125〇236 九、發明說明： ， 【發明所屬之技術領域】 本發明是有關於一種縫紉機用水平外梭，特別是指一 種縫紉機之外梭及其製造方法。 【先前技術】 參閱圖1、2，習知縫紉機之外梭1〇〇是用於套設在一 缝劫機的内梭外部，該外梭1〇〇是金屬材質所製成，主要 _ 包括有外徑依次遞減的一梭體10、一嗡合元件3〇(齒盤） 及一轉軸20三個主要結構，其中。 該梭體10是用以容置該内梭，包括有一圍繞一軸線Z 的周壁11、一形成於該周壁u 一端的開口 12，及一形成於 ’ 該周壁11另一端的底壁13,該周壁11的一側具有一針道 槽110，及一自該周壁11朝該針道槽110延伸並用以鈎線 的勾尖1 Π，而該底壁13上有開設有一供縫紉針穿設過的 針落槽130。 _ 該嗡合元件30與該轉軸20是呈階級狀地轴接於該梭 體10底部，並且是一體成型於該梭體10的底壁13處，藉 由該轉軸20與嚅合元件30的結構，可以受該縫紉機的傳 動機構驅動，而帶動該外梭100作高速迴轉。 然而’由於習知外梭100的該梭體1 〇、嚷合元件3〇及 轉軸20是呈階級落差狀且為金屬材質一體製成，加上該舊 合元件30是鄰接該梭體10，所以在製造上較為困難，需要 經過多道的車削、銑製、研磨、拋光…等作業流程，其製程 相當的複雜、費時，生產效率極低，而且，由於整個外於 5 1250236 100是採用金屬材質，豆奢旦y壬 1 从 貝其重里較重，對於須作高速迴轉的外 _ 杬而言，也增加了傳動動力上的損耗。 基此，為了改良上述的缺失，乃有業者利用塑膠射出成 ' 型的方式’將整個外梭100-體射出成型，雖然製成的外梭 能大幅減輕重量，並簡化了習知的製程，但是，以塑膠材料 製成的外梭100在後續加工製造上也有相當嚴重的缺點，其 要原因在於該梭體！ 0勾尖⑴必須相當尖銳、平滑， : 所以、、二射出成型後的外梭初胚，往往仍須再經過一切削出該 Φ 勾尖111的加工步驟，而由於塑膠材料強度與動性上均較金 屬來的低，所以在切削加工的過程中，稍有不慎，便很容易 造成該勾尖111的斷裂、破損，造成不良率的提高，而且， - 即使該勾尖U1未斷裂，仍有可能產生肉眼難以辨識的應力 集中現象，如此一來，則降低了外梭的使用壽命，因此，完 全改以塑膠材質射出成型的外梭，在加工製造上仍有其盲點 難以克服，故非一良好的製造方法。 【發明内容】 春 因此’本發明之目的，即在提供一種兼具高強度與輕 . 量化的缝紉機之外梭。 又，本發明的另一目的，是在提供一種能方便加工製 造，且降低加工不良率的縫紉機之外梭製造方法。 於是，本發明縫紉機之外梭，包含有··一梭體，是以金 屬材質製成，具有一圍繞一軸線的周壁、一形成於該周壁一 端的開口、一形成於該周壁另一端的底壁，及一沿該軸線方 向穿設於該底壁的穿孔，該周壁的一側具有一針道槽，及一 1250236 自：周壁朝該針道槽延伸的勾尖；—轉轴，具有一第一端部 a相反於該第—端部的第二端部、—連接於該第…二端 :的中間部’以及至少一延伸至該中間部上的射料孔，該第 =部是結合於該底壁的穿孔t，該第二端部尉間部是沿 :该軸線方向遠離於該穿孔；及―嚷合元件，是以塑膠材料 二成，包括一圍繞該轉軸的盤體、多數延伸出該盤體周面的 以及—個—體延伸至該轉軸射料孔上的定位部。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一較佳實施例的詳細說明中，將可清 楚的呈現。 結發明被詳細描述之前，要注意的是，在以下的說 明内各中，類似的元件是以相同的編號來表示。 >閱圖3 4’本發明縫訪機之外梭的—較佳實施例適 用於套設在一縫匆機（圖未示）的内梭外部，該縫幼機之 外梭包含一梭體40、-轉軸50,及，元件6〇。 該梭體4G是以金屬材質製成，且圍繞-轴線Z以容置 該上内才夂’该梭體40包括一圍繞該軸線z的周壁4卜一形成 於该周壁41 一端的開Π 42、一形成於該周壁41另一端的 底壁43，及一沿該軸線Ζ方向穿設於該底壁43的穿孔44 ’該周壁41的一側具有—針道槽411，及一自該周壁41朝 该針道槽411延伸的勾尘41 ^ ^ ^ 2 ’而違底土 43鄰近該針道槽 411的一側具有一供_ 一 、縫、、刀針（圖未不）牙設過的落針槽 431，且實施例中’該梭體40的底壁43更包含有二個對應 432，使該梭體40BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal outer shuttle for a sewing machine, and more particularly to a shuttle outside the sewing machine and a method of manufacturing the same. [Prior Art] Referring to Figures 1 and 2, it is conventional to use the shuttle 1 套 to be placed outside the inner shuttle of a seam-hijacking machine, which is made of metal material, mainly _ The first outer diameter of the first bobbin 10, one of the twisting elements 3 (the toothed disc) and one rotating shaft 20 are three main structures, wherein. The shuttle body 10 is for accommodating the inner shuttle, and includes a peripheral wall 11 surrounding an axis Z, an opening 12 formed at one end of the peripheral wall u, and a bottom wall 13 formed at the other end of the peripheral wall 11. One side of the peripheral wall 11 has a needle groove 110, and a hook tip 1 自 extending from the peripheral wall 11 toward the needle groove 110 for hooking, and the bottom wall 13 is provided with a sewing needle for passing through The needle is slotted 130. The coupling element 30 and the rotating shaft 20 are axially connected to the bottom of the shuttle body 10 in a class shape, and are integrally formed at the bottom wall 13 of the shuttle body 10, and the structure of the rotating shaft 20 and the coupling element 30 is formed. It can be driven by the transmission mechanism of the sewing machine to drive the outer shuttle 100 to rotate at a high speed. However, since the shuttle body 1 〇, the splicing element 3 〇 and the rotating shaft 20 