200911504 九、發明說明： 【發明所屬之技術領域】 二發明係關於-種射出成形用金屬模具，詳而 係關於一種將矩形薄板狀 成形用金屬模具。 板予㈣出成形之射出 【先前技術】 抑不裝置之正下方型光源所使用之光擴散板 方=成，具有與液晶顯示面大致相同大小之長方形乃至正 2缚板狀，而且使用射出成形用金屬模具，藉由射出 成形衣造該光擴散板之技術。該技 a筏術係揭不於例如日本特 許公報之特開2005-271306號（專利文獻υ。 作為高品質製品之光擴散板，被要求必須是在呈矩來 (長方形乃至正方形）之整個主平 y 卞囬上顯不均一光學特性之 先予面板。因此，乃高度要求光擴散板在整個主平面 板厚不均或氣泡之情形。 ^針對此點’用以將光擴散板射出成形之金屬模具之模 八（caV1ty) ’由於係模仿光擴散板之製品形狀，相對於大 小與光擴散板之大小對應且呈矩形（長方形乃至正方形） 之主平面面積（模穴面積），其模穴深度極淺，故模穴^呈 扁平式矩形空間，因此不容易將溶融樹脂均勾地射出充填 於整個权穴且在模穴内不會產生樹脂流動不均，而且在該 射出充填步驟中，亦不容易使整個模穴不會產 ^。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Plate pre-(4) injection molding [previous technique] The light diffusion plate used for the direct-type light source of the device is not formed, and has a rectangular shape or a substantially two-shaped plate shape which is substantially the same size as the liquid crystal display surface, and is formed by injection molding. The technique of forming the light diffusing plate by injection molding using a metal mold. This technique is not disclosed in, for example, Japanese Laid-Open Patent Publication No. 2005-271306 (Patent Document υ. As a light diffusing plate of a high-quality product, it is required to be in the form of a rectangle (a rectangle or even a square). Flat y 卞 上 上 显 光学 光学 光学 光学 光学 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The mold of the metal mold (caV1ty) 'Because it is the shape of the product that mimics the light diffusing plate, the cavity is corresponding to the size of the light diffusing plate and is a rectangular (rectangular or even square) main plane area (cavity area). The depth is extremely shallow, so the cavity ^ is a flat rectangular space, so it is not easy to spray the molten resin to fill the entire hole and the resin flow unevenness does not occur in the cavity, and in the injection filling step, It is not easy to make the whole cavity not produce ^
或氣泡之捲入。 U W 有鑑於此，如專利文獻丨所示，乃提出一種選定射出 320058 5 200911504 成元用孟屬模具之 '乾口（ gate )個數而可有效率地製造品 質良好之光擴散板之製造方法之方案，惟以此製造方法而 言並不完善’而難以穩定地製造高品質之光擴散板。 f 尤其是在高精細晝質影像（high vision )用液晶電視 所使用之光擴散板，其縱橫（叫⑽）比較大，而且由於 L年來的大晝面化，要穩定地製造遍及整個主平面均無板 厚不均或氣泡之高品質之光擴散板，已有日趨困難之傾 向，故已無法以上述之習知技術來因應。 徂一^月係為了解決上述之問題而研創者，#目的在提 金而斤^出成形用金屬模具’即使是如縱橫比較大且在大 散板，縱橫比較少：曰:工遍液晶電視所用之光擴 仍可穩定且Λ 之面積亦較大之光擴散板， 氣泡^率地製造遍及整個主平面均無板厚不均或 轧，包之同口口質之光擴散板。 【發明内容】； 薄板發明之第1態樣係—種將矩形 其具備以下構成.埶：成形之射出成形用金屬模具， 開口在進道㈤一);及複數個洗口， 出於該模穴·纟/之^之主平面’用以將溶融樹脂射 述模穴之—邊前述複數個洗口，係在將前 穴之前述-邊予以：等二所獲：之區域之中接近將前述模 間隔設置於前述模&:之拉八中心線之兩側區域’隔開 <倮八之另—邊方向。 本發明之第2態樣係— 楂將長方形溥板狀之光擴散板 320058 200911504 出成形之射出成形用金屬模具，其具備以下構成. 用及稷數個“ ’開口在施行製品成形之模穴之主 ί:;個洗口係於前述模穴之長邊方向隔開間二: .模穴之短邊予以二等分之模穴中心線之兩側=近將别述 附屬於前述本發明第2態樣之第3態樣係在前述射 >v ^用金屬模具中’前述模穴之對角線長度為_Or the entrapment of bubbles. In view of this, UW, as shown in the patent document, proposes a method for manufacturing a light diffusing plate which can efficiently produce a good quality by selecting the number of 'gates' of the Mongol mold. The solution is not perfect in terms of the manufacturing method, and it is difficult to stably manufacture a high-quality light diffusing plate. f Especially for light diffusing panels