1353919 六、發明說明： 【發明所屬之技術領域】 本發明係關於-種管切刀，尤指一種應用管件切割用 途之刀具。 【先前技術】 在管件加工作業，除為設計上的需要，對管件特定的 部位施以彎管等形狀改變之加工步竭外，編依管件設 汁之長度所進行之切割步餓 所、 〜 」步驟’所述的切割步驟可結合於彎 管步驟接續進行，亦可於管彎 步驟。 e仵考曲加工後，再施以切割之 針對前述管件切割步驟，目前 鋸片以鋸切管件，或 '、冑裝置驅動之 轉及施壓而切斷管件。 片破驅動而沿管件外周面旋 惟前述以鋸刀鋸切管件之方 斷管件之方式，於;^ 或是以圓形刀片旋轉切 、吕件的切割過裎中 偏大，而對管件切 中，因切割時所受阻力 J 1卞茶不順利，从 毛邊且毛邊偏多，g會使管件切斷面易生 不利於管件品質。 【發明内容】1353919 VI. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a tube cutter, and more particularly to a tool for cutting a pipe. [Prior Art] In the processing of pipe fittings, in addition to the design requirements, the processing of the shape of the pipe is changed by the shape of the pipe, and the cutting process is carried out according to the length of the pipe. The cutting step described in the step can be carried out in conjunction with the bending step, or in the tube bending step. After the e-curving is processed, the cutting is performed for the cutting step of the pipe. At present, the saw blade is cut by cutting the pipe fitting, or ', the turning device and the pressing force to cut the pipe. The piece breaks the drive and rotates along the outer peripheral surface of the pipe piece in the manner of cutting the pipe piece by the saw blade to cut the pipe piece, or is rotated by a circular blade, and the cutting piece of the piece is too large, and the pipe piece is cut, Because the resistance caused by cutting J 1 卞 tea is not smooth, from the burrs and more burrs, g will make the cut surface of the pipe is prone to the quality of the pipe. [Summary of the Invention]
本發明之主要B 要目的在於提供一 ，改善先前既有管切刀於與 種官切刀，希藉此設計 點。 切割不順利而易生毛邊之缺 為達成前揭目的， 刃位於該管切刀前端 矣月所设计之官切刀係包括一刀 該穿刺段後端之切割俨該刀刀包含一穿刺段以及一銜接於 J353919 該穿刺段前端形成一尖部，後端兩側形成概為對稱狀 之斜刃邊，該穿刺段後端之寬度大於前端之寬度； 該切割段兩側形成概為對稱之弧曲刃邊，該切割段後 細寬度大於刖鈿寬度，且該二弧曲刃邊分別銜接該二斜刃 邊之後端。 糟由上述官切刀設計，使其可連接於驅動裝置上，並 以前段的刀刃應用於管件切割用&，該管切刀為驅動裝置 推動進行管件切割過程中，㈣切刀先以其刀刃前端之穿 刺段較小徑尖部可以應力集中方式直接自管件-側刺入立 官壁，接續以相對應斜刀段配合後端切割段兩侧弧曲刃邊 所構成之多段刃邊循序漸進地割斷該f件之整個管壁，使 其能有效降低切割管件之阻力’如此，不僅可提高該管切 刀切割管件之順暢性，並能減少管件切割面之毛邊生成， 故本發明能提供-項有助於管件切割作f順利進行之管切 刀設計。 φ 本發明之次一目的係 續於該切割段之後，該延 延伸刃部前端銜接該切割 口’藉此’於管切刀切割 管壁時’可利用該斷削凹 斷管件所產生殘屑，再接 其更能減少殘屑繼續延伸 【實施方式】 如第—、三圖所示， 具體可行的較佳實施例， 令該刀77進一舟κ 芡包括一延伸段接 伸#又兩側形成延伸刀部，且該二 段二弧曲刃邊處分別形成斷削凹 g件過程中’當該斷削凹口抵達 口的段差以及其端緣的尖刃而切 續以刀刃切割管件其餘管壁，使 ’而減少毛邊。 係分別揭示本發明其 +贫明官切刀之數種The main purpose of the present invention is to provide an improvement in the prior art of the existing cutters and the design of the cutters. The lack of cutting and the burr is easy to achieve. The blade is located at the front end of the tube cutter. The official cutting knife system designed by the moon includes a knife at the back end of the piercing section. The knife includes a puncture section and a Connected to J353919, a tip portion is formed at the front end of the puncture section, and a symmetrical oblique edge is formed on both sides of the rear end, and the width of the rear end of the puncture section is larger than the width of the front end; the two sides of the cutting section form a symmetrical arc a cutting edge, the fine width of the cutting section is greater than the width of the crucible, and the two arc curved edges respectively engage the rear ends of the two inclined edges. The above-mentioned official cutter is designed to be connected to the driving device, and the cutting edge of the previous section is applied to the pipe cutting & the pipe cutter is used for driving the pipe cutting process, and (4) the cutting knife first uses The smaller diameter tip of the puncture section at the front end of the blade can be directly punctured from the pipe-side into the vertical wall by the stress concentration method, and the multi-segment edge formed by the corresponding curved blade segment and the curved edge of the opposite end cutting segment