of the conventional outer shuttle 100 are made of a class gap and are made of a metal material, and the old coupling element 30 is adjacent to the shuttle body 10, Therefore, it is difficult to manufacture, and it requires a lot of operations such as turning, milling, grinding, polishing, etc., the process is quite complicated, time-consuming, and the production efficiency is extremely low. Moreover, since the whole exterior is 5 1250236 100, the metal is used. Material, bean luxury y 壬 1 is heavier from Bechi, and it also increases the loss of transmission power for the outer _ 杬 that needs to be rotated at high speed. Based on this, in order to improve the above-mentioned defects, the manufacturer uses the plastic injection to form a 'type' to project the entire outer shuttle 100-body, although the outer shuttle can greatly reduce the weight and simplify the conventional process. However, the outer shuttle 100 made of plastic material has quite serious drawbacks in subsequent processing and manufacturing, and the reason is the shuttle body! 0 Hook tip (1) must be quite sharp and smooth: Therefore, the second shot of the outer shuttle embryo after the injection, often still has to go through a machining step to cut the Φ tip 111, and because of the strength and dynamics of the plastic material It is lower than that of metal. Therefore, in the process of cutting, if it is slightly inadvertent, it is easy to cause breakage and breakage of the hook tip 111, resulting in an increase in the defect rate, and - even if the hook tip U1 is not broken, There is still the possibility of stress concentration phenomenon that is difficult to be recognized by the naked eye. As a result, the service life of the outer shuttle is reduced. Therefore, the outer shuttle that is molded by plastic material is completely changed, and the blind spot is still difficult to overcome in processing and manufacturing. Not a good manufacturing method. SUMMARY OF THE INVENTION Spring Therefore, the object of the present invention is to provide a shuttle that has both high strength and light weight. Further, another object of the present invention is to provide a shuttle manufacturing method other than a sewing machine which can facilitate processing and manufacture and which can reduce the processing failure rate. Therefore, the shuttle of the sewing machine of the present invention comprises a shuttle body made of a metal material, having a peripheral wall surrounding an axis, an opening formed at one end of the peripheral wall, and a bottom formed at the other end of the peripheral wall. a wall, and a perforation penetrating the bottom wall in the axial direction, a side of the peripheral wall having a needle groove, and a 1250236 from: a peripheral wall extending toward the needle groove; the shaft has a a first end portion a opposite to a second end portion of the first end portion, an intermediate portion connected to the second end: and at least one shot hole extending to the intermediate portion, the third portion being a second end portion of the bottom wall is spaced apart from the perforation in the direction of the axis; and the coupling element is formed of a plastic material, including a disk body surrounding the rotating shaft, A plurality of positioning portions extending from the peripheral surface of the disk body and extending to the injection hole of the rotating shaft are formed. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. Before the invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. >Reading Figure 3 4' The shuttle of the present invention is adapted to be placed outside the inner shuttle of a seaming machine (not shown), the shuttle containing a shuttle Body 40, - shaft 50, and element 6 〇. The shuttle body 4G is made of a metal material and surrounds the axis Z to accommodate the upper inner portion. The shuttle body 40 includes a peripheral wall 4 surrounding the axis z and a slit formed at one end of the peripheral wall 41. 42. A bottom wall 43 formed at the other end of the peripheral wall 41, and a through hole 44 ′ extending through the bottom wall 43 along the axis 具有. The side of the peripheral wall 41 has a needle groove 411, and a The dust wall 41 ^ ^ ^ 2 ' extending toward the needle groove 411 of the peripheral wall 41 and the side of the subsoil 43 adjacent to the needle groove 411 have a _ a slit, a knife needle (not shown) The needle drop groove 431, and in the embodiment, the bottom wall 43 of the shuttle body 40 further includes two corresponding 432, so that the shuttle body 40
1250236 該針道槽411及該落針槽431的平衡孔 的重心保持在正中央。 :轉軸50:，配合參閲圖5’‘是以金屬材質製成，該 包括一弟-端部51、一相反於該第一端部Η的第 -端部52、-連接於該第一、二端部51、52的中間部μ ，及-預備作為射出該屬合元件6〇用的射料孔54(後有詳 述）’其中，該第一端部51是用迫緊配合的方式結合於該 !壁43的穿孔44中，而該第二端部52與中間部幻是沿 ，該軸線z方向遠離於該穿孔44。且該射料孔^是由一沿 著該軸線方向且由第一端部51延伸至該中間部Μ的第一 孔段54卜以及一貫穿該中間部53且第一孔段呈垂直 正交的第二孔段542所構成。 該嚅合元件60,是採P0M (聚甲醛）材質製成，其是 在該轉軸50尚未與該梭體4〇組配時，即先以射出成型方 式與該轉軸50連結為一體，並且包括有一圍繞該轉軸z的 盤體61 (也可以視需求製成渦盤）、多數延伸出該盤體61 周面的齒部62、以及一體延伸至該轉軸5〇 .射料孔54内的 定位部63 ’於本實施例中，該定位部63的截面概是配合該 射料孔54而呈倒T形。 餘進一步地詳述本發明縫紉機之外梭的製造方法步驟 流程如下： 步驟一 ··請參閱圖7,首先，準備以金屬製成的一梭體 40及一轉軸5〇，該梭體4〇可以採用粉末成型方式成型，並 且其詳細結構如上，此不多贅述。 8 1250236 步驟二··自該轉輛5〇 &楚 該令間部53外〜部51上開設一延伸至至 出流道。 *面上的該射料孔^，以作為塑膠材料的射 内jr三4參閱圖6,將該轉轴50置入一射出模具細 =立，猎由_。的外環面與該模具鹰的内壁面之 。曰 ^⑽，且該模穴⑽可與該射料孔54相通連 步=二利用—喷嘴_對準並抵緊該轉軸$。的第一端 Ο1後，再將—塑膠物料以射出成型方式注人該射料孔54 ’此日卞’该塑膠物料能藉著該射料孔Μ的第—、二孔尸⑷ 、542而栗送該模請内（如圖中箭頭所示)，又 個模穴2 10、第-孔殺54：>，丨、；π丄+ 具 孔奴542以及大部份的第-孔段541，而 構成一具有該定位部63且延伸入該射料孔54的屬合元件6〇 ’促使該嚆合元件60能與該轉軸5〇固 相對_之虞。 篮且無產生 步驟五：開模後’取出與㈣合元件6()緊密固結的該 轉轴50 ’並將該轉軸50的第一端部51對準該梭體4〇的穿 孔44並迫壓如其内，如此，即可獲得一外梭成。 值得一提的是，在步驟五時，組配人員可視外梭扭力 需求，選用適當的該轉軸50外徑與該梭體4〇穿孔二孔徑 作配合，以獲致預期的扭力強度。 在上述說明中，相較於習知的外梭，本發明縫劫機之 外梭及其製造方法實具有許多功效及優點，兹歸納如戶· -、兼具高強度及輕量化要求：由於本發明的=梭體 1250236 ΓΓΓ金屬材質製造，因此該梭體40在進行該勾尖川 2、^卫時’較為方便1會有習知射出成型的塑膠外 ^大，因強度與勃性的不足而動概容易有斷裂的情形， =維持其使用壽命性，加上該屬合元件60改採塑膠材 '、+亦有效地減輕重量，故能符合強度及輕量化的要求。1250236 The center of gravity of the balance groove of the needle track groove 411 and the needle drop groove 431 is maintained at the center. The rotating shaft 50: is made of a metal material, and includes a younger end portion 51, a first end portion 52 opposite to the first end portion, and is connected to the first The intermediate portion μ of the two end portions 51, 52, and - is prepared as a shot hole 54 for emitting the conjugate element 6 (described later in detail), wherein the first end portion 51 is tightly fitted The manner is incorporated in the perforations 44 of the wall 43 and the second end 52 is slid along the intermediate portion, the axis z being remote from the perforations 44. And the projecting hole is formed by a first hole segment 54 extending along the axial direction and extending from the first end portion 51 to the intermediate portion, and a