201221269 六、發明說明： 【發明所屬之技術領域】 本發明係有關一種結合塑膠及金屬材料之方法及結構，特 別是關於一種行動電話或消費性電子產品之殼之製法及結 構。所製成之產品它提高了金屬元件之加工與設計上之彈性以 及可行性，同時也提升了外觀之美感、結構強度與製造之精確 性。又，它也解決了傳統之塑膠構件組合時精確性較差而影響 組裝之問題。 【先前技術】 在消費性電子產品應用金屬外殼是越來越主流之趨勢，因 其產品可以更薄、更堅固與更具特殊之金屬質感。許多傳統之 金屬成型之方法(例如精密壓鑄成型、鍛造技術與沖壓技術)已 經運用於具有金屬外殼之產品。然而，由精密壓鑄成型製成之 通常具有較多之孔洞、表面缺陷及尺寸上之變形，所以必 ^進行昂貴的二次加工及處理。關於鍛造技術，鍛造出之金屬 兀，之多孔性較少，但由於金屬不易變形，所以還要進行成本 更高之機械加工。又，雖然沖壓技術具有兩好之品質及較小之 尺寸差異，但能進行沖壓之金屬元件十分有限，當要進行肋 广、凸紋、或厚度變化時，沖壓技術則難以達成。因此，現 技術之問題可整理如下： [1]鍛造技術進行製作金屬元件，_冷、熱鍛進行其多 *較>、’但是雖然可以在金屬元件上製造出深淺不一之機構 且^厚度不均，但其需利用電腦化數值控制車床(CNC)加 具有加工耗時及成本過高之缺點。 ^精密壓鑄成型進行製作金屬元件，則成品之強度不 ί電表面會受到影響而破壞美觀，需要高價 的電月®化數值控制車床(CNC):次加工與手工修復。 |法提供㈣品倾小尺相產品製作，但其 .，，、法在邊財壓—厚深衫—或結構複狀機構件。 201221269 【發明内容】 本發明之目的在於提供一種結合塑膠及金屬材料之 及結構，它能解決現有問題例如鍛造技術具有較差之 性故需要進行昂貴的電腦化數值控制車床加工、精密壓g 本過高以及沖壓技術之產品應用極為有限等缺點。 本發明係提供一種結合塑膠及金屬材料之方法，其包括： 鑽孔步驟：施加雷射光束於一金屬元件之一預定表面上， 以便形成複數個細微孔洞；該細微孔洞係被定義為具有一介於 0.05mm至0.5mm之孔徑以及具有一孔深，該孔深係小於等於 該金屬το件之厚度之-半；每—細微孔聽具有—粗輪内表 面； 一模具射出步驟：提供一模具，該模具設有一模穴，將一埶 融之塑膠材料射出至該位於該預定表面上之模具之模穴内，g 此射成型出過程中’該熱融之塑膠材料會填入該複數個細微孔 洞内，且該熱融之塑膠材料之溫度係高於該塑膠材料之熔點； 固化步驟：將該熱融之塑膠材料冷卻至低於其熔點以下， 以便使彳牙该塑膠材料變成一固化之塑膠材料，移除該模具，該 材料係卡固於該金屬元件之複數個細微孔洞之‘ 又本發明亦提供一種結合塑膠及金屬材料之結構，其包 括： ★ 一金屬元件，其具有至少一預定區域，該預定區域上係形 成複數個細微孔洞，該該細微孔洞係被定義為具有一介於 0.05mm至0.5mm之孔徑以及具有一孔深，該孔深係小於等於 該金屬兀件之厚度之一半；每一細微孔洞係具有一粗糙内表 面； 一固化之塑膠材料，其係卡固於該金屬元件之複數個細微 孔洞之粗糙内表面上。 【實施方式】 本發明係包括結合塑膠及金屬材料之方法及結構兩部份。 201221269 關於該方法，如第一圖所示’它主要包括一鑽孔步驟51、 一模具射出步驟52、及一固化步驟53。 關於此鑽孔步驟51 :如第二、第三、第四、第五A至五 C圖所示，施加雷射光束(例如透過一雷射處理機如第二圖所 示)於一金屬元件100(或稱為金屬構件，例如為一行動電話或 消費性電子產品之殼)之一預定表面110上，以便形成複^個 細微孔洞200;該細微孔洞200係被定義為具有一介於〇 〇5mm 至〇.5_之孔徑HI以及具有一孔深H2，該孔深H2係小於 等於該金屬元件之厚度T之一半；每一細微孔洞係具有一粗糙 内表面210。 關於此模具射出步驟52 :如第六、第八及第九圖所示， 其係提供一模具400 ’該模具400設有一模穴41〇，將一熱融 之塑膠材料300射出至該位於該預定表面11〇上之模具4〇〇之 模穴410内，在此射出成型過程中，該熱融之塑膠材料3⑻會 填入該複數個細微孔洞200内，且該熱融之塑膠材料3〇〇之溫 度係高於該塑膠材料300之熔點。 關於此固化步驟53，請參閱第六及第七圖，將該熱融之 塑膠材料300冷卻至低於其熔點以下，以便使得該塑膠材料 300變成一固化之塑膠材料3〇〇，移除該模具4〇〇，該固化之 塑膠材料300係卡固於該金屬元件之複數個細微孔洞2〇〇之粗 糙内表面210上。 根據上述之方法，將可製造出一結合塑膠及金屬材料之結 構，其係包括一金屬元件100及一固化之塑膠材料3〇〇,如第 七圖所示。 關於此金屬元件100，其具有至少一預定區域110，該預 定區域110上係形成複數個細微孔洞200，該該細微孔洞200 係被定義為具有一介於〇.〇5mm至〇.5mm之孔徑H1以及具有 一孔深H2，該孔深H2係小於等於該金屬元件丨⑻之厚度τ 之一半，母一細微孔洞200係具有一粗糖内表面21〇。 關於此固化之塑膠材料300，其係卡固於該金屬元件1〇〇 201221269 之複數個細微孔洞200之粗糙内表面21〇上。 構，^外/：第八及第九圖所示，不論是上述之方法或是結 Ld”00係具有一孔轴220其係大體上垂直於該 ϊί 1=31一$細微孔洞200之粗糖内表面210係包括 塑膠材料300與該金屬元件100緊密的結 开祙U ’如第十圖所示，在該模具射出步驟52前，該金屬 ^牛100之預定表面110上係被裝飾及加卫而形成一修飾層 150，该修飾層係選自一保護膜、一塗層其中之一。/ 曰·’該雷射光束係最好是至少大於15W (Watts，瓦）； 且该熱融之塑膠材料300是被保持在攝S 180至350度⑹間。 另外’關於該複數個細微孔洞2⑻，係分佈 毫米至少一細微孔洞。 射方面，此模具400之溫度大約為9〇(。〇且此 mu擠料部前段、擠料部中間、及擠料部後 ΐ + 疋3GG(°C)。此射出壓力是保持在⑽_) 且此速度保持在50mm/s。 基於本發明之實測結果，此最大之結合力大 25 kgf/mm2而此最大之橫切剪力強度大約為L5 kgf/mm2 : · 本發明之優點及功效可歸納為： 此塑膠材料可以在埋入射出成 構件)上，如此，其允許在設計上有極大^^ 件可在埋人射出雜前先進行表面裝飾，例 包加亡保5蒦膜或是塗層(鍍層”此工具設計可以被應用以 避免破壞埋入射出時金屬元件之外觀。 μ 前續碰鑄或鍛造她，本案之綠可以提供 在車父低的成本下具有堅固的成品。 【圖式簡單說明】 第一圖係本發明之方法之流程圖 201221269 第亡圖係雷射處賴之示意圖 =====元件之示意圖 笛石A雷射先束來產生細微孔洞之示意圖 ^五=圖係為細微孔洞尚未形成之示意圖 f五Β圖係為細微孔洞正在形成之示意圖 第五C，係為繼續形成細微孔洞之示意圖 第六圖係為顯示模具射出步驟之示意圖 第七圖係為顯示固化步驟之示意圖 2公=為在射料填入前之細微孔洞之粗糙内表面之放大剖 視不意圖 第九，係為在㈣填人後之細微孔狀粗糙内表面之放大剖 視示意圖 第十圖係在金屬元件上修飾層之示意圖 【主要元件符號說明】 100金屬元件 150修飾層 210粗糙内表面 300塑膠材料 410模穴 52模具射出步驟 H1孔徑 T厚度 預定表面 200細微孔洞 220孔轴 400模具 51鑽孔步驟 53固化步驟 H2孔深201221269 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method and structure for combining plastic and metal materials, and more particularly to a method and structure for a