201036727 六、發明說明： 【發明所屬之技術領域】 本純為—種中空管，尤指—種用於製造自行車之車 ^巾空管體，其係將鈦基合金板㈣冷軋㈣方式使其 #形形成螺旋狀的中空管體，將敎縫銲接後獲得較佳強 度及不易變形之中空管。 【先前技術】. >按’隨著時代的演變，自行車的使甩除了為基本的代 〇步交通工具之外，更成為兼具休閒、運動等複合功能的器 具，政府亦於各地區積極開發自行車專用車道或自行車競 .技場地，提供愈來愈多的用車人口使用。由於自行車車商 研發能力的提升’各式功能的自行車種陸續被設計成型 ’嗣對於自行車車身的強度、重量等需求，亦因日益優良 ㈣料被開聲產生，而有極高品質的要求；查（請參閲第 -、二圖所示），傳統自行車車身管件製作，—般以鐵、 P鋁合金等金屬#質銲接製成巾空管體10(即：有縫管）， 其主要係將金屬板材11經輥壓機之捲輥擠壓過程，使平面 的金屬板材11形成圓管狀，再於輥壓成圓形的金屬板材U 相鄰之兩端施以銲接作業，使其形成完整之中空管體10 者Y再查，以上述方式製成之中空管體10,其銲接之銲道 12係呈一直線，復以整體中空管體10而言，該銲道12之處 乃為應1較弱之處，故該中空管體10極易由該銲接處發2 變形破壞的情形。嗣為了獲得較高品質的管件而運用於自 打車車身，遂有設計者嘗試採用鈦金屬或鈦合金作為製成 201036727 中空管體之材料，以鈦金屬或及其合金作為管製品者，具. 有防鏽、質輕、兩強度等優良的機械性能；但是，由於鈦 金屬及存有特殊的工藝條件’加工上相對顯得複雜，且鈦 金屬為具有記憶性之金屬，故具有高彈性回復量，在傳統 冷處理加工技術上，必需掌握特別技術以克服困難。鑑此 ，本案創作人基於長期專研此領域之心得，並在精益求精 之精神下設計研發，限定以鈦基合金為母材，以冷軋沖^ 及銲接的加工方法，獲得較佺的品質之管件，使其運用於 自行車的車身f件時，具有質輕、較佳抗拉強度及耐疲勞 性能等優點者。 【發明内容】 本案創作之目的，即在於改善傳統中空管體品質不佳 之問題’而設計-種以螺旋方式來銲接鈦基合金，使其妒 成：空狀之管體’令該管體運用於自行車車身骨架時，具 有較佳強度及不易變形之優點。為達該目的，本案主要、 將鈦基合金板材承置於進料機構上，令鈦基合金板材出料 後銜接至成型模上’先施以冷軋沖壓手段後，延著成型模 捲繞成螺旋狀管體，復施以銲接φ 、 汗丧作業，令其形成中空之管 體者。 【實施方式】 有關本案創做為達目的所運用之技術手段 合圖式所示之實施例，詳細說明如下： 茲謹再配 清參閱第三圖所示 承置於進料機構3〇上， ’本案主要係將鈦基合金板材20 々鈦基合金板材20經進料機構3〇 201036727 送出，出料後銜接至成型模40上，該鈦基合金板材2〇具有 適當寬度，且厚度耷3腿以下，而成型模4〇為圓柱狀模棒， 前端為成型端41，後端則、為出料端42，成型端41之圓徑係 略小於出料端42，且成型端41之表面凸設有壓掣邊43，該 壓掣邊43的上方位置，設有一沖塊5〇，該沖塊5〇可因沖壓 機的傳動而行連續的升降運動，沖塊5〇底端具有内凹槽“ ，並使該内凹槽51與壓掣邊43呈對應狀。請同時參閱第四 〇 ❹ 、五圖所示’’嗣當鈦基合金板材20經進料機構30而送至居 型模40時，鈦基合金板材2〇與成型模4〇之間具有一角度 該角度以40度至50度為較佳；鈦基合金板材2〇送經成型相 4〇的成型端41之壓掣邊43時，即受沖塊5〇之沖壓而彎曲變 形，該鈦基合金板材20的變形度取決於壓掣邊43與沖塊5丨 ，端内凹槽51的形狀配合，尤其需考慮鈦金屬的彈性回損 量（即記憶特性），使其沖壓後獲得預定的圓度，並恰賃 穿在略大於成型端41之出料端42外表面，在持續送料與重 覆沖壓的操作下，該鈦基合金板材2〇即以螺旋方式成型一 管狀體，並且貫穿在成型模4〇的出料端42，當製成預定長 度的螺旋管狀體之後，即可由成型模40的出料端42取出（ 如第六圖所不），而經冷軋沖壓後的鈦基合金板材2〇，其 螺旋的紋路間隙可以較為密合，復於呈螺旋狀中空管材相 鄰的螺旋紋路兩邊端，以銲接機構6〇予以銲接固定而形成 中工之管體70者（如第七、八圖所示）。請參閱第九、 十圖所示，為了獲得機械更加優良的鈦基合金中空管體， 可再將銲接完成的管體7〇再經壓模機構8〇施似整直整徑 5 201036727 作業’其係利用壓模機構8〇模穴略小於管體7〇外徑，使經 整直整徑後，鈦基合金分子改變，使其結晶轉變成更細小 組織’進而提高鈦基合金的抗拉強度和耐疲勞性能，同時 ，亦因鈦基合金表面分子的改變，使管體7〇表面的銲道消 失節省了官體7 〇表面拋磨的程序。經整直整徑作業後的 管體70，可再將管體7〇在惰性氣體的保護下施以約6〇〇度 加溫之去應力退火程序，使該管體7〇經去應力退火程序後 ，維持高強度，但延伸率提升的優良品質。 藉由上述管體70之成型，由於該管體70係將鈦基合金 板材20以冷軋沖壓變形使其形成螺旋之管狀體，復於該管 狀體的螺旋紋路相鄰的兩邊端，以銲接機構6〇予以銲接固 定而成管體。嗣該管體70的銲道亦以螺旋方式平均環繞設 分佈在管體70周緣，使管體70整體應力平均，故可有效增 加其強度並降低變形量，同時又因鈦基合金具有極佳之^ 拉強度、輕量化及耐侵蝕性等優點，嗣當該管體7〇運用^ 自行車車身管件時，將可達到提昇自行車品質及性能的優 良功效。為了更進一步測試本案管件結構之優良特性，申 請人特將本案管件進行降伏強度、抗拉強度及伸長率之測 試（委由台灣科技股份有限公司進行試驗，測試報告如附 件），其中，該降伏強度（〇. 2% 〇f【此七）為1〇42 N/mm2、 抗拉強度為1113 N/mnf、伸長率（G L. 5〇刪）為。相較 於傳統管材的力學性能，本案管體5〇確有性能的增進。 從以上之所述及附圖所示之實施例中可知，本案創作 相較於一般習知之管體構造，確具有顯著之進步性，且其 201036727 運用之技術手段確為本案創作人研發而成，嗣本案誠已符 合專利要件，爰依法提出申請，並祈賜專利為禱。另外， .本案以上所揭示之構造，乃為本創作較佳之實施例，舉凡 依本案創作之構造所作之等效變化，仍應含蓋於本創作 申請專利範圍。 【圖式簡單說明】 〇第一圖係習知中空管體成型示意圖。 第二圖係習知中空管體立體圖。 -第三圖係本案管體成型示意圖（一）。 .第四圖係本案冷軋沖壓鈦基合金板材示意目（一）。 第五圖係本案冷軋沖壓鈦基合金板材示意圖（二）。 第六圖係本案管體成型示意圖（二）。 第七圖係本案管體焊接示意圖。 第八圖係本案管體立體圖。 〇第九圖係本案管體縮管成型示意圖。 第十圖係本案管體縮管後立體目。 才件本案皆體進行降幅及抗拉試驗之測試報告。 【主要元件符號說明】 〔習知構造〕 10 中空管體 11金屬板材 12 銲道 201036727 〔本案構造〕 20 鈦基合金板材 30 進料機構 40 成型模 41 成型端 42 出料端 43 壓掣邊 50 沖塊 51 内凹槽 60 銲接機構 70 管體 80 壓模機構201036727 VI. Description of the invention: [Technical field to which the invention belongs] This is purely a kind of hollow tube, especially a kind of hollow tube body used for manufacturing bicycles, which is a method of cold rolling (four) of titanium-based alloy sheets (four) The ## shape is formed into a spiral hollow tube body, and the hollow tube having better strength and less deformation is obtained after the quilting is welded. [Previous technology]. > According to the evolution of the times, in addition to the basic means of transportation, bicycles