200932487 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種模具，特別是指—種可消除毛邊 之塑膠鏡片的成形模具。 【先前技術】 的成形模具1 如圖1所示，習知一種用於成形塑膠鏡片 ，具有二分模面101，及一模穴102。 〇200932487 IX. Description of the Invention: [Technical Field] The present invention relates to a mold, and more particularly to a molding die for a plastic lens capable of eliminating burrs. [Prior Art] Forming Mold 1 As shown in Fig. 1, a conventional plastic lens is known which has a bisection surface 101 and a cavity 102. 〇
1合模後，塑料 穴102内，而成 如此’如圖1、2所示，當該成形模具 2即可經由一進洗流道（圖未示）射入該模 形為一塑膠鏡片3。 雖然，該成形模具i可供塑料2射出成形為該塑膠鏡 片3,但是，在實際使用時，此種成形模具丨卻具有以下的 缺失： 由於該成形模具1 一般均由剛性材質（例如鋼材）製 成，因此，當該成形模具1合模時’該等分模面101之間 並無法完全密合，導致塑料2在射出成形時往往會滲入該 等分模面101之間，造成該塑膠鏡片3在周面上會形成多 數不規則的毛邊301。該等毛邊301往往會造成該塑膠鏡片 3在組入鏡筒時的干擾，且，若該等毛邊3〇1在鏡頭組中脫 落於鏡面上’更會造成鏡頭組解像不良的問題，影響鏡頭 組的成品良率。 【發明内容】 因此’本發明之一目的，即在提供一種可防止塑料於 射出成形時滲入分模面之間的可消除毛邊之塑膠鏡片的成 5 200932487 形模具。 、，本發月之另一目的，即在提供一種可防止塑料於射出 成形夺渗入刀模面之間的可消除毛邊之塑膠鏡片的製造方 法。 本發明之再—日Μ „ , 目的’即在k供一種不會產生毛邊的可 消除毛邊之塑膠鏡片。 Ο 〇 本發明可消除毛邊之塑膠鏡片的成形模具，包含一第 *模八單％、_第二模具單元，及至少—阻料件。該第一 模具單元具有—第-模座，及至少-設置於該第一模座内 模4 "亥第一杈座具有一第一分模面，該第一模仁 帛成开乂面。該第二模具單元具有-第二模座，及 至少一設置於該第二模座内的第二模仁，it第二模座具有 -朝向該第-分模面的第二分模面，該第二模仁具有一朝 ° 乂第《形面的第二成形面’該第二模具單元可沿一軸 向相對於”亥第一模具單元在一分模位置與一合模位置之間 移動’當該第二模具單元在該分模位置時，該第一、二分 模面是互相遠離’當該第二模具單元在該合模位置時，該 % -刀模面疋互相抵接，該第一、二成形面之間可定 義出-成形模穴。該阻料件是設置於該第一、二分模面之 間，該阻料件是可彈性變形，並具有一圍繞該軸向設置的 周面β β第_模具單元在該合模位置時，該阻料件是 被擠壓變形至該内周面延伸於該第一、二成形面之間，而 凸伸於該成形模穴内’當該第二模具單元在該分模位置時 ’該阻料件是彈性恢復至該内周面退出該成形模穴。 200932487After the mold clamping, the plastic pocket 102 is formed as shown in FIG. 1 and FIG. 2, and the molding die 2 can be injected into the mold into a plastic lens 3 through a washing passage (not shown). . Although the forming mold i can be used for injection molding the plastic 2 into the plastic lens 3, in actual use, the forming mold has the following drawbacks: since the forming mold 1 is generally made of a rigid material (for example, steel). Therefore, when the forming mold 1 is closed, the partitioning faces 101 are not completely adhered together, so that the plastic 2 tends to penetrate between the split mold faces 101 during injection molding, resulting in the plastic. The lens 3 forms a plurality of irregular burrs 301 on the circumferential surface. The burrs 301 tend to cause interference of the plastic lens 3 when it is incorporated into the lens barrel, and if the burrs 3 〇 1 fall off the mirror surface in the lens group, the problem of poor lens group resolution may be affected. The finished product yield of the lens group. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a plastic mold for preventing the burr from interfering between the parting surfaces of the plastic during injection molding. Another object of the present month is to provide a method of manufacturing a plastic lens which can prevent the plastic from being punctured between the die faces by the injection molding. The invention of the present invention „, the purpose of providing a plastic lens which can eliminate burrs without burrs. Ο 〇 The invention can eliminate the forming mold of the plastic lens of the burr, including a , a second mold unit, and at least a resistance member. The first mold unit has a first mold base, and at least - is disposed in the first mold base mold 4 " a first mold core having a second mold base, and a second mold core disposed in the second mold base a second parting surface facing the first partial mold surface, the second mold core having a second forming surface facing the second side, the second mold unit being axially opposite to the a