1296950 九、發明說明： 【發明所屬之技術領域】 本發明係關於帶鋸機，詳言之，係關於令鋸條（saw blade)恢復上昇時，可令上述鋸條從材料離開的帶鋸機。 【先前技術】 帶鋸機的鋸條導件裝置如第7圖所示的情況，亦即， 在後夾鉗201與帶鋸條205通過的加工位置間，設有由固1296950 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a band saw machine, and more particularly to a band saw machine that allows the saw blade to exit the material when the saw blade is restored. [Prior Art] The saw blade guide device of the band saw machine is as shown in Fig. 7, that is, between the processing positions at which the rear clamp 201 and the band saw blade 205 pass,
定夾钳爪207F和移動夾鉗爪207M所構成的本體夾鉗2〇7 時，雖然藉由後夾鉗201即可使工件帶鋸條2〇5離開， 但疋’切斷材WA卻無法從帶鑛條2 〇 5離開。必須另外設置 將夾著π鑛條2 0 5而在切斷材WA侧可朝送料方向移動的爽 鉗，例如必須使前夾鉗2〇3(203F、203M)可朝送料方向移 動’因此，會增加成本及必須加大空間。 因此所開發出的裝置係如第1圖所示，參照第8圖說 明其原理。其構成不用使切斷材WA移動，只要使工件w 鲁移動，即可解決增加成本及必須加大空間的問題。亦即， 只要使後夾鉗201朝圖中的左侧（圖中的R方向）移動（距離 ED量），即可使工件w朝圖中的左側移動。再者，藉由使 後侧嵌入件267朝圖中的左侧移動。帶鋸條2〇5即可藉由 原有的恢復力從實線所示的狀態變成兩點鏈線所示的狀 態’而齒鋒會成為從工件w及切斷材WA離開的狀態。 上述後侧嵌入件267將形成於第1圖所示之鋸條導件 227之汽缸271的油壓抽出，彈簧279即可將活塞273朝 圖中的左側彈壓，故與該活塞273結合的上述後侧嵌入件 5 318039 1296950 267也會朝圖中的左側移動。此技術係揭示於日本專利公 開第2004-42210號公報（專利文獻1)。 然而，上述鋸條導件227係為可移動於上述汽缸271 及上述活塞273之軸向的構造，在有限的空間要形成上述 活塞271時，將無法使剖面積增大，推壓力會有限制，嵌 入件所形成之鑛條的把持力也會有所限制。 本發明係為了解決上述課題而開發者，其目的在於提 供-種即使利用剖面積較小的汽缸時，亦可確保大的鑛條 把持力之具有鋸條導件的帶鋸機。 【發明内容】 為了達成上述目的，本發明第！態樣之帶鑛機係包括 以下之構成··在利用帶鑛條將應加工的工件予以切斷加工 之切斷加工位置的後側，夾住上述工件的本體夹甜；使工 2進給送料之前後移動自如式送料夾鉗；具備捲繞有上述 f鑛條之驅動輪與從動輪的鑛條罩；將上述帶鑛條扭轉至 上述鋸條罩，同時引導帶鑛條移動的一對鑛條導件；在上 述，ir、=件的則端，於前後方向設有複數個的第1嵌入件 j第2肷^件’而上述第1嵌人件係以於前後方向移動自 而又Ϊ，令上述第1嵌入件擺動的第1擺動構件， 弟1甘入入件係固定於上述擺動構件；及令上述第1 構’而藉由上述第1驅動機構 槓桿原理使上述第1栽入件擺動，藉以使 述;二朝上述第2嵌入件接近/離開，以引導上 318039 6 1296950 係在㈣ΐ本發明第2態樣的帶媒機， 為☆，進-務叙上述弟1敗入件之前後移動的範圍，係 = 上述帶鑛條的齒鋒從工件的切斷面離開 的依:1態樣或第2態樣之本發明第3態樣 ,, 再风τ攸上述弟1驅動機構與上述第 1擺動構件的接點，至上述第1擺動構件之擺動中心為止 齡巨：，係大於從該第i擺動構件之上述擺動中心至上述 第1嵌入件的中心為止的距離。 依據依附上述第！態樣至第3態樣中任一態樣之本發 明第4態樣的帶鑛機，復包括以下之構成：在上述鑛條導 件的前端，朝前後方向設置複數個第i引導滾輪及第2引 導滚輪，而上述第i引導滾輪係以於前後方向移動自如的 方式設有複數個；令上述第1引導滾輪擺動的第2擺動構 件，在該第2擺動構件固定有上述第i引導滾輪；及令上 ，述第2擺動構件擺動的第2擺動機構，而藉由該第2驅動 機構的驅動力，湘槓㈣理使上述第丨㈣滾輪擺動， 而使上述第1引導滾輪朝上述第2引導滾輪接近/離開， 以引導上述帶鋸條。 1根據上述本發明之第1(態樣至第4態樣，即使在利用 較小剖面積之驅動機構的汽缸時，亦可確保較大的鑛條的 把持力’且可達成裝置的精簡化，同時可使切斷的精確度 提升。 【實施方式】 318039 7 1296950 以下，參ft?、圖式，說明本發明的實施形態。 首先’參照第4圖說明本案發明之實施形態之帶鋸機 的概要。依據本發明之帶鋸機的例如橫型帶鋸機1係由： 用以將工件W逐次以一定尺寸送料而切斷的切斷加工部 3、用以載置支持工件w的支持部5、及用以將工件w夾持 固定，同時進行一定尺寸送料的失鉗機構部7等所構成。 此處，第4圖所示F係上述帶鋸機的前侧，一般係操 作者所在位置之侧。又，R係上述帶鑛機的後侧。將延伸 於上述F侧及R侧的方向稱為又軸（圖中，X_AXIS)，以及 將與該X軸正交的方向稱為γ軸（圖中，Y_AXIS)。這是本 案發明說明書所有附圖之第i圖至第8圖中的共通符號。 ^述切斷加工部3係由帶鋸條9、鋸條罩u等所構 成第4圖中，該鋸條罩1!係以在右侧的鑛條罩部 左侧的鋸條罩部15,可旋轉自如地分別支持有驅動輪 從動輪19,同時驅動輪17與從動輪19則捲繞有上述帶鑛 私條9。上述右側的鋸條罩部13與左側的鑛條罩部π係以 標構件21 it結’並且在該樑構件21藉由複數個支持框“ 安裝有朝第4圖的左右方向延伸的連結框25。在該連結框 25的左側則設有可朝左右方向移動的可動鋸條導件㈣， 同時在連結框25的右侧設有固定鋸條導件27F。 ^以將工件W載置支持於上述支持…的複數個支持 滾輪29係以適當的間隔以旋轉自如的方式設置於框㈣ 上，同時在該框架31的前方，即在第4圖的右方配置有工 作台aable)33。工件w係從χ轴方向（第4圖的左右 318039 1296950 的後方朝向x軸後方向的前方送料，且藉由夹钳機構部7 夾持固定。上述各支持滾輪29係跨涉工件w之送料路徑的 大致全長，以旋轉自如的方式被支料與框架31為另^ 置的滾輪框架3 5。 又 . 上述夾鉗機構部7係由本體夾鉗37與送料夾鉗39所 •構成。本體央鉗37係由本體固定夾鉗爪41、與對該本體 '固定夹鉗爪41朝接近/離開方向往復移動自如的本體可 動夾鉗爪43所構成，且配設於上述帶鋸條9之切斷位 響正前方位置。 