200828303 九、發明說明： 【發明所屬之技術領域】 特別是指一種 本發明是有關於一種模具及其定位件 碟片成型模具及其母片定位件。 【先前技術】 參閱圖卜2’-般用於成型光碟片的碟片成型模具包 3 .上下對應之-活動模n與一固定模12、_設置在該活200828303 IX. Description of the invention: [Technical field to which the invention pertains] In particular, the invention relates to a mold and a positioning member disc forming mold and a master positioning member thereof. [Prior Art] Referring to Figure 2', a disc forming mold package for forming an optical disc is used. 3. The upper and lower corresponding-moving mold n and a fixed mold 12, _ are set in the living
動模11底面的上模仁板13、一設 口又π孩上杈仁板13周緣之 圍壁14、一設置於該固定模12頂面的模仁15、一由該上 模仁板13、模仁15及圍壁14共同界定出的模穴16、二穿 設在該模仁15與該固定模12中的母片定位件17，以及一 :置在該母片定位件17中的襯套19,該襯# 19具有一與 模穴16連通的通道191。 所述模卩15是可供-個預刻有資訊坑而形成資訊面之 母片18來設置，並包括一個由金屬材質製成之模板Η】， 以及一披覆在該模板151上的硬質層152。該硬質層152是 由硬度高之材質（如DLC、wc/c、CrN、TiN、硬鉻等材質 )製成’故其表面呈光滑而具低摩擦係數。 «亥母片疋位件17主要是由鋼材製成，所述鋼材是jig SUS420系列的鋼材或是STAVAC系列的鋼材，並包括一個 本體171，該本體171包括一個位於模仁15與固定模12中 的安裝部173，以及一個自該安裝部173頂緣徑向朝外延伸 出的定位部174，該定位部174是位於該母片ls之一内環 部181的頂緣。為了避免定位部174與母片18直接接觸而 5 200828303 壓壞該母片18，所述定位部174與母片〗8之内環部i8i是 存在一個約l〇/zm的公差間距，亦即，該定位部174並= 直接緊㈣塵母片18，而是歸限制母片18上下移動的空 間以達到定位效果。 工 在射出成型光碟片時，先使熱塑性材質（p0】y Carbonate，簡稱PC)溶融呈液狀射出填充入該模穴μ，經 瞬間流動而以預定厚度均勾填覆料母片18頂面，待冷ς 成固體後即形成一光碟片成品，該光碟片底面即對應^片 18頂面而形成有預印圖案的資訊面。 由於炼融態的熱塑性液體流入該模a 16後，會產生推 移該母片18的力量，且液體的高溫會使母片18_冷缩 ，這些作用都造成母片18會相對該模仁15移動而盘奸 間產生摩擦’進而使母片18與模仁15容易損耗，因此 ’習知常用的作法，是蕤忐太兮以 疋糟由在該核仁15之模板151表面鍍 上該表面光滑而具低摩擦係數之硬質層152’以解決模仁 15頂面與母片18間的摩耗問題。 然而’業者發現，該模仁15上已鍍有該硬質層152， 理應可以減少模仁15與母片18間的摩擦現象，但是每次 射出成3L光碟片之後’仔細觀察母片Μ底面的摩耗 可以發現㈣普遍存在著異f的刮痕，而母片18内料 181及其附近部位亦出現異常摩耗之痕跡，再觀察母片定位 件17的安裝部173頂緣及定位部⑺，亦有明顯摩耗現象（The upper mold plate 13 on the bottom surface of the movable mold 11, a peripheral wall 14 which is provided with a peripheral edge of the upper edge of the top plate 13, a mold core 15 disposed on the top surface of the fixed mold 12, and a top plate 13 a mold hole 16 defined by the mold core 15 and the surrounding wall 14 , a mother positioning member 17 disposed in the mold core 15 and the fixed mold 12 , and a first: disposed in the mother sheet positioning member 17 A bushing 19 having a passage 191 in communication with the cavity 16 is provided. The die 15 is provided for a master piece 18 which is pre-engraved with information pits to form an information surface, and includes a template made of a metal material, and a hard layer coated on the template 151. Layer 152. The hard layer 152 is made of a material having a high hardness (e.g., DLC, wc/c, CrN, TiN, hard chrome, etc.) so that the surface is smooth and has a low coefficient of friction. «Hai master piece 17 is mainly made of steel, which is jig SUS420 series steel or STAVAC series steel, and includes a body 171 including a mold 15 and a fixed mold 12 The mounting portion 173 and a positioning portion 174 extending radially outward from the top edge of the mounting portion 173 are located at a top edge of the inner ring portion 181 of the one of the mother sheets ls. In order to prevent the positioning portion 174 from directly contacting the mother sheet 18 and the 2008 28303 crushing the mother sheet 18, the positioning portion 174 and the inner ring portion i8i of the master sheet 8 have a tolerance interval of about 1 〇 / zm, that is, The positioning portion 174 does not directly close the (four) dust master sheet 18, but is a space that restricts the upward movement of the mother sheet 18 to achieve a positioning effect. When the molded optical disc is shot, the thermoplastic material (p0) y Carbonate (PC) is first melted and filled into the cavity μ by liquid injection, and the top surface of the covering mother 18 is hooked at a predetermined thickness by instantaneous flow. After being cooled into a solid, a finished optical disc is formed, and the bottom surface of the optical disc is corresponding to the top surface of the optical sheet 18 to form a pre-printed information surface. Since the molten state of the thermoplastic liquid flows into the mold a 16 , the force of the mother sheet 18 is displaced, and the high temperature of the liquid causes the mother sheet 18 to shrink. These effects cause the mother sheet 18 to be opposed to the mold core 15 . Moving and creating friction between the discriminating ones, and thus the mother sheet 18 and the mold core 15 are easily worn out, so it is conventionally practiced that the surface is plated on the surface of the template 151 of the core 15 by the sputum. The smooth, low coefficient of friction hard layer 152' solves the problem of wear between the top surface of the mold core 15 and the mother sheet 18. However, the manufacturer has found that the hard layer 152 has been plated on the mold core 15, which is supposed to reduce the friction between the mold core 15 and the mother sheet 18, but after each shot into a 3L optical disc, carefully observe the bottom surface of the mother sheet. The friction can be found (4) the scratches of the common f are common, and the material 181 and its vicinity of the mother piece 18 also have abnormal wear marks, and then the top edge of the mounting portion 173 of the mother piece positioning member 17 and the positioning portion (7) are also observed. There is obvious wear and tear (
如圖2假想線所示）。 乎和巩豕I 般而言，一片母片18可 以供成型出30萬片光碟片 6 200828303 ，但是由於上述到痕及摩_題的存在，每成型出$ 左右的光碟片後’就必需定取出母片18加以拋光保養，造 成製程上的賴。而且該母片18往往在還無法達到預定之 先碟片成型數量時，母片18就會因過度損壞而不敷使用。 ^外，母K位件17與母片18間有摩擦現象，亦會加速 —定位件17的淘汰率’進而使生產成本提高。更進— 纟更換或維5f上述元件時，必需要停機而使生 線無法運作，所以|± 士 …卞戶^以曰仏成出貨速度慢。另一方面，該母片 疋位件17 X到摩知後’其安裝部173之頂緣部位變窄，該 =匕就更容易左右位移，進而影響到成型出之光碟“ 精確性，而有軌道錯誤(kking E_，TE)的問題。 隨著科技曰新月異以及民眾對於資訊科技的需求 、先650MB谷s的CD已無法滿足民眾，故4.·的DVD =至於最近發展的27GB藍光光碟（bluen)，都是為了 =供更大的資料儲存容量所發展出的，而光碟片容量增大 光碟片上的轨道也就愈來愈密。雖然光碟播放機^ =取頭在讀取光碟片之執道時，可时微地自我調^ _讀取軌道資料’因此’運用在小容量的光碟片上，還 可从精由雷射讀取頭的自我調整來彌補碟片之 足的問題。 度不 但是，為了提高資料讀取的速度，目前光碟機之讀取 碩的轉速愈來愈快，而讀取頭轉速提高時就不易作執道讀 :上的自我調整，加上光碟片容量變大而執道變密的情： ，如果光碟片的軌導精度不佳，將容易導致讀取頭無法 7 200828303 正確地讀取轨道資肖，造成資料無法讀s，或是讀取錯誤 因此為了符合目前高科技趨勢，上述母片定位件17與 5母片18間的摩擦問題必定要努力克服，才能製作出高容 里且執道精度高之光碟片。 & a人刦斲，门瓜w开巾刘很的原因，在該模As shown in the imaginary line in Figure 2). As with Gong Liyi, a piece of master piece 18 can be used to form 300,000 pieces of optical discs 6 200828303. However, due to the above-mentioned existence of traces and rubs, every time a disc of about $ is formed, it must be fixed. The master piece 18 is taken out for polishing and maintenance, resulting in a process. Moreover, the mother sheet 18 tends to be inadvertently used due to excessive damage when the predetermined number of disc formations is not yet achieved. In addition, there is friction between the mother