JP3997131B2 - Glass plate polishing equipment - Google Patents

Glass plate polishing equipment Download PDF

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Publication number
JP3997131B2
JP3997131B2 JP2002263242A JP2002263242A JP3997131B2 JP 3997131 B2 JP3997131 B2 JP 3997131B2 JP 2002263242 A JP2002263242 A JP 2002263242A JP 2002263242 A JP2002263242 A JP 2002263242A JP 3997131 B2 JP3997131 B2 JP 3997131B2
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Prior art keywords
polishing
plate
rail
carriage
attached
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Expired - Fee Related
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JP2002263242A
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JP2004098215A (en
Inventor
勝 森山
啓志 本多
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Central Glass Co Ltd
Tosoh Quartz Corp
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Central Glass Co Ltd
Tosoh Quartz Corp
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Application filed by Central Glass Co Ltd, Tosoh Quartz Corp filed Critical Central Glass Co Ltd
Priority to JP2002263242A priority Critical patent/JP3997131B2/en
Priority to TW092122452A priority patent/TWI231780B/en
Priority to CNB031579957A priority patent/CN1259177C/en
Priority to KR1020030062893A priority patent/KR100584053B1/en
Priority to SG200305687A priority patent/SG103938A1/en
Publication of JP2004098215A publication Critical patent/JP2004098215A/en
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Publication of JP3997131B2 publication Critical patent/JP3997131B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
    • B24B7/247—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass using reciprocating grinding tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/02—Frames; Beds; Carriages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • B24B47/04—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/07—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table
    • B24B7/075—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table using a reciprocating grinding head mounted on a movable carriage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
    • B24B7/242—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass for plate glass

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、ガラス板の表面を平坦化させる研磨装置に関し、詳細には複数台並設した研磨盤上に連続的に搬入されるガラス板を順次研磨する連続研磨装置に係るものである。
【０００２】
【従来の技術】
ガラス板や基板の表面を研磨する場合には、直線的に往復動、および首振り自在な上部定盤の下面、あるいは回転運動する下部定盤の上面のいずれかの側の面にガラス板をセットし、上部定盤と下部定盤間で、ガラス板の片面、あるいは両面の研磨を行う技術が知られている。
【０００３】
例えば、ガラス板の表面を連続的に研磨させる先行技術として、ガラス板を一方向に移送するための研磨テーブルと、該研磨テーブルの上方にガラス板の移送方向に沿って配置された複数個の研磨具とを有し、各研磨具は偏心軸によって前記ガラス板に対し偏心回転運動を行い、かつ隣り合う研磨具の回転位相が反転するように設置されたガラス板の連続研磨装置がある。（特許文献１）さらに、ガラス板等の板状体の表面が同一平面内を移動するように、板状体を移動し、複数のロール状研磨パッドを、その軸線が板状体の表面に対して平行に、かつ、板状体の移動方向に対して略直交する方向に配設し、隣接するロール状研磨パッドを互いに逆方向に回転させると共に板状体に押し付けて板状体の表面を研磨することを特徴とする板状体の研磨方法、および、研磨具としてロール状研磨パッドを用いた板状体の研磨装置がある。（特許文献２）
【０００４】
【特許文献１】
特開平２−８３１５０号公報
【特許文献２】
特開平２−２５６４５４号公報
【０００５】
【発明が解決しようとする課題】
前記特開平２−８３１５０号公報、および特開平２−２５６４５４号公報記載の発明は、いずれもガラス板を連続的に研磨するものであるが、前者においては、水を吸着させた研磨布によって研磨テーブル上に載置したガラス板を固定する方法であるため、研磨圧によりテーブル上で位置ずれを起こし、複数枚配列した他のガラス板に衝接することが懸念され、また隣接ガラス板との隙間によっては複数の研磨具が乗り継ぎ時に互いに衝接を起こし易く、ガラス板の端縁部に欠け、割れを生ずる恐れがあるという問題点を有していた。
【０００６】