used in high-definition illuminating liquid crystal televisions, the vertical and horizontal (called (10)) are relatively large, and due to the large surface of the L-year, it is stably manufactured throughout the main plane. Light diffusing sheets having no uneven thickness or high quality of air bubbles have become increasingly difficult, and it has not been possible to respond to the above-mentioned conventional techniques. In order to solve the above problems, the researcher created the metal mold for the purpose of gold extraction, and even if it is large and large, it is relatively small in vertical and horizontal: 曰: work through LCD TV The light diffusing plate used for the optical expansion which is stable and has a large area is also used for the production of a light diffusing plate having the same thickness throughout the main plane without unevenness or rolling. [Survey of the Invention] The first aspect of the invention relates to a rectangular structure having the following structure: a molding die for injection molding, an opening in an inlet (5) a), and a plurality of washings, for the mold The main plane of the hole / 纟 / ^ is used to spray the molten resin into the cavity - the above-mentioned plurality of rinsings are provided in the area of the front hole: The die spacing is set in the two sides of the center line of the die &: the 'eighth' direction. The second aspect of the present invention is a metal mold for injection molding which is formed by forming a rectangular plate-shaped light-diffusing sheet 320058 200911504, and has the following structure: and a plurality of "openings in the mold forming the product. The main ί:; a rinsing is in the direction of the long side of the cavity is separated by two: The short side of the cavity is halved on both sides of the center line of the cavity = the near description will be attached to the aforementioned invention The third aspect of the second aspect is in the above-mentioned shot >v ^ metal mold, 'the diagonal length of the aforementioned cavity is _
1300mm，而前述模穴 I _ t 之冰度為^瓜瓜至5.0mm，及在桓 八短邊方向從將前述模穴之短邊在松 ⑽咖以内之區域設有前述刀之柄八中心線離開 ^附f於前述本發明之第1態樣乃至第3態樣中任一者 恶‘之弟4態樣係在前述射出成形用金 穴之對角線長度為5。。酿至_贿；前述模穴之；;= 至5.〇麵；及設前述模穴之面積為W、模穴深 i=mm、前錢口之個數個時，滿足以下數式⑴ 2$N<{S/ (t+4) }1〇-4_ · ·⑴ 藉此，洗口 20之個數即成為2個、3個 ::、。7個、8個、9個、1◦個、Η個、〗5個、叫任 附屬於前述本發明之W態樣乃至第4態樣中任—者 悲樣之第5態樣為，前述模穴之主平面形狀係為正方妒。 依據根據本發明之前述第1態樣乃至第4態樣之射出 320058 7 200911504 成形用金屬模具，係藉由佶 由使用熱流道，使來自射出成形機 之融樹脂（熱可塑性椒t、 十每Li 土注树月日）不會降低樹脂溫度，而可由 禝數個各澆口射出充填於掣σ 法 具、t口口成形之模穴内。藉此，相較 叙二’牧°。runne〇之情形，可改善模穴内之樹脂流 :卜不曰產生樹脂流動不均，而使熔融樹脂得以均句地 遍佈整個模穴。 而且’複數個洗口係於模穴之另一邊（長邊）方向隔 開間隔設置在接近將模穴之—邊（短邊）二等分之模穴中 心線之兩侧區域，因此來自錢口之溶融樹脂在填埋模穴 之中央區域之後，會以從中央區域擴散至外側區域之方式 ㈣性良㈣流動’而不會產生殘留氣泡或氣泡之捲入。 如此’藉由熱流道之使用錢Π位置而獲得相乘性作 用，即使是縱橫比較大、Φ々A & h,, ^主十面之面積較大之光擴散板， 亦可穩定且高效率地製造料可遍及㈣無板厚 度不均或氣泡之南品質之光擴散板。· 《 【實施方式】 以下參照第1圖至第8圖說明本發明之最佳實施例。 第1圖係顯示本實施形態之射出成形用金屬模具之主 要部分。射出成形用金屬模具係藉由固定金屬模具1與可 動金屬模具2來界定供製品成形（光擴散板成形）用之模 穴3。模穴3係模仿作為成形對象之光擴餘之製品形狀 而構成扁平之矩形空間，該矩形空間具有與光擴散板之大 小對應之大小且呈矩形（長方形乃至正方形）之主平面、 及與光擴散板之板厚對應之模穴深度。 320058 8 200911504 =金屬模…由安裝板]2、熱流道平板η、固 疋側杈八板13、及模穴平板〗4所構成。 