When the cloth guide presser is lifted, the presser foot is lifted together, and there is a problem that the presser foot cannot press the sewing product with sufficient pressure.
[0011]
Furthermore, a wire rod is used for this type of cloth guide presser, and a part of the outer side of the slack protrudes upward from the horizontal gap between the left cloth guide presser and the right cloth guide presser. When the apparatus moves from the sewing position to the cloth cutting position and when moving from the cloth cutting position to the sewing position, there is a problem that the tip of the needle touches the outside of the protruding slacks.
[0012]
[Means for Solving the Problems]
To solve the above problem,
In the first aspect of the invention, for example, as shown in FIGS. 1 and 3, a needle (30) that moves up and down and a sewing product (50) are placed and moved to a sewing position and a cloth cutting position. A guide attached to the cloth receiving plate in a cloth guide device for a perforated sewing machine, comprising: a cloth receiving plate (1) to be pressed and a cloth presser device having left and right presser feet (13, 14) for pressing the sewing product. An arm mount (20), a cloth guide arm (19) rotatably attached to the guide arm mount, and a biasing means (spring 21) for biasing the rotation of the cloth guide arm in one direction And a stopper (22) for adjusting the amount of rotation of the cloth guide arm, a cloth guide mounting base (18) fixed to the cloth guide arm, and a sewing machine that is attached to the cloth guide mounting base and moves when the cloth receiving plate is moved. A cloth guide cover (17) for preventing an object from interfering with the needle, wherein the cloth guide cover is It is characterized by being provided regardless of the rise and fall of the left and right presser feet.
[0013]
According to the first aspect of the present invention, since the cloth guide cover is provided regardless of the rise and fall of the presser foot, even when the presser foot is moved up and down when positioning the pocket inner side (52), the cloth guide cover is provided. Does not move up and down. Accordingly, since the sewn product inserted into the concave portion (17a) at the lower part of the cloth guide cover does not move up and down, the inside of the pocket does not move, so that positioning is easy and work efficiency is improved.
[0014]
According to a second aspect of the present invention, in the cloth guide device for a hole sewing machine according to the first aspect, for example, as shown in FIG. 1, the cloth guide arm (19) is provided with an inclined surface (19b), and a stopper ( The height of the upper surface (17b) of the cloth guide cover can be adjusted by moving the position 22).
[0015]
According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the height of the upper surface of the cloth guide cover can be adjusted, so that the cloth receiving plate on which the sewing product is placed can be moved from the sewing position. When moving to the cloth cutting position and when moving from the cloth cutting position to the sewing position, the height of the cloth guide cover can be freely adjusted within the range where the upper surface of the cloth guide cover does not touch the tip of the needle. The optimum cloth guide cover height can be obtained when the sewing product is set on the cloth guide cover.
[0016]
In the invention of claim 3, for example, as shown in FIGS. 2 and 3, a needle (30) for performing sewing by moving up and down and a sewing product (50) are placed and moved to a sewing position and a cloth cutting position. A guide attached to the cloth receiving plate in a cloth guide device for a perforated sewing machine, comprising: a cloth receiving plate (1) to be pressed and a cloth presser device having left and right presser feet (13, 14) for pressing the sewing product. An arm mounting base (20); a cloth guide arm (19) rotatably attached to the guide arm mounting base; and a biasing means (21) for biasing the rotation of the cloth guide arm in one direction. , A stopper (22) for adjusting the amount of rotation of the cloth guide arm, a cloth guide mount (18) fixed to the cloth guide arm, and the fabric guide attached to the cloth guide mount. A cloth guide cover (17) for preventing interference with the needle, and an adjustment screw (24 And the tip (24a) of the adjusting screw is brought into contact with the end surface (9b) of the presser foot lever (9) constituting the presser foot device while the left and right presser feet are being lowered. Thus, the height of the cloth guide cover upper surface (17b) when the left and right presser feet are raised can be set regardless of the amount of rise of the left and right presser feet.
