1314898 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種注射成型品，尤其涉及一種嵌件成型 品及其製備方法。 【先前技術】 嵌件成型（Insert Molding)係指在模具内裴入預先準 備之異材質嵌件後注入塑膠。該異材質嵌件一般為金屬或 無機固體等，熔融之塑膠與異材質嵌件接合固化，製成複 合產品之成型方法。嵌件成型可利用塑膠之易成型性、彎 曲性，與異材質嵌件之剛性、耐熱性，製成複雜精巧之複 合產品。採用嵌件成型之方法可省去後續解裝、密封等複 雜工藝，大大提高了生產效率。同時由於省去了粘合劑塗 覆、機械固定等處理步驟，所以可節約製造成本。如今， 嵌件成型廣泛用於消費性電子產品等領域，已成為一種普 通之成型方法。 目前，為了追求美觀以及較舒適之手感，部分消費性 子產品採用由熱塑性彈性原料（Therm〇plastic Elastomer，TPE)製備之外殼。同時考慮到消費性電子產品 1機械強度，其外殼-般細具有熱塑性彈性件之後件成 。所述肷件成型品一般包括具有較高機械強度之嵌 4以及包覆或覆蓋該嵌件之一侧面之彈性件，以達到美 規及手感好之效果。 、 然而，由於上述嵌件成型品之彈性件之成型面較大， 及该彈性原料流動性能好，導致成型時，模腔内氣體以 1314898 及溶融塑膠中產生之水分、揮發 間而無法完全排除，會造成水a氧體4足夠之排氣空 中進入成型品内部形成氣泡，卜、揮發f氣體於成型過程 包。目前，業界常用之解決方、去從而產°口表面將出現小鼓 去係於成型模具内增開排氣 槽同時使用具有抽氣裝置之成型設備。惟，即使這樣，亦 不能有效解決嵌件成型品之氣泡問題，而且增開排氣槽有 出現毛邊之隱患。 a 【發明内容】 春 鑒於上述内容，有必要提供一種可消除製備熱塑性彈 性件時產生氣泡，從而影響美觀及手感之嵌件成型品及其 製備方法。 一種嵌件成型品，其包括一嵌件及一彈性件，該嵌件 開設複數排氣孔，該彈性件覆蓋該殼體一側面並填充該複 數排氣孔。 又，一種嵌件成型品之製備方法，其包括以下步驟：在 • 第一套模具内注射成型一嵌件，該嵌件開設複數排氣孔； 將嵌件裝入第二套模具中，注射成型一彈性件，該彈性件 填充該複數排氣孔並覆蓋該嵌件殼體一侧。 上述實施例之嵌件成型品由於根據模流分析結果，在 預計會出現氣泡之位置，於嵌件開設複數排氣孔。使在嵌 件成型過程中’達到增加排氣空間，輔助排氣之作用。上 述實施例之嵌件成型品之彈性件由於沒有氣泡，從而具有 美觀及手感好之優點。 1314898 【實施方式】 士…下面將結合附圖及較佳實施例對嵌件成型品做進一步 洋細§兄明。 山》月同日守參閱圖1至圖3，所示為本發明較佳實施例之 =成：品20一。該嵌件成型品2〇主要應用於電子產品之 骑包1:嵌件21及一熱塑性彈性件25。該嵌件21 為-设體’ h括-独正方形之基底Μ及 =邊緣向上垂直延伸形成之側壁23。該基底22開設有複 數排氣孔27。該複數排氣孔27主要分佈於基底^ ^以及四個邊角處。該熱塑性彈性件25為—具有均句外 膜層，其覆蓋該基底22之外侧面，並填充該複數排 1 ^ 〜件成型品2 G採㈣件成型方法製備。該 ΓΙΓ/ 27之分佈可根據模流分析結果，於 件25過程中，達到增加排氣2:=該_生彈性 減少氣泡產生。 卜L輔助排氣之作用，從而 如圖4及圖5所示，為推本访_ 件之結合強度，每個料糾與熱塑性彈性 ^ ^ # ^ 纟孔孔27罪近該熱塑性彈性件25 — 氣孔之直徑。在本實施射，每個排 斗狀結構。可以理解，排氣孔27也可設 狀結構。㈣—側稍變大之錐 件u與咖.轉錢，能細 牛25緊畨結合，可解決其相互間附 1314898 著力不良之問題。 ' 需要說明：本發明嵌件成型品之嵌件結構並不限定於 — 上述實施例所述。如，該嵌件21之側壁23可省略，或者 該嵌件21為其他殼體形狀，只要其能提供足夠機械強度即 可。進一步，本實施例之熱塑性彈性件25亦可被其他非熱 塑性材質之彈性件取代，只要其具有在注射成型中產生氣 泡之缺點。 下面針對上述實施例之嵌件成型品20之製備方法做 • 進一步詳細說明。 該嵌件成型品20之製備方法主要包括以下三個步驟： 步驟一：在第一套模具内，注射成型嵌件21。該嵌件 21材質可採用碳酸丙烯酯材質（PC)或丙烯腈-丁二烯丙 烯-苯乙烯共聚物材質（ABS)。將熔融之PC或ABS材質注 射入第一套預設模具内成型。 步驟二：通過模流分析，演算出塑膠流動方向及困氣 位置，然後在嵌件21相應位置開設排氣孔27。嵌件21結 構之不同以及預嵌入之熱塑性彈性件25結構之不同，都將 改變排氣孔27之分佈。本實施例根據模流分析結構，排氣 孔27主要分佈於嵌件21之基底22之中央位置以及四個邊 角處。可以理解，當嵌件成型品20定型後，此步驟可省略， ‘並相應改變第一套模具，使一體注射成型27具有排氣孔之 嵌件21。 步驟三：將嵌件21裝入第二套模具中，注射成型熱塑 性彈性件25。該熱塑性彈性件25之熔點比PC或ABS材 1314898 質都低。首先成型熔融溫度最高之嵌件，然後成型熔融溫 ' 度最低、流動性最好之塑膠件可將不同顏色或不同特性之 — 塑膠原料成型在同一件產品中。 另外需要說明：在模具成型第二注射前，必須根據嵌 件材質之特性及模具結構特點，準確計算出嵌件之縮水率 補償值，精確設定嵌件之實際縮水率以確定第二套模具之 尺寸，才能保證嵌件成型品20最終之結構及尺寸無較大偏 差。 • 綜上所述，本發明確已符合發明專利要件，爰依法提 出專利申請。惟，以上所述者僅為本發明之較佳實施例， 舉凡熟悉本案技藝之人士，於援依本案發明精神所作之等 效修飾或變化，皆應包含於以下之申請專利範圍内。 【圖式簡單說明】 圖1係本發明嵌件成型品較佳實施例之立體示意圖。 圖2係圖1所示之嵌件成型品之俯視示意圖。 圖3係圖1所示之嵌件成型品之仰視示意圖。 圖4係圖1所示之嵌件成型品之局部剖面立體示意圖。 圖5係圖4所示之V處之局部放大示意圖。 【主要元件符號說明】 嵌件成型品 20 嵌件 21 基底 22 側壁 23 熱塑性彈性件 25 排氣孔 27 ¢, S. >- 101314898 IX. Description of the Invention: [Technical Field] The present invention relates to an injection molded article, and more particularly to an insert molded article and a method of preparing the same. [Prior Art] Insert Molding refers to injecting a plastic into a mold by inserting a pre-prepared material insert. The different material inserts are generally metal or inorganic solids, and the molten plastic and the different material inserts are bonded and solidified to form a composite product. The insert molding can be made into a complex and ingenious composite product by utilizing the plastic formability, the bending property, and the rigidity and heat resistance of the different material inserts. The insert molding method can eliminate the complicated processes such as subsequent disassembly and sealing, and greatly improve the production efficiency. At the same time, since the processing steps such as adhesive coating and mechanical fixing are omitted, the manufacturing cost can be saved. Today, insert molding is widely used in consumer electronics and other fields and has become a common molding method. At present, in order to pursue aesthetics and a more comfortable hand, some consumer sub-products are made of a shell made of Thermoplastic Elastomer (TPE). At the same time, taking into account the mechanical strength of the consumer electronics, the outer casing of the consumer electronics is made of a thermoplastic elastomer. The article molded article generally comprises an insert 4 having a high mechanical strength and an elastic member covering or covering one side of the insert to achieve an aesthetically pleasing and hand-feeling effect. However, due to the large molding surface of the elastic member of the insert molding and the good flow property of the elastic material, the gas in the cavity is not completely excluded by the moisture and volatilization generated in the 1314898 and the molten plastic during molding. , will cause water a oxygen body 4 enough exhaust air into the inside of the molded product to form bubbles, bu, volatile f gas in the molding process package. At present, the commonly used solution in the industry, the surface of the mouth will appear to be attached to the forming mold to open the exhaust groove while using the molding equipment with the suction device. However, even in this case, the problem of bubbles in the insert molded article cannot be effectively solved, and the venting groove has a hidden danger. a [Summary of the Invention] In view of the above, it is necessary to provide an insert molded article which can eliminate bubbles generated when preparing a thermoplastic elastic member, thereby affecting the appearance and feel, and a preparation method thereof. An insert molded article comprising an insert and an elastic member, the insert opening a plurality of venting holes, the elastic member covering a side of the casing and filling the plurality of vent holes. Moreover, a method for preparing an insert molded article, comprising the steps of: injection molding an insert in a first set of molds, the insert opening a plurality of vent holes; inserting the insert into the second set of molds, injecting An elastic member is formed, the elastic member filling the plurality of vent holes and covering one side of the insert housing. In the insert molded article of the above embodiment, a plurality of vent holes are formed in the insert at a position where bubbles are expected to occur in accordance with the results of the mold flow analysis. In the process of insert molding, the effect of increasing the exhaust space and assisting the exhaust is achieved. The elastic member of the insert molded article of the above embodiment has the advantages of good appearance and good hand feeling because it has no air bubbles. 1314898 [Embodiment] In the following, the insert molded article will be further elaborated in conjunction with the drawings and the preferred embodiment. The same as the preferred embodiment of the present invention is shown in Fig. 1 to Fig. 3. The insert molded product 2 is mainly applied to the riding bag 1 of the electronic product: the insert 21 and a thermoplastic elastic member 25. The insert 21 is a body h h--a square base Μ and a side wall 23 extending perpendicularly from the edge. The base 22 is provided with a plurality of vent holes 27. The plurality of vent holes 27 are mainly distributed at the base and the four corners. The thermoplastic elastic member 25 is provided with a uniform outer film layer covering the outer side of the substrate 22 and filled with the plurality of rows of 1 ^ -shaped molded articles 2 G (four) forming method. The distribution of the ΓΙΓ / 27 can be based on the results of the mold flow analysis, during the process of the process 25, to increase the exhaust gas 2: = the _ raw elasticity to reduce bubble generation. The function of the L assists the exhaust, so as shown in Fig. 4 and Fig. 5, in order to push the strength of the joint, each material is corrected to the thermoplastic elastic ^ ^ # ^ 纟 hole 27 is close to the thermoplastic elastic member 25 — The diameter of the vent. In this implementation, each bucket structure. It will be understood that the venting opening 27 may also be provided in a configuration. (4) - The side of the cone is slightly larger. The piece u and the coffee. Transfer money, can be combined with the fine cow 25, can solve the problem of poor adhesion between them. It is to be noted that the insert structure of the insert molded article of the present invention is not limited to the above-described embodiment. For example, the side wall 23 of the insert 21 may be omitted, or the insert 21 may be in other housing shapes as long as it provides sufficient mechanical strength. Further, the thermoplastic elastic member 25 of the present embodiment can also be replaced by other elastic members of a non-thermoplastic material as long as it has the disadvantage of generating bubbles in the injection molding. The preparation method of the insert molded article 20 of the above embodiment will be further described in detail below. The preparation method of the insert molded article 20 mainly comprises the following three steps: Step 1: In the first set of molds, the molded insert 21 is injected. The insert 21 may be made of propylene carbonate (PC) or acrylonitrile butadiene styrene-styrene (ABS). The molten PC or ABS material is injected into the first set of preset molds. Step 2: Through the mold flow analysis, the flow direction of the plastic and the trapped air position are calculated, and then the vent hole 27 is opened at the corresponding position of the insert 21. The difference in the structure of the insert 21 and the difference in the structure of the pre-embedded thermoplastic elastic member 25 will change the distribution of the vent holes 27. In the present embodiment, according to the mold flow analysis structure, the exhaust holes 27 are mainly distributed at the center position of the base 22 of the insert 21 and at four corners. It will be understood that this step may be omitted when the insert molded article 20 is finalized, and the first set of dies is changed accordingly so that the integral injection molding 27 has the insert 21 of the vent hole. Step 3: The insert 21 is loaded into the second set of molds, and the thermoplastic elastic member 25 is injection molded. The thermoplastic elastic member 25 has a lower melting point than PC or ABS material 1314898. First, the insert with the highest melting temperature is formed, and then the plastic part with the lowest melting temperature and the best fluidity can be molded into the same product in different colors or different characteristics. In addition, it is necessary to explain: Before the second injection of the mold, the compensation value of the shrinkage rate of the insert must be accurately calculated according to the characteristics of the insert material and the structural characteristics of the mold, and the actual shrinkage rate of the insert can be accurately set to determine the second set of molds. The size can ensure that the final structure and size of the insert molded article 20 are not greatly deviated. • In summary, the present invention has indeed met the requirements of the invention patent and has filed a patent application in accordance with the law. However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the insert molded article of the present invention. Figure 2 is a top plan view of the insert molded article shown in Figure 1. Figure 3 is a bottom plan view of the insert molded article shown in Figure 1. Figure 4 is a partial cross-sectional perspective view of the insert molded article shown in Figure 1. Fig. 5 is a partially enlarged schematic view showing a portion V shown in Fig. 4. [Main component symbol description] Insert molding 20 Insert 21 Base 22 Side wall 23 Thermoplastic elastic member 25 Vent hole 27 ¢, S. >- 10