熱流道平板12係内建有安裝了加熱以之熱流道分 "(刪⑷16。模穴平板Μ係具有作為模穴3之一 方主平面之製品面17。 :屬模具1係設有複數個用以將炫融樹脂射出 杈八之况口 20 (參照第3圖至第7圖），且依 r 下口 ㈣（h_ing)2】。㈣殼體21係由： =冓:=成··開口在製品面17而形輸口2〇之嗔 鳴套二（=)23、用以開㈣口如之閥洗口临* pm ) 24、用以收容閥濞銘 Sdie ““ 勒24而形成炫融樹脂通路25之 2!、配置於閥澆.口銷2 4之外側之噴嘴加教哭2 6、 叮=，洗…之活塞式液叫一 來自未圖示之:射出成形機 係從熱流道…、形成於熱流道=:= 通路”送至嘴嘴殼體21之炫融樹脂通路25=: 使光擴散板成形之樹脂係為經混 樹脂，例如甲基丙埽苯乙烯（_有先擴放叙熱可塑性 乙輯。㈣㈣e) Μ"*响或聚苯 ，閥澆口銷24之前端 如第2圖所示，藉由 口 20之錐形内周面， 之狀態，由第2圖觀 澆口 20係成為錐形（taper)孔 部24A配合此錐形孔而成為錐形軸。 閥澆口銷24之前端部24A座落於、声 而將洗口 20封閉。從澆口 20被封: 320058 9 200911504 ’==:=:=方_，使，銷 1打開，令炫__ 5=41周面離開’而錢口 .模穴3内。 5之熔融樹脂從澆口 20射出至 藉由使用熱流道分支營】 + 自射出成形撒+ # . ，甚至賀嘴加熱器20，來 可從複數個各淹口 2〇射出 ^；下降而 〆*第2圖所示，當闕洗口鎖、2二兑1 内0 1澆口 20之錐形内巧 、’ 則端部24Α座落於 係以閥淹口鎖24=:::°處於被封閉之狀態時， ,, 处製品面1 7穷出於禮a ς 内相^於預定量（突出量h之方式設定尺寸輪八3 旦猎此，在模穴3所成形之光擴散板中 夏Ρ而成之深度之凹狀澆口銷# 法、，^成由大出 時，係會遮蔽來自光源之光線1 口鎖痕跡為凸狀 散板之光學性能降低之原因’而成為使光擴 Λ· i 肩蔽來自光源之光線，且凹狀時，則 擴散板之光學性能降低。 乂 *衫，故不會使光 接著，參照第3圖至第7圖 置位置。第3圖至第7圖均為 口 20之個數、配 3之主平面平面視圖，形用金屬模具之模穴 供“ 出成形用金屬模且俜用以腺狹 杈比為16: 9之高精細晝質影像用液 、：用以將縱 形，模穴3之主平面係為由長邊χ θ_^視之先擴散板成 成之長方形。第3圖係顯示42至％ 2 Y、對角線D所 示37至則等級、第5 :專級、第4圖係顯 圖係顯示2 8至3 7吋等 320058 200911504 ' 級、第7圖俜黏- 乂係顯不2〇至28吋等級。 無論何者’複數個澆口 2〇均為於模穴 •向隔開預定之間隔 之長邊X方 „ 阳而5又置在將模穴3之短邊γ四#八 得之區域（γ/仏—山 四寺为所獲 )之中，於接近將模穴3之短邊二等分# It' y之兩側之區域^…。 當杈穴3之對角線〇長度 〇m 3之深度為1.0min 5 ^ 芏UOOmm，拉穴 至5.0mm，且設模穴面積（主华而品灶、 為Smm2、模穴嚟择达 、 平面面積） f 滿足、淹口20之個數為N個時，以 滿足以下數式⑴之方式，設定洗口 20之個數。 2-N< {S// Ct+4) }1〇-4 . . . ( ]} 藉此，堯口 20之個數，以42至5〇吁等級 者而言為8個、37…等級(第4圖)者…弟圖） 以28至37时等級（第5圖、第6圖）者而言為4個、、、 2〇至28时等級（第7圖）者而言為2俯即可。 以 圖丄口 2〇之個數若為8個、6個，則洗口 20即如第3 圖、第4圖所示，在模穴3 ^ ,, 软3短邊方向隔以預定間隔整列 配置成二列。此時，澆口 2〇之排列位置係設歹： 邊方向從將模穴3之短邊γ二等分之二:、果穴短 ^ 接八中心線Cy離簡 距離a= 100mm以内之區域。再去 ^ LA丹耆澆口 20之短邊丫古 向之間隔^較洗口 2〇之長邊X方向之間隔X小方 澆口 20之個數若為4個，則如第5圖所示，係於 八之短邊方向隔以預定間隔排列配置成如' 6圖所示’在將模穴3之短邊γ ，如第 上排列配置成-列。以二列配置之情形而言，洗口加 320058 11 200911504 定為於模穴短邊方向從將模穴3之短邊Y二等分之模穴中 〜線Cy離開距離a= 1〇〇mm以内之區域，且澆口汕之短 邊I向之間隔y係較洗口 2〇之長邊X方向之間隔χ小。 澆口 20之個數若為2個，則澆口 2〇即如第了圖所示， 在將模穴3之短邊γ -楚八+ #〜a , 心姐遭Y 一專分之拉穴中心線Cy上排列配置 成一列。 藉由此種洗口配置，來自各繞口 2〇之高溫熔融樹脂， 於填充模穴3之中参p # # # „ ., 〒央£域之後，以從中央區域擴散至外側 之方式流動性良好地流動。藉此，在射出充填步驟中， 遍佈整個模穴不會產生殘留氣泡或氣泡之捲入。第 =:所示…個數4、二列配置一脂之 藉由熱流道分^ 16之使用與洗口位置而獲 I 用’即使是縱橫比較大、主平面之面積較大之 」穂疋且回效率地製造可遍及整個主平 板厚度不均或氣泡之高品質之光㈣板。 另外:當模穴3之對角線〇之長度為5 13 00mm，模穴3夕聲庙基… 之木度為l.〇mm至5.〇min，且钟楛a 積為Smm2、模穴深声兔t °又、八面 廿八冰度為tmm、澆口 2〇之個數為N個時， 料為滿足以下數式⑺，且具#N=2n、Nn1300mm, and the ice of the aforementioned cavity I _ t is from the melon to the 5.0mm, and the shank of the knives is provided in the area of the short side of the cavity (10) in the short side of the 桓8 The line is separated from the first aspect of the present invention, and the third aspect of the third aspect of the present invention is such that the diagonal length of the gold hole for injection molding is 5. . Stuffed to _ bribe; the aforementioned cavity;; = to 5. 〇 face; and the area of the aforementioned cavity is W, the cavity depth i = mm, the number of the front of the mouth, the following formula (1) 2 $N<{S/(t+4) }1〇-4_ · (1) By this, the number of the washings 20 is two or three::,. 