また、後者に記載のものは、ロール状研磨パッドを使用しているため、該パッドと板状体との接触面積が過少となり、研磨効率が低いという問題点を有していた。
【０００７】
【課題を解決するための手段】
本発明は、かかる問題点に鑑みて、シンプルな構成にして、複数台並設した研磨盤上に連続的に搬入されるガラス板を効率良く研磨でき、また、安定した仕上がり品質も確保でき、上部定盤に対するガラス板の着脱も安全確実に行え、ガラス板の搬送と共に連続研磨することを目的とするものである。
【０００８】
すなわち、本発明の研磨装置は、水平回転する研磨盤を複数台並設し、その上方部で水平方向に円弧状で無端ループ状に延設する軌道支持体の両側面に複数台の搬送キャリアを装着する搬送レールと、前記搬送キャリアへ連結着脱自在な連結手段により連結する複数台の台車を装着する走行レールとを添着し、前記走行レールに沿って走行自在な前記台車を前記走行レールに装着し、前記台車の夫々にガラス板を係着し懸吊する上下動自在なプレッシャプレートを設けた上部定盤を懸吊支持し、前記台車を、前記搬送レールに沿って研磨盤間のピッチに相当する長さだけ前進させて、研磨盤の上方部の前記上部定盤を隣接した次の研磨盤に移動させる搬送キャリヤを前記搬送レールに装着し、前記上部定盤を研磨盤に押圧かつ前記走行レールに沿って往復動せしめて研磨する複数の水平往復動手段を前記研磨盤の各々の上方部に配設している。
これにより、複数の台車を前記軌道支持体に装着した搬送キャリアで複数の研磨盤の上方部に循環走行させて、停車した台車に懸吊された上部定盤を降下させて研磨盤上に連続的に搬入されるガラス板を順次研磨するようにした。
【０００９】
さらに、前記軌道支持体および前記走行レールの途中部分において、前記軌道支持体と前記走行レールおよび前記搬送レールの途中を切断した空間部分に、前記軌道支持体、前記走行レールおよび前記搬送レールの端部または切断部に当接する可動支持体および前記可動支持体に添着した走行レールを設け、前記可動支持体に添着した走行レールの反対側より離れて立設する支柱上で前記可動支持体と直交するアームを軸支し、前記アームを回動させて前記可動支持体に懸吊された前記上部定盤を回動せしめる傾動手段を設けている。これにより、前記傾動手段が傾動状態を保持している間に前記上部定盤に係着するガラス板の着脱を行うようにした。
【００１０】
【発明の実施の形態】
本発明は、並設した複数台の研磨盤の上方部に、走行移動自在な複数台の上部定盤を設け、搬送キャリアへ連結着脱自在な台車によって上部定盤を複数台の研磨盤に順次移動させて研磨を複数台の研磨盤で連続的に行うことにより研磨効率を高め、並設した複数台の研磨盤による同一条件の複数回の研磨が各ガラス板になされることにより研磨された製品の研磨品質が一定となり、また、上部定盤の傾動手段により上部定盤に係着するガラス板の着脱作業を容易に、かつ安全に行うことができるものである。
【００１１】
以下、本発明の実施例を図面に基づいて詳細に説明する。
【００１２】
図１は上部定盤の作動を説明する一部を切欠省略した斜視図を示し、図２は傾動する上部定盤をその可動支持体の断面側から見た側面図を示し、図３は本装置の全体組立正面図を示す。
【００１３】
図３に示したように、機台１の枠内に着座する回転駆動部２上に水平回転自在な研磨盤３を設けた研磨台４を直列に紙面と直交方向に複数台配列し、該複数台の研磨台４、４、・・の両側に門形形状で立設する複数本のフレーム５、５、・・を設け、該フレームの夫々から張り出したブラケット６上に、断面四角形状の長尺の軌道支持体９を研磨台４の配列方向に水平方向に固着支持し、該軌道支持体９を前記複数本のフレーム５、５、・・間に延設した。
【００１４】
また、図１に示すように、該軌道支持体９の両側面のうち片側の側面には、上下位置に２本の走行レール７、７を平行に設け、走行レール７、７を設けた側面とは反対側の軌道支持体９の側面に搬送レール８を固着することにより軌道支持体９の両側面に搬送レール８と走行レール７、７とを添着した。
【００１５】
上下位置に平行に設けた2本の前記走行レール７、７には、従来公知の台車１０を走行レール７、７に沿って走行自在に装着させるが、該台車１０は、前記走行レール７、７を複数の車輪で挟持し、軌道支持体９の側面と台車１０の板面が平行面となるように垂下させ装着させたものである。
【００１６】
該台車１０の上端には連結手段の連結受器１１を固着し、垂下する台車１０の板面の上下位置には突出する軸受部１２、１２'を固設し、該軸受部１２、１２'は貫通する軸部１３を軸支するとともに、該軸部１３の上方側の軸受部１２に固定した固定板１４を軸部１３の両脇に設けた圧縮バネ１５、１５で支持している。
【００１７】
また、該軸部１３の下方軸端に上部定盤１８を固設し、該上部定盤１８の下面には図示しないフエルト、または多孔質ウレタン樹脂等からなるシート状の発泡体（バックパッド）を両面粘着テープ等によって貼着し、該発泡体を濡らした水の表面張力等によって被研磨材のガラス板１６を吸着するプレッシャプレート１７を設けた。
【００１８】
前記上部定盤１８は、後述するように、前記軸部１３を上部からの押圧力で圧縮バネ１５、１５を圧縮させて下降させるが、押圧力を解除した時には、圧縮バネ１５、１５の復元力により固定板１４が上部側の軸受部１２に押し付けられた状態で停止し、上部定盤１８を上下動自在に保持している。
【００１９】
さらに、前記台車１０に懸吊支持した上部定盤１８は水平方向に延設する走行レール７、７に沿って研磨盤上で微動の往復動をさせることができ、あるいは搬送キャリヤ２１によって複数の研磨台４、４、・・上を走行レール７に沿って走行通過させることができる。
【００２０】
一方、搬送レール８には正逆回転自在な搬送モーター１９を着座し、上面に連結手段の連結シリンダー２０を固着し、複数の車輪で自走する搬送キャリヤ２１を装着した。
【００２１】
該連結シリンダー２０は、そのロッドを台車１０に設けた前記連結受器１１に設けた孔に挿入し、該台車１０と搬送キャリヤ２１とを連結させると、該搬送キャリヤ２１は台車１０の前進の駆動源となり、搬送モーター１９によって駆動される搬送キャリャ２１によって下方に配置した研磨盤３、３間のピッチに相当する長さだけ、台車１０を前進させることができる。
【００２２】
連結シリンダー２０のロッドを後退させて連結受器１１より連結シリンダー２０を切離した後、搬送モーター１９を逆転させると、搬送キャリヤ２１のみが自走後退して元の位置、すなわち原点位置まで復動させることができる。
【００２３】
上部定盤１８の軸部１３の上方位置には前記軌道支持体９と平行にかつ略同一長さにわたって断面口字状の鋼製のビーム２２を水平方向に延設し、該ビーム２２には下方に配列する複数の研磨台４、４・・上の研磨盤間のピッチに合わせて水平往復動手段２３を配設している。
【００２４】
該水平往復動手段２３の構成は、ビーム２２の側面にラック２４を設け、さらにビーム２３の底面に一対の直動レール２５、２５を互いに離間して平行状態に設け、該直動レール２５、２５に遊嵌入し、直動レール２５、２５に沿って移動自在なガイド２７、２７を固着した水平往復動プレート２６を設け、該水平往復動プレート２６の下面には前記上部定盤１８の軸部１３の頂部を押圧するシリンダロッド５０の押圧シリンダー２８を懸吊状に設けている。
【００２５】
通常、前記押圧シリンダー２８のシリンダロッド５０と、前記軸部１３とは、切り離された状態にあるが、押圧シリンダ２８の作動によりシリンダロッド５０を突出させると、シリンダロッド５０の先端が軸部１３の頂部を覆うように被さって軸部１３を下方に押圧し、上部定盤１８を押圧した状態となっている。