first hole segment extending perpendicularly to the intermediate portion 53 The second hole section 542 is formed. The splicing element 60 is made of POM (polyoxymethylene) material, and when the rotating shaft 50 is not assembled with the bobbin 4, it is first integrated with the rotating shaft 50 by injection molding, and includes There is a disk body 61 surrounding the rotating shaft z (which can also be formed as a scroll), a plurality of teeth 62 extending from the circumferential surface of the disk body 61, and a positioning integrally extending into the rotating shaft 5. In the present embodiment, the positioning portion 63 has a substantially T-shaped cross section in cooperation with the injection hole 54. Further, the flow of the method for manufacturing the shuttle outside the sewing machine of the present invention is as follows: Step 1 · Please refer to FIG. 7. First, a shuttle body 40 made of metal and a rotating shaft 5〇 are prepared, and the shuttle body 4〇 It can be molded by a powder molding method, and its detailed structure is as described above, and will not be described again. 8 1250236 Step 2 · From the transfer 5 〇 & Chu The inter-section 53 outside the section 51 opens an extension to the outflow path. * The injection hole ^ on the surface is used as a plastic material. Jr 3 is shown in Fig. 6. The rotation shaft 50 is placed in an injection mold to be fine. The outer torus is the inner wall of the eagle with the mold.曰 ^(10), and the cavity (10) can be in communication with the injection hole 54. The second nozzle is aligned and abuts against the spindle $. After the first end Ο1, the plastic material is injected into the injection hole 54' by injection molding. The plastic material can be passed through the first and second holes (4) and 542 of the injection hole. The chestnut is sent to the mold (as indicated by the arrow in the figure), another cavity 2 10, the first hole 54:>, 丨, π丄+ with hole 542 and most of the first hole 541, and a constituting member 6'' having the positioning portion 63 and extending into the injection hole 54 urges the coupling member 60 to be slanted relative to the rotating shaft 5. The basket does not generate step 5: after the mold is opened, 'the shaft 50' which is closely consolidated with the (4) joint element 6 () is taken out and the first end portion 51 of the shaft 50 is aligned with the through hole 44 of the shuttle body 4〇 and If you are under pressure, you can get an external shuttle. It is worth mentioning that, in step 5, the assembly personnel can select the appropriate outer diameter of the shaft 50 to match the diameter of the bobbin 4 bore perforation to obtain the expected torque strength. In the above description, compared with the conventional outer shuttle, the shuttle of the sewing machine of the present invention and the manufacturing method thereof have many functions and advantages, and are summarized as households, and have high strength and light weight requirements: Inventive = shuttle body 1250236 made of bismuth metal material, so the shuttle body 40 is more convenient when performing the hook tip 2, wei wei 1 will have a well-known plastic injection molding, due to the lack of strength and boarness The movement is prone to breakage, = maintain its service life, and the composite component 60 is changed to plastic material ', + also effectively reduces weight, so it can meet the requirements of strength and light weight.
