200412267 (1) 玖、發明說明 【發明所屬之技術】 本發明係關於鋼管端面加工裝置，特別是有關由工場製造 並將被切斷的鋼管製成預定的長度用的鋼管端面加工裝置 【先前技術】 藉由第9圖說明鋼管端面加工裝置的整體。1是被加 工的鋼管，2是將鋼管1朝與紙面呈垂直方向地朝橫方向 依序搬運的支撐區域，3是在支撐區域2內由朝左右自由 旋轉的複數的鋼管支撐滾子列所組成且卡合在鋼管1並使 移動地被驅動的鋼管壓入及拉出用的定位滾子，4是設在 定位滾子3的右端的鋼管端面加工裝置。另在定位滾子3 的左端也設置與鋼管端面加工裝置4相同的結構。 鋼管端面加工裝置4，是由：面對支撐於區域2的鋼 管挾持裝置6、設成可動地與鋼管1的端部接觸的停止器 7、與鋼管1的端部相面對的端面加工機8所構成。 且，在挾持裝置6中，設有從鋼管1的端部附近由管 軸方向的前後2處挾持的2個的挾持塊44。 此各挾持塊4 4，以往，如第1 0圖、第1 1圖所示， 係在架台40上的固定位置由齒條42部與可自由旋轉的齒 輪41卡合並藉由驅動用缸筒45可在架台40上進行相對 移動地固定裝設於支撐台43的相對面上，且各挾持塊44 分別具備2個的凹圓形挾持面，且使4個的凹圓形挾持面 (2) (2)200412267 的4點與鋼管1接觸。 鋼管1的端面加工，是使鋼管1由定位滾子3朝端面 加工裝置4側壓入，並在與停止器7接觸的位置由挾持塊 44挾持鋼管1的管軸方向的前後2處。 停止器7從鋼管1朝側部遠離，使端面加工機8前進 並將鋼管1的端部切削加工成預定的開口及平面形狀之後 後退，再將挾持塊44放開，接著由將鋼管1藉由定位滾 子3朝支撐區域2側拉回的方法使鋼管的兩端依序地加工 成預定的長度。 但是，此端面加工裝置4的鋼管1的兩端的切削加工 中，振動經常地發生，而產生製品的加工不良。而且此原 因，已知是由挾持塊44及鋼管1的接觸不良所引起的。 即，鋼管1雖看似正圓且正直，但實際上多是非正圓且非 正直的情況，特別是無接縫鋼管其變形量大。 因此推測是由鋼管1的剖面變形或曲折而產生鋼管1 及挾持塊44的接觸不良，而利用感壓紙檢查其接觸狀態 。第1 2圖是使用感壓紙測量鋼管1及挾持塊44的接觸狀 態的情況的一例。 第1 2圖中係顯示將挾持塊44的鋼管挾持狀態的支撐 區域2的入口側作爲左側面，將出口側作爲右側面地朝左 右展開的圖，且將由感壓紙檢測的接觸部以斜線記號46 表示。此情況爲了測量鋼管1的端部的直徑及變形及曲折 而使4個挾持塊44之中的對角位置的2個的挾持塊44是 以2點與鋼管1接觸，而其他的2個的挾持塊4 4是不與 (3) (3)200412267 鋼管1接觸。 已了解在這種狀態下，會依據鋼管1的端部的直徑及 正圓度及正直度而發生各種狀況，當產生挾持塊44不與 鋼管接觸的狀態時，鋼管1的拘束變得不充分而當增加切 削力時會在鋼管1上產生振動。 且，凹圓形的挾持塊44，有所謂的每當鋼管尺寸變 更時，皆需交換挾持塊4 4，而使運轉率無法提昇的問題 【發明內容】 [發明所欲解決的課題] 本發明有鑑於上述問題，其課題爲提供一種：藉由夾 具強力地拘束將要施加端面加工的鋼管，使不會產生加工 不良，且，即使鋼管尺寸變化也可以將鋼管迅速地挾持拘 束，且可以進行運轉率佳的端面加工之鋼管端部加工裝置 [解決上述課題的手段] 爲了解決上述課題，本發明的鋼管端面加工裝置，由 鋼管製造線製造並將被切斷的鋼管製成預定的長度用的鋼 管端面加工裝置，其特徵爲：設在前述加工裝置的鋼管端 面加工機的前段的鋼管夾具裝置，係具備由管軸方向的前 後2處從直角4方向朝向鋼管進退驅動的附擺頭機構的V 字型挾持塊。 (4) (4)200412267 依據具有以上的結構的本發明的鋼管端面加工裝置， 鋼管挾持裝置，因爲形成使附擺頭機構的V字型挾持塊 從直角4方向朝向鋼管進退驅動的結構，所以4個V字 型挾持塊各是無關鋼管的變形或彎曲，而可與鋼管確實地 以V字型錐面2點接觸。在此狀態下由4個V字型挾持 塊所拘束的鋼管，即使被大的切削力作用也可以保持充分 的拘束力。 且，爲了解決上述課題，本發明的鋼管端面加工裝置 ，如上述的鋼管端面加工裝置，其中，前述鋼管挾持裝置 的前述前後2處的各 V字型形挾持塊是從相互地不同直 角4方向朝向鋼管進行進退驅動。 如此，藉由形成將前述的前後2處的各 V字型挾持 塊從相互地不同的直角4方向朝向鋼管進退驅動的結構， 而使鋼管的周圍的各V字型挾持塊成爲不會相互干渉的 配置，即使將小徑的鋼管挾持的情況，也可以使各V字 型挾持塊是不會相互干渉地將鋼管挾持。 且，爲了解決上述課題，本發明的鋼管端面加工裝置 ，如上述的鋼管端面加工裝置，其中，前述鋼管挾持裝置 的各V字型形挾持塊，是由定行程油壓缸筒朝向鋼管進 行進退驅動，其中的一部分或者是全數的V字型挾持塊 更是由與前述定行程油壓缸筒直列設置的短行程油壓缸筒 進行進退驅動。 藉由如此將鋼管挾持裝置的至少一部分的V字型挾 持塊，以定行程油壓缸筒、與其直列設置的短行程油壓缸 -10- (5) (5)200412267 筒進退驅動的2段驅動方式的結構，而當將鋼管以V字 型挾持塊拘束時，就可以首先由定行程油壓缸筒所移動的 V字型挾持塊成爲與鋼管2點接觸狀態，接著，由各V字 型挾持塊的V形錐面將被2點接觸的鋼管以短行程油壓 缸筒確實地固定。且，藉由此2段驅動方式，即使鋼管的 直徑與預定値不同，或是鋼管變形或彎曲’也可以確實地 挾持。 且，爲了解決上述課題，本發明的鋼管端面加工裝置 ，如上述的鋼管端面加工裝置，其中，在前述鋼管挾持裝 置的各油壓缸筒的油壓控制系統設有嚮導逆止閥。 藉由在如此鋼管挾持裝置的各油壓缸筒的油壓控制系 統設有嚮導逆止閥的結構，即使強力的切削力作用在鋼管 ，也可以藉由其嚮導逆止閥，對抗其切削力使鋼管確實地 被保持。 【實施方式】 茲佐以圖面說明本發明之鋼管端面加工裝置。 第1圖中，1 6是此實施例的鋼管端面加工裝置用的 挾持裝置，16a、16b是朝向構成挾持裝置16的管軸方向 的端面加工機8且設在前後2處的夾具單元。其他的構成 要素與第9圖的習知裝置同樣，並以與第9圖相同的符號 表示。以下將1 6a稱爲前側夾具單元，將1 6b稱爲後側夾 具單元。 第2圖及第3圖中，17是裝設前後2個前側夾具單 -11 - (6) (6)200412267 元1 6 a、後側夾具單元1 6 b用的底架上的外殼。前後2個 前側夾具單元1 6a、後側夾具單元1 6b，是具備分別具有 V字形的錐面的二股的V字型挾持塊1 8，使4個的V字 型挾持塊1 8對於鋼管1呈X字狀從直角4方向進退移動 地設在外殼1 7內。 前側夾具單元16 a的下側，是在V字型挾持塊1 8之 間挾持中間臂1 9a及所需的定行程油壓缸筒20而連接螺 旋千斤頂22的結構。後側夾具單元1 6b的下側，是將V 字型挾持塊1 8挾持中間臂1 9a及所需的定行程油壓缸筒 2〇及調整用的短行程油壓缸筒21而與螺旋千斤頂22連 接的結構。 然而，前側夾具單元1 6a的上側及後側夾具單元1 6b 的上側，是挾持中間臂1 9b而使V字型挾持塊1 8與長行 程油壓缸筒2 3直列連接。且，前側夾具單元1 6 a及後側 夾具單元l6b，可以交換配置而將前後相反地設置。 第4圖〜第6圖中，各V字型挾持塊18分別構成二 股，並將其二股先端部形成於V字形的錐面且將下面形 成圓弧面，V字型挾持塊1 8，將此下面的圓弧面與中間 臂19的先端安裝部24上的圓弧面導引25連接，並以擺 動螺絲26及螺帽27可沿著圓弧面移動自如地與圓弧面導 引25側結合，而裝設成附擺頭機構的結構。且，第6圖 中，在圓弧面導引25的中間凹部，內藏有將與各V字型 挾持塊1 8的下部內面離接卡合的4個的小型的挾持塊固 定用油壓缸筒2 8 ’而使V字型挾持塊1 8可以固定在已橫 -12- (7) 200412267 向滑行後的位置。 且，如第5圖，直角4方向的相鄰接的各V字型 持塊1 8，是藉由以二股部配置成避免相互地干渉，而 即使在小徑的鋼管1的情況，也可以使V字型挾持塊 不會相互干渉地挾持。然而，此V字型挾持塊1 8的結 是使用日本特開平7- 1 6423 7等所示的公知的結構。 第7圖中，V字型挾持塊1 8進退驅動用的定行程 壓缸筒20、調整用的短行程油壓缸筒2 1、長行程油壓 筒23、挾持塊固定用油壓缸筒28、停止器7用的停止 操作用油壓缸筒29，是分別通過電磁閥30a、30b、30c 3 〇d、3 0e而與在油壓源及槽筒的管路連接，且在電磁 30a、 30b、 30c、 30d、 30e 及各缸筒 20、 21、 23、 28、 之間的管路是分別設有流量控制閥3 1及嚮導逆止閥3 2 具有以上結構的本實施形態的鋼管端面加工裝置， 側夾具單元1 6 a及後側夾具單元1 6 b的各油壓缸筒2 〇 2 1、2 3、2 8、2 9是由第7圖的控制系統的電磁閥3 0 a 3 0 e的切換及流量控制閥3 1的操作所控制。螺旋千斤 22，是預先藉由鋼管1的直徑而被定位在預定的行程。 由停止器7的停止器操作用油壓缸筒29的操作將停止 7朝端面加工機8前的鋼管進入位置送出的狀態下’藉 定位滾子3的驅動將鋼管1朝端面加工機8側壓入’並 止在與停止器7接觸的位置。 接著，將鋼管1的管軸方向的端部2處’由前側夾 單元1 6a及後側夾具單元1 6b挾持。即，首先延伸前側 挾 使 18 構 油 缸 器 閥 29 〇 刖 頂 藉 器 由 停 具 夾 -13- (8) (8)200412267 具單元1 6 a及後側夾具單元1 6b的下側的定行程油壓缸筒 2 0並上昇下側的V字型挾持塊1 8。接著’延伸前側夾具 單元1 6a的上側的長行程油壓缸筒23，並下降位在前側 上的V字型挾持塊1 8。 這時，前側夾具單元1 6a，是利用由定行程油壓缸筒 20及螺旋千斤頂22所產生的壓上力及由長行程油壓缸筒 23所產生的壓下力而以4個的V字型挾持塊1 8的V形錐 面將鋼管1挾入。