【００２６】
水平往復動プレート２６の側端側に取付座２９を介して着座する正逆自在な水平往復動モーター３０と、該水平往復動モーター３０の軸端に軸着し前記ラック２４と噛み合うように配設したピニオン３１とを設けて、水平往復動モーター３０を回転させれば水平往復動プレート２６は直線運動となり、水平往復動手段２３は、水平往復動モーター３０を正逆回転させることにより、ビーム２２の下面に設けた直動レール２５、２５に沿って押圧シリンダー２８とシリンダロッド５０を水平往復動させることができる。
【００２７】
前記軌道支持体９は搬送レール８と走行レール７、７と共に研磨台４、４・・・上を直列的に一列に延設されており、その両端、すなわち直列に並べた該研磨台４、４、・・の最両端側には台車１０が通過可能な曲率で円弧状に無端ループ状の軌道支持体９および走行レール７、７を設けており、搬送キャリヤ２１によって台車１０を循環走行させることができる。
【００２８】
無端ループ状の軌道支持体９および走行レール７、７の途中部分において、軌道支持体９と前記走行レール７、７および搬送レール８を２箇所切断し、切断除去した短い部分の空間部分には、図２に示すように、上部定盤１８を懸吊支持する台車１０を搬送せしめる走行レール７'、７'を添着した前記軌道支持体９とは別に新たな可動支持体３３を挿入した。
【００２９】
該可動支持体３３は、該走行レール７'、７'を設けた側面とは反対側方向に離れて立設する支柱３４上で軸受（図示せず）を介して回動自在に設けられたシャフト軸３５に、ブラケット３６を介して可動支持体３３の側面とを天秤状に固着し、バランサー４０を設けたアーム３７端と、傾動手段３２、すなわち支柱３４に隣接して設けた傾動シリンダー３９とのロッド３８を連結し上下動させれば、図２に示す矢印方向にアーム３７は回動し、該アーム３７と一体な可動支持体３３の傾きにより走行レール７'、７'に台車１０を介して懸吊装着中の上部定盤１８は同時に斜め姿勢に傾き、プレッシャプレート１７の下面に貼着中のガラス板１６も斜め姿勢となり、側面より見て傾斜姿勢を表すものである。
【００３０】
以下、本発明の作動を説明する。
【００３１】
可動支持体３３の位置でプレッシャプレート１７にガラス板１６を係着して停車中の台車１０を、前もって搬送モーター１９の逆回転により最初の研磨盤３の上方部の位置から所定の位置まで後退させて停止中の搬送キャリヤ２１の位置まで移動させておく。
【００３２】
その直後、該搬送キャリヤ２１上に設けた連結シリンダー２０を作動させ、シリンダーロッドを突出させると、該シリンダーロッドは台車１０に設けた連結受器１１と嵌着して搬送キャリヤ２１と台車１０とが連結され、次に該搬送キャリヤ２１は研磨台４上で回転中の研磨盤３の上方部の所定の位置まで搬送モーター１９の正回転により台車１０と共に前進し停止し、該停止位置で連結シリンダー２０を復動すると搬送キャリヤ２１と台車１０とは分離され、該搬送キャリヤ２１は搬送モーター１９の逆回転により搬送レール８に沿って再び後退移動して前記所定の位置に停止し、次の台車１０を待機する。
【００３３】
一方、研磨盤３の上方部に停車した台車１０に懸吊された上部定盤１８は、上部のビーム２２に装着した水平往復動手段２３の作動に追動させて水平往復動および降下させるが、まず水平往復動モーター３０の正逆の回転作動により水平往復動プレート２６が直動レール２５に沿って往復動し、次に、水平往復動プレート２６の下面に懸吊状に設けている押圧シリンダー２８の作動によってシリンダロッド５０を降下させると、シリンダロッド５０の先端部は、軸部１３の上端頂部を覆うように当接し、軸部１３を押圧してバネ１５、１５で支持されている軸部１３を降下させ、該軸部１３と一体の、ガラス板１６を支持するプレッシャプレート１７を下面に設けた上部定盤を水平往復動させながら、プレッシャープレート１７を下降させて回転中の研磨盤３に圧接すれば、該ガラス板１６は研磨液の水膜を作る研磨盤３の回転と上部定盤１８の水平往復動、加えて降下押圧とによりガラス板１６の研磨盤３との当接面が研磨される。
【００３４】
回転中の研磨盤３上に上部定盤１８を押圧しつつ、かつ水平往復動モーター３０の正逆回転に追動し走行レール７、７に沿って水平往復微動させてガラス板１６を一定時間研磨すると、押圧シリンダー２８の復動と水平往復動モーター３０の停止により上部定盤１８は上昇して研磨盤３より離脱する。
【００３５】
次いで走行レール７、７に停車中の台車１０は搬送レール８で次の研磨盤に台車１０を搬送するために待機していた次の搬送キャリヤ２１と連結手段により連結し、前記と同じ操作を繰り返すことによって搬送モーター１９の回転により搬送キャリヤ２１と共に再び走行レール７、７に沿って前進する。
【００３６】
台車１０が次に停車する位置は、その上部に次の水平往復動手段２３が待機し、その下部には次の研磨盤３が配置されており、連結シリンダー２０の復動、押圧シリンダー２８と水平往復動モーター３０の作動により隣接した次の研磨盤３でガラス板１６を再び研磨し、並設した研磨盤３、３・・・に順次移動させて次々とガラス板１６を研磨していくが、その後方では次の台車１０を介して懸吊する上部定盤１８に係着するガラス板１６が同時に研磨、搬送を繰り返して研磨を行い、さらに後方の複数台の上部定盤１８も続いて研磨仕上げを行う。
【００３７】
複数台の研磨盤３を通過し、研磨が終了して可動支持体３３の手前で停車中の台車１０を手動、または自動で可動支持体３３の走行レール７'、７ 'に前進移動させ、該可動支持体３３に停車中に傾動手段３２の傾動シリンダー３９を作動せしめると、ロッド３８の降下と共にシャフト軸３５を軸としてアーム３７を回動させるが、該アーム３７の先端に固着する可動支持体３３も追従して回動し、走行レール７'、７'に台車１０を介して装着する上部定盤１８も追動し、該上部定盤１８のプレッシャプレート１７に吸着するガラス板１６も斜め状態となり作業者の目視内に姿を表す。
【００３８】
その状態を保持している間に研磨仕上げ終了のガラス板１６を取り外し新たに研磨するガラス板を取り付け、次いで傾動シリンダー３９の復動により可動支持体３３の端部が軌道支持体９の端部に近接して直列一本化状態になり、台車１０より垂下する上部定盤１８を手動により走行レール７、７の前記所定の位置まで前進移動させ、前記所定の位置で搬送キャリヤ２１との連結を待ち、連結後前記した作動を繰り返すものである。
【００３９】
走行レール７、７に装着した複数の台車１０には、数台毎に上部定盤１８に代わり研磨盤３の目詰まり除去用の図示しないドレッシング用プレートを設ければ、上部定盤１８と同様な作動によって並べた複数の研磨盤３の研磨面の目詰まりを除去して研磨盤３を次々と再生し、良好な研磨仕上面を常に保持することが出来るものである。
【００４０】
【発明の効果】
本発明は、ガラス板等の基板を並設した複数台の研磨盤に連続的に搬入して研磨することにより効率よく、また研磨の仕上がり品質も常に一定となり、また、可動支持体に縣吊された上部定盤を回動せしめる傾動手段を設けたことにより傾動状態において上部定盤に対するガラス板の着脱も安全に確実に行うことができ、極めて簡易な構成でその目的が達成できる等その効果は顕著である。
【図面の簡単な説明】
【図１】上部定盤の作動を説明する一部を切欠省略した斜視図。
【図２】傾動する可動支持体の側面図。
【図３】本装置の全体を示す組立正面図。
