1297638 九、發明說明： 【發明所屬之技術領域】 本發明是，藉㈣岭形記錄f料專用光碟基板時 所，光碟基板成形模具、及光碟基板成形模具的鏡面板、 和刖述辆基板模具所成频齡的光碟。 【先前技術】 、 且2 際，形成出合模_定模具與可動模 籲 具的空腔時，對於配設於峡模具及可動模具之任一方模且 的外周環而言，可讓配設於固定模具及可動模具之任一方的 鏡面板可朝姆位置祕，並_可賴前述空腔容積而配 设的光碟基板成形模具。 贿述辆基板成形模具，在成形時具有—方模具的外 周環、與可對前述外周環朝相對位置移動所配設的鏡面板之 間t出現毛邊問題。而且’前述毛邊還具有在光碟基板訊號 面或朝訊號面對置的讀取面呈直交並朝垂直方向形成出突出 •，各種問題出現。換言之，前述毛邊斷裂而附著於訊號面 時會變成不良品、或即使毛邊沒有斷裂，也會造成觸感不佳、 造成後續工程加工時的問題。為了解決這闕題，在專利文 獻卜專散獻2即有記鑛決醜軸容。這些專利文獻是 f固定鏡面板9、或可_支持構件22的外周上，另設有固 疋構件鏡面板的外側環j卜可動側麼模器外周固定環部挪。 =且即使在k些構件丨卜25b、及外周環13、之間形成出 大出的毛邊，也要考量到前述毛邊的高度要低於訊號面或讀 取面。再者’大部分的__R規格較以讀取面為基準而讓 1297638 前述毛邊的突出高度低於0. 03mm。 專利文獻1 :特開平4-368645號公報（請求項1、圖1、 圖2、圖3、圖4) 專利文獻2 :特開2000-218657號公報（請求項1、圖1、 圖14) 【發明内容】 一、 所欲解決之技術問題： 但上述專利文獻1上的固定模具空腔形成面，其包括固定 鏡面板9與固定鏡面板外侧環11的不同構件，因此具有從前述 構件9、11間隙，而在成形時會從訊號面或讀取面呈直交，而 在垂直方向略為形成出突出的毛邊問題。此外，在前述專利文 獻2上’可動模具的空腔形成面包括，可動侧壓模器烈及可動 側壓模器外周固定環部25b側等，因此會因前述構件的間隙， 而在成形時沿著訊號面形成出水平方向的毛邊，離模時，前述 毛邊具有朝垂直方向捲縮，在垂直方向形成出毛邊的問題。而 且專利文獻1、專利文獻2，並未註明端面突起部Ua等尺寸， 當端面突起部11a的前端册呈銳鏡，在糊雜樹脂時會 因樹脂壓而形成出狄變形，發生固定鏡面板外侧環丨丨卡住的 問題；當端面突起部11a前端寬幅過大時，毛邊會低於訊號面 或讀取面而容祕斷喊gj突出的毛邊而引發觸感不佳的問題、 甚至有時會在光碟基板外周部發生氣泡的不良問題。 二、 解決問題之技術手段： 本發明的目的在於提供，*在辆基板讀取面上形成出呈 1297638 直交的垂直毛邊，且低於前述讀取面而不易折斷毛邊的光碟基 板成形模具及光碟基板成形模具的鏡面板；又，本發明的目的 還在於提供，降低因毛邊所造成的光碟觸感不佳的同時，可形 成出外周部不發生氣泡的光碟基板成形模具及光碟基板成形模 具的鏡面板；此外，其目的更在於提供，藉由前述模具所成形 與貼合的光碟。^1297638 IX. Description of the Invention: [Technical Field] The present invention is a mirror substrate for a disc substrate forming mold, a disc substrate forming mold, and a substrate mold when the optical disc substrate is recorded by a (four) ridge type recording material. The age of the disc. [Prior Art] When the cavity of the mold-fixing mold and the movable mold is formed, the outer circumference ring disposed in one of the mold and the movable mold can be disposed on the outer circumference ring. The mirror panel of either one of the fixed mold and the movable mold can be secreted to the position of the optical disk, and the optical disk substrate forming mold can be disposed on the cavity volume. The substrate forming mold is bribed, and a problem of burrs occurs between the outer ring of the square mold and the mirror panel that can be moved toward the relative position of the outer peripheral ring at the time of molding. Further, the aforementioned burrs also have a problem in that the signal surface of the optical disk substrate or the reading surface facing the signal is orthogonal and protrudes in the vertical direction. Various problems occur. In other words, when the burr is broken and adhered to the signal surface, it becomes a defective product, or even if the burr is not broken, the touch is not good, causing problems in subsequent engineering processing. In order to solve this problem, in the patent literature, the special offer 2 is to have a record of ugliness. These patent documents are on the outer circumference of the f-fixed mirror panel 9, or the support member 22, and the outer ring of the fixing member mirror panel is provided, and the movable side mold outer peripheral fixing ring portion is moved. = Even if a large burr is formed between the k-member member 25b and the outer peripheral ring 13, it is considered that the height of the burr is lower than the signal surface or the reading surface. The __R of the burr is less than 0. 03mm. Patent Document 1: Japanese Laid-Open Patent Publication No. Hei-4-368645 (Claim No. 1, FIG. 1, FIG. 2, FIG. 3, FIG. 4) Patent Document 2: JP-A-2000-218657 (Request No. 1, FIG. 1, FIG. 14) SUMMARY OF THE INVENTION 1. Technical Problem to be Solved: However, the fixed mold cavity forming surface of the above Patent Document 1 includes different members of the fixed mirror panel 9 and the fixed mirror panel outer ring 11, and thus has the member 9 from the foregoing member 9. 11 gaps, which are straight from the signal surface or the reading surface during forming, and slightly protruded in the vertical direction. Further, in the above-mentioned Patent Document 2, the cavity forming surface of the movable mold includes the movable side die presser and the movable side die press outer peripheral fixing ring portion 25b side, etc., and thus, due to the gap of the aforementioned member, at the time of forming A horizontal burr is formed along the signal surface, and when the mold is released, the burr has a problem of being curled in the vertical direction and forming a burr in the vertical direction. Further, in Patent Document 1 and Patent