[0017]
According to the third aspect of the present invention, the height of the upper surface of the cloth guide cover when the presser foot is raised can be set regardless of the lift amount of the left and right presser feet. When setting, the optimal cloth guide cover height can be obtained. At the same time, when positioning the inside of the pocket (52), the cloth guide cover can be moved up and down by a certain amount even if the left and right presser feet are moved up and down. Since the portion of the sewn product inserted into the recess (17a) below the cloth guide cover does not move and moves up and down only by a certain amount, there is little movement inside the pocket, so positioning is easy and work efficiency is improved.
[0018]
According to a fourth aspect of the present invention, there is provided a cloth guide device for a perforated sewing machine according to the third aspect of the present invention, for example, as shown in FIG. 2, by adjusting an adjustment screw (24), The height of the cloth guide cover lower surface (17c) with respect to the lower left and right presser foot lower surfaces (13a, 14a) when lowered can be changed.
[0019]
According to the fourth aspect of the invention, in addition to the effect described in the third aspect of the invention, the height of the lower surface of the cloth guide cover relative to the lower surface of the left and right presser foot when the left and right presser foot is lowered can be changed. Even when the thickness of the sewing product changes and the sewing product located on the lower surface of the cloth guide cover becomes thicker, the height of the lower surface of the cloth guide cover with respect to the lower surface of the left and right presser foot In this case, the cloth guide cover cannot be lifted and the left and right presser feet cannot be lifted, so that the sewing product can be pressed with sufficient pressure by the left and right presser feet.
[0020]
According to a fifth aspect of the present invention, in the cloth guide device for a perforated sewing machine according to any one of the first to fourth aspects, the cloth guide cover (17) is formed of a plate-like component having a sufficient cloth receiving surface. And
According to the invention of claim 5, since the cloth guide cover is formed of a plate-shaped part having a sufficient cloth receiving surface, a part of the slack outer side (54) does not protrude upward from the cloth guide cover. When the presser device moves from the sewing position to the cloth cutting position and when moving from the cloth cutting position to the sewing position, the tip of the needle does not touch the outside of the slack.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 3 show the main part of the cloth guiding apparatus according to the first embodiment of the present invention, in which the cloth presser is in the sewing position, and the right side of FIG. 1 is the front side (operator side), The left side is the rear side, and the left side and the right side when viewed from the operator side.
First, the presser foot device will be described.
Reference numeral 1 denotes a left cloth receiving plate, and 2 denotes a right cloth receiving plate, which are detachably attached to a cloth feed base (not shown). The cloth feed base is driven by a well-known cloth feed driving device (not shown), and when the needle 30 is in the vicinity of the highest position, the cloth presser device is moved to the sewing position where the needle 30 moves up and down to perform sewing, and the rear side from the sewing position. Then, the cloth is moved to a cloth cutting position where the cloth is cut by a knife (not shown).
[0022]
Left and right presser receiving plates 3 and 4 are fixed to the upper surfaces of the left and right fabric receiving plates 1 and 2 with screws 3a. Further, left and right presser lever mounting bases 5 and 5 are fixed to the rear portions of the left and right cloth receiving plates 1 and 2 with screws 5a, and the left and right presser lever mounting bases 5 and 5 have left and right fulcrum shafts 6, 6 is rotatably supported by a C ring 7. Left and right cloth presser levers 9 and 10 are fixed to the left and right fulcrum shafts 6 and 6 by screws 9a, and are driven to swing around the left and right fulcrum shafts 6 and 6 by a presser lifting drive device (not shown).
[0023]
The shaft portions of the left and right presser support arms 11 and 12 are fixed to the left and right presser foot levers 9 and 10 with screws 8, and left and right presser feet 13 and 14 are provided at the ends of the left and right presser support arms 11 and 12. It is rotatably attached by a step screw 15 via a spring washer 16.
When the left and right presser foot levers 9 and 10 swing in the direction of arrow A in FIG. 1, the left and right presser feet 13 and 14 rise, and when the left and right presser foot swings in the direction opposite to arrow A in FIG. 13 and 14 descend.
[0024]
Next, the cloth guide device will be described.
On the upper surface of the left presser lever mounting base 5, a guide arm mounting base 20 having a vertical slot 20b and a spring hook hole in the lower part and a screw hole in the upper part is fixed with screws 20a. The cloth guide arm 19 is rotatably attached by a step screw 26, and one end of a spring 21 (biasing means) is hung on the lower spring hooking hole, and the other end of the spring 21 is connected to the cloth guide arm 19. The cloth guide arm 19 is urged counterclockwise by the step screw 26 as a fulcrum. A stopper 22 that adjusts the amount of rotation of the cloth guide arm 19 is fixed to the elongated hole 20b below the guide arm mounting base 20 with a nut 23 so that the vertical position can be adjusted.