【符号の説明】
３ 研磨盤
７、７' 走行レール
８ 搬送レール
９ 軌道支持体
１０ 台車
１１ 連結受器
１３ 軸部
１６ ガラス板
１７ プレッシャプレート
１８ 上部定盤
２０ 連結シリンダー
２１ 搬送キャリヤ
２２ ビーム
２３ 水平往復動手段
２８ 押圧シリンダー
３２ 傾動手段
３３ 可動支持体
３４ 支柱
３７ アーム
５０ シリンダーロッド [0001]
BACKGROUND OF THE INVENTION
The present invention relates to a polishing apparatus for flattening the surface of a glass plate, and particularly relates to a continuous polishing apparatus that sequentially polishes glass plates that are successively carried on a plurality of polishing plates arranged side by side .
[0002]
[Prior art]
When polishing the surface of a glass plate or substrate, place the glass plate on the surface on either the lower surface of the upper surface plate that can be linearly reciprocated and swung, or the upper surface of the lower surface plate that rotates. A technique for setting and polishing one or both surfaces of a glass plate between an upper surface plate and a lower surface plate is known.
[0003]
For example, as a prior art for continuously polishing the surface of a glass plate, a polishing table for transferring the glass plate in one direction, and a plurality of glass plates disposed above the polishing table along the transfer direction of the glass plate There is a continuous polishing apparatus for glass plates, each of which has a polishing tool, and each polishing tool performs an eccentric rotational movement with respect to the glass plate by an eccentric shaft, and the rotational phase of adjacent polishing tools is reversed. (Patent Document 1) Furthermore, the plate-like body is moved so that the surface of the plate-like body such as a glass plate moves in the same plane, and a plurality of roll-shaped polishing pads are arranged with the axis line on the surface of the plate-like body. The surface of the plate-like body is arranged in parallel to the plate-like body and in a direction substantially perpendicular to the moving direction of the plate-like body, and the adjacent roll-like polishing pads are rotated in opposite directions and pressed against the plate-like body. There are a plate-like body polishing method characterized by polishing a plate-like body, and a plate-like body polishing apparatus using a roll-like polishing pad as a polishing tool. (Patent Document 2)
[0004]
[Patent Document 1]
JP-A-2-83150 [Patent Document 2]
JP-A-2-256454
[Problems to be solved by the invention]
The inventions described in Japanese Patent Laid-Open No. 2-83150 and Japanese Patent Laid-Open No. 2-256454 both polish the glass plate continuously, but in the former case, they are polished with a polishing cloth adsorbed with water. Because it is a method of fixing the glass plate placed on the table, there is a concern that the polishing pressure may cause a displacement on the table and come into contact with other glass plates arranged in plural, and there is a gap between adjacent glass plates. In some cases, a plurality of polishing tools tend to collide with each other at the time of transit, and there is a problem that the edge of the glass plate may be chipped and cracked.
[0006]
Moreover, since the latter thing uses the roll-shaped polishing pad, there existed a problem that the contact area of this pad and a plate-shaped body became too small, and polishing efficiency was low.