當因鋼管1的正圓度或正直度的不良而 使V形錐面只與鋼管1單點接觸時，使V字型挾持塊1 8 朝橫方向被按壓並沿著圓弧面導引25擺頭式地滑行，並 以此作用使4個的V字型挾持塊1 8的V形錐面全部成爲 與鋼管1的面成爲2點接觸的狀態。 接著，由後側夾具單元1 6b上側的長行程油壓缸筒 2 3的延伸驅動下降上側的V字型挾持塊1 8，再由下側的 短行程油壓缸筒2 1的延伸驅動上昇下側的V字型挾持塊 1 8。此操作下，只要使下側2個的v字型挾持塊1 8多壓 出調整用的短行程油壓缸筒2 1的行程部分並將鋼管由上 側2個及下側2個的V字型挾持塊1 8的V形錐面強力挾 持’當單點接觸的情況時使V字型挾持塊1 8沿著圓弧面 導引2 5呈擺頭式地滑行，在此作用下，使4個的v字型 挾持塊1 8全部以V形錐面與管1的面成爲2點接觸的狀 態。 而且’這時前側·後側各4個的V字型挾持塊1 8， 無關鋼管1的變形·彎曲而可由V形錐面確實地與鋼管i -14- 200412267 Ο) 的面成爲2點接觸的狀態。在此狀態下，藉由延伸驅動內 藏於圓弧面導引25的挾持塊固定用油壓缸筒28來維持鋼 管1的挾持狀態。且在此狀態下開始切削的話，即使大的 切削力作用在V字型挾持塊1 8，也可以藉由第7圖的控 制系統的嚮導逆止閥3 2對抗切削力，而使鋼管確實地被 保持。 由停止器操作用油壓缸筒29的縮短驅動使停止器7 朝旁邊位置後退後，使端面加工機8前進，將鋼管1端部 切削成預定的開口及平面等的形狀後，朝原來位置後退， 將前側夾具單元1 6a及後側夾具單元1 6b張開，並以定位 滾子3的逆驅動將鋼管1從挾持裝置16拉出，再將鋼管 1朝出側依序送出後，再度返覆同樣的端面加工。 然而，前側夾具單元1 6 a、後側夾具單元1 6 b的上側 的長行程油壓缸筒23，是藉由使用檢測器將挾持及非挾 持之間的行程縮小地控制，而使4個的V字型挾持塊1 8 與鋼管1接觸的時間差減少而可以容易地挾持鋼管1。 第8圖是顯示由前側夾具單元1 6a、後側夾具單元 1 6b挾持有變形或彎曲的一般的鋼管1，並使用感壓紙測 量其挾持狀態的一例，將被測量的V字型挾持塊1 8及鋼 管1的接觸部3 6以斜線記號表示。如第8圖所示，無關 鋼管1的變形或彎曲，使面對直角方向的8個V字型挾 持塊1 8的1 6個的V形錐面由接觸部3 6分別與鋼管1接 觸而可以確實地挾持鋼管1。 藉由將此結構的挾持裝置組裝在鋼管的端面加工裝置 -15- (10) 200412267 ，而可以獲得以下的效果。 即使鋼管尺寸變化，也不需要交換V字型挾ί 。且，藉由使各V字型挾持塊1 8的擺頭機構、後 單元1 6b的V字型挾持塊1 8由直列2段配置的缸 動的機構，而即使鋼管的直徑與預定値不同，且即 形或彎曲的鋼管情況，也可以將管軸方向的前後2 計1 6點確實地挾持，即使強力地切削也不會發生ί 藉由在管軸方向的前後2處的夾具單元16a、 驅動用油壓系設置嚮導逆止閥3 2，就可以確實地 持力，即使在切削中大的切削力作用在鋼管也不會 動。此結果，可以獲得平坦的切削面，減少製品不 大幅地改善鋼管端面加工裝置的運轉率。 [發明的效果] 本發明的鋼管端面加工裝置，由鋼管製造線製 被切斷的鋼管製成預定的長度用的鋼管端面加工裝 特徵爲：設在前述加工裝置的鋼管端面加工機的前 管夾具裝置，係具備由管軸方向的前後2處從直角 朝向鋼管進退驅動的附擺頭機構的V字型挾持塊。 依據具有以上的結構的本發明的鋼管端面加工 鋼管挾持裝置，因爲形成使附擺頭機構的V字型 從直角4方向朝向鋼管進退驅動的結構，所以4 f 型挾持塊各是無關鋼管的變形或彎曲，而可與鋼管 以V字型錐面2點接觸。在此狀態下由4個V字 "鬼18 側夾具 筒所驅 使有變 處以合 艮動。 16b的 保持挾 發生振 良率， 造並將 置，其 段的鋼 4方向 裝置， 挾持塊 3 V字 確實地 型挾持 -16- (11) (11)200412267 塊所拘束的鋼管，即使被大的切削力作用也可以保持充分 的拘束力。 且，本發明的鋼管端面加工裝置，如上述的鋼管端面 加工裝置，其中，前述鋼管挾持裝置的前述前後2處的各 V字型形挾持塊是從相互地不同直角4方向朝向鋼管進行 進退驅動。 如此，藉由形成將前述的前後2處的各V字型挾持 塊從相互地不同的直角4方向朝向鋼管進退驅動的結構， 而使鋼管的周圍的各V字型挾持塊成爲不會相互干渉的 配置，即使將小徑的鋼管挾持的情況，也可以使各V字 型挾持塊是不會相互干渉地將鋼管挾持。 且，本發明的鋼管端面加工裝置，如上述的鋼管端面 加工裝置，其中，前述鋼管挾持裝置的各V字型形挾持 塊，是由定行程油壓缸筒朝向鋼管進行進退驅動，其中的 一部分或者是全數的V字型挾持塊更是由與前述定行程 油壓缸筒直列設置的短行程油壓缸筒進行進退驅動。 藉由如此將鋼管挾持裝置的至少一部分的 V字型挾 持塊，以定行程油壓缸筒、與其直列設置的短行程油壓缸 筒進退驅動的2段驅動方式的結構，而當將鋼管以V字 型挾持塊拘束時，就可以首先由定行程油壓缸筒所移動的 V字型挾持塊成爲與鋼管2點接觸狀態，接著，由各V字 型挾持塊的V形錐面將被2點接觸的鋼管以短行程油壓 缸筒確實地固定。且，藉由此2段驅動方式，即使鋼管的 直徑與預定値不同，或是鋼管變形或彎曲，也可以確實地 -17- (12) (12)200412267 挾持。 且，本發明的鋼管端面加工裝置，如上述的鋼管端面 · 加工裝置’其中，在·述鋼管挟持裝置的各油壓紅同的油 - 壓控制系統設有嚮導逆止閥。 藉由在如此鋼管挾持裝置的各油壓缸筒的油壓控制系 ~ 統設有嚮導逆止閥的結構，即使強力的切削力作用在鋼管 ，也可以藉由其嚮導逆止閥，對抗其切削力使鋼管確實地 被保持。 _ 【圖式簡單說明】 [第1圖]本發明的實施例的鋼管端面加工裝置的整體 側面圖。 [第2圖]第1圖的Π - Π線視圖。 [第3圖]第2圖的瓜-ΠΙ線視圖。 [第4圖]第2圖的IV部的擴大說明圖。 [第5圖]第4圖的V-V線視圖。 ® [第6圖]第5圖的VI - VI線視圖。 [第7圖]第1圖〜第3圖及第6圖所示的裝置的油壓 管路圖。 [第8圖]使用感壓紙測量本發明的實施例之裝置的挾 持鋼管時的挾持狀態之展開圖。 [第9圖]鋼管端面加工裝置的整體側面圖。 [第1 〇圖]第9圖的X - X線視圖。 [第1 1圖]第10圖的平面圖。 -18- (13) 200412267 [第12圖]使用感壓紙測量習知裝置的挾持鋼管時的 挾持狀態之展開圖。 [圖號說明] 1 鋼管 2 支撐區域 3 定位滾子 4 鋼管端面加工裝置 7 停止器 8 端面加工機 16 挾持裝置 16a 前側夾具單元 16b 後側夾具單元 17 外殻 18 V字型夾具工具 19a 中間懸桿 19b 中間懸桿 20 定行程油壓缸筒 2 1 短行程油壓缸筒 22 螺旋千斤頂 23 長行程油壓缸筒 24 先端安裝部 25 圓弧面導引 26 擺動螺絲200412267 (1) 发明. Description of the invention [Technology to which the invention belongs] The present invention relates to a steel tube end surface processing device, and more particularly to a steel tube end surface processing device manufactured by a factory to cut a cut steel tube into a predetermined length [prior art The whole of the steel pipe end surface processing apparatus is demonstrated using FIG. 1 is a processed steel pipe, 2 is a support area where the steel pipe 1 is transported in a horizontal direction in a direction perpendicular to the paper surface, and 3 is a plurality of steel pipe support roller rows which are freely rotated in the support area 2 in the left and right directions. A positioning roller for press-in and pull-out of a steel pipe that is composed and engaged with the steel pipe 1 and is driven to move, is a steel pipe end surface processing device provided at the right end of the positioning roller 3. The left end of the positioning roller 3 is also provided with the same structure as the steel pipe end surface processing device 4. The steel pipe end surface processing device 4 is composed of a steel pipe holding device 6 supported on the area 2, a stopper 7 provided to move in contact with the end of the steel pipe 1, and an end processing machine facing the end of the steel pipe 1. 