A7A7
4 G 4 5 6 Q — B7 五、發明説明（I ) 本發明係有關於立管成型製造方法，特別係指可一體 成型達到省料之自行車立管成型製造方法。 (对先閱讀背面之注意事項再碛{本頁) 按自行車立管1構造大體上如第一圖所示，係在橫管 2兩端分別具有一車手束仔3及前叉束仔4»其中，目前 市面上車手束仔3及前叉束仔4係以焊接方式焊固於橫管 2兩端。吾人均知，此種焊接方式會造成製造上費時，而 且焊接處強度較弱。是故，爲改善該種立管缺失，市面上 也有採一體成型之鍛造方法，來克服強度弱的缺失。然該 種方法係將實心原料塊體經過空心沖鍛處理，必定會產生 相當多的廢料，大大地增加成本。 有鑒於此，本發明人經多年來苦心鑽硏，終於硏製出 一種可改善前述立管缺失之自行車立管成型製造方法。 即，本發明百的在提供一種自行車立管成型製造方 法，既可節省原料，並可增加強度及節省工時。 緣是，本發明達成上述目的之特徵係包括一種自行車 立管成型製造方法，該立管包括一橫管，並在橫會兩端分 別具有一前叉束仔及車手束仔，該方法包括如下歩驟： if7ir—部中""'^-^m 3 消泠合竹打印" 將一原料塊體置入一第一模體，該第一模體具有一端 呈開口之中空部份，該中空部份之底端具有至少一凹陷， 其中該中空部份可切分爲兩個互爲呈一夾角之第一段部及 第二段部，再提供第一沖壓棒從該開口沖鍛該原料塊體， 使原料塊體充滿於中空部份而形成一具有前叉束仔及橫管 之雛形體；以及 再將該雛形體置入於一第二模體，該第二模體除了具 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 4- 4 6 456 0 A7 _____________B7 五'發明説明（2) 有第一模體之構造，而進一步包括在朝著開口處鑿設有兩 個呈枏對狀之導角口，再提供一底端兩側具有擋塊及兩擋 塊之間具有一半圓凸體之第二沖壓棒從該開口置入而沖 锻，其中該第二沖壓棒從半圖凸體處延伸有一第二桿體， 該第二桿體的管徑比雛形體之橫管的管徑小，藉此在橫管 內部形成一空心部份，亦即沖鍛該空心部份所擠壓出來的 原料充塞於導角口，而配合成型擋塊及半圓凸體而形成一 車手束仔，如此即可完成一體成型之立管構造。 茲舉一實施例並配合如下圖式，相信本創作之目的特 徵及功效可由之，更爲淸析明確的瞭解。 第一圖爲習知自行車立管示意圖； 第二圖爲原料塊體示意圖； 第三圖爲本發明第一成型步驟示意圖； 第四圖爲本發明第二成型步驟示意圖： 第五圖爲本發明另一實施例成型步驟示意圖； 第六圖爲依據本發明方法所製成之立管立體圖 首先，請參閱第二圖，係選定一原料塊體10作爲製 造立管1的主要材料，該原料塊體係呈圓棒狀。其次， 再參閱第三圖及第四圖，其中第三圖揭示一第一模體20 係來成型製造立管1之前叉束仔4，該模體20具有一端 開口 201之中空部份202，該中空部份202之底端具有兩 個凹陷203,204係用來成型前叉束仔4之鏆固部份5。其 中，該中空部份202可切分爲兩個段部，即第一段部2〇5 及第二段部206。其中第一段部20 5係用來成型前叉束仔 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） "先閱讀背面之注意事項再硪巧本頁) ---訂 5 46456 0 Λ7 Α7 Β7 五、發明説明（3 ) 4，而第二段部206則是用以成型橫管2，最値得一提地， 該第一段部205與第二段部206彼此呈一適當夾角，使得 成型之橫管2呈向上傾斜。涵此可將第二圖所示之原料塊 體10從膊口 201置入於中空部份202內，再以一第一沖 壓棒50從開口 201沖_舞該原料塊體10，使原料塊體10 充滿於中空部份202而形成一具有前叉束仔4及橫管2之 雛形體207。 再參閱第四圖，係揭示一第二模體30之構造，該第 二模體30包含第一模體20構造，而進一歩在朝著開口處 鑿設有兩個呈相對狀之導角口 301,302 ^將該雛形體30 放置於該第二模體30，然後藉由一底端兩側具有擋塊 401,402及兩擋塊401,402之間具有半圓凸體403之第二 沖壓棒501從開口 303置入而沖鍛》其中該沖壓棒501前 端之第二桿體502比雛形體207之橫管2管徑小。因此在 橫管2內部形成一空心部份208，也就是沖鍛該空心部份 2〇8所擠壓出來的原料充塞於導角口 301,302,而配合成 型擋塊401,4〇2及半圓凸體403而形成一車手束仔3»如 此即可完成一體成型之立管構造，也由此可知，本發明僅 以兩個製造步驟即將整塊原料塊體10不多不少地製成一 立管主體構件，也不須要再增加其他原料，更不會衍生其 他廢料。大大地節省原料》 再參閱第五圖，係顯示本發明製成較長橫管2之另一 實施例製造步驟，只要藉另一比前述第二桿體502具有較 長桿體503之第三沖壓棒5〇4往第二模體30之底部進一 本紙张尺度適汛中國國家橾隼（CNS ) A4规格（2S0X297公釐> I 4 -"衣 1— II *1· (1 H.—Ϊ 1 『 {請先閲請背面之注意事項再頊对本茛) 464560 A7 __________B7_ 五、發明説明（4·) 步伸入沖壓，導致該空心部份208變得較長，使得因空心 部份變長所衍生的原料可增加橫管2之長度（可配合參閱 第六圖）。可見本發明所提供一種自行車立管成型製造方 法’既可節省原料，並可增加強度及節省工時。 圖號說明： — 原料塊體----10 立管…·ι 第—櫈體.....20 前叉束仔——4 開口…-201中空部份——202 凹陷-一203,204 鎖固部份---5第一段部-一205 第二段部…2〇6 雛形體…207第二模體…-30 .導角口…301,302擋塊--401,402半圓凸體，--403 第~~沖壓棒—501第二桿體- -- 502 空心部份----208 第三沖壓棒---504 (誚先閲讀背面之注意事項再填巧本页) 朽沪部中呔^4,^,.以工消贽合作7t卬製 本紙張尺度適州中國國家摞準（CNS ) A4規格（210X297公釐）4 G 4 5 6 Q — B7 V. Description of the invention (I) The present invention relates to a method for forming and manufacturing a riser, and particularly to a method for forming and manufacturing a bicycle riser that can be integrally formed to save material. (Please read the precautions on the back before you read this page.) The structure of the bicycle riser 1 is roughly as shown in the first figure, with a driver's harness 3 and a front fork harness 4 at each end of the cross tube 2 » Among them, currently the driver beam 3 and the front fork beam 4 on the market are welded to the two ends of the cross tube 2 by welding. As we all know, this welding method will cause time-consuming manufacturing, and the strength of the weld will be weak. Therefore, in order to improve the lack of this kind of riser, there is also a forging method on the market to overcome the lack of weak strength. However, this method involves hollow punching the solid raw material block, which will definitely generate a considerable amount of waste, which will greatly increase the cost. In view of this, the inventors have worked hard for many years to finally produce a bicycle riser