[0025]
The cloth guide arm 19 is formed of a lever portion having an inclined surface 19b, an arm portion having a stepped screw hole portion and a long hole in the center portion, and the inclined surface 19b of the lever portion comes into contact with the stopper 22 to thereby guide the cloth. The rotation of the arm 19 is stopped. The upper end portion of the cloth guide mounting base 18 is fixed to the arm portion having the long hole by a screw 19a, and the cloth guide cover 17 is fixed to the lower end portion of the cloth guide mounting base 18 by a screw 17d.
[0026]
The first embodiment has the above-described configuration, and the operation will be described below, for example, when the eyelet button hole is sewn in the rear pocket outer side 51 of the slacks 50.
In the eyelet overhauling machine, the back side of the eyelet buttonhole stitch when sewing is the front side of the sewing product.
When setting the sewing product before sewing the eyelet button hole in the rear pocket of the slacks 50, when the left and right presser feet 13 and 14 are raised, the entrance of the rear pocket is pushed wide and the inside of the pocket on the side where the button hole is not sewn 53 and the waist slack outer side 54 are inserted into the recess 17a at the bottom of the cloth guide cover 17, and then the lower side of the left and right presser foot 13, 14 with the pocket inner side 52 on the side where the button hole is sewn up. The left and right presser feet 13 and 14 are lowered to press the rear pocket portion.
[0027]
Here, in order to correct the position of the pocket inner side 52, even if the left and right presser feet 13 and 14 are raised, the cloth guide arm 19 is biased counterclockwise by the spring 21 and is in contact with the stopper 22. Therefore, the cloth guide cover 17 does not rise.
Further, when the fixing nut 23 of the stopper 22 is loosened and the stopper 22 is moved in the vertical direction, the rotation amount of the cloth guide arm 19 changes, so that the height of the cloth guide cover 17 can be freely adjusted.
[0028]
By positioning the rear pocket portion in the cloth guide device as described above, the pocket inner side 53 and the slack outer side 54 that have been spread are positioned and held so as not to return to the front end sides of the left and right presser feet 13 and 14. Can do.
[0029]
Further, the slack outer side 54 is pushed downward on the back surface of the cloth guide cover upper surface 17b, and since the cloth guide cover 17 is formed of a plate-like component, a part of the slack outer side 54 does not protrude upward. Therefore, when the cloth presser device moves together with the cloth feed base (not shown) to the cloth cutting position behind the sewing position in FIG. 1 and when moving from the cloth cutting position to the sewing position, the tip of the needle 30 is moved. Touching the slack outer side 54 can be prevented.
[0030]
2 and 3 show the main part of the cloth guide device according to the second embodiment of the present invention. In contrast to the first embodiment, an adjustment screw 24 is fixed to the cloth guide mount 18 with a nut 25. FIG. Only the difference.
Therefore, only the operation of the adjusting screw 24 will be described, and the description of the configuration will be omitted.
FIG. 2 shows a state in which the presser foot device is in the sewing position, and the right side in FIG. 2 is the front side (operator side), the left side is the rear side, and the left side and the right side when viewed from the operator side.
[0031]
In FIG. 2A, the left and right presser foot levers 9 and 10 start to swing in the direction of arrow C, the left and right presser foot legs 13 and 14 are lowered from the highest position, and the end surface 9b of the left presser foot lever 9 is This shows a state in which the tip 24a of the adjustment screw 24 is in contact, or a state in which the left and right presser feet 13 and 14 are lifted from the lowest position, and the end surface 9b of the left presser foot lever 9 starts to be separated from the tip 24a of the adjustment screw 24.
[0032]
Here, since the cloth guide arm 19 is biased counterclockwise by the spring 21 and is stopped by contacting the stopper 22, the end face 9b of the left cloth presser lever 9 is moved when the left and right presser legs 13 and 14 are lowered. The cloth guide cover 17 does not descend until the tip 24a of the adjusting screw 24 is pushed.
