201021368 六、發明說明： 【發明所屬之技術領域】 本發明係有關於一種繞線架及其製造方法，尤指一種 金屬射出成型（Metal Injection Molding，MIM)之繞線架及其 製造方法。 【先前技術】 一般馬達之定子結構，包含有繞線架以及纏繞於繞線 ❹架上之多組線圈’並使繞線架與線圈呈絕緣狀態配置，當 電流通過線圈時，可使馬達產生所需之磁場，然而，影響 馬達產生良好磁場之其中一項因素，為提供一較佳之繞線 架設計，以避免線圈於纏繞之過程中發生到傷或斷線；因 此，本發明人則以繞線架的製作為本案之研究課題。 如習知的繞線架，其主要包括一矽鋼片組、一上絕緣 架以及一下絕緣架；該矽鋼片組係由複數矽鋼片所疊設構 ®成，該矽鋼片組具有一基部、從該基部外周緣所凸伸出的 複數矩形條以及分別連接該等矩形條的一極爪，該矩形條 之周面則形成有多數尖角；該上、下絕緣架則分別部分爽 擎該石夕鋼片組並包覆該等尖角，藉此，以構成此一繞線 架。 此繞線架供纏繞多組線圈時，係將該等線圈分別對應 該等矩形條纏繞並固定於相對應之該上、下絕緣架上，藉 此’在繞線之過冑中，u防止該矩形條所形成之該 接觸該線圈並對該線圈造成到傷或斷線。 3 201021368 能 然而’習知的繞線架，其為了避免該矩形條所形成之 該等尖角對該線圈造成刮傷或斷線，故必須加裝該上 絕緣架以包覆該等尖角，俾將造成其成本之增加，此外， =增加該上、下絕緣架之組裝時間，進而降低製造之產 有鑑於此，本發明人係為改善並解決上述之缺失 特潛心研究並配合學理之運用，終於提出一種設計合理且 有效改善上述缺失之本發明。 【發明内容】 2明之—目@ ’在於可提供—種射出成型之繞線架 及其製以方法，俾具有節省成本的效果。 發月之另目的’在於可提供種射出成型之繞線 、及其製造方法’其係以金屬射出成型（MIM)法直接成型 繞線架，俾可駿製程之時間，㈣提昇製造之產能。 本發明之又一目的’在於可提供一種射出成型之繞線 架及其製造方法，其在以金屬射出成型法成型時，其臂邛 之斷面係呈多邊形，並在任二相㈣之接合處成型有一^ 形表面，以供線圈直接捲繞，俾具有保護線圈的效果。 為了達成上述之目的，本發明係提供一種射出成型之 ，線架’係由一基部、一臂部以及一絕緣層所構成；該臂 德該基部所延伸❿出，該臂部之斷面係呈多邊形，在任 二相鄰邊的接合處成型有-弧形表面；該絕緣層包覆該義 部與該臂部。 1 4 201021368 此外’本發明亦提供一種射出成型之繞線架的製造方 法，包括下列步驟：提供一混煉粉末、將該混煉粉末以射 出成孓方式製成一胚料、將該胚料中之結合劑熔脫成一半 成Ό〇對該半成品進行燒結、以及於燒結後之該半成品披 覆一絕緣層。 【實施方式】 有關本發明之詳細說明及技術内容，配合圖式說明如 下，然而所附圖式僅提供參考與說明用，並非用來對本發 明加以限制者。 請參圖及第二圖，本發明射出成型之繞線架 1係由基部、一臂部20以及一絕緣層30所構成。 肖基部10可為一筒體’且其上端面與下端面分別凸伸 出有複數護板11 ’該等護板11分別沿該基部1〇之端面圓周 呈90度角排列並互相對應，所述該護板㈣可為一矩形板 φ 者，但不限制。 該臂部20包含從該基部1〇之外周緣所凸伸出的複數矩 形條21以及分別連接該等矩形條21之一極爪烈，並在該矩 形條21之周面成型有複數弧形表面23，另外，從該極爪四 之兩侧上分別凸伸出有-擋塊24，該等擋塊24則分別對應 該等護板11設置，所述該基部1〇與該臂部2〇分別係以金層 射出成型（ΜΙΜ) —體成型者。 本發明繞線架i之材質可為石夕鋼、碳鋼、合金鋼、不 鏽鋼或硬質合金等，但不以此等為限制。 5 201021368 該絕緣層30係包覆該基部ι〇與該臂部2〇。 本發明可供安裝有多組線圈2，如第三圖及第四圖所 ，，該絕緣層30則使該臂部20與該線圈2呈絕緣狀態，該 等線圈2分別係纏繞於該等矩形條21上且其分別位在該擋 塊24與該護板丨丨之間，並相互對應，藉此，以構成例如馬 達之疋子、，’β構，其中，該基部1〇可供馬達之轉子結構（圖 中未示）穿設連接，然而本發明繞線架1亦可應用於一電 磁閥之.驅動機構（圖中未不限於僅能應用於馬達 髎之定子結構者。 本發明在安裝線圈2之過程中，該導線架之該矩形條 21周面處形成有該等弧形表面烈，以提供該線圈2於捲繞 過程中，可避免對線圈2造成刮傷或斷線，而具有保護線 圈2的效果；另外’毋需增設如習知的上、下絕緣架俾 具有節省成本的效果。 凊參閱第五圖，本發明射出成型之繞線架丨的製造方 ❹ 法，包括下列步驟： a) 提供一混煉粉末； b) 將該混煉粉末以射出成型方式製成一胚料； c) 將該胚料中之結合劑熔脫成一半成品； d) 對該半成品進行燒結；以及 e) 於燒結後之該半成品披覆一絕緣層。 八在上述流程中，於步驟a)中，該混煉粉末係由一金屬 粉末與一結合劑混煉製成，其係將該金屬粉末及該結合劑 進行混煉（Kneading)，即混合、加熱及攪拌，使該金屬粉 6 201021368 末均勻地分布在該結合劑基地上，以獲得該混煉粉末，此 過程稱之為餵料（Feedstock);其中，該金屬粉末（Powder) 之粒徑通常在20um以下，且選用之材質可為矽鋼粉末、碳 鋼粉末、合金鋼粉末、不鏽鋼粉末、硬質合金粉末或預混 合粉末，因金屬粉末之粒徑小於20um，故可獲得較佳之燒 結密度，一般其燒結密度可達95%以上，而該結合劑 (Binder)可為一塑膠原料者，但不限制。 在步驟b)中，將該混煉粉末加熱到易於流動溫度，再 ⑩ 以金屬射出成型（MIM)法注入於模穴内，並進行冷卻工 作，以成型該胚料，此過程可週而復始進行，以產生多數 該胚料，故又稱之為生胚（Green Parts)。 在步驟c)中，可利用溶劑淬取（Solvent Extraction)該 胚料内之該結合劑或以熱脫脂方式去除該胚料内之該結合 劑，加速該胚料熱脫脂速率，縮短生產之週期，所述熱脫 脂方式可將該胚料置入一加熱爐内，以熱脫脂方式去除該 @ 結合劑。 在步驟d)中，可採用真空脫脂燒結（Vacuum Sintering)，即真空氣氛、高溫：例如1100度01400度 C，將該胚料内之該結合劑完全去除，完成該胚料緻密化 作業，亦可採用還原氣氛，但真空及高溫之環境下，可獲 得較佳成品密度及機械性質。 在步驟e)中，最後披覆該絕緣層30於燒結後之該半成 品表面，以製成本發明繞線架1。 本發明在製造過程中，係以金屬射出成型法直接成型 7 201021368 該繞線架l，俾可縮短製程之時間，進而提昇製造之產 能。 請參閱第六圖至第八圖，係為本發明之另一實施例 圖，本實施例與前述實施例之差別在於前述該護板u可替 換為從該基部10兩端所分別凸伸出的一環牆12，該二環牆 12則分別對應§亥專檔塊24設置，並在該環牆12外周緣開設 有一固定槽13，該固定槽13係供一定位銷14穿接固定，而 該定位銷14則可定位於一電路板（圖中未示）上，其為本 ❿發明之另一實施態樣。 於上一實施例中，可供安裝有多組線圈2，如第九圖 所示，該等線圈2分別係纏繞於該等矩形條21上並分別位 在該擋塊24與該環牆12之間’且彼此相互對應，並具有前 ' 述實施例中相同之效果。 請參閱第十圖’係為本發明之又一實施例圖，本實施 例之該繞線架1係由基部1〇、從該基部1〇端面所延伸而出 φ 之二臂部20以及包覆該基部1〇與該臂部2〇之絕緣層3〇所構 成’該臂部20之斷面係呈多邊形，在任二相鄰邊的接合處 成型有一弧形表面23，而該二臂部20分別可供纏繞線圈 2 ’所述該臂部20可為一矩形柱者，但不限制，本實施例 為另一實施之態樣，並具有前述實施例中相同的效果。 