is successively formed. The entire pipe wall of the f-piece is cut to make it effectively reduce the resistance of the cutting pipe member. Thus, not only the smoothness of the pipe cutter cutting pipe but also the burr formation of the pipe cutting surface can be improved, so the invention can provide - The item helps the tube cutting to be the smooth design of the tube cutter. φ The second object of the present invention is that after the cutting section, the front end of the extended cutting edge engages the cutting opening 'by this' when the pipe cutter cuts the pipe wall, the scrap generated by the broken pipe can be utilized And then it can further reduce the debris and continue to extend. [Embodiment] As shown in the first and third figures, a concrete and feasible preferred embodiment, the knife 77 into a boat κ 芡 includes an extension section extension # and both sides Forming an extension knives, and the two sections of the two-arc curved edge respectively form a section of the cutting recess, and when the cutting recess reaches the opening, and the edge of the edge is cut, the cutting piece is cut with the cutting edge The wall of the tube makes 'while reducing the burrs. Revealing the several types of the invention;
由該些圖中可' u A u T j以侍知，本發明之 [S] 4 1353919 管切刀係—剛性材料製的片狀體，該管切刀包含一刀刃 (10)及—連接端部（20)，該刀刃（1〇)係位於該管切刀之前端 ，該連接端部（20)係於該管切刀之後端，提供驅動裝置連 接之部位。 如第一至四圖所示，該刀刀（1〇)包含一穿刺段（11)以 及一銜接於該穿刺段（11)後端之切割段（12)，該穿刺段 於刖端形成一尖部（111)’於後端兩側形成概為對稱狀之斜 邊（114)使忒穿刺段（11)後端之寬度大於前端之寬度， 於本較佳實施例中，該尖部（111)具有一尖端（112)以及一 銜接於該尖端（112)較大徑端之平直部（113)，再以該平直 部（11 3)銜接該切割段（彳2)。 前述之尖端（11 2)夾角介於50。〜70。之間為佳，該二 斜刀邊（114)之夾角介於5〇。~7〇。之間為佳，該切割段 (12)兩側形成概為對稱之弧曲刃邊（121) ’所述弧曲刃邊 (121)可為外凸圓弧狀（如第二、四圖所示者），或可為内 凹圓弧狀（如第五圖所示者）等設計’該切割段（1 2)後端 寬度大於前端寬度，且該二弧曲刃邊（121)分別銜接該二斜 刀邊（114)之後端。 如第三、四圖所示，本創作管切刀之刀刀（1〇)尚可進 一步包括一延伸段（13)接續於該切割段（12)之後，該延伸 段（13)兩側形成延伸刃部（131)，且該二延伸刀部（131)前 端銜接該切割段（12)二弧曲刃邊（121)處分別形成斷削凹口 (132)，所述延伸刃部〇 μ)可包括一平刃邊以及接續 平刃邊（133)之後弧曲刃邊（134) ’且延伸刀部（131)於該後 弧曲刃邊（134)之區段形成後端寬度大於前端寬度，所述後 1353919 弧曲刃邊（134)可為外凸的圓弧狀設計。 如第一、二圖所示，本創作管切刀尚可進一步於該切 割段（12)之後的區段形成寬度大於切割段（12)之本體段（3〇) ’該本體段（30)銜接切割段（12)後端之前側邊形成垂直於 管切刀中心線的直邊（31)。 如第二、四圖所示’本創作管切刀尚可進一步於該延 伸刃部（131)之後的區段為—寬度大於延伸刃部（131)之本 體段（30)，該本體段（3〇)銜接延伸刃部（131)後端之前側邊 形成垂直於管切刀中心線的直邊。 本發明藉由前述管切刀設計’當其應用於管件切割作 業時，以第一圖所示管切刀較佳實施例為例，其適用於小 管徑之管件（50)切割，如第六圖所示，其中該管切刀/為驅 動裝置驅動切割管件時，係先以前端穿刺段（1彳）之尖部 (1 11)穿入管件（50)—側管壁内，接續以兩側斜刃邊〇 14) 漸進副開官壁，之後，再利用後端兩側之弧曲刃邊（彳2彳）漸 進割開，並於該尖部（11彳）抵達管件（5〇)另一側管壁時，再 以則述之先刺穿再漸進割開管壁方式至管件（5〇)被切割為 止。 如第二圖所不管切刀較佳實施例，其應用於管件切割 作業時，係適於較大管徑之管件切割，當該管切片為驅動 裝置驅動切割管件時，士。第七、八、九圖所示，其係先以 前端穿刺段（11)之尖部（1 11)穿入管件（5〇)一側管壁内接 續以兩側斜刃邊（114)漸進割開管壁，之後’再利用後端兩 側之弧曲刃邊（121)接續漸進割開管壁，並於該管切刀之斷 削凹口（132)抵達管壁時，即利用斷削凹口（132)的段差而 1353919 於斜刀邊（114)之端緣所形成尖刃切斷管件（50)所生成的殘 肩，之後，於該尖部⑴υ抵達管件另—側管壁時再以前 述先刺：再_開管壁方式至管件(5〇)被切割為止。 ,由刖述s刀刀叹6十，及其應用於管件切割作業之說明 後，當可瞭解，本發明所設計之管切刀先以其刀刀前端之 穿：段較小徑尖部可以應力集中方式直接自管件-側刺入 其官壁，接續以相對應斜刃邊配合後端切割段兩側弧曲刀 邊所組成之多段刀邊w , 遭^循序漸進方式割斷該管件整個管壁 ’而能有效降低切割阻力，如此，不僅可提高該管切刀切 割管件之順隸，並能減少管件切心之毛邊生成；另外 本發明為較大管#之管件切制途，其管切刀進一步設 計有延伸刃部’以及延伸刃部銜接切割段處設有斷削凹部 ’使其於切割營林φ & , I& . a s仵中途，可進一步切斷管件上之殘屑，如 此’更能減少殘屑繼續延伸，而減少毛邊，故本發明能提 供一項有助於管件㈣作業順利進行之管切刀設計。 【圖式簡單說明】 第Η係本發明管切刀之第―較佳實施例之平面示意 圖0 "圖係第一圖所不官切刀較佳實施例之局部放大示 0 第圖係本發明官切刀之第二較佳實施例之平面示意 第四圖你第三圖所示管切刀較佳實施例之局部放大示 0 第五圖係本發明管切刀之第三較佳實施例之平面示意 1353919 圖。 第六圖係第一圖所示管切刀較佳實施例於切割 使用狀態圖。 α 第七圖係第三圖所示管切刀較佳實施例於切巧 使用狀態圖（一）。 ° 第八圖係第三圖所示管切刀較佳實施例於切叫 使用狀態圖（二）。 第九圖係第八圖之局部放大示意圖。