[0033]
From this state, when the end surface 9b of the left fabric presser lever 9 further presses the tip 24a of the adjustment screw 24, the fabric guide arm 19 rotates clockwise with the step screw 26 as a fulcrum against the biasing force of the spring 21. The cloth guide cover 17 is also lowered. At this time, the inclined surface 19b of the cloth guide arm 19 is separated from the stopper 22, and a gap is formed as shown in FIG. 2B. This gap is maximized when the left and right presser feet 13 and 14 are lowered.
[0034]
FIG. 2 (B) shows a state in which the left and right presser feet 13 and 14 are moved down to press the inner side 52 of the slack pocket.
From this state, when the left and right presser foot levers 9 and 10 are swung in the direction of the arrow D to raise the left and right presser feet 13 and 14 in order to correct the position of the pocket inner side 52, the cloth guide cover 17 Is lifted together with the left and right presser feet 13 and 14 until the gap between the inclined surface 19b of the cloth guide arm 19 and the stopper 22 disappears, but after the inclined surface 19b contacts the stopper 22, the left and right presser foot 13 , 14 does not rise even if the cloth guide cover 17 rises. Accordingly, the cloth guide cover 17 rises only by a fixed amount regardless of the raising amounts of the left and right presser feet 13 and 14.
[0035]
In FIG. 2B, when the fixing nut 25 of the adjustment screw 24 is loosened and the tip 24a of the adjustment screw 24 protrudes rearward, the cloth guide arm 19 rotates in the clockwise direction. The height of the cloth guide cover lower surface 17c with respect to the left and right presser foot lower surfaces 13a and 14a when the feet 13 and 14 are lowered is lowered. Further, when the tip 24a of the adjusting screw 24 is retracted to the front side, the cloth guide arm 19 rotates counterclockwise, so that the cloth guide for the left and right presser foot lower surfaces 13a and 14a when the left and right presser foot 13 and 14 are at the lowest position. The height of the cover lower surface 17c is increased.
[0036]
The present invention is not limited to the above-described embodiment, and for example, an adjustment screw or an adjustment plate may be brought into contact with the shaft portion 11a of the left presser support arm 11.
Alternatively, the cloth guide cover 17, the cloth guide mounting base 18, and the cloth guide arm 19 may be formed as a single body.
Further, the cloth guide device may be mounted on the upper surface of the right presser lever mounting base, and in this case, each component of the cloth guide device may be symmetrical with respect to each of the above-described component shapes.
[0037]
【The invention's effect】
According to the first aspect of the present invention, since the cloth guide cover is provided regardless of the rise and fall of the presser foot, even when the presser foot is moved up and down when positioning the pocket inner side 52, the cloth guide cover is Does not move up and down. Therefore, since the sewing product of the portion inserted into the concave portion 17a at the lower part of the cloth guide cover does not move up and down, the pocket inner side 52 also does not move, so that the positioning is easy and the work efficiency is improved.
[0038]
According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the height of the upper surface of the cloth guide cover can be adjusted, so that the cloth receiving plate on which the sewing product is placed is located at the sewing position. When moving from the cloth cutting position to the cloth cutting position and when moving from the cloth cutting position to the sewing position, the height of the cloth guide cover can be freely adjusted within the range where the upper surface of the cloth guide cover does not touch the tip of the needle. It is possible to obtain an optimum height of the cloth guide cover when the sewing product is set on the cloth guide cover.
[0039]
According to the third aspect of the present invention, since the height of the upper surface of the cloth guide cover when the presser foot is raised can be set regardless of the lift amount of the presser foot, in particular, a thick sewing product is set on the cloth guide cover. When positioning the pocket inner side 52, the cloth guide cover can be moved up and down by a certain amount even when the presser foot is moved up and down. Since the sewn product inserted into the recess 17a at the lower part of the guide cover moves up and down only by a certain amount, there is little movement of the pocket inner side 52, so that the positioning is easy and the work efficiency is improved.
