1330126 (1) 九、發明說明 【發明所屬之技術領域】 本發明係關於將射出成形（包括射出壓縮成形）所成 形出之導光板從模具取出之導光板之取出裝置以及導光板 之取出方法，特別是關於行動電話等所使用之對角尺寸7 吋以下的導光板之取出裝置以及導光板之取出方法。 •【先前技術】 關於藉由射出成形（包括射出壓縮成形）所成形出之 導光板之取出方法，在專利文獻1中已有記載。專利文獻 1係關於大型導光板的成形，係在開模後吸附導光板，以 同時將導光板、流道及澆道取出。然而，在接下來的步驟 ，必須藉由其他裝置或人工來分離導光板、流道（runner )及澆道（sprue )。專利文獻1所記載之取出方法，係從 上側的兩根繫桿之間取出導光板後，將其移動至其他的裝 ® 載位置，因此在成形循環時間之縮短方面會發生問題。又 在專利文獻1中，係在導光板和澆道等維持一體的狀態下 ，吸附導光板而進行取出，爲了將澆道從固定模具中拔出 ，必須使包含流道（係咬入可動模具之凹部（咬入部）） 之澆道脫模，因此需要很大的吸附力。又由於剛成形出的 導光板溫度很高，若用較大吸附力進行導光板之吸附取出 ，可能會在導光板的面上留下痕跡。 〔專利文獻1〕日本特開2003-145593號公報（申請 專利範圍第4項、第2圖） -4- (2) 1330126 【發明內容】 本發明係有鑑於上述問題點而構成’其目的係提供一 種能將導光板和澆道各別取出之導光板之取出裝置以及導 光板之取出方法：並進一步提供一種能將取出時間縮短之 導光板之取出裝置以及導光板之取出方法。 本發明的請求項1所記載之導光板之取出裝置’係用 來將射出成形出之導光板從模具取出之導光板之取出裝置 φ ，其特徵在於：係設有：用來吸附成形出的導光板之吸附 保持部、用來把持澆道之夾頭，以將導光板和澆道以分離 的狀態取出。 依據本發明之導光板之取出裝置以及取出方法，由於 i 設有：用來吸附成形出的導光板之吸附保持部、用來把持 澆道之夾頭，而能將導光板和澆道以分離的狀態取出；相 較於僅保持導光板而同時取出導光板和澆道的情形，不僅 幾乎不會在導光板發生因取出造成的痕跡而出現不良品， ® 且取出後不須藉由其他裝置或人工來分離導光板和澆道。 【實施方式】 參照第1圖至第5圖來說明本發明的導光板之射出壓 縮成形模具。第1圖係從可動盤側朝固定盤側觀察本實施 形態的導光板之取出裝置的前視圖。第2圖係本實施形態 的導光板之取出裝置之側視圖。第3圖係本實施形態的導 光板之取出裝置之主要部分放大立體圖。第4圖係本實施 形態所使用的導光板之射出壓縮成形模具之截面圖。第5 圖係本實施形態的導光板之射出壓縮成形方法之流程圖。 -5- (3) 1330126 本實施形態之導光板P，係藉由屬於射 射出壓縮成形來成形出。射出壓縮成形，係 至成形結束時的期間可改變可動模具和固定 。因此，在閉模後的停止位置射出熔融樹脂 具前進而進行壓縮之所謂「射出模壓」形式 壓縮成形。在射出壓縮成形，相較於成形完 始射出前或開始射出後模穴呈稍打開的狀態 ® 具有高速射出能力之射出裝置，而能以較低 出熔融樹脂。又在開始射出後，使可動模具 動以壓縮熔融樹脂，因此在模穴之離澆口部 加快熔融樹脂的流動，以良好地進行微細圖 在切斷澆口後，在通常的射出成形模具，並 置進行保壓，但在射出壓縮成形的情形，可 融樹脂壓縮來對應於冷卻硬化所產生之收縮 縮成形，特別適用於板厚較薄（相較於光出 ·)之導光板的成形。 如第1圖、第2圖所示，在射出壓縮成: 具備加熱筒12a (內設螺桿）、噴嘴12b之身 及合模裝置14，配設於機床15上。合模裝丨 定於機床15之固定盤17(裝設有固定模具 機床1 5之受壓盤1 8之間，配設4根繫桿1 9 模具20之可動盤21，係以可移動的方式組 1 9。在受壓盤1 8上，配設用來進行開閉模 汽缸22 (開閉模及合模機構），前述合模汽 出成形領域之 在成形開始時 模具間的距離 後，使可動模 ，也屬於射出 成時，由於開 ，故不須使用 速、低壓來射 朝合模方向移 較遠的位置能 案的轉印。又 無法從射出裝 將模穴內之熔 。這種射出壓 射面等的面積 形機1 1，係將 ί出裝置1 3以 置14，係在固 16)和配設於 。裝設有可動 裝於前述繫桿 及合模之合模 缸22之衝柱 -6- (4) 1330126 22a係固定在可動盤21的背面。在本實施形態之開閉 合模機構，雖是使用藉由伺服閥控制之合模汽缸22, 能使用含有伺服馬達和滾珠螺桿之肘節機構。 其次說明，用來從射出壓縮成形機11之射出壓 形模具51取出成形出的導光板p之取出裝置。如第 及第2圖所示，取出裝置係具備：固定在固定盤17 操作側（操作盤之相反側）的上面之第1取出裝置23 ® 置在托架25(固定在反操作側的機床15)上之第2 裝置24。在第1取出裝置23，設有朝開閉模方向延 旋轉軸26，在與旋轉軸26正交的方向固設有臂部27 轉軸26，係藉由未圖示之第1伺服馬達和滾珠螺桿機 軸方向（開閉模方向）進退移動，且受未圖示之第2 馬達驅動而旋轉，其能以高精度進行高速動作及急停 此第1取出裝置23也稱爲搖臂式取出裝置。用來從 模具20直接取出導光板P等之第1取出裝置23的 ® 27，具有既定厚度，依接近旋轉軸26的順序，係由 構件27a (朝旋轉軸26之垂直方向設置）、第2構件 (相對於第1構件27a，連接設置於傾斜方向）、第 件27c (連接於第2構件27b，且朝第1構件27a之 垂直方向設置）三者一體所組成之大致L字狀的臂構 構成。前述第3構件27c，係以朝可動模具20之模穴 面附近的方式向內側彎曲。臂部27的形狀，在不千 桿19、安全門等的範圍內，也能採用兩邊所構成之直 、圓弧狀等其他的形狀。 模及 但也 縮成 1圖 的反 、設 取出 伸之 。旋 構在 伺服 。因 可動 臂部 第1 27b 3構 大致 件所 形成 涉繫 角形 (5) 1330126 如第3圖所示，第1取出裝置23的臂部27之第3構 件2 7c，整體爲具有固定模具側面和可動模具側面之板狀 ，在前端側形成朝向基部側之V槽28，在V槽28兩側形 成分枝部29a、29b。在前述V槽28之內側空間部配設夾 頭30。夾頭30，係藉由電磁式的作動裝置30a (配設於比 分枝部29a、29b的接合部分更靠基部側之固定模具側的 面）來使2個夾頭構件做開閉作動，以進行澆道P1把持 ® 或釋放。在前述分枝部29a、29b之接合部分附近之可動 模具側的面，配設反射型的檢測器3 1。前述檢測器3 1， 係檢測是否把持有澆道P 1，當澆道P 1的把持狀態不正常 時，使開閉模及合模機構停止動作。 相對於臂部27的第3構件27c，在垂直方向配設安裝 板32。安裝板32之上部至下部（比第3構件27c更上部 或更下部）的長度，係與待成形之導光板P之縱方向長度 一致。在該安裝板32之可動模具20側的面上，以朝向可 ® 動模具20側的方式，在安裝板32之上部兩部位、下部兩 部位’分別固設有用來吸附導光板P之吸附保持部33。 吸附保持部33係具備：多孔質彈性材料（海綿）之杯部 34、 用來將該杯部34安裝於安裝板32之捲絃狀的彈簧部 35、 以及配管36等等。杯部34，宜使用耐熱性優異的彈 性體’例如多孔質矽橡膠或多孔質氟橡膠。杯部3 4係具 備：厚度5mm左右之圓盤部34b (含有直徑8〜16mm之 吸附面34a)、位於其後方之v槽狀的縮頸部34c、位於 更後方之基部34d。前述基部34d，係固接於捲絃狀的彈 (6) 1330126 簧部35，前述彈簧部35的另一側則固定於安裝板32。吸 附面34a，在中心形成有直徑1mm左右的吸引孔34e，在 周圍形成微細的小孔，其整體呈平面狀。前述吸引孔34e ，係在軸方向貫穿前述圓盤部34b、縮頸部34c、基板34d ’且在基部34d側之吸引孔34e的開口部連接設置可撓性 樹脂構成之配管36。該配管36，係以通過前述彈簧部35 內部的方式’固定於臂部27而延伸出，並進接於未圖示 I之真空裝置。 固定於射出壓縮成形機1 1的反操作盤側的機床1 5側 面之托架25上’係設有第2取出裝置24，其係雙軸式的 移載機器人’亦即具備：以能旋轉驅動的方式配設於與射 出壓縮成形機11的開閉模方向平行的方向之第1旋轉軸 37、配設成能相對於固定軸38(固定於前述第1旋轉軸 37之垂直方向）進行旋轉之第2旋轉軸39。前述第1旋 _ 轉軸37、第2旋轉軸39,都是藉由未圖示之第3伺服馬 達及第4伺服馬達進行旋轉驅動，而能以高精度進行高速 動作及急停。 在第2旋轉軸39的前端固設臂部4〇。臂部4〇具有既 定厚度’依接近前述第2旋轉軸39的順序，係具備：與 前述第2旋轉軸39形成同軸之第1構件40a、相對於前述 第1構件40a以既定角度（在本實施形態，係相對直立方 向’朝射出壓縮成形機側傾斜約6 〇。）傾斜之第2構件 4 0b。第2取出裝置24能停在一定位置而使第丨取出裝 置23之父接位置（釋放位置）A2之吸附保持部33的排 (7) (7)1330126 列方向、和第2取出裝置24之交接位置（待機位置）B1 之第2構件40b的方向一致。 在臂部40之第2構件40b之固定模具16側的面上， 以和前述第1取出裝置23隔著相同間隔的方式配設吸附 保持部41。第2取出裝置24之吸附保持部41，係具備橡 膠墊之一般的吸附杯。吸附保持部41係經由彈簧安裝於 臂部40’未圖示之具有可撓性的樹脂配管係連接於前述吸 附杯之吸引孔。又前述樹脂配管係通過彈簧內部而固定於 臂部40’並進接於未圖示之真空裝置，這點是和第丨取出 裝置2 3相同。 隔著第2取出裝置24而在射出壓縮成形機11之相反 側（反操作側）的地板上，在比前述第2取出裝置24之 第1旋轉軸37更低的位置配設帶式輸送機42。帶式輸送 機42爲一般型，藉由未圖示之馬達而將既定寬度的橡膠 皮帶43實施間歇驅動。 如第1圖及第2圖所示，在射出壓縮成形機11之反 操作側的機床15側面，在第2取出裝置24之射出裝置13 側配設上方開口之漏斗狀的滑槽44。滑槽44，係配設於 第1取出裝置23之交接位置（釋放位置）A2的下方，以 在第1取出裝置23釋放澆道P1時將該澆道P1予以收集 (當作收谷構件）。在第1圖、第2圖，關於滑槽44下 方的管45 ’並未記載其整個管路（自中途省略），其可採 用以下設計：使澆道P1落至未圖示之收集箱；或是使管 路連接至射出裝置的上部，用空氣等手段搬送前述澆道 -10- (8) 13.30126 pi ’將其從射出裝置的投入口投入而進行回收使用。在取 出裝置23、24之移動區域及可動模具20之移動區域，係 設有安全門以及防護柵等，在此省略其等的圖示。 接著用第4圖來說明本實施形態的導光板之射出壓縮 成形模具51。射出壓縮成形模具51，係由第1模具之可 動模具20和第2模具之固定模具16所組成，在合模後之 兩模具20、16之間，形成有容積及厚度可變之模穴C1、 ® C2(適用於射出壓縮成形或射出模壓成形）。可動模具 20係具備：模具本體部52、模芯部53、可動框部54等等 。模芯部53係固接於模具本體部52,設於其周圍之可動 框部54係藉由彈簧5 4a安裝於模具本體部52。因此在可 動框部20，模芯部5 3和可動框部54在開閉模方向之相對 位置可改變。在模芯部53，固定有兩個模穴形成塊55、 55，在模穴形成塊55、55分別形成有模穴形成面55a、 5 5 a ° 0 在模具本體部52及模芯部53之中央部之與固定模具 16的澆道襯套64相對向的位置，配設頂出裝置之突出銷 56(藉由未圖示之驅動裝置前進，藉由彈簧而後退）。在 前述突出銷56之前端面’設有用來將湊道P1拉向可動模 具20側之咬入部56a。從前述咬入部56a朝各模穴形成面 55a形成有流道形成面57(用來形成流道P2)。在可動模 具20，以鄰接於模穴形成塊55的方式配設有澆口切斷具 58(藉由未圖不之驅動裝置則進’藉由彈賛而後退）。虽 湊口切斷具58前進時’藉由和固定模具16之固定澆口切 -11 - (9) (9)13.30126 斷具65交錯’能將澆口 P3切斷。在可動模具2〇內設有 兩系統的流路’亦即包括：用來冷卻模穴形成面55a之模 穴用冷卻媒體流路59、用來冷卻流道形成57和突出銷56 等之冷卻媒體流路60。 第2模具之固定模具16係具備：模具本體部61、形 成有模穴形成面62a之模穴形成塊62、嵌塊63、澆道襯 套64、固定澆口切斷具65、抵接塊66等。澆道襯套64 係從噴嘴12b射出熔融樹脂時的通路，嵌塊63的表面係 構成流道形成面67。固定澆口切斷具65係設置成，和模 穴形成塊62相鄰’且能和澆口切斷具58交錯。在固定模 具16內設有兩系統的流路，亦即包括：用來冷卻模穴形 成面02a之模穴用冷卻媒體流路69、用來冷卻流道形成面 67以及澆道襯套64等之澆道用冷卻媒體流路70。在本實 施形態，在射出壓縮成形模具5 1沿縱向配設2個模穴C 1 、C2 ’但也能沿水平方向形成2個模穴，模穴的數目可爲 1個或4個等的複數。對應於前述模穴的數目、配置，來 決定取出裝置的吸附保持部之數目和配置。 接著，用第5圖之流程圖來說明，使用本實施形態的 射出壓縮成形機11之導光板P的射出壓縮成形方法。在 本實施形態，係將對角尺寸3吋、板厚0_4mm之導光板P 用4.4秒的成形循環時間來進行成形。其中，開模時間 〇 _ 5秒，取出時間0 · 4秒，閉模時間〇 . 5秒，從開始開模經 取出導光板P到閉模完成之時間爲1 .4秒。又該從開始開 模經取出導光板P到閉模完成之時間宜爲2.2秒以內（ -12- (10) 1330126 0.75〜2·2秒），更佳爲1.5秒以內（0.75〜1.5秒）。從 閉模完成經射出到開始開模的時間爲3.0秒，其中，中間 時間及增壓時間〇 . 1秒，射出時間〇 . 〇 5秒，保壓時間〇 . 4 5 秒，冷卻時間2.4秒（實質上的冷卻是從開始射出才進行 )。然而，該從閉模完成經射出到開始開模的時間，依導 光板的形狀（面積、板厚、轉印面形狀）而在2.5〜9秒 的範圍內改變，爲了縮短成形循環時間宜爲6秒以內（ ® 2.5〜6秒），更佳爲4秒以內（2·5〜4秒）。