[0007]
[Means for Solving the Problems]
In view of such problems, the present invention has a simple configuration, can efficiently polish a glass plate continuously carried on a plurality of polishing machines arranged side by side, and can also ensure a stable finish quality, The glass plate can be attached to and detached from the upper surface plate safely and reliably, and the purpose is to perform continuous polishing along with the conveyance of the glass plate.
[0008]
That is, the polishing apparatus of the present invention has a plurality of horizontally rotating polishing disks arranged side by side, and a plurality of transport carriers on both side surfaces of a track support extending in an arc shape and endless loop in the horizontal direction at the upper part thereof. a transport rail for mounting the, impregnated with a running rail for mounting a plurality of carriages connected by connecting detachable connecting means to said transport carrier, a travel freely the carriage along the travel rail in the running rail Mounted and supported by an upper surface plate provided with a vertically movable pressure plate that hangs and suspends a glass plate attached to each of the carts, and the cart is pitched between the polishing discs along the conveying rail. by a length corresponding to advance to the conveyance carrier for moving the upper platen of the upper side portion of the polishing disc to the next polishing board adjacent mounted on the transfer rail, it presses the upper surface plate in polishing machines And the traveling rail It is disposed a plurality of horizontal reciprocating means you polished reciprocated along the upper side portion of each of the polishing disk.
Thus, a plurality of carriages circulate traveling on side portions of the polishing plate by a conveying carrier mounted on the track support, the polishing platen by lowering the upper platen, which is suspended from the stop the carriage It was to sequentially polish a glass plate that is continuously conveyed.
[0009]
Further, the in the middle portion of the track support and the running rail, in the middle of the cut space portion of the track support and the running rail and the conveying rails, the track support, end of the running rail and the conveying rails parts or cutting unit abutting the movable support and provided with a running rail which is affixed to the movable support, perpendicular to the movable support on a post erected apart from the opposite side of the running rail which is affixed to the movable support member an arm which is pivotally supported, is provided with a tilting means which can be rotated the upper surface plate that is suspended in the movable support by rotating the arm. As a result, the glass plate attached to the upper surface plate is attached and detached while the tilting means maintains the tilted state .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present invention, in the upper portion of the plurality of polishing board arranged side by side, the traveling movable plurality of upper surface plate provided, by coupling a removable trolley to transport carrier sequentially an upper surface plate to a plurality of polishing machines enhance the polishing efficiency by performing polishing while moving continuously by a plurality of polishing machines, multiple polishing the same conditions by a plurality of polishing board arranged side by side is polished by being made to the respective glass plates The polishing quality of the product is constant, and the attaching / detaching operation of the glass plate attached to the upper surface plate by the tilting means of the upper surface plate can be performed easily and safely.
[0011]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0012]
FIG. 1 is a perspective view with a part cut away to explain the operation of the upper surface plate, FIG. 2 is a side view of the tilted upper surface plate viewed from the cross-sectional side of the movable support, and FIG. The whole assembly front view of an apparatus is shown.
[0013]
As shown in FIG. 3, a plurality of polishing tables 4 provided with a polishing disk 3 that is horizontally rotatable on a rotation drive unit 2 seated in the frame of the machine table 1 are arranged in series in a direction perpendicular to the paper surface , A plurality of frames 5, 5,... Are provided on both sides of the plurality of polishing tables 4, 4... On a bracket 6 protruding from each of the frames . the track support 9 of the elongated fixed horizontally supported in the arrangement direction of the grinding stand 4, wherein the said track support 9 a plurality of frames 5, and extends between ....
[0014]
Further, as shown in FIG. 1, two traveling rails 7, 7 are provided in parallel on one side surface of both side surfaces of the track support 9, and the traveling rails 7 , 7 are provided on the side surfaces. The conveyance rail 8 and the traveling rails 7 and 7 are attached to both side surfaces of the track support 9 by fixing the transfer rail 8 to the side surface of the track support 9 opposite to the above.
[0015]
A conventionally known carriage 10 is mounted on the two traveling rails 7, 7 provided parallel to the vertical position so as to be able to travel along the traveling rails 7, 7. 7 is sandwiched between a plurality of wheels, and is suspended and mounted so that the side surface of the track support 9 and the plate surface of the carriage 10 are parallel to each other.
[0016]
A coupling receiver 11 of a coupling means is fixed to the upper end of the carriage 10 , and projecting bearing portions 12, 12 ′ are fixed to the upper and lower positions of the plate surface of the hanging carriage 10, and the bearing portions 12, 12 ′ are fixed. along with supporting the shaft portion 13 which penetrates and supports the fixing plate 14 fixed to the upper side bearing portion 12 of the shaft portion 13 by the compression springs 15, 15 provided on both sides of the shaft portion 13.
[0017]
An upper surface plate 18 is fixed to the lower shaft end of the shaft portion 13, and a sheet-like foam (back pad) made of felt or porous urethane resin (not shown) is formed on the lower surface of the upper surface plate 18. Is attached with a double-sided adhesive tape or the like, and a pressure plate 17 is provided that adsorbs the glass plate 16 of the material to be polished by the surface tension of water that wets the foam .
[0018]
As will be described later , the upper platen 18 compresses and lowers the shaft portion 13 by compressing the compression springs 15 and 15 with a pressing force from above, but when the pressing force is released, the compression springs 15 and 15 are restored. The fixed plate 14 is stopped in a state where it is pressed against the bearing portion 12 on the upper side by force, and the upper surface plate 18 is held so as to be movable up and down.
[0019]
Further, the upper surface plate 18 which is suspended supported on the carriage 10 can be reciprocated in the fine movement in the polishing surface plate along a travel rail 7, 7 extending in the horizontal direction, or a plurality of the conveying carrier 21 It is possible to travel on the polishing tables 4, 4,.