7th, 8th, 9th, 1st, 1st, 5th, 5th aspect, which is attached to the W aspect of the present invention or even the 4th aspect, the fifth aspect of the sadness is The main plane shape of the cavity is square. According to the first aspect of the present invention or the fourth aspect of the invention, the molding die 320058 7 200911504 is formed by using a hot runner to melt the resin from the injection molding machine (thermoplastic pepper t, ten each Li soil injection tree does not reduce the resin temperature, but can be injected into the cavity formed by the 掣σ method and t mouth by a number of gates. In this way, compared to Syria II. In the case of runne, the resin flow in the cavity can be improved: the resin is not uniformly flowed, and the molten resin is uniformly distributed throughout the cavity. Moreover, 'a plurality of washing mouths are arranged at intervals on the other side (long side) of the cavity at intervals on both sides of the center line of the cavity which is halved to the edge (short side) of the cavity, and thus from the money After the molten resin in the cavity is filled in the central region of the cavity, it will diffuse from the central region to the outer region (four) flow (four) flow without trapping residual bubbles or bubbles. In this way, by using the hot runner to obtain the multiplicative effect, even if the longitudinal and horizontal directions are relatively large, Φ々A & h,, ^ the light diffusing plate with a large area of the main ten sides can be stable and high. Efficiently manufacturing materials can be used throughout (4) light diffusing plates without uneven thickness of the board or south of the bubble. [Embodiment] Hereinafter, preferred embodiments of the present invention will be described with reference to Figs. 1 to 8. Fig. 1 is a view showing the main part of the injection molding die of the embodiment. The injection molding die defines the cavity 3 for forming a product (light diffusion plate forming) by fixing the metal mold 1 and the movable metal mold 2. The cavity 3 is a flat rectangular space which is shaped like a light-splitting product as a forming object, and has a rectangular shape (rectangular or square) main plane and light with a size corresponding to the size of the light diffusing plate. The plate thickness of the diffuser corresponds to the depth of the cavity. 320058 8 200911504 = metal mold... consists of mounting plate 2, hot runner plate η, solid side plate 8 plate, and cavity plate plate 4. The hot runner plate 12 is internally provided with a hot runner which is installed with heating. (Deleted (4) 16. The die plate has a product surface 17 which is one of the main planes of the cavity 3. The mold 1 is provided with a plurality of It is used to spray the dazzling resin into the mouth of the 208 (refer to Figures 3 to 7), and according to r (4) (h_ing) 2]. (4) The shell 21 is composed of: =冓:=成·· Opening on the product surface 17 and the shape of the mouth 2 嗔 套 套 二 (=) 23, for opening (four) mouth such as the valve wash pro * pm) 24, to accommodate the valve 濞 Ming Sdie "" 2, the