mobile phone or a casing of a consumer electronic product. The resulting product enhances the flexibility and feasibility of processing and designing metal components while also improving the aesthetics, structural strength and manufacturing accuracy of the exterior. Moreover, it also solves the problem that the accuracy of the conventional plastic component combination is poor and affects the assembly. [Prior Art] The application of metal casings in consumer electronics is becoming an increasingly mainstream trend as products can be thinner, stronger and have a more distinctive metallic feel. Many traditional methods of metal forming, such as precision die casting, forging and stamping, have been applied to products with metal casings. However, precision die-casting usually has a large number of holes, surface defects, and dimensional deformations, so expensive secondary processing and processing must be performed. Regarding the forging technique, the forged metal crucible has less porosity, but since the metal is not easily deformed, it is necessary to carry out a higher-cost machining. Moreover, although the stamping technique has two good qualities and small dimensional differences, the metal components that can be stamped are very limited, and the stamping technique is difficult to achieve when rib width, relief, or thickness variation is required. Therefore, the problems of the current technology can be organized as follows: [1] Forging technology for the production of metal components, _ cold, hot forging to carry out its more * compares, 'but although it is possible to create a different structure on the metal components and ^ Uneven thickness, but it needs to use computerized numerical control lathe (CNC) plus the disadvantages of time-consuming and costly processing. ^Precision die-casting for the production of metal components, the strength of the finished product will not be affected and the aesthetics will be damaged. It requires a high-priced electric monthly control numerical control lathe (CNC): secondary processing and manual repair. | The law provides (4) the product of the product, but the method is in the side of the financial pressure - thick and deep shirt - or structural complex machine components. 201221269 SUMMARY OF THE INVENTION The object of the present invention is to provide a structure combining plastic and metal materials, which can solve the existing problems, such as the forging technology has poor performance, so it is necessary to carry out expensive computerized numerical control lathe processing, precision pressure g High and the application of stamping technology products are extremely limited. The present invention provides a method of combining a plastic and a metal material, comprising: a drilling step of: applying a laser beam to a predetermined surface of a metal component to form a plurality of fine holes; the fine hole system is defined as having a a pore diameter of 0.05 mm to 0.5 mm and having a depth of the hole which is less than or equal to the thickness of the metal τ ο - half; each of the fine holes has a inner surface of the coarse wheel; a mold ejection step: providing a a mold, the mold is provided with a cavity, and a molten plastic material is injected into the cavity