JP4016802B2 - Rebar binding machine - Google Patents

Rebar binding machine Download PDF

Info

Publication number
JP4016802B2
JP4016802B2 JP2002312187A JP2002312187A JP4016802B2 JP 4016802 B2 JP4016802 B2 JP 4016802B2 JP 2002312187 A JP2002312187 A JP 2002312187A JP 2002312187 A JP2002312187 A JP 2002312187A JP 4016802 B2 JP4016802 B2 JP 4016802B2
Authority
JP
Japan
Prior art keywords
binding wire
binding
pin
hole
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2002312187A
Other languages
Japanese (ja)
Other versions
JP2004142814A (en
Inventor
一郎 草刈
孝博 長岡
修 板垣
穏 横地
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Max Co Ltd
Original Assignee
Max Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Max Co Ltd filed Critical Max Co Ltd
Priority to JP2002312187A priority Critical patent/JP4016802B2/en
Publication of JP2004142814A publication Critical patent/JP2004142814A/en
Application granted granted Critical
Publication of JP4016802B2 publication Critical patent/JP4016802B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12Mounting of reinforcing inserts; Prestressing
    • E04G21/122Machines for joining reinforcing bars
    • E04G21/123Wire twisting tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Basic Packing Technique (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、鉄筋結束機に関するものであり、特に、結束線切断機構に備えたロータリーワイヤカッタの回転中心となるピン形状を改良して、結束線の引戻しが円滑に行われるようにした鉄筋結束機に関するものである。
【0002】
【従来の技術】
本出願人は、此種鉄筋結束機を既に出願しており(特願2001−230654号)、該出願を図7乃至図10に従って説明する。図7に於て、1は鉄筋結束機を示し、該鉄筋結束機1はリール(図示せず)に巻回されたワイヤ等の結束線Wを送り出す結束線送り機構(図示せず)と、該結束線Wをガイドして鉄筋S,Sに巻き回す結束線ガイド機構2と、該結束線Wを所定位置で切断する結束線切断機構3と、該結束線Wをクランプし、該結束線Wを捩って前記鉄筋S,Sを結束する結束線クランプ・捩り機構4とを備えている。
【0003】
そして、前記結束線ガイド機構2は前記鉄筋結束機1の左右側部(図に於て下側部と上側部)に配設された左右ガイド部材5,6を備え、該左ガイド部材5は、前後に延びるフレーム7の前端にくの字状の左ガイド部8が固着され、前記右ガイド部材6は前後に延びるフレーム9の前端に前記左ガイド部8と対峙する円弧形の右ガイド部10が形成されている。
【0004】
更に、前記左ガイド部8と右ガイド部10の夫々の内周面には周方向のガイド溝11,12が形成され、該ガイド溝11,12は略同心円の外周の一部を構成するように形成されている。
【0005】
又、右ガイド部10は後部の側面が切欠されて該切欠部13が形成され、該切欠部13に嵌入自在にフォーミングプレート14が配置され、該フォーミングプレート14は前記右ガイド部材6のフレーム9に設けられた軸支部15に軸支されて揺動自在に形成され、且つ、前記右ガイド部10に固設された圧縮コイルばね16によって該フォーミングプレート14の後端が前記フレーム7側に付勢されている。
【0006】
そして、前記右ガイド部材6の前記フレーム9の長手方向に摺動自在のスライドカムプレート17が設けられ、該スライドカムプレート17は長手方向に長穴18が形成され、該スライドカムプレート17が前方に摺動して該長穴18に前記フォーミングプレート14の後端部が落ち込むことにより該フォーミングプレート14が揺動するように構成されている。
【0007】
又、該フォーミングプレート14には前記ガイド溝12に前記結束線Wをガイドするためのガイド溝部19が形成され、該ガイド溝部19は前記結束線Wを導入する入り口側である上流側が拡開して形成されている。
【0008】
更に、前記結束線クランプ・捩り機構4は、前端部にクランプ部20を有し、後端部に図示されないモータ及び減速歯車機構を介して駆動される中空の駆動軸21を備え、該駆動軸21は該駆動軸21の中心部に配設されたボールネジ軸22にスプライン結合されており、該ボールネジ軸22の前端に前記クランプ部20が配置され、該クランプ部20と前記駆動軸21との中間部にスリーブ23が摺動自在に配置され、該スリーブ23の内周面に前記ボールネジ軸22と噛み合うためのボール(図示せず)が設けられている。
【0009】
そして、該スリーブ23と前記クランプ部20はカム機構を介して連結され、該スリーブ23が前方に摺動すると該クランプ部20の左右クランプ部20a,20bが夫々独立して閉じて前記結束線Wをクランプするように構成されている。
【0010】
又、前記スリーブ23の後端部には周方向に溝24が形成され、該溝24にシフタープレート25が係合しており、該シフタープレート25によって前記スライドカムプレート17を操作し、且つ、前記結束線切断機構3を操作するように構成され、更に、前記スリーブ23の後端部の前記溝24の前方近傍にフィン26が突設して形成され、該フィン26は図示しないストッパーで回転を規制され、該スリーブ23が前方に所定距離摺動すると該フィン26が前記ストッパーから外れて該スリーブ23が回転するように構成され、該スリーブ23が回転を始めると該スリーブ23と共に前記クランプ部20が回転して前記結束線Wの捩り動作が開始されるように構成されている。
【0011】
そして、前記結束線切断機構3は前記左ガイド部材5の前記フレーム7前端に設けられた前部レバー27と、該フレーム7後端に設けられた後部レバー28と該前後部レバー27,28を連結するリンク29とから成り、前記前部レバー27は該前部レバー27の側方(図7に於て紙面前方)に突設する円筒スリーブ30を有し、該円筒スリーブ30は前記フレーム7から側方(図7に於て紙面前方)に突設された図8に示すピン31に回転自在に軸支され、該ピン31は前記結束線Wを貫通させるための軸心と直交する貫通孔32が形成され、且つ、該貫通孔32は該結束線Wの供給側となる上流側端部が外方に拡径してテーパ状に形成されており、更に、前記円筒スリーブ30には該貫通孔32に連通する孔33,34が該貫通孔32よりも大に形成され、該ピン31と該円筒スリーブ30によってロータリーワイヤカッタが構成されている。
【0012】
従って、該貫通孔32に結束線Wを貫通させて前記前部レバー27を回転すると、前記ピン31回りに前記円筒スリーブ30が回転することにより、該結束線Wが切断されるように構成されている。
【0013】
又、後部レバー28は前記シフタープレート25と係合する係合部28aが形成され、該シフタープレート25によって操作されるように形成されている。
而して、2本の鉄筋S,Sを前記左右ガイド部8,10内に取り込み、前記結束線送り機構で結束線Wを前記円筒スリーブ30の孔33、前記ピン31の貫通孔32、該円筒スリーブ30の孔34、前記フォーミングプレート14のガイド溝部19、前記右ガイド部10のガイド溝12及び前記左ガイド部8のガイド溝11に送り出し、前記鉄筋S,Sの回りを所定間隔離間してループ状に巻き回し、前記結束線Wの先端部を前記右クランプ部20bに当接させて停止させる。
【0014】
次に、図9に示すごとく、前記駆動軸21の駆動により前記ボールネジ軸22を回転させて前記スリーブ23を前方に摺動させ、前記クランプ部20の右クランプ部20bを閉じて前記結束線Wの先端部をクランプし、更に、前記シフタープレート25の摺動により前記スライドカムプレート17が摺動すると、前記フォーミングプレート14の後端部が該スライドカムプレート17の長孔18に落ち込み、これによって該フォーミングプレート14は前記軸支部15を中心に揺動して、該フォーミングプレート14の前端部が前記切欠部13から外れ、前記結束線Wを開放し、この状態で、前記結束線送り機構を逆転して該結束線Wを引戻すと該結束線Wはループ径が縮小して前記鉄筋S,Sに直接接触して巻き回される。
【0015】
そして、更に、前記駆動軸21の駆動により前記ボールネジ軸22を回転させて前記スリーブ23を前方に摺動させ、前記クランプ部20の左クランプ部20aを閉じて前記結束線Wの結束用後端部となる所定位置をクランプする。
【0016】
次に、前記スリーブ23の所定距離の摺動によって前記係合部28aを揺動させて前記後部レバー28を揺動させ、前記リンク29を介して前部レバー27を回転させると、該前部レバー27の円筒スリーブ30が前記ピン31回りに回転することにより前記結束線Wを切断する。
【0017】
更に、図10に示す如く、前記スリーブ23が更に前方に摺動すると、前記フィン26がストッパーから外れて、該スリーブ23が回転を始め、該スリーブ23の回転によって前記クランプ部20が回転して前記結束線Wは捩られ、前記鉄筋S,Sが該結束線Wによって結束される。
【0018】
この時、前記結束線クランプ・捩り機構4を駆動する前記モータの回転負荷の上昇を電流検出回路(図示せず)が検出して所定の回転負荷になった時、該モータの駆動を停止させる。
【0019】
そして、捩り完了後に該モータが逆転駆動されて前記結束線クランプ・捩り機構4が初期位置に戻り、前記クランプ部20が開いて前記結束線Wを開放すると共に、前記結束線切断機構3と前記結束線ガイド機構2も初期状態に復帰する。
【0020】
【発明が解決しようとする課題】
上記鉄筋結束機は、鉄筋を左右ガイド部内に取り込み、結束線送り機構で結束線を送り出して鉄筋を所定間隔離間するループ状に巻き回し、次に、前記結束線送り機構を逆転して該結束線を引戻してループ径を縮小し、該結束線を該鉄筋に直接巻回した後、結束線切断機構で結束線を切断し、更に、結束線クランプ・捩り機構で結束線を捩って前記鉄筋を結束するように構成されている。
【0021】
而して、前記結束線送り機構は前述したように結束線を引戻してループ径を縮小し鉄筋を直接巻回するため、鉄筋径に応じた適切な結束線の長さで鉄筋を結束し、結束仕上がりが向上すると共に、結束線の無駄を削減できる利点がある。
【0022】
然しながら、前記鉄筋結束機は結束線切断機構に備えられたロータリーワイヤカッタを構成するピンの貫通孔の下流側端部が拡径されていないため、前述の結束線の引戻し時に該結束線が該貫通孔の下流側端部でしごかれ、該結束線の被覆及び結束線の心線を損傷したり、削りかすが発生し、又は、該結束線の引戻し抵抗が発生し、引戻し性能が悪くなるという問題があった。
【0023】
そこで、鉄筋に巻回させた結束線の引戻し機能を備えた鉄筋結束機に於て、結束線を損傷することなく、結束線の引戻しを円滑に行うために解決すべき技術的課題が生じてくるのであり、本発明はこの課題を解決することを目的とする。
【0024】
【課題を解決するための手段】
本発明は上記目的を達成するために提案されたものであり、結束線送り機構により結束線を送り出して鉄筋の周囲にループを形成し、結束線クランプ・捩り機構により該結束線の先端をクランプし、該結束線送り機構を逆転駆動して該結束線を引戻して該鉄筋に巻回し、該結束線クランプ・捩り機構により該結束線の結束用後端部をクランプし、結束線切断機構によって該結束線を所定長さで切断した後、該結束線クランプ・捩り機構を回転駆動して該結束線を捩ることにより該鉄筋を結束する鉄筋結束機であって、前記結束線切断機構はピンとカッタ部材が設けられ、該ピンには該ピンの軸心と直交する前記結束線を貫通させる貫通孔が開穿され、前記カッタ部材にも該ピンの貫通孔に連通する孔が形成され、該ピンとカッタ部材の連通する孔の位置がずれる方向に相対的に移動することにより前記結束線を切断するように構成された鉄筋結束機に於て、前記ピンに形成する貫通孔は両端部が外方に拡開するテーパ状に形成されている鉄筋結束機、
及び、上記ピンに開穿された貫通孔は該貫通孔のテーパ状に形成された両端部が互いに略対称に形成されている鉄筋結束機を提供するものである。
【0025】
【発明の実施の形態】
以下、本発明の一実施の形態を図1乃至図6に従って詳述する。図1に於て、41は鉄筋結束機を示し、該鉄筋結束機41はリール(図示せず)に巻回されたワイヤ等の結束線Wを送り出す結束線送り機構(図示せず)と、該結束線Wをガイドして鉄筋S,Sに巻き回す結束線ガイド機構42と、該結束線Wを所定位置で切断する結束線切断機構43と、該結束線Wをクランプし、又は、該結束線Wを捩って前記鉄筋S,Sを結束する結束線クランプ・捩り機構44とを備えている。
【0026】
そして、前記結束線ガイド機構42は前記鉄筋結束機41の左右側部(図に於て下側部と上側部)に配設された左右ガイド部材45,46を備え、該左ガイド部材45は、前後に延びるフレーム47の前端にくの字状の左ガイド部48が固着され、前記右ガイド部材46は前後に延びるフレーム49の前端に前記左ガイド部48と対峙する円弧形の右ガイド部50が形成されている。そして、前記左ガイド部48と右ガイド部50の夫々の内周面には周方向のガイド溝51,52が形成され、該ガイド溝51,52は略同心円の外周の一部を構成するように形成されている。
【0027】
又、右ガイド部50は後部の側面が切欠されて切欠部53が形成され、該切欠部53に嵌入自在にフォーミングプレート54が配置され、該フォーミングプレート54は前記右ガイド部材46のフレーム47に突設した軸支部55に軸支されて揺動自在に形成されている。
【0028】
該フォーミングプレート54には前記ガイド溝51に前記結束線Wをガイドするためのガイド溝部56が形成され、該ガイド溝部56は前記結束線Wを導入する入り口側となる上流側が拡開して形成されている。
【0029】
更に、前記結束線クランプ・捩り機構44は、前端部にクランプ部57を有し、後端部に図示されないモータ及び減速歯車機構を介して駆動される中空の駆動軸58を備え、該駆動軸58は該駆動軸58の中心部に配設されたボールネジ軸59にスプライン結合されており、該ボールネジ軸59の前端に前記クランプ部57が配置され、該クランプ部57と前記駆動軸58との中間部にスリーブ60が配置され、該スリーブ60の内周面に前記ボールネジ軸59と噛み合うためのボール(図示せず)が設けられている。
