200927419 * 九、發明說明： 【發明所屬之技術領域】 , 本發明涉及一種校正模具之偏心模仁之方法及模具， .尤其涉及一種可消除光學鏡片成型過程中存在之偏心誤差 之校正模具之偏心模仁之方法及模具。 【先前技術】 隨著多媒體技術之發展，數位相機、攝像機及帶有攝 像功能之手機等電子產品越來越為廣大消費者青睞。人們 對數位相機、攝像機及帶有攝像功能之手機等產品之鏡頭 ® 追求小型化之同時，對其拍攝出之物體之影像品質亦提出 了更高之要求，即希望拍攝物體之影像晝面清晰，而物體 之成像品質於很大程度上取決於鏡頭模組内各光學元件之 優劣。鏡頭模組一般包括透鏡、光學濾光片及影像感測器 等光學元件。光學元件通常採用注射成型製程製造。 注射成型係對模仁坯料之形狀及結構進行加工以製成 模仁，再將該模仁與模板組裝成一套完整之模具，並將該 ❹模具裝設於成型機上，同時控制該模具中之壓力及溫度， 使融熔之塑膠注入該模具中，最終經冷卻固化成型出塑’膠 製品，其以低成本、高效率、高精度等優點而被廣泛應用， 可參見 Leslie J. Bowen 等人於文獻 Applications of Ferroelectrics, 1992. ISAF '92., Proceedings of the Eighth IEEE International Symposium on 中之 Fabrication of Piezoelectric Ceramic/Polymer Composites by Injection Molding —文。 200927419 使用上述模具製造光學鏡片時，由於模仁之加工誤差 =及；M:與模板之安裝誤差，而使得該模仁於成型過程中 子在偏心現象，從而使得所成型之光學鏡片產生偏心誤差。 先前技術中，當模仁於成型過程中存在偏心現象時， 一般採用更換該偏心模仁或對該偏心模仁進行再加工之 法’以校正該偏心模仁H上述方法成本較高。 【發明内容】200927419 * IX. Description of the invention: [Technical field of invention] The present invention relates to a method and a mold for correcting an eccentric mold of a mold, and more particularly to an eccentric mold for correcting a mold having an eccentricity error in an optical lens forming process. Ren method and mold. [Prior Art] With the development of multimedia technology, electronic products such as digital cameras, video cameras, and mobile phones with camera functions are increasingly favored by consumers. At the same time, the lens® of digital cameras, camcorders, and mobile phones with camera functions pursues miniaturization, and the image quality of the objects it shoots is also higher, that is, the image of the object to be photographed is clear. The image quality of the object depends to a large extent on the advantages and disadvantages of the optical components in the lens module. The lens module generally includes optical components such as a lens, an optical filter, and an image sensor. Optical components are typically fabricated using an injection molding process. The injection molding process processes the shape and structure of the mold blank to form a mold core, and then assembles the mold core and the template into a complete mold, and mounts the mold on the molding machine while controlling the mold. The pressure and temperature, so that the molten plastic is injected into the mold, and finally cooled and solidified to form a plastic 'plastic product, which is widely used for its advantages of low cost, high efficiency and high precision, see Leslie J. Bowen et al. In the Application of Ferroelectrics, 1992. ISAF '92., Proceedings of the Eighth IEEE International Symposium on, Fabrication of Piezoelectric Ceramic/Polymer Composites by Injection Molding. 200927419 When using the above mold to manufacture optical lenses, due to the processing error of the mold core = and; M: installation error with the template, the mold is eccentric in the forming process, which causes the formed optical lens to produce eccentricity error. In the prior art, when the mold core has an eccentricity during the molding process, the method of replacing the eccentric mold core or reworking the eccentric mold core is generally employed to correct the eccentric mold core H. The above method is costly. [Summary of the Invention]