8 composition. In addition, the holding device 6 is provided with two holding blocks 44 that are held at two positions in the pipe axis direction from the vicinity of the end of the steel pipe 1. Each of the holding blocks 44 is conventionally fixed to the pedestal 40 as shown in FIG. 10 and FIG. 11 by a rack 42 and a freely rotatable gear 41, and the cylinder is driven by the cylinder. 45 can be fixedly installed on the opposite surface of the support table 43 on the stand 40 so as to be relatively movable, and each of the holding blocks 44 is provided with two concave circular holding surfaces, and four concave circular holding surfaces (2 ) (2) 200412267 is in contact with steel pipe 1. The end surface processing of the steel pipe 1 is to press the steel pipe 1 toward the end surface processing device 4 by the positioning rollers 3, and to hold the steel pipe 1 at the front and rear directions of the pipe axis 1 by the holding blocks 44 at the positions in contact with the stopper 7. The stopper 7 moves away from the steel pipe 1 to the side, advances the end surface processing machine 8 and cuts the end of the steel pipe 1 into a predetermined opening and a flat shape, and then moves back. Then, the holding block 44 is released, and then the steel pipe 1 is borrowed. The method in which the positioning roller 3 is pulled back toward the support region 2 causes both ends of the steel pipe to be sequentially processed to a predetermined length. However, in the cutting processing of the both ends of the steel pipe 1 of this end surface processing device 4, vibrations often occur, resulting in processing defects of the product. The cause is known to be caused by poor contact between the holding block 44 and the steel pipe 1. That is, although the steel pipe 1 seems to be perfectly round and straight, it is often a case of being non-round and non-straight, and particularly the seamless steel pipe has a large amount of deformation. Therefore, it is presumed that the contact failure between the steel pipe 1 and the holding block 44 is caused by the deformation or tortuosity of the cross section of the steel pipe 1, and the contact state of the steel pipe 1 and the holding block 44 is checked with a pressure sensitive paper. Fig. 12 is an example of a case where the contact state of the steel pipe 1 and the holding block 44 is measured using a pressure sensitive paper. Figures 12 and 12 show the left side of the support side 2 of the steel tube holding state of the holding block 44 as the left side, and the right side of the outlet side as the left side, and the contact portion detected by the pressure sensitive paper is slanted. The symbol 46 indicates it. In this case, in order to measure the diameter, deformation, and tortuosity of the end portion of the steel pipe 1, the two holding blocks 44 at diagonal positions among the four holding blocks 44 are in contact with the steel pipe 1 at two points, and the other two The holding block 44 is not in contact with (3) (3) 200412267 steel pipe 1. It is understood that in this state, various conditions occur depending on the diameter, roundness, and straightness of the end portion of the steel pipe 1. When the state where the holding block 44 does not contact the steel pipe occurs, the restraint of the steel pipe 1 becomes insufficient. When the cutting force is increased, vibration occurs on the steel pipe 1. In addition, the concave-shaped holding block 44 has a so-called problem that the holding block 44 needs to be exchanged whenever the size of the steel pipe is changed, so that the operation rate cannot be improved. In view of the above-mentioned problems, it is an object of the present invention to provide a method for strongly restraining a steel pipe to be subjected to end-face processing by a jig so that machining defects do not occur, and even if the size of the steel pipe is changed, the steel pipe can be quickly restrained and operated. Steel tube end processing device with good end surface processing [Means for solving the above problems] In order to solve the above problems, the steel tube end