【0030】
そして、該スリーブ60と前記クランプ部57は図示しないカム機構を介して連結され、該スリーブ60が前方に摺動すると該クランプ部57の左右クランプ部57a,57bが夫々独立して閉じて前記結束線Wをクランプするように構成されている。
【0031】
又、前記スリーブ60の後端部には周方向に溝61が形成され、該溝61にシフタープレート62が係合しており、該シフタープレート62によって図示しない連結機構を介して前記フォーミングプレート54を操作し、且つ、前記結束線切断機構43を操作するように構成され、更に、前記スリーブ60の後端部の前記溝61の前方近傍にフィン63が突設して形成され、該フィン63は図示しないストッパーで回転を規制され、該スリーブ63が前方に所定距離摺動すると該フィン63が前記ストッパーから外れて該スリーブ60が回転するように構成され、該スリーブ60が回転を始めると該スリーブ60と共に前記クランプ部57が回転して前記結束線Wの捩り動作が開始されるように構成されている。
【0032】
そして、前記結束線切断機構43は前記左ガイド部材45の前記フレーム47前端に設けられた前部レバー64と、該フレーム47後端に設けられた後部レバー65と該前後部レバー64,65を連結するリンク66とから成り、図2に示すごとく、前記前部レバー64は該前部レバー64の側方(図に於て紙面前方)に突設するカッタ部材である円筒スリーブ67を有し、該円筒スリーブ67は前記フレーム47から側方(図に於て紙面前方)に突設されたピン68に軸支され、該ピン68は前記結束線Wを貫通させるための軸心と直交する貫通孔69が形成されると共に、該貫通孔69は上流側端部69a(該結束線Wの供給側端部)及び下流側端部69b(該結束線Wの排出側端部)がいずれも外方に拡径してテーパ状に形成されており、且つ、該貫通孔69のテーパ状に形成された両端部69a,69bは互いに略対称に形成され、更に、前記円筒スリーブ67にも該貫通孔69に連通する孔70,71が該貫通孔69よりも大に形成され、前記ピン68と該円筒スリーブ67によってロータリーワイヤカッタが構成されている。
【0033】
従って、図3(a)に示す如く、該貫通孔69に結束線Wを貫通させて、前記前部レバー64を回転すると、同図(b)に示す如く、前記ピン68回りに前記円筒スリーブ67が回転することにより、該結束線Wは切断されるように構成されている。
【0034】
又、後部レバー65は前記シフタープレート62と係合する係合部65aが形成され、該シフタープレート62によって操作されるように形成されている。
而して、2本の鉄筋S,Sを前記左右ガイド部48,50内に取り込み、前記結束線送り機構で結束線Wを前記円筒スリーブ67の孔70、前記ピン68の貫通孔69、該円筒スリーブ67の孔71、前記フォーミングプレート54のガイド溝部56、前記右ガイド部50のガイド溝52、及び、前記左ガイド部48のガイド溝51に送り出し、前記鉄筋S,Sの回りを所定間隔離間してループ状に巻き回し、該結束線Wの先端部を前記右クランプ部57bに当接させて停止させる。
【0035】
次に、前記駆動軸58の駆動により前記ボールネジ軸59を回転させて前記スリーブ60を前方に摺動させ、前記クランプ部57の右クランプ部57bを閉じて前記結束線Wの先端部をクランプする。
【0036】
更に、前記スリーブ60の前方への摺動により前記シフタープレート62が摺動すると、図示しない連結機構を介して前記フォーミングプレート54が前記軸支部55回りに回転し、該フォーミングプレート54が前記切欠部53から外れて前記結束線Wを開放し、この状態で前記結束線送り機構を逆転して該結束線Wを引戻すと該結束線Wはループ径が縮小し前記鉄筋S,Sに直接接触して巻き回される。
【0037】
そして、更に、前記駆動軸58の駆動により前記ボールネジ軸59が回転して前記スリーブ60が前方に摺動すると、前記クランプ部57の左クランプ部57aが閉じて前記結束線Wの結束用後端部となる所定位置をクランプする。
【0038】
又、図4(a)〜(d)に順次示す如く、前記スリーブ60が所定距離摺動すると、前記係合部65aを揺動させて前記後部レバー65を揺動させ、前記リンク66を介して前部レバー64を回転させ、該前部レバー64の回転によって該前部レバー64の円筒スリーブ67が前記ピン68回りに回転することにより前記結束線Wを切断する。
【0039】
更に、前記スリーブ60が前方に摺動すると、前記フィン63がストッパーから外れて、該スリーブ63が回転を始め、該スリーブ63の回転によって前記クランプ部57が回転して前記結束線Wは捩られ、前記鉄筋S,Sが該結束線Wによって結束される。この時、前記結束線クランプ・捩り機構44を駆動する前記モータの回転負荷の上昇を電流検出回路(図示せず)が検出して所定の回転負荷になった時、該モータの駆動を停止させる。
【0040】
そして、捩り完了後に該モータが逆転駆動されて前記結束線クランプ・捩り機構44が初期位置に戻り、前記クランプ部57が開いて前記結束線Wを開放すると共に、前記結束線切断機構43と前記結束線ガイド機構42も初期状態に復帰する。
【0041】
斯くして、前記鉄筋結束機51は前記結束線切断機構43のロータリーワイヤカッタを構成する前記ピン68に貫通孔69が形成されると共に、該貫通孔69は上流側端部69a(該結束線Wの供給側端部)及び下流側端部69b(該結束線Wの排出側端部)がいずれも外方に拡径してテーパ状に形成されているため、前記結束線Wの引戻し時に、従来例の如く、該結束線Wが貫通孔の下流側端部でしごかれ、該結束線の被覆及び結束線の心線を損傷し、削りかすが発生したり、又は、該結束線の引戻し抵抗が発生し、引戻し性能が悪くなるという問題がなくなり、結束線の被覆及び心線を損傷することなく、従って、結束線Wの被覆の削りかすを発生させることもなく、結束線の引戻しを円滑に行うことができる。
【0042】
更に、前述の如くテーパ状に形成された前記貫通孔69は該貫通孔69のテーパ状に形成された両端部69a,69bが互いに略対称に形成されているため、前記ピンの組み付け時に向きを一方向に限定する必要がなく、組み付け性能を高めることができると共に、該ピンのカット性能が悪化した時、該ピンを逆向きに組み直すことができ、該ピンの耐久性を2倍に向上させることができる。
【0043】
又、前記結束線切断機構43に備えられた前記ピン68と、前記円筒スリーブ67の組合せによる切断方式は、該方式に限定されるべきではなく、同様の効果を奏する他の方式を用いることも可能である。
【0044】
例えば、図5に示す如く、ピン72の軸心方向に貫通孔73を開穿し、該貫通孔73の両端部を対称的に外方に向かって拡開させてテーパ状に形成し、一方、径方向に孔74が開穿されたロータリカッタ75が前記ピン72の下流側端部に接して回転自在に設けられ、該ロータリカッタ75の回転により該ロータリカッタ75の孔74が前記ピン72の貫通孔73の下流側端部に連通自在に設けられた切断方式も考えられる。
【0045】
そして、該切断方式に於ては、前記ピン72の貫通孔73及び前記ロータリカッタ75の孔74に図示しない結束線を通し、該ロータリカッタ75を該ロータリカッタ75の軸心回りに矢印の如く回転させると該結束線が切断される。
【0046】
該切断方式に於ける該ピン72も前記結束線切断機構43のピン68と同様の効果が期待できる。
更に、図6(a)に示す如く、ピン76の軸心方向に貫通孔77を開穿し、該貫通孔77の両端部を対称的に外方に向かって拡開してテーパ状に形成し、一方、一方向に孔78が開穿されたスライドカッタ79が前記ピン76の下流側端部に接して摺動自在に設けられ、該スライドカッタ79の孔78が前記ピン76の貫通孔77の下流側端部に連通自在に設けられた切断方式も考えられる。
【0047】
そして、該切断方式は図6(b)に示す如く、前記ピン76の貫通孔77及び前記スライドカッタ79の孔78に結束線Wを通し、該スライドカッタ79を該ピン76に対してずらすように摺動させることにより該結束線Wが切断される。
【0048】
該方式に於ける該ピン76も前記結束線切断機構43のピン68と同様の効果が期待できる。
尚、本発明は、本発明の精神を逸脱しない限り種々の改変を為すことができ、そして、本発明が該改変されたものに及ぶことは当然である。
【0049】
【発明の効果】
本発明は上記一実施の形態に詳述したように、請求項1記載の発明は、ピンとカッタ部材の連通する孔の位置がずれる方向に相対的に移動することにより結束線を切断するように構成された結束線切断機構を備えた鉄筋結束機に於て、前記ピンに形成する貫通孔は両端部が外方に拡開するテーパ状に形成されているので、結束線の引戻し時に該結束線が従来例の如く、貫通孔の下流側端部でしごかれ、該結束線の被覆及び結束線の心線を損傷し、削りかすが発生したり、又は、該結束線の引戻し抵抗が発生し、引戻し性能が悪くなるという問題がなくなり、結束線を損傷することなく、従って、結束線の被覆の削りかすが発生することもなく、結束線の引戻しを円滑に行うことができる。
【0050】
又、請求項2記載の発明は、上記ピンに開穿された貫通孔は該貫通孔のテーパ状に形成された両端部が互いに略対称に形成されているので、請求項1記載の発明の効果に加え、前記ピンの組み付け時に向きを一方向に限定する必要がなく、組み付け性能を高めることができると共に、該ピンのカット性能が悪化した時、逆向きに組み直すことができ、該ピンの耐久性を2倍に向上させることができる等、正に著大なる効果を奏する発明である。
【図面の簡単な説明】
【図1】本発明の一実施の形態を示し、鉄筋結束機の一部切欠平面図。
【図2】図1の結束線切断機構のロータリーワイヤカッタとなるピンと円筒スリーブの一部切欠平面図。
【図3】(a)、(b)図2のロータリーワイヤカッタとなるピンと円筒スリーブの作動説明図。
【図4】(a)〜(d)本発明の一実施の形態を示し、鉄筋結束機の作動説明図。
【図5】本発明の他の実施の形態を示し、ロータリカッタ方式のロータリカッタとピンの正面縦断断面図。
【図6】(a)本発明の他の実施の形態を示し、スライドカッタ方式のスライドカッタとピンの正面縦断断面図。
(b)前図(a)のスライドカッタとピンの作動説明図。
【図7】(a)従来例を示し、結束線をループ状に掛け回した状態を示す鉄筋結束機の側面図。
(b)従来例を示し、結束線をループ状に掛け回した状態を示す鉄筋結束機の一部切欠平面図。
【図8】(a)、(b)図7の結束線切断機構のロータリーワイヤカッタとなるピンと円筒スリーブの作動説明図。
【図9】(a)従来例を示し、結束線を引き戻し結束線のループ径を縮小した状態に於ける鉄筋結束機の側面図。
(b)従来例を示し、結束線を引き戻し結束線のループ径を縮小した状態を示す鉄筋結束機の一部切欠平面図。
【図10】(a)従来例を示し、結束線を鉄筋に結束した状態に於ける鉄筋結束機の側面図。
(b)従来例を示し、結束線を鉄筋に結束した状態を示す鉄筋結束機の一部切欠平面図。
【符号の説明】
41 鉄筋結束機
44 結束線クランプ・捩り機構
43 結束線切断機構
67 円筒スリーブ
68 ピン
69 貫通孔
70,71 孔
S 鉄筋
W 結束線
[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a reinforcing bar binding machine, and in particular, a reinforcing bar binding in which a pin shape serving as a rotation center of a rotary wire cutter provided in a binding wire cutting mechanism is improved so that the binding wire is smoothly pulled back. Related to the machine.
[0002]
[Prior art]
The present applicant has already applied for this kind of reinforcing bar binding machine (Japanese Patent Application No. 2001-230654), and the application will be described with reference to FIGS. In FIG. 7, reference numeral 1 denotes a reinforcing bar binding machine, and the reinforcing bar binding machine 1 is a binding wire feeding mechanism (not shown) for sending out a binding wire W such as a wire wound around a reel (not shown); The binding wire guide mechanism 2 for guiding the binding wire W and winding it around the reinforcing bars S, S, the binding wire cutting mechanism 3 for cutting the binding wire W at a predetermined position, and clamping the binding wire W, the binding wire A binding wire clamp / twist mechanism 4 for twisting W to bind the reinforcing bars S, S is provided.
[0003]
The binding wire guide mechanism 2 includes left and right guide members 5 and 6 disposed on the left and right side portions (lower side portion and upper side portion in the figure) of the reinforcing bar binding machine 1, and the left guide member 5 is A dog-shaped left guide portion 8 is fixed to the front end of the frame 7 extending in the front-rear direction, and the right guide member 6 is an arc-shaped right guide facing the left guide portion 8 at the front end of the frame 9 extending in the front-rear direction. Part 10 is formed.
[0004]