有雰於此’提供-種可消除光學鏡片成型過程中存在 ❹差且低成本之校正模具之偏心模仁之方法及模具 -種校正模具之偏心模仁之方法，其包括以下步驟·· =供-用於成型光學鏡片之模具，所述模具包括U 述第板相對設置之第二模板，-設置於所 第：rf: 一設置於所述第二模板且與所述 ❹ 、袞珠=目對⑦置之第二模仁’―套設於所述第二模仁之 =珠套湾，及複數設置於所述滚珠套筒之第—滾珠，所述 拉板設有-安裝所述第—模仁及所述滚珠套筒 面乏模仁設有一用於成型所述光學鏡片之第-曲 鏡片之第二曲面之第二成型二==所述光學 與第-成型面之令心線之間具有一偏差；成中心線 _ 巧1倚產1，所迷每一個第 ^之兩側分別抵紐所述第二模板之安裝孔之内壁及 量之外壁，所述複數第—滾珠之直徑相同；測 、〔第二模仁之第二成型面之令心線與所述第—模仁之 200927419 f一成型面之中心線之間之偏差量’並計算校正所述偏差 量所需之所述第二模仁之調整量，以及調整所述第二模仁 所需之複數第二滾珠之直徑，所述複數第二滾珠具有至少 兩種大小相異之直徑；將所述複數第一滾珠從所述滾珠ς ，中取出；將所述複數第二料置人所錢珠套筒，並使 得所述複數第二滾珠之兩側分別抵靠於所述第二模板之安 裝孔之内壁及所述第二模仁之外壁，以調整所述第二模仁 與所述第-模仁之間之相對位置，使得所述第二模仁之第 e 二成型面之中（線與所述第—模仁之第—成型面之中心線 重合。 ο ρ種模具’其包括：_第—模板，—與所述第—模板 目對设置之第二模板’一設置於所述第一模板之第一模 -設置於所述第二模板且與所述第—模仁相對設置之 =-杈仁，-套設於所述第二模仁之滾珠套 =於所述滚珠錢之滾珠，所料二模板設有—安裝料 =模仁及所述滾珠套筒之安裝孔，所述每—個滾珠之兩 ^別抵靠於所述第二模板之安裝孔之内壁及所述第二模 直柄卜壁’、中’所述複數滾珠具有至少兩種大小相異之 相對於先前肋，料校正模具之心模仁之方 由調整抵靠於所述第二模板之安裝孔之内壁及所 仁盘所‘之二壁之；蛛之直徑大小’以調整所述第二模 =述第一_仁之間之相對位置’從而校正所述第二模 仁之第二成型面之十心線與所述第一模仁 200927419 .中心線之間之偏差量，而無需更換模仁或對模仁進行再加 工，進而降低了生產成本。 •【實施方式】 . 下面將結合圖式對本發明作進一步之詳細說明。 請參閱圖1，為本發明提供之—種校正模具之偏心模仁 之方法之流程圖。所述校正模具之偏心模仁之方法包括以 下步驟： 一步驟^請參閱圖2,圖2為本發明第一實施例提供之 ❹一種具有偏心模仁之模具10,所述模具10用於成型光學鏡 片30 (如圖3所示），所述模具1〇包括一第一模板1〇〇, 一與所述第一模板100相對設置之第二模板η〇，一設置於 所述第-模板1GG之第-模仁12g，-設置於所述第二模板 no且與所述第一模仁120相對設置之第二模仁13〇，一套 ，設於所述第二模仁130之滾珠套筒14〇，複數設置於所述滾 珠套筒140之第一滾珠150,及至少一與所述第二模仁13〇 連接之頂桿160。 © 所述第二模板no設有一安裝所述第一模仁12〇及所 述滾珠套筒140之安裝孔112。 所述第一模仁120設有一第一成型面122，所述第一成 型面122用於成型所述光學鏡片3〇之第一曲面32。 所述第二模仁130與所述第二模板11〇之間之配合方 式為間隙配合，所述第二模仁13〇與所述第二模板ιι〇之 間之間隙小於〇.〇1毫米。所述第二模仁13〇設有一第二成 型面132,所述第二成型面132用於成型所述光學鏡片 200927419 所述第二模仁130之中心線八6與所述第-才、仁〇之中心線As之間具有偏心誤差。 .所述滾珠套筒mo為4空之, .安裝孔142 (如圖4所干^絍彳—壯， /、认有锼數 第-肀珠150 裝2用於安裝所述 :=>二珠套筒140之材料為軟性金屬或塑 膠。本實細例中，所述滚珠套筒14〇之材料為紹。可以理 解，所述滾珠套筒⑽之材料亦可以為其他軟性金屬，例 如紹合金。 ❹“所述每—個第—滾珠⑽之兩側分別抵靠於所述第二 模板110之安裝孔112之内壁1122及所述第二模仁⑽之 外壁丄34。所述複數第一料15〇之直徑相㈤。所述第一滾 珠150之材料為硬質金屬或陶竟。本實施例中，所述第一 滾珠150之材料為不錄鋼。可以理解，所述第一滾珠㈣ •之材料亦可以為其他硬質金屬，例如碳素鋼。 所述頂桿16G用於賴時推賴述第二模仁謂，使得 所述第二模仁13()相對於所述第二模板ιΐ()垂直向上移 ❹動’從而使得所述光學鏡片3〇脫離所述第二模板ιι〇。所 述第二模仁130相對於所述第二模板11〇垂直向上移動過 程中，可相對於所述複數第一滾珠15〇滑動。 步驟2,請參_ 3, ® 3為模具1〇職型之光學鏡 片30。應用-三座標測量儀（圖未示），以所述光學鏡片 30之第一面面32為基準，測量所述光學鏡片3〇之第二曲 面34與所述第一曲面32之偏差量。 所述光學鏡片30之第二曲面34之中心線、與所述第 200927419 一曲面32之中心線a # u 30 > ^ ^ 1 3 /、有偏心誤差δ。根據所述光學 參 中心線Α2與所述第一曲面32之 中心線Ai之間之值,、、、#里s u δ、差δ，故可以得知所述第二模仁130 .之中心線Α6與所述第一模 n L弟模仁120之中心線As之間具有偏 I L 要將所述第二模仁130向右側調整谷位 1义正所述第二模仁13Q之中心線Α6與所述第一模仁 120之中、線八5之間之偏心誤差δ。根據所述第二模仁η。 向右側調整之位移δ，可以計算出所需要之所述第二計 ❹130左側及右侧之複數第二滾珠ΐ7〇、ΐ8〇之直徑。 、步驟3 ’請參_ 4，® 4為所述模具1G之複數第一 滾珠150從滾珠套筒14〇中取出後之示意圖。藉由施加外 力使得所述滾珠套筒⑽之安裝孔142之孔徑變大，以將 安裝於所述滚珠套筒14〇中之複數第一滾珠15〇取出。 步驟4 參閱圖5，為校正圖3所示之所述光學鏡片 30之第二曲面34之中心線A?與所述第一曲面32之中心線 Ai之間之偏心誤差δ，需要將所述第二模仁13〇向右侧調 ❹整δ位移。因此，需要將所述複數第二滾珠170、180置入 所述滾珠套筒150，並使得所述複數第二滾珠17〇、18〇之 兩侧分別抵靠於所述第二模板110之安裝孔112之内壁 1122及所述第二模仁13〇之外壁134，以將所述第二模仁 130相對於所述第一模仁1〇〇向右侧調整δ位移，使得所述 第二模仁130之第二成型面132之中心線Αδ與所述第一模 仁120之第一成型面122之中心線As重合。校正後之模具 10之第一模仁130之左側設有之複數滚珠170之直徑相 11 200927419 同，所述第二模仁130之右側設有之複數滾珠18〇之直徑 亦相同，所述複數滾珠170之直徑大於所述複數滾珠1 •之直徑。 . 由於所述校正模具之偏心模仁之方法藉由調整抵靠於 所述第二模板110之安裝孔112之内壁1122及所述第二模 仁130之外壁134之滾珠之直徑大小，以調整所述第二模 仁130與所述第一模仁12〇之間之相對位置，從而校正所 述第二模仁130之第二成型面132之中心線、與所述第一 ❹模仁120之第一成型面122之中心線As之間之偏差量，而 無需更換模仁或對模仁進行再加工，進而降低了生產成本。 請參閱圖6,圖6為本發明第二實施例提供之一種具有 偏心模仁之模具20’所述模具20與所述第一實施例提ς之 拉具ίο之區別在於··所述模具2〇之第二模仁23〇之第二 成型面232之中心線As與第一模仁22〇之第一成型面2二 之中心線A?之間具有傾斜誤差。 請參閱圖7,圖7為模具2〇所成型之光學鏡片5〇。廉 ©用-三座標測量儀（圖未示），以所述光學鏡片5〇之第： 曲面52為基準，測量所述光學鏡片50之第二曲面54鱼 述第一曲面52之偏差量。 '、 二 〇此偶，、W所成型之光學鏡片5〇之第二曲面“之 線Α4與第曲面52之中心線心之間具有傾斜誤差㊀ ==?片5〇之第二曲面54之中心線Α趣 ^ 、之間之傾斜誤差θ，可以得知所述; 、- 230之第二成型面232之中心線、與所述第—模4 12 200927419 之第-成型面222之中心線&之間具 因此，需要將所述第二模仁23〇， ，、。 .之第一成型面222^ , 所这第一棋仁220 ㈣2 線7與所述第二模仁23〇之第- •成型面说之中心線α8之交點，沿逆時針方向旋轉^产: 二=所述第二模仁23〇之第二成型面攻之中心線^ 模仁220之第一成型面222之中 傾 ❹ :匕 =右側之複數第一滾珠25°，更換為直徑不 230 H =滚珠謂（如圖8所示）。根據所述第二模仁 =時針方向旋轉之角度θ，可以計算出所需要之所述 弟一杈仁230左側及右側之複數第二滾珠27〇之直徑。 請參閱圖8，為校正圖7所示之所衫學鏡片Γ〇之第 二曲面54之中心線〜與所述第一曲面52之中心線、之 間之傾斜誤差θ，需要將所述第二模紅23〇 ,圍繞所述第一 ㈤二220之第—成型面奶之中心線^與所 〇 細之第二成型面232之中心線〜之交點，沿逆時針方^向 旋轉Θ角度。因此’需要將所述第二模仏23〇左侧及右側 之複數第-滾珠25G ’更換為直徑不同之複數第二滾珠 27〇,並使得所述複數第二滾珠27〇之兩側分別抵靠於所述 第二模板210之安裝孔212之内壁2122及所述第二模仁 230之外壁234,以將所述第二模仁23〇 ’圍繞所述第一模 仁220之第一成型面222之中心線A?與所述第二模仁 之第二成型面232之中心線八8之交點，沿逆時針方向旋轉 Θ角度’從而使得所述第二模仁23〇之第二成型面232之中 13 200927419 =之，所述第一模仁22。之第一成型面222之中心線 .tL:後之模具2〇之第二模仁230之左側設有之複 .徑不同，且沿遠離所述第一模板200之方 ^ A所述第一极仁230之右側設有之複數滾珠270 不同，且沿遠離所述第一模板2.00之方向逐漸變小。 -妒I:理解’光學鏡片之兩個曲面之中心線之間之偏差 2偏心誤差與傾斜誤差之組合，對於此種情況亦可以 =方法3^正光學鏡片之兩個曲面之中^線之間之偏 ©差 综上所述，本發明確已符合發明專利之要件，遂依法 出專利中請。惟’以上所述者僅為本發明之較佳實施方 =自不能以此限制本案之中請專利範圍。舉凡熟悉本案 之人士援依本發明之精神所作之等效修飾或變化，皆 應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1 ©之流程圖 係本發明提供之一種校正模具之偏心模仁之方法 圖2係本發明第一實施例提供之一種具有偏心模仁之 模具之剖視圖。 圖3係圖2所示之模具所成型之光學鏡片之示意圖。 圖4係圖2所示之模具之複數第一滚珠從滾珠套筒中 取出後之示意圖。 圖5係圖2所示之模具之模仁被校正偏差後之示意圖。 圖6係本發明第二實施例提供之一種具有偏心模仁之 14 200927419 模具之剖視圖。 圖7係圖6所示之模具所成型之光學鏡片之示意圖。 * 圖8係圖6所示之模具之模仁被校正偏差後之示意圖。 .【主要元件符號說明】 模具 10，20 第一模板 100 ，200 第二模板 110 ， 210 安裝孔 112 ，：142，212 内壁 1122 ， 2122 第一模仁 120 ，220 第一成型面 122 ， 222 第二模仁 130 ，230 第二成型面 132 ， 232 外壁 134 ，234 滾珠套筒 140 第一滾珠 150 ，250 頂桿 160 第二滾珠 170 ，180 ， 270 光學鏡片 30，50 第一曲面 32， 52 第二曲面 34，54 15There is a method for providing an eccentric mold for correcting a mold with a poor and low cost in the process of forming an optical lens, and a method for correcting an eccentric mold of a mold, which comprises the following steps: a mold for molding an optical lens, the mold comprising a second template disposed opposite to the first plate, disposed at: rf: one disposed on the second template and opposite to the ❹, 衮 beads 7: the second mold core is disposed on the second mold core = bead shell bay, and a plurality of first ball disposed on the ball sleeve, the pull plate is provided - the first mold is installed And the ball sleeve surface lacking mold core is provided with a second molding surface for forming a second curved surface of the first curved lens of the optical lens== between the optical line of the optical and the first molding surface There is a deviation; the center line _ 巧1 depends on the production 1, the two sides of each of the two sides respectively correspond to the inner wall of the mounting hole of the second template and the outer wall of the quantity, the plurality of the first ball have the same diameter Measure, [the second molding surface of the second mold core and the first mold core 200 927419 f the amount of deviation between the centerlines of a molding surface' and calculating the adjustment amount of the second mold core required to correct the deviation amount, and the diameter of the plurality of second balls required to adjust the second mold core The plurality of second balls have at least two diameters different in size; the plurality of first balls are taken out from the ball shank; the plurality of second materials are placed on the money bead sleeve, and The two sides of the plurality of second balls respectively abut against the inner wall of the mounting hole of the second template and the outer wall of the second mold to