of the mold on the predetermined surface, and the hot melted plastic material is filled into the plurality of molds during the molding process. The temperature of the hot-melt plastic material is higher than the melting point of the plastic material; the curing step: cooling the hot-melt plastic material below its melting point, so that the plastic material becomes a solidified The plastic material removes the mold, and the material is stuck in a plurality of fine holes of the metal component. The invention also provides a structure combining plastic and metal materials. The method comprises: a metal component having at least one predetermined area, wherein the predetermined area is formed with a plurality of fine holes, the fine hole system being defined as having a hole diameter of 0.05 mm to 0.5 mm and having a hole depth. The hole depth is less than or equal to one-half the thickness of the metal element; each of the fine holes has a rough inner surface; and a solidified plastic material is fastened on the rough inner surface of the plurality of fine holes of the metal element . [Embodiment] The present invention includes both methods and structures for combining plastic and metal materials. 201221269 Regarding the method, as shown in the first figure, it mainly includes a drilling step 51, a mold ejection step 52, and a curing step 53. Regarding this drilling step 51: as shown in the second, third, fourth, fifth A to fifth C diagrams, applying a laser beam (for example, through a laser processing machine as shown in the second figure) to a metal component 100 (or referred to as a metal member, such as a mobile phone or a casing of a consumer electronics product) on a predetermined surface 110 to form a plurality of fine holes 200; the fine holes 200 are defined as having a The aperture HI of 5 mm to 〇5_ and has a hole depth H2 which is less than or equal to one half of the thickness T of the metal component; each of the fine holes has a rough inner surface 210. Regarding the mold ejection step 52: as shown in the sixth, eighth and ninth figures, it is provided with a mold 400'. The mold 400 is provided with a cavity 41〇, and a hot-melt plastic material 300 is injected to the mold. In the cavity 410 of the mold 4 on the predetermined surface 11 ,, during the injection molding process, the hot-melt plastic material 3 (8) is filled into the plurality of micro-holes 200, and the hot-melt plastic material 3〇 The temperature of the crucible is higher than the melting point of the plastic material 300. With regard to the curing step 53, please refer to the sixth and seventh figures, the hot-melt plastic material 300 is cooled below its melting point, so that the plastic material 300 becomes a cured plastic material 3〇〇, and the The mold 4 is clamped to the rough inner surface 210 of the plurality of fine holes 2 of the metal member. According to the above method, a structure combining a plastic and a metal material can be manufactured, which comprises a metal member 100 and a cured plastic material 3, as shown in Fig. 7. Regarding the metal component 100, it has at least one predetermined area 110, and the predetermined area 110 is formed with a plurality of fine holes 200, which are defined as having an aperture H1 of