[0040]
According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, the height of the lower surface of the cloth guide cover relative to the lower surface of the presser foot when the presser foot is at the lowest position can be changed. Even if the thickness of the fabric changes and the sewing product located on the lower surface of the cloth guide cover becomes thicker, if the height of the lower surface of the presser foot with respect to the lower surface of the presser foot is increased, the cloth guide cover Since it is not lifted and the presser foot cannot be lifted, there is an excellent effect that the presser foot can press the sewing product with sufficient pressure.
[0041]
According to the invention described in claim 5, since the cloth guide cover is formed of a plate-like component having a sufficient cloth receiving surface, a part of the outer side of the slack does not protrude upward from the cloth guide cover, and the cloth presser device When the needle moves from the sewing position to the cloth cutting position, and when moving from the cloth cutting position to the sewing position, there is an excellent effect of preventing the tip of the needle from touching the outside of the slacks.
[Brief description of the drawings]
FIG. 1 is a side view of a main part of a cloth guide device according to a first embodiment of the present invention.
FIG. 2 is a side view of a main part of a cloth guide device according to a second embodiment of the present invention.
FIG. 3 is an exploded perspective view of a main part of the cloth guide device according to the embodiment of the present invention.
FIG. 4 is a side view of a main part of a conventional cloth guide device.
FIG. 5 is a plan view of a main part of a conventional cloth guide device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1,101 Left cloth receiving plate 2,102 Right cloth receiving plate 3,103 Left presser receiving plate 4,104 Right presser receiving plate 5,105 Presser lever mounting base 6,106 Support point shaft 9,109 Left cloth presser lever 10,110 Right presser foot lever 11, 111 Left presser support arm 12, 112 Right presser support arm 13, 113 Left presser foot 14, 114 Right presser foot 17 Cloth guide cover 18 Cloth guide mount 19 Cloth guide arm 20 Guide arm mount 21 Spring (Biasing means)
22 Stopper 24 Adjustment screw 30 Needle 50 Sewing product (slacks)
100 Cloth feed stand 117 Left cloth guide presser 118 Right cloth guide presser

Claims

A needle that moves up and down to sew,
A cloth receiving plate for placing a sewing product and moving between a sewing position and a cloth cutting position;
A cloth presser device having a presser foot for pressing the sewing product,
A guide arm mounting base attached to the cloth backing plate;
A cloth guide arm rotatably attached to the guide arm mount;
Biasing means for biasing the rotation of the cloth guide arm in one direction;
A stopper for adjusting the amount of rotation of the cloth guide arm;
A cloth guide mount fixed to the cloth guide arm;
A cloth guide cover that is attached to the cloth guide mounting base and prevents the sewing product from interfering with the needle when the cloth receiving plate moves;
A cloth guide device for a boring machine, wherein the cloth guide cover is provided irrespective of the rise and fall of the presser foot.

2. The boring according to claim 1, wherein the cloth guide arm is provided with an inclined surface, and the height of the upper surface of the cloth guide cover can be adjusted by moving a position of the stopper with respect to the inclined surface. Sewing machine cloth guide device.

A needle that moves up and down to sew,
A cloth receiving plate for placing a sewing product and moving between a sewing position and a cloth cutting position;
A cloth presser device having a presser foot for pressing the sewing product,
A guide arm mounting base attached to the cloth backing plate;
A cloth guide arm rotatably attached to the guide arm mount;
Biasing means for biasing the rotation of the cloth guide arm in one direction;
A stopper for adjusting the amount of rotation of the cloth guide arm;
A cloth guide mount fixed to the cloth guide arm;
A cloth guide cover that is attached to the cloth guide mounting base and prevents the sewing product from interfering with the needle when the cloth receiving plate moves;
An adjustment screw is provided on the cloth guide mount, and the tip of the adjustment screw is brought into contact with the end surface of the presser foot constituting the presser foot device while the presser foot is being lowered. A cloth guide device for a boring machine, wherein the height of the upper surface of the cloth guide cover when it is raised can be set regardless of the amount of lift of the presser foot.

The cloth guide device for a boring machine according to claim 3, wherein the height of the lower surface of the cloth guide cover relative to the lower surface of the presser foot when the presser foot is lowered is adjustable by adjusting the adjustment screw.

5. The cloth guide device for a boring machine according to claim 1, wherein the cloth guide cover is formed of a plate-like component having a sufficient cloth receiving surface.