、 $ 一方面，送料夾钳39係與本體夾钳37同樣，由送 料固疋夾钳爪45與送料可動夾钳爪47所構成，而該送料 夾鉗39係以在本體夾J#37的方向（前後方向）接近/離開 自如（進退自如）的方式構成。又，送料可動夾鉗爪47係藉 像油壓汽缸的流體壓機構49，而形成在送料固定夾钳爪 的方向進退自如。該流體壓機構49係以藉由夹甜床Η朝 _丫軸方向移動自如的方式支撐。 上述可動鋸條導件27M、固定鋸條導件27F係如第2 圖所示，在引導框架53的下端設有引導本體55。 在上述引導本體55的下部，作為第2嵌入件的前侧嵌 入件59係藉由螺栓61固定於上述引導本體55的下部。再 者，在上述前侧嵌入#59的後方，作為第i嵌入件的後侧 肷入件77係以相對於上述前侧嵌入件63，在引導本體55 的下部剞後移動自如的方式設置。 第5圖及第6圖係將上述引導本體55加以放大的部分 318039 9 1296950 .』視圖。如第5圖及第6圖所示，上述引導本體 -方（第5圖及第6圖的右侧）形成有前側方塊部57。，、刖 引導嵌入件77係藉螺栓79固定於以設置於上述 …•上述第】，73為中心而可擺動的第1擺動構件 、（第的左*構件75擺動時，—起擺動於前後方向 、二H)。在上述引導本體55的上述前側方塊 狂9「内第1驅動機構的第1汽缸91與可於該第1 •容心成：塞99。此外’上述擺動構件75係以收 谷於屯成於上述引導本體55之凹部67的方式構成。 =力油經由管路9 7、9 5流入上述第丨汽缸 第/^成於上述活塞99前端的柄部⑽_係 於”1轳二Γ冓件75在第5圖中朝逆時鐘方向擺動。由 動=擺動構件75的下端在第4圖中係朝右方擺動而移 近/離門人件77可相料上述前側嵌人件59接 •起作動汗J述後側嵌入件77與上述前側嵌入件59 -•咫作動，-邊夾持上述帶鋸條9，一邊引導。 能時另面’#上述狂室93㈣屢力油材流出的狀 固她牛88設置於上述引導本體55賴 動構件75，而使該擺動構件75在第5圖中 嵌入件5里9離開擺。動’且可令上述後側嵌入件77從上述前側 退避U此方式’如第8圖所示，若使工件W 線所Γ時’則上述帶鑛條9會想要朝第5圖中兩點鍵 9的二之：態的旋動方向恢復/復原而旋動，故該帶鑛條 的齒鋒會如第8圖所示亦從切斷材 318039 10 1296950 帶鋸條9的齒鋒可從工件w及切斷材WA的兩邊離開，且即 _使令帶鋸條9恢復上升，鋸齒也不會缺齒。 在此，彳之作為上述第1驅動機構之第丨汽缸91之活塞 99的柄部101與上述第〗擺動構件75的接點，至上述第^ .擺動構件75之上述樞軸73的中心（擺動中心）為止的距 /離，係較大於從該樞軸73的中心至上述後側嵌入件”的 中心為止的距離。因此’依據槓桿原理，即使藉由作為上 述第1驅動機構之上述第！汽缸91㈣小推麗力，亦可將 上述後側嵌入件77對上述前側嵌入件59強力推壓。所以， 可將上述第1汽缸91的剖面積設計得較小，且可謀求將裝 置小型化/精簡化（C〇mpact)。 又，如第6圖所示，在上述引導本體55的下部，作為 第2引導滾輪的前側引導滾輪63係藉螺栓邸固定於上述 引導本體55的下部。在上述前側引導滚輪⑽的後方，作 為第1引導滾輪的後側引導滾輪83，係以對上述前侧引導 φ滾輪63侧前後移動自如（接近^/離開自如）的方式設置。 上述後側引導滾輪83係藉螺栓85固定於以設置於上 述引導本體55的樞軸73為中心而可擺動的第2擺動構件 81，當上述第2擺動構件81擺動時，即會一起朝前後方向 擺動。在上述引導本體55的上述前側方塊部57，設有作 為第2驅動機構的帛2汽幻03與可於該第2汽缸1〇3内 滑動的活塞1G7。此外’上述擺動構件81係以收容於形成 於上述引導本體55之凹部69的方式構成。 當壓力油經由管路97、95流入上述第2汽缸1〇3的汽 318039 11 1296950 ^ 才形成於上述活塞1 〇 7前端的柄部10 9會令上述 弟2擺動構件81在第6圖中朝逆時鐘方向擺動。由於該第 、動構件81的下端在第5圖中係朝右方擺動而移動，故 上述後側引導滾輪83可相對於上述前側引導滾輪⑽接近 ·./離開，且上述後側引導滾輪83與上述前側引導滾輪63 一起作動，而引導上述帶鋸條9。 * μ 士另一方面，當上述汽缸室95内的壓力油為可流出的狀 _怨時，以固定構件9〇設置於上述引導本體55内的彈簧89 會彈壓上述擺動構件81，而可使該擺動構件81在第6圖 中朝順日寸鐘方向擺動，且可使上述後侧引導滾輪83從上述 刖侧引導滾輪63離開。以此方式，如第8圖所示，若使工 件w退避到後方時，則上述帶鋸條9會想要朝第6圖中兩 點鏈線所示的狀態恢復/復原而旋動，故該帶鋸條9的齒 鋒亦如第8圖所示從切斷材WA離開。因此，上述帶鋸條9 的齒鋒可從工件W及切斷材WA的兩邊離開，且即使令帶鋸 φ條9恢復上升，鑛齒也不會缺齒。 此外，日本專利申請第2005-077674號（2005年3月 17曰申請）的所有内容，已參照並納入本申請案說明書。 本發明並不限定於上述發明之實施形態的說明，藉由 進行適當的改變/改良/變更，也可以其他各種態樣來實 施。 【圖式簡單說明】 第1圖係習知之帶鋸機之鋸條導件的侧面圖。 第2圖係本發明之實施形態之帶鋸機在第4圖中之π 318039 12 1296950 箭號所示之鋸條導件的側面放大圖，藉由於乂日丨山 ^ t 符田别侧嵌入件與後 侧嵌入件引導帶鋸條移動的狀態圖。 第3圖係本發明之實施形態之帶鋸機的固定鑛條導 件、可動鋸條導件的正面放大圖。 第4圖係帶鋸機之例如橫型帶鋸機的斜視圖。 ‘ 第5圖係第3圖之V-V箭號所示的剖面圖。 ’ 第6圖係第3圖之VI-VI箭號所示的剖面圖。 m 第7圖係說明切斷後以本體夾钳、送料夹钳、前夾錯 署令工件移動的狀態之平面圖。 第8圖係說明令工件移動，使帶鋸條的前端與工件及 從工件切斷之切斷材分隔的狀態之平面圖。 【主要元件符號說明】 1 帶鋸機 3 切斷加工部 5 支持部 7 夾鉗機構部 9 帶鑛條 11 鋸條罩 13 右侧的鋸條罩部 15 左侧的鋸條罩部 17 驅動輪 19 從動輪 21 樑構件 23 支持框 25 連結框 27F 固定鋸條導件 27M 可動鋸條導件 29 支持滚輪 31 框架 33 工作台 35 滾輪框架 37 本體夾钳 39 送料爽甜 41 本體固定夾甜爪 43 本體可動夾鉗爪 45 送料固定夾甜夾 318039 13 1296950 送料可動夾鉗夾 49 47 51 夾钳床 55 引導本體 59 前側嵌入件 63 前側嵌入件 67 凹部 73 柩轴 77 後侧嵌入件 •δΐ 第2擺動構件 85 螺栓 88 固定構件 90 固定構件 93 汽缸室 99 活塞 103 第2汽缸 φ 109 柄部 205 帶鋸條 207Μ 移動夾钳爪 227 鋸條導件 271 汽缸 279 彈簧 WA 切斷材 流體壓機構 53 引導框架 57 前側方塊部 61 螺栓 65 