[0020]
On the other hand, a transport motor 19 that can rotate forward and backward is seated on the transport rail 8, a connection cylinder 20 as a connection means is fixed on the upper surface, and a transport carrier 21 that is self-propelled by a plurality of wheels is mounted.
[0021]
When the connecting cylinder 20 is inserted into a hole provided in the connecting receiver 11 provided on the carriage 10 to connect the carriage 10 and the carrier 21, the carrier 21 is moved forward. The carriage 10 can be moved forward by a length corresponding to the pitch between the polishing disks 3 and 3 disposed below by a carrier 21 that is a driving source and is driven by the carrier motor 19.
[0022]
After the connecting cylinder 20 is retracted and the connecting cylinder 20 is disconnected from the connecting receiver 11 and then the transport motor 19 is reversed, only the transport carrier 21 is self-propelled and moved back to the original position, that is, the origin position. Can be made.
[0023]
The upper position of the shaft portion 13 of the upper surface plate 18 to extend the cross-sectional opening shaped steel beam 22 in the horizontal direction over parallel to and substantially the same length as the track support 9, to the beam 22 A horizontal reciprocating means 23 is arranged in accordance with the pitch between the polishing tables on the plurality of polishing tables 4 , 4 .
[0024]
The horizontal reciprocating means 23 has a structure in which a rack 24 is provided on the side surface of the beam 22, and a pair of linear motion rails 25, 25 are provided in parallel to each other on the bottom surface of the beam 23. A horizontal reciprocating plate 26 is provided, which is loosely fitted in 25 and is fixed with guides 27 and 27 that are movable along the linear motion rails 25 and 25. The pressing cylinder 28 of the cylinder rod 50 that presses the top of the portion 13 is provided in a suspended shape.
[0025]
Normally, the cylinder rod 50 of the pressing cylinder 28 and the shaft portion 13 are separated from each other. However, when the cylinder rod 50 is protruded by the operation of the pressing cylinder 28, the tip of the cylinder rod 50 is moved to the shaft portion 13. pressing the shaft portion 13 downward away under so as to cover the top of, is in a state of pressing the upper surface plate 18.
[0026]
A reciprocating horizontal reciprocating motor 30 seated on the side end side of the horizontal reciprocating plate 26 via a mounting seat 29, and a shaft mounted on the shaft end of the horizontal reciprocating motor 30 so as to mesh with the rack 24. When the horizontal reciprocating motor 30 is rotated by providing the provided pinion 31, the horizontal reciprocating plate 26 is linearly moved, and the horizontal reciprocating means 23 rotates the horizontal reciprocating motor 30 forward and backward, thereby rotating the beam. The pressing cylinder 28 and the cylinder rod 50 can be reciprocated horizontally along linear motion rails 25, 25 provided on the lower surface of 22.
[0027]
The track support 9 is extended in series with the conveying rails 8 and the traveling rails 7 and 7 in a row on the polishing table 4, 4..., Both ends thereof, that is, the polishing table 4 arranged in series. 4,... Are provided with endless loop-shaped track supports 9 and running rails 7 and 7 in a circular arc with a curvature that allows the carriage 10 to pass through, and the carriage 10 is circulated by the carrier carrier 21. be able to.
[0028]
In the middle part of the endless loop-shaped track support 9 and the running rails 7, 7, the track support 9, the running rails 7, 7 and the transport rail 8 are cut at two places, and the space portion of the short part cut and removed is As shown in FIG. 2, a new movable support 33 is inserted separately from the track support 9 to which the traveling rails 7 'and 7' for carrying the carriage 10 that suspends and supports the upper surface plate 18 are attached.
[0029]
The movable support 33 is rotatably provided via a bearing (not shown) on a column 34 that stands upright in a direction opposite to the side on which the traveling rails 7 ′ and 7 ′ are provided. The side surface of the movable support 33 is fixed to the shaft 35 via a bracket 36 in a scale-like manner, and the end of an arm 37 provided with a balancer 40 and a tilting cylinder 39 provided adjacent to the tilting means 32, that is, the column 34. When the rod 38 is connected and moved up and down, the arm 37 rotates in the direction of the arrow shown in FIG. 2, and the carriage 10 is moved to the traveling rails 7 ′ and 7 ′ by the inclination of the movable support 33 integrated with the arm 37. The upper surface plate 18 that is being suspended and attached to the upper and lower sides of the pressure plate 17 is inclined at the same time, and the glass plate 16 that is being adhered to the lower surface of the pressure plate 17 is also inclined, which represents an inclined posture as viewed from the side.
[0030]
The operation of the present invention will be described below.
[0031]
At the position of the movable support 33, the glass plate 16 is attached to the pressure plate 17, and the carriage 10 that is stopped is retracted from the position above the first polishing plate 3 to a predetermined position by the reverse rotation of the transport motor 19 in advance. Then, it is moved to the position of the transport carrier 21 that is stopped .
[0032]
Immediately after that, when the connecting cylinder 20 provided on the transport carrier 21 is operated and the cylinder rod is protruded, the cylinder rod is fitted to the connection receiver 11 provided on the carriage 10, and the carrier carrier 21, the carriage 10, There are connected, then the forward and stopped with carriage 10 by the forward rotation of the conveying carrier 21 transport motor 19 to a predetermined position of the upper side portion of the polishing disc 3 in rotation on the polishing table 4, the stop position the coupling cylinder 20 and the conveying carrier 21 and the carriage 10 and moves back are separated, conveying carrier 21 is stopped at the predetermined position moves backward again along the conveying rail 8 by the reverse rotation of the conveying motor 19 in, Wait for the next carriage 10.