在本實施形 態，在用來冷卻可動模具20的模穴形成面55a之模穴用 冷卻媒體流路5 9、用來冷卻流道形成面5 7附近及突出銷 56之冷卻媒體流路60、用來冷卻固定模具1 6的模穴形成 面62a之模穴用冷卻媒體流路69、用來冷卻流道形成面 67及澆道襯套64等之澆道用冷卻媒體流路70中，係流過 被調溫器控制成80〜120 °C左右（比成形用的樹脂之聚碳 酸酯之玻璃轉化溫度Tg低30〜100 °C )之冷卻媒體（冷 ® 卻水）。澆道用冷卻媒體流路7 0中之冷卻媒體溫度比其 他流路爲低，如此可促進冷卻最耗時間之澆道P 1的冷卻 ，而防止牽絲之發生。 此外，加熱筒12a之前部區域（最接近噴嘴的區域） 的溫度設定爲340°C，並對聚碳酸酯之熔融樹脂進行計量 。在使用聚碳酸酯時前述加熱筒12a之前部區域的溫度設 定，宜將溫度設定爲高溫之330〜380 °C。藉由作動合模汽 缸22(開閉模及合模機構），使組裝於可動盤21之可動 模具20抵接在組裝於固定盤17之固定模具16，以進行閉 -13- (11) 13.30126 模。接著將合模力昇高至50〜20 0kN以進行合模。藉此， 抵抗彈簧54a的彈壓力而使可動模具20之模具本體部52 和可動框部54抵接，使可動框部54相對於模芯部53位 於最後退的位置。又在固定模具16和可動模具20之間， 形成有流道P2(包含厚度可變的澆口 P3)以及連接於該 澆口 P3之厚度可變的模穴C1、C2。這時，基於使模穴 Cl、C2內的熔融樹脂流動之觀點，較佳爲對模穴Cl、C2 Φ 內的空氣進行吸引。 接著當經過既定的遲延時間後，從未圖示之射出裝置 13的噴嘴12b經由澆道襯套64以100〜200mm/sec的射 出速度射出熔融樹脂。可動盤21及可動模具20之模芯部 53等，受到射出時的壓力而再度後退。如此般，可動模具 20之可動框部54，係位於比模芯部53更前方的位置，固 定模具16之模穴形成面62a和可動模具20的模穴形成面 5 5 a之間隔，相較於最初合模力作用的位置，係加寬最大 ® 爲50〜200 μιη。由於可動模具20之模芯部53後退，熔融 樹脂可射出至澆口 Ρ3截面積變大之模穴Cl、C2內，而能 減少熔融樹脂之流動損失。結果，能用較低速、低壓來射 出熔融樹脂，特別是能抑制導光板Ρ的澆口附近發生內部 應力。 當射出裝置13之螺桿位置到達既定的保壓切換位置 時，從射出控制切換成壓力控制之保壓控制。當切換成保 壓控制後，合模汽缸22仍以高合模力進行合模，在切換 成保壓控制並經過一定時間後，減少合模力。也能在保壓 -14- (12) 1330126 切換之同時減少合模力。在本實施形態，於降低合模力之 大致同時，藉由未圖示之驅動裝置，使澆口切斷具58前 進0.45〜0.8mm，以進行澆口 P3之切斷。這時，係使可 動模具20之澆口切斷具58和固定模具16之澆口切斷具 65交錯，以進行澆口 P3之切斷。又在進行澆口切斷時， 當然澆口 P3之熔融樹脂尙未到達完全硬化的狀態。 在藉由澆口切斷具58進行澆口 P3之切斷後，澆口切 ® 斷具58保持於前進位置。如此般，雖變得無法從射出裝 置1 3側對模穴C 1、C2內之熔融樹脂進行完全地保壓，但 經由合模汽缸22之驅動而使可動模具20前進，可對模穴 Cl、C2內之熔融樹脂進行壓縮，即使因冷卻而發生收縮 仍不致產生凹陷，而能進行良好的轉印成形。在這期間， 在射出裝置1 3之加熱筒1 2a係進行下個成形所使用之熔 融樹脂的計量。在冷卻時間結束前，經由可動模具20之 可動框部5 4和模穴形成塊5 5間之空氣通路、固定模具1 6 I 之模穴形成塊62和嵌塊66間之空氣通路等，開始進行朝 向模穴C1、C2之脫模用空氣的供應（噴吹空氣）。接著 作動合模汽缸22而依序進行排壓、開模。從保壓結束至 開始開模（包含排壓）爲止之冷卻時間，在本實施形態爲 2‘4 秒。 然後作動合模汽缸22，使可動盤21及可動模具20移 動而進行開模。在開始進行開模時，可動模具2 0之突出 銷56前端之咬入部56a會咬入澆道P1 (包含流道P2)， 如此可將澆道P1從固定模具16之澆道襯套64拔出。又 -15- (13) 13-30126 關於導光板P，藉由可動模具20的凹狀模具形狀，其被 保持於模穴形成面55a而以此狀態進行開模。因此，經澆 口切斷後之澆道P1 (包含流道P2)和導光板P雙方以分 離的狀態被保持於可動模具20，並朝開模方向移動。在開 模的同時，在固定模具16停止噴吹脫模用空氣。在本實 施形態，從可動模具2 0開始進行開模至開模完成的時間 爲0.5秒，該開模時間可在0.3〜0.6秒之間做改變。又開 ® 模行程（大致等於開模完成時固定模具16和可動模具20 的間隔）爲60〜100mm。 當接收到開模完成所發出之開模完成訊號時，第1取 出裝置23之旋轉軸26會朝第1圖之反時針方向旋轉，而 使臂部27和吸附保持部33等從待機位置A3移動並停止 於與開模後的可動模具20附近之導光板P相對向的位置 。接著，使前述旋轉軸26朝開模方向移動15〜30 mm，臂 部27和吸附保持部33等移動至保持位置A1。藉此，吸 ® 附保持部33的杯部34之吸附面3 4a各個，會抵接於導光 板P之反射面（藉由固定模具16之模穴形成面62a所轉 印成形出）。對第1取出裝置23的吸附保持部33進行之 空氣吸引，係在前述取出裝置23開始作動時就同時進行 ，因此當吸附面34a抵接時會同時進行吸附。這時的吸引 力係採用-50〜-120kpa左右之較弱吸引力，以避免在剛 成形出的導光板P上形成痕跡。又由於吸附保持部33的 杯部34係由多孔質的彈性材料（海綿）所構成，吸附面 3 4a全體會吸附在導光板P上，如此更加能避免在導光板 (14) 1330126 P上形成痕跡。又在本實施形態，成形循環時間僅4.4秒 ，成形出的導光板P之熱量會傳至杯部34而使其到達一 定以上的溫度，這點也是避免發生痕跡的要素之一。 在第1取出裝置23移動至保持位置Ai的同時，檢測 器31會進行以下檢測’亦即，從澆道襯套64拔取之澆道 P1是否正常地位在V槽2 8內側之夾頭3 0的夾頭構件間 。當檢測器31檢測出澆道P1時，藉由電磁式作動裝置使 ® 夾頭30閉合，而用夾頭30把持澆道P1 (包含流道P2) 。當藉由吸附保持部33吸附住導光板P，且藉由夾頭30 把持住澆道P1 (包含流道P2)時，第1取出裝置23之旋 轉軸26及臂部27再度朝閉模方向稍微移動，而使導光板 P從模穴形成面55a脫模，同時使澆道Pi (包含流道P2 )脫離突出銷56前端之咬入部5 6a。在前述第1取出裝置 23進行導光板P及澆道P1 (包含流道P2)之脫模期間， 可動模具20同樣進行脫膜用空氣之供應，以輔助導光板 ® P等的成形。也能使可動模具之可動框部的一部分向外打 開，或使模穴形成面前進，以更容易進行導光板P之取出 〇 接著，第1取出裝置23之旋轉軸26朝第1圖之順時 針旋轉’當臂部27搖動至二點鏈線所示的位置（第1取 出裝置23和第2取出裝置24在第1圖中重疊的位置）時 ，停止旋轉軸26之旋轉。然後，第1取出裝置23之旋轉 軸26再度朝開模方向移動，而使臂部27和吸附保持部33 等移動至交接位置（釋放位置）A2。在本實施形態，從第 -17- (15) 1330126 1取出裝置23開始作動，將導光板P和澆道P1以分離的 狀態取出，再移動至交接位置（釋放位置）A2，總共所須 時間爲0.4秒，在這期間同樣進行導光板P之冷卻。 第2取出裝置24之臂部40係停止而待機於第1圖之 實線位置，以在交接位置（釋放位置）A2接收來自第1 取出裝置23之導光板P。又第2取出裝置24之吸附保持 部41，在抵接於導光板P之前已開始進行空氣吸引。相 ® 較於第1取出裝置23之吸附保持部33，第2取出裝置24 之吸附保持部41係以更低真空度進行強力的空氣吸引。 接著第1取出裝置23朝開模方向移動，當導光板p之藉 由可動模具20之模穴形成面55a所形成的面（本實施形 態爲光出射面）藉由第2取出裝置24之吸附保持部41抵 接而進行吸附時’在第1取出裝置23之吸附保持部33停 止進行空氣吸附，馬上使第1取出裝置23後退，而由第2 取出裝置24接收導光板P。 ® 在交接位置（釋放位置）A2，夾頭30打開，而使第 1取出裝置23之夾頭30所把持之湊道pi (包含流道p2 )落到下方之滑槽44內。打開夾頭30使澆道P1落下的 動作’雖可在澆道P1交接的同時進行，但澆道P1落下可 能會接觸導光板P的情形，可在導光板P從第1取出裝置 23交接至第2取出裝置24且第丨取出裝置23朝閉模方向 後退之後，再進行該動作。當導光板P交接至第2取出裝 置24且澆道P1落下後’第1取出裝置23之臂部27移動 至第1圖之一點鏈線所不之待機位置A3。待機位置A3, -18- (16) 1330126 在不干涉可動模具20之移動區域且不受模具的熱影響等 之範圍內，越靠近可動模具20等的位置越有助於縮短成 形循環時間。 當第1取出裝置23交接導光板P時，在其後退之同 時，第2取出裝置24之第1旋轉軸37會朝第1圖之反時 針方向旋轉，使固定於第1旋轉軸37的垂直方向上之固 定軸38搖動，在此同時，安裝於固定軸38之第2旋轉軸 ® 39也旋轉90°，伴隨前述第2旋轉軸39之旋轉，相對於 臂部40之第1構件40a呈傾斜設置之第2構件40b也旋 轉90°，而使吸附保持部41和其所保持之導光板P面向下 方。又當臂部40搖動至第1圖之二點鏈線所示之釋放位 置B2時’第1旋轉軸37停止旋轉且臂部40停止搖動。 接著停止對吸附保持部41進行空氣吸引，以反射面向下 的方式釋放導光板P，使其落到帶式輸送機42之橡膠皮 帶43上。在本實施形態，雖是在與橡膠皮帶43的移動方 ® 向正交的方向上使兩片導光板P落下，但由於以極短距離 落至橡膠皮帶43上方，並不會造成導光板P損傷。 釋放導光板P後之第2取出裝置24，以和前述相反 的方式使第1旋轉軸37及第2旋轉軸30旋轉，而再度返 回交接位置（待機位置）B1。以能裝載下個導光板P之方 式’將帶式輸送機42實施間歇驅動，而使橡膠皮帶43以 一定距離向前進給。在橡膠皮帶43上，繼續進行導光板 P之冷卻’之後用人工或機器人進行捆包作業。 第1取出裝置23和第2取出裝置24，係由配設於射 -19- (17) 1330126 出壓縮成形機11內之未圖示的取出裝置用控 。前述取出裝置用控制器，係連接於未圖示之 形機11的控制器。因此，接收來自射出壓縮域 開始開模訊號而進行第1取出裝置23之空氣 開模完成訊號而使第1取出裝置23之臂部27 又按照第1取出裝置23之臂部27的動作，開 取出裝置24之空氣吸引和臂部40的動作。當 • 置23移動至可動模具20外部之交接位置（釋: 後，發出開始閉模訊號而進行閉模動作。在本 從可動模具20之開始閉模至閉模完成時間爲 閉模時間可在〇 · 3〜0.6秒的範圍內調整。例如 壓縮成形機11、射出壓縮成形模具51之耐久 安定性等的觀點，有時不一定要追求最高速的 閉模速度。 在本實施形態，取出裝置23、24係採用搖 ® 台取出裝置23、24在交接位置進行導光板P 此設計的理由主要爲縮短循環時間。在本實施 裝置取出導光板P所須的時間（從開模完成且: 置23之臂部27位於待機位置A3開始動作， 位置A1取出導光板P，離開可動模具20之移 交接位置（釋放位置）A2，迄發出開始閉模訊 間）爲〇 . 4秒。前述時間可爲0.1 5〜1.0秒的 望縮短成形循環時間的情形，能在0.15〜0.4 進行。爲了進一步避免吸附保持部33之痕跡 制器所控制 射出壓縮成 ^形機11之 吸引，接收 開始旋轉。 始進行第2 第1取出裝 放位置）A 2 實施形態， 0.5秒，該 ，基於射出 壽命、計量 開模速度、 臂式，使2 之交接，如 形態，取出 第1取出裝 經由在保持 動區域到達 號爲止的時 範圍1虽希 秒的範圍內 附著在成形 (Ο -20- (18) 1330126 後高溫之導光板P上，可降低吸附保持部33之抵接速度 ’或等到可動模具20噴吹出更多的脫模用空氣（噴吹空 氣），但在這時較佳爲，所須時間最多延長到1 . 〇秒左右 〇 此外，藉由使可動模具20之開閉模動作和取出裝置 23的動作有一部分重疊，可進一步將成形循環時間縮短 0 · 3〜0.5秒左右。例如，在檢測出移動至開模即將完成前 • 的位置之可動模具20時，使取出裝置23之臂部27動作 ’藉此使開模動作和臂部2 7之侵入動作重疊，以縮短成 形循環時間。另外，藉由極限開關等檢測出臂部27和吸 附保持部33等已從可動模具20之可動區域移動至外部， 在其到達交接位置A2之前發出開始閉模訊號，藉此使閉 模動作和臂部27之退出動作重疊，亦可縮短成形循環時 間。 關於本發明，雖未逐一列舉，但並不限於上述實施形 ® 態，當然也包括熟習此技藝人士根據本發明的要旨所做的 改變。關於搖臂式之第1取出裝置，只要至少能使臂部搖 動者即可’亦可計設成：臂部整體不會朝開閉模方向移動 ’而僅臂部前端之吸附保持部朝開閉模方向移動。也能設 計成：第1取出裝置不會朝開閉模方向移動，第2取出裝 置可在開閉模方向移動以進行交接，這時，爲了使來自模 具之導光板吸附於第1取出裝置，可在模具另外設置構機 ，或使可動盤稍微前進。又關於第1取出裝置及第2取出 裝置之裝載位置，可在機床、固定盤上、地板之裝載台上 -21 - (19) 1330126 等做選擇。又在本發明，係藉由第1取出裝置，在模具外 部之釋放位置將導光板和澆道以分離的狀態取出，因此第 2取出裝置並非必須。例如可設計成，在搖臂式之第1取 出裝置之臂部進一步增加旋轉軸，在釋放位置使導光板呈 水平狀態，以直接釋放並裝載於輸送機上。關於第1取出 裝置之吸附保持部，可採用通常的橡膠墊或複數段的伸縮 囊型（bellows type)，材質可採用聚氨酯橡膠、丁腈橡 ® 膠等等，並沒有特別的限定。關於取出裝置，也能採用沿 水平方向移動於可動模具附近之保持位置和模具外部的釋 放位置間之水平移動式的取出裝置。這時，取出所須時間 爲0.8〜2.2秒。關於水平移動式的取出裝置，係設有：用 來吸附導光板之吸附保持部、用來把持澆道之夾頭，且將 導光板和澆道以分離的狀態取出。吸附保持部宜使用矽橡 膠等的多孔質彈性材料。 