螺栓 69 凹部 75 第1擺動構件 79 螺栓 83 後側引導滾輪 87 彈簧 89 彈簧 91 第1汽缸 95、97管路 101 柄部 107 活塞 201 後夾鉗 207F 固定夾钳爪 203、203F、203Μ 前夾鉗 267 後侧嵌入件 273 活塞 W 工件 14 318039When the clamp jaws 207F and the clamp jaws 207M are configured to move the body clamps 2〇7, the workpiece band saw blades 2〇5 can be separated by the rear clamps 201, but the cut-off material WA cannot be removed from Take the strip 2 〇5 to leave. It is necessary to additionally provide a cooling tong that sandwiches the π-mine bar 2 0 5 and can move in the feeding direction on the cutting material WA side, for example, the front clamp 2 〇 3 (203F, 203M) must be moved in the feeding direction. Will increase costs and must increase space. Therefore, the device developed is as shown in Fig. 1, and the principle is explained with reference to Fig. 8. The configuration does not require the cutting material WA to move, and as long as the workpiece w is moved, the problem of increasing the cost and increasing the space must be solved. That is, as long as the rear clamp 201 is moved to the left side (the R direction in the drawing) in the drawing (the distance ED amount), the workpiece w can be moved to the left side in the drawing. Furthermore, by moving the rear side insert 267 toward the left side in the drawing. The band saw blade 2〇5 can be changed from the state indicated by the solid line to the state indicated by the two-dot chain line by the original restoring force, and the tooth front is separated from the workpiece w and the cutting material WA. The rear side insert 267 extracts the hydraulic pressure of the cylinder 271 formed in the saw blade guide 227 shown in Fig. 1, and the spring 279 can press the piston 273 toward the left side in the figure, so that the rear portion of the piston 273 is combined with the piston 273. The side insert 5 318039 1296950 267 will also move to the left in the figure. This technique is disclosed in Japanese Laid-Open Patent Publication No. 2004-42210 (Patent Document 1). However, the blade guide 227 is configured to be movable in the axial direction of the cylinder 271 and the piston 273. When the piston 271 is to be formed in a limited space, the sectional area cannot be increased, and the pressing force is limited. The holding force of the mineral bars formed by the inserts is also limited. The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a band saw having a blade guide which can secure a large bar holding force even when a cylinder having a small cross-sectional area is used. SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is the first! The belt-type mining machine system includes the following components: · On the rear side of the cutting processing position where the workpiece to be processed is cut by the strip, the body of the workpiece is sandwiched with sweetness; a movable free-feeding clamp before and after feeding; a mine strip cover with a driving wheel