Document 2, the size of the end projection Ua is not indicated, and the front end of the end projection 11a is a sharp mirror, and when the resin is pasted, a deformation is formed due to the resin pressure, and a fixed mirror panel is generated. The problem that the outer ring is stuck; when the front end of the end projection 11a is too large, the burr will be lower than the signal surface or the reading surface, and the burr protruding from the gj will be secreted, causing a problem of poor touch, or even A problem of air bubbles may occur at the outer peripheral portion of the optical disk substrate. Second, the technical means to solve the problem: The object of the present invention is to provide * on the substrate reading surface to form a vertical burr of 1297638 orthogonal, and lower than the reading surface is not easy to break the burr of the optical disc substrate forming mold and optical disc The mirror panel of the substrate forming mold; and the object of the present invention is to provide a disc substrate forming mold and a disc substrate forming mold which can form an outer peripheral portion without generating bubbles while reducing the tactile sensation of the disc due to the burrs. The mirror panel; furthermore, the object is to provide a disc that is formed and bonded by the aforementioned mold. ^
本發明如請求項1所記載的光碟基板成形模具，其特徵在 於，形成合模的固定模具與可動模具的空腔之際，對於配設於 前述固定模具及可動模具之任一方模具的外周環而言，配設於 固疋模具及可麵具之任-方賴面板可她触置移動的同 時’其鏡面板包括嵌合於外周環内的外周嵌合部、及在空腔形 成面的外周部具有，與朝向該空腔形成面呈一體的外周側，形 成出擁有自空腔形成面突出的環狀突起部。 本發明如請求項2所記載的光碟基板成形模具的鏡面板， 其特徵在於，形成合模的固定模具與可動模具的空腔之際，針 對配設於©定模具及可動模具之任—方模具的外周環而^，在 固定模具與可賴具雜—核設了可她紐置，其包括嵌 合於外周環⑽外周嵌合部、及在空腔形成面料周部則具 有’與朝向該^猶彡成©呈-體的外删，形成&自空腔形 面突出的環狀突起部。 ^ 本發明如請求項3所記載的光碟，其特徵在於，藉由相同 於或不·項1的辆基域賴具，成形出^片航 貼合訊號面的光碟餘，在讀取面賴部具有_4朝向外周 1297638 侧的薄形成部分。 三、對照先前技術之功效： 本發明的光碟基板成形模具及其鏡面板，在形成合模的 固定模具與可動模具的空腔之際，對於配設於固定模具及可 動模具之任一方模具的外周環而言，配設於固定模具及可動 模具之任一方的鏡面板可朝相對位置移動的光碟基板成形模 具上，在鏡面板是形成出嵌合於前述外周環内的外周嵌合 部、及在空腔形成面的外周部具有，與朝向該空腔形成面呈 一體的外周侧，形成出自空腔形成面突出的環狀突起部，因 此具有不在讀取面上形成出朝直交垂直方向突出毛邊的優 點。 【實施方式】 參閱圖1至圖4以說明本發明的實施形態。圖丨是本實 施形態的光碟基域形模具剖面圖。圖2是本實郷態光碟 基板成形模具的樞麵放大剖面圖。圖3是本實施形態光碟 的樞轴部放大剖Φ圖。圖4是依據本實施雜光碟基板成形 模具所成胸m的結果。此外，s 5是其他實施形態上的光 碟基板成形模具樞轴部放大剖面圖。 光碟基板成形模具1Q，其包括安裝於位在圖卜圖2左 4J仁未;^示於圖式上的射出成形機可動盤的可動模具Η、 及位於右侧但未標轉圖式上_定盤的峡模具3ΐ。可動 模具11與固賴具31，會在合模咖互動而形成出可變容積 的空腔ci。而且前輕腔G1是藉由未標示在圖式的射出成形 1297638 機射出裝置，射丨填充溶融細旨經壓縮成形，以形成光碟基 板Ml 〇 依據圖1、圖2說明可動模具u後可得知，可動模具n 具備了在可動盤上藉助安裝板而安裝的模具主體部12、及安 裝於模具主體部12的底板13。而且在底板13前面，是用螺 栓固定鏡面板14。底板13及鏡面板;[4各為擁有中心開口的 所疋板厚的圓娜構件，鏡面板14卿成出冷卻溝。鏡面板 14的前面有安裝複印成形光碟基板m訊號面41的壓模器 15。 在刚述底板13與鏡面板14中心開口上則配設頂針套筒 16、 支撑壓模器15内周緣部的内周壓模器支座17。鏡面板 14的外周部，則固定配設了在空腔C1形成出光碟基板[外 周面45且兼具外周壓模器支座的外周環18。 如圖2所示，本實施形態的外周環18是具備壓模器固定 部19與内周部20的環狀構件。壓模器固定部19屬於設置於 外周環18的反固定模具側的環狀面，用以支撐防止接觸壓模 器15外周緣部表面、或壓模器15外周緣部的浮起。内周部 2〇是朝向固定模具31侧延長，有一部份是對壓模器15表面 呈直交的方向，而在角度A的空腔ci外周侧呈傾斜，以形成 出朝向固定模具侧擴徑的第1斜度面21。以第丨斜度面21 的角度A而言，在後述固定模具31鏡面板34的外周嵌合部 38上，能將可動模具11外周環π嵌合於相對移動位置時， 會擴大不發生卡住的範圍，且設定為壓縮溶融樹脂時會縮小 溶融樹脂不易浸入間隔B的範圍値3。。再者，此角度a最好 1297638 疋2乃至8。第1斜度面21在合模時兼具著固定模具31鏡 面板34的外周嵌合部38、及隔著〇. 005〜0. 01mm _ B呈對 . ，:嵌合面、及形成出如圖3所示光碟基板M1外周面45的 . 空腔形成面。而且前秘合_空腔形成面之_邊界，在 魏成科’會因賴環18與鏡面板34歲合_對位置而 起變化再者’刚述第！斜度面21嵌合面與固定模具&鏡 面板34上外周嵌合部38的任一方或雙方也可形成出段狀。 • *此外，圖2說明所示’連接外周環18第1斜度面21的 壓模器15侧上’卿成出往壓模器15侧空腔^内侧突出的 外周環狀突出部22。外周環狀突出部22除了設有固定壓模器 -部份的固定面22a、略為接觸壓模器i5表面的突端部22bB、 及朝該突端部22b擴徑的第2斜度面22c之外，前述第2斜 度面22c還藉由内周部2〇帛！斜度面21所定曲率半徑的弧 曲面22d以順暢連接。再者，如圖2所示的第i斜度面21位 置E上’當空腔C1完成壓縮時’則為空腔C1最外周的位置， • 空腔C1的直徑被規定為光碟基板Ml外徑尺寸騰0.3mm，並 將溶融樹脂冷卻時的收縮部分設定為預估尺寸。接下來，光 雜板Ml K要是屬於DVD用’那麼光碟基板M1的厚度就為 〇· 6mm ’空腔C1的厚度也是在〇· 6mm，將溶融樹脂冷卻時的收 • 縮部分設定為預估尺寸。 . 此外，外周環狀突出部22突端部22b、與前述第！斜度 面21位置E之間的壓模器15表面方向距離的突出高度F為 最大値時，會在訊號面41上形成出訊號凹洞，而成為規格上 Ϊ297638 .最外周練度位置，且即使是最顿，也可蚊有效發揮效 果，範圍。外周環狀突出部22數値，分別為突端部22b角度 疋30 60 ’刖述突出南度ρ是〇. 2〜。此外，前述弧 曲面22d曲率半僅最好在〇. 1〜〇. &咖^範圍。再者，外周環狀 突出部22在本發明上並不是必須物。 以下將藉由圖1、圖2說明固定模具31，固定模具31具 備了女裝於固疋盤的模具主體部32、安裝於模具主體部32 的底板33。在可動模具11對置面的前述底板33正面，是用 螺栓安裝鏡面板34。底板33及鏡面板34各有中心開口所定 板厚的醜狀構件’在鏡面板34上卿成出冷卻^前述底 板33與鏡面板34的中心開口上，則配設了中央抽套35或洗 口套36等。此外，鏡面板34表面（可動模具對置面）未配 設壓模機’而形成出光碟基板M1讀取面42的空腔形成面耵。 再者，在鏡面板34外周上形成合模空腔時，可動模具I〗的 外周％ 18之間，則形成出封止溶融樹脂的外周嵌合部昶嵌 σ面。外周嵌合部38的嵌合面，則同於外周環Μ第1斜度 面21 —樣，呈現出朝向固定盤侧擴徑的斜度面。 又 本實施形態上的鏡面板34的空腔形成面37的外周部 上，則如圖2所示’雜突起部39與空腔形成面37的平面 部37a呈一體。環狀突起部39是由屬於外職合部38 一部 份的嵌合面39a ’及具有所定寬幅ί的頂部平坦面3此、及朝 向外周端而從空腔形成面37的平面部37a突出的所定曲率半 徑的弧曲面39c所形成，前述弧曲面39c則連接空腔形成面 ⑧ 11 1297638 •37的平面部37a。 再者，本發明的環狀突起部39頂部平坦面39b寬幅I最 好是0· 03mm至0· 〇8mm，環狀突起部39的突出高度H最好是 〇· 05mm 至 〇· 3mm ’ 但 〇· l〇mm 至 〇· 20mm 更佳。 其理由為，猶如變更環狀突起部39尺寸的圖4成形測試 結果所示，環狀突起部39的頂部寬幅I大於〇 〇8mm後，會 因使用的樹脂而在圖3所示光碟基板Ml外周部43上發生氣 泡。