200538407 玖、發明說明： 【發明所屬之技術領域】 本發明是有關於一種成形裝置，特別是指一種在成形 時可對鏡片產生適當侷限及在組立時可自動導正玻璃硝 材的中心位置的玻璃模造成形裝置。 【先前技術】 圃 10 15 20 的模具，包含一套筒丨、一定位於該套筒1内而可供一玻 璃硝材4置放的下模仁2，及一可移動地套設於該套筒工 内的上模仁3。當該玻璃硝材4被放置於該下模仁2上後， 在鬲溫模造過程中該上模仁3可下移至與該套筒丨、該下 杈仁2配合形成一成形模穴5，則該玻璃硝材4即可在該 成形模穴5内被加壓成形為一玻璃鏡片6。 雖然，利用此種模具即可供該玻璃硝材4在該成形模 穴5内被加壓成形為該玻璃鏡片6，但是，由於在模造成 形過程中’該玻璃鏡片6的―斜周面6()1在該成形模穴$ 内並沒有受到任何實質上的侷限，而具有任意變形的自由 度，因此在後續的冷卻收縮過程中，該斜周自6〇1即可能 如圖3所示而發生往該玻璃鏡片6的一凹面6〇2或一凸面 6〇3收縮的情形，甚而是兩種收縮伴隨發生的情形，如此， 該玻璃鏡片6即可能發生形成雙重面或多重面的情形，或 發生無法藉由該上、下模仁3 3 2的表面面形來補償成形 為所需的表面面形的情形，而成為一不良品。 再者，如圖4、5所示，該玻璃石肖材4在置放過程中 5 200538407 或模具移載過程中（例如連續模的生產流程），均可能發 生其中心位置偏離該套筒1的中心軸線位置的情形，然 而，此種模具在將該玻璃硝材4成形為玻璃鏡片的過程 中，並無法將該玻璃硝材4的中心位置導正，因此，該玻 璃硝材4不僅往往會成形為一偏肉鏡片7而成為不良品， 且，該玻璃硝材4在成形過程中，亦往往會發生與該套筒 1黏著的問題’或受擠壓而侵人該套筒i與該下模仁2之 間’而導致咬模破壞模具的問題。 【發明内容】 因此，本發明之目的，即在提供一種在成形時可對鏡 片產生適當侷限及在組立時可自動導正玻璃硝材的中心 位置的玻璃模造成形裝置。 本發明玻璃模造成形裝置，是可用於將一玻璃硝材成 型為-玻璃鏡片，包含—下套筒、—上套筒、—下模仁， 及上杈仁。忒下套筒具有一第一周壁，及一由該第一周 壁所圍繞界定出的第一内孔，該第一周壁具有一第一抵接 該上套筒具有-第二周壁，及一由該第二周壁所圍繞 界疋出的第二内孔，該第二周壁具有一内周面及一朝向該 第：抵接面的第二抵接面，該第二内孔具有一由該内周面 ^導引面部所圍繞界定出的截頭圓錐段，該截頭圓錐段 辦月向^下套筒，且該截頭圓錐段的孔徑是朝該下套筒遞 增。该下模仁是套接於該m，具有-朝向該上套筒 :第-塑形面。該上模仁是套接於該第二内孔，而可在一 通離，亥下模仁的第—位置與一靠近該下模仁的第二位置 200538407 之間移動，該上模仁具有一朝向該第一塑形面的第二塑形 面，當該下、上套筒的第一、二抵接面互相抵接且該上模 仁移動至該第二位置時，該第二塑形面、該導引面部、誃 第一塑形面相配合可界定出一可供該玻璃硝材成形為嗲 玻璃鏡片的成形模穴。 【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 以下配合參考圖式之一較佳實施例的詳細說明中，將可清 楚的明白。 參閱圖6，本發明玻璃模造成形裝置的一較佳實施 例，疋可用於將一玻璃硝材100成型為一玻璃鏡片見 圖9)，該成形裝置包含：一下套筒1〇、一上套筒2〇、一 下模仁30，及一上模仁40。 該下套筒10具有一第一周壁u，及一由該第一周壁 11所圍繞界定出的第一内孔12。該第一周壁I!具有一第 一抵接面111，該第一内孔12具有一朝向該上套筒2〇的 大孔徑段121 ’及一相反於該上套筒2〇的小孔徑段丨22， 該第一抵接面111是界定於該小孔徑段122與該大孔徑段 121之間並朝向該上套筒2〇。 该上套筒20具有一第二周壁21、一由該第二周壁21 所圍繞界定出的第二内孔22，及一保護膜23。該苐二周 壁21具有一内周面211、一第二抵接面212、一相反於該 下套筒10的大徑部213，及一朝向該下套筒1〇且外徑對 應於該第一内孔11的大孔徑段丨21的孔徑的小徑部214， 200538407 5 10 15 該内周面211具有一導引面部2111、一與該導引面部2111 頂緣連接的套接面部2112，及一與該導引面部2111底緣 連接的組接面部2113,該第二抵接面212是形成於該小徑 部214朝向該下套筒10的底端上而朝向該第一抵接面 111。該第二内孔22具有一相反於該下套筒10的第一套 接段221、一孔徑小於該第一套接段221的孔徑的第二套 接段222、一界定於該第一、二套接段221、222之間的第 一肩部223、一由該套接面部2112所圍繞界定出且孔徑小 於該第二套接段222的第三套接段224、一界定於該第二、 三套接段222、224之間的第二肩部225、一由該導引面部 2111所圍繞界定出的截頭圓錐段226，及一由該組接面部 2113所圍繞界定出且朝向該下套筒1〇的組接段。該 截頭圓錐段226是朝向該下套筒1〇，且該截頭圓錐段2 = 的孔徑是朝該下套筒1〇遞增，該第三套接段⑽是與該 截頭圓錐段226具有最小孔徑的一端連接，該組接段m 是與該截頭圓錐段226具有最大孔徑的一端連接。該保護 膜23是鍍設於該套接面部2112、導引面部2ιιι與組接面 部2113上，且在本實施例中，該保護膜23是由具財磨耗 性、低摩擦係數與高抗高溫氧化性的材質製成。 該下模仁30是套接於該第一内孔12，並具有一可套 接於該第-内孔12的小孔徑段122内並延伸至該大孔徑 段121内的安裝部3卜一與該安裝部31連接而可抵接於 該第-周壁U的一底端面上的限位部32，及一形成於該 安裝部31朝向該上套筒2G的—端上的第—塑形面3卜 20 200538407 該上模仁40是可移動地套接於該第二内孔22， 口 在一遠離該下模仁30的第一位置（見圖8)與一靠近 板仁30的第二位置（見圖9)之間移動。該上模仁具 5 10 15 20 有一可套接於該第二内孔22的第一套接段221内的第二 安裝部4卜一與該第一安裝冑41連接而可套接於該第二 内孔22的第二套接段222内的第二安裝部仏、_與該: 二安裝部42連接而可套接於該第二内孔22的第三套=杧 ㈣内的第三安裝部43、一與該第三安裝部43連接而:200538407 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a forming device, particularly to a glass that can appropriately limit the lens during forming and can automatically guide the center position of the glass nitrate material during assembly. Moulding device. [Prior art] The mold of the garden 10 15 20 includes a sleeve 丨, a lower mold core 2 which must be located in the sleeve 1 and can be placed by a glass nitrate 4 and a sleeve that is movably sleeved on the sleeve Upper mold core in the work 3. After the glass nitrate material 4 is placed on the lower mold core 2, the upper mold