processing device of the present invention is manufactured by a steel tube manufacturing line and cuts a steel tube into a predetermined length. The steel pipe end surface processing device is characterized in that the steel pipe clamp device provided at the front stage of the steel pipe end surface processing machine of the processing device is provided with a swing head mechanism that is driven forward and backward from the right angle 4 to the steel pipe at two forward and backward positions in the pipe axis direction. V-shaped holding block. (4) (4) 200412267 According to the steel pipe end-face processing device and the steel pipe holding device of the present invention having the above structure, the V-shaped holding block with a swing head mechanism is formed to drive the steel pipe forward and backward from the right angle 4 direction. Each of the four V-shaped gripping blocks is free from deformation or bending of the steel pipe, and can surely contact the steel pipe at two points with a V-shaped tapered surface. In this state, the steel pipe restrained by the four V-shaped holding blocks can maintain sufficient restraint even when a large cutting force is applied. In addition, in order to solve the above-mentioned problems, the steel pipe end surface processing device of the present invention is the same as the above-mentioned steel pipe end surface processing device, wherein the V-shaped holding blocks at the front and back 2 positions of the steel tube holding device are different from each other at right angles 4 directions Drive forward and backward towards the steel pipe. In this way, by forming a structure in which the aforementioned V-shaped retaining blocks at the two front and rear positions are driven toward and away from the steel pipe at right angles 4 directions different from each other, the V-shaped retaining blocks around the steel pipe do not interfere with each other. With the arrangement, even when a small-diameter steel pipe is being held, each V-shaped holding block can hold the steel pipe without interfering with each other. In addition, in order to solve the above-mentioned problems, the steel pipe end surface processing device of the present invention, like the steel pipe end surface processing device described above, wherein each of the V-shaped holding blocks of the steel tube holding device advances and retreats from a fixed-stroke hydraulic cylinder toward the steel tube. A part of the driving or the entire V-shaped holding block is driven forward and backward by a short-stroke hydraulic cylinder arranged in line with the fixed-stroke hydraulic cylinder. In this way, at least a part of the V-shaped holding block of the steel pipe holding device is driven by a fixed stroke hydraulic cylinder barrel and a short stroke hydraulic cylinder arranged in parallel with the same.-10- (5) (5) 200412267 The structure of the driving method, when the steel pipe is restrained by the V-shaped holding block, the V-shaped holding block moved by the fixed-stroke hydraulic cylinder can be brought into contact with the steel pipe at two points, and then each V-shaped The V-shaped tapered surface of the type holding block securely fixes the steel pipe contacted by two points with a short stroke hydraulic cylinder. Furthermore, with this two-stage driving method, even if the diameter of the steel pipe is different from the predetermined diameter, or if the steel pipe is deformed or bent, it can be reliably held. In addition, in order to solve the above-mentioned problems, the steel pipe end surface processing device of the present invention is the same as the steel pipe end surface processing device described above, wherein the hydraulic control system of each hydraulic cylinder of the steel pipe holding device is provided with a guide check valve. By providing a guide check valve in the hydraulic control system of each hydraulic cylinder of such a steel pipe holding device, even if a strong cutting force acts on the steel pipe, the guide check valve can be used to counteract the cutting force. Keep the steel pipe securely. [Embodiment] The following describes a steel pipe end surface