此外，環狀突起部39的突出高度η高於〇· 3〇刪時，會 在外周部43上發生氣泡而變成不良品。此外，頂部平坦面3此 寬幅I厚度低於〇· 〇3mm後，會因射出填充時的溶融樹脂壓 力，而讓環狀突起部39頂部附近朝外側彎曲，而可能在環狀 突起部39嵌合面39a、及外周環18第1斜度面21之間發生 卡住的問題。再者，環狀突起部39的頂部，也可以是非平坦 面、而是順暢突出的R面。 此外，前述環狀突起部39的突出高度Η的最佳尺寸的理 由在於，環狀突起部39的突出高度Η低於〇·〇5麵後，會在 讀取面42附近形成毛邊46而容易折斷。此外，環狀突起部 39的突出高度Η高於〇· 3mm時，除了會發生磁碟基板M1離模 不良之外，從一片不銹鋼材中加工鏡面板34時，必須留下環 狀突起部39而延長研削加工及精整加工空腔形成面37平面 部37a的時間。前述弯曲面39c的曲率半徑最好是〇 3mm乃 至0· 6mm，其結果為環狀突起部39的基部寬幅j則呈〇. 33mm 乃至0· 68刪。此外，環狀突起部39的彎曲面39c，也可與恆The optical disk substrate forming mold according to the first aspect of the invention, characterized in that, in the case of forming a mold for fixing the mold and the cavity of the movable mold, the outer peripheral ring of one of the fixed mold and the movable mold is disposed. In terms of the solid mold and the mask, the square panel can be moved while the user touches the movement, and the mirror panel includes a peripheral fitting portion fitted in the outer peripheral ring and a cavity forming surface. The outer peripheral portion has an annular projection portion having a projection projecting from the cavity forming surface, on the outer peripheral side integral with the cavity forming surface. The mirror panel of the optical disk substrate forming mold according to the second aspect of the present invention is characterized in that, in the case of forming a mold for fixing the mold and the cavity of the movable mold, the method is arranged for any of the fixed mold and the movable mold. The outer circumference of the mold is provided, and the fixed mold and the disposable mold are provided with a core, which includes fitting to the outer peripheral fitting portion of the outer peripheral ring (10), and having a 'and orientation toward the periphery of the cavity forming the fabric. The 彡 彡 © © © 呈 呈 呈 呈 呈 呈 呈 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The optical disc according to claim 3, wherein the optical disc of the airfoil surface is formed by the vehicle base device of the same or not item 1. The portion has a thin forming portion of _4 toward the side of the outer circumference 1297638. 3. Controlling the effects of the prior art: The optical disk substrate forming mold and the mirror panel thereof of the present invention are disposed on either one of the fixed mold and the movable mold when the mold is fixed and the cavity of the movable mold is formed. In the outer peripheral ring, the mirror panel disposed on either of the fixed mold and the movable mold is movable toward the relative position of the optical disk substrate forming mold, and the mirror panel is formed with an outer peripheral fitting portion that is fitted into the outer peripheral ring. And an outer peripheral portion of the cavity forming surface, and an outer peripheral side that is integral with the cavity forming surface, and an annular protruding portion that protrudes from the cavity forming surface is formed, and thus has a direction that is not perpendicular to the reading surface. Highlight the advantages of burrs. [Embodiment] An embodiment of the present invention will be described with reference to Figs. 1 to 4 . Figure 丨 is a cross-sectional view of the optical disk base-shaped mold of the embodiment. Fig. 2 is a cross-sectional enlarged cross-sectional view showing the molding die of the optical disk substrate of the present invention. Fig. 3 is an enlarged cross-sectional view showing the pivot portion of the optical disk of the embodiment. Fig. 4 is a view showing the results of the chest m formed by the mold of the mat according to the present embodiment. Further, s 5 is an enlarged cross-sectional view of the pivot portion of the optical disk substrate forming mold in the other embodiment. The optical disc substrate forming mold 1Q includes a movable mold 安装 which is mounted on the left side of the drawing and is disposed on the left side of the drawing, and is located on the right side but not on the right side. The dam mold of the plate is 3 ΐ. The movable mold 11 and the fixed mold 31 interact with the mold clamping coffee to form a cavity ci of variable volume. Moreover, the front light chamber G1 is formed by an injection molding apparatus of the injection molding 1297638 which is not shown in the drawings, and the shot filling and melting is compressed and formed to form the optical disk substrate M1. The movable mold u can be obtained according to FIG. 