adjust the relative relationship between the second mold core and the first mold core Positioning such that the center of the second molding surface of the second mold core (the line coincides with the center line of the first molding surface of the first mold core). ο ρ molds include: _th - template, - and The second template set to the first template is disposed in the first template of the first template, and is disposed on the second template and is disposed opposite to the first mold core. a ball sleeve disposed on the second mold core = a ball on the ball of the ball, and a second mold Providing a mounting material=a mold core and a mounting hole of the ball sleeve, wherein each of the two balls abuts against an inner wall of the mounting hole of the second template and the second mold straight handle The plurality of balls of the wall ', the middle' have at least two different sizes relative to the previous ribs, and the core of the material correcting mold is adjusted to abut against the inner wall of the mounting hole of the second template and the disk 'the second wall; the diameter of the spider' is adjusted to adjust the relative position between the second die and the first die to correct the ten-core line of the second molding face of the second die and the first Moumin 200927419. The amount of deviation between the centerlines without the need to change the mold core or rework the mold core, thereby reducing the production cost. [Embodiment] The present invention will be further described in detail below with reference to the drawings. Please refer to FIG. 1 , which is a flow chart of a method for correcting an eccentric mold of a mold. The method for correcting the eccentric mold of the mold comprises the following steps: First, please refer to FIG. 2, which is a mold 10 having an eccentric mold for forming an optical lens according to a first embodiment of the present invention. 30 (shown in FIG. 3), the mold 1〇 includes a first template 1〇〇, a second template η〇 disposed opposite to the first template 100, and a first template 1GG a first mold core 12g, a second mold core 13 disposed on the second template no and opposite to the first mold core 120, and a set of ball sleeves disposed on the second mold core 130 14〇, a plurality of first balls 150 disposed on the ball sleeve 140, and at least one ram 160 connected to the second mold core 13〇. The second template no is provided with a mounting hole 112 for mounting the first mold core 12 and the ball sleeve 140. The first mold core 120 is provided with a first molding surface 122 for molding the first curved surface 32 of the optical lens 3 . The manner of cooperation between the second mold core 130 and the second template 11〇 is a clearance fit, and the gap between the second mold core 13〇 and the second template ιι is less than 〇.