processing apparatus according to the present invention with reference to the drawings. In the first figure, 16 is a holding device for a steel tube end surface processing device of this embodiment, and 16a and 16b are jig units provided at the front and rear end processing machines 8 constituting the tube axis direction of the holding device 16 and provided at the front and back. The other components are the same as those of the conventional device shown in FIG. 9 and are denoted by the same reference numerals as those in FIG. 9. Hereinafter, 16a is referred to as a front-side clamp unit, and 16b is referred to as a rear-side clamp unit. In Fig. 2 and Fig. 3, 17 is a casing on the chassis for installing two front-side clamps -11-(6) (6) 200412267 Yuan 16a, and rear-side clamp unit 16b. The front and rear two front clamping units 16a and 16b are two V-shaped holding blocks 18 each having a V-shaped tapered surface, and four V-shaped holding blocks 18 are made of steel pipe 1. It is provided in the casing 17 in an X shape to move forward and backward from the right angle 4 direction. The lower side of the front-side clamp unit 16a has a structure in which a middle arm 19a and a required fixed-stroke hydraulic cylinder 20 are connected between a V-shaped holding block 18 and a screw jack 22 is connected. On the lower side of the rear clamp unit 16b, the V-shaped clamping block 18 is held by the middle arm 19a and the required fixed-stroke hydraulic cylinder 20, and the short-stroke hydraulic cylinder 21 for adjustment is connected with the screw. Jack 22 is connected to the structure. However, the upper side of the front side clamp unit 16a and the upper side of the rear side clamp unit 16b are holding the middle arm 19b to connect the V-shaped holding block 18 to the long-distance hydraulic cylinder 23 in an in-line manner. In addition, the front-side clamp unit 16 a and the rear-side clamp unit 16 b can be exchanged and arranged so as to be opposite to each other. In FIGS. 4 to 6, each V-shaped holding block 18 is formed into two strands, and its two-stroke tip is formed on a V-shaped tapered surface and an arc surface is formed below, and the V-shaped holding block 18 is formed. The lower arc surface is connected to the arc surface guide 25 on the front end mounting portion 24 of the middle arm 19, and the swinging screw 26 and the nut 27 can move freely along the arc surface to the arc surface guide 25. The side is combined, and the structure is attached with a swing head mechanism. Further, in FIG. 6, the middle recessed portion of the arc surface guide 25 contains four small holding block fixing oils for engaging and disengaging the lower inner surface of each V-shaped holding block 18. The cylinder barrel 2 8 ′ allows the V-shaped gripping block 1 8 to be fixed at the position after the -12- (7) 200412267 slides horizontally. In addition, as shown in FIG. 5, the adjacent V-shaped holding pieces 18 in the right-angle 4 direction are arranged in two strands so as not to dry out each other, and even in the case of the small-diameter steel pipe 1, Prevent the V-shaped holding blocks from holding each other dry. However, the knot of this V-shaped holding block 18 has a known structure shown in Japanese Patent Application Laid-Open No. 7-1 6423 7 and the like. In Figure 7, the V-shaped holding block 18 is a fixed-stroke cylinder 20 for forward and backward driving, a short-stroke hydraulic cylinder 2 for adjustment 1, a long-stroke hydraulic cylinder 23, and a hydraulic cylinder for fixing the holding block. 