1313638 •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】 後件成型（Insert Molding)係指於模具内裝入預先準 備之異材質嵌件後注入塑膠，該嵌件一般為金屬或無機固 體等，熔融之塑膠與嵌件接合固化，製成複合產品之成型 ® 方法。嵌件成型可以利用塑膠之易成型性及彎曲性與異材 質嵌件之剛性及耐熱性製成複雜精巧之複合產品。採用嵌 件成型之方法可以省去後續組裝、密封等複雜工藝，大大 提高了生產效率。同時由於省去粘合劑塗覆、機械固定等 處理步驟，故，可節約製造成本。如今，嵌件成型廣泛用 於電子元件、電器元件、汽車元件等領域，已成為一種普 通之成型方法。 φ 請一併參閱圖1及圖2，一種習知之嵌件成型品10包 括一嵌件12及一塑膠件14。該嵌件12包括主體部122及 延伸部124，該延伸部124由該主體部122側面一端向外 - 水平延伸。該主體部122及延伸部124構成一 “L”型外 . 形。該塑膠件14包括收容部142及侧壁144，該側壁144 垂直設置於該收容部之一侧端部。該侧壁144由外侧部分 包覆該嵌件12。 上述嵌件成型品10中，由於嵌件12相對塑膠件14尺 寸較小。製備時，所採用模具之注射口一般設計在塑膠件 1313638 a 14之收容部142中心部分。故，注射口離嵌件較遠。當熔 融之塑膠通過注射口注入預設模具時，在注塑壓力下塑膠 流被分成多股，多股塑膠流將最終於較遠處彙聚。由於多 股塑膠流彙聚之時間相對較晚，塑膠之黏結性降低，故塑 膠流彙聚處易形成結合線，其用肉眼雖難以發現，但業界 普通技術人員採用火燒法一般可顯現。上述嵌件成型品10 之于A處形成之結合線與該嵌件12之延伸部124靠近該主 體部122中心之侧面之延伸方向重合，故該A處之機械結 鲁合強度較差。上述嵌件成型品10在組裝過程中受擠壓變形 大，殘餘應力累加，並在裝配所施加之外力下容易於該塑 膠流彙聚處即結合線處產生開裂，從而大大降低了該嵌件 成型品10之良率。 【發明内容】 鑒於上述内容，有必要提供一種結合強度較高、不易 產生開裂之嵌件成型品及製備方法。 φ 一種嵌件成型品，其包括主體部及延伸部，該延伸部 由該主體部侧面一端向外水平延伸，該延伸部靠近該主體 部中心之一端緣具有一突出部，且該突出部遠離該端緣之 - 外侧；該塑膠件部分包覆該嵌件，且該塑膠件相對於該突 . 出部之一侧形成一凸起部。 又，一種嵌件成型品之製備方法，其包括以下步驟：於 第一套模具内，注射成型嵌件；將嵌件裝入第二套模具中， 注射成型塑膠件，該嵌件包括主體部及延伸部，該延伸部 由該主體部側面一端向外水平延伸，該延伸部靠近該主體 1313638 •部中心之一端緣具有一突出部，且該突出部遠離該端緣之 外侧；該塑膠件部分包覆該嵌件，且該塑膠件相對於該突 出部之一侧形成一凸起部。 相對于習知技術，所述嵌件成型品之塑膠件由於具有 位於其嵌件角端之凸起部，在製備時，採用之模具可於此 處（對應凸起部）獲得較大之塑膠流流動空間、流動壓力 及流動速度，從而可改變塑膠流之結合線位置。由於此設 計可避免結合線與延伸部靠近該主體部中心之侧面延伸方 參 向重合，故該處之機械結合強度較南、不易產生開裂’進 而大大提高了嵌件成型品之良率。 【實施方式】 下面將結合附圖及較佳實施例對嵌件成型品做進一步 ' 詳細說明。 請一併參閱圖3與圖4，所示為本發明較佳實施例之 嵌件成型品30。該嵌件成型品30主要應用於電子產品之 赢 外殼，其包括一鼓件32及一塑膠件34。該欲件32包括一 主體部322及一延伸部324。該延伸部324由該主體部322 側面一端向外水平延伸。該主體部322及延伸部324構成 - 一近似“L”型之外形。該延伸部324靠近該主體部322中 _ 心之侧面325中間形成一朝外水平延伸之突出部326。 該塑膠件34包括一收容部342及一侧壁344，該侧壁 344從該收容部之一侧端部垂直延伸而成。該嵌件32被嵌 於該侧壁344之内侧。該塑膠件34相對於該嵌件32之突 出部326之兩侧形成兩凸起部346，該兩凸起部346分別 8 1313638 位於該突出部326之兩侧。也就是說，該嵌件32之突出部 326插入該塑膠件34之兩凸起部346之間，此設計可提高 該嵌件成型品30於此處之結合強度。 本實施例之後件成型品30採用喪件成型方法製備。由 於嵌件成型品30之塑膠件34具有位於嵌件32角端之凸起 部346 ’在製備時’採用之模具可於此處（對應凸起部) 獲得較大之塑膠流流動空間、流動壓力及流動速度，從而BACKGROUND OF THE INVENTION 1. Field of the Invention 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 the injection of plastic into a mold by inserting a pre-prepared material insert. The insert is usually made of metal or inorganic solid. The molten plastic is bonded to the insert to cure. Forming a composite product into a method. Insert molding can make complex and intricate composite products by utilizing the moldability and flexibility of plastics and the rigidity and heat resistance of different material inserts. The insert molding method can eliminate complicated processes such as subsequent assembly and sealing, and greatly improve 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 electronic components, electrical components, automotive components, etc., and has become a common molding method. φ Referring to Figures 1 and 2 together, a conventional insert molded article 10 includes an insert 12 and a plastic member 14. The insert 12 includes a body portion 122 and an extension portion 124 that extends outwardly from the side of the side of the body portion 122. The main body portion 122 and the extending portion 124 form an "L" outer shape. The plastic member 14 includes a receiving portion 142 and a side wall 144. The side wall 144 is vertically disposed at one side end of the receiving portion. The side wall 144 encloses the insert 12 by an outer portion. In the insert molding 10 described above, the insert 12 is relatively small in size relative to the plastic member 14. In the preparation, the injection port of the mold used is generally designed in the central portion of the receiving portion 142 of the plastic member 1313638 a 14 . Therefore, the injection port is far from the insert. When the molten plastic is injected into the preset mold through the injection port, the plastic flow is divided into multiple strands under the injection pressure, and the multi-strand plastic flow will eventually converge at a distant place. Since the time of gathering of a plurality of plastic streams is relatively late, the adhesiveness of the plastic is lowered, so that the plastic flow convergence area is easy to form a bonding line, which is difficult to find with the naked eye, but the ordinary