1254034 玫、發明說明： 【發明所屬之技術領域】 本發明為一種模造玻璃鏡片的模具，係指一種用在模 造玻璃鏡片且其上設有鑽石保護膜的模具。 【先前技術】 一般製造玻璃鏡片的技術分為兩種，一種為傳統的研 磨製法，需經長時間的研磨、拋光及洗淨製程，且生產的 鏡片受限於球面鏡片，故較為不# ’另一種為模造技術， 係使用模具來模造玻璃鏡片，可以快速量產玻璃鏡片，且 可生產非球面鏡片，故使用上較為便利。 模造的方法如第一圖所示，其包含一上模具及 一下模具（2)，玻璃預形體（3)置於上、下模具（1 )(2 )之間，將玻璃預形體（3 )加熱至略高於玻璃軟 化點以上的溫度後，施加壓力在上、下模具（丄）（2 ) 上以改變玻璃預形體（3 )的形狀，待降溫後，原玻璃預 形體（3)即轉寫為模具（1) (2)表面所預設的形狀 ，在玻璃預形體（3)成型的過程中，由於玻璃預形體（ 3 )在軟化點上的高溫下與模具（丄）（2 )表面相接觸 ，谷易造成模具（1 ) ( 2 )表面狀況迅速劣化，而減少 模具（1 ) ( 2 )的使用壽命，故一般會在模具（i )( 2)表面錢上一層保護膜來保護模具（1) (2)的表面 ’ 5亥保4膜的主要功用如下： 1 ·防止玻璃與模具表面沾黏，使玻璃易於脫模。 2 ·防止模具表面氧化。 1254034 3.防止模具表面因模造過程中的高溫而劣化。 習用的保護臈大致分為^:龆，筮^ ^ 如铂#人人/ n $ H貴金>1膜’例 銀合金（P™L金⑽士心，其對於— 叙系用的碳化鎢模具附著性 、 即容易沾點玻璃，第二類為陶究膜^表面的離型性不佳 、马每瓷膜，例如碳化石夕（Sic)等耸 禮其對於模具的附著性較差，常有脫膜的危險，第三類為 :碳膜(一 UkeCarb〇n，DLC)，其對於溫度的耐受 不佳〗可適用於杈造部分熔點低的破璃種類，習用的 呆護膜皆有其限制存在，使製造者必須針對不同的玻璃種 類而使用不同保護膜的模具，且習用保護膜所具有的缺點 ’使传Μ具的壽命較短’故習用的保護膜使用上較麻煩且 耗費成本。 【發明内容】 有鏗於前述之習用的缺點，本發明係設計一種模具， 使其上的㈣膜能適用於各種玻璃’以增加模具使用的廣 泛性，並利用保護膜來延長模具的使用壽命。 為達到上述的創作目的，本發明所採用的技術手段為 ’設計-種模具，其中包括一模具底#，其係由膨脹率與 鑽石的膨脹率相近的陶瓷材料為主製成，其具有成形面， 另有一鑽石保護膜，其係以氣相沉積法沉積之鑽石膜，鑽 石保護膜位於模具底材的成形面上。 本創作的優點在於，利用鑽石本身之抗沾黏性、摩擦 係數極小、硬度高、耐蝕性極佳、導熱性佳的特性，使模 造玻璃鏡片的過程中，鑽石保護膜能充分的保護模具底材 1254034 ’使其不被侵或損耗 模造玻璃鏡片時的溫度 ’讓模具能使用在利用 政的延長模具的壽命， 【實施方式】 ’且鍍鑽Μ護料的溫度遠高於 ’故鑽石保護膜能耐受模造的溫度 各種玻璃來模造玻璃鏡片上，且有 在使用上確具有其實用性。 請參閱第二圖所示，本發明包括一鐵石保護膜（4) 模具底材（5)，其鑽石保護膜（4)為氣相沉積之 士石膜’成分上幾乎為純鑽石，另由於習用的模具底材之 材料多為碳化鎢’但是模造時的溫度高達·。c以上，碳 化鶴和氣相沉積之鑽石膜的熱膨脹率相差太大，容易使鑽 μ㈣（4)脫離模具底#(5)，故本發明所使用之 楱具底材（5 )的材料必須採用膨脹率和鑽石相近的陶兗 材料’例如碳切、氮切、氮化銘、或_為燒結體的 材料。 “實施方式是將模具底材（5)加工至所需精度，並將 枳具底材（5)的成形面加工至所需形狀，此一形狀可為 球面或非球面，於模具底材（5)的成形面上以氣相沉積 法鑛上-層鑽石保護膜（4)，鑽石保護膜（4)的厚度 大約在0.2-40“之間，這是因為鑽石保護膜（4 )的： 度必須大於G. 2 " m才會對模具底材（5 )有保護作用，若 超過40# m則過厚而容易脫模，氣相沉積的鑽石保護膜（ 4)是屬於有結晶型態的結構，結晶顆粒直徑可在2〇挪〜 20μιη的範圍内，Raman光譜分析儀鑑定鑽石膜品質的半高 寬值（Full Width ai Half Maximum height， FWHM) ^ 1254034 i.5一⑽的範圍内，故此時鑽石保護膜"）的表 面：度較差’所以鑽石保護膜"）@表面需經過拋光的 粒序，使表面粗度達到Ral〇mn以下，或如第三圖所示，在 亂相沉積鑽石保護膜（4)之前，先在模具底# (5)的 成形面上加上一到數層中間層（6 )，以增強鑽石保護膜 /)的附著力’使鑽石保護膜（4 )更加不易脫模，然 後在中間$ ( 6 )上進行氣相沉積鑽石保護膜（4 。 模造玻璃鏡片時，使模具位於通有氮氣的腔體内，或 位於真空的腔體内，以防止模具及破璃氧化，模造玻璃鏡 片的溫度大約纟350一650t之間，因高溫軟化玻璃的流動 ，對杈具底材（5)的表面產生強大的剪應力，且容易與 模具底材（5)表面產生反應，侵蝕模具底材（5)的表 面，並沾黏模具底材（5 )表面的材料，但模具底材（5 )表面鍍有一層鑽石保護膜（4 )，以氣相沉積法生長之 鑽石保護膜（4)，其鍍膜的溫度高達80(rc以上，故鑽 石保護膜（4)可耐受模造玻璃鏡片時的溫度，鑽石本身 具有抗沾黏的效果及摩擦係數極小的特點，故鑽石保護膜 (4 )可有效降低南溫軟化玻璃所產生的剪應力，且鑽石 的硬度相當高，鑽石保護膜（4 )可耐受多次的模造也不 會產生磨耗現象，又鑽石的财钱性極佳，與酸驗都不起反 應，連王水也無法侵蝕鑽石，故鑽石保護膜（4 )不會與 高溫的軟化玻璃起反應，可以充分的保護模具底材（5 ) 的成形面，且鑽石的導熱性是所有物質最快的，故加溫時 鑽石保護膜（4 )可將模具底材（5 )上的熱快速導入玻 1254034 璃預开/體中，冷卻時亦可將熱快速由玻璃中導出，以縮短 生產時程。 本發明所使用的鑽石保護膜雖然成本較習用鍍膜稍高 ’但可延長模具的使用壽命，使用鑽石保護膜所增加的成 本’與所延長的使用壽命相比較下，所增加的成本是微乎 其微的。 【圖式簡單說明】 (一） 圖式部分 第一圖為習用與本發明之使用狀態圖 第二圖為本發明實施例之外觀示意圖 第三圖為本發明另一實施例之外觀示意圖 (二） 元件代表符號 (1 )上模具 （2 )下模具 (3)玻璃預形體 （4)鑽石保護膜 (5 )模具底材 （6 )中間層BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for molding a glass lens, and to a mold for molding a glass lens and having a diamond protective film thereon. [Prior Art] Generally, the technology for manufacturing glass lenses is divided into two types. One is a conventional polishing method, which requires a long time of grinding, polishing, and cleaning processes, and the produced lenses are limited by spherical lenses, so it is not #' The other is the molding technology, which uses a mold to mold glass lenses, can mass-produce glass lenses, and can produce aspherical lenses, so it is convenient to use. The method of molding is as shown in the first figure, which comprises an upper mold and a lower mold (2), and a glass preform (3) is placed between the upper and lower molds (1) (2) to form a glass preform (3) After heating to a temperature slightly above the softening point of the glass, pressure is applied to the upper and lower molds (2) to change the shape of the glass preform (3). After the temperature is lowered, the original glass preform (3) is Transferred to the mold (1) (2) The shape pre-set by the surface, during the molding of the glass preform (3), due to the high temperature at the softening point of the glass preform (3) and the mold (丄) (2 When the surface is in contact, Gu Yi causes the surface condition of the mold (1) ( 2 ) to deteriorate rapidly, and the service life of the mold (1) ( 2 ) is reduced. Therefore, a protective film is generally applied to the surface of the mold (i) ( 2 ). To protect the surface of the mold (1) (2) 'The main functions of the 5 Haibao 4 film are as follows: 1 · Prevent the glass from sticking to the surface of the mold, making the glass easy to release. 