molding manufacturing method that can improve the lack of the riser. That is, the present invention provides a method for forming and manufacturing a bicycle riser, which can save raw materials, increase strength and save man-hours. The reason is that the present invention achieves the above-mentioned objective by including a method for forming and manufacturing a bicycle riser. The riser includes a cross tube and has a front fork beam and a driver beam at each end of the cross club. The method includes the following: Step: if7ir—The middle part of the "quotation" '^-^ m 3 Xiaozhuhezhu print "Put a raw material block into a first mold body, the first mold body has a hollow portion with an opening at one end The bottom end of the hollow portion has at least one recess, wherein the hollow portion can be cut into two first and second sections at an angle, and a first punching rod is provided to punch through the opening. Forging the raw material block so that the raw material block is filled in the hollow portion to form a prototype body having a front fork bundle and a transverse tube; and then placing the prototype body in a second mold body, the second mold body In addition to the paper size applicable to China National Standards (CNS) A4 specifications (210X 297 mm) 4- 4 6 456 0 A7 _____________B7 Five 'invention description (2) The structure of the first phantom, and further including the opening towards the opening There are two corner openings facing each other, and a bottom end is provided. A second stamping rod having a stopper on the side and a semi-circular convex body between the two stoppers is inserted from the opening for punching, wherein the second punching rod extends from the convex body of the half figure, and the first The diameter of the two rods is smaller than the diameter of the horizontal tube of the prototype, thereby forming a hollow portion inside the horizontal tube, that is, the raw material extruded from the hollow portion of the forging is stuffed into the corner opening, and A rider's beam is formed with the forming stop and the semi-circular convex body, so that the integrally formed riser structure can be completed. I will give an example and cooperate with the following diagrams. I believe that the purpose features and effects of this creation can be used for a clearer understanding. The first picture is a schematic diagram of a conventional bicycle riser; the second picture is a schematic diagram of a raw material block; the third picture is a schematic diagram of a first forming step of the present invention; the fourth picture is a schematic diagram of a second forming step of the present invention: The fifth picture is the present invention Schematic diagram of the forming steps of another embodiment; Figure 6 is a perspective view of a standpipe made according to the method of the present invention. First, please refer to the second figure. A raw material block 10 is selected as the main material for manufacturing the standpipe 1. The system is round in shape. Next, referring to the third and fourth figures again, the third figure discloses a first mold body 20 for forming and manufacturing the front fork bundle 4 of the riser 1. The mold body 20 has a hollow portion 202 with an opening 201 at one end. The hollow portion 202 has two recesses 203 and 204 at the bottom end for forming the anchoring portion 5 of the front fork bundle 4. Among them, the hollow portion 202 can be divided into two segment portions, namely a first segment portion 205 and a second segment portion 206. The first section 20 5 is used to form the front fork bundle. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) " Read the precautions on the back first, and then click this page for details.) --- Order 5 46456 0 Λ7 Α7 B7 V. Description of the invention (3) 4 and the second section 206 is used to form the horizontal tube 2. Most notably, the first section 205 and the second section 206 are each other At an appropriate angle, the formed horizontal tube 2 is inclined upward. In this way, the raw material block 10 shown in the second figure can be inserted into the hollow portion 202 from the mouth 201, and then a first punching rod 50 is punched from the opening 201 to dance the raw material block 10 to make the raw material block 10 The body 10 is filled in the hollow portion 202 to form a prototype body 207 having a front fork bundle 4 and a transverse tube 2. Referring again to the fourth figure, the structure of a second mold body 30 is disclosed. The second mold body 30 includes the structure of the first mold body 20, and two opposite corners are chiseled toward the opening. 301,302 ^ Place the prototype body 30 on the second mold body 30, and then pass through the opening 303 through a second stamping rod 501 with a stopper 401,402 on both sides of the bottom end and a semicircular convex body 403 between the two stoppers 401,402. Inserting and Punching "wherein the second rod body 502 at the front end of the stamping rod 501 is smaller than the diameter of the transverse tube 2 of the prototype body 207. Therefore, a hollow portion 208 is formed inside the transverse tube 2, that is, the raw material extruded from the hollow portion 208 is stuffed into the corner openings 301 and 302, and cooperates with the forming stoppers 401 and 402 and the semicircular protrusion. The body 403 forms a driver ’s beam 3 »so that the integrally formed riser structure can be completed, and it can be seen from this that the present invention uses only two manufacturing steps to make the entire raw material block 10 into a single stand. It is not necessary to add other raw materials to the main body of the pipe, nor will it generate other waste materials. Greatly save raw materials "Referring again to the fifth figure, it shows the manufacturing steps of another embodiment of the present invention to make a longer horizontal tube 2, as long as another third has a longer rod 503 than the second rod 502 The stamping rod 504 is fed into the bottom of the second mold body 30 with a paper size suitable for the Chinese National Standard (CNS) A4 (2S0X297 mm)> I 4-" clothing 1— II * 1 · (1 H. —Ϊ 1 『{Please read the precautions on the back first, and then 顼 regard this buttercup) 464560 A7 __________B7_ 5. Description of the invention (4 ·) The step is drawn into the stamping, which causes the hollow portion 208 to become longer, which causes the hollow portion The raw material derived from the variable length can increase the length of the horizontal pipe 2 (see Figure 6 for cooperation). It can be seen that the method for manufacturing a bicycle riser provided by the present invention can not only save raw materials, but also increase strength and save man-hours. Explanations: — Raw block ---- 10 standpipe… · ι—Stool body ..... 20 Front fork bundle—4 opening… -201 Hollow part—202 Depression—one 203,204 Locking part Copies --- 5 first section-one 205 second section ... 2 06 embryonic body ... 207 second phantom ... -30. Guide angle mouth ... 301, 30 2 stoppers-401, 402 semi-circular convex body,-403 first ~ ~ stamping rods-501 second rod body--502 hollow part-208 third stamping rod --- 504 (诮 read the first Note: Please fill in this page again.) ^ 4, ^ ,. In the Ministry of Shanghai, ^ 4, ^ ,. Cooperate with 7t to produce this paper. The paper size is suitable for China National Standards (CNS) A4 (210X297 mm).