Further, circumferential guide grooves 11 and 12 are formed on the inner peripheral surfaces of the left guide portion 8 and the right guide portion 10, respectively, so that the guide grooves 11 and 12 constitute a part of the outer periphery of a substantially concentric circle. Is formed.
[0005]
The right guide portion 10 has a rear side notched to form the notch 13, and a forming plate 14 is disposed in the notch 13 so that the forming plate 14 can be inserted into the notch 13. The forming plate 14 has a frame 9 of the right guide member 6. The rear end of the forming plate 14 is attached to the frame 7 side by a compression coil spring 16 that is pivotally supported by a shaft support portion 15 provided on the right guide portion 10 and that is fixed to the right guide portion 10. It is energized.
[0006]
A slide cam plate 17 slidable in the longitudinal direction of the frame 9 of the right guide member 6 is provided. The slide cam plate 17 is formed with a long hole 18 in the longitudinal direction, and the slide cam plate 17 is moved forward. When the rear end of the forming plate 14 falls into the elongated hole 18, the forming plate 14 swings.
[0007]
Further, the forming plate 14 is formed with a guide groove portion 19 for guiding the binding wire W in the guide groove 12, and the guide groove portion 19 expands on the upstream side which is the entrance side for introducing the binding wire W. Is formed.
[0008]
Further, the binding wire clamp / twist mechanism 4 includes a hollow drive shaft 21 having a clamp portion 20 at the front end portion and driven via a motor and a reduction gear mechanism (not shown) at the rear end portion. 21 is splined to a ball screw shaft 22 disposed at the center of the drive shaft 21, the clamp portion 20 is disposed at the front end of the ball screw shaft 22, and the clamp portion 20 and the drive shaft 21 A sleeve 23 is slidably disposed at an intermediate portion, and a ball (not shown) for meshing with the ball screw shaft 22 is provided on the inner peripheral surface of the sleeve 23.
[0009]
The sleeve 23 and the clamp portion 20 are connected via a cam mechanism. When the sleeve 23 slides forward, the left and right clamp portions 20a and 20b of the clamp portion 20 are independently closed, and the binding wire W Is configured to clamp.
[0010]
Further, a groove 24 is formed in the circumferential direction at the rear end portion of the sleeve 23, and a shifter plate 25 is engaged with the groove 24. The slide cam plate 17 is operated by the shifter plate 25, and The binding wire cutting mechanism 3 is configured to be operated, and further, a fin 26 is formed in the vicinity of the front of the groove 24 at the rear end of the sleeve 23, and the fin 26 is rotated by a stopper (not shown). When the sleeve 23 slides forward by a predetermined distance, the fin 26 is removed from the stopper and the sleeve 23 rotates. When the sleeve 23 starts rotating, the clamp portion together with the sleeve 23 is configured. 20 is rotated so that the twisting operation of the binding wire W is started.
[0011]
The binding wire cutting mechanism 3 includes a front lever 27 provided at the front end of the frame 7 of the left guide member 5, a rear lever 28 provided at the rear end of the frame 7, and the front and rear levers 27, 28. The front lever 27 has a cylindrical sleeve 30 protruding from the side of the front lever 27 (front side in FIG. 7). The cylindrical sleeve 30 is connected to the frame 7. 8 is rotatably supported by a pin 31 shown in FIG. 8 that protrudes laterally (frontward in FIG. 7), and the pin 31 penetrates perpendicularly to the axis for passing the binding wire W. A hole 32 is formed, and the through-hole 32 is formed in a tapered shape with the upstream end serving as the supply side of the binding wire W expanding outwardly. Further, the cylindrical sleeve 30 has a tapered shape. Holes 33 and 34 communicating with the through hole 32 are connected to the through hole 32. Also formed large, rotary wire cutter is formed by the pin 31 and the cylindrical sleeve 30.
[0012]
Therefore, when the front lever 27 is rotated by passing the binding wire W through the through hole 32, the cylindrical sleeve 30 is rotated around the pin 31, so that the binding wire W is cut. ing.
[0013]
The rear lever 28 is formed with an engaging portion 28 a that engages with the shifter plate 25 and is operated by the shifter plate 25.
Thus, the two reinforcing bars S and S are taken into the left and right guide portions 8 and 10, and the binding wire W is transferred by the binding wire feeding mechanism to the hole 33 of the cylindrical sleeve 30, the through hole 32 of the pin 31, It feeds into the hole 34 of the cylindrical sleeve 30, the guide groove portion 19 of the forming plate 14, the guide groove 12 of the right guide portion 10 and the guide groove 11 of the left guide portion 8, and the rebars S and S are spaced apart by a predetermined distance. Then, it is wound in a loop shape, and the distal end portion of the binding wire W is brought into contact with the right clamp portion 20b and stopped.
[0014]
Next, as shown in FIG. 9, the ball screw shaft 22 is rotated by driving the drive shaft 21 to slide the sleeve 23 forward, the right clamp portion 20b of the clamp portion 20 is closed, and the binding wire W When the slide cam plate 17 slides due to the sliding of the shifter plate 25, the rear end portion of the forming plate 14 falls into the long hole 18 of the slide cam plate 17, thereby The forming plate 14 swings about the shaft support portion 15, and the front end portion of the forming plate 14 is detached from the notch portion 13 to release the binding wire W. In this state, the binding wire feeding mechanism is When the binding wire W is reversed and pulled back, the binding wire W is wound in contact with the reinforcing bars S and S with the loop diameter reduced.
[0015]
Further, by driving the drive shaft 21, the ball screw shaft 22 is rotated to slide the sleeve 23 forward, the left clamp portion 20a of the clamp portion 20 is closed, and the binding rear end of the binding wire W is bound. The predetermined position which becomes a part is clamped.
[0016]
Next, when the sleeve 23 is slid by a predetermined distance to swing the engaging portion 28a to swing the rear lever 28 and rotate the front lever 27 through the link 29, the front portion When the cylindrical sleeve 30 of the lever 27 rotates around the pin 31, the binding wire W is cut.
[0017]
Further, as shown in FIG. 10, when the sleeve 23 slides further forward, the fin 26 is detached from the stopper, the sleeve 23 starts to rotate, and the clamp portion 20 is rotated by the rotation of the sleeve 23. The binding wire W is twisted, and the reinforcing bars S, S are bound by the binding wire W.
[0018]