又在本實施形態，雖是針對對角尺寸3吋之行動電話 ® 用的導光板之射出壓縮成形模具作說明，但導光板之尺寸 可爲1.5吋以上7吋以下的範圍。又關於導光板的形狀， 除板厚均一之導光板以外，也包括：板厚從光入射面側朝 另一側越來越薄之楔型導光板，能使背光等的光源透過之 光擴散板、透鏡等等。又關於導光板之成形所使用之樹脂 ，雖僅記載聚碳酸酯的例子，但只要光學性能優異即可， 例如可使用甲基丙烯酸樹脂、環烯烴聚合物樹脂等等。由 於依樹脂的種類，熔融樹脂之溫度及玻璃轉化溫度會有不 同，當然澆口切斷之時點、冷卻媒體之溫度、成形循環時 -22- (20) 1330126 間等等也會有所不同。 又本實施形態之導光板P，由於板厚0.4mm而採用射 出壓縮成形方法，但在板厚0.2〜0.4mm左右的情形，可 使用射出模壓方法。射出模壓方法，在閉模位置最初形成 模穴之間隔寬廣的狀態，而從低合模力或合模力接近0的 狀態進行增壓，因此即使板厚極薄的情形仍能以較低速低 壓來進行射出。又在本實施形態，係針對在水平方向進行 # 開閉模之射出壓縮成形機上所裝設之射出壓縮成形模具作 說明，但也能適用於在垂直方向進行開閉模者。 在上述實施形態，係針對可動框部5 4可相對模芯部 5 3改變位置之平抵型模具作說明，但本發明也能適用於， 一方模具之凸部嵌合於另一方模具之凹部內而在其間形成 容積可變的模穴之所謂嵌合型模具。另外，在本實施形態 ，係在模具內藉由澆口切斷具將澆口完全切斷，但也能使 取出裝置之夾頭具備：使澆道相對導光板移動的作用或切 ® 斷作用等等，而藉由取出裝置來將導光板和澆道分離後取 出。 【圖式簡單說明】 第1圖係從可動盤側朝固定盤側觀察本實施形態的導 光板之取出裝置的前視圖。 第2圖係本實施形態的導光板之取出裝置之側視圖。 第3圖係本實施形態的導光板之取出裝置之主要部分 放大立體圖。 { E; -23- (21) (21)13-30126 第4圖係本實施形態所使用的導光板之射出壓縮成形 模具之截面圖。 第5圖係本實施形態的導光板之射出壓縮成形方法之 流程圖。 【主要元件符號說明】 1 1 :射出壓縮成形機 16 :固定模具 1 7 :固定盤 20 :可動模具 21 :可動盤 23 :第1取出裝置 24 :第2取出裝置 30 :夾頭 3 3 :吸附保持部 42 :帶式輸送機 A1 :保持位置 A2 :交接位置（釋放位置） A3 :待機位置 B 1 :交接位置（待機位置） B2 :釋放位置 P :導光板 P1 :澆道 P2 :流道 P3 :澆口 -24-1330126 (1) The present invention relates to a light-receiving device for taking out a light guide plate formed by injection molding (including injection compression molding) from a mold, and a method for taking out the light guide plate. In particular, it is a device for taking out a light guide plate having a diagonal size of 7 吋 or less used for a mobile phone or the like, and a method of taking out the light guide plate. [Prior Art] A method of taking out a light guide plate formed by injection molding (including injection compression molding) has been described in Patent Document 1. Patent Document 1 relates to the formation of a large light guide plate by adsorbing a light guide plate after mold opening to simultaneously take out the light guide plate, the flow path, and the runner. However, in the next step, the light guide, the runner, and the sprue must be separated by other means or by hand. In the take-out method described in Patent Document 1, the light guide plate is taken out from between the two tie bars on the upper side, and then moved to another mounting position, which causes a problem in shortening the molding cycle time. Further, in Patent Document 1, the light guide plate is sucked and taken out while the light guide plate and the runner are maintained in an integrated state, and in order to remove the runner from the fixed mold, it is necessary to include the flow path (the bite into the movable mold) The runner of the recess (biting portion) is demolded, so a large adsorption force is required. Further, since the temperature of the newly formed light guide plate is high, if the light guide plate is sucked and taken out with a large adsorption force, traces may be left on the surface of the light guide plate. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2003-145593 (Patent Application No. 4, No. 2) -4- (2) 1330126 [Description of the Invention] The present invention has been made in view of the above problems. A take-out device for a light guide plate capable of taking out a light guide plate and a sprue, and a method for taking out the light guide plate are provided: and further, a take-out device for the light guide plate capable of shortening the take-out time and a method for taking out the light guide plate are provided. The apparatus for extracting a light guide plate according to claim 1 of the present invention is a take-out device φ for a light guide plate for taking out a light guide plate from which a preform is taken out from a mold, and is characterized in that: The adsorption holding portion of the light guide plate and the chuck for holding the runner to take out the light guide plate and the runner in a separated state. According to the present invention, the light guide plate take-out device and the take-out method are provided, wherein the light guide plate and the runner are separated by the adsorption holding portion for adsorbing the formed light guide plate and the chuck for holding the runner. The state is taken out; compared with the case where only the light guide plate is held while the light guide plate and the runner are taken out, not only the defect caused by the removal of the light guide plate but also the defective product may occur, and the device does not need to be used by other devices after removal. Or manually separate the light guide and the runner. [Embodiment] An injection compression molding die of a light guide plate of the present invention will be described with reference to Figs. 1 to 5 . Fig. 1 is a front elevational view of the take-up device of the light guide plate of the present embodiment as seen from the movable disk side toward the fixed disk side. Fig. 2 is a side view showing the take-out device of the light guide plate of the embodiment. Fig. 3 is an enlarged perspective view showing the main part of the light-receiving device of the present embodiment. Fig. 4 is a cross-sectional view showing the injection compression molding die of the light guide plate used in the embodiment. Fig. 5 is a flow chart showing a method of injection compression molding of the light guide plate of the embodiment. -5- (3) 1330126 The light guide plate P of the present embodiment is formed by injection compression molding. The injection molding is performed until the movable mold and the fixing are changed during the end of the forming. Therefore, in the stop position after the mold is closed, the so-called "injection molding" compression molding in which the molten resin material is advanced and compressed is emitted. In the injection compression molding, the mold cavity is slightly opened before the injection is completed or after the injection is started. ® The injection device having a high-speed injection capability can lower the molten resin. Further, after the start of the injection, the movable mold is moved to compress