mold unit is moved between a split mode position and a mold clamping position. When the second mold unit is in the split mold position, the first and second mold faces are away from each other when the second mold unit is in the joint In the position of the mold, the %-die faces are abutted against each other, and a forming die can be defined between the first and second forming faces hole. The blocking member is disposed between the first and second partial mold faces, the resisting member is elastically deformable, and has a circumferential surface β β disposed around the axial direction, and the mold unit is in the clamping position. The resisting member is extruded and deformed until the inner peripheral surface extends between the first and second forming surfaces, and protrudes into the forming cavity. 'When the second die unit is in the splitting position, the resistance is The material member is elastically restored to the inner peripheral surface to exit the forming cavity. 200932487
;本發明可消除毛邊之塑膠鏡片的製造方法，包含：（A )準備帛帛具單元、一第二模具單元，及至少一阻料 件’該第一模且果开且古 ^ /、早 v、有—第—模座，及至少一設置於該 第一模座内的第—磁> _ ^ 弟模仁，該第一模座具有一第一分模面， s亥第一模仁具有_笛一,, 一 啕第成形面，該第二模具單元具有一第 4座’及至少—設置於該第二模座内的第二模仁，該第The method for manufacturing a plastic lens for eliminating burrs according to the present invention comprises: (A) preparing a cookware unit, a second mold unit, and at least one resisting member 'the first mold and being open and ancient ^ /, early v. having a first die holder, and at least one first magnetic member disposed in the first die holder, the first die holder having a first partial die face, the first die face The enthalpy has a first forming surface, and the second mold unit has a fourth seat 'and at least a second mold core disposed in the second mold base, the first
'八有朝向該第一分模面的第二分模面，該第二模 仁具有-朝向該第一成形面的第二成形面，該阻料件是設 置於該第—分模面之間，該阻料件是可彈性變形，並 :有一圍繞一軸向設置的内周面。⑻將該第一、二模具 早兀合模’使該第一、二成形面之間定義出一成形模穴， 並使違阻料件被擠壓變形至該内周面延伸於該第—、二成 $面之間而凸伸於該成形模穴内。（C )將塑料射入該成 形模穴内，成形為一塑膠鏡片e(D)將該第一、二模具單 元開模’使該阻料件彈性恢復至該内周面退出該成形模穴 〇 本發明可消除毛邊之塑膠鏡片，包含一上形面、一下 /面及外周面。該下形面是沿一軸向相反於該上形面 。該外周面是連接於該上、下形面之間，該外周面具有一 繞S玄軸向設置且沿徑向内凹的分模環槽。 【實施方式】 、有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一較佳實施例的詳細說明中，將可清 楚的明白。 ’.. 7 200932487 參閱圖6、7,為本發明可消除毛邊之塑膠鏡片的製造 方法的較佳實施例所製作出的一塑膠鏡片2〇〇,該鏡片2〇〇 包含一上形面21〇、一下形面220，及一外周面23〇。該下 形面220是沿一轴向χ相反於該上形面21〇。該外周面謂 j連接於該上、下形面21〇、22()之間，該外周面23〇具有 Ο Ο ^ 240 繞该轴向X設置並與該切口部240兩側連 接的衣面250 ’及—繞該軸向χ形成於該環面部⑽上且 沿徑向内凹的分模環槽26〇。 參« 3〜6 ’本發明可消除毛邊之塑 法的較佳實施例包含以下步驟： ^ 护機：：去如圖3、4所示，準備一組可裝設於-射出成 ^上的成形模具，該成形模具包含：一第一 ='1〇、一第二模具單元2〇，及-阻料件3〇。在本實 施例中，該第一槿 Λ 下方 、’、兀〇是設置於該第二模具單元20 該第-、二槿Ρ Α用臥式射出成形機時， ^ …早7° 1〇、20即可改為左、右配置。 s玄第一模具單元1〇 第—模座 ’、一第一模座11，及一設置於該 弟模座11内的第—模仁12〇 該第一模座11且有一笛 _ 設置於哕第'、第—槟板13、—第一型板14、數 又第—模板13與 -與該第-模仁12連 14之間的模塊15，及 一第一成形面121。 桿16。該第一模仁12具有 該第一模板13具有一釦 分模面131 ' 一沪、 〇该第二模具單元20的第一 〜肖X設置而可供該第一模仁12裝設 8 200932487 向X圍^132’及一凹設於該第一分模面131上且繞該軸 中，笛：第一模孔132的第一容置環槽133。在本實施例 面—分模面131具有—環繞該第-模孔132的凹陷 二34’及—從該凹陷面部134的外周緣朝外、朝上延伸 >斜面部135，該凹陷面部134與該傾斜面部m配合 二=該第一容置環槽133。此外’該第-模板U也具有 可供塑料100射入的進澆流道136。 Ο Ο = 2()具有—第二模座21’及—設置於該 弟—模座20内的第二模仁22。 描X第-杈座21具有-第二模板23，及一裝設於該第二 - Γ Μ上的第二型板24。該第二模仁22具有—朝向該第 成形面121的第二成形面221。 該第二模板23具有一朝向該第一分模面i3i的第二分 :面23卜一沿該軸向χ設置而可供該第二模仁22裝設的 第-模孔232,及-凹設於該第二分模面23ι上且繞該轴向 X圍繞該第二模孔232的第二容置環槽233。在本實施例中 ’该第二分模Φ 231具有一環繞該第二模孔232的凹陷面 部234 ’及-從該凹陷面部234的外周緣朝外、朝下延伸出 ㈣斜面部235,該凹陷面部234與該傾斜面部235配合界 定出該第二容置環槽233。 該第二模具單元20可沿該軸向χ相對於該第一模具單 疋10在-分模位置（見圖3)與—合模Μ (見圖5)之 間移動，當該第二模具單元20在該分模位置時，該第一、 二分模面131、231是互相遠離。 9 200932487 在本實施例中，該第一、二模具單元10、20在進行射 出成形作業時的一工作溫度是介於12(rc.〜139t>c，且，該 第一、二模座11、21的材質為鋼材，該第一、二模座 21的維克氏硬度（Hv)為550。 