28. The hydraulic cylinder 29 for stopping operation for the stopper 7 is connected to the pipeline at the hydraulic pressure source and the tank through the solenoid valves 30a, 30b, 30c 3 od, and 30e respectively, and at the electromagnetic 30a , 30b, 30c, 30d, 30e and the cylinders 20, 21, 23, 28, and the pipelines are respectively provided with a flow control valve 3 1 and a guide check valve 3 2 of this embodiment of the steel pipe having the above structure The end surface processing device, each of the hydraulic cylinders 2 of the side clamp unit 16a and the rear clamp unit 16b 2 〇 2 1, 2 3, 2 8, 2 9 are solenoid valves 3 of the control system shown in FIG. 7 The switching of a 3 0 e and the operation of the flow control valve 31 are controlled. The screw jack 22 is positioned at a predetermined stroke by the diameter of the steel pipe 1 in advance. The operation of the stopper operation hydraulic cylinder 29 by the stopper 7 will stop 7 and send it toward the steel pipe entry position in front of the end processing machine 8 'the steel pipe 1 is driven toward the end processing machine 8 by the positioning roller 3 Press it in and stop at the position where it comes into contact with the stopper 7. Next, two end portions' in the tube axis direction of the steel pipe 1 are held by the front-side clamp unit 16a and the rear-side clamp unit 16b. That is, firstly extend the front side to make the 18-cylinder cylinder valve 29 〇 the top borrow is fixed by the parking clamp -13- (8) (8) 200412267 fixed stroke of the lower side of the tool unit 16a and the rear clamp unit 16b The hydraulic cylinder 20 is raised to the lower V-shaped holding block 18. Next, 'the long-stroke hydraulic cylinder barrel 23 on the upper side of the front-side clamp unit 16a is extended, and the V-shaped holding block 18 on the front side is lowered. At this time, the front-side clamp unit 16a is formed by four V-shapes using the pressing force generated by the fixed-stroke hydraulic cylinder 20 and the screw jack 22 and the pressing force generated by the long-stroke hydraulic cylinder 23. The V-shaped tapered surface of the shape holding block 18 pushes the steel pipe 1 into it. When the V-shaped conical surface makes only one point contact with the steel pipe 1 due to the poor roundness or straightness of the steel pipe 1, the V-shaped holding block 1 8 is pressed in the lateral direction and guided along the arc surface 25 Swipe in a head-sliding manner, and by this action, all the V-shaped tapered surfaces of the four V-shaped gripping blocks 18 are brought into contact with the surface of the steel pipe 1 at two points. Next, the V-shaped holding block 18 on the upper side is lowered by the extended driving of the long-stroke hydraulic cylinder barrel 23 on the upper side of the rear clamp unit 16b, and it is raised by the extended driving of the short-stroke hydraulic cylinder barrel 21 on the lower side. V-shaped holding block 1 8 on the lower side. In this operation, as long as the lower two V-shaped gripping blocks 18 are pressed out, the stroke portion of the short-stroke hydraulic cylinder 21 for adjustment is adjusted, and the steel pipe is changed from the upper 2 and the lower V The V-shaped conical surface of the type holding block 18 is strongly held. When a single point of contact is made, the V-shaped holding block 18 is guided along the arc surface to slide in a swinging manner. Under this action, The four V-shaped gripping blocks 18 are all in a state where the V-shaped tapered surface and the surface of the tube 1 are in two-point contact. And 'At this time, there are four V-shaped holding blocks 18 on the front side and the rear side, regardless of the deformation and bending of the steel pipe 1, and the V-shaped tapered surface can surely make two points of contact with the surface of the steel pipe i -14- 200412267 〇). status. In this state, the hydraulic cylinder 1 for holding the holding block fixed to the arcuate surface guide 25 is extended to maintain the holding state of the steel pipe 1. And when cutting is started in this state, even if a large cutting force acts on the V-shaped holding block 18, the guide check valve 3 2 of the control system of FIG. 7 can be used to counteract the cutting force, and the steel pipe can be reliably made. be kept. The shortened driving of the hydraulic cylinder 29 for stopper operation causes the stopper 7 to move back to the side position, advances the end processing machine 8, and cuts the end of the steel pipe 1 into a predetermined opening, plane, etc., and then returns to the original position. Move back, open the front clamp unit 16a and the rear clamp unit 16b, and pull the steel pipe 1 out of the holding device 16 with the counter-drive of the positioning