〇1 mm . The second mold core 13 is provided with a second molding surface 132 for molding the center line VIII of the second mold core 130 of the optical lens 200927419 and the first There is an eccentricity error between the center line As of Renqi. The ball sleeve mo is 4 empty, the mounting hole 142 (as shown in Fig. 4), /, the number of the first number - the bead 150 is installed for the installation: => The material of the two-bead sleeve 140 is a soft metal or a plastic. In the present embodiment, the material of the ball sleeve 14 is the same. It can be understood that the material of the ball sleeve (10) can also be other soft metals, for example. The two sides of each of the first-balls (10) respectively abut against the inner wall 1122 of the mounting hole 112 of the second template 110 and the outer wall 丄 34 of the second mold core (10). The diameter of the first material 15 is (5). The material of the first ball 150 is hard metal or ceramic. In this embodiment, the material of the first ball 150 is not recorded steel. It can be understood that the first The material of the ball (4) can also be other hard metal, such as carbon steel. The ram 16G is used to refer to the second mold, so that the second mold 13 () relative to the first The second template ιΐ() moves vertically upwards to move 'the optical lens 3 〇 away from the second template ιι. The second mold core 130 During the vertical upward movement of the second template 11 ,, it can slide relative to the plurality of first balls 15 。. Step 2, please refer to _ 3, ® 3 as the optical lens 30 of the mold 1 。 type. Application - A three-coordinate measuring instrument (not shown) measures the deviation of the second curved surface 34 of the optical lens 3 from the first curved surface 32 based on the first surface 32 of the optical lens 30. The center line of the second curved surface 34 of the optical lens 30 and the center line a # u 30 > ^ ^ 1 3 / of the surface of the curved surface 32 of the 200927419 have an eccentricity error δ. According to the optical reference center line 与2 and The value between the center line Ai of the first curved surface 32, , , , # su δ, the difference δ, so that the center line Α6 of the second mold core 130 and the first mold n L The center line As of the mold core 120 has a bias IL. The second mold core 130 is adjusted to the right side. The center line Α6 of the second mold core 13Q and the first mold core 120 are adjusted to the right side. The eccentricity error δ between the lines 8 and 5. According to the second mold η, the displacement δ is adjusted to the right side, and the required second meter can be calculated. The diameter of the second ball ΐ7〇, ΐ8〇 on the left and right sides of 130. Step 3 'Please refer to _ 4,® 4 is the plurality of first balls 150 of the mold 1G taken out from the ball sleeve 14 〇 The outer diameter of the mounting hole 142 of the ball sleeve (10) is increased by applying an external force to take out the plurality of first balls 15 mounted in the ball sleeve 14〇. Step 4 Referring to FIG. 5, Correcting the eccentricity error δ between the center line A? of the second curved surface 34 of the optical lens 30 shown in FIG. 3 and the center line Ai of the first curved surface 32, the second mold core 13 needs to be turned toward Adjust the δ displacement on the right side. Therefore, the plurality of second balls 170, 180 need to be placed into the ball sleeve 150, and the two sides of the plurality of second balls 17 〇, 18 分别 are respectively abutted against the installation of the second template 110. The inner wall 1122 of the hole 112 and the outer wall 134 of the second mold core 13 are arranged to adjust the δ displacement of the second mold core 130 relative to the first mold core 1 to the right