1289083 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種用於金屬基材之成型裝置，詳言 之’係一種用於金屬基材之具有電磁成形模具之複合成型 裝置。 【先前技術】 一般電子產品具有生命週期短之特性，因此生產所需之 模具從設計、製造到試模完成的速度，便成了影響製造商 > 競爭力的關鍵。過去電子產品之金屬殼件主要的成型方式 包括鑄造（鎂合金）及沖壓（鋁合金、鈦合金）方式，沖壓方 式雖然有生產速度快之優點，但是對於外形要求複雜之形 狀或精密尺寸之電子產品金屬殼件，卻常有有著成型能力 不佳，或是須經多道次成型修整，才足以達到電子產品之 金屬殼件之尺寸及形狀公差要求，由於製程道次的增加， 相對地也增加許多模具費用。 .因此，有必要提供一創新且富有進步性的一種用於金屬 基材之複合成型裝置，以解決上述問題。 【發明内容】 本發明之目的在於提供一種用於金屬基材之複合成型裝 置，該複合成型裝置包括一沖壓模具及一電磁成形模具。 該沖壓模具具有至少一機械式沖頭及至少一預成型模穴， 一待成型金屬基材設置於該預成型模穴上，利用該機械式 沖頭沖壓該待成型金屬基材，以形成一預成型金屬基材。 該電磁成形模具具有至少一電磁式沖頭及至少一成品模 107493.doc 1289083 八，該預成型金屬基材設置於該成品模穴上，一脈衝電流 提供至該電磁式沖頭，使該電磁式沖頭與該預成型金屬基 材產生互斥力，使該預成型金屬基材成形為一預定形狀， 忒預疋形狀係相對於該成品模穴之形狀。 本發明之複合成型裝置’係以電磁成型方式製作出產品 最終外型與表面之精緻圖形，而電磁成型具有高應變速率 之成型方式’能展現出非常好之塑性效果，並可抑制或減 少皺摺及回彈量。再者’本發明之裝置整合了沖壓成型與 電磁成型兩項技術，不僅保有沖壓模具大量生產的效率， 同時具備了電磁成型對於金屬材料特有之超塑性優點，故 能以較少的成型道次及較低的生產成本製造出，造型高低 段差變化大、具精緻紋路圖案且表面f感高的產品殼件。 【實施方式】 爹考圖1及圖2,其顯示本發明用於金屬基材之複合成型 裝置之示意圖。該複合成型裝置i包括一成型裝置2、一入 料裝置3、-傳送裝置4、_成型動力裝置$及—電源供應 裝置6。該成型裝置2包括-沖壓模具。、一電磁成形模具 22。該沖壓模具21包含一第—機械式沖頭2ΐι、一第一預 成型模穴23、-第二機械式沖頭212、一第二預成型模穴 24。該電磁成形模具22包含—第一電磁式沖頭221、一第 一成品模穴25、一第二電磁式沖頭222、-第二成品模穴 m出件27及—第二頂出件28。該成型動力裝置 5用以提ί"亥成型裝置2之動力，用以使該沖壓模具21之該 第機械式冲頭211、6玄第二機械式沖頭及該電磁成形 107493.doc 1289083 少皺摺及回彈量。再者，本發明之裝置整合了沖壓成型與 電磁成型兩項技術，不僅保有沖壓模具大量生產的效率， 同時具備了電磁成型對於金屬材料特有之超塑性優點，故 能以較少的成型道次及較低的生產成本製造出，造型高低 段差變化大、具精緻紋路圖案且表面質感高的產品殼件。 上述實施例僅為說明本發明之原理及其功效，並非限制 本發明。因此習於此技術之人士對上述實施例進行修改及 .變化仍不脫本發明之精神。本發明之權利範圍應如後述之 申請專利範圍所列。 【圖式簡單說明】 圖1顯示本發明用於金屬基材之複合成型裝置之示竟 圖； 圖2顯示本發明用於金屬基材之複合成型裝置之局部示 意圖； 圖3A及圖3B顯示本發明第一電磁式沖頭之作動示意 • 圖； ^ 圖3 C顯示本發明第一成型線圈組之示意圖；及 圖4A及圖4B顯示本發明第二電磁式沖頭之作動示意 圖；及 ^ 圖4C顯示本發明第二成型線圈組之示意圖。 【主要元件符號說明】 1 本發明用於金屬基材之複合成型裝置 2 成型裝置 3 入料裝置 107493.doc •10- 1289083 4 傳送裝置 5 成型動力裝置 6 電源供應裝置 7 待成型金屬基材 8 預成型金屬基材 9 成品 21 沖壓模具 22 電磁成形模具 23 第一預成型模穴 24 第二預成型模六 25 第一成品模穴 26 弟《—成品板穴 27 第一頂出件 28 第二頂出件 29 廢料 211 第一機械式沖頭 212 第二機械式沖頭 221 第一電磁式沖頭 222 第二電磁式沖頭 223 第一成型線圈組 224 導流塊 225 第二成型線圈組 226 壓料塊 227 通道 107493.doc -11 -[Technical Field] The present invention relates to a molding apparatus for a metal substrate, and more particularly to a composite molding apparatus having an electromagnetic forming mold for a metal substrate. [Prior Art] General electronic products have a short life cycle, so the speed of production from the design and manufacture of the mold to the completion of the test is the key to affecting the competitiveness of the manufacturer. In the past, the main forming methods of metal shells for electronic products include casting (magnesium alloy) and stamping (aluminum alloy, titanium alloy). Although the stamping method has the advantage of high production speed, it requires complex shapes or precise dimensions of the shape. The metal shell parts of the products often have poor forming ability, or must be multi-pass molding and trimming, which is enough to meet the dimensional and shape tolerance requirements of the metal shell parts of the electronic products. Due to the increase of the manufacturing process, the relative Increase the cost of many molds. Therefore, it is necessary to provide an innovative and progressive composite molding apparatus for a metal substrate to solve the above problems. SUMMARY OF THE INVENTION An object of the present invention is to provide a composite molding apparatus for a metal substrate, which comprises a stamping die and an electromagnetic forming die. The stamping die has at least one mechanical punch and at least one preforming cavity. A metal substrate to be formed is disposed on the preforming cavity, and the metal substrate to be formed is punched by the mechanical punch to form a stamping die. Preformed metal substrate. The electromagnetic forming mold has at least one electromagnetic punch and at least one finished mold 107493.doc 1289083. The preformed metal substrate is disposed on the finished mold cavity, and a pulse current is supplied to the electromagnetic punch to make the electromagnetic The