At this time, when a current detection circuit (not shown) detects an increase in the rotational load of the motor that drives the binding wire clamp / twist mechanism 4, the motor is stopped when a predetermined rotational load is reached. .
[0019]
Then, after the twisting is completed, the motor is driven in reverse to return the binding wire clamp / twist mechanism 4 to the initial position, the clamp portion 20 is opened to open the binding wire W, and the binding wire cutting mechanism 3 and the The binding wire guide mechanism 2 also returns to the initial state.
[0020]
[Problems to be solved by the invention]
The reinforcing bar binding machine takes in the reinforcing bars into the left and right guide portions, feeds the binding wires by the binding wire feed mechanism, winds the reinforcing bars in a loop shape spaced apart by a predetermined interval, and then reverses the binding wire feed mechanism to bind the binding wires. Pull the wire back to reduce the loop diameter, wind the binding wire directly around the rebar, cut the binding wire with the binding wire cutting mechanism, and twist the binding wire with the binding wire clamp / twist mechanism to It is configured to bind the reinforcing bars.
[0021]
Thus, as described above, the binding wire feeding mechanism pulls back the binding wire to reduce the loop diameter and directly wind the rebar, so that the rebar is bound with an appropriate length of the binding wire according to the rebar diameter, There are advantages that the binding finish is improved and that waste of the binding wire can be reduced.
[0022]
However, since the downstream end portion of the through hole of the pin constituting the rotary wire cutter provided in the binding wire cutting mechanism is not enlarged in the reinforcing bar binding machine, the binding wire is not retracted when the binding wire is pulled back. It is squeezed at the downstream end of the through hole, and the covering of the binding wire and the core wire of the binding wire are damaged or scraped, or the pulling resistance of the binding wire is generated and the pull back performance is deteriorated. There was a problem.
[0023]
Therefore, in the reinforcing bar binding machine equipped with the function of pulling back the binding wire wound around the reinforcing bar, there arises a technical problem to be solved in order to smoothly return the binding wire without damaging the binding wire. Therefore, an object of the present invention is to solve this problem.
[0024]
[Means for Solving the Problems]
The present invention has been proposed in order to achieve the above object. The binding wire is fed out by the binding wire feeding mechanism to form a loop around the reinforcing bar, and the binding wire clamp / torsion mechanism clamps the tip of the binding wire. The binding wire feed mechanism is driven in reverse, the binding wire is pulled back and wound around the reinforcing bar, the binding wire clamping / twisting mechanism clamps the binding wire rear end, and the binding wire cutting mechanism A rebar binding machine that binds the reinforcing bars by rotating the binding wire clamp / twist mechanism and twisting the binding wire after cutting the binding wire by a predetermined length, and the binding wire cutting mechanism includes a pin and A cutter member is provided, and the pin has a through hole penetrating the binding wire orthogonal to the axis of the pin, and the cutter member is also formed with a hole communicating with the through hole of the pin. Communication between pin and cutter member In the reinforcing bar binding machine configured to cut the binding wire by relatively moving in the direction in which the position of the hole is shifted, the through hole formed in the pin is a taper in which both ends are expanded outward. Reinforcing bar binding machine,
And the through-hole opened by the said pin provides the reinforcing bar binding machine by which the both ends formed in the taper shape of this through-hole are formed substantially symmetrically with respect to each other.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. In FIG. 1, reference numeral 41 denotes a reinforcing bar binding machine, and the reinforcing bar binding machine 41 is a binding wire feeding mechanism (not shown) that sends out a binding wire W such as a wire wound around a reel (not shown); A binding wire guide mechanism 42 that guides the binding wire W and winds it around the reinforcing bars S, S, a binding wire cutting mechanism 43 that cuts the binding wire W at a predetermined position, and clamps the binding wire W, or A binding wire clamp / twist mechanism 44 that binds the reinforcing bars S by twisting the binding wire W is provided.
[0026]
The binding wire guide mechanism 42 includes left and right guide members 45 and 46 disposed on the left and right side portions (the lower side portion and the upper side portion in the figure) of the reinforcing bar binding machine 41, and the left guide member 45 is A dog-shaped left guide portion 48 is fixed to the front end of the frame 47 extending in the front-rear direction, and the right guide member 46 is an arc-shaped right guide facing the left guide portion 48 at the front end of the frame 49 extending in the front-rear direction. Part 50 is formed. Further, circumferential guide grooves 51 and 52 are formed on the inner peripheral surfaces of the left guide portion 48 and the right guide portion 50, respectively, and the guide grooves 51 and 52 constitute a part of the outer periphery of a substantially concentric circle. Is formed.
[0027]
Further, the right guide portion 50 has a rear side surface cut away to form a cutout portion 53, and a forming plate 54 is disposed in the cutout portion 53 so as to be freely inserted. The forming plate 54 is attached to the frame 47 of the right guide member 46. It is pivotally supported by a projecting shaft support portion 55 and is swingable.
[0028]
The forming plate 54 is formed with a guide groove portion 56 for guiding the binding wire W in the guide groove 51, and the guide groove portion 56 is formed by expanding the upstream side as an entrance side for introducing the binding wire W. Has been.
[0029]
Further, the binding wire clamp / twist mechanism 44 has a clamp portion 57 at the front end portion, and includes a hollow drive shaft 58 driven via a motor and a reduction gear mechanism (not shown) at the rear end portion. 58 is splined to a ball screw shaft 59 disposed at the center of the drive shaft 58, the clamp portion 57 is disposed at the front end of the ball screw shaft 59, and the clamp portion 57 and the drive shaft 58 are connected to each other. A sleeve 60 is disposed at an intermediate portion, and a ball (not shown) for meshing with the ball screw shaft 59 is provided on the inner peripheral surface of the sleeve 60.