該阻料件30是設置於該第一、二分模面131'231之 間，該阻料件30具有一圍繞該軸向χ設置的内周面Η、— 相反於該内周面31的外周面32、一連接於該内、外周面 Ο Ο Μ '32之間的第-端面33、—相反於該第—端面33的第 二端面34,及一從該内周面31延伸至該外周面32並貫穿 該第-、二端面33、34$進堯缺口 35，該進洗缺口 ^是 對應於該進澆流道136。 在本實施例中’該阻料件3〇的材質為可彈性變形的鎳 皱鈦合金（Ni-Be-Ti)，該阻料件3〇的溶點是不小於3耽 ，該阻料件30的維克氏硬度是不大於25()。 另外’錢料件3G的材質也可採用可彈性變形的氟橡 膠（FPM…般稱為特種橡膠），例如心6或F26_4i，該 阻料件30的熱分解溫度是不小於峨，該阻料件3〇的維 克氏硬度是介於63〜75。 該阻料件30是設置於該第一容置環槽ΐ33 β，當該第 -模具單元20在該分模位置時，該内周面31是位於 —模孔m外，該外周面32是抵持於該凹陷面们 傾斜面部⑴的銜接處，該第—端面以該軸向χ上是高 於該第一分模面13.1。 驟 :如圖5所示，將該第二模具單元2〇移動至該 10 200932487 合模位置，使該第一、二模具單元10、20合模，此時，該 第一、二分模面131、231是互相抵接，該第一、二成形面 121、221之間可定義出一成形模穴4()，且，該阻料件如 是被該第一、二分模面131、231擠壓變形，致使該内周面 31沿徑向.朝内延伸於該第一、二成形面121、221之間，而 凸伸於該成形模穴40内。 步驟三：如4、5所示，將塑料10〇經該進澆流道136 〇 、該進澆缺口 35該射入該成形模穴40内，而成形為該塑 膠鏡片200。該鏡片2〇〇形成對應該第二成形面221的上形 面210、對應该第一成形面121的下形面22〇，及對應該一 一模孔132、232的外周面230。該外周面230並形成對 應該阻料件30的内周面31的分模環槽26〇。 步驟四：如圖6所示，將該第二模具單元2〇移動至該 開模位置，使該第一、二模具單元1〇、2〇開模，此時，該 阻料件30不再受到擠壓，該阻料件3〇即會彈性恢復成未 ) 冑屢的形狀與尺寸，使該内周面31退出該成形模穴4〇 (見 圖5 )’而位於該第一模孔132外。 步驟五.如圖6所示，使該頂出桿16向上頂出該第一 拉仁12，而使该第一模仁12帶動該塑膠鏡片向上通過 遠阻料件30 ’進而脫離該第一模座11的第一模板13。 此後，如圖7所示’即可對該塑膠鏡片2〇〇進行後續 勺J切作業，將該塑膠鏡片2〇〇澆口處的一流道部27〇切 除，而形成該切口部240 (俗稱D_cut)。 ‘ 、、-里由以上的說明，可再將本發明的優點歸納如下： 11 200932487 -、由於該阻料件30是以可彈性變形的材質製成，而 非剛性材質’因此，當該第二模具單元2()移動至該合模位'8 has a second parting surface facing the first parting surface, the second part has a second forming surface facing the first forming surface, and the resisting member is disposed on the first parting surface The resistance member is elastically deformable and has an inner circumferential surface disposed around an axial direction. (8) the first and second molds are clamped early to define a forming cavity between the first and second forming faces, and the damaging material is pressed and deformed until the inner peripheral surface extends to the first Between the two sides, the surface protrudes into the forming cavity. (C) injecting plastic into the forming cavity, forming a plastic lens e (D) to open the first and second die units to elastically restore the resisting member to the inner peripheral surface and exit the forming cavity. The invention can eliminate the burr plastic lens and comprises an upper surface, a lower surface and a peripheral surface. The lower profile is opposite the upper profile along an axial direction. The outer peripheral surface is connected between the upper and lower surfaces, and the outer peripheral mask has a split ring groove disposed around the S-axis and recessed in the radial direction. The above and other technical contents, features, and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments. '.. 7 200932487 Referring to FIGS. 6 and 7 , a plastic lens 2 制作 produced by a preferred embodiment of the method for manufacturing a burr-removing plastic lens according to the present invention includes an upper surface 21 . 〇, the underlying surface 220, and an outer peripheral surface 23〇. The lower surface 220 is opposite to the upper surface 21〇 along an axial direction. The outer peripheral surface is connected between the upper and lower surfaces 21〇, 22(), and the outer peripheral surface 23〇 has a clothing surface which is disposed around the axial direction X and is connected to both sides of the cutout portion 240. 250' and - a parting ring groove 26 formed on the annular surface portion (10) and recessed in the radial direction. The preferred embodiment of the invention for eliminating the burr of the present invention comprises the following steps: ^ Guarding machine:: as shown in Figures 3 and 4, preparing a set of mountable-to-ejects A forming mold comprising: a first = '1 〇, a second mold unit 2 〇, and a refractory member 3 〇. In this embodiment, when the first 槿Λ is lower than ', 兀〇 is set in the second mold unit 20, the first and second 卧 horizontal injection molding machine, ^ ... 