punch creates a mutual repulsive force with the preformed metal substrate to shape the preformed metal substrate into a predetermined shape, the shape of the pre-twisted shape being relative to the shape of the finished cavity. The composite molding device of the present invention is formed by electromagnetic molding to produce a refined pattern of the final shape and surface of the product, and the electromagnetic molding has a high strain rate forming method, which can exhibit a very good plastic effect and can suppress or reduce wrinkles. Fold and rebound amount. Furthermore, the device of the present invention integrates two technologies of stamping and electromagnetic forming, which not only maintains the efficiency of mass production of stamping dies, but also has the advantages of electromagnetic molding for the unique superplasticity of metal materials, so that it can be formed with fewer molding passes. And low production cost, the product shell parts with high and low shape difference, exquisite grain pattern and high surface f feeling. [Embodiment] Referring to Fig. 1 and Fig. 2, there is shown a schematic view of a composite molding apparatus for a metal substrate of the present invention. The composite molding apparatus i includes a molding apparatus 2, a feeding apparatus 3, a conveying apparatus 4, a forming power unit $, and a power supply unit 6. The forming device 2 comprises a stamping die. , an electromagnetic forming mold 22 . The stamping die 21 includes a first mechanical punch 2, a first preform cavity 23, a second mechanical punch 212, and a second preform cavity 24. The electromagnetic forming mold 22 includes a first electromagnetic punch 221, a first finished mold cavity 25, a second electromagnetic punch 222, a second finished mold cavity m output member 27, and a second ejection member 28. . The forming power device 5 is used to improve the power of the merging device 2 for making the mechanical punch 211, 6 and the second mechanical punch of the stamping die 21 and the electromagnetic forming 107493.doc 1289083 less Wrinkles and rebounds. Furthermore, the device of the present invention integrates two technologies of stamping and electromagnetic molding, not only retains the efficiency of mass production of stamping dies, but also has the advantages of electromagnetic molding for the unique superplasticity of metal materials, so that fewer molding passes can be used. And low production cost, the product shell parts with high and low shape change, fine texture pattern and high surface texture. The above embodiments are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a composite molding apparatus for a metal substrate of the present invention; FIG. 2 is a partial schematic view showing a composite molding apparatus for a metal substrate of the present invention; FIG. 3A and FIG. FIG. 3C is a schematic view showing the first forming coil set of the present invention; and FIGS. 4A and 4B are views showing the operation of the second electromagnetic punch of the present invention; 4C shows a schematic view of the second forming coil set of the present invention. [Main component symbol description] 1 Composite molding device for metal substrate 2 Molding device 3 Feeding device 107493.doc • 10-1289083 4 Transfer device 5 Molding power device 6 Power supply device 7 Metal substrate to be molded 8 Preformed metal substrate 9 Finished product 21 Stamping die 22 Electromagnetic forming die 23 First preforming die 24 Second preforming die 6 25 First finished die cavity 26 Younger - Finished plate hole 27 First top output 28 Second Ejecting member 29 scrap 211 first mechanical punch 212 second mechanical punch 221 first electromagnetic punch 222 second electromagnetic punch 223 first forming coil set 224 guiding block 225 second forming coil set 226 Press block 227 channel 107493.doc -11 -