200906593 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種射出成形模具組，特別係有關 於一種射出成形模具組之冷卻水路設計。 【先前技術】 首先請參閱第1圖，一般平面顯示器的背光模組中大 多包含有一矩形膠框P’用以固定導光板或是其他光學元 件，其中膠框可透過射出成形的方式製作。接著請參閱第 2圖，用以製造膠框P的射出成形模具組主要包括一公模 10、一母模20以及一注料嘴30,其中塑料可由注料嘴30 經過母模20内部的複數個熱澆道40而注入成形區域50 内，藉以製作前述膠框P ;如第2圖所示，前述成形區域 50係由公模10上之公模穴51以及母模20上之一母模穴 52所組成。 請一併參閱第3A、3B圖，前述公模穴51係位於公 模10之分模面101上，並且在公模10内部通常設有複數 條平行流道11，其位置則對應於前述的公模穴51。然而， 該些平行流道11中的冷卻循環流體大多僅能對於公模穴 51的局部位置進行冷卻，如此不僅容易造成冷卻區域不 均勻，同時亦無法達到良好的熱交換效果，其缺點則為射 出成形後需要耗費較長的冷卻時間，且成形後的產品容易 產生翹曲變形。 再請一併參閱第4A、4B圖，前述母模穴52係位於 母模20之分模面201上，並且在傳統的母模20内部通常 僅設有一 S形流道21，其位置則對應於前述母模穴52 ;200906593 IX. INSTRUCTIONS OF THE INVENTION: TECHNICAL FIELD The present invention relates to an injection molding die set, and more particularly to a cooling waterway design relating to an injection molding die set. [Prior Art] Referring first to Figure 1, a backlight module of a general flat panel display includes a rectangular plastic frame P' for fixing a light guide plate or other optical components, wherein the plastic frame can be formed by injection molding. Next, referring to FIG. 2, the injection molding die set for manufacturing the plastic frame P mainly includes a male die 10, a female die 20, and a injection nozzle 30, wherein the plastic can pass through the inside of the female die 20 through the injection nozzle 30. The hot runner 40 is injected into the forming region 50 to form the plastic frame P. As shown in Fig. 2, the forming region 50 is formed by the male mold 51 on the male mold 10 and one female mold on the female mold 20. The hole 52 is composed of. Referring to FIGS. 3A and 3B together, the male mold cavity 51 is located on the parting surface 101 of the male mold 10, and a plurality of parallel flow paths 11 are usually disposed inside the male mold 10, and the position thereof corresponds to the foregoing. Male model point 51. However, most of the cooling circulating fluids in the parallel flow passages 11 can only cool the local position of the male mold cavity 51, so that not only the cooling region is uneven, but also a good heat exchange effect cannot be achieved, and the disadvantage is It takes a long cooling time after injection molding, and the formed product is prone to warpage. Referring again to FIGS. 4A and 4B, the aforementioned mother mold cavity 52 is located on the parting surface 201 of the female mold 20, and generally only an S-shaped flow path 21 is provided inside the conventional female mold 20, and its position corresponds to In the aforementioned mother mold cavity 52;
Client’s Docket No·: AU0704029 TT’s Docket No: o632-A5ili9tw /Final/林琼凯 5 200906593 然而該S形流道21不僅具有流路過長之缺點，且無法在 母模穴52左、右兩侧邊521上的熱洗道之間形成有效的 熱阻隔。由於母模20内部不同的熱澆道之間容易因熱傳 導以及熱輻射而導致模面溫度上升，進而影響成形的品 質，因此如何設計一種更佳的冷卻水路以有效降溫並防止 模具内部溫度失衡始成為一重要之課題。 【發明内容】 本發明提供一種射出成形模具組，用以製造一矩形塑 膠件，包括一公模以及一母模。前述公模具有一矩形公模 穴以及至少一條彎折流道，其中彎折流道具有一第一段部 以及一第二段部，且第一、第二段部分別靠近且平行於公 模穴相鄰之兩侧邊。前述母模與公模結合並具有一母模穴 以及複數個熱洗道，其中一塑料係經由等熱洗道注入公、 母模穴内，用以製造前述矩形塑膠件。 於一實施例中，前述公模更具有複數條平行流道，其 中前述平行流道係相互平行且橫越公模穴。 於一實施例中，前述公模具有兩條彎折流道，對應於 矩形公模穴的四個侧邊。 於一實施例中，前述第一、第二段部組成一 L形結構。 於一實施例中，前述公模更具有一連接部，凸出於公 模穴外侧並且連接第一、第二段部。 於一實施例中，前述母模更具有至少一分區流道，前 述分區流道具有至少一曲折部，且曲折部的位置係介於相 鄰之熱澆道之間。 於一實施例中，前述曲折部具有一 V形或U形結構。Client's Docket No·: AU0704029 TT's Docket No: o632-A5ili9tw /Final/林琼凯5 200906593 However, the S-shaped flow passage 21 not only has the disadvantage that the flow path is too long, and cannot be on the left and right side edges 521 of the female mold cavity 52. An effective thermal barrier is formed between the hot wash lanes. Since the different hot runners inside the master mold 20 are likely to increase the temperature of the mold surface due to heat conduction and heat radiation, thereby affecting the quality of the forming, how to design a better cooling water path to effectively cool the temperature and prevent the temperature inside the mold from being unbalanced Become an important issue. SUMMARY OF THE INVENTION The present invention