1330584 __ 099年06月11日修正替換’頁 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種模内轉印方法。 【先前技術】 [0002] 在模内成型制程中，僅依靠第一模具側在常溫狀態抽真 空將箔膜吸附定位於第一模具模穴内，因此箔膜拉深深 度受限於箱膜基體層本身在常溫狀態時之拉伸極限，例 如當箔膜本身被拉伸超過其自然狀態20%時可能會破損或 被拉斷；再者當第一模具模穴設計有小角度（特別是銳 角角度）結構時，由於抽真空產生之負壓大小及箔膜基 體層材料之常溫變形之限制，箔膜亦不易完全與模穴之 形狀相契合。 [0003] 基於以上習知技術之缺失，業界已出現對箔膜預先加熱 之制程，如習知技術中揭示了一種在合模前對箔膜進行 加熱之獨立加熱裝置，該加熱裝置係獨立於模具外部， 當需要加熱時需另外的傳送裝置將該加熱裝置送至公第 一模具具之間對箔膜加熱，加熱後，再由該傳送裝置將 該加熱裝置從公第一模具之間移出。因此，習知技術不 僅需要設計加熱裝置及配合其使用之傳送裝置，致使整 個設備結構龐大，成本較高；並且導致整個制程時間增 長，效率較低。且該項技術中亦存在箔膜拉深深度及小 角度結構有所限制之缺失。 【發明内容】 [0004] 基於以上，有必要提供一種可增加箔膜拉深深度及角度 範圍之模内轉印方法。 096115007 表單編號A0101 第4頁/共21頁 0993206242-0 1330584 099年06月11日修正替換頁 [0005] 一種模内轉印方法，包括以下步驟：將箔膜送入第一與 第二模具之間，其中第一模具具有一模穴，第二模具包 括一設有洩壓閥之排氣槽及一進氣口，該第二模具開設 一介質通道，該介質通道與一介質源連通以提供介質， 該介質通道包括一朝向該第一模具之開口，該介質通道 内設置一開關裝置以封閉或打開該介質通道開口；將箔 膜壓制於第一模具，箔膜與第一模具間形成一氣密空間 ;將該氣密空間抽真空，以將箔膜向第一模具之模穴内 吸附；將第一與第二模具合模；利用介質向箔膜加壓， 使箔膜完全貼合於第一模具之模穴内；向模穴***膠； 及冷卻開模。 [0006] 本方法可透過第一模具吹氣加壓及第二模具抽真空之雙 重作用下，極大延伸該兩模具間之箔膜本身之拉伸長度 ，且可達到使得箔膜即便在小角度及大拉深深度之情況 下也可與第二模具模穴完美貼合之效果。 【實施方式】 [0007] 請參閱圖1，一種模内轉印方法用來在注射成型之同時將 箔膜100上之圖案轉印於工件上，運用該模内轉印方法較 佳實施方式之模内轉印設備包括一送膜裝置10、一第二 模具20、一第一模具30、一壓合框40及一熱介質源90。 [0008] 請一併參閲圖2，該第一模具30開設一模穴31，該模穴31 包括一第一表面A1，一第二表面A2及一第三表面A3，該 模穴31開口位置該第一表面A1與該第二表面A 2間之連線 長度為L，該第一模具30於該模穴31内及其週圍開設有複 數排氣槽32，每一排氣槽32 —端與抽真空裝置相連。該 096115007 表單编號A0101 第5頁/共21頁 0993206242-0 1330584 __ 099年06月11日梭正替换頁 第一模具30週緣與該等排氣槽32間設置有一密封圈33。 [0009] 請繼續參閱圖1，該第二模具20包括一與該第一模具30之 模六31相對應之配合部21，鄰近該第二模具20之配合部 21開設複數排氣槽23，每一排氣槽23連接一可調洩壓閥 80，該洩壓閥80之洩壓閥值可根據成型條件所需之壓力 變化作調節。該第二模具20週緣與該等排氣槽23之間開 設有複數收容對應壓合框40之收容槽25，該等收容槽25 内裝設有密封圈27。 [0010] 請一併參閱圖3與圖4，該第二模具20穿過該配合部21開 設複數介質通道29，每一介質通道29包括一開設於該配 合部21之喇"八口狀之開口 2 91及自該開口 2 91之較細端向 該第二模具20内延伸之一通道本體295。每一介質通道29 之通道本體295遠離該開口 291處開設一流道296並透過 一管路91與該熱介質源90相連。每一介質通道29之通道 本體295遠離該開口 291之一端為一固定體298，該固定 體298開設一通孔。可以理解，該等介質通道29之數量應 視產品實際需求而定。每一介質通道29内裝設一開關裝 置，本實施方式中該開關裝置包括一柱塞70，該柱塞70 包括一與相應介質通道29之形狀相配合之圓臺狀柱塞頭 71、一與柱塞頭71相連之桿部73及一可固定於該桿部73 另一端之固定件75，該柱塞頭71用於封閉該介質通道29 之開口 291，該柱塞70之桿部73遠離該柱塞頭71之一端 穿過該固定體298之通孔並穿設於一彈性元件内，該彈性 元件在本實施方式中為一彈簧79，該固定件75固定於該 桿部73之末端將該彈簧79限制於該固定體298與該固定件 096115007 表單編號Α0101 第6頁/共21頁 0993206242-0 099年06月11日核正替换頁 I33Q584 75之間。 [0011] 該熱介質源90可為氣體，氣體可透過一電阻絲或者紅外 線加熱器（IR Heater)加熱後透過一調壓閥與該管路91 連通，其中電阻絲可以為可變電阻，因而可以根據成型 條件對氣體溫度作調節。另外，氣體也可以利用模具水 道產生之熱量加溫。調壓閥可根據成型壓力需要調節輸 出氣體之氣壓。 [0012] 該送膜裝置10包括分設於模具上下游之兩箔膜傳送輪13 及對箔膜傳送方向導向之兩導向輪15。 [0013] 該箔膜100包括一基體層與印刷於基體層之轉印層，該基 體層一般為PC/PBT等高分子材料製成，該轉印層一般為 用油墨或塗料印刷至該基體層上之圖案或文字。 [0014] 請一併參閱圖8，合模前，該送膜裝置10透過該傳送輪13 之傳送及該導向輪15之導向，將該箔膜100沿豎直方向自 上而下地送入第一模具30與第二模具20之間並定位，該 箔膜100覆蓋於該第一模具30表面，之後該等壓合框40將 該箔膜100壓制於該第一模具30表面，同時配合該等密封 圈33，使該箔膜100與該模穴31之間形成一第一氣密空間 。抽真空裝置透過該等排氣槽32將該第一氣密空間之部 分空氣抽出，將該箔膜100向該模穴31内吸入一部分，如 圖5所示。 [0015] 合模時，該等壓合框40分別收容於第二模具20之相應收 容槽25内並壓抵該第二模具20之密封圈27，使該箔膜 100與該第二模具20之間形成一第二氣密空間。此時該等 096115007 表單编號A0101 第7頁/共21頁 0993206242-0 099年06月11日修正替換頁 排氣槽23與該第m間相通。關閉該祕閥8〇，並 對》亥4壓閥80^：定-紐閥值。該熱介質源9{)透過該管 路91向5玄等介質通道29内通一定壓力之熱介質（本實施 方式中為熱空氣），熱空氣作動該等柱塞70向該第-模 具30側運動’露出該等介質通道29之開口 291，熱空氣通 過》亥等”貝通道29向該箔膜1〇〇吹氣並加壓（如圖4所示 )，忒治膜100之基體層軟化，且在該第一模具3〇側透過 該等排氣槽32抽真空及透過該第二模具20之介質通道29 ’主入熱空氣加溫與加壓之共同作用下該结膜1〇〇完全貼附 於該第#具30之模穴31内壁，如圖6所示。該熱介質源 90停止供氣，該等柱塞7〇在對應彈簧”之回復力作用下 反向運動，將相應介質通道29封閉。 [0016] 向°玄第一模具30之模穴31***膠’當該第-模具30之模 六31内氣壓大於該沒壓閥閥值時，該浪壓間㈣動打開 將名第模具30之模穴31内之氣體泄出，繼續射膠， 直到充滿》玄第才莫具3 〇之模穴31，如圖7戶斤示。保壓冷卻 最後開模取出成型品，該箔膜1 〇 〇之轉印層將附著於 成型品表面，其基體層由於該等壓合框4〇之壓制將同該 轉印層剝離。之後鬆開該等壓合框4〇 ’繼續開動該送膜 裝置10，該箔膜1〇〇位於前一成型週期内之基體層自該公 第一模具間移出，並開始下一成型週期。 [0017] 本發明之技術方案中透過合模後對該箔膜1〇〇加熱及在該 第一模具30侧抽真空與該第二模具20側吹氣加壓之雙重 作用，可極大延伸該箔膜100本身之拉伸長度，且可達到 使得該箔膜1 0 〇即便在小角度及大深度情況下也可與該第 096115007 表單編號A0101 第8頁/共21頁 0993206242-0 1330584 099年06月11日修正替換頁 一模具30之模穴31完美貼合之效果。例如當該第一模具 30之模穴31之第一表面A1、第二表面A2及第三表面A3之 尺寸關係符合關係式al+a2 + a3> = (l+20%)*L時，其中 . 第一表面A1之長度為a 1，第二表面A2之長度為a2，第三 表面A3之長度為a3，也可達到該箔膜100與該第一模具 30之模穴31完美貼合之效果。 [0018] 可以理解，作為本發明之另一較佳實施方式，將該第一 氣密空間抽真空之步驟可以在第一、第二模具合模後進 行。 [0019] 综上所述，本發明符合發明專利要件，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方式，舉 凡熟悉本案技藝之人士，在爰依本發明精神所作之等效 修飾或變化，皆應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 [0020] 圖1係運用本發明模内轉印方法較佳實施方式之模具之剖 視圖。 [0021] 圖2係圖1中所示第二模具之剖視圖。 [0022] 圖3與圖4係圖1中所示第一模具之介質通道部分之剖視圖 ，分別表示其兩不同之狀態。 [0023] 圖5係圖1中所示之第二模具與箔膜相貼合之剖視圖。 [0024] 圖6係本發明模内轉印方法較佳實施方式合模後並向模穴 内充氣狀態之剖視圖。 [0025] 圖7係運用本發明模内轉印方法較佳實施方式之模具合模 096115007 表單编號A0101 第9頁/共21頁 0993206242-0 1330584 099年06月11日梭正替换頁 後射膠成型狀態之剖視圖。 [0026] 圖8係本發明模内轉印方法較佳實施方式之流程框圖。 【主要元件符號說明】 [0027] 箔膜：100 [0028] 送膜裝置：10 [0029] 傳送輪：13 [0030] 導向輪：1 5 [0031] 第二模具：20 [0032] 配合部：21 [0033] 排氣槽：23、32 [0034] 收容槽：25 [0035] 密封圈：2 7、3 3 [0036] 介質通道：29 [0037] 開口 ： 2 91 [0038] 通道本體：295 [0039] 流道：296 [0040] 固定體：2 9 8 [0041] 第一模具：30 [0042] 模穴：31 [0043] 壓合框：40 096115007 表單編號A0101 第10頁/共21頁 0993206242-0 1330584 099年06月11日按正替換頁 [0044] [0045] [0046] [0047] [0048] [0049] [0050] [0051] 柱塞：70 柱塞頭：71 桿部：73 固定件：75 彈簧：79 洩壓閥：80 熱介質源：90 管路：91 096115007 表單編號A0101 第11頁/共21頁 0993206242-01330584 __June 11th, revised correction page </ br> 6. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to an in-mold transfer method. [Prior Art] [0002] In the in-mold forming process, only the first mold side is vacuumed at a normal temperature to adsorb and position the foil film in the first mold cavity, so the depth of the foil film is limited by the base layer of the box film. The tensile limit itself in the normal temperature state, for example, when the foil itself is stretched beyond its natural state by 20%, it may be broken or broken; in addition, when the first mold cavity is designed with a small angle (especially the acute angle) When the structure is limited, the foil film is not easily compatible with the shape of the cavity due to the negative pressure generated by vacuuming and the limitation of the normal temperature deformation of the foil substrate layer material. [0003] Based on the above-mentioned shortcomings of the prior art, a process for preheating a foil film has appeared in the industry. As in the prior art, an independent heating device for heating a foil film before clamping is disclosed, which is independent of the heating device. Outside the mold, when heating is required, an additional conveying device is required to send the heating device to the first mold member to heat the foil film. After heating, the heating device is removed from the male first mold by the conveying device. . Therefore, the conventional technology requires