1 and FIG. It is to be understood that the movable mold n includes a mold main body portion 12 that is attached to the movable plate by a mounting plate, and a bottom plate 13 that is attached to the mold main body portion 12. Further, in front of the bottom plate 13, the mirror panel 14 is fixed by bolts. The bottom plate 13 and the mirror panel; [4 each is a round member with a central opening and a thick plate, and the mirror panel 14 is formed into a cooling groove. On the front surface of the mirror panel 14, there is mounted a stamper 15 for copying and forming the optical disk substrate m signal surface 41. An ejector sleeve 16 and an inner peripheral die holder holder 17 for supporting the inner peripheral edge portion of the die press 15 are disposed on the center opening of the bottom plate 13 and the mirror panel 14, respectively. The outer peripheral portion of the mirror panel 14 is fixedly provided with an outer peripheral ring 18 in which a disc substrate [outer peripheral surface 45 is formed in the cavity C1 and has an outer peripheral die holder. As shown in Fig. 2, the outer peripheral ring 18 of the present embodiment is an annular member including a die presser fixing portion 19 and an inner peripheral portion 20. The stamper fixing portion 19 belongs to an annular surface provided on the opposite fixed mold side of the outer peripheral ring 18 for supporting the floating of the outer peripheral edge portion of the presser 15 or the outer peripheral portion of the stamper 15. The inner peripheral portion 2A is extended toward the side of the fixed mold 31, and has a portion which is orthogonal to the surface of the stamper 15, and is inclined at the outer peripheral side of the cavity ci at the angle A to form an expanded diameter toward the fixed mold side. The first sloped surface 21. In the outer peripheral fitting portion 38 of the mirror plate 34 of the fixed mold 31, which will be described later, the outer peripheral ring π of the movable mold 11 can be fitted to the relative movement position, and the card is not enlarged. When the range of residence is set and the compression of the molten resin is set, the range in which the molten resin is less likely to enter the interval B is reduced. . Furthermore, this angle a is preferably 1297638 疋 2 or even 8. The first inclined surface 21 has both the outer peripheral fitting portion 38 of the fixed mold 31 and the mirror panel 34 at the time of mold clamping, and is formed by 〇. 005~0. 01mm _ B. The cavity forming surface of the outer peripheral surface 45 of the optical disk substrate M1 is as shown in FIG. And the front secret _ the boundary of the cavity forming surface, in Wei Chengke's because of the Lai ring 18 and the mirror panel 34 years old _ the position changes and then again ‘just said the first! One or both of the fitting surface of the sloped surface 21 and the outer peripheral fitting portion 38 of the fixed mold & mirror panel 34 may be formed in a segment shape. In addition, Fig. 2 illustrates the outer peripheral annular projecting portion 22 which is shown on the side of the stamper 15 which connects the first inclined surface 21 of the outer peripheral ring 18 to the inner side of the cavity 15 of the die press 15 side. The outer peripheral annular projecting portion 22 is provided with a fixing surface 22a for fixing the stamper-part, a protruding end portion 22bB slightly contacting the surface of the stamper i5, and a second inclined surface 22c which is expanded toward the protruding end portion 22b. The second inclined surface 22c is also provided by the inner peripheral portion 2〇帛! The curved surface 22d of the radius of curvature of the sloped surface 21 is smoothly connected. Furthermore, the position of the i-th slope surface 21 shown in FIG. 2 is 'when the cavity C1 is compressed,' is the outermost circumference of the cavity C1, and the diameter of the cavity C1 is defined as the outer diameter of the optical disk substrate M1. The size was set to 0.3 mm, and the contracted portion when the molten resin was cooled was set to an estimated size. Next, if the optical plate M1 K belongs to the DVD, then the thickness of the optical disk substrate M1 is 〇·6 mm. The thickness of the cavity C1 is also 〇·6 mm, and the shrinkage and contraction portion when the molten resin is cooled is set as an estimation. size. Further, the outer peripheral