melt-melt resin passage 25!, the nozzle placed on the outside of the valve pin. The pin 2 4 is taught to cry 2 6, 叮 =, wash... The piston type is called from the unillustrated: the injection molding machine is from The hot runner ... is formed in the hot runner =: = passage" to the mouth of the nozzle housing 21; the resin for forming the light diffusing plate is a mixed resin such as methyl styrene styrene (_ There is a first expansion of the thermal plasticity B. (4) (four) e) Μ " * ring or polystyrene, the front end of the valve gate pin 24 as shown in Figure 2, by the tapered inner peripheral surface of the mouth 20, the state, by the 2 view The port 20 is formed into a tapered hole portion 24A which is fitted into the tapered hole to form a tapered shaft. The front end portion 24A of the valve gate pin 24 is seated and sounded to close the washing port 20. The gate 20 is sealed from the gate 20. : 320058 9 200911504 '==:=:=方_, so that pin 1 is opened, so that dazzle __ 5=41 weeks to leave 'and money mouth. cavity 3. 5 molten resin is emitted from gate 20 to By using the hot runner branch camp + + self-injection forming sprinkle + #. , or even the mouth heater 20, can be shot from a plurality of flooding ports 2; drop and 〆 * shown in Figure 2, when washing Mouth lock, 2 2 to 1 inside 0 1 gate 20 taper inside, 'then end 24 Α is seated in the valve with the flood lock 24 =::: ° in the closed state, ,, the product Face 1 7 is out of courtesy ς The inner phase is set at a predetermined amount (the amount of h is set to the size of the wheel 8:3), and the depth of the hole is formed in the light diffusing plate formed by the cavity 3 The gate pin #法,,^, when it is large, will block the light from the light source, and the trace of the lock will be the cause of the decrease in the optical performance of the convex plate, and it will become the light source. Light and concave At the time, the optical performance of the diffuser is lowered. 乂* 衫, so the light will not be turned on, refer to the position of Fig. 3 to Fig. 7. Fig. 3 to Fig. 7 are the number of the mouth 20, with 3 Plane view of the main plane, the mold hole of the metal mold is used for "forming the metal mold for forming and using the high-quality enamel image liquid for the glandular narrow ratio of 16:9: for the vertical shape, the cavity 3 The main plane is a rectangle formed by the long-side θ θ_^ as the first diffusion plate. Fig. 3 shows 42 to % 2 Y, diagonal D shows 37 to grade, 5: special grade, 4th diagram shows system 2 8 to 3 7 , etc. 320058 200911504 'level, 7th Figure 俜 sticky - 乂 shows no 2 to 28 吋 grade. No matter which of the 'multiple gates 2 〇 are in the cavity hole · the long side X of the predetermined interval to separate yang and 5 is placed in the area of the short side of the cavity 3 γ four #八得(γ /仏—Mountain Four Temples are obtained), in the area close to the short side of the cavity 3, bisect the sides of # It' y ^.... When the diagonal of the acupoint 3 is 〇m 3 The depth is 1.0min 5 ^ 芏UOOmm, pull