technicians in the industry generally use the fire burning method. The bonding line formed by the insert molding 10 at A coincides with the extending direction of the side of the extending portion 124 of the insert 12 near the center of the main body portion 122, so that the mechanical knot strength at the A is inferior. The above-mentioned insert molding 10 is subjected to large deformation during assembly, residual stress is accumulated, and cracking is easily generated at the convergence point of the plastic flow, that is, the bonding line is greatly reduced under the force applied by the assembly, thereby greatly reducing the molding of the insert. Yield of 10 products. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide an insert molded article having a high bonding strength and which is less prone to cracking and a preparation method. Φ An insert molded article comprising a main body portion and an extending portion extending horizontally outward from an end of the side of the main body portion, the extending portion having a protruding portion near one end edge of the center of the main body portion, and the protruding portion is away from The outer edge of the end edge; the plastic part partially covers the insert, and the plastic piece forms a convex portion with respect to one side of the protruding portion. Moreover, a method for preparing an insert molded article, comprising the steps of: injecting a molded insert into a first set of molds; loading the insert into the second set of molds, and injecting a molded plastic part, the insert comprising a main body portion And an extending portion extending horizontally from an end of the side of the main body portion, the extending portion having a protruding portion near one end edge of the main body 1313638, and the protruding portion is away from the outer side of the end edge; the plastic piece The insert is partially covered, and the plastic member forms a convex portion with respect to one side of the protruding portion. Compared with the prior art, the plastic part of the insert molding has a convex portion at the corner end of the insert, and the mold used at the time of preparation can obtain a larger plastic here (corresponding to the convex portion). The flow space, flow pressure and flow velocity can change the position of the bonding line of the plastic flow. Since the design avoids the fact that the bonding wire and the extending portion are adjacent to the side extending direction of the center of the main body portion, the mechanical bonding strength of the bonding wire is relatively south and the cracking is less likely to occur, thereby greatly improving the yield of the insert molded article. [Embodiment] The insert molded article will be further described in detail below with reference to the accompanying drawings and preferred embodiments. Referring to Figures 3 and 4, there is shown an insert molded article 30 in accordance with a preferred embodiment of the present invention. The insert molded article 30 is mainly applied to a win casing of an electronic product, and includes a drum member 32 and a plastic member 34. The component 32 includes a body portion 322 and an extension portion 324. The extension portion 324 extends horizontally outward from one end of the side of the main body portion 322. The main body portion 322 and the extending portion 324 constitute an approximately "L" shaped outer shape. The extension portion 324 forms an outwardly extending protrusion 326 intermediate the side 325 of the body portion 322. The plastic member 34 includes a receiving portion 342 and a side wall 344 extending perpendicularly from a side end of the receiving portion. The insert 32 is embedded inside the side wall 344. The plastic member 34 defines two convex portions 346 on opposite sides of the protruding portion 326 of the insert 32, and the two convex portions 346 respectively 8 1313638 are located on both sides of the protruding portion 326. That is, the projection 326 of the insert 32 is inserted between the two projections 346 of the plastic member 34. This design enhances the bonding strength of the insert molding 30 here. After the present embodiment, the molded article 30 is prepared by a funnel molding method. Since the plastic piece 34 of the insert molded article 30 has the convex portion 346 at the corner end of the insert 32, the mold used at the time of preparation can obtain a large plastic flow flow space and flow here (corresponding to the convex portion). Pressure and flow velocity, thus