annular projecting portion 22 projecting end portion 22b, and the aforementioned first! When the protruding height F of the surface direction distance between the inclined surface 21 of the stamper 15 is the maximum 値, a signal recess is formed on the signal surface 41, and becomes a specification upper Ϊ 297638. The outermost circumferential position, and Even if it is the best, mosquitoes can effectively exert their effects and range. The number of outer circumferential annular projections 22 is 値, which is the projection end 22b angle 疋 30 60 ′ 刖 突出 南 南 南 南 南 2. In addition, the curvature of the aforementioned arcuate surface 22d is preferably only half in the range of 〇. 1~〇. & Further, the outer peripheral annular projection 22 is not essential in the present invention. Hereinafter, the fixed mold 31 will be described with reference to Figs. 1 and 2, and the fixed mold 31 has a mold main body portion 32 which is attached to the mold main body portion 32 and a bottom plate 33 attached to the mold main body portion 32. On the front surface of the bottom plate 33 facing the movable mold 11, the mirror panel 34 is attached by bolts. The bottom plate 33 and the mirror panel 34 each have a ugly member of the thickness of the center opening. The cooling is performed on the mirror panel 34. The central opening of the bottom plate 33 and the mirror panel 34 is provided with a central pumping sleeve 35 or wash. Mouth cover 36 and so on. Further, the surface of the mirror panel 34 (opposing surface of the movable mold) is not provided with a molding machine', and a cavity forming surface 读取 of the reading surface 42 of the optical disk substrate M1 is formed. Further, when the mold cavity is formed on the outer circumference of the mirror panel 34, between the outer circumference % 18 of the movable mold I, the outer peripheral fitting portion of the sealing resin is formed to be embedded in the σ plane. The fitting surface of the outer peripheral fitting portion 38 has a sloped surface that expands toward the fixed disk side as in the outer peripheral ring first inclined surface 21. Further, in the outer peripheral portion of the cavity forming surface 37 of the mirror panel 34 of the present embodiment, the "protrusion portion 39" is integrated with the flat portion 37a of the cavity forming surface 37 as shown in Fig. 2 . The annular projection 39 is a fitting surface 39a' which is a part of the outer joint portion 38, and a flat portion 3a having a predetermined wide width, and a flat portion 37a which is formed from the cavity forming surface 37 toward the outer peripheral end. A curved curved surface 39c of a predetermined radius of curvature is formed, and the curved curved surface 39c is connected to the flat portion 37a of the cavity forming surface 8 11 1297638 37. Further, the width I of the top flat surface 39b of the annular projection 39 of the present invention is preferably 0·03 mm to 0·〇8 mm, and the protruding height H of the annular projection 39 is preferably 〇·05 mm to 〇·3 mm ' But 〇·l〇mm to 〇· 20mm is better. The reason for this is that, as shown in the molding test result of FIG. 4 in which the size of the annular projection 39 is changed, the top width I of the annular projection 39 is larger than 〇〇8 mm, and the optical disk substrate shown in FIG. 3 is used due to the resin used. Air bubbles occur on the outer peripheral portion 43 of M1. Further, when the projection height η of the annular projection portion 39 is higher than that of the 〇·3〇, bubbles are generated in the outer peripheral portion 43 and become defective. Further, after the thickness I of the top flat surface 3 is lower than 〇·〇3 mm, the pressure of the molten resin at the time of filling is injected, and the vicinity of the top of the annular projection 39 is bent outward, possibly in the annular projection 39. There is a problem that the fitting surface 39a and the outer peripheral ring 18 are stuck between the first inclined surfaces 21. Further, the top of the annular projection 39 may be a non-flat surface but a smooth R surface. Further, the reason why the optimum height of the protruding height Η of the annular projecting portion 39 is that the protruding height Η of the annular projecting portion 39 is lower than the 〇·〇5 surface, and the burr 46 is formed in the vicinity of the reading surface 42 and is easy. Broken. Further, when the projection height Η of the annular projection 39 is higher than 〇·3 mm, in addition to the mold release failure of the disk substrate M1, when the mirror panel 34 is processed from a piece of stainless steel, an annular projection must be left. 39, the time for grinding and finishing the cavity forming surface 37 of the cavity forming surface 37 is extended. The radius of curvature of the curved surface 39c is preferably 〇 3 mm or 0. 6 mm. As a result, the base width j of the annular projection 39 is 〇 33 mm or even 0.06. Further, the curved surface 39c of the annular projection 39 can also be constant