and a driven wheel wound with the above-mentioned f-mine; twisting the above-mentioned strip to the saw blade cover, and guiding a pair of ore with a moving strip In the above, at the end of the ir and the y, a plurality of first inserts j and second members are provided in the front-rear direction, and the first embedded member is moved in the front-rear direction. a first swinging member for swinging the first insert, wherein the first inserting member is fixed to the swinging member; and the first structure is configured to cause the first implant by the first driving mechanism lever principle The swinging of the piece is used to make the description; the second insert is approached/departed to guide the upper 318039 6 1296950 in the fourth embodiment of the present invention, which is the second embodiment of the present invention. The range of movement before and after the piece, the above-mentioned cutting of the tooth with the ore strip from the workpiece According to the third aspect of the present invention, the first aspect or the second aspect of the present invention, the contact point between the driving mechanism of the first brother 1 and the first swinging member, to the swing center of the first swinging member The age is greater than the distance from the swing center of the i-th swing member to the center of the first insert. According to the above mentioned! The belt ore machine according to the fourth aspect of the present invention, in any aspect of the third aspect, further comprises the following configuration: at the front end of the above-mentioned ore guide, a plurality of ith guide rollers are disposed in the front-rear direction The second guide roller is provided with a plurality of the i-th guide rollers that are movable in the front-rear direction, and the second swing member that swings the first guide roller has the ith guide fixed to the second swing member. a second swinging mechanism for swinging the second swinging member, and the driving force of the second driving mechanism causes the second (four) roller to swing, and the first guiding roller is turned toward The second guide roller approaches/leaves to guide the band saw blade. (1) According to the first aspect (the fourth aspect to the fourth aspect of the present invention, even when a cylinder of a driving mechanism having a small sectional area is used, a large holding force of the metal strip can be ensured and the device can be simplified. At the same time, the accuracy of the cutting can be improved. [Embodiment] 318039 7 1296950 Hereinafter, an embodiment of the present invention will be described with reference to the drawings and drawings. First, a band saw machine according to an embodiment of the present invention will be described with reference to FIG. An outline of a band saw machine according to the present invention, for example, is a cross-cutting