provides an injection molding die set for manufacturing a rectangular plastic member including a male mold and a female mold. The male mold has a rectangular male mold hole and at least one curved flow passage, wherein the bent flow prop has a first section and a second section, and the first and second sections are respectively adjacent to and parallel to the male cavity phase. On both sides of the neighbor. The master mold and the male mold are combined and have a female mold cavity and a plurality of hot wash lanes, wherein a plastic is injected into the male and female mold holes through the equal heat wash lane to manufacture the rectangular plastic member. In one embodiment, the male mold further has a plurality of parallel flow paths, wherein the parallel flow paths are parallel to each other and traverse the male mold cavity. In one embodiment, the male mold has two curved flow passages corresponding to the four sides of the rectangular male mold cavity. In one embodiment, the first and second segments form an L-shaped structure. In one embodiment, the male mold further has a connecting portion protruding from the outside of the male cavity and connecting the first and second segments. In one embodiment, the master mold further has at least one divided flow channel, the partition flow channel has at least one meandering portion, and the bent portion is positioned between adjacent hot runners. In one embodiment, the meandering portion has a V-shaped or U-shaped configuration.
Client’s Docket No.: AU0704029 XT’s Docket No: o632-A5iii9tw /Final/林琼凱 6 200906593 【實施方式】 請參閱第5圖，該圖表示—射出成形模且 10内部冷卻水路以及公模穴51 、=、+中之么杈 的公模H)内部冷卻水路主要包㈣ϋ於本實施例中 兩亀細，其中該些平行===及 且k越公模穴51相對之兩惻邊512 .、，同向I伸亚 與平行流道12相互獨立，其]中\^ =彎折流道13則 5，。置則分別靠近且平行於公模穴5;:= 本實施例藉由在公模1〇内部 穴51的四個側邊進行 π，進而可大幅縮矩形塑膠件的冷 7 ^將前述彎折流道13與複數條平行“ 12相互t明 域内的温度平衡，藉以控制溫差並防口止 產扣在成形時產生翹曲變形。 路除於另—實施例中的公模内部冷卻水 道μ。於本實施例中，每—個 ' 更穴兩條彎折流 二段:”41、一第二段部142以及::接部：具第 一、第二段部14卜142分別靠近且 的側邊犯、512，前述連接部】丁出;;鄰 胸以連接前述第—、第二段部;4=二八， 發明之冷卻水路仍可視不同設計需求而彈性地=其=Client's Docket No.: AU0704029 XT's Docket No: o632-A5iii9tw /Final/Lin Qiongkai 6 200906593 [Embodiment] Please refer to Figure 5, which shows the injection molding die and 10 internal cooling water channels and male mold holes 51, =, + The main mold of the middle H ) H) The main cooling water circuit main package (4) ϋ in this embodiment is two thin, wherein the parallel === and k the more the male mold hole 51 opposite the two sides 512., the same direction I and the parallel flow channel 12 are independent of each other, and the \^ = bending flow path 13 is 5,. The arrangement is respectively close to and parallel to the male mold cavity 5;:= In this embodiment, the π is performed on the four sides of the internal cavity 51 of the male mold 1 , thereby further reducing the coldness of the rectangular plastic member. The flow channel 13 is parallel to the plurality of bars. 12 The temperature balance in the mutual field is controlled to control the temperature difference and prevent the warp deformation from occurring during the forming. The road is divided into the internal cooling water channel μ of the male mold in the other embodiment. In this embodiment, each of the two more curved two segments of the flow: "41, a second segment 142 and::: the first and second segments 14 142 are respectively close to Side guilt, 512, the aforementioned connection part] sing out;; adjacent chest to connect the first -, second section; 4 = 28, the inventive cooling water circuit can still be flexibly depending on different design requirements = its =