7 ° 1 早, 20 can be changed to left and right configuration. a first mold unit 1 〇 first mold base, a first mold base 11, and a first mold core 12 disposed in the mold base 11 and the first mold base 11 and a flute _ is disposed on The first, first, and the first moldings, the first and second panels 14, the first and second panels 14, the template 13 and the module 15 are connected to the first mold core 12, and a first forming surface 121. Rod 16. The first mold core 12 has the first template 13 having a buckled mold surface 131 ′, and the first mold XI of the second mold unit 20 is provided for the first mold core 12 to be installed 8 200932487 And a first receiving ring groove 133 extending from the first die hole 132 to the X-shaped die 132 and a recessed portion of the first die hole 132. In the present embodiment, the face-dividing face 131 has a recessed portion 34' surrounding the first die hole 132 and - an outwardly and upwardly extending outer peripheral edge of the recessed face portion 134; a sloped surface portion 135, the recessed surface portion 134 Cooperating with the inclined surface portion m = the first receiving ring groove 133. Furthermore, the first template U also has a pouring channel 136 into which the plastic 100 can be injected. Ο Ο = 2() has a second mold base 21' and a second mold core 22 disposed in the mold holder 20. The X-seat 21 has a second template 23 and a second template 24 mounted on the second cymbal. The second mold core 22 has a second forming surface 221 facing the first forming surface 121. The second template 23 has a second portion facing the first parting surface i3i: a surface 23, a first die hole 232 disposed along the axial direction for the second mold core 22, and The second receiving ring groove 233 is recessed on the second parting surface 23 ι and surrounds the second die hole 232 around the axial direction X. In the present embodiment, the second partial mold Φ 231 has a concave surface portion 234 ′ surrounding the second mold hole 232 and a fourth oblique surface portion 235 extending outward from the outer peripheral edge of the concave surface portion 234. The recessed surface portion 234 cooperates with the inclined surface portion 235 to define the second receiving ring groove 233. The second mold unit 20 is movable along the axial direction relative to the first mold unit 10 between a split mold position (see FIG. 3) and a mold clamp (see FIG. 5). When the unit 20 is in the split position, the first and second split faces 131, 231 are away from each other. In the present embodiment, an operating temperature of the first and second mold units 10 and 20 during the injection molding operation is 12 (rc. to 139 t > c, and the first and second mold bases 11 The material of 21 is steel, and the Vickers hardness (Hv) of the first and second mold bases 21 is 550. The material blocking member 30 is disposed between the first and second mold faces 131'231, and the material is blocked. The member 30 has an inner peripheral surface 围绕 disposed around the axial bore, an outer peripheral surface 32 opposite to the inner peripheral surface 31, and a first end surface 33 connected between the inner and outer peripheral surfaces 32 Μ '32, - a