machine 1 for cutting a workpiece W by feeding a workpiece at a predetermined size, and supporting the workpiece w. The portion 5 and the caliper mechanism portion 7 for holding and fixing the workpiece w while feeding at a constant size are formed. Here, the F-type front side of the band saw machine shown in Fig. 4 is generally an operator. Further, R is the rear side of the belt conveyor. The direction extending from the F side and the R side is referred to as a re-axis (X_AXIS in the figure), and the direction orthogonal to the X axis is called Is the γ axis (in the figure, Y_AXIS). This is the drawing of all the drawings of the present invention. The common symbol in the drawings from Fig. 8 to Fig. 8. The cutting processing portion 3 is composed of a band saw blade 9, a blade cover u, and the like. In the fourth figure, the blade cover 1 is attached to the mineral cover portion on the right side. The saw blade cover portion 15 on the left side rotatably supports the drive wheel driven wheel 19, respectively, while the drive wheel 17 and the driven wheel 19 are wound with the above-mentioned belt private strip 9. The right side saw blade cover portion 13 and the left side The strip cover portion π is formed by the label member 21 and the joint member 25 is attached to the beam member 21 by a plurality of support frames. The left side of the joint frame 25 is provided on the left side of the joint frame 25 There is a movable saw blade guide (4) movable in the left-right direction, and a fixed blade guide 27F is provided on the right side of the joint frame 25. ^ To mount the workpiece W with a plurality of support rollers 29 supported by the above-mentioned support ... The space is rotatably provided on the frame (4), and a table aable 33 is disposed in front of the frame 31, that is, on the right side of the fourth figure. The workpiece w is from the χ axis direction (the left and right of Fig. 4) The rear of the 318039 1296950 is fed toward the front in the x-axis rear direction and is held by the clamp mechanism portion 7. Each of the support rollers 29 is rotatably supported by the support frame and the frame 31 as a separate roller frame 35 in a substantially full length of the feed path of the workpiece w. The clamp mechanism portion 7 is The main body clamp 37 and the feed clamp 39 are configured. The main body clamp 37 is a body movable clamp jaw 41 that is fixed to the main body 'fixing jaw 41 in the approaching/leaving direction. 