-、加工製造容易、不良率低丨如上述，本發明是先 :該屬合元件60以射出成型方式與該轉轴5〇固結為一體 :’再與該梭體40組接’相對習知採用金屬分層逐段加工 I成的金屬外梭而言，在製造加工上較簡易、丨良率低， 而且’也因嚆合元件60與轉軸5〇採射出-體配製，所以 ，在組配及物料的管理上亦較簡便。 准以上所述者，僅為本發明之較佳實施例而已，當不 ί以此限U發明實施之範圍’即大凡依本發”請專利 靶圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋立體圖，說明習知縫紉機之外梭； 圖2是一剖視圖，說明習知縫鲂機外梭的剖面結構； 圖3疋立體圖，說明本發明縫紉機之外梭的一較佳 實施例，· 圖4疋底視圖，說明本發明上述較佳實施例_ ,外 梭的底視結構； 圖5是一剖視圖 著5-5截面所剖切的一 ’說明本發明上述較佳實施例中，沿 梭體、一轉軸，及一嚅合元件的組成 10 1250236 結構； 圖6是一剖視圖，說明本發明上述較佳實施例中，該 '嚅合元件以射出方式與該轉軸結合；以及 、 圖7是一流程圖，說明本發明上述較佳實施例的製造 流程。 11 1250236 【主要元件符號說明】 40••… …·梭體 53••… •…中間部 41 ·.··· …·周壁 54"… 射料孔 411 •…針道槽 541… •…第一孔段 412… •…勾尖 542… •…第二孔段 42·.··. .…開口 60••… …·嚅合元件 43…… •…底壁 61 ··..· …·盤體 431… •…落針槽 62…·· …·齒部 432… •…平衡孔 63••… •…定位部 44…… •…穿孔 200… •…模具 50…… •…轉軸 210… •…模穴 51…… •…第一端部 300… •…喷嘴 52…… •…第二端部 z....... •…軸線- The manufacturing process is easy, and the defect rate is low. As described above, the present invention is first: the conjugate element 60 is integrally integrated with the rotating shaft 5 by injection molding: 're-joining the shuttle 40' It is known that the metal outer shuttle which is processed by metal layer by section is simple in manufacturing and processing, and the yield is low, and it is also prepared by the coupling element 60 and the rotating shaft 5〇, so The management of the assembly and materials is also relatively simple. The above is only the preferred embodiment of the present invention, and is not limited to the scope of the implementation of the U invention, that is, the simple equivalent of the patent target and the description of the invention. And the modifications are still within the scope of the patent of the present invention. [Simplified illustration of the drawings] Fig. 1 is a perspective view showing a shuttle outside the conventional sewing machine; Fig. 2 is a cross-sectional view showing the sectional structure of the outer shuttle of the conventional sewing machine Fig. 3 is a perspective view showing a preferred embodiment of the shuttle of the sewing machine of the present invention, Fig. 4 is a bottom view showing the above-described preferred embodiment of the present invention, and the bottom view of the outer shuttle; Fig. 5 is a cross-sectional view 5-5 is a section of the preferred embodiment of the present invention, along the shuttle body, a rotating shaft, and a composite component 10 1250236 structure; FIG. 6 is a cross-sectional view showing the above preferred embodiment of the present invention. In the embodiment, the 'coupling element is combined with the rotating shaft in an injection manner; and FIG. 7 is a flow chart illustrating the manufacturing process of the above preferred embodiment of the present invention. 11 1250236 [Explanation of main component symbols] 40••... …·shuttle Body 53••... •...Intermediate part 41 ·······Week wall 54"...jecting hole 411 •...needle groove 541... •...first hole section 412... •...hook 542... •...second Hole section 42····. .... opening 60••...·嚅合部件43... •...Bottom wall 61 ·······The disk body 431...•...The needle drop groove 62...···· Tooth portion 432... •...balance hole 63••... •... positioning portion 44... •...perforation 200... •...mold 50...•...rotor 210...•...cavity 51...•...first end 300... •...nozzle 52... •...second end z....... •...axis
1212