[0030]
The sleeve 60 and the clamp portion 57 are connected via a cam mechanism (not shown). When the sleeve 60 slides forward, the left and right clamp portions 57a and 57b of the clamp portion 57 are closed independently, and the binding is performed. The line W is configured to be clamped.
[0031]
Further, a groove 61 is formed in the circumferential direction at the rear end portion of the sleeve 60, and a shifter plate 62 is engaged with the groove 61. The forming plate 54 is connected to the shifter plate 62 via a coupling mechanism (not shown). , And the binding wire cutting mechanism 43 is further operated. Further, a fin 63 is formed in the vicinity of the front of the groove 61 at the rear end of the sleeve 60, and the fin 63 The rotation is restricted by a stopper (not shown), and when the sleeve 63 slides forward a predetermined distance, the fin 63 is detached from the stopper and the sleeve 60 rotates, and when the sleeve 60 starts rotating, The clamp portion 57 is rotated together with the sleeve 60 so that the twisting operation of the binding wire W is started.
[0032]
The binding wire cutting mechanism 43 includes a front lever 64 provided at the front end of the frame 47 of the left guide member 45, a rear lever 65 provided at the rear end of the frame 47, and the front and rear levers 64, 65. As shown in FIG. 2, the front lever 64 has a cylindrical sleeve 67 that is a cutter member protruding from the side of the front lever 64 (front side in the drawing in the drawing). The cylindrical sleeve 67 is pivotally supported by a pin 68 protruding laterally from the frame 47 (front side in the drawing in the drawing), and the pin 68 is orthogonal to the axis for allowing the binding wire W to pass therethrough. A through hole 69 is formed, and the through hole 69 has an upstream end 69a (a supply end of the binding wire W) and a downstream end 69b (a discharge end of the binding wire W). The outer diameter is increased and tapered. Further, both end portions 69a and 69b formed in a tapered shape of the through hole 69 are formed substantially symmetrical to each other, and the cylindrical sleeve 67 has holes 70 and 71 communicating with the through hole 69. 69, and a rotary wire cutter is constituted by the pin 68 and the cylindrical sleeve 67.
[0033]
Accordingly, as shown in FIG. 3 (a), when the binding lever W is passed through the through-hole 69 and the front lever 64 is rotated, the cylindrical sleeve is rotated around the pin 68 as shown in FIG. 3 (b). The binding wire W is cut when the 67 rotates.
[0034]
Further, the rear lever 65 is formed with an engaging portion 65 a that engages with the shifter plate 62 and is operated by the shifter plate 62.
Thus, the two reinforcing bars S, S are taken into the left and right guide portions 48, 50, and the binding wire W is transferred by the binding wire feeding mechanism to the hole 70 of the cylindrical sleeve 67, the through hole 69 of the pin 68, It feeds into the hole 71 of the cylindrical sleeve 67, the guide groove portion 56 of the forming plate 54, the guide groove 52 of the right guide portion 50, and the guide groove 51 of the left guide portion 48, and around the reinforcing bars S, S at a predetermined interval. They are separated and wound in a loop shape, and the front end portion of the binding wire W is brought into contact with the right clamp portion 57b to be stopped.
[0035]
Next, the ball screw shaft 59 is rotated by driving the drive shaft 58 to slide the sleeve 60 forward, the right clamp portion 57b of the clamp portion 57 is closed, and the tip end portion of the binding wire W is clamped. .
[0036]
Further, when the shifter plate 62 slides due to the sliding of the sleeve 60 forward, the forming plate 54 rotates around the shaft support portion 55 via a coupling mechanism (not shown), and the forming plate 54 is moved to the notch portion. 53, the binding wire W is released, and in this state, the binding wire feed mechanism is reversed and the binding wire W is pulled back to reduce the loop diameter of the binding wire W and directly contact the reinforcing bars S, S. Then it is wound.
[0037]
Further, when the ball screw shaft 59 is rotated by the drive of the drive shaft 58 and the sleeve 60 slides forward, the left clamp portion 57a of the clamp portion 57 is closed and the binding rear end of the binding wire W is bound. The predetermined position which becomes a part is clamped.
[0038]
4A to 4D, when the sleeve 60 slides a predetermined distance, the engaging portion 65a is swung to swing the rear lever 65, and the link 66 is interposed. Then, the front lever 64 is rotated, and by rotating the front lever 64, the cylindrical sleeve 67 of the front lever 64 rotates around the pin 68, thereby cutting the binding wire W.
[0039]
Further, when the sleeve 60 slides forward, the fin 63 is detached from the stopper, the sleeve 63 starts to rotate, and the clamp portion 57 is rotated by the rotation of the sleeve 63 and the binding wire W is twisted. The rebars S are bound by the binding wire W. At this time, when a current detection circuit (not shown) detects an increase in the rotational load of the motor that drives the binding wire clamp / twist mechanism 44 and the predetermined rotational load is reached, the driving of the motor is stopped. .
[0040]
Then, after the twisting is completed, the motor is driven in reverse to return the binding wire clamp / twist mechanism 44 to the initial position, the clamp portion 57 is opened to open the binding wire W, and the binding wire cutting mechanism 43 and the The binding wire guide mechanism 42 also returns to the initial state.
[0041]
Thus, in the reinforcing bar binding machine 51, a through hole 69 is formed in the pin 68 constituting the rotary wire cutter of the binding wire cutting mechanism 43, and the through hole 69 has an upstream end 69a (the binding wire). (W supply side end portion) and downstream end portion 69b (the discharge side end portion of the binding wire W) are both outwardly expanded in diameter and formed into a taper shape, so that when the binding wire W is pulled back, As in the conventional example, the binding wire W is squeezed at the downstream end of the through hole, and the binding wire covering and the binding wire core wire are damaged, and shavings are generated, or the binding wire The pulling resistance is generated, and the problem that the pulling performance is deteriorated is eliminated. The covering of the binding wire and the core wire are not damaged. Therefore, the binding wire is pulled back without causing any shavings of the covering of the binding wire W. Can be performed smoothly.
[0042]