綜上所述’應用本發明可達到縮短製程之時間，進而 提昇製造之產能並具有節省成本的效果’以解決習知技術 之種種缺失，實已具備高度產業利用價值。 201021368 【圖式簡單說明】 第一圖為本發明之立體示意圖。 第二圖為第一圖之2-2剖面的示意圖。 第二圖為本發明安裝線圈之示意圖。 第四圖為第三圖之4-4剖面的示意圖。 第五圖為本發明之步驟流程圖。 第六圖為本發明之另一實施例圖。 第七圖為第六圖之另—視角圖。 第八圖為第六圖之8-8剖面的示意圖。 第九圖為第六圖安裝線圈之示意圖。 第十圖為本發明之又一實施例圖。 【主要元件符號說明】201021368 VI. Description of the Invention: [Technical Field] The present invention relates to a winding frame and a method of manufacturing the same, and more particularly to a metal injection molding (MIM) winding frame and a method of manufacturing the same. [Prior Art] The stator structure of a general motor includes a bobbin and a plurality of sets of coils wound on the bobbin truss', and the winding bobbin is insulated from the coil. When the current passes through the coil, the motor can be generated. The required magnetic field, however, affects one of the factors that produce a good magnetic field in the motor, in order to provide a preferred bobbin design to avoid the occurrence of injury or breakage of the coil during winding; therefore, the inventors The production of the winding frame is the research topic of this case. The conventional winding frame mainly comprises a steel sheet group, an upper insulating frame and a lower insulating frame; the silicon steel sheet group is formed by stacking a plurality of silicon steel sheets, the silicon steel sheet group having a base and a a plurality of rectangular strips protruding from an outer periphery of the base and a pole claw respectively connected to the rectangular strips, wherein a peripheral surface of the rectangular strip is formed with a plurality of sharp corners; and the upper and lower insulating frames are partially cooled The illuminating sheet group is coated with the sharp corners to thereby form the bobbin. When the winding frame is used for winding a plurality of sets of coils, the coils are respectively wound corresponding to the rectangular strips and fixed on the corresponding upper and lower insulating frames, thereby preventing in the winding of the windings, u prevent The rectangular strip forms the contact with the coil and causes damage or disconnection to the coil. 3 201021368 A conventional winding frame which, in order to avoid the sharp corners formed by the rectangular strips, causes the coil to be scratched or broken, so the upper insulating frame must be added to cover the sharp corners. , 俾 will cause an increase in its cost, in addition, = increase the assembly time of the upper and lower insulation frames, thereby reducing the production of manufacturing. In view of this, the inventors have improved and solved the above-mentioned lack of special research and coordination with the academic In the application, a present invention which is reasonable in design and effective in improving the above-mentioned defects is finally proposed. SUMMARY OF THE INVENTION [2] The present invention provides a winding frame for injection molding and a method for manufacturing the same, which has a cost saving effect. Another purpose of the month is to provide a winding for injection molding and a manufacturing method thereof. The metal injection molding (MIM) method directly forms a winding frame, and the time of the manufacturing process is increased, and (4) the