the molten resin, so that the flow of the molten resin is accelerated in the gate portion of the cavity, so that the fine pattern can be satisfactorily cut, and then the normal injection molding die is formed. The pressure is maintained by juxtaposition, but in the case of injection compression molding, the meltable resin is compressed to correspond to shrinkage shrinkage by cooling and hardening, and is particularly suitable for forming a light guide plate having a thin thickness (compared to light out). As shown in Fig. 1 and Fig. 2, the injection is compressed to include a heating cylinder 12a (with a screw), a nozzle 12b, and a mold clamping device 14, which are disposed on the machine tool 15. The mold clamping device is fixed between the fixed plate 17 of the machine tool 15 (with the pressure plate 18 of the fixed mold machine tool 15 and the movable plate 21 of the four tie rods 19 and the mold 20). The mode group 19 is provided on the pressure receiving disk 18 for opening and closing the mold cylinder 22 (opening and closing mold and clamping mechanism), and the distance between the molds at the start of forming in the field of the mold forming and forming is made The movable mold also belongs to the time when the injection is made, and since it is opened, it is not necessary to use the speed and the low pressure to shoot the transfer at a position far away from the mold clamping direction, and it is impossible to melt the mold cavity from the injection device. The area machine 1 1 that emits the pressure surface or the like is placed on the device 1 3 to be placed in the solid 16) and disposed. A punch 6-(4) 1330126 22a which is movably mounted on the above-mentioned tie rod and the mold clamping cylinder 22 is fixed to the back surface of the movable plate 21. In the opening and closing mold clamping mechanism of the present embodiment, the clamp cylinder 22 controlled by the servo valve is used, and a toggle mechanism including a servo motor and a ball screw can be used. Next, a take-out device for taking out the formed light guide plate p from the injection molding die 51 of the injection compression molding machine 11 will be described. As shown in Fig. 2 and Fig. 2, the take-out device includes a first take-up device 23 that is fixed to the upper side of the operation side (opposite side of the operation panel) of the fixed disk 17 and is placed on the carriage 25 (a machine tool fixed to the reverse operation side) 15) The second device 24 on. The first take-out device 23 is provided with a rotating shaft 26 extending in the direction of the opening and closing mold, and an arm portion 27 is fixed to the direction perpendicular to the rotating shaft 26, and is provided by a first servo motor and a ball screw (not shown). The machine shaft direction (opening and closing mold direction) moves forward and backward, and is driven by a second motor (not shown) to rotate, and can perform high-speed operation and emergency stop with high precision. This first take-out device 23 is also called a rocker type take-out device. The ® 27 for taking out the first take-up device 23 such as the light guide plate P directly from the mold 20 has a predetermined thickness, and is in the order of approaching the rotating shaft 26, and is provided by the member 27a (in the vertical direction of the rotating shaft 26), and second. A substantially L-shaped arm composed of a member (connected to the first member 27a in the oblique direction) and a member 27c (connected to the second member 27b and disposed in the vertical direction of the first member 27a) Structure. The third member 27c is bent inward toward the vicinity of the cavity face of the movable mold 20. The shape of the arm portion 27 can be other shapes such as a straight shape or an arc shape formed on both sides without being in the range of a thousand levers 19 or a safety gate. The mold and the result are also reduced to the reverse of the 1 figure, and the set is taken out. The structure is on the servo. As shown in Fig. 3, the third member 27c of the arm portion 27 of the first take-up device 23 has a fixed mold side surface as shown in Fig. 3, as shown in Fig. 3, The movable mold has a plate shape on the side surface thereof, and a V-groove 28 facing the base side is formed on the front end side, and branch portions 29a and 29b are formed on both sides of the V-groove 28. A chuck 30 is disposed in the inner space portion of the V-groove 28. In the chuck 30, the two chuck members are opened and closed by the electromagnetic actuator 30a (the surface on the fixed mold side on the base side of the joint portion of the branch portions 29a and 29b). Sprue P1 holds or releases. A reflective detector 31 is disposed on the movable mold side surface in the vicinity of the joint portion of the branch portions 29a and 29b. The detector 3 1 detects whether or not the runner P 1 is held, and when the holding state of the runner P 1 is abnormal, the opening and closing mold and the mold clamping mechanism are stopped. The mounting plate 32 is disposed in the vertical direction with respect to the third member 27c of the arm portion 27. The length from the upper portion to the lower portion of the mounting plate 32 (upper or lower than the third member 27c) coincides with the longitudinal direction of the light guide plate P to be formed. On the surface of the mounting plate 32 on the side of the movable mold 20, the two portions of the upper portion of the mounting plate 32 and the lower portion are respectively fixed to the side of the movable mold 20 to adsorb and hold the light guide plate P. Part 33. The adsorption holding portion 33 includes a cup portion 34 of a porous elastic material (sponge), a coil-shaped spring portion 35 for attaching the cup portion 34 to the mounting plate 32, a pipe 36, and the like. As the cup portion 34, an elastic body excellent in heat resistance, for example, a