side, so that the second The center line Αδ of the second molding surface 132 of the mold core 130 coincides with the center line As of the first molding surface 122 of the first mold core 120. The diameter phase 11 of the plurality of balls 170 disposed on the left side of the first mold core 130 of the corrected mold 10 is the same as the diameter of the plurality of balls 18 设有 provided on the right side of the second mold core 130. The diameter of the ball 170 is larger than the diameter of the plurality of balls 1 . The method of correcting the eccentric mold of the mold is adjusted by adjusting the diameter of the ball against the inner wall 1122 of the mounting hole 112 of the second template 110 and the outer wall 134 of the second mold 130 The relative position between the second mold core 130 and the first mold core 12〇, thereby correcting the center line of the second molding surface 132 of the second mold core 130 and the first mold core 120 The amount of deviation between the center lines As of the first molding surface 122 does not require replacement of the mold core or reworking of the mold core, thereby reducing the production cost. Referring to FIG. 6 , FIG. 6 is a second embodiment of the present invention. The mold 20 having an eccentric mold core is different from the first embodiment. The mold 2 is different from the mold 2 of the first embodiment. There is a tilt error between the center line As of the second molding surface 232 of the second mold core 23 and the center line A of the first molding surface 22 of the first mold core 22 . Please refer to FIG. 7. FIG. 7 is an optical lens 5〇 formed by the mold 2〇. The inaccurate © is measured by a three-coordinate measuring instrument (not shown), and the second curved surface 54 of the optical lens 50 is used to measure the amount of deviation of the first curved surface 52 from the curved surface 52 of the optical lens. ', the second surface of the second optical surface of the optical lens 5 成型 formed by W has a tilt error between the center line 4 of the curved surface 4 and the curved surface of the second curved surface 52 ==? The center line of interest ^, the tilt error θ between, can be known; the center line of the second molding surface 232 of the -230, and the center line of the first molding surface 222 of the first mold 4 12 200927419 Therefore, there is a need for the second mold core 23, the first molding surface 222, the first chess piece 220 (four) 2 line 7 and the second mold core 23 - The intersection of the center line α8 of the forming surface is rotated counterclockwise. 2: The center line of the second molding surface of the second mold core 23〇 ^ The first molding surface 222 of the mold core 220 Middle tilt: 匕 = plural first ball on the right side 25°, replaced with diameter not 230 H = ball said (as shown in Figure 8). According to the angle θ of the second mold = hour hand rotation, can be calculated The required diameter of the second ball 27 左侧 on the left and right sides of the 杈 杈 230 230 230. Please refer to Figure 8 for the correction of the lens shown in Figure 7. The tilt error θ between the center line of the second curved surface 54 and the center line of the first curved surface 52, the second mold red 23 需要 is required to surround the first (five) two 220 first