As can be seen from these figures, the [S] 4 1353919 tube cutter of the present invention is a sheet-like body made of a rigid material, and the tube cutter includes a blade (10) and a connection. The end portion (20) is located at a front end of the tube cutter, and the connecting end portion (20) is attached to a rear end of the tube cutter to provide a connection portion of the driving device. As shown in the first to fourth figures, the knife (1〇) comprises a puncture segment (11) and a cutting segment (12) connected to the rear end of the puncture segment (11), the puncture segment forming a tip at the crotch end The tip portion (111)' forms a substantially symmetrical oblique edge (114) on both sides of the rear end such that the width of the rear end of the puncture segment (11) is greater than the width of the front end. In the preferred embodiment, the tip portion ( 111) has a tip end (112) and a flat portion (113) that is coupled to the larger diameter end of the tip end (112), and the cutting portion (彳2) is engaged by the flat portion (113). The aforementioned tip (11 2) has an included angle of 50. ~70. Preferably, the angle between the two oblique edge edges (114) is between 5 turns. ~7〇. Preferably, the cutting section (12) forms a symmetrical curved edge (121) on both sides of the cutting section. The arc curved edge (121) may be convexly curved (such as the second and fourth figures). The display), or may be a concave arc shape (as shown in the fifth figure), etc. 'The cutting segment (12) rear end width is greater than the front end width, and the two arc curved edge (121) respectively The rear end of the two oblique knife edges (114). As shown in the third and fourth figures, the knife (1〇) of the tube cutter can further include an extension (13) following the cutting segment (12), and the extension (13) is formed on both sides. a cutting edge portion (131), and a front end of the two extending blade portions (131) is joined to the two arc curved edge edges (121) of the cutting segment (12) to form a cutting recess (132), respectively, the extending edge portion 〇μ ) may include a flat edge and a curved edge (134) after the flat edge (133) and the extended blade portion (131) forms a rear end width greater than the front end width of the segment of the rear curved edge (134) The rear 1353919 arc curved edge (134) may be a convex arc shape design. As shown in the first and second figures, the creative tube cutter can further form a body section (3〇) having a width larger than the cutting section (12) in the section after the cutting section (12). The body section (30) The front side of the rear end of the joining section (12) forms a straight edge (31) perpendicular to the center line of the tube cutter. As shown in the second and fourth figures, the section of the creative tube cutter that can be further after the extension blade portion (131) is a body segment (30) having a width larger than the extension blade portion (131), the body segment ( 3)) The front side of the rear end of the extension blade (131) is formed to form a straight side perpendicular to the center line of the tube cutter. The invention adopts the above-mentioned tube cutter design 'When it is applied to the pipe cutting operation, taking the preferred embodiment of the pipe cutter shown in the first figure as an example, which is suitable for the pipe cutting of small pipe diameter (50), such as As shown in Figure 6, when the tube cutter/drive device drives the cutting tube, the tip (11) of the front end puncture section (1彳) is first inserted into the tube (50)-side tube wall, and then connected. Both sides of the inclined edge edge 〇 14) progressively open the official wall, and then use the curved edge of the back side (彳2彳) to gradually cut open, and reach the pipe at the tip (11彳) (5〇 When the other side of the pipe wall is pierced, the pipe wall is first cut and then the pipe member (5 〇) is cut. As the second embodiment does not care about the preferred embodiment of the cutter, it is suitable for pipe cutting of a large pipe diameter when the pipe cutting operation is performed, and when the