the hole to 5.0mm, and set the cavity area (main Hua and stove, Smm2, mold hole selection, plane area) f Satisfaction, the number of flooding 20 is N In the case of satisfying the following formula (1), the number of the wash ports 20 is set. 2-N< {S// Ct+4) }1〇-4 . . . ( ]} For the number of the 42 to 5 〇 等级 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , For the ones, and from 2 to 28 o'clock (Fig. 7), it can be 2 feet. If the number of 2〇 is 8 or 6, the wash 20 is as shown in Fig. 3. As shown in Fig. 4, in the cavity 3 ^ , the soft 3 short side direction is arranged in two rows at predetermined intervals. At this time, the gate The position of the 2〇 is set to 歹: the side direction is divided into two equal parts of the short side γ of the cavity 3: the short point of the fruit hole is connected to the area of the center line Cy by a distance of a=100mm. Then go to ^ LA The interval between the short side of the Tanjong gate 20 is the interval of the ancient direction. The distance between the long side of the tangent 2 is the X direction. If the number of the small square 20 is 4, as shown in Fig. 5, it is The short side directions of eight are arranged at predetermined intervals so as to be arranged as shown in '6', and the short sides γ of the cavity 3 are arranged in a row as in the first row. In the case of two columns, the washing is added. 320058 11 200911504 It is determined that in the short-side direction of the cavity, the area from the cavity where the short side Y of the cavity 3 is equally divided into the line A is within a distance of a = 1 〇〇 mm, and the short side of the gate I The interval y is smaller than the interval between the long sides X of the washing port 2〇. If the number of the gates 20 is two, the gate 2〇 is as shown in the figure, and the cavity 3 is Short-side γ-Chu-8+#~a, the heart-sister is arranged in a row on the center line Cy of the point of the Y-point. With this kind of rinsing configuration, the high-temperature molten resin from each winding 2〇 Fill the cavity 3 in the reference p # # # „ . . After the central area, the flow is good and flows from the central area to the outside. Thereby, in the injection filling step, no residual bubbles or bubbles are trapped throughout the entire cavity. No. =: The number of 4, the second column is configured by the hot runner. The use of the hot runner is 16 and the position of the mouth is used. I use 'even if the aspect ratio is large and the area of the main plane is larger.' And efficiently, a high-quality light (four) plate which can be uneven throughout the thickness of the main flat plate or bubbles can be manufactured. In addition: when the length of the diagonal line of the cavity 3 is 5 13 00 mm, the mold hole 3 夕 sound temple base... The wood degree is l. 〇 mm to 5. 〇 min, and the clock 楛 a product is Smm2, cavity When the deep rabbit t °, the eight sides of the octagonal ice is tmm, and the number of gates 2 is N, it is expected to satisfy the following formula (7), and has #N=2n, Nn