second end face 34 opposite to the first end face 33, and a second end face 34 extending from the inner peripheral face 31 to the outer peripheral face 32 and extending through the first and second end faces 33, 34$ into the notch 35, the wash gap ^ Corresponding to the inflow channel 136. In the present embodiment, the material of the material block 3 is an elastically deformable nickel-wrinkled titanium alloy (Ni-Be-Ti), and the melting point of the material block 3〇 It is not less than 3 inches, and the Vickers hardness of the resisting member 30 is not more than 25 (). In addition, the material of the 3G material can also be made of elastically deformable fluororubber (FPM...referred to as special rubber). For example, the core 6 or F26_4i, the thermal decomposition temperature of the resisting member 30 is not less than 峨, and the Vickers hardness of the resisting member 3 是 is between 63 and 75. The resisting member 30 is disposed at the first capacity. The ring groove 33 β, when the first die unit 20 is at the split position, the inner peripheral surface 31 is located outside the die hole m, and the outer peripheral surface 32 is abutting against the inclined face (1) of the concave face Wherein, the first end surface is higher than the first parting surface 13.1 in the axial direction. Step: as shown in FIG. 5, the second mold unit 2 is moved to the 10 200932487 clamping position, so that The first and second mold units 10 and 20 are clamped. At this time, the first and second mold faces 131 and 231 abut each other, and a forming cavity 4 can be defined between the first and second forming faces 121 and 221 . (), and the resisting member is pressed and deformed by the first and second split faces 131, 231 such that the inner peripheral surface 31 extends radially inwardly to the first and second forming faces 121, 221 And protruded into the forming cavity 40. Step 3: As shown in Figs. 4 and 5, the plastic 10 is passed through the inflowing channel 136, and the pouring notch 35 is injected into the forming die. 40, formed into the plastic lens 200. The lens 2 is formed to correspond to the upper surface 210 of the second forming surface 221, the lower surface 22 corresponding to the first forming surface 121, and corresponding one-to-one mold The outer peripheral surface 230 of the holes 132, 232. The outer peripheral surface 230 forms a parting ring groove 26 corresponding to the inner peripheral surface 31 of the resisting member 30. Step 4: As shown in Fig. 6, the second mold unit 2 〇 moving to the mold opening position, the first and second mold units 1〇, 2〇 open the mold, at this time, the resistance member 30 is no longer squeezed, the resistance member 3 〇 elastically restored to The shape and size of the inner peripheral surface 31 are separated from the forming cavity 4 (see FIG. 5) and located outside the first die hole 132. Step 5, as shown in FIG. 6, the ejector rod 16 is pushed up out of the first puller 12, and the first mold core 12 drives the plastic lens upward through the remote resisting member 30' to separate from the first The first template 13 of the mold base 11. Thereafter, as shown in FIG. 7 , a subsequent scooping operation of the plastic lens 2 can be performed, and the first-order track portion 27 at the gate of the plastic lens 2 is cut off to form the notch portion 240 (commonly known as D_cut). From the above description, the advantages of the present invention can be summarized as follows: 11 200932487 - Since the resist member 30 is made of an elastically deformable material, instead of a rigid material, Two mold unit 2 () moves to the mold position