K-position member 17 and the mother sheet 18, which also accelerates the elimination rate of the positioning member 17 and further increases the production cost. Further advancement - When replacing or relocating the above components, it is necessary to stop the machine and the line cannot be operated. Therefore, the product is slow to ship. On the other hand, after the master piece clamping member 17 X is fixed, the top edge portion of the mounting portion 173 is narrowed, and the = 匕 is more likely to be displaced left and right, thereby affecting the formed optical disc "accuracy, and The problem of track error (kking E_, TE). With the rapid development of technology and the demand for information technology, the CD of the first 650MB Valley can no longer satisfy the people, so 4. DVD = as for the recent development of 27GB Blu-ray The optical discs (bluen) are developed for larger data storage capacity, and the optical disc capacity is increased and the track on the optical disc is getting denser and denser. Although the disc player ^=receives the disc while reading the disc. When you are in charge of the film, you can adjust the track data _ _ read track data 'so 'use it on a small-capacity optical disc, you can also make up for the problem of the foot of the disc from the self-adjustment of the laser read head. In addition, in order to improve the speed of data reading, the speed of reading the optical disc drive is getting faster and faster, and the read head speed is not easy to read: the self-adjustment on the disc, plus the disc The situation is getting bigger and the road is getting denser: If the disc The accuracy of the track guide is not good, it will easily lead to the read head can not be 7 200828303 correctly read the track capital, causing the data can not read s, or read errors, so in order to meet the current high-tech trend, the above-mentioned master positioning member 17 and 5 The friction problem between the mother and the 18 must be overcome, in order to produce a high-capacity and high-precision optical disc. & a robber, a melon w towel Liu is very reason, in the mold
仁15頂面與母片18間發現有粉末狀鎳屑顆粒的存在（所述 =片18為金屬Ni所製成），表示母#18還是有受到摩損才 會產生粉末狀鎳屑顆粒，而粉末狀鎳屑顆粒掉落在該模仁 ::::::片二刮損得更嚴重。而母片18粉末狀鎳屬 /洛、成因究竟為何’經由本案發明人研究後，得知 粉末狀鎳屑顆粒的產生，主要是源自於母片18與該 位件17間的摩擦所致。 疋 由於在進料過程中，光碟片原料的射出㈣與 f身的熱脹冷縮促使母片18移動時，該母片18與 定位件17間也會有摩擦產生，而且該母片定位件/ SUS•系列的鋼材，或是stavac系列 ： =用該等材料製成的母R位件17的摩擦係數約為^成左 右而無法降低。導致該母片18之内環部ΐ8ί .左 m的頂料緣175間摩損得最為嚴重 ^〜裝部 碟片之後，該母片18與該安裝苦H73頂部才合总=片光 如圖2假想線所示皆稍微呈内凹狀，因而導：：損而 誤（TE)現象，雖然此種摩耗皆為幾_而已 道錯 察（时假想線僅為示意），但—如㈣，易觀 已造成影響。 里先碟月上 200828303 除此之外，母片18掉落的粉末狀鎳屑顆粒，會使母片 18不能平貼固定於模仁15上，致使射出成型的光磾片3 =影響’將使雷射讀取頭產生聚焦錯誤(f。 的問題。 ; 【發明内容】 =此’本發明之目的’即在提供_種可以降低盘 間的摩擦力的模具及其母片定位件。 〃 ^是，本發明碟片成型模具，供—具有—内環部之母 2設置亚用於成型一碟片，並包含：上下對應之一活動模 ;一固定模、—設置在該活動模的底面的上模仁板、-設 置於該固定模的頂面並盥哕 模仁，以及―母片定位^ 板㈣界定出―模穴的 :母片定位件是設置在該模仁與該固定模 -=以及一個對應該母片之内環部而設置在該本體 的表面上的硬質潤滑膜。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 考圖式之—個較佳實施例的詳細說明中，將可 =圖3與圖^本發明碟片成型模具之較佳實施例， 疋° 4固預刻有貧訊坑而形成一資訊面的母片8設置， Ϊ = Γ型出一碟片(圖未示)'所述母片8並具有-個位於 中央的㈣部81’所述以可以是⑶光W、DVD光碟 片等，而該碟片成型模具包含：上下對應之—活動模2與 9 200828303 ’ 一固定模3、一設置在該活動模2底面的上模仁板4、一設 ^ 於該上模仁板4周緣之圍壁5、一設置於該固定模3頂面並 與上模仁板4、圍壁5共同界定出一模穴6〇的模仁6、一 安裝在該模仁6與該固定模3上的母片定位件7，以及一設 置在該母片定位件7中並具有一與模穴6〇連通的通道91 的襯套9。 。 所述上杈仁板4包括一個板體41，以及數個間隔貫穿 0 該板體41的上冷卻水道42。