Further, since the through hole 69 formed in a tapered shape as described above has both end portions 69a and 69b formed in a tapered shape in the through hole 69 being substantially symmetrical with each other, the direction of the through hole 69 when the pin is assembled is changed. There is no need to limit to one direction, the assembly performance can be improved, and when the cutting performance of the pin deteriorates, the pin can be reassembled in the opposite direction, and the durability of the pin is doubled. be able to.
[0043]
Further, the cutting method by the combination of the pin 68 provided in the binding wire cutting mechanism 43 and the cylindrical sleeve 67 should not be limited to this method, and other methods that have the same effect may be used. Is possible.
[0044]
For example, as shown in FIG. 5, a through-hole 73 is opened in the axial direction of the pin 72, and both end portions of the through-hole 73 are symmetrically expanded outward to form a tapered shape. A rotary cutter 75 having a hole 74 in the radial direction is rotatably provided in contact with the downstream end portion of the pin 72, and the hole 74 of the rotary cutter 75 is rotated by the rotation of the rotary cutter 75. A cutting method provided to communicate with the downstream end of the through-hole 73 is also conceivable.
[0045]
In this cutting method, a binding wire (not shown) is passed through the through hole 73 of the pin 72 and the hole 74 of the rotary cutter 75, and the rotary cutter 75 is moved around the axis of the rotary cutter 75 as shown by an arrow. When rotated, the binding wire is cut.
[0046]
The pin 72 in the cutting method can be expected to have the same effect as the pin 68 of the binding wire cutting mechanism 43.
Further, as shown in FIG. 6 (a), a through hole 77 is opened in the axial direction of the pin 76, and both end portions of the through hole 77 are symmetrically expanded outward to form a taper shape. On the other hand, a slide cutter 79 having a hole 78 opened in one direction is slidably provided in contact with the downstream end of the pin 76, and the hole 78 of the slide cutter 79 is a through hole of the pin 76. A cutting method is also conceivable in which the downstream end of 77 is provided to be freely communicated.
[0047]
6 (b), the cutting wire W is passed through the through hole 77 of the pin 76 and the hole 78 of the slide cutter 79 so as to shift the slide cutter 79 with respect to the pin 76. The binding wire W is cut by sliding it to the right.
[0048]
The pin 76 in the system can be expected to have the same effect as the pin 68 of the binding wire cutting mechanism 43.
It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.
[0049]
【The invention's effect】
As described in detail in the above embodiment, the invention according to claim 1 is configured to cut the binding wire by moving relatively in the direction in which the position of the hole communicating with the pin and the cutter member is shifted. In the reinforcing bar binding machine provided with the binding wire cutting mechanism, the through hole formed in the pin is formed in a tapered shape whose both ends are expanded outward, so that the binding wire is pulled when the binding wire is pulled back. The wire is squeezed at the downstream end of the through-hole as in the conventional example, and the binding wire covering and the binding wire core wire are damaged, causing shavings or pulling back resistance of the binding wire. Then, there is no problem that the pull back performance is deteriorated, the binding wire is not damaged, and therefore, the binding wire can be smoothly pulled back without any shaving of the covering of the binding wire.
[0050]
Further, in the invention described in claim 2, since the through hole opened in the pin has both end portions formed in a tapered shape of the through hole formed substantially symmetrical with each other, the invention described in claim 1 is provided. In addition to the effect, it is not necessary to limit the direction to one direction when assembling the pin, so that the assembling performance can be improved, and when the cutting performance of the pin deteriorates, it can be reassembled in the opposite direction, This is an invention that has a significant effect, such as being able to improve durability twice.
[Brief description of the drawings]
FIG. 1 is a partially cutaway plan view of a reinforcing bar binding machine according to an embodiment of the present invention.
2 is a partially cut-away plan view of a pin and a cylindrical sleeve that serve as a rotary wire cutter of the binding wire cutting mechanism of FIG. 1;
3A and 3B are operation explanatory views of a pin and a cylindrical sleeve which are the rotary wire cutter of FIG. 2;
FIGS. 4A to 4D are diagrams for explaining the operation of the reinforcing bar binding machine according to the embodiment of the present invention.
FIG. 5 is a front longitudinal sectional view of a rotary cutter of a rotary cutter type and a pin, showing another embodiment of the present invention.
FIG. 6A is a front longitudinal sectional view of a slide cutter type slide cutter and a pin, showing another embodiment of the present invention.
(B) Operation | movement explanatory drawing of the slide cutter and pin of the front figure (a).
FIG. 7A is a side view of a reinforcing bar binding machine showing a conventional example and showing a state where binding wires are looped around.
(B) Partially cutaway plan view of a reinforcing bar binding machine showing a state in which a binding wire is looped around in a conventional example.
FIGS. 8A and 8B are operation explanatory views of a pin and a cylindrical sleeve which are rotary wire cutters of the binding wire cutting mechanism of FIG. 7;
FIG. 9A is a side view of a reinforcing bar binding machine in a state in which the binding wire is pulled back and the loop diameter of the binding wire is reduced, showing a conventional example.
(B) Partial cutaway plan view of a reinforcing bar binding machine showing a conventional example and showing a state in which the binding wire is pulled back and the loop diameter of the binding wire is reduced.
FIG. 10A is a side view of a reinforcing bar binding machine in a state where a binding wire is bound to a reinforcing bar, showing a conventional example.
(B) Partially cutaway plan view of a reinforcing bar binding machine showing a conventional example and showing a state where binding wires are bound to a reinforcing bar.
[Explanation of symbols]
41 Reinforcing Bar Binding Machine 44 Binding Wire Clamping / Torsion Mechanism 43 Binding Wire Cutting Mechanism 67 Cylindrical Sleeve 68 Pin 69 Through Hole 70, 71 Hole S Reinforcing Bar W Binding Wire