2 · Prevent oxidation of the mold surface. 1254034 3. Prevent the mold surface from deteriorating due to the high temperature during molding. The conventional protection 臈 is roughly divided into ^: 龆, 筮 ^ ^ such as platinum #人人 / n $ H贵金 > 1 film 'example silver alloy (PTML gold (10) sage, its for - narrative carbonization Tungsten mold adhesion, that is, easy to touch the glass, the second type is the ceramic film ^ surface release is not good, horse per ceramic film, such as carbonized stone (Sic), etc., its adhesion to the mold is poor, There is often the risk of stripping. The third type is: carbon film (a UkeCarb〇n, DLC), which is not well tolerated by temperature. It can be applied to the type of broken glass with low melting point. All of them have limitations, so that manufacturers must use different protective film molds for different types of glass, and the conventional protective film has the shortcoming 'the short life of the transfer device', so the conventional protective film is more troublesome to use. The present invention is directed to a mold in which the (four) film can be applied to various glasses to increase the versatility of the use of the mold and to extend the use of the protective film. The service life of the mold. In order to achieve the above creative purpose, this The technical means adopted by Ming is 'design-type mold, which includes a mold bottom #, which is mainly made of ceramic material with the expansion ratio similar to that of diamond. It has a forming surface and another diamond protective film. It is a diamond film deposited by vapor deposition, and the diamond protective film is located on the forming surface of the mold substrate. The advantage of this creation is that the diamond itself has excellent anti-sticking property, low friction coefficient, high hardness and excellent corrosion resistance. The characteristics of good thermal conductivity make the diamond protective film fully protect the mold substrate 1254034 'so that it will not be invaded or lose the temperature when molding the glass lens', in the process of molding the glass lens, so that the mold can be used in the extension of the use of the government The life of the mold, [Embodiment] 'The temperature of the diamond-plated casing is much higher than 'the diamond protective film can withstand the temperature of the molding of various glass to mold the glass lens, and it has practicality in use. Referring to the second figure, the present invention comprises a stone protective film (4) mold substrate (5), and the diamond protective film (4) is a component of the vapor deposition stone film. Pure diamonds, and because the material of the conventional mold substrate is mostly tungsten carbide', but the temperature at the time of molding is as high as .