該模仁6包括一個由金屬材質 製成之模板61、一披覆在該模板61上的硬質層62，以及 數個貫穿該模板61的下冷卻水道63。其中，該硬質層62 是由高硬度之材質，例如類鑽碳（diam〇nd nke carb〇n，DLC) 、碳化鎢/碳（wc/c)、氮化鉻（CrN)、氮化鈦（TiN)、硬鉻等 材貝製成，其表面呈光滑並具有低摩擦係數，前述母片8 即疋貼附在該硬質層62上，藉由該硬質層62之設置，可 以降低母片8與模仁6間的摩損，由於該模仁6之設計為 _ 習用常見之構造，故不再說明。 本貝施例之母片定位件7包括一個本體71，以及一個 彼覆在該本體71之表面的硬質潤滑膜73。其中，該本體 71是由鋼材製成的，所述鋼材是例如JIS SUS42〇系列或是 STAVAC系列，且本體71具有一個設置在該固定模3與該 • 杈仁6中的安裝部711，以及一個自該安裝部711頂緣徑向 朝外環繞延伸出的定位部712,該安裝部711之外表面具有 • ，一個與該母片8之内環部31的，一内環面811對應的頂緣區 塊713。該定位部712包括一個連接該頂緣區塊713並與該 10 200828303 • 母片8之内環部81的一上表面812對應的定位面714，且 一 該定位面714與該母片8之上表面812存有一公差間隙而 非緊在抵接’且該母片8的移動距離是受到定位部712的 限制。 本實施例之硬質潤滑膜73是披覆該安裝部711之外表 面與該疋位部712之定位面714，且硬質潤滑膜73是選用 摩擦係數小於該本體7〗之材質所製成，所述硬質潤滑膜π • 之材質是可以選用：DLC、WC/C、CrN、ΊΠΝ、硬鉻…鐵氟 龍（Teflon)等材質，選用該等材質製造之硬質潤滑膜73具有 高硬度而耐摩耗、表面光滑而摩擦係數低、抗黏著、低攻 擊性等優點，且硬質潤滑膜73的形成方式是可以利用電子 束蒸鍍、雷射脈衝蒸鍍、陰極電弧蒸鍍、射頻濺鍍、磁控 濺鍍等物理氣相沉積技術（Physical Vap〇r Dep〇shi〇n，pvD) ，以及化學氣相沉積技術（Chemical Vap〇r DepOsitiQn，cvd) 電漿CVD、電鍍等方式，來成型於該安裝部7ii與該定 • 位部712上。其中，並以選用DLC鑛膜為最佳，因為DLC 鍍膜的低攻擊性可以進一步相對降低該母片8的摩耗。 本發明用於射出成型碟片時，先使熱塑性碟片原料熔 融呈液狀，並自該通道91射出填充人該模穴6Ό，經瞬間流 動而以預定厚度均句填覆於該母片8頂面，㈣融的^ . 原料冷卻成固體後即形成碟片成品。 在成型過程中，當熔融態的碟片原料流入該模穴6〇後 ，樓片原料的流動會推移該母片8移動，且原料的高溫會 使母片8熱脹冷縮，.因此，該母片8與該母片定位件7間 11 200828303 移動而摩擦’由於該母片定位件7上設置有該硬 係數=73，藉㈣硬㈣賴73表面光滑而具有低摩擦 '、 此可以有效減小與母片8間的摩擦力。 需要說明的是，雖然本實施例該硬質潤滑膜73是 ―個安裝部711與定位部712的表面 片8鱼哕α 仁疋，由於該母 之内^ 間的摩擦作用主要是產生在該母片8 二。卩Μ，錢該母片定位上對應該㈣部 ^所以本發明只要在該母片定位件7之_區塊713 。即對應該内環部81的地方）設置硬質潤 f ?3 成於整個安裝部川衫位部爪的表面上為限制 的摩: = 、WC/C、^、™、硬路’以及_ 材來的小，所二=定位件所吻^^^ 即m月 有效降低與該母片8間的摩擦力。亦 。7時二τ :潤滑膜73的摩擦係數為X，當X小於 孕乂仏者，0.2-χ>〇為最佳者。 紅上所述，藉由在母片定位7 滑且摩㈣數低之硬質騎m 73,以減^;^該表面光 T間的摩耗，故母片8受摩擦所產生的碎： —步即可以有效降低母片8 減）’進 時提升母片8、模介6金 間的到損，故可以同 有高精度之軌Λ—碟 ' 4 &明改善習知必需定時停機 12 200828303 保養母片8之缺失，故兼具有節省生產時間、加快出貨速 度之優點，確實達到本發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 月b以此限疋本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一種習知碟片成型模具的一剖視圖； 圖2疋圖1的一局部放大圖，同時顯示一母片與該碟 片成型杈具之一母片定位件的設置關係； 圖3是本發明碟片成型模具之一較佳實施例的一剖視 圖；及 圖4是圖3的—局部放大圖，同時顯示一母片與該較 佳實施例之一母片定位件的設置關係。The presence of powdery nickel crumb particles was found between the top surface of the kernel 15 and the mother sheet 18 (the = sheet 18 is made of metal Ni), indicating that the mother #18 is still damaged to produce powdery nickel crumb particles. Powdered nickel crumb particles fall on the mold: ::::: Sheet 2 is more severely scratched. The master piece 18 powdered nickel genus/lo, what is the cause? After the study by the inventor of the present invention, it was found that the generation of powdery nickel swarf particles was mainly caused by the friction between the mother piece 18 and the position piece 17. .疋Because during the feeding process, the ejection of the optical disc material (4) and the thermal expansion and contraction of the f body cause the mother sheet 18 to move, friction between the mother sheet 18 and the positioning member 17 may also occur, and the master positioning member / SUS• series of steel, or stavac series: = The friction coefficient of the female R-position 17 made of these materials is about ^ and can not be reduced. The inner ring portion of the mother piece 18 is ί8ί. The top edge 175 of the left m is the most severely damaged. After the disk is mounted, the master piece 18 and the top of the mounting bitter H73 are combined. The imaginary lines are slightly concave, so the guide: loss and error (TE) phenomenon, although the friction is a few _ and has been misreaded (the imaginary line is only a schematic), but - (4), easy The view has already had an impact. In addition, the first piece of the moon on the 200828303, in addition, the powdery nickel crumb particles dropped by the mother piece 18, the mother piece 18 can not be flatly fixed on the mold core 15, resulting in injection molding of the diaphragm 3 = impact 'will The problem arises in that the laser read head produces a focus error (f.). [Invention] The present invention provides a mold and a master positioning member thereof which can reduce the friction between the disks. ^ is that the disc forming mold of the present invention is provided with a mother 2 having an inner ring portion for forming a disc, and comprising: one movable mold corresponding to the upper and lower sides; a fixed mold, - disposed in the movable mold The upper mold plate of the bottom surface, the top surface of the fixed mold and the mold core, and the "master positioning plate" (4) define the "mold hole": the mother piece positioning member is disposed on the mold core and the fixing The mold-= and a hard lubricating film disposed on the surface of the body corresponding to the inner ring portion of the mother sheet. [Embodiment] The foregoing and other technical contents, features and effects of the present invention are in the form of a test pattern. In the detailed description of the preferred embodiment, the invention can be = FIG. 3 and FIG. In a preferred embodiment of the sheet forming mold, the mother sheet 8 is formed by pre-engraving a poor pit to form an information surface, and Ϊ = Γ type a disc (not shown) 'the mother sheet 8 and There may be a (four) portion 81' located at the center to be (3) light W, a DVD disc, etc., and the disc forming mold includes: upper and lower corresponding - movable mold 2 and 9 200828303 'a fixed mold 3, a setting An upper mold plate 4 on the bottom surface of the movable mold 2, a surrounding wall 5 disposed on the periphery of the upper mold plate 4, a top surface of the fixed mold 3, and a common surface of the upper mold plate 4 and the surrounding wall 5 a mold core 6 defining a mold hole 6 , a mother piece positioning member 7 mounted on the mold core 6 and the fixed mold 3, and a set in the mother piece positioning member 7 and having a mold cavity 6 The bushing 9 of the communicating passage 91. The upper jaw plate 4 includes a plate body 41 and a plurality of upper cooling water passages 42 spaced through the plate body 41. The mold core 6 includes a metal material. a template 61, a hard layer 62 overlying the template 61, and a plurality of lower cooling channels 63 extending through the template 61. wherein the hard layer 62 is made of high hardness Materials such as diamond-like carbon (diam〇nd nke carb〇n, DLC), tungsten carbide/carbon (wc/c), chromium nitride (CrN), titanium nitride (TiN), hard chrome, etc. The surface of the mother sheet 8 is smooth and has a low coefficient of friction. The mother sheet 8 is attached to the hard layer 62. By the arrangement of the hard layer 62, the wear between the mother sheet 8 and the mold core 6 can be reduced. The design of the rib 6 is _ a conventional configuration, and therefore will