porous enamel rubber or a porous fluororubber is preferably used. The cup portion 34 has a disk portion 34b having a thickness of about 5 mm (including an adsorption surface 34a having a diameter of 8 to 16 mm), a v-shaped constricted portion 34c at the rear side thereof, and a base portion 34d located further rearward. The base portion 34d is fixed to the bobbin-shaped spring (6) 1330126 spring portion 35, and the other side of the spring portion 35 is fixed to the mounting plate 32. The suction surface 34a is formed with a suction hole 34e having a diameter of about 1 mm at the center, and fine pores are formed around the center, and the entire surface thereof is flat. The suction hole 34e is connected to the disk portion 34b, the constricted portion 34c, and the substrate 34d' in the axial direction, and a pipe 36 made of a flexible resin is connected to the opening of the suction hole 34e on the side of the base portion 34d. The pipe 36 is extended to the arm portion 27 so as to pass through the inside of the spring portion 35, and is introduced into a vacuum device (not shown). A second take-up device 24 is attached to the bracket 25 on the side surface of the machine tool 1 5 on the opposite side of the injection compression molding machine 1 , and the double-axis transfer robot ′ is provided to be rotatable. The driving method is disposed so as to be rotatable with respect to the fixed shaft 38 (fixed in the vertical direction of the first rotating shaft 37) in the first rotating shaft 37 in the direction parallel to the opening and closing mold direction of the injection compression molding machine 11. The second rotating shaft 39. The first rotary shaft 37 and the second rotary shaft 39 are rotationally driven by a third servo motor and a fourth servo motor (not shown), and high-speed operation and emergency stop can be performed with high precision. The arm portion 4 is fixed to the distal end of the second rotating shaft 39. The arm portion 4 has a predetermined thickness 'in proximity to the second rotating shaft 39, and includes a first member 40a coaxial with the second rotating shaft 39 and a predetermined angle with respect to the first member 40a. In the embodiment, the second member 40b is inclined in the upright direction 'about 6 倾斜 toward the injection molding machine side. The second take-out device 24 can be stopped at a predetermined position so that the row (7) (7) 1330126 of the adsorption holding portion 33 of the parent-position position (release position) A2 of the second pick-up device 23 is in the column direction and the second take-up device 24 The direction of the second member 40b at the delivery position (standby position) B1 coincides. The adsorption holding portion 41 is disposed on the surface of the second member 40b of the arm portion 40 on the side of the fixed mold 16 so as to be spaced apart from the first extraction device 23 by the same interval. The adsorption holding portion 41 of the second take-out device 24 is a general suction cup having a rubber mat. The adsorption holding portion 41 is attached to the suction hole of the suction cup by a flexible resin pipe (not shown) attached to the arm portion 40' via a spring. Further, the resin piping is fixed to the arm portion 40' by the inside of the spring and is introduced into a vacuum device (not shown), which is the same as the second extraction device 23. A belt conveyor is disposed at a position lower than the first rotating shaft 37 of the second take-up device 24 on the floor opposite to the injection molding machine 11 (reverse operation side) via the second take-up device 24. 42. The belt conveyor 42 is of a general type, and the rubber belt 43 of a predetermined width is intermittently driven by a motor (not shown). As shown in Fig. 1 and Fig. 2, on the side of the machine tool 15 on the reverse side of the injection compression molding machine 11, a funnel-shaped chute 44 that is open upward is disposed on the side of the injection device 13 of the second take-up device 24. The chute 44 is disposed below the delivery position (release position) A2 of the first take-up device 23, and collects the runner P1 when the first take-up device 23 releases the runner P1 (as a receiving member). . In the first and second figures, the tube 45' below the chute 44 does not describe the entire piping (omitted from the middle), and the following design can be adopted: the runner P1 is dropped to a collecting box (not shown); Or connect the pipeline to the upper part of the injection device and transport the runners 10- (8) by air or the like. 30126 pi ' is put into the input port of the injection device and used for recycling. A safety door, a guard grill, and the like are provided in the moving region of the take-up devices 23 and 24 and the moving region of the movable mold 20, and the illustration thereof is omitted here. Next, the injection compression molding die 51 of the light guide plate of the present embodiment will be described with reference to Fig. 4. The injection compression molding die 51 is composed of a movable die 20 of a first die and a fixed die 16 of a second die, and a cavity C1 having a variable volume and thickness is formed between the two die 20 and 16 after the mold clamping. , ® C2 (for injection compression molding or injection molding). The movable mold 20 includes a mold main body portion 52, a core portion 53, a movable frame portion 54, and the like. The core portion 53 is fixed to the mold main body portion 52, and the movable frame portion 54 provided around the mold body portion 54 is attached to the mold main body portion 52 by a spring 54a. Therefore, in the movable frame portion 20, the relative positions of the core portion 53 and the movable frame portion 54 in the direction of the opening and closing mold can be changed. In the core portion 53, two cavity forming blocks 55, 55 are fixed, and cavity forming faces 55a, 55a, 0 are formed in the cavity forming blocks 55, 55, respectively, in the mold body portion 52 and the core portion 53. A projecting pin 56 of the ejector is disposed at a position facing the sprue bushing 64 of the fixed mold 16 at the center portion (moving by a driving device (not shown) and retracting by a spring). The front end portion 'before the protruding pin 56 is provided with a biting portion 56a for pulling the bypass P1 toward the side of the movable mold 20. A flow path forming surface 57 (for forming the flow path P2) is formed from the nip portion 56a toward each of the cavity forming faces 55a. In the movable mold 20, a gate cutting tool 58 is disposed adjacent to the cavity forming block 55 (returned by a driving device not shown) by retracting. Although the cut-off tool 58 advances, 'by cutting the fixed gate with the fixed mold 16 -11 - (9) (9) 13. 