not only the design of the heating device but also the conveying device used in conjunction with it, resulting in a large structure and high cost of the entire device; and the entire process time is increased and the efficiency is low. In this technology, there is also a lack of depth of the foil film and a limitation of the small angle structure. SUMMARY OF THE INVENTION [0004] Based on the above, it is necessary to provide an in-mold transfer method which can increase the depth and angle range of the foil film. 096115007 Form No. A0101 Page 4/Total 21 Page 0993206242-0 1330584 Revision No. [0005] of June 11, 1999 [0005] An in-mold transfer method comprising the steps of: feeding a foil film into the first and second molds The first mold has a cavity, the second mold includes a venting groove provided with a pressure relief valve and an air inlet, the second mold defines a medium passage, and the medium passage communicates with a medium source to provide a medium, the medium passage includes an opening facing the first mold, a switching device is disposed in the medium passage to close or open the medium passage opening; pressing the foil film on the first mold, and forming a gas between the foil film and the first mold a dense space; vacuuming the airtight space to adsorb the foil film into the cavity of the first mold; clamping the first and second molds; pressurizing the foil film with the medium to completely conform the foil film Inside the cavity of a mold; injecting glue into the cavity; and cooling the mold. [0006] The method can greatly extend the stretched length of the foil film between the two molds under the double action of the first mold blowing pressure and the second mold vacuuming, and can achieve the foil film even at a small angle. And the case of large deep drawing depth can also be perfectly matched with the second mold cavity. Embodiments [0007] Referring to FIG. 1, an in-mold transfer method is used for transferring a pattern on a foil film 100 onto a workpiece while injection molding, and the in-mold transfer method is preferably used. The in-mold transfer apparatus includes a film feeding device 10, a second mold 20, a first mold 30, a press-fit frame 40, and a heat medium source 90. As shown in FIG. 2, the first mold 30 defines a cavity 31. The cavity 31 includes a first surface A1, a second surface A2 and a third surface A3. The cavity 31 is open. The length of the connection between the first surface A1 and the second surface A 2 is L. The first mold 30 is provided with a plurality of exhaust grooves 32 in the cavity 31 and around the cavity 31, and each of the exhaust grooves 32 is provided. The end is connected to the vacuuming device. The 096115007 Form No. A0101 Page 5 of 21 0993206242-0 1330584 __ June 11th, 2017 Shuttle Replacement Page A seal ring 33 is disposed between the periphery of the first die 30 and the exhaust slots 32. [0009] Please continue to refer to FIG. 1 , the second mold 20 includes a mating portion 21 corresponding to the mold 63 of the first mold 30 , and a plurality of exhaust slots 23 are defined adjacent to