置時’ ^第一、二分模面131、231與該阻料件30之間可 產生緊密的接合關係’不僅可防止㈣1GG在射出成形時 ，渗入該第一、二分模面131、231與該阻料件3〇之間， 更可防止塑料100滲入該第一、二分模面l3i、23i之間， 因此4塑膠鏡片2G0在該阻料件3〇圍繞的範圍内均不會 產生毛邊，如此，不僅可避免該塑膠鏡片2〇〇在組入鏡^ 時受到干擾，更可有效改善毛邊脫落於鏡面上的問題，而 提昇鏡頭組的成品良率。 —、由於該阻料件30是以可彈性變形的材質製成，當 該第二模具單元20移動至該開模位置時，該阻料件30即 會彈性恢復成未受壓的形狀與尺寸，而退出該成形模穴4〇 外，因此，該阻料件30完全不會影響該塑膠鏡片2〇〇的脫 模離型作業。 值得一提的是，雖然本實施例是以成形一片塑膠鏡片 2〇〇來作說明，但是可以理解的是，本發明當然亦可增加該 第一、二模仁12、22與該阻料件30的數量，而用於同時 成形出多數片的塑膠鏡片200。此外，可以了解的是，本發 明的第二模座21可取消該第二容置環槽233的設置，而僅 保留該第一模座11的第一容置環槽133，這樣可也以產生 相同的功效。 另外’雖然本實例所成形的塑膠鏡片2〇〇在該阻料件 30的進澆缺口 35處可能會產生毛邊，但是，業界在該塑膠 12 200932487 鏡片200的澆口處’本就有毛邊的允許，只要毛邊不超出 該塑膠鏡片200的外徑’即是合乎標準，再者，該塑膠鏡 片200在進行後續的剪切作業時，即會將澆口處的該流道 部270切除，而形成該切口部240，因此，澆口處若有毛邊 亦會被切除。 歸納上述，本發明之可消除毛邊之塑膠鏡片的成形模 具，不僅可防止塑料於射出成形時滲入分模面之間，且可 〇 使塑膠鏡片於成形後不產生毛邊，進而提昇鏡頭組成品的 良率’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 能以此限定本發明實施之範圍，即大凡依本發明申請專利 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。 〇 13 200932487 塑膠鏡片成形楔具與 塑料的組合剖視 【圖式簡單說明】 圖1是習知-示意圖； 圖2是該成形模具所成形 圖’說明該塑膠鏡片的周面上形成、:塑㈣片的俯視示意 圖3是本發明可消除毛邊之塑=的 佳實施例所採用的-組成形模立法一較 Ο 〇 形模具的-第二模具單元相對於j視；^圖’說明該成 模位置； 、第一模單元移動至一開 圖4是圖3中模具單元的局部俯視示意圖； 圖5是-類似圖3的視圖，說明該較佳實施例將該第 二模具單㈣對於該第-模單元移動至—合模位置，以形 成一成形模穴，然後將塑料射入該成形模穴； 圖6是-類似圖3的視圖，說明該較佳實施例將該第 -模具早疋移動至該開模位置，然後將所成形出的一塑膠 鏡片頂出；及 圖7是-俯視示意圖’說明該較佳實施例將該塑膠鏡 片的一流道部切除而形成一切口部。 14 200932487At the time of 'the first and second mold faces 131, 231 and the resist member 30 can produce a tight joint relationship' not only prevents the (4) 1GG from penetrating into the first and second parting faces 131, 231 and the same during injection molding. Between the resistance members 3〇, the plastic 100 is prevented from infiltrating between the first and second parting surfaces l3i and 23i, so that the 4 plastic lenses 2G0 do not have burrs within the range surrounded by the blocking member 3〇, In addition, it can not only avoid the interference of the plastic lens 2 when it is incorporated into the mirror, but also effectively improve the problem that the burr falls off the mirror surface, and improve the finished product yield of the lens group. - Since the resisting member 30 is made of an elastically deformable material, when the second mold unit 20 is moved to the mold opening position, the resisting member 30 elastically returns to an uncompressed shape and size. And exiting the forming cavity 4, therefore, the resisting member 30 does not affect the demolding operation of the plastic lens 2〇〇 at all. It should be noted that although the present embodiment is described by forming a plastic lens 2, it can be understood that the first and second mold cores 12 and 22 and the resistance member can of course be added to the present invention. The number of 30 is used to simultaneously form a plurality of sheets of plastic lenses 200. In addition, it can be understood that the second mold base 21 of the present invention can cancel the arrangement of the second receiving ring groove 233, and only retain the first receiving ring groove 133 of the first mold base 11, so that Produce the same effect. In addition, although the plastic lens 2 formed in this example may have a burr at the pouring gap 35 of the resisting member 30, the industry has a burr at the gate of the plastic 12 200932487 lens 200. It is permissible to ensure that the burr does not exceed the outer diameter of the plastic lens 200. Further, the plastic lens 200 cuts off the flow path portion 270 at the gate during the subsequent cutting operation. The slit portion 240 is formed, and therefore, if there is a burr at the gate, it is also cut. In summary, the forming mold of the plastic lens for eliminating burrs of the present invention not only prevents plastic from penetrating between the parting surfaces during injection molding, but also prevents the plastic lens from being burred after forming, thereby enhancing the composition of the lens. The yield 'can indeed achieve the purpose of the invention. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the present invention and the description of the invention are All remain within the scope of the invention patent. 〇13 200932487 Combination of plastic lens forming wedge and plastic [Simplified illustration of the drawing] Fig. 1 is a conventional-schematic diagram; Fig. 2 is a drawing of the forming mold, which shows the formation on the circumferential surface of the plastic lens: (4) Schematic diagram of the top view of the sheet 3 is a preferred embodiment of the invention for eliminating the burr of the burr - the composition of the mold is more than that of the 〇-shaped mold - the second mold unit is relative to the view; FIG. 5 is a partial top view of the mold unit of FIG. 3; FIG. 5 is a view similar to FIG. 3, illustrating the preferred embodiment of the second mold unit (four) for the The first die unit is moved to a clamping position to form a forming cavity, and then plastic is injected into the forming cavity; FIG. 6 is a view similar to FIG. 3, illustrating the preferred embodiment of the first die The crucible is moved to the mold opening position, and then the formed plastic lens is ejected; and FIG. 7 is a top view showing that the preferred embodiment cuts the first-order track of the plastic lens to form a mouth. 14 200932487
【主要元件符號說明】 100··· …塑料 16·.··· …頂出桿 200··· …塑膠鏡片 20·.··· …第二模具單元 210··· …上形面 21··.·· …第二模座 220··· …下形面 ' 22·.··· …第二模仁 230··· …外周面 221… …第二成形面 240··. …切口部 23 …第二模板 250··· …環面部 231… …第二分模面 260··· …分模環槽 232… …第二模孔 270·.. …流道部 233… …第二容置環槽 10 ···· …第一模具單元 234··· …凹陷面部 11··.· …第一模座 235… …傾斜面部 12…· …第一模仁 24···.. …第二型板 121… …第一成形面 30.··.· …阻料件 13 ···· …第一模板 31·.··· …内周面 131 · …第一分模面 32····. …外周面 132… …第一模孔 33.···· 133… …第一容置環槽 34••… …第二端面 134··· …凹陷面部 35••… …進澆缺口 135 ·· …傾斜面部 40•…· …成形模穴 136··· …進澆流道 X…… …軸向 14 ·.· …第一型板 15 ···· …模塊 15[Description of main component symbols] 100····Plastic 16·····...ejection rod 200····plastic lens 20····...second mold unit 210···...upper surface 21· ····...the second mold base 220···...the lower surface '22·.··...the second mold core 230···the outer peripheral surface 221...the second forming surface 240··. 23 ...the second template 250···...the ring surface 231...the second parting surface 260···the parting ring groove 232...the second mold hole 270·.....the flow path part 233...the second volume Ring groove 10 ····...first mold unit 234···...recessed surface 11···...first mold base 235...inclined surface 12...·first mold core 24···.. ... The second molding plate 121 ... the first molding surface 30. ···· ... the material blocking member 13 ····...the first template 31·····...the inner circumferential surface 131 · the first partial surface 32· ···.... outer peripheral surface 132... first die hole 33.···· 133... first receiving ring groove 34••... second end face 134··· ... recessed face 35••... Pouring the notch 135 ··...inclined face 40•...· ... Shaped cavity 136 into the water flow passage ????? ... ...... ... X-axis 14 · · · · · · 15 ... ... first plate module 15