core 3 can be moved down to cooperate with the sleeve 丨 and the lower branch core 2 to form a forming mold cavity 5 during the warm-temperature molding process. Then, the glass nitrate material 4 can be pressure-molded into a glass lens 6 in the forming cavity 5. Although the glass nitrate material 4 can be pressure-molded into the glass lens 6 in the molding cavity 5 by using such a mold, the 'sloping peripheral surface 6 of the glass lens 6 ( ) 1 in the forming cavity $ is not subject to any substantial limitations, but has any degree of freedom of deformation. Therefore, in the subsequent cooling and shrinking process, the oblique cycle may be as shown in FIG. 3 from 601. When the glass lens 6 shrinks to a concave surface 602 or a convex surface 603, or even two types of shrinkage accompany it, the glass lens 6 may form a double-sided surface or a multi-sided surface. Or it may happen that the surface shapes of the upper and lower mold cores 3 3 2 cannot compensate for the desired surface shape and become a defective product. Furthermore, as shown in Figs. 4 and 5, the glass stone material 4 may be shifted from the center of the sleeve 1 to the center of the sleeve 1 during the placement process 5 200538407 or the mold transfer process (such as the production process of a continuous mold). Axis position, however, in the process of forming the glass nitrate material 4 into a glass lens, the mold cannot correct the center position of the glass nitrate material 4; therefore, the glass nitrate material 4 is often not only formed into a partial The meat lens 7 becomes a defective product, and in the forming process, the glass nitrate material 4 often also has a problem of adhesion with the sleeve 1 'or is squeezed to invade the sleeve i and the lower mold core 2. Time 'and cause the mold to damage the mold. [Summary of the Invention] Therefore, an object of the present invention is to provide a glass mold forming device that can appropriately limit the lens during forming and can automatically guide the center position of the glass nitrate material when assembled. The glass mold forming device of the present invention can be used to shape a glass nitrate material into a glass lens, which includes-a lower sleeve,-an upper sleeve,-a lower mold kernel, and an upper branch kernel. The lower sleeve has a first peripheral wall and a first inner hole defined by the first peripheral wall, the first peripheral wall has a first abutting the upper sleeve with a second peripheral wall, And a second inner hole protruding from the boundary surrounded by the second peripheral wall, the second peripheral wall having an inner peripheral surface and a second abutting surface facing the first: abutting surface, the second inner hole having a A frusto-conical section defined by the inner peripheral surface and the guiding surface surrounds the truncated cone section and the aperture of the frusto-conical section increases toward the lower sleeve. The lower mold core is sleeved on the m, and has -toward the upper sleeve: the first shaping surface. The upper mold core is sleeved on the second inner hole, and can be moved between a first position of the lower mold core and a second position 200538407 