roller 3, and then send the steel pipe 1 to the exit side in sequence, and then again Repeat the same end machining. However, the long-stroke hydraulic cylinder 23 on the upper side of the front-side clamp unit 16 a and the rear-side clamp unit 16 b is controlled by using a detector to reduce the stroke between the clamped and non-clamped, so that four The V-shaped holding block 1 8 can reduce the time difference between the contact with the steel pipe 1 and can easily hold the steel pipe 1. Fig. 8 shows an example of a deformed or bent ordinary steel pipe 1 held by the front clamp unit 16a and the rear clamp unit 16b 挟, and the holding state of the steel pipe 1 is measured using pressure sensitive paper. 18 and the contact portion 36 of the steel pipe 1 are indicated by oblique lines. As shown in FIG. 8, regardless of the deformation or bending of the steel pipe 1, the 16 V-shaped tapered surfaces facing the eight V-shaped holding blocks 18 of the right-angle direction are in contact with the steel pipe 1 by the contact portions 36 respectively. The steel pipe 1 can be reliably held. The following effects can be obtained by assembling the holding device of this structure to an end surface processing device of a steel pipe -15- (10) 200412267. Even if the size of the steel pipe changes, there is no need to exchange the V shape. In addition, the swinging mechanism of each V-shaped holding block 18 and the V-shaped holding block 18 of the rear unit 16b are moved by cylinders arranged in two rows, even if the diameter of the steel pipe is different from the predetermined diameter. In the case of shaped or curved steel pipes, it is also possible to securely hold 16 points at the front and back of the tube axis direction, even if the cutting is performed strongly. With the clamp unit 16a at the front and back of the tube axis direction 2 The guide hydraulic check valve 32 is installed in the hydraulic system for driving, so that the holding force can be reliably maintained, and even if a large cutting force acts on the steel pipe during cutting, it will not move. As a result, a flat cutting surface can be obtained, and the product can be reduced without drastically improving the operating rate of the steel pipe end surface processing apparatus. [Effects of the Invention] The steel pipe end surface processing device of the present invention is characterized in that a steel pipe end surface processing device for making a predetermined length is made of a cut steel pipe made of a steel pipe manufacturing line, and is characterized in that: The clamp device is a V-shaped holding block with a swing head mechanism that is driven forward and backward from a right angle toward the steel pipe at two forward and backward positions in the pipe axis direction. According to the steel pipe end-processing steel pipe holding device of the present invention having the above-mentioned structure, since the V-shape with a swing head mechanism is driven to move forward and backward from the right angle 4 direction to the steel pipe, each of the 4 f-type holding blocks is a deformation of the steel pipe. Or it can be bent, and it can contact the steel pipe with a V-shaped tapered surface at two points. In this state, there are four V-shaped " ghost 18 side clamp barrels, which are driven to change and move. The holding rate of 16b has a vibrating yield, and it is constructed. The steel 4 direction device of the segment is held in place. The holding block 3 V is exactly shaped to hold -16- (11) (11) 200412267. The cutting force can also maintain sufficient restraint. Moreover, the steel pipe end surface processing device of the present invention is the same as the above-mentioned steel pipe end surface processing device, wherein the V-shaped holding blocks at the front and back 2 positions of the steel tube holding device are driven forward and backward from the mutually different right angle 4 directions toward the steel tube. . In this way, by forming a structure in which the aforementioned V-shaped retaining blocks at the two front and rear positions are driven toward and away from the steel pipe at right angles 4 directions