Claims (2)

結束線送り機構により結束線を送り出して鉄筋の周囲にループを形成し、結束線クランプ・捩り機構により該結束線の先端をクランプし、該結束線送り機構を逆転駆動して該結束線を引戻して該鉄筋に巻回し、該結束線クランプ・捩り機構により該結束線の結束用後端部をクランプし、結束線切断機構によって該結束線を所定長さで切断した後、該結束線クランプ・捩り機構を回転駆動して該結束線を捩ることにより該鉄筋を結束する鉄筋結束機であって、前記結束線切断機構はピンとカッタ部材が設けられ、該ピンには該ピンの軸心と直交する前記結束線を貫通させる貫通孔が開穿され、前記カッタ部材にも該ピンの貫通孔に連通する孔が形成され、該ピンとカッタ部材の連通する孔の位置がずれる方向に相対的に移動することにより前記結束線を切断するように構成された鉄筋結束機に於て、前記ピンに形成する貫通孔は両端部が外方に拡開するテーパ状に形成されていることを特徴とする鉄筋結束機。The binding wire is fed out by the binding wire feed mechanism to form a loop around the reinforcing bar, the tip of the binding wire is clamped by the binding wire clamp / torsion mechanism, and the binding wire feed mechanism is driven in reverse to retract the binding wire. The binding wire clamp / twisting mechanism clamps the binding rear end of the binding wire, and the binding wire cutting mechanism cuts the binding wire at a predetermined length. A rebar binding machine that binds the rebar by rotating the twisting mechanism to twist the binding wire, wherein the binding wire cutting mechanism is provided with a pin and a cutter member, and the pin is orthogonal to the axis of the pin A through hole that penetrates the binding wire is formed, and a hole that communicates with the through hole of the pin is formed in the cutter member, and the position of the hole that communicates with the pin and the cutter member moves relative to each other. By At a configured reinforcing bar binding machine to cut wire bundle, the reinforcing bar binding machine through hole formed in the pin, characterized in that it is formed in a tapered shape in which both end portions are flared outwardly. 上記ピンに開穿された貫通孔は該貫通孔のテーパ状に形成された両端部が互いに略対称に形成されていることを特徴とする請求項1記載の鉄筋結束機。2. The reinforcing bar binding machine according to claim 1, wherein the through hole opened in the pin is formed so that both end portions formed in a tapered shape of the through hole are substantially symmetrical with each other.
JP2002312187A 2002-10-28 2002-10-28 Rebar binding machine Expired - Lifetime JP4016802B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002312187A JP4016802B2 (en) 2002-10-28 2002-10-28 Rebar binding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002312187A JP4016802B2 (en) 2002-10-28 2002-10-28 Rebar binding machine