near the lower mold core. The upper mold core has a The second shaping surface facing the first shaping surface, when the first and second abutment surfaces of the lower and upper sleeves abut against each other and the upper mold core moves to the second position, the second shaping surface The combination of the surface, the guide surface, and the first shaping surface of the cymbal can define a molding cavity for the glass nitrate material to be formed into a cymbal glass lens. [Embodiment] The foregoing and other technical contents, features, and effects of the present invention will be clearly understood in the following detailed description of a preferred embodiment with reference to the accompanying drawings. Referring to FIG. 6, a preferred embodiment of a glass molding device according to the present invention can be used to form a glass nitrate material 100 into a glass lens (see FIG. 9). The forming device includes a lower sleeve 10 and an upper sleeve. 20. Lower mold core 30 and upper mold core 40. The lower sleeve 10 has a first peripheral wall u and a first inner hole 12 defined by the first peripheral wall 11. The first peripheral wall I! Has a first abutting surface 111, the first inner hole 12 has a large aperture section 121 ′ facing the upper sleeve 20 and a small aperture opposite to the upper sleeve 20 In section 22, the first abutment surface 111 is defined between the small-aperture section 122 and the large-aperture section 121 and faces the upper sleeve 20. The upper sleeve 20 has a second peripheral wall 21, a second inner hole 22 defined by the second peripheral wall 21, and a protective film 23. The second peripheral wall 21 has an inner peripheral surface 211, a second abutting surface 212, a large diameter portion 213 opposite to the lower sleeve 10, and an outer diameter corresponding to the first sleeve 10 and an outer diameter corresponding to the first sleeve. A large-diameter section 21 of the inner hole 11 and a small-diameter portion 214 of the aperture 21, 200538407 5 10 15 The inner peripheral surface 211 has a guide surface 2111, a socket surface 2112 connected to the top edge of the guide surface 2111, And an assembling surface 2113 connected to the bottom edge of the guide surface 2111, the second abutting surface 212 is formed on the bottom end of the small diameter portion 214 toward the lower sleeve 10 and faces the first abutting surface 111. The second inner hole 22 has a first socket section 221 opposite to the lower sleeve 10, a second socket section 222 having a smaller diameter than that of the first socket section 221, and a second socket section 222 defined in the first, A first shoulder 223 between the two socket sections 221, 222, a third socket section 224 defined by the socket surface 2112 and having a smaller aperture than the second socket section 222, and a third socket section 224 A second shoulder 225 between two and three sets of connecting sections 222, 224, a frusto-conical section 226 defined by the guide surface 2111, and a group of connecting sections 2113 defining and facing The assembling section of the lower sleeve 10. The frusto-conical segment 226 is oriented toward the lower sleeve 10, and the aperture of