[0033]
On the other hand, the upper platen 18 which is suspended from the carriage 10 stops at the upper side portion of the polishing plate 3 is horizontally reciprocated and drop by Tsuido the operation of the horizontal reciprocating means 23 mounted on the upper portion of the beam 22 First, the horizontal reciprocating plate 26 reciprocates along the linear motion rail 25 by forward and reverse rotation of the horizontal reciprocating motor 30, and then suspended on the lower surface of the horizontal reciprocating plate 26. When the cylinder rod 50 is lowered by the operation of the pressing cylinder 28, the tip of the cylinder rod 50 abuts so as to cover the top end of the shaft portion 13 , and the shaft portion 13 is pressed to be supported by the springs 15 and 15. and lowers the shaft portion 13, the shaft portion 13 integrally, while the upper platen having a pressure plate 17 for supporting the glass plate 16 on the lower surface is horizontally reciprocated, lowers the pressure plate 17 If pressed to the polishing board 3 in rotation, the horizontal reciprocating motion of rotation and the upper surface plate 18 of the polishing plate 3 the glass plate 16 to make a water film of the polishing liquid, in addition grinder of the glass plate 16 by the descent pressing The contact surface with 3 is polished.
[0034]
While pressing the upper surface plate 18 on the rotating polishing plate 3 and following the forward and reverse rotation of the horizontal reciprocating motor 30 to finely move the glass plate 16 along the traveling rails 7 and 7 for a certain time. When the polishing is performed, the upper surface plate 18 is lifted and separated from the polishing plate 3 by the backward movement of the pressing cylinder 28 and the stop of the horizontal reciprocating motor 30.
[0035]
Next, the carriage 10 stopped on the traveling rails 7 and 7 is connected by the connecting means to the next carrier carrier 21 that has been waiting for the carriage 10 to be conveyed to the next polishing board by the conveyance rail 8, and the same operation as described above is performed. By repeating the operation, the conveyance motor 19 rotates and moves forward along the traveling rails 7 and 7 together with the conveyance carrier 21.
[0036]
At the next position where the carriage 10 stops, the next horizontal reciprocating means 23 stands by at the upper part thereof, and the next polishing disk 3 is arranged at the lower part thereof. The glass plate 16 is polished again by the next adjacent polishing disc 3 by the operation of the horizontal reciprocating motor 30, and sequentially moved to the parallel polishing discs 3, 3,... To polish the glass plate 16 one after another. However, behind that, the glass plate 16 attached to the upper surface plate 18 suspended through the next carriage 10 is simultaneously polished and repeatedly conveyed and polished, and a plurality of rear upper surface plates 18 are also formed. Subsequently, a polishing finish is performed.
[0037]
The carriage 10 that has passed through the plurality of polishing machines 3 and has been polished and stopped in front of the movable support 33 is manually or automatically moved forward to the traveling rails 7 ′ and 7 ′ of the movable support 33. When the tilting cylinder 39 of the tilting means 32 is operated while the movable support 33 is stopped, the arm 37 is rotated about the shaft shaft 35 as the rod 38 is lowered, but the movable support fixed to the tip of the arm 37 is fixed. body 33 is also rotated to follow the travel rail 7 ', 7' upper surface plate 18 for mounting through the carriage 10 to also Tsuido, intake Chakusuru glass plate 16 to the pressure plate 17 of the upper surface plate 18 Becomes an oblique state and appears in the visual observation of the operator.
[0038]
While the state is maintained, the glass plate 16 that has finished the polishing finish is removed and a new glass plate is attached, and then the end of the movable support 33 is moved to the end of the track support 9 by the backward movement of the tilt cylinder 39. close will unify series state, is moved forward the upper surface plate 18 extending downward from the carriage 10 to the predetermined position of the running rails 7,7 by manual, the connection between the conveying carrier 21 in the predetermined position The above operation is repeated after connection.
[0039]
If a plurality of carriages 10 mounted on the traveling rails 7 and 7 are provided with a dressing plate (not shown) for removing clogging of the polishing board 3 instead of the upper surface plate 18 every several units, the same as the upper surface plate 18. The clogging of the polishing surfaces of the plurality of polishing discs 3 arranged by a simple operation is removed, the polishing discs 3 are regenerated one after another, and a good polished finish surface can always be maintained.
[0040]
【The invention's effect】
The present invention is efficient by continuously carrying in and polishing to a plurality of polishing machines in which substrates such as glass plates are arranged side by side , the finished quality of the polishing is always constant, and the suspension is suspended from a movable support. By providing a tilting means for rotating the upper surface plate, it is possible to safely and reliably attach and detach the glass plate to and from the upper surface plate in the tilted state, and the purpose can be achieved with an extremely simple configuration. Is remarkable.
[Brief description of the drawings]
FIG. 1 is a perspective view in which a part for explaining the operation of an upper surface plate is omitted.
FIG. 2 is a side view of a tilting movable support.
FIG. 3 is an assembled front view showing the entire apparatus.