Chent s Docket No.： AU0704020 ^ TTs Docket No： 〇632-A5m9tvv9/Final/#I|，m 200906593 藉以周的方式來提高=^U、512, :之·“具組 實施例中之母模2〇内邻、人抑卜1稹八52之不意圖。於本 .分別對應於矩形母模要包”條分區流道 每-條分區流道22皆且右s ,，四個局部區域，其中 异，义、+、— ^ 、有至少一個曲折部221。特別蚰 疋則述母一曲折部221可 寸別也 則介於母模20内部相鄰的_^^开1構，其位置 熱濟道G間所產生的熱輕射與敎傳導，曰進不同 :溫度平衡。由於本實施例中的 == 且分別對應於母模穴52的四個 上白相互獨立 路太長而導致入水段222 # A # n二可=流 在不同熱綠""之間形成有效的熱阻隔Γ & %可 設，核明針對射出成形模具組中的公、母模 洲·逞以及一組彎折流道，並夢 植 ，、十仃 升冷卻效率；此外，在母王周的方式以提 道，其中每一條分^、…内#則可配置稷數條分區流 庙把加， 刀區极逼皆具有至少一個曲折部，且备一 曲折相位置係介於母模内部 ==道間所產生的熱輕射與熱傳導一之:= 後的冷卻時間’同時可在母模 於生產平面曰部的溫度平衡，不僅適用 、 千面鮮貝不态月光模組中的矩形膠框，更可卢、、乏+ 以生產其他各種矩形塑膠件。 廣泛地用 CMent's Docket No.： AU0704029 ITs Docket No: o632_A5ul9tw /Rnal/林琼凯 8 200906593 【圖式簡單說明】 第1圖係表示一矩形膠框之示意圖； 第2圖係表示一射出成形模具組之剖面圖； 第3A、3B圖係表示一習知射出成形模具組中之公模 内部冷卻水路以及公模穴之示意圖； 第4A、4B圖係表示一習知射出成形模具組中之母模 内部冷卻水路以及母模穴之示意圖； 第5圖係表示一射出成形模具組中的公模内部冷卻水 路以及公模穴之示意圖； 第6圖係表示另一實施例之射出成形模具組中的公模 内部冷卻水路以及公模穴之示意圖；以及 第7圖係表示一射出成形模具組中的母模内部冷卻水 路以及母模穴之示意圖。 【主要元件符號說明】 10〜公模； 13、14〜彎折流道； 132、142〜第二段部 20〜母模； 22〜分區流道； 222〜入水段， 30〜注料嘴； 50〜成形區域； 52〜母模穴； 101、201〜分模面； 11、12〜平行流道； 131、141〜第一段部； ;143〜連接部； 21〜S形流道； 221〜曲折部； 223〜出水段； 40、G〜熱澆道； 51〜公模穴； 511、512、521 〜侧邊； P〜膠框。Chent s Docket No.: AU0704020 ^ TTs Docket No: 〇632-A5m9tvv9/Final/#I|,m 200906593 By way of week to improve =^U, 512, :" "The master model 2 in the group embodiment 〇 Ne Ne Ne Ne Ne Ne Ne U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U U Different, meaning, +, - ^ have at least one meandering portion 221 . In particular, the mother-fig-folding portion 221 can be separated from the _^^1 structure in the interior of the master mold 20, and the heat and light generated between the heat-coded roads G are transmitted. Different: temperature balance. Since the == in the present embodiment and the four whitening independent paths respectively corresponding to the female cavity 52 are too long, the water inlet section 222 #A#n2 can be formed between different hot greens" The effective thermal barrier amp & % can be set to identify the male and female models in the injection molding die set and a set of bending flow paths, and dream planting, 10 liters of cooling efficiency; Wang Zhou’s way is to mention the way, in which each of the points ^, ... can be configured with a number of zonal flow temples, the knife area is extremely forced to have at least one zigzag part, and a zigzag position is placed in the mother Inside the mold == heat and light conduction between the channels: = the cooling time after the 'the temperature balance between the mother and the mold at the top of the production plane, not only applicable, thousands of fresh shells are not in the moonlight module The rectangular plastic frame is more lucratic and less than + to produce various other rectangular plastic parts. Widely used with CMent's Docket No.: AU0704029 ITs Docket No: o632_A5ul9tw /Rnal/林琼凯8 200906593 [Simplified Schematic] Figure 1 shows a schematic view of a rectangular frame; Figure 2 shows a section of an injection mold set. Figure 3A, 3B is a schematic view showing the internal cooling water passage and the male mold cavity of a conventional injection molding die set; Figs. 4A and 4B are diagrams showing the internal cooling of the master mold in a conventional injection molding die set; Schematic diagram of the water path and the female mold hole; Fig. 5 is a schematic view showing the internal cooling water passage and the male mold hole of the male mold in the injection molding die set; Fig. 6 is a view showing the male mold in the injection molding mold set of another embodiment; Schematic diagram of the internal cooling water passage and the male mold hole; and Fig. 7 shows a schematic diagram of the internal cooling water passage and the female mold cavity in the injection molding die set. [Main component symbol description] 10~mold; 13, 14~bend runner; 132, 142~second section 20~mother; 22~partition runner; 222~inlet, 30~ injection nozzle; 50~formed area; 52~mother mold hole; 101,201~ split mold surface; 11,12~parallel flow passage; 131,141~first section; ;143~joining section; 21~S-shaped flow passage; ~ tortuous part; 223 ~ water outlet section; 40, G ~ hot runner; 51 ~ male mold hole; 511, 512, 521 ~ side; P ~ plastic frame.
Client's Docket No.: AU0704029 9 TT’s Docket No: o632-A5iii9tw /Final/林琮凱Client's Docket No.: AU0704029 9 TT’s Docket No: o632-A5iii9tw /Final/林琮凯