the frusto-conical segment 2 = is increased toward the lower sleeve 10, and the third socket segment ⑽ is connected to the frusto-conical segment 226. The one end with the smallest aperture is connected, and the assembly section m is connected with the end with the largest aperture of the frusto-conical section 226. The protective film 23 is plated on the socket surface 2112, the guide surface 2 ιιm and the assembling surface 2113. In this embodiment, the protective film 23 is made of abrasion, low friction coefficient and high temperature resistance. Made of oxidizing material. The lower mold core 30 is sleeved on the first inner hole 12 and has a mounting portion 3 that can be socketed in the small-aperture section 122 of the first-inner hole 12 and extends to the large-aperture section 121. A limiting portion 32 connected to the mounting portion 31 and capable of abutting on a bottom end surface of the -peripheral wall U, and a first shaping formed on the -end of the mounting portion 31 facing the upper sleeve 2G. Surface 3, 20, 200538407 The upper mold core 40 is movably sleeved on the second inner hole 22, and the mouth is at a first position far from the lower mold core 30 (see FIG. 8) and a first position close to the plate core 30. Move between the two positions (see Figure 9). The upper mold core 5 10 15 20 has a second mounting portion 4 that can be socketed in the first socket section 221 of the second inner hole 22 and is connected to the first mounting bracket 41 and can be socketed on the The second mounting portion 内 in the second sleeve section 222 of the second inner hole 22 is connected to the second mounting portion 42 and can be sleeved on the third sleeve of the second inner hole 22 = the first in the 杧 ㈣ Three mounting portions 43 and one are connected to the third mounting portion 43 and:
伸至該第二内孔22的截頭圓錐段226内的成形部以，及 一形成於該成形部44朝向該第一塑形面33的一端上的第 二塑形面4 5。 ' 如園b、7所示，實際進行成形操作時，是分別將該 下套筒10與該下模仁3〇組立及將該上套筒2〇與該上S 仁40組立，並將該玻璃硝材1〇〇放置於該下模仁的第 一塑形面33上’然後，如圖7、8所示，即可以藉由人工 或機械夾爪（圖未示）抓取該上套筒2〇的大徑部M3的 頂端’而將該上套冑20料徑部214下移組入該下套筒φ 1〇的第一内孔12的大孔徑段121内，在此過程中，該上 模仁40的第二塑形面45會抵止於該玻璃硝材1〇〇的頂面 上，而使該上模仁40停留於遠離該下模仁3〇的第一位 置，而，當该上套筒20下移至該下、上套筒1〇、2〇的第 一、二抵接面111、212互相抵接時，該下模仁30的安裝 部31會延伸組入該第二内孔22的組接段227内，而使該 第一塑形面33位於該組接段227内，而該導引面部2Ui 9 200538407 則會與該玻璃硝材100的頂周緣接觸。此後，如圖9所示， 在進行高溫模造的過程中，當該上模仁40從該第一位置 被下麼至靠近該下模仁30的第二位置時，該第二塑形面 45、該導引面部21U、該第一塑形面33相配合可界定出 成形杈八50，如此，该第二塑形面45即可在該成形模 穴50内將軟化的玻璃硝材1〇〇加壓成形為該玻璃鏡片 200 〇 此外’如圖10、11、12所示，當該玻璃硝材100在 置放過程中或模具移載過程中（例如連續模的生產流 程），發生中心位置偏離該下套筒1〇的中心軸線位置的情 形時，由於該上套筒20的内周面211形成有錐面狀的導引 面部2111，因此，在該上套筒2〇下移的過程中，該導引 面邛2111可與該玻璃硝材1〇〇的頂周緣接觸，並藉側向力 將該玻璃硝材100朝該下套筒1〇的中心軸線位置推移， 而將該玻璃硝材100導正至該下套筒1〇的中心軸線位置 上或極度接近該下套筒10的中心軸線的位置上，如此， 該玻璃硝材100即可供在後續的高溫模造過程中，被加壓 成形為如圖9所示的玻璃鏡片2〇〇。 經由以上的說明，可再將本發明的優點歸納如下： 一、本發明藉由該第二塑形面45、該導引面部2111、 該第一塑形面33可界定出具侷限性的成形模穴5〇，因此， 在高溫模造過程中，當軟化的玻璃硝材1〇〇受壓而往外擠 出時，該導引面部2111可迫使玻璃硝材1〇〇的周緣部份 沿其錐度向下擴展而轉印形成為該玻璃鏡片2〇〇的一斜周 10 200538407 面210 (見圖9)，如此，在後續的冷卻收縮過程中，由於 該導引面部2111仍與該斜周面21〇保持接觸，而使該斜 周面210受到實質上的侷限，因此，本發明不僅可降低該 玻璃鏡片2GG冷卻收縮的自由度’更可有效防止該玻璃鏡 片200在冷卻收縮過程中產生無法控制的收縮變形。 二、本發明在該下、上套筒1〇、2〇的組接過程中， :用該上套筒20的導引面部2111可自動導正偏離該下套 筒10的中心軸線位置的玻璃硝材1〇〇，而迫使該玻璃硝材 1〇〇移動至適當的模造成形位置上，如此，即便該玻璃确 材1〇〇在置放過程中或模具移載過程中，發生中心位置偏 離的情形時，本發明亦可自動將該玻璃硝材1〇〇的中心位 置導正，因此，本發明可有效避免該玻璃硝材1〇〇因成形 位置不正而成形為一偏肉鏡片，而大幅提高產品良率。 