the mating portion 21 of the second mold 20 . Each of the exhaust slots 23 is connected to an adjustable pressure relief valve 80, and the pressure relief valve value of the pressure relief valve 80 can be adjusted according to the pressure change required for the molding conditions. A receiving groove 25 for receiving the corresponding pressing frame 40 is disposed between the peripheral edge of the second die 20 and the exhaust grooves 23, and the sealing groove 27 is disposed in the receiving groove 25. [0010] Referring to FIG. 3 and FIG. 4 together, the second mold 20 opens through the mating portion 21 to open a plurality of media passages 29, and each of the media passages 29 includes a saddle that is opened in the mating portion 21. The opening 2 91 and one of the channel bodies 295 extend from the thin end of the opening 2 91 into the second mold 20. The passage body 295 of each of the media passages 29 opens a passage 296 away from the opening 291 and is connected to the heat medium source 90 through a conduit 91. One end of the channel body 295 of each of the media channels 29 away from the opening 291 is a fixing body 298, and the fixing body 298 defines a through hole. It will be appreciated that the number of such media channels 29 will depend on the actual needs of the product. Each of the medium passages 29 is provided with a switch device. In the present embodiment, the switch device includes a plunger 70. The plunger 70 includes a truncated plunger head 71 matched with the shape of the corresponding medium passage 29. a rod portion 73 connected to the plunger head 71 and a fixing member 75 fixed to the other end of the rod portion 73, the plunger head 71 for closing the opening 291 of the medium passage 29, the rod portion 73 of the plunger 70 One end of the plunger head 71 passes through the through hole of the fixing body 298 and is disposed in an elastic member. In the embodiment, the elastic member is a spring 79. The fixing member 75 is fixed to the rod portion 73. The end is limited to the fixed body 298 between the fixed body 298 and the fixing member 096115007 Form No. Α0101, Page 6 of 21, 0993206242-0, June 11, 2009, and the replacement page I33Q584 75. [0011] The heat medium source 90 may be a gas, and the gas may be heated by a resistance wire or an infrared heater (IR Heater) and communicated with the pipeline 91 through a pressure regulating valve, wherein the resistance wire may be a variable resistor, thereby The gas temperature can be adjusted according to the molding conditions. In addition, the gas can also be heated by the heat generated by the mold water channel. The pressure regulating valve adjusts the pressure of the output gas according to the molding pressure. [0012] The film feeding device 10 includes two foil transfer wheels 13 disposed upstream and downstream of the mold, and two guide wheels 15 that guide the foil film conveying direction. [0013] The foil film 100 includes a base layer and a transfer layer printed on the base layer. The base layer is generally made of a polymer material such as PC/PBT, and the transfer