have become a combination of leisure and sports. The government is also active in various regions. Development of bicycle lanes or bicycle racing and technical venues, providing more and more car users. Due to the improvement of the research and development capabilities of bicycle dealers, the bicycles of various functions have been designed and formed. The demand for the strength and weight of the bicycle body is also due to the increasingly good (4) material being produced, and the requirements of extremely high quality; Check (please refer to the first and second figures), the traditional bicycle body pipe fittings, generally made of iron, P-aluminum alloy and other metal #质焊接 towel empty pipe body 10 (ie: with seam pipe), the main The metal sheet 11 is pressed by a roll of a roll press to form a flat metal sheet 11 into a circular tube shape, and then a welding operation is performed on the adjacent ends of the rolled metal sheet U to form a metal sheet. The hollow tube body 10 of the complete hollow tube body 10 is further inspected, and the welded tube 12 of the hollow tube body 10 manufactured in the above manner is in a straight line, and the whole of the hollow tube body 10 is the same. The position is weaker, so the hollow pipe body 10 is easily broken by the deformation of the weld.嗣In order to obtain higher quality pipe fittings, it is used in self-driving bodies. Designers have tried to use titanium or titanium alloys as materials for making 201036727 hollow pipes, and titanium or alloys as pipe products. It has excellent mechanical properties such as rust prevention, light weight and strength. However, due to the special process conditions of titanium metal, it is relatively complicated in processing, and titanium metal is a memory metal, so it has high elastic recovery. In terms of traditional cold processing technology, it is necessary to master special techniques to overcome difficulties. In view of this, the creators of this case are based on long-term research in this field, and design and research in the spirit of excellence, limiting the use of titanium-based alloys as the base material, cold rolling and welding processing methods, to obtain better quality. The pipe fittings, when applied to the body part of the bicycle, have the advantages of light weight, good tensile strength and fatigue resistance. [Summary of the Invention] The purpose of the creation of the case is to improve the problem of poor quality of the traditional hollow pipe body' design and to weld the titanium-based alloy in a spiral manner to make it into a hollow pipe body. When applied to the bicycle body frame, it has the advantages of better strength and less deformation. In order to achieve this goal, the main purpose of this case is to place the titanium-based alloy sheet on the feeding mechanism, so that the titanium-based alloy sheet is connected to the forming mold after being discharged, and then the cold rolling is applied first, and then the forming mold is wound. The spiral tube body is reapplied to weld φ and sweat to make it a hollow tube. [Embodiment] The embodiment shown in the figure of the technical means used for the purpose of this case is described in detail as follows: Please refer to the loading mechanism 3〇 as shown in the third figure. 