manufacturing capacity is improved. A further object of the present invention is to provide an injection-molded bobbin and a method of manufacturing the same, which, when formed by metal injection molding, have a polygonal cross section and are joined at any joint of two phases (four). A ^-shaped surface is formed for the coil to be directly wound, and the crucible has the effect of protecting the coil. In order to achieve the above object, the present invention provides an injection molding, the wire rack' is composed of a base portion, an arm portion and an insulating layer; the arm portion of the arm portion is extended and the cross section of the arm portion is In a polygonal shape, an arc-shaped surface is formed at the joint of any two adjacent sides; the insulating layer covers the portion and the arm portion. 1 4 201021368 Further, the present invention also provides a method for manufacturing an injection molded bobbin, comprising the steps of: providing a kneaded powder, preparing the kneaded powder into a billet by injection molding, and forming the billet The binder is melted into half of the crucible to sinter the semi-finished product, and the semi-finished product is coated with an insulating layer after sintering. The detailed description and technical content of the present invention are set forth below with reference to the accompanying drawings. Referring to the drawings and the second drawing, the wire frame 1 for injection molding of the present invention comprises a base portion, an arm portion 20 and an insulating layer 30. The base portion 10 may be a cylinder body and a plurality of guard plates 11 are respectively protruded from the upper end surface and the lower end surface thereof. The guard plates 11 are respectively arranged at an angle of 90 degrees along the circumference of the end surface of the base portion 1 and correspond to each other. The shield (4) may be a rectangular plate φ, but is not limited. The arm portion 20 includes a plurality of rectangular strips 21 projecting from the outer periphery of the base portion 1 and a pole claw respectively connected to the rectangular strips 21, and a plurality of curved shapes are formed on the circumferential surface of the rectangular strip 21 a surface 23, in addition, a stopper 22 is respectively protruded from both sides of the pole claw 4, and the stoppers 24 are respectively disposed corresponding to the shield 11 which is the same as the arm 2 〇 are formed by gold layer injection molding (ΜΙΜ). The material of the bobbin i of the present invention may be Shishan Steel, carbon steel, alloy steel, stainless steel or cemented carbide, etc., but is not limited thereto. 5 201021368 The insulating layer 30 covers the base ι and the arm 2 〇. The present invention can be installed with a plurality of sets of coils 2, as shown in the third and fourth figures, wherein the insulating layer 30 insulates the arm portion 20 from the coil 2, and the coils 2 are wound around the coils 2, respectively. The rectangular strips 21 are located between the stoppers 24 and the shields, respectively, and correspond to each other, thereby constituting, for example, a tweezers of a motor, wherein the base is