layer is generally printed to the substrate by ink or paint. A pattern or text on a layer. [0014] Referring to FIG. 8 together, before the mold clamping, the film feeding device 10 is conveyed through the transfer wheel 13 and the guide wheel 15 to feed the foil film 100 from top to bottom in the vertical direction. Between a mold 30 and a second mold 20, the foil film 100 covers the surface of the first mold 30, and then the press-fit frame 40 presses the foil film 100 on the surface of the first mold 30 while cooperating with the mold 30. The sealing ring 33 forms a first airtight space between the foil film 100 and the cavity 31. The vacuuming device evacuates a portion of the first airtight space through the exhaust grooves 32, and sucks the foil film 100 into the cavity 31 as shown in Fig. 5. [0015] When the mold is closed, the press-fit frames 40 are respectively received in the corresponding receiving grooves 25 of the second mold 20 and pressed against the sealing ring 27 of the second mold 20 to make the foil film 100 and the second mold 20 A second airtight space is formed between them. At this time, 096115007 Form No. A0101 Page 7 of 21 0993206242-0 Correction Replacement Page, June 11, 099 The exhaust groove 23 communicates with the mth. Close the valve 8 〇, and the "Hai 4 pressure valve 80 ^: fixed - button threshold. The heat medium source 9{) transmits a certain pressure of heat medium (hot air in the present embodiment) to the medium medium passage 29 through the line 91, and the hot air actuates the plungers 70 to the first mold 30. The side movement 'exposes the opening 291 of the medium passage 29, and the hot air is blown and pressurized by the shell passage 29 to the foil film 1 (as shown in FIG. 4), and the base layer of the film 100 is treated. Softening, and vacuuming through the venting grooves 32 on the first mold 3 side and through the medium passage 29' of the second mold 20, the main film is heated and pressurized. Fully attached to the inner wall of the cavity 31 of the #30, as shown in Fig. 6. The heat medium source 90 stops supplying air, and the plungers 7 are reversely moved by the restoring force of the corresponding spring. The respective media channel 29 is closed. [0016] Injecting the glue into the cavity 31 of the first mold 30 of the first mold 30. When the air pressure in the mold block 31 of the first mold 30 is greater than the pressure of the pressureless valve, the pressure between the waves (four) will open the mold 30. The gas in the cavity 31 is released, and the glue is continued to be sprayed until it is full of "Xuan Dian", which has a mold hole 31, as shown in Figure 7. Pressure-Preserving Cooling Finally, the molded product is taken out, and the transfer layer of the foil film 1 is adhered to the surface of the molded article, and the base layer is peeled off from the transfer layer by the pressing of the press-bonding frame 4〇. Thereafter, the pressing frame 4 〇 ' is released to continue the film feeding device 10, and the base layer of the foil film 1 located in the previous molding cycle is removed from the male first