歸納上述，本發明之玻璃模造成形裝置，不僅在玻璃 鏡片冷卻收縮時可對玻璃鏡片產生適當的侷限作用，而可 有效防止玻璃鏡片產生無法控制的收縮變形，並可在套筒 、、且立時自動導正玻璃硝材的中心位置，以避免玻璃硝材成 形為不良的偏肉鏡片，故確實能達到發明之目的。 惟以上所述者，僅為本發明之較佳實施例而已，當不 月匕以此限疋本發明實施之範圍，即大凡依本發明申請專利 範圍及創作說明書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。 11 200538407 【囷式簡單說明】 圖1是習知一種玻璃成形模具與一玻璃硝材的組合剖 視圖； 圖2是一類似圖1的視圖，說明該玻璃硝材被加壓成 形為一玻璃鏡片； 圖3是該玻璃鏡片冷卻收縮的變形示意圖； 圖4是一類似圖1的視圖，說明該玻璃硝材的中心位 置偏離該模具的中心軸線位置； 圖5是一類似圖2的視圖，說明該玻璃硝材被加壓成_ 形為一偏肉鏡片； 圖6是本發明之玻璃模造成形裝置一較佳實施例與一 玻璃硝材的剖視圖； 圖7是一類似圖6的視圖，說明該較佳實施例的一上 套筒下移而與一下套筒組接； 圖8是一類似圖6的視圖，說明該較佳實施例的上套 筒下移而與該下套筒組接至定位； 圖9是一類似圖6的視圖，說明該較佳實施例的一上_ 模仁下移而將該玻璃硕材加壓成形為一玻璃鏡片； 圖10是一類似圖6的視圖，說明該玻璃硝材的中心 位置偏離該下套筒的中心軸線位置； 圖11是一類似圖10的視圖，說明該上套筒下移至與 該玻璃硝材的頂周緣接觸；及 圖12是一類似圖1〇的視圖，說明該上套筒下移至將 .該玻璃梢材導正。 12 25 200538407 【圖式之主要元件代表符號簡單說明】 1…* 套筒 2112 · 套接面部 2 * * * 下模仁 2113 · 組接面部 3 * — 上模仁 212 · 弟二抵接面 ♦ 玻璃硝材 213 * 大徑部 5…* 成形模穴 214 · 小徑部 6 * * * 玻璃鏡片 22 · · 第二内孔 601 · 斜周面 221 * 第一套接段 602 · 凹面 222 · 第二套接段 603 · 凸面 223 · 第一肩部 Ί…、 偏肉鏡片 224 · 第三套接段 100 · 玻璃硝材 225 · 第二肩部 200 · 玻璃鏡片 226 · 截頭圓錐段 210 * 斜周面 227 · 組接段 10 . · 下套筒 23… 保護膜 11… 第一周壁 30 · · 下模仁 111 · 第一抵接面 31 · · 安裝部 12 · · 第一内孔 32 · · 限位部 121 · 大孔徑段 33… 第一塑形面 122 · 小孔徑段 40 · · 上模仁 20… 上套筒 41 ·. 第一安裝部 21… 第二周壁 42 · · 第二安裝部 211 · 内周面 43 ·. 第三安裝部 2111 · 導引面部 44 · · 成形部 13 200538407 •成形模穴 45… 第二塑形面 50 · 14A shaped portion extending into the frusto-conical section 226 of the second inner hole 22, and a second shaped surface 45 formed on an end of the shaped portion 44 facing the first shaped surface 33. 'As shown in the circles b and 7, when the forming operation is actually performed, the lower sleeve 10 is assembled with the lower mold core 30 and the upper sleeve 20 is assembled with the upper S core 40, respectively. The glass nitrate 100 is placed on the first molding surface 33 of the lower mold core. Then, as shown in FIGS. 7 and 8, the upper sleeve can be grasped by manual or mechanical grippers (not shown). The top end of the large diameter portion M3 of 20 ′ and the upper sleeve 20 with the material diameter portion 214 are moved down and assembled into the large diameter section 121 of the first inner hole 12 of the lower sleeve φ10. In the process, The second shaping surface 45 of the upper mold core 40 will abut against the top surface of the glass nitrate 100, so that the upper mold core 40 stays at a first position away from the lower mold core 30, and When the upper sleeve 20 moves down to the first and second abutment surfaces 111 and 212 of the lower and upper sleeves 10 and 20, the mounting portion 31 of the lower mold core 30 will extend into the The second inner hole 22 is in the assembly section 227, so that the first shaping surface 33 is located in the assembly section 227, and the guide surface 2Ui 9 200538407 is in contact with the top periphery of the glass nitrate 100. Thereafter, as shown in FIG. 9, during the high-temperature molding process, when the upper mold core 40 is lowered from the first position to a second position close to the lower mold core 30, the second shaping surface 45 The combination of the guide surface 21U and the first shaping surface 33 can define a forming branch 80. In this way, the second shaping surface 45 can soften the glass nitrate material 100 in the forming cavity 50. Press