12 1297638 定擴徑的斜度面或斜度面與彎曲面進行組合。再者，包含鏡 面板34的環狀突起部39的整體空腔形成面37上，也可塗佈 • Tl n、DLC ' WCC、CrN等耐摩耗物質或進行電鍍，以防前述環 _ 狀突起部39發生摩耗，並可延長鏡面板34壽命。此外，前 述環狀突起部39在固定模具31的鏡面板34上最為突出，因 此可透過提高附著傷痕的硬度以防護環狀突起部39。再者， 也可只針對環狀突起部39進行前述耐磨耗塗佈等。 • 以下將說明本發明光碟基板Ml的成形方法、及貼合光碟 基板Ml所製造的光碟d的製法。未標示於圖式的射出成形機 可動盤會前進驅動，合模固定模具31與可動模具u而形成 出可改變容積的空腔C1，從未標示圖式的射出裝置中，透過 澆口套36對前述空腔C1供應溶融樹脂。接下來，會讓可動 模具11更加前進，以壓縮空腔C1内的溶融樹脂。再接下來 則進行空腔C1内的溶融樹脂冷卻固化，一旦經過所定時間後 便會開模可動模具11而取出光碟基板Ml。 • 如圖3所示，光碟基板Ml是藉由在光碟基板M1的訊號 面41 (包含匿影訊號面）上，將溶融樹脂注入壓模機15與外 周環18之間的間隙，而形成出長度〇·02刪、厚度〇〇1咖左 右的毛邊44。此外，光碟基板Ml外周面45，是藉由在環狀 • 突起部39嵌合面39a、及外周環18内周部2〇之間的間隙注 入溶融樹脂，以形成出突出高度〇· 〇2刪、厚度〇· 〇1咖左右的 毛邊46。此毛邊46高度會低於光碟基板M1的讀取面42。而 且，會因環狀突起部39弧曲面39C而形成出讀取面侧外周彎 13 1297638 .曲面47，雖齡因環狀突起部39的頂部平坦面娜，而形成 出前述讀取面侧外周彎曲面47與毛邊46之間的間隙部仙， 但本實施形態上的前述_部48寬幅丨僅有〇7麵，再加上 毛邊46厚度的尺相約為〇. Q8mm，@此本實施形態的光碟基 板祖’因外周部43主體部與毛邊46之間的間隔較為狹窄， 因此毛邊46比較不易折斷。再者，藉由在環狀突起部39基 部寬幅J上附加間隔B的尺寸，而讓規定的光碟基板虮讀取 面42外周部，朝向外周侧形成出較薄部分的寬幅κ，如前述 般的狹Ρ益’因此可讓毛邊46更料機。此外，+請人在成 形測试材料種_聚碳酸g旨細旨上，縮窄前賴隙部的結 果’並不會在® 4所示的光碟基板組的外周部妨發生氣泡。 已成形的辆基板Ml會被運往賴卫程，經過訊號面的 銘蒸鍍等工程後’藉由相同或不關具所成形的其他光碟基 板Ml，是藉由黏著劑49以彼此貼合訊號面41 (包含一方^ 匿影訊號面時），再製造出如圖3所示的勵等貼合磁碟卜 再者，貼合光碟基板Ml時，即使黏著劑49朝向外周部43流 動，也會因外周環18外周環狀突出部22，而讓光碟基板^ 的部分訊號面41外周厚度變薄，因此前述黏著劑佔不會從 外周面45滲出。此外，毛邊46的高度低於非複印面处，由 於在外周部43的主體部附近會形成前述毛邊46，即使觸摸貼 合光碟D的外周端的毛邊46,其觸感也不像傳統品來_ 再者，本實施形態是將壓模機15與外周環18配設於可動模 具11鏡面板14’以下將說明在固定模具31鏡面板料上設置 1297638 •環狀突起部39的設置例。但也可在固定模具鏡面板上配設壓 核機與外周％，以及在可動模具的鏡面板上設置環狀突起 部。另外，鏡面板上也可完全不配設壓模機。 以下將說明圖5所示的其他實施形態上的光碟基板成形 模具51。圖5實施例是在固定模具52鏡面板53上，配設形 成光碟基板M2訊號面的壓模機54，並於鏡面板53外周端配 设外周模組55。此外，在未標示可動模具56圖式的模具主體 部上所形成的光碟基板M2外周部的外周環57，可藉由未標示 圖式的彈簧，而綱模的關方向移動。接下來，鏡面板58 被嵌合於外周環57内，鏡面板58珊前述外周環57設置成 可在相對位置上進行移動。因此外周環57關部59與鏡面 板58外周嵌合部6〇，只隔著些許間隔而呈對置。接下來，前 述鏡面板㈣腔形成㈣的相部，是從該鎌形成面61 的平坦面61a連續一體形成出環狀突起部62。此外，外周環 57内周部59方面，則在壓模機54附近（固賴具52侧）形 =外騎狀突出部63。再者，環狀狄部62、及外周環狀 2部63尺寸與形狀等，_條圖丨等所示的實施形態故 雀略說明。 圖5所示的光碟基板成形模具51則設定為，當前述可動 周二f外周環57 ’接觸固定模具52外周模組55時，前述外 =7無模機54的間隔為不灌碌融樹脂_隔，以形 空=改變容積的空腔…接下來，將溶融獅射出填充於 後，可賴具56隨著朝向固定模具52移動，而收縮 1297638 外周環57與模具主體部之間轉簧結果，讓外周環57與鏡 面板58移動相對位置，而壓縮空腔C2内的溶融樹脂。再者， 形成毛邊的地方與毛邊尺寸等方面，因略同於圖丨等所示的 實施形態而省略說明。再者，在圖5所示實施例，也可在可 動模具上安裝壓模機，將外周突起部所形成的鏡面板與外周 環設置於固定模具，亦可不將壓模機設置於兩侧模具上。 此外’雖未 列舉本發明，但並未侷限於上述本發明實 施形態’亦可適用於熟悉該項技術者依據本發明主旨所施加的 變更；本實施形態雖有記載DVD，但無論可否寫入，皆能適用 於CD、Blu-ray Disc光碟等其他光碟基板的成形。 a^7638 【圖式說明】 ϊ ί iin,形s的光碟基板成形模具剖面圖。 面圖。么月實施形態的光碟基板成形模具樞軸部放大剖 _ j本發明實施形態的光碟樞軸部放大剖面圖。 剛試H據本發明實施形態的光碟基板成形模具進行成形 放大發明其他實施形態上的光碟基板成形模具樞軸部 【主要元件符號說明】12 1297638 The slope or slope of the fixed diameter is combined with the curved surface. Further, the entire cavity forming surface 37 including the annular projection 39 of the mirror panel 34 may be coated with a wear-resistant substance such as Tl n, DLC 'WCC, CrN or electroplated to prevent the aforementioned ring-like protrusions. The portion 39 is worn out and the life of the mirror panel 34 can be extended. Further, the above-mentioned annular projecting portion 39 is most protruded on the mirror panel 34 of the fixed mold 31, so that the rigidity of the adhesion flaw can be improved to protect the annular projecting portion 39. Further, the above-described wear-resistant coating or the like may be performed only for the annular projecting portion 39. The method of forming the optical disk substrate M1 of the present invention and the method of manufacturing the optical disk d produced by bonding the optical disk substrate M1 will be described below. The movable forming disc of the injection molding machine, which is not shown in the drawings, is driven forward, and the mold 31 and the movable mold u are clamped to form a cavity C1 of a changeable volume, and the sprue sleeve 36 is passed through the unillustrated injection device. The molten resin is supplied to the aforementioned cavity C1. Next, the movable mold 11 is further advanced to compress the molten resin in the cavity C1. Further, the molten resin in the cavity C1 is cooled and