30126 The cutter 65 is staggered' to cut the gate P3. Two flow paths are provided in the movable mold 2', that is, the cooling medium flow path 59 for cooling the cavity forming surface 55a, cooling for cooling the flow path formation 57 and the protruding pin 56, and the like Media stream 60. The fixed mold 16 of the second mold includes a mold main body portion 61, a cavity forming block 62 on which the cavity forming surface 62a is formed, a molding block 63, a sprue bushing 64, a fixed gate cutting tool 65, and an abutting block. 66 and so on. The sprue bushing 64 serves as a passage for discharging the molten resin from the nozzle 12b, and the surface of the insert 63 constitutes the flow path forming surface 67. The fixed gate cutter 65 is disposed adjacent to the cavity forming block 62 and can be interleaved with the gate cutter 58. Two systems of flow paths are provided in the fixed mold 16, that is, a cooling medium flow path 69 for cooling the cavity forming surface 02a, a cooling flow path forming surface 67, and a sprue bushing 64. The runner uses a cooling medium flow path 70. In the present embodiment, two mold cavities C 1 and C2 ' are disposed in the longitudinal direction in the injection compression molding die 51. However, two cavities can be formed in the horizontal direction, and the number of cavities can be one or four. plural. The number and arrangement of the adsorption holding portions of the take-out device are determined in accordance with the number and arrangement of the aforementioned cavities. Next, the injection compression molding method of the light guide plate P of the injection compression molding machine 11 of the present embodiment will be described using the flowchart of Fig. 5. In the present embodiment, the light guide plate P having a diagonal size of 3 吋 and a plate thickness of 0_4 mm is used. Forming was carried out for 4 seconds of molding cycle time. Among them, the mold opening time is _ 5 seconds, the take-out time is 0 · 4 seconds, and the mold closing time is 〇. For 5 seconds, the time from the start of mold opening to the removal of the light guide plate P to the closed mold is 1 . 4 seconds. Further, the time from the start of the mold opening to the removal of the light guide plate P to the closed mold is preferably 2. Within 2 seconds ( -12- (10) 1330126 0. 75~2·2 seconds), more preferably 1. Within 5 seconds (0. 75~1. 5 seconds). The time from the completion of the closed mold to the start of the mold opening is 3. 0 seconds, where the middle time and boost time 〇. 1 second, shooting time 〇. 〇 5 seconds, hold time 〇. 4 5 seconds, cooling time 2. 4 seconds (substantial cooling is performed from the beginning). However, the time from the completion of the mold closing to the start of the mold opening depends on the shape (area, thickness, and transfer surface shape) of the light guide plate. Change within 5 to 9 seconds, in order to shorten the forming cycle time to within 6 seconds ( ® 2. 5 to 6 seconds), more preferably less than 4 seconds (2·5 to 4 seconds). In the present embodiment, the cavity cooling medium flow path 59 for cooling the cavity forming surface 55a of the movable mold 20, the cooling medium flow path 60 for cooling the vicinity of the flow path forming surface 57 and the protruding pin 56, The cooling medium flow path 69 for cooling the cavity forming surface 62a of the fixed mold 16 and the cooling medium flow path 70 for cooling the flow path forming surface 67 and the sprue bushing 64 are used. It flows through a cooling medium (cold® water) controlled by a thermostat to a temperature of about 80 to 120 ° C (30 to 100 ° C lower than the glass transition temperature Tg of the polycarbonate for forming resin). The cooling medium temperature in the runner cooling medium flow path 70 is lower than the other flow paths, which promotes cooling of the most time-consuming runner P1 and prevents the occurrence of the wire. Further, the temperature of the front region (the region closest to the nozzle) of the heating cylinder 12a was set to 340 ° C, and the molten resin of the polycarbonate was measured. When the polycarbonate is used, the temperature of the front portion of the heating cylinder 12a is set to a temperature of 330 to 380 °C. By moving the mold clamping cylinder 22 (opening and closing mold and clamping mechanism), the movable mold 20 assembled to the movable plate 21 is brought into contact with the fixed mold 16 assembled to the fixed disk 17 to perform closing -13- (11). 