·c or more, the thermal expansion rate of the carbonized crane and the vapor deposited diamond film is too different, and it is easy to make the μ (4) (4) Out of the mold bottom # (5), the material of the cookware substrate (5) used in the present invention must use a ceramic material having a similar expansion ratio and diamonds, such as carbon cutting, nitrogen cutting, nitriding, or sintering. The material of the body. "The embodiment is to process the mold substrate (5) to the required precision and process the forming surface of the cookware substrate (5) to a desired shape, which may be spherical or aspherical, The forming surface of the mold substrate (5) is a vapor-deposited ore-layer diamond protective film (4), and the thickness of the diamond protective film (4) is between 0.2 and 40", because the diamond protective film ( 4): The degree must be greater than G. 2 " m will have a protective effect on the mold substrate (5). If it exceeds 40# m, it will be too thick and easy to demould. The vapor deposited diamond protective film (4) is It belongs to a structure with a crystalline form, and the diameter of the crystal particles can be in the range of 2 〜 to 20 μmη, Raman The spectrum analyzer identifies the full width of the diamond film (FWHM) ^ 1254034 i.5 one (10), so the surface of the diamond protective film "): poor degree 'so diamond protection Membrane ") @The surface needs to be polished to make the surface roughness below Ral〇mn, or as shown in the third figure, before the disorderly deposition of the diamond protective film (4), first at the mold bottom # (5 Adding one to several intermediate layers (6) on the forming surface to enhance the adhesion of the diamond protective film /) to make the diamond protective film (4) more difficult to demould, and then gas in the middle $ ( 6 ) Phase deposited diamond protective film (4. When molding a glass lens, the mold is placed in a cavity with nitrogen gas or in a cavity of the vacuum to prevent oxidation of the mold and the glass. The temperature of the molded glass lens is between 纟350 and 650t, and the glass is softened by high temperature. Flowing, exerting strong shear stress on the surface of the cookware substrate (5), and easily reacting with the surface of the mold substrate (5), eroding the surface of the mold substrate (5), and adhering the mold substrate (5) The surface material, but the surface of the mold substrate (5) is coated with a diamond protective film (4), and the diamond protective film (4) is grown by vapor deposition. The temperature of the coating is as high as 80 (rc or more, so the diamond protective film (4) The temperature at which the glass lens can be tolerated, the diamond itself has the anti-sticking effect and the friction coefficient is extremely small, so the diamond protective film (4) can effectively reduce the shear stress generated by the softened glass of the south temperature, and the diamond The hardness of the diamond protective film (4) can withstand multiple moldings without causing wear and tear, and the diamonds have excellent financial resources, and they do not react with the acid test. Even Wangshui can not erode diamonds. Therefore, diamond protective film (4) It reacts with the high temperature softened glass to fully protect the forming surface of the mold substrate (5), and the thermal conductivity of the diamond is the fastest of all materials, so the diamond protective film (4) can be used to mold the substrate. (5) The hot heat is quickly introduced into the glass 1254034 glass pre-opening/body, and the heat can be quickly exported from the glass during cooling to shorten the production time. The diamond protective film used in the present invention is slightly higher in cost than the conventional coating. 'But it can extend the service life of the mold, and the added cost of using the diamond protective film' is less than the extended service life. The added cost is very small. [Simplified illustration] (1) The first part of the drawing BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 is a schematic view showing the appearance of an embodiment of the present invention. FIG. 3 is a schematic view showing the appearance of another embodiment of the present invention (2) component symbol (1) upper mold (2) lower mold (3) Glass preform (4) Diamond protective film (5) Mold substrate (6) Intermediate layer