available. The rotor structure (not shown) of the motor is connected by a connection. However, the bobbin 1 of the present invention can also be applied to a driving mechanism of a solenoid valve (the figure is not limited to the stator structure which can only be applied to the motor cymbal. In the process of installing the coil 2, the curved surface of the rectangular strip 21 of the lead frame is formed with the curved surface to provide the coil 2 during the winding process, and the coil 2 can be prevented from being scratched or broken. The wire has the effect of protecting the coil 2; in addition, there is no need to add a conventional upper and lower insulation frame, which has the effect of cost saving. 凊 Referring to the fifth figure, the manufacturing method of the wire-wound frame of the injection molding of the present invention. The method comprises the steps of: a) providing a mixed powder; b) mixing the mixture Powder made by injection molding a billet manner; c) melting the binding agent into a billet of the semi-finished off; D) sintering the semi-finished product; and e) firing the semi-finished product in the cladding of an insulating layer. In the above process, in the step a), the kneaded powder is prepared by kneading a metal powder and a binder, and kneading the metal powder and the binder, that is, mixing, Heating and stirring, the metal powder 6 201021368 is evenly distributed on the binder base to obtain the mixed powder. This process is called feeding (Feedstock); wherein the particle size of the metal powder (Powder) Usually below 20um, and the material selected may be niobium steel powder, carbon steel powder, alloy steel powder, stainless steel powder, cemented carbide powder or pre-mixed powder. Since the particle size of the metal powder is less than 20um, a better sintered density can be obtained. Generally, the sintered density can be more than 95%, and the binder can be a plastic raw material, but is not limited. In step b), the kneaded powder is heated to an easy flow temperature, and then 10 is injected into the cavity by a metal injection molding (MIM) method, and a cooling operation is performed to form the blank. This process can be repeated once and for all. Most of this billet is produced, so it is also called Green Parts. In step c), the binder in the billet may be solvent-evaporated or the binder in the billet may be removed by thermal degreasing to accelerate the thermal degreasing rate of the billet and shorten the production cycle. The thermal degreasing method can place the blank into a heating furnace to remove the @binding agent by thermal degreasing. In step d), vacuum squeezing and sintering, that is, vacuum atmosphere, high temperature: for example, 1100 degrees 0140 degrees C, the binder can be completely removed in the blank to complete the densification of the billet. A reducing atmosphere can be used, but in a vacuum and high temperature environment, a better finished product density and mechanical properties can be obtained. In the step e), the insulating layer 30 is finally coated on the surface of the semi-finished product after sintering to form the bobbin 1 of the present invention. In the manufacturing process, the invention is directly formed by metal injection molding. 