30126 mode. Then, the mold clamping force was raised to 50 to 20 0 kN to perform mold clamping. Thereby, the mold main body portion 52 of the movable mold 20 and the movable frame portion 54 are brought into contact with each other against the elastic pressure of the spring 54a, and the movable frame portion 54 is positioned at the final position with respect to the core portion 53. Further, between the fixed mold 16 and the movable mold 20, a flow path P2 (including a gate P3 having a variable thickness) and a cavity C1, C2 having a variable thickness connected to the gate P3 are formed. At this time, it is preferable to attract the air in the cavity C1, C2 Φ from the viewpoint of flowing the molten resin in the cavities Cl, C2. Then, after a predetermined delay time elapses, the nozzle 12b of the injection device 13 (not shown) ejects the molten resin through the sprue bushing 64 at an exit speed of 100 to 200 mm/sec. The movable plate 21 and the core portion 53 of the movable mold 20 are retracted by the pressure at the time of injection. In this manner, the movable frame portion 54 of the movable mold 20 is located further forward than the core portion 53, and the gap between the cavity forming surface 62a of the fixed mold 16 and the cavity forming surface 55a of the movable mold 20 is compared. At the position where the initial clamping force acts, the maximum width is 50~200 μηη. Since the core portion 53 of the movable mold 20 retreats, the molten resin can be ejected into the cavities C1 and C2 where the cross-sectional area of the gate 变3 becomes large, and the flow loss of the molten resin can be reduced. As a result, the molten resin can be ejected at a lower speed and a lower pressure, and in particular, internal stress occurring in the vicinity of the gate of the light guide plate can be suppressed. When the screw position of the injection device 13 reaches the predetermined pressure holding switching position, the injection control is switched from the injection control to the pressure control. When switching to the pressure control, the mold clamping cylinder 22 is still clamped with a high mold clamping force, and after the switching to the pressure holding control and after a certain period of time, the mold clamping force is reduced. It can also reduce the clamping force while maintaining the pressure of -14- (12) 1330126. In the present embodiment, the gate cutting tool 58 is advanced by a driving device (not shown) while reducing the mold clamping force. 45~0. 8mm to cut the gate P3. At this time, the gate cutting tool 58 of the movable mold 20 and the gate cutting tool 65 of the fixed mold 16 are interleaved to cut the gate P3. Further, when the gate is cut, of course, the molten resin of the gate P3 does not reach the state of being completely cured. After the gate P3 is cut by the gate cutting tool 58, the gate cutting tool 57 is held in the advanced position. In this manner, the molten resin in the cavities C1 and C2 cannot be completely held from the side of the injection device 1 3, but the movable mold 20 is advanced by the driving of the mold clamping cylinder 22, and the cavity C can be moved. The molten resin in C2 is compressed, and even if it shrinks by cooling, no depression occurs, and good transfer molding can be performed. During this period, the heating cylinder 1 2a of the injection device 13 performs the measurement of the molten resin used for the next molding. Before the end of the cooling time, the air passage between the movable frame portion 54 of the movable mold 20 and the cavity forming block 55, the air passage between the cavity forming block 62 of the fixed mold 116 and the insert 66, etc. The supply of the mold release air toward the cavities C1 and C2 (blowing air) is performed. Then, the mold clamping cylinder 22 is actuated to sequentially press and open the mold. The cooling time from the end of the pressure holding to the start of the mold opening (including the pressure discharge) is 2 '4 seconds in the present embodiment. Then, the mold clamping cylinder 22 is actuated to move the movable disk 21 and the movable mold 20 to perform mold opening. When the mold opening is started, the biting portion 56a at the front end of the protruding pin 56 of the movable mold 20 bites into the runner P1 (including the flow path P2), so that the runner P1 can be pulled out from the sprue bushing 64 of the fixed mold 16. Out. Further, -15-(13) 13-30126 The light guide plate P is opened by the state in which the movable mold 20 has a concave mold shape and is held by the cavity forming surface 55a. Therefore, both the runner P1 (including the flow path P2) and the light guide plate P after being cut by the gate are held in the movable mold 20 in a separated state, and are moved in the mold opening direction. At the same time as the mold is opened, the mold release air is stopped at the fixed mold 16. In this embodiment, the time from the start of the mold opening to the completion of the mold opening from the movable mold 20 is 0. 5 seconds, the mold opening time can be 0. 3~0. Make a change between 6 seconds. The opening stroke of the mold (which is substantially equal to the interval between the fixed mold 16 and the movable mold 20 at the time of completion of the mold opening) is 60 to 100 mm. When the mold opening completion signal issued by the completion of the mold opening is received, the rotation shaft 26 of the first take-up device 23 is rotated in the counterclockwise direction of the first drawing, and the arm portion 27 and the adsorption holding portion 33 are moved from the standby position A3. It moves and stops at a position facing the light guide plate P in the vicinity of the movable mold 20 after the mold opening. Then, the rotating shaft 26 is moved by 15 to 30 mm in the mold opening direction, and the arm portion 27, the suction holding portion 33, and the like are moved to the holding position A1. Thereby, each of the suction faces 34a of the cup portion 34 of the suction holding portion 33 abuts against the reflecting surface of the light guide plate P (formed by the cavity forming surface 62a of the fixed mold 16). The air suction by the adsorption holding unit 33 of the first take-out device 23 is simultaneously performed when the take-up device 23 starts to operate. Therefore, when the suction surface 34a abuts, the suction is simultaneously performed. At this time, the attraction force is a