pipe slice is driven by the driving device to drive the cutting pipe member. As shown in the seventh, eighth and ninth figures, the tip end portion (11) of the front end puncture section (11) is inserted into the pipe wall of the pipe member (5〇) to be successively extended by the inclined edge edges (114) on both sides. After the pipe wall is cut, the arc edge (121) on both sides of the rear end is used to successively cut the pipe wall, and when the cutting notch (132) of the pipe cutter reaches the pipe wall, the broken pipe is utilized. The step of the notch (132) is cut and 1353919 is formed at the edge of the bevel edge (114) to form a residual shoulder formed by the cutting blade (50), and then reaches the other side of the pipe at the tip (1) Then, the first thorn is used: the pipe wall is opened until the pipe (5 〇) is cut. After the description of the s knife sighs 60, and its application to the pipe cutting operation, it can be understood that the pipe cutter designed by the invention is first worn by the front end of the knife: the smaller diameter tip can be The stress concentration method directly penetrates the pipe from the pipe-side into the official wall, and then connects the multi-section edge w composed of the edge of the curved cutting edge on both sides of the rear cutting section with the corresponding inclined edge, and cuts the entire pipe wall in a step-by-step manner. 'It can effectively reduce the cutting resistance, so that not only can the pipe cutter cut pipe fittings be improved, but also the burr formation of the pipe cutting core can be reduced; in addition, the invention is the pipe cutting process of the larger pipe #, and the pipe cutting The knife is further designed with a cutting edge portion and a cutting recess at the connecting cutting section of the extending blade portion to cut the debris on the pipe in the middle of the cutting camp φ &, I&. 'The invention can reduce the residual debris and continue to extend, and reduce the burrs. Therefore, the present invention can provide a pipe cutter design which contributes to the smooth operation of the pipe fittings (4). BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a preferred embodiment of a tube cutter of the present invention. FIG. 1 is a partial enlarged view of a preferred embodiment of the first embodiment of the tube cutter. A plan view of a second preferred embodiment of the invention cutter is shown in FIG. 4 is a partially enlarged view of a preferred embodiment of the tube cutter shown in the third diagram. FIG. 5 is a third preferred embodiment of the tube cutter of the present invention. The plane of the example is shown in Figure 1353919. Fig. 6 is a view showing a preferred embodiment of the tube cutter shown in the first figure in a cutting state. α The seventh embodiment is a preferred embodiment of the tube cutter shown in the third figure in the use state diagram (1). ° Figure 8 is a diagram showing the preferred embodiment of the tube cutter shown in the third figure in the state of use (2). The ninth drawing is a partially enlarged schematic view of the eighth figure.
管件之 管件之 管件之 【主要元件符號說明】 (10)刀刃 (11)穿刺段 (1 1 1)尖部 (112)尖端 (1 13)平直部 (114)斜刃邊 (12)切割段 (1 21)弧曲刃邊 (13)延伸段 (131)延伸刃部 (132)斷削凹口 (133)平刃邊 (134)後弧曲刃邊 (20)連接端部 (30)本體段 (31)直邊 (50)管件[Main component symbol description of pipe fittings for pipe fittings] (10) Cutting edge (11) Piercing section (1 1 1) Tip (112) Tip (1 13) Straight part (114) Oblique edge (12) Cutting section (1 21) curved curved edge (13) extended section (131) extended blade portion (132) broken notch (133) flat blade edge (134) rear curved edge edge (20) connecting end portion (30) body Segment (31) straight edge (50) pipe fittings