mold, and the next molding cycle is started. [0017] In the technical solution of the present invention, the double action of heating the foil film 1 after the mold clamping and vacuuming the first mold 30 side and blowing the air pressure on the second mold 20 side can greatly extend the The stretched length of the foil film 100 itself can be achieved such that the foil film 10 〇 can be combined with the 096115007 form number A0101 page 8 / 21 pages 0993206242-0 1330584 099 even at small angles and large depths. On June 11th, the effect of the perfect replacement of the mold hole 31 of the mold 30 was corrected. For example, when the dimensional relationship between the first surface A1, the second surface A2, and the third surface A3 of the cavity 31 of the first mold 30 conforms to the relationship of al+a2 + a3> = (l+20%)*L, The length of the first surface A1 is a1, the length of the second surface A2 is a2, and the length of the third surface A3 is a3. The foil film 100 can also be perfectly matched with the cavity 31 of the first mold 30. effect. [0018] It will be understood that as another preferred embodiment of the present invention, the step of evacuating the first airtight space may be performed after the first and second molds are clamped. [0019] In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0020] Fig. 1 is a cross-sectional view of a mold in which a preferred embodiment of the in-mold transfer method of the present invention is applied. 2 is a cross-sectional view of the second mold shown in FIG. 1. 3 and FIG. 4 are cross-sectional views of the medium passage portion of the first mold shown in FIG. 1, respectively showing two different states. [0023] FIG. 5 is a cross-sectional view showing the second mold shown in FIG. 1 in contact with the foil film. 6 is a cross-sectional view showing a preferred embodiment of the in-mold transfer method of the present invention after the mold is closed and inflated into the cavity. 7 is a mold clamping method 096115007 using a preferred embodiment of the in-mold transfer method of the present invention. Form No. A0101 Page 9/Total 21 Page 0993206242-0 1330584 On June 11, 2009, the shuttle is replacing the page and shooting. A cross-sectional view of the gel forming state. 8 is a flow chart of a preferred embodiment of the in-mold transfer method of the present invention. [Main component symbol description] [0027] Foil film: 100 [0028] Film feeding device: 10 [0029] Transfer wheel: 13 [0030] Guide wheel: 1 5 [0031] Second mold: 20 [0032] Mating portion: 21 [0033] Exhaust tank: 23, 32 [0034] Storage tank: 25 [0035] Seal: 2 7, 3 3 [0036] Media channel: 29 [0037] Opening: 2 91 [0038] Channel body: 295 [0039] Flow path: 296 [0040] Fixed body: 2 9 8 [0041] First mold: 30 [0042] Cavity: 31 [0043] Press-fit frame: 40 096115007 Form number A0101 Page 10 of 21 0993206242-0 1330584 On June 11, 099, press the replacement page [0044] [0046] [0049] [0050] [0051] Plunger: 70 Plunger head: 71 Rod: 73 Fixings: 75 Spring: 79 Pressure Relief Valve: 80 Heat Medium: 90 Pipe: 91 096115007 Form No. A0101 Page 11 of 21 0993206242-0