not be described. The master positioning member 7 of the present embodiment includes a body 71 and a hard lubricating film 73 covering the surface of the body 71. The body 71 is made of steel, such as the JIS SUS42〇 series or the STAVAC series, and the body 71 has a mounting portion 711 disposed in the fixed mold 3 and the 杈6, and The top edge of the mounting portion 711 radially outwardly surrounds the positioning portion 712. The outer surface of the mounting portion 711 has a top edge region corresponding to an inner annular surface 811 of the inner ring portion 31 of the mother substrate 8. Block 713. The positioning portion 712 includes a positioning surface 714 connected to the top edge block 713 and corresponding to an upper surface 812 of the inner ring portion 81 of the 10 200828303 • the main piece 8 , and the positioning surface 714 and the mother piece 8 The upper surface 812 has a tolerance gap instead of being in abutment and the moving distance of the mother piece 8 is limited by the positioning portion 712. The hard lubricating film 73 of the present embodiment is a positioning surface 714 covering the outer surface of the mounting portion 711 and the clamping portion 712, and the hard lubricating film 73 is made of a material having a friction coefficient smaller than that of the body 7. The hard lubricating film π • The material is optional: DLC, WC/C, CrN, tantalum, hard chrome... Teflon, etc. The hard lubricating film 73 made of these materials has high hardness and wear resistance. The surface is smooth, the friction coefficient is low, the anti-adhesion, the low aggression and the like, and the formation of the hard lubricating film 73 can be by electron beam evaporation, laser pulse evaporation, cathodic arc evaporation, radio frequency sputtering, magnetron control. Physical vapor deposition (Physical Vap〇r Dep〇shi〇n, pvD), and chemical vapor deposition (Chemical Vap〇r DepOsitiQn, cvd) plasma CVD, electroplating, etc., to form the installation The portion 7ii is located on the fixed portion 712. Among them, the DLC mineral film is selected as the best, because the low aggression of the DLC coating can further reduce the wear of the mother piece 8 relatively. When the present invention is used for injection molding a disc, the thermoplastic disc material is first melted into a liquid state, and the filling hole 6 is ejected from the passage 91, and is instantaneously flowed to fill the main sheet 8 with a predetermined thickness. The top surface, (4) melted ^. After the raw material is cooled to a solid, the finished disc is formed. During the molding process, when the molten disk material flows into the cavity 6, the flow of the raw material of the floor will shift and the mother 8 moves, and the high temperature of the raw material causes the mother 8 to expand and contract. The mother piece 8 and the mother piece positioning member 7 move between the 2008 200828303 and rub · 'Because the hard disk is set on the mother piece positioning member 7=73, the (four) hard (four) Lai 73 surface is smooth and has low friction ', which can Effectively reduce the friction with the mother sheet 8. It should be noted that, although the hard lubricating film 73 of the present embodiment is a mounting portion 711 