forming into the glass lens 200. In addition, as shown in Figs. 10, 11, and 12, when the glass nitrate 100 is placed or the mold is being transferred (such as the production process of a continuous mold), the center position is deviated. In the case of the center axis position of the lower sleeve 10, since the inner peripheral surface 211 of the upper sleeve 20 is formed with a tapered guide surface 2111, the upper sleeve 20 is moved downward. The guide surface 邛 2111 can contact the top peripheral edge of the glass nitrate 100, and move the glass nitrate 100 toward the center axis position of the lower sleeve 10 by a lateral force, and guide the glass nitrate 100. At the position of the central axis of the lower sleeve 10 or close to the central axis of the lower sleeve 10 In this way, the glass nitrate 100 can be used in the subsequent high-temperature molding process to be pressed into a glass lens 200 as shown in FIG. 9. Through the above description, the advantages of the present invention can be summarized as follows: 1. In the present invention, the second shaping surface 45, the guide surface 2111, and the first shaping surface 33 can define a limited forming mold. Therefore, during the high-temperature molding process, when the softened glass nitrate 100 is pressed and extruded outward, the guide surface 2111 can force the peripheral portion of the glass nitrate 100 to expand downward along its taper. The transfer lens is formed as a slanted perimeter 10 200538407 surface 210 of the glass lens 200 (see FIG. 9). In this way, during the subsequent cooling and shrinking process, since the guide surface portion 2111 is still maintained with the slanted peripheral surface 21 ° Contact, so that the oblique peripheral surface 210 is substantially limited. Therefore, the present invention can not only reduce the degree of freedom of cooling and shrinking of the glass lens 2GG, but also effectively prevent the glass lens 200 from generating uncontrollable shrinkage during the cooling and shrinking process. Deformation. 2. In the assembling process of the lower and upper sleeves 10 and 20 of the present invention, the guiding surface 2111 of the upper sleeve 20 can automatically guide the glass deviating from the center axis position of the lower sleeve 10 The nitrate material 100 is forced, and the glass nitrate material 100 is forced to move to an appropriate molding position. In this way, even if the glass material 100 is placed or the mold is moved, the center position deviation occurs. At this time, the present invention can also automatically guide the center position of the glass nitrate material 100. Therefore, the present invention can effectively prevent the glass nitrate material 100 from being formed into a partial meat lens due to the incorrect forming position, thereby greatly improving the product quality. rate. To sum up, the glass mold forming device of the present invention not only can appropriately limit the glass lens when the glass lens is cooled and shrunk, but can effectively prevent the glass lens from generating uncontrollable shrinkage and deformation. Automatically guide the center position of the glass nitrate to prevent the glass nitrate from forming into a bad partial lens, so it can indeed achieve the purpose of the invention. However, the above are only the preferred embodiments of the present invention. When this is used, the scope of implementation of the present invention is limited, that is, the simple equivalent changes made according to the scope of the patent application and the contents of the creative description of the present invention. And modifications are still within the scope of the invention patent. 