43 is disposed at a position directly in front of the cutting position of the band saw blade 9. On the one hand, the feeding clamp 39 is similar to the body clamp 37, and is configured by a feed fixing jaw claw 45 and a feed movable clamp. The jaws 47 are formed, and the feed jaws 39 are configured to be close to/away from the direction (front-rear direction) of the body clamp J#37. Further, the feed movable jaws 47 are formed in the direction of the feed fixing jaws by the fluid pressure mechanism 49 of the hydraulic cylinder. The fluid pressure mechanism 49 is supported by being movable freely in the direction of the 丫 axis by the sweet bed. The movable saw blade guide 27M and the fixed blade guide 27F are provided with a guide body 55 at the lower end of the guide frame 53 as shown in Fig. 2 . In the lower portion of the guide body 55, the front side insert 59 as the second insert is fixed to the lower portion of the guide body 55 by bolts 61. Further, the rear side intrusion 77 as the i-th insert is provided so as to be movable rearwardly from the lower portion of the guide body 55 with respect to the front side insert 63. Fig. 5 and Fig. 6 are views showing a portion of the above-mentioned guide body 55 enlarged by 318039 9 1296950. As shown in Fig. 5 and Fig. 6, the guide body - side (the right side of Figs. 5 and 6) is formed with a front side block portion 57. The 刖 guide insert 77 is fixed to the first oscillating member that is swingable around the above-mentioned ..., the above-mentioned seventh, 73 by the bolts 79. (When the left left member 75 swings, it swings before and after Direction, two H). In the front side of the guiding body 55, the first cylinder 91 of the first driving mechanism and the first cylinder 91 can be formed into a plug: 99. In addition, the swinging member 75 is closed to the valley. The concave portion 67 of the guiding body 55 is configured to be configured. The force oil flows into the first cylinder of the first cylinder via the conduits 9 7 and 9 5, and the shank portion (10) is formed at the front end of the piston 99. 75 swings in the counterclockwise direction in Fig. 5. The lower end of the oscillating member 75 is swung to the right in FIG. 4, and is moved closer to/from the door member 77. The front side inlay member 59 is connected to the front side of the engaging member 59. The rear side insert member 77 is embedded with the front side. Pieces 59 -• 咫 , , - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - When the other side of the above-mentioned madroom 93 (four) repeatedly oily material flows out, the cow 88 is disposed on the guiding body 55 to move the member 75, and the swinging member 75 is separated from the pendulum in the insert 5 of FIG. . And the rear side insert 77 can be retracted from the front side by the way U. As shown in Fig. 8, if the workpiece W line is smashed, then the strip 9 will be directed toward the second figure. The two keys of the point key 9: the rotation direction of the state is restored/reset and rotated, so the tooth front of the strip will be as shown in Fig. 8 from the cutting edge of the cutting piece 318039 10 1296950. Both sides of the workpiece w and the cutting material WA are separated, that is, the belt saw blade 9 is returned to rise, and the serrations are not missing. Here, the