7 201021368 The winding frame l can shorten the manufacturing process time and further improve the manufacturing capacity. 6 to 8 are diagrams of another embodiment of the present invention. The difference between this embodiment and the foregoing embodiment is that the shield u can be replaced from the two ends of the base 10 respectively. a ring wall 12, the two ring walls 12 are respectively disposed corresponding to the § hai special block 24, and a fixing groove 13 is formed on the outer periphery of the ring wall 12, and the fixing groove 13 is for a positioning pin 14 to be fixed and fixed. The locating pin 14 can then be positioned on a circuit board (not shown), which is another embodiment of the invention. In the previous embodiment, a plurality of sets of coils 2 are mounted, as shown in the ninth figure, the coils 2 are respectively wound around the rectangular strips 21 and are respectively located at the stoppers 24 and the ring wall 12 'between' and correspond to each other, and have the same effect as in the previous embodiment. Referring to the tenth figure, which is a further embodiment of the present invention, the bobbin 1 of the present embodiment is composed of a base portion 1 , a second arm portion 20 extending from the end surface of the base portion 1 and a package The base portion 1〇 and the insulating layer 3〇 of the arm portion 2〇 are formed in a polygonal shape, and a curved surface 23 is formed at a joint of any two adjacent sides, and the two arm portions are formed. 20 can be used to wrap the coil 2', and the arm portion 20 can be a rectangular column, but it is not limited. This embodiment is another embodiment and has the same effect as in the foregoing embodiment. In summary, the application of the present invention can achieve a shortened process time, thereby increasing the manufacturing capacity and having a cost-saving effect. In order to solve the various shortcomings of the prior art, it has a high industrial utilization value. 201021368 [Simple description of the drawings] The first figure is a perspective view of the present invention. The second figure is a schematic view of the section 2-2 of the first figure. The second figure is a schematic view of the mounting coil of the present invention. The fourth picture is a schematic view of the 4-4 section of the third figure. The fifth figure is a flow chart of the steps of the present invention. Figure 6 is a diagram of another embodiment of the present invention. The seventh picture is the other perspective view of the sixth figure. The eighth figure is a schematic view of the 8-8 section of the sixth figure. The ninth figure is a schematic view of the sixth embodiment of the mounting coil. The tenth figure is a diagram of still another embodiment of the present invention. [Main component symbol description]
10 ·. 11 .. 13 .. 20 · · 21 . · 23 ·. 30 .. 2 · · a〜e •繞線架 •基部 •固定槽 •臂部 •矩形條 •弧形表面 •絕緣層 •線圈 •步驟 12 14 22 24 環牆 定位銷 極爪 擋塊10 ·. 11 .. 13 .. 20 · · 21 . · 23 ·. 30 .. 2 · · a~e • Winding frame • Base • Fixing groove • Arm • Rectangular strip • Curved surface • Insulation • Coil • Step 12 14 22 24 Ring Wall Locating Pin Claw Stop