1+2 或 N=2n+1 或 U 至5之整數。 1之堯口者。惟η係為2 職{S/ ( t+ 4) }ΐ〇·4 · · · ( 2) 藉此；堯口 2〇之個數即藉由n之選定而成為2個、3 320058 12 911504 個、4個、5個、6個、 · 15個、16個、17個 個、9個、10個、Ϊ 4個、 34個之任—者。 固3〇個、31個、32個、33個 此外’本發明之射屮 形狀亦可為正方形。成形用金屬模具，模穴之主平面 本發明除上述外，开、， 為限，亦可進-步進行適明之實施形態之說明 樣來實施。 田之’交更，而^其他各種之態 另外，日本專利申請第2007·070857 9曰申士主、+人Α 就.（.20.07年3月 r同全部内容均作為參考而納入本宰說明查 【圖式簡單說明】 不木况明書。 第1圖係為顯示本發明射出成 形態之主要部分之剖面圖。 m% ^第2圖係為—實施形態之噴嘴前端部之放大剖面圖。 声σ 係為42至52对等級之光擴散板成形用之 澆口配置之俯視圖。 第4圖係為顯示37至42口寸等級之光擴散板成形用之 澆口配置之俯視圖。 弟5圖係為顯示28至37口寸等級之光擴散板成形用之 澆口配置之俯視圖。 第6圖係為顯示28至37吋等級之光擴散板成形用之 澆口配置之俯視圖。 第7圖係為顯示20至28吋等級之光擴散板成形用之 澆口配置之俯視圖。 320058 13 200911504 第8圖係為顯示一實施形態之射出成形用金屬模具之 樹脂流動特性圖。 【主要元件符號說明】1+2 or N=2n+1 or an integer from U to 5. 1 尧 mouth. Only the η system is 2 jobs {S/ ( t+ 4) }ΐ〇·4 · · · ( 2) By this; the number of 尧 2〇 is 2, 3 320058 12 911504 by the choice of n 4, 5, 6, 15, 15, 16, 17, 9, 10, 4, 34. Three, 31, 32, and 33 solids The shape of the 屮 of the present invention may also be square. Mold for forming, main plane of cavity The present invention is not limited to the above, and is not limited to the above, and can be carried out by following the description of a suitable embodiment. Tian Zhi's pay more, and ^ other kinds of state. In addition, Japanese Patent Application No. 2007·070857 9 曰 Shen Shizhu, + people Α ( (.20.07 March r all the contents are included as reference for the sect description BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the main part of the injection form of the present invention. m% ^ Fig. 2 is an enlarged sectional view of the nozzle tip end portion of the embodiment. A plan view of a gate arrangement for forming a light diffusing plate of 42 to 52 pairs. Fig. 4 is a plan view showing a gate arrangement for forming a light diffusing plate of 37 to 42 inches. A plan view of a gate arrangement for forming a light diffusing plate of 28 to 37 inches. Fig. 6 is a plan view showing a gate arrangement for forming a light diffusing plate of the order of 28 to 37 inches. Fig. 7 is a display 20 A plan view of a gate arrangement for forming a light-diffusing sheet to a level of 28 Å. 320058 13 200911504 Fig. 8 is a flow chart showing the resin flow characteristics of the metal mold for injection molding of one embodiment. [Description of main component symbols]
2 可動金屬模具 3 模穴 11 安裝板 12 熱流道平板 13 固定側模具板 14 模穴平板 15 加熱器 16 熱流道分支管 17 製品面 20 澆口 21 喷嘴殼體 23 喷嘴套筒 24 閥澆口銷 24A 前端部 24B 前端面 25 熔融樹脂通路 26 噴嘴加熱器 27 活塞式液壓缸 28、29 溶融樹脂通路 A、B 模穴中心線之兩側之區域 Cy 模穴中心線· D 對角線 P 預定量（突出量） X 長邊 Y 短邊 14 3200582 Movable metal mold 3 Mould 11 Mounting plate 12 Hot runner plate 13 Fixed side die plate 14 Cavity plate 15 Heater 16 Hot runner branch pipe 17 Product face 20 Gate 21 Nozzle housing 23 Nozzle sleeve 24 Valve gate pin 24A front end portion 24B front end surface 25 molten resin passage 26 nozzle heater 27 piston type hydraulic cylinder 28, 29 molten resin passage A, B area on both sides of the center line of the cavity Cy hole center line · D diagonal line P predetermined amount (protruding amount) X Long side Y Short side 14 320058