contact point between the shank portion 101 of the piston 99 of the second cylinder 91 as the first drive mechanism and the first swinging member 75 is at the center of the pivot shaft 73 of the first swinging member 75 ( The distance to/from the center of the swing is larger than the distance from the center of the pivot 73 to the center of the rear insert. Therefore, according to the principle of the lever, even by the above-described first drive mechanism The cylinder 91 (4) is small in tension, and the rear insert 77 can be strongly pressed against the front insert 59. Therefore, the cross-sectional area of the first cylinder 91 can be designed to be small, and the device can be made small. Further, as shown in Fig. 6, in the lower portion of the guide body 55, the front side guide roller 63 as the second guide roller is fixed to the lower portion of the guide body 55 by bolts. The rear side guide roller 83 as the first guide roller behind the front side guide roller (10) is provided so as to be movable forward and backward (close to/off) to the front side guide φ roller 63 side. Scroll wheel 83 The second swinging member 81 that is swingable about the pivot shaft 73 provided on the guide body 55 is fixed by the bolts 85. When the second swinging member 81 swings, the second swinging member 81 swings together in the front-rear direction. The front side block portion 57 of the main body 55 is provided with a 汽2 Cyclone 03 as a second drive mechanism and a piston 1G7 slidable in the second cylinder 〇3. The 'swing member 81 is housed and formed therein. The concave portion 69 of the guiding body 55 is configured as described above. When the pressurized oil flows into the second cylinder 1〇3 through the pipes 97 and 95, the shank portion 10 9 formed at the front end of the piston 1 〇7 is ordered. The second swinging member 81 swings in the counterclockwise direction in Fig. 6. Since the lower end of the first movable member 81 is swung rightward in Fig. 5, the rear guide roller 83 can be opposed to the above. The front side guide roller (10) approaches/., and the rear side guide roller 83 moves together with the front side guide roller 63 to guide the band saw blade 9. On the other hand, when the pressure oil in the cylinder chamber 95 is Flowable form The spring 89 provided in the guiding body 55 by the fixing member 9 is biased by the swinging member 81, and the swinging member 81 can be swung in the direction of the clock in the sixth drawing, and the rear side can be guided. The roller 83 is separated from the above-described side guide roller 63. In this manner, as shown in Fig. 8, when the workpiece w is retracted to the rear, the band saw blade 9 is intended to be shown by the two-dot chain line in Fig. 6. The state of the band saw blade 9 is also rotated, so that the tooth front of the band saw blade 9 is also separated from the cutting material WA as shown