'This case is mainly to send titanium-based alloy sheet 20 々 titanium-based alloy sheet 20 through the feeding mechanism 3〇201036727, after the discharge is connected to the forming mold 40, the titanium-based alloy sheet 2 〇 has a suitable width, and the thickness 耷 3 Below the leg, the forming die 4 is a cylindrical die bar, the front end is a forming end 41, and the rear end is a discharging end 42, the rounded diameter of the forming end 41 is slightly smaller than the discharging end 42 and the surface of the forming end 41 The pressing edge 43 is convexly disposed, and the upper portion of the pressing edge 43 is provided with a punching block 5〇. The punching block 5〇 can be continuously lifted and moved by the driving of the punching machine, and the bottom end of the punching block 5 has an inner end. The groove "and the inner groove 51 and the pressing edge 43 correspond to each other. Please refer to the fourth and fifth figures at the same time as ''When the titanium-based alloy sheet 20 is sent to the home through the feeding mechanism 30 In the case of the mold 40, the titanium-based alloy sheet 2 has an angle with the molding die 4〇 at an angle of 40 degrees. 50 degrees is preferred; when the titanium-based alloy sheet 2 is fed through the pressing edge 43 of the forming end 41 of the forming phase, that is, it is bent and deformed by the punching of the punching block 5, and the deformation degree of the titanium-based alloy sheet 20 Depending on the shape of the inner side groove 51 of the pressing edge 43 and the punching block 5, in particular, the elastic return loss amount (ie, memory characteristic) of the titanium metal needs to be considered, so that a predetermined roundness is obtained after punching, and The outer surface of the discharge end 42 is slightly larger than the forming end 41. Under the continuous feeding and repeated stamping operations, the titanium-based alloy sheet 2 is spirally formed into a tubular body and penetrates through the forming mold 4 The discharge end 42 is taken out from the discharge end 42 of the molding die 40 after being formed into a spiral length of a predetermined length (as shown in FIG. 6), and the cold-rolled stamped titanium-based alloy sheet 2〇, The spiral groove gap can be relatively close, and is formed on both sides of the spiral groove adjacent to the spiral hollow pipe, and is welded and fixed by the welding mechanism 6〇 to form the pipe body 70 of the middle (as shown in the seventh and eighth figures) Show). Please refer to the ninth and tenth figures, in order to obtain more mechanical Excellent titanium-based alloy hollow pipe body, the welded pipe body 7〇 can be further pressed through the die-pressing mechanism 8 整like straight straight diameter 5 201036727 Operation 'The system uses the compression molding mechanism 8 〇 mold hole is slightly smaller than the pipe The outer diameter of the body 7〇, so that after the straightening of the full diameter, the titanium-based alloy molecules change, causing the crystal to transform into a finer structure, thereby improving the tensile strength and fatigue resistance of the titanium-based alloy, and also because of the titanium-based alloy. The change of the surface molecules causes the disappearance of the weld bead on the surface of the pipe body 7 to save the surface polishing process of the body 7 . After the pipe body 70 after the straightening operation, the pipe body 7 can be further immersed in the inert gas. Under the protection, a stress relief annealing procedure of about 6 degrees of heating is applied to maintain the high strength, but the elongation is improved, after