[Explanation of symbols]
3 Polishing board 7, 7 'Travel rail 8 Transport rail 9 Track support 10 Carriage 11 Coupled receiver
13 shaft portion 16 glass plate 17 pressure plate 18 upper surface plate 20 connecting cylinder 21 transport carrier
22 beam 23 horizontal reciprocating means
28 Pressing cylinder 32 Tilt means 33 Movable support 34 Strut 37 Arm
50 cylinder rod

Claims (1)

水平回転する研磨盤を複数台並設し、
その上方部で水平方向に円弧状で無端ループ状に延設する軌道支持体の両側面に複数台の搬送キャリアを装着する搬送レールと、前記搬送キャリアへ連結着脱自在な連結手段により連結する複数台の台車を装着する走行レールとを添着し、
前記走行レールに沿って走行自在な前記台車を前記走行レールに装着し、
前記台車の夫々にガラス板を係着し懸吊する上下動自在なプレッシャプレートを設けた上部定盤を懸吊支持し、
前記台車を前記搬送レールに沿って研磨盤間のピッチに相当する長さだけ前進させて、研磨盤の上方部の前記上部定盤を隣接した次の研磨盤に移動させる搬送キャリヤを前記搬送レールに装着し、
前記上部定盤を研磨盤に押圧かつ前記走行レールに沿って往復動せしめて研磨する複数の水平往復動手段を前記研磨盤の各々の上方部に配設し、
複数の台車を前記軌道支持体に装着した搬送キャリアで複数の研磨盤の上方部に循環走行させて、停車した台車に懸吊された上部定盤を降下させて研磨盤上に連続的に搬入されるガラス板を順次研磨するようにし、
さらに、前記軌道支持体および前記走行レールの途中部分において、前記軌道支持体と前記走行レールおよび前記搬送レールの途中を切断した空間部分に、前記軌道支持体、前記走行レールおよび前記搬送レールの端部または切断部に当接する可動支持体および前記可動支持体に添着した走行レールを設け、
前記可動支持体に添着した走行レールの反対側より離れて立設する支柱上で前記可動支持体と直交するアームを軸支し、前記アームを回動させて前記可動支持体に懸吊された前記上部定盤を回動せしめる傾動手段を設け、
前記傾動手段が傾動状態を保持している間に前記上部定盤に係着するガラス板の着脱を行うようにしたことを特徴とするガラス板の研磨装置。Multiple horizontal grinding machines are installed side by side.
A plurality of transport rails for mounting a plurality of transport carriers on both side surfaces of a track support extending in an arc shape in the horizontal direction and extending in an endless loop in the upper part thereof, and a plurality of units connected to the transport carriers by a detachable connection means Attaching the traveling rail to which the carriage of the base is attached,
Running freely the carriage along the running rail is attached to the running rail,
Suspend and support an upper surface plate provided with a vertically movable pressure plate that hangs and hangs a glass plate on each of the carts ,
Is advanced by a length corresponding to the pitch between the polishing plate along said carriage to said conveying rail, said conveying carrier moving conveying the top plate of the upper side portion of the polishing disc to the next polishing board adjacent Attached to the rail ,
It disposed a plurality of horizontal reciprocating means you polished reciprocated along the pressing and the running rail the upper surface plate in polishing board on side portions of each of said polishing plate,
A plurality of carriages by circulating travel on side portions of the polishing plate by a conveying carrier mounted on the track support, continuously to the polishing platen by lowering the upper platen, which is suspended from the stop the carriage The glass plates that are brought in are polished sequentially ,
Further, in the middle part of the track support and the traveling rail, the end of the track support, the traveling rail, and the transport rail is formed in a space portion that is cut in the middle of the track support, the travel rail, and the transport rail. A movable support that abuts against the cutting portion or the cutting portion and a traveling rail attached to the movable support,
An arm orthogonal to the movable support is pivotally supported on a support column standing away from the opposite side of the traveling rail attached to the movable support, and the arm is pivoted and suspended on the movable support. A tilting means for rotating the upper surface plate is provided,
An apparatus for polishing a glass plate , wherein the glass plate attached to the upper surface plate is attached and detached while the tilting means maintains the tilted state .
JP2002263242A 2002-09-09 2002-09-09 Glass plate polishing equipment Expired - Fee Related JP3997131B2 (en)

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JP2002263242A JP3997131B2 (en) 2002-09-09 2002-09-09 Glass plate polishing equipment
TW092122452A TWI231780B (en) 2002-09-09 2003-08-15 Glass-plate polishing apparatus and method thereof
CNB031579957A CN1259177C (en) 2002-09-09 2003-09-05 Glass plate polisher and method thereof
KR1020030062893A KR100584053B1 (en) 2002-09-09 2003-09-09 Glass-plate polishing apparatus and method thereof
SG200305687A SG103938A1 (en) 2002-09-09 2003-09-09 Glass-plate polishing apparatus and method of thereof

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KR100926025B1 (en) * 2005-09-14 2009-11-11 가부시키가이샤 오카모도 코사쿠 기카이 세이사쿠쇼 Double face plane polishing machine and method for polishing rectangular workpiece
CN100467225C (en) * 2007-08-18 2009-03-11 太原风华信息装备股份有限公司 LCD glass grinder
DE102008031061A1 (en) * 2008-07-01 2011-01-05 Grenzebach Maschinenbau Gmbh Method and device for trimming photovoltaic modules
CN101745861B (en) * 2008-12-02 2012-09-26 富葵精密组件(深圳)有限公司 Polishing wheel set, polishing device and polishing system
KR101138722B1 (en) * 2011-08-09 2012-04-20 주식회사 글라소닉 A method of manufacturing a chemically tempered thin glass using a full automated thin glass grinding machine with separated multi spindles and an apparatus for the same
KR20150142507A (en) 2014-06-12 2015-12-22 나노텍 주식회사 Curved glass surface polishing device
KR20150142511A (en) 2014-06-12 2015-12-22 나노텍 주식회사 Curved glass surface polishing device
CN108326681B (en) * 2018-05-21 2023-11-17 雷磊 Environment-friendly type mouse cage turning rear polishing device based on manual-automatic integrated structure
CN108907935A (en) * 2018-07-27 2018-11-30 蚌埠淮畔精密机械有限公司 A kind of two-sided sanding and polishing device of plate glass
CN110893576B (en) * 2019-11-11 2021-04-16 东旭(锦州)精密光电科技有限公司 Polishing machine
CN112720149A (en) * 2020-12-30 2021-04-30 李猛 Processing method for connection surface of light steel structural member

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CN1259177C (en) 2006-06-14
KR20040023555A (en) 2004-03-18
SG103938A1 (en) 2004-05-26
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KR100584053B1 (en) 2006-05-29
TWI231780B (en) 2005-05-01

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