solidified, and once the predetermined time has elapsed, the movable mold 11 is opened and the optical disk substrate M1 is taken out. As shown in FIG. 3, the optical disk substrate M1 is formed by injecting molten resin into the gap between the molding machine 15 and the outer peripheral ring 18 on the signal surface 41 (including the shadow signal surface) of the optical disk substrate M1. The length 〇·02 is deleted, and the thickness is 〇〇1 or so. Further, the outer peripheral surface 45 of the optical disk substrate M1 is filled with a molten resin at a gap between the ring-shaped projection portion 39 fitting surface 39a and the inner peripheral portion 2 of the outer peripheral ring 18 to form a projection height 〇·〇2 Delete, thickness 〇 · 毛 1 coffee around the burr 46. The height of the burr 46 is lower than the reading surface 42 of the optical disk substrate M1. Further, the outer surface curve 13 1297638 of the reading surface side is formed by the curved surface 39C of the annular projection portion 39. The curved surface 47 is formed on the outer side of the reading surface side due to the flat top surface of the annular projection portion 39. The gap between the curved surface 47 and the burr 46 is not limited. However, the width of the _ portion 48 in the present embodiment is only 〇7, and the thickness of the burr 46 is about 〇. Q8mm, @本本实施In the form of the optical disk substrate ancestor, since the interval between the main body portion and the burr 46 of the outer peripheral portion 43 is narrow, the burr 46 is less likely to be broken. Further, by adding the size of the space B to the base width J of the annular projection portion 39, the outer peripheral portion of the predetermined optical disk substrate 虮 reading surface 42 is formed to have a wide width κ toward the outer peripheral side, such as The aforementioned narrow benefits can therefore make the raw edge 46 more material. In addition, in the case of the molded test material type _ polycarbonate, the result of narrowing the front gap portion is not caused by air bubbles in the outer peripheral portion of the optical disk substrate group shown in the paragraph 4. The formed substrate M1 will be transported to Lai Weicheng, and after the evaporation of the signal surface, etc., the other optical disk substrates M1 formed by the same or not being closed are attached to each other by the adhesive 49. (When one side is included in the shadow signal surface), the magnetic disk or the like as shown in FIG. 3 is produced, and when the optical disk substrate M1 is bonded, even if the adhesive 49 flows toward the outer peripheral portion 43, Since the outer peripheral ring 18 has the outer peripheral annular projecting portion 22 and the outer peripheral thickness of the partial signal surface 41 of the optical disk substrate 2 is thinned, the adhesive does not ooze out from the outer peripheral surface 45. Further, the height of the burr 46 is lower than that of the non-copying surface, and since the burr 46 is formed in the vicinity of the main body portion of the outer peripheral portion 43, even if the burr 46 of the outer peripheral end of the bonded disc D is touched, the touch is not like the conventional one. In the present embodiment, the molding machine 15 and the outer peripheral ring 18 are disposed on the movable mold 11 mirror panel 14'. Hereinafter, an example in which the 1297638 or the annular projection 39 is provided on the mirror material of the fixed mold 31 will be described. However, it is also possible to provide a press machine and a peripheral % on the fixed mold mirror panel, and an annular projection on the mirror panel of the movable mold. In addition, the molding machine can be completely unfitted on the mirror panel. The optical disk substrate forming mold 51 according to another embodiment shown in Fig. 5 will be described below. In the embodiment of Fig. 5, a stamper 54 for forming a signal surface of the optical disc substrate M2 is disposed on the mirror panel 53 of the fixed mold 52, and an outer peripheral module 55 is disposed at the outer peripheral end of the mirror panel 53. Further, the outer peripheral ring 57 of the outer peripheral portion of the optical disk substrate M2 formed on the mold main body portion not shown in the figure of the movable mold 56 can be moved in the closing direction of the mode by the spring of the