可改變塑膠流之結合線位置。由於此設計將結合線與延伸 部324靠近該主體部322中心之侧面延伸方向錯開，故， 該處之結合強度較強。該嵌件成型品3〇在組裝過程中可抗 擠壓變形，使該塑膠流彙聚處即結合線處不易產生開裂。 如圖3及圖4所示，該嵌件32和該塑膠件34還分別 形成有複數相互搭配之開口 327及固定柱347等輔助元 件。可以理解，上述嵌件成型品3〇中之兩凸起部346中位 於中間之凸起部346可省略，此設計同樣能滿足本發明之The position of the bonding line of the plastic flow can be changed. Since this design shifts the bonding line and the extending direction of the extending portion 324 near the center of the main body portion 322, the bonding strength at this portion is strong. The insert molded product 3 is resistant to extrusion deformation during the assembly process, so that the plastic flow convergence point, that is, the bonding line is less prone to cracking. As shown in FIG. 3 and FIG. 4, the insert member 32 and the plastic member 34 are respectively formed with auxiliary elements such as an opening 327 and a fixing post 347 which are matched with each other. It can be understood that the middle convex portion 346 of the two convex portions 346 of the above-mentioned insert molding product 3 can be omitted, and the design can also satisfy the present invention.
避免產生開裂、增強機械結合強度之目的。 下面針對上述實施例之喪件成型品3〇之 進一步詳細卿。 Μ万去做 該嵌件成型品30之製備方法包括以下兩步驟： 步H第—套模具内， 用碳_材料叫將一制:: 入第一套預設模具内成型。 耵 ^驟二：將嵌件裝人第二套模具中，注射成型塑 以塑膠件34採用丙烯猜-丁二稀丙稀_苯乙婦共聚物材 9 1313638 料(ABS) ’其熔點比PC材料低。首先成型熔融温度最高之 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’在模具成型第二射前，必須根據散件 材料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30最終之結構及尺寸無較大偏 差。 本製備方法中，由於先成型熔融溫度最高之原料，保 證了在成型塑膠件時產品不會熔融變形，因此可將不同顏 色或不同材質之塑膠原料成型在一件產品上，滿足消費者 對產品美觀度及結構要求。且可大大提高產能及生產良 率，降低生產成本。 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是一種習知嵌件成型品之立體示意圖。 圖2是圖1 所示之嵌件成型品之局部分解放大示查圓。Avoid cracking and enhance the strength of mechanical bonding. Further details of the funnel molded article 3 of the above embodiment will be described below. The preparation method of the insert molding 30 includes the following two steps: Step H: The mold is set in the mold, and the carbon material is called a system:耵^2: Inserting the insert into the second set of molds, injection molding plastic parts 34 using propylene guess-butadiene propylene benzophenone copolymer 9 1313638 material (ABS) 'its melting point ratio PC The material is low. First, the insert with the highest melting temperature is formed. Then, the plastic parts 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 that 'the mold shrinkage compensation value must be accurately calculated according to the characteristics of the bulk material and the mold structure characteristics before the second shot of the mold is formed, 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 30 are not greatly deviated. In the preparation method, since the raw material having the highest melting temperature is formed first, the product is not melt-deformed when the plastic part is molded, so that plastic materials of different colors or different materials can be formed on one product to satisfy the consumer's product. Aesthetics and structural requirements. It can greatly increase production capacity and production yield and reduce production costs. In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to 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 Fig. 1 is a perspective view of a conventional insert molded article. Fig. 2 is a partially exploded enlarged view showing the insert molded article shown in Fig. 1.
3所示之嵌件成型品之局部分解放大 體示意圖。 t大示意圖。 【主要元件符號說明】 嵌件成型品 30 1313638 嵌件 32 塑膠件 34 主體部 322 延伸部 324 側面 325 突出部 326 開口 327 收容部 342 侧壁 344 凸起部 346 固定柱 347 11A partial exploded view of the insert molded article shown in Fig. 3. t large schematic. [Main component symbol description] Insert molding 30 1313638 Insert 32 Plastic part 34 Main body 322 Extension 324 Side 325 Projection 326 Opening 327 Housing 342 Side wall 344 Raised portion 346 Fixed column 347 11