Publications (2)

Publication Number Publication Date
JP2004142814A JP2004142814A (en) 2004-05-20
JP4016802B2 true JP4016802B2 (en) 2007-12-05

Family

ID=32457152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002312187A Expired - Lifetime JP4016802B2 (en) 2002-10-28 2002-10-28 Rebar binding machine

Country Status (1)

Country Link
JP (1) JP4016802B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3342954A1 (en) 2016-12-29 2018-07-04 Max Co., Ltd. Binding machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI516415B (en) * 2008-12-12 2016-01-11 美克司股份有限公司 Reinforcing bar binding machine
CN112196300B (en) * 2020-09-11 2022-06-17 南京涵曦月自动化科技有限公司 Portable plate wall reinforcing apparatus
JP2023061806A (en) * 2021-10-20 2023-05-02 マックス株式会社 binding machine
JP2023061809A (en) * 2021-10-20 2023-05-02 マックス株式会社 binding machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3342954A1 (en) 2016-12-29 2018-07-04 Max Co., Ltd. Binding machine
US10883284B2 (en) 2016-12-29 2021-01-05 Max Co., Ltd. Binding machine
US11859396B2 (en) 2016-12-29 2024-01-02 Max Co., Ltd. Binding machine

Also Published As

Publication number Publication date
JP2004142814A (en) 2004-05-20

Similar Documents

Publication Publication Date Title
AU2002323936B2 (en) Reinforcing steel bar tying machine
JP3496463B2 (en) Wire twisting device for rebar binding machine
EP4074923B1 (en) Binding machine
JP4016802B2 (en) Rebar binding machine
TW201836932A (en) Binding machine
JP4729817B2 (en) Rebar binding machine
TWI744596B (en) Bundling machine
JP2731812B2 (en) Reinforcing mesh binding machine
JP4747463B2 (en) Rebar binding machine
JP4747452B2 (en) Rebar binding machine
JP3010353B1 (en) Reinforcing mesh binding machine
JP2022027264A (en) Binding machine
JP2003041775A (en) Reinforcement binding machine
US11787582B2 (en) Binding machine
JP4016797B2 (en) Rebar binding machine
JP4729822B2 (en) Bundling wire feed mechanism for reinforcing bar binding machine
JP4747455B2 (en) Binding wire clamp device for reinforcing bar binding machine
JP2020196508A (en) Binding machine
US20220333390A1 (en) Binding machine
JPH07275982A (en) Reinforcing bar binding machine
EP4361051A1 (en) Binding machine
EP4361378A1 (en) Binding machine
NZ787307A (en) Binding machine
JP2003034306A (en) Binding wire-clamping device of reinforcing bar-binding machine
KR20230006369A (en) Apparatus for binding with wire

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050712

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070828

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070910

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4016802

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100928

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100928

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110928

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120928

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130928

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140928

Year of fee payment: 7

EXPY Cancellation because of completion of term