and a surface sheet 8 of the positioning portion 712, the friction between the mother and the mother is mainly generated in the mother. Slice 8 II. Oh, the money is positioned on the master (4). Therefore, the present invention is only in the block 713 of the master positioning member 7. That is, a place where the inner ring portion 81 is provided is provided with a hard rung?3 which is a limit on the surface of the entire mounting portion of the Chuanchi portion claws: =, WC/C, ^, TM, hard path 'and _ material The small one, the second = the kiss of the positioning piece ^^^ That is, m month effectively reduces the friction between the mother piece 8. Also. 7:2 τ: The friction coefficient of the lubricating film 73 is X, and when X is less than the gestational age, 0.2-χ> is the best. In the red, by the hard positioning of the mother piece 7 and the low (four) number of low riding m 73, to reduce the friction between the surface light T, the mother piece 8 is broken by friction: It can effectively reduce the loss of the mother piece 8 minus the 'advance of the master piece 8 and the die-type 6 gold. Therefore, it can be used with the high-precision track-disc' 4 & Ming improvement knowing that it is necessary to stop the time 12 200828303 The absence of the master piece 8 has the advantages of saving production time and speeding up the shipping speed, and indeed achieves the object of the present invention. However, the above is only a preferred embodiment of the present invention, and is not limited to the scope of the present invention, that is, the simple equivalent change of the patent application scope and the description of the invention according to the present invention. And modifications are still within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional disc forming mold; FIG. 2 is a partially enlarged view of FIG. 1 simultaneously showing a master piece and a master positioning piece of the disc forming cookware; 3 is a cross-sectional view of a preferred embodiment of the disc forming mold of the present invention; and FIG. 4 is a partial enlarged view of FIG. 3, showing a master piece and a master piece positioning of the preferred embodiment. The setting relationship of the pieces.
13 200828303 【主要元件符號說明】 1……、 活動板 711 * ……安裝部 3……， ……固定模 712 * ……定位部 4…… .....上模仁板 713 * ……頂緣區塊 41…， •…·板體 714 * ……定位面 42 ·… .....上冷卻水道 73… •…··硬質潤滑膜 C ....,. .....围辟 ......R- U 〇 * ……母片 "…措/一 Q 1 ... ......r3n I班如 D 模1一 ο I π %邵 60,… …··模穴 811 * ……Θ %面 61 .… ••…模板 812 · ……上表面 62·… ••…硬質層 9·.… ……襯套 63 .… ……下冷卻水道 9卜· ……通道 7…… ••…母片定位件 71…， •…·本體 1413 200828303 [Description of main component symbols] 1......, movable plate 711 * ... mounting part 3..., ... fixed die 712 * ... positioning part 4 ... .... upper die plate 713 * ...... Top edge block 41..., •...·plate body 714 * ......positioning surface 42 ·..... upper cooling water channel 73... •...··hard lubricating film C ....,. ..... Encirclement...R-U 〇* ......Master piece"...Measurement/一Q 1 ... ......r3n I class such as D die 1 ο I π % Shao 60,... ...·· cavity 811 * ......Θ% face 61 .... ••...template 812 · ...... upper surface 62·... ••...hard layer 9·.... ...... bushing 63 .......... lower cooling channel 9卜·......Channel 7... ••...Master locator 71..., •...·body 14