unillustrated pattern. Next, the mirror panel 58 is fitted into the outer peripheral ring 57, and the outer peripheral ring 57 of the mirror panel 58 is disposed to be movable in a relative position. Therefore, the closed portion 59 of the outer peripheral ring 57 and the outer peripheral fitting portion 6 of the mirror plate 58 are opposed to each other with only a slight interval therebetween. Next, the phase portion of the cavity (4) of the mirror panel is formed by continuously forming the annular projection 62 integrally from the flat surface 61a of the crucible forming surface 61. Further, the inner peripheral portion 59 of the outer peripheral ring 57 is formed in the vicinity of the molding machine 54 (on the side of the fixing member 52) = the outer riding portion 63. Further, the size and shape of the annular portion 62 and the outer annular portion 63, and the like, and the embodiment shown in Fig. 3 are omitted. The optical disk substrate forming mold 51 shown in FIG. 5 is set such that when the outer peripheral ring 57' of the movable Tuesday f contacts the outer peripheral module 55 of the fixed mold 52, the interval of the outer=7 no-mold 54 is not filled with molten resin_ Separate, with the shape of the space = cavity to change the volume... Next, after the molten lion is injected and filled, the detachable member 56 moves toward the fixed mold 52, and shrinks the result of the spring between the outer peripheral ring 57 and the main body portion of the mold. The peripheral ring 57 is moved relative to the mirror panel 58 to compress the molten resin in the cavity C2. In addition, the place where the burrs are formed, the size of the burrs, and the like are omitted from the embodiment shown in the drawings and the like, and the description thereof is omitted. Furthermore, in the embodiment shown in FIG. 5, a molding machine may be attached to the movable mold, and the mirror panel and the outer peripheral ring formed by the outer peripheral protrusions may be disposed in the fixed mold, or the molding machine may not be disposed on both sides of the mold. on. Further, 'the invention is not limited to the above, but is not limited to the above-described embodiment of the present invention'. It is also applicable to changes that are applied to those skilled in the art in accordance with the gist of the present invention. Although the DVD is described in this embodiment, it can be written regardless of whether or not it can be written. It can be applied to the formation of other optical disc substrates such as CDs and Blu-ray Disc discs. A^7638 [Description of the drawings] ϊ ί iin, a sectional view of the forming substrate of the optical disk substrate. Surface map. The optical disk substrate molding die pivot portion of the embodiment of the present invention is an enlarged cross-sectional view of the optical disk pivot portion according to the embodiment of the present invention. The optical disk substrate molding die according to the embodiment of the present invention is molded. The pivoting portion of the optical disk substrate molding die according to another embodiment of the present invention is enlarged.
10、51 光碟基板成形模具 η、56 可動模具 12、32 模具主體部 13、33 底板 14、34、53、58 鏡面板 15 壓模器 18、57 外周環 19 壓模機固定部 20、59 内周部 21 第1斜度面 22 外周環狀突出部 22a 固定面 22b 突端部 22c 第2斜度面 22d、39c 弧曲面 3卜52 固定模具 17 129763810, 51 Optical disc substrate forming molds η, 56 Movable molds 12, 32 Mold main body portions 13, 33 Bottom plates 14, 34, 53, 58 Mirror plate 15 Molds 18, 57 Peripheral ring 19 Molding machine fixing portions 20, 59 Peripheral portion 21 First inclined surface 22 Peripheral annular projection 22a Fixed surface 22b Projection end 22c Second sloped surface 22d, 39c Curved surface 3 Bu 52 Fixed mold 17 1297638
37、61 空腔形成面 37a、61a 平面部 38、60 外周嵌合部 39、62 環狀突起部 39a 嵌合面 39b 頂部平坦面 41 訊號面 42 讀取面 43 外周部 44、46 毛邊 45 外周面 47 讀取面側外周彎曲面 48 間隙部 49 黏著劑 A、G 角度 B 間隔 a、C2 空腔 D 光碟 E 位置 F、H 突出高度 I、J、K 寬幅 Ml、M2 光碟基板37, 61 cavity forming surface 37a, 61a plane portion 38, 60 outer peripheral fitting portion 39, 62 annular projection portion 39a fitting surface 39b top flat surface 41 signal surface 42 reading surface 43 outer peripheral portion 44, 46 burr 45 outer circumference Face 47 Reading surface side peripheral curved surface 48 Gap portion 49 Adhesive A, G Angle B Interval a, C2 Cavity D Disc E Position F, H Projection height I, J, K Wide Ml, M2 Disc substrate