forming surface The center line of the milk is intersected with the center line of the second molded surface 232, and the angle is rotated counterclockwise. Therefore, it is necessary to pluralize the left and right sides of the second mold 23 The first ball 25G is replaced with a plurality of second balls 27〇 having different diameters, and the two sides of the plurality of second balls 27 are respectively abutted against the inner wall 2122 of the mounting hole 212 of the second template 210 and the The outer wall 234 of the second mold core 230 is configured to surround the center line A of the first molding surface 222 of the first mold core 220 with the second molding surface of the second mold core At the intersection of the center line 八 of 232, the angle ' is rotated counterclockwise so that the second molding surface 232 of the second mold core 23 is 13 200927419 = the first mold core 22 The center line of a molding surface 222. tL: the rear side of the second mold core 230 of the mold 2 is provided with a different diameter and a long distance The plurality of balls 270 disposed on the right side of the first pole 230 of the first template 200 are different, and gradually become smaller in a direction away from the first template 2.00. -妒I: Understanding 'optical lenses The deviation between the centerline of the two curved surfaces, the combination of the eccentricity error and the tilting error, can also be used in this case = method 3^ The difference between the two lines of the positive optical lens is the difference between the two lines As described above, the present invention has indeed met the requirements of the invention patent, and is required to be patented according to law. However, the above is only the preferred embodiment of the present invention = it is not possible to limit the scope of the patent in this case. Equivalent modifications or variations made by persons familiar with the present invention in light of the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing a method for correcting an eccentric mold of a mold. Fig. 2 is a cross-sectional view showing a mold having an eccentric mold according to a first embodiment of the present invention. Figure 3 is a schematic view of an optical lens formed by the mold shown in Figure 2. Figure 4 is a schematic illustration of the plurality of first balls of the mold of Figure 2 taken out of the ball sleeve. Fig. 5 is a schematic view showing the mold of the mold shown in Fig. 2 after being corrected for deviation. Figure 6 is a cross-sectional view of a mold of the 2009 200919 mold having an eccentric mold core according to a second embodiment of the present invention. Figure 7 is a schematic view of an optical lens formed by the mold shown in Figure 6. * Figure 8 is a schematic diagram of the mold of the mold shown in Figure 6 after being corrected for deviation. [Major component symbol description] Mold 10, 20 First template 100, 200 Second template 110, 210 Mounting hole 112,: 142, 212 Inner wall 1122, 2122 First mold core 120, 220 First molding surface 122, 222 Two mold cores 130, 230 second molding surface 132, 232 outer wall 134, 234 ball sleeve 140 first ball 150, 250 ejector pin 160 second ball 170, 180, 270 optical lens 30, 50 first curved surface 32, 52 Two curved surfaces 34, 54 15