between 〇5 mm and 〇5 mm. And having a hole depth H2 which is less than or equal to half the thickness τ of the metal component 丨 (8), the mother-fine pore 200 having a raw sugar inner surface 21 〇. The cured plastic material 300 is fastened to the rough inner surface 21 of the plurality of fine holes 200 of the metal element 1 201221269. Structure, ^ outside /: As shown in the eighth and ninth figures, either the above method or the knot Ld"00 has a hole axis 220 which is substantially perpendicular to the ϊί 1=31-$fine hole 200 of raw sugar The inner surface 210 includes a tight junction of the plastic material 300 and the metal component 100. As shown in the tenth figure, before the mold ejection step 52, the predetermined surface 110 of the metal 100 is decorated and added. Forming a decorative layer 150, the modifying layer is selected from one of a protective film and a coating. / 曰 · 'The laser beam system is preferably at least greater than 15W (Watts, watts); and the hot melt The plastic material 300 is held between 180 and 350 degrees (6). In addition, regarding the plurality of fine holes 2 (8), at least one fine hole is distributed in millimeters. In terms of radiation, the temperature of the mold 400 is about 9 〇 (. And the front part of the mu extruding part, the middle part of the extruding part, and the back part of the extruding part ΐ + GG 3GG (° C.) The injection pressure is maintained at (10) _) and the speed is maintained at 50 mm / s. Based on the measured results of the present invention The maximum combined force is 25 kgf/mm2 and the maximum cross shear strength is approximately L5 kgf/mm2: · The advantages and effects of the present invention can be summarized as follows: The plastic material can be embedded in the component, so that it allows a large number of designs to be surface-decorated before being buried. Adding a protective film or coating (coating) This tool design can be applied to avoid damaging the appearance of the metal component when it is buried. μ Before casting or forging her, the green of this case can be provided in the low of the car. The product has a sturdy finished product at the cost. [Simplified description of the drawing] The first figure is a flow chart of the method of the present invention 201221269 The chart of the dead is the schematic diagram of the laser. ===== Schematic diagram of the component Schematic diagram of the generation of fine pores ^5 = diagram is a schematic diagram of the micro-holes not yet formed. Figure 5 is a schematic diagram of the formation of fine pores. The fifth C is the schematic diagram of the formation of fine pores. The sixth figure shows the mold ejection. 7 is a schematic view showing the curing step. 2 is a magnified cross-sectional view of the rough inner surface of the fine hole before the injection of the shot is not intended to be ninth, which is the subtle after (4) filling. FIG. 10 is a schematic view showing a modified layer on a metal member. [Main element symbol description] 100 metal element 150 modified layer 210 rough inner surface 300 plastic material 410 mold cavity 52 mold injection step H1 aperture T Thickness predetermined surface 200 fine hole 220 hole shaft 400 mold 51 drilling step 53 curing step H2 hole depth