in Fig. 8. Therefore, the tooth front of the band saw blade 9 can be obtained from the workpiece W and the cutting material WA. The two sides leave, and even if the band saw φ strip 9 is restored, the ore teeth will not be missing. In addition, all contents of Japanese Patent Application No. 2005-077674 (filed on March 17, 2005) are incorporated herein by reference. The present invention is not limited to the description of the embodiments of the invention described above, and various modifications may be made without departing from the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view of a saw blade guide of a conventional band saw machine. Fig. 2 is an enlarged side elevational view of the saw blade guide of the embodiment of the present invention in the figure π 318039 12 1296950 shown in Fig. 4, by the side of the 丨 丨 ^ ^ ^ A state diagram that guides the movement of the band saw blade with the rear side insert. Fig. 3 is an enlarged front elevational view showing a fixed ore guide and a movable saw guide of the band saw according to the embodiment of the present invention. Figure 4 is a perspective view of a band saw machine such as a horizontal band saw. ‘ Figure 5 is a cross-sectional view of the V-V arrow in Figure 3. Figure 6 is a cross-sectional view of the arrow VI-VI of Figure 3. m Figure 7 is a plan view showing the state in which the workpiece is moved by the body clamp, the feed clamp, and the front clamp. Fig. 8 is a plan view showing a state in which the workpiece is moved so that the leading end of the band saw blade is separated from the workpiece and the cutting material cut from the workpiece. [Description of main component symbols] 1 Band sawing machine 3 Cutting processing section 5 Supporting section 7 Clamping mechanism section 9 Striped strip 11 Saw blade cover 13 Saw blade cover part 15 on the right Side of the saw blade cover part 17 Drive wheel 19 Follower wheel 21 Beam member 23 Support frame 25 Link frame 27F Fixing blade guide 27M Movable blade guide 29 Support roller 31 Frame 33 Table 35 Roller frame 37 Body clamp 39 Feeding sweet 41 Body fixing clip Sweet claw 43 Body movable jaw claw 45 Feeding clamp clips 318039 13 1296950 Feeding movable jaws 49 47 51 Clamping bed 55 Guide body 59 Front side insert 63 Front side insert 67 Recessed part 73 Truss 77 Back side inserts δΐ 2nd oscillating member 85 Bolt 88 Fixing member 90 Fixing member 93 Cylinder chamber 99 Piston 103 2nd cylinder φ 109 Handle 205 Band saw blade 207Μ Moving jaw claw 227 Blade guide 271 Cylinder 279 Spring WA Cutting fluid pressure mechanism 53 Guide frame 57 Front side block 61 Bolt 65 Bolt 69 Recessed portion 75 First swinging member 79 Bolt 83 Rear side guide roller 87 Spring 89 Spring 91 First cylinder 95, 97 Piping 101 Handle 107 Piston 201 Rear clamp 207F Fixed clamp jaws 203, 203F, 203Μ Front clamp 267 Rear insert 273 Piston W Workpiece 14 318039