11 200538407 [Brief description of simple style] Fig. 1 is a conventional sectional view of a glass forming mold and a glass nitrate; Fig. 2 is a view similar to Fig. 1 showing that the glass nitrate is pressed into a glass lens; Fig. 3 It is a schematic diagram of the deformation of the glass lens during cooling shrinkage. FIG. 4 is a view similar to FIG. 1 showing that the center position of the glass nitrate is deviated from the center axis position of the mold. FIG. 5 is a view similar to FIG. Figure 6 is a cross-sectional view of a preferred embodiment and a glass nitrate of the glass molding device of the present invention. Figure 7 is a view similar to Figure 6 illustrating the preferred embodiment. An upper sleeve is moved down to connect with the lower sleeve group; FIG. 8 is a view similar to FIG. 6, illustrating that the upper sleeve of the preferred embodiment is moved down and connected to the lower sleeve group in position; FIG. 9 is A view similar to FIG. 6 illustrates that an upper mold core of the preferred embodiment is moved downward to press the glass master material into a glass lens. FIG. 10 is a view similar to FIG. 6 illustrating the glass nitrate material. The center position is offset from the lower sleeve 11 is a view similar to FIG. 10, illustrating that the upper sleeve is moved down to contact the top peripheral edge of the glass nitrate; and FIG. 12 is a view similar to FIG. 10, illustrating the lower sleeve Move to straighten the glass tip. 12 25 200538407 [Simplified explanation of the main symbols of the drawings] 1 ... * sleeve 2112 · socket face 2 * * * lower mold core 2113 · assembly surface 3 * — upper mold core 212 · younger abutting surface ♦ Glass nitrate 213 * Large-diameter part 5 ... * Molding cavity 214 · Small-diameter part 6 * * * Glass lens 22 · · Second inner hole 601 · Inclined peripheral surface 221 * First set of joints 602 · Concave surface 222 · Second Socket section 603 · Convex 223 · First shoulder Ί ..., Partial lens 224 · Third socket section 100 · Glass nitrate 225 · Second shoulder 200 · Glass lens 226 · Frustum cone section 210 * Inclined peripheral surface 227 · Assembly section 10. · Lower sleeve 23 ... Protective film 11 ... First round wall 30 · · Lower mold core 111 · First abutment surface 31 · · Mounting section 12 · · First inner hole 32 · · Limit Position 121 · Large-aperture section 33 ... First shaping surface 122 · Small-aperture section 40 · · Upper mold core 20 ... Upper sleeve 41 ·. First mounting section 21 ... Second peripheral wall 42 · · Second mounting section 211 · Inner peripheral surface 43 · Third mounting portion 2111 · Guide surface portion 44 · · Forming portion 13 200538407 45 ... second cavity mold shaping surface 50 · 14