different from each other, the V-shaped retaining blocks around the steel pipe do not interfere with each other. With the arrangement, even when a small-diameter steel pipe is being held, each V-shaped holding block can hold the steel pipe without interfering with each other. Moreover, the steel pipe end surface processing device of the present invention is the same as the above-mentioned steel pipe end surface processing device, wherein each of the V-shaped holding blocks of the steel pipe holding device is driven forward and backward by a fixed stroke hydraulic cylinder toward the steel pipe, and a part of it is driven. Or all the V-shaped holding blocks are driven forward and backward by a short stroke hydraulic cylinder tube arranged in line with the fixed stroke hydraulic cylinder tube. In this way, at least a part of the V-shaped clamping block of the steel tube holding device is driven by a two-stage driving method in which a fixed-stroke hydraulic cylinder and a short-stroke hydraulic cylinder arranged in parallel are driven forward and backward. When the V-shaped holding block is restrained, the V-shaped holding block moved by the fixed-stroke hydraulic cylinder can be brought into contact with the steel pipe at two points, and then the V-shaped tapered surface of each V-shaped holding block is removed. The 2-point contact steel pipe is securely fixed with a short stroke hydraulic cylinder. Moreover, with this two-stage driving method, even if the diameter of the steel pipe is different from the predetermined diameter, or if the steel pipe is deformed or bent, it can be reliably held -17- (12) (12) 200412267. In addition, the steel pipe end surface processing device of the present invention is the same as the above-mentioned steel pipe end surface processing device, wherein the hydraulic pressure control system of each of the steel pipe holding devices is provided with a guide check valve. With the hydraulic control system of each hydraulic cylinder of such a steel pipe holding device ~ A structure is provided with a guide check valve. Even if a strong cutting force acts on the steel pipe, the guide check valve can be used to counteract it. The cutting force holds the steel pipe securely. _ [Brief Description of the Drawings] [Figure 1] An overall side view of a steel pipe end surface processing apparatus according to an embodiment of the present invention. [Fig. 2] Π-Π line view of Fig. 1. [Fig. 3] A view of the gua-III line of Fig. 2. [Fig. 4] An enlarged explanatory view of part IV in Fig. 2. [Fig. 5] A view taken along the line V-V in Fig. 4. ® [Figure 6] VI-VI view of Figure 5. [Fig. 7] Hydraulic circuit diagrams of the devices shown in Figs. 1 to 3 and 6. [Fig. 8] An expanded view of the state of holding when the steel pipe is held by the apparatus according to the embodiment of the present invention using pressure sensitive paper. [Fig. 9] An overall side view of a steel pipe end surface processing device. [Fig. 10] X-X view of Fig. 9. [Fig. 11] Fig. 10 is a plan view. -18- (13) 200412267 [Fig. 12] Exploded view of the state of holding when the steel tube is held by a conventional device using pressure sensitive paper. [Description of drawing number] 1 Steel tube 2 Support area 3 Positioning roller 4 Steel tube end surface processing device 7 Stopper 8 End surface processing machine 16 Holding device 16a Front clamp unit 16b Rear clamp unit 17 Housing 18 V-shaped clamp tool 19a Middle suspension Rod 19b Intermediate suspension rod 20 Fixed stroke hydraulic cylinder 2 1 Short stroke hydraulic cylinder 22 Screw jack 23 Long stroke hydraulic cylinder 24 Tip mounting portion 25 Arc surface guide 26 Swing screw
19- (14)200412267 27 螺帽 28 挾持塊固定用油壓缸筒 29 停止器操作用油壓缸筒 3〇a 電磁閥 3〇b 電磁閥 3〇c 電磁閥 3 0d 電磁閥19- (14) 200412267 27 Nut 28 Hydraulic cylinder tube for holding block 29 Hydraulic cylinder tube for stopper operation 30a solenoid valve 30b solenoid valve 3c solenoid valve 3 0d solenoid valve
3 〇 e 電磁閥 3 1 流量控制閥 32 嚮導逆止閥 36 挾持塊及鋼管的接觸處3 〇 e Solenoid valve 3 1 Flow control valve 32 Guide check valve 36 Contact between holding block and steel pipe
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