the tube 7 is subjected to the stress relief annealing process. By forming the tube body 70, the tube body 70 is formed by cold-rolling stamping the titanium-based alloy sheet material 20 to form a spiral tubular body, which is welded to the adjacent ends of the spiral groove of the tubular body to be welded. The mechanism 6 is welded and fixed into a tube body. The weld bead of the pipe body 70 is also distributed around the circumference of the pipe body 70 in a spiral manner, so that the overall stress of the pipe body 70 is averaged, so that the strength and the deformation amount can be effectively increased, and the titanium-based alloy is excellent. The advantages of tensile strength, light weight and corrosion resistance, etc., when the pipe body 7 uses the bicycle body pipe fittings, it can achieve the excellent effect of improving the quality and performance of the bicycle. In order to further test the excellent characteristics of the pipe fitting structure of this case, the applicant specially tested the strength, tensile strength and elongation of the pipe fittings in this case (subjected by Taiwan Science and Technology Co., Ltd., test report as attached), wherein the lodging The strength (〇. 2% 〇f [this seven) is 1〇42 N/mm2, the tensile strength is 1113 N/mnf, and the elongation (G L. 5〇) is Compared with the mechanical properties of the traditional pipe, the pipe body of the case has an improvement in performance. As can be seen from the above description and the embodiments shown in the drawings, the creation of the present case is significantly improved compared to the conventional pipe structure, and the technical means used by the 201036727 is developed by the creator of the case. In this case, the case has been in conformity with the patent requirements, and the application has been filed according to law, and the patent is prayed for prayer. In addition, the above-disclosed constructions of the present invention are preferred embodiments of the present invention, and the equivalent changes made by the construction of the present invention should still be covered by the scope of the patent application. [Simple description of the drawing] The first figure is a schematic diagram of the hollow tube body forming. The second figure is a perspective view of a conventional hollow tube body. - The third picture is a schematic diagram of the tube body forming in this case (1). The fourth picture shows the cold-rolled stamping titanium-based alloy sheet in this case (I). The fifth picture is a schematic diagram of the cold rolled stamping titanium-based alloy sheet in this case (2). The sixth picture is the schematic diagram of the tube body forming in this case (2). The seventh picture is a schematic diagram of the welding of the pipe body in this case. The eighth picture is a perspective view of the tube body of this case. The ninth figure is a schematic diagram of the shrinkage of the pipe body in this case. The tenth figure is the three-dimensional head after shrinking the tube in this case. In this case, the test report of the reduction and tensile test was carried out. [Major component symbol description] [Conventional structure] 10 Hollow tube body 11 metal plate 12 Weld bead 201036727 [Structure of the present invention] 20 Titanium-based alloy sheet 30 Feed mechanism 40 Molding mold 41 Forming end 42 Discharge end 43 Pressing edge 50 Punch 51 Inner groove 60 Welding mechanism 70 Tube 80 Compression mechanism