weak attraction of about -50 to -120 kPa to avoid the formation of marks on the newly formed light guide plate P. Further, since the cup portion 34 of the adsorption holding portion 33 is composed of a porous elastic material (sponge), the entire adsorption surface 34a is adsorbed on the light guide plate P, so that formation on the light guide plate (14) 1330126 P can be further avoided. trace. In this embodiment, the molding cycle time is only 4. In 4 seconds, the heat of the formed light guide plate P is transmitted to the cup portion 34 to reach a certain temperature or higher, which is also one of the elements for avoiding the occurrence of marks. While the first take-up device 23 is moved to the holding position Ai, the detector 31 performs the following detection, that is, whether the runner P1 extracted from the sprue bushing 64 is normally positioned inside the collet 3 of the V-groove 28. Between the jaw members. When the detector 31 detects the runner P1, the ® chuck 30 is closed by the electromagnetic actuator, and the runner P1 (including the flow path P2) is held by the chuck 30. When the light guide plate P is sucked by the adsorption holding portion 33 and the runner P1 (including the flow path P2) is held by the chuck 30, the rotating shaft 26 and the arm portion 27 of the first take-up device 23 are again in the mold closing direction. The light guide plate P is slightly released to release the light guide plate P from the cavity forming surface 55a, and the runner Pi (including the flow path P2) is separated from the biting portion 56a of the front end of the protruding pin 56. During the demolding of the light guide plate P and the runner P1 (including the flow path P2) by the first take-up device 23, the movable mold 20 similarly supplies the air for the release film to assist the molding of the light guide plate P or the like. It is also possible to open a part of the movable frame portion of the movable mold outward or to advance the cavity forming surface to facilitate the removal of the light guide plate P. Then, the rotating shaft 26 of the first take-up device 23 is directed to the first figure. When the arm portion 27 is swung to a position indicated by the two-dot chain line (a position where the first take-out device 23 and the second take-up device 24 overlap in the first drawing), the rotation of the rotating shaft 26 is stopped. Then, the rotation shaft 26 of the first take-up device 23 is again moved in the mold opening direction, and the arm portion 27, the adsorption holding portion 33, and the like are moved to the delivery position (release position) A2. In the present embodiment, starting from the -17-(15) 1330126 1 take-out device 23, the light guide plate P and the runner P1 are taken out in a separated state, and then moved to the transfer position (release position) A2 for the total time required. Is 0. For 4 seconds, the cooling of the light guide plate P was also performed during this period. The arm portion 40 of the second take-out device 24 is stopped and stands by at the solid line position in Fig. 1 to receive the light guide plate P from the first take-out device 23 at the delivery position (release position) A2. Further, the adsorption holding portion 41 of the second take-out device 24 starts air suction before coming into contact with the light guide plate P. The phase is larger than the adsorption holding portion 33 of the first take-up device 23, and the adsorption holding portion 41 of the second take-up device 24 performs strong air suction at a lower vacuum. Then, the first take-out device 23 moves in the mold opening direction, and the surface of the light guide plate p formed by the cavity forming surface 55a of the movable mold 20 (the light exit surface in the present embodiment) is adsorbed by the second take-up device 24. When the holding portion 41 is in contact with the suction, the suction holding portion 33 of the first take-up device 23 stops the air suction, and immediately the first take-up device 23 is retracted, and the second take-up device 24 receives the light guide plate P. In the transfer position (release position) A2, the chuck 30 is opened, and the pi (including the flow path p2) held by the chuck 30 of the first take-up device 23 is dropped into the lower chute 44. The operation of opening the chuck 30 to lower the runner P1 can be performed while the runner P1 is being transferred, but the runner P1 may fall into contact with the light guide plate P, and the light guide plate P may be transferred from the first take-up device 23 to This operation is performed after the second take-out device 24 and the third take-out device 23 are retracted in the mold closing direction. When the light guide plate P is transferred to the second take-out device 24 and the runner P1 is dropped, the arm portion 27 of the first take-up device 23 is moved to the standby position A3 which is not the one-dot chain line of Fig. 1 . The standby position A3, -18-(16) 1330126 is in a range that does not interfere with the moving region of the movable mold 20 and is not affected by the heat of the mold, etc., and the position closer to the movable mold 20 or the like contributes to shortening the forming cycle time. When the first take-up device 23 delivers the light guide plate P, the first rotating shaft 37 of the second take-up device 24 rotates counterclockwise in the first drawing while the first take-up device 23 is retracted, and is fixed to the vertical of the first rotating shaft 37. The fixed shaft 38 in the direction is rocked, and at the same time, the second rotating shaft|shaft 39 attached to the fixed shaft 38 is also rotated by 90 degrees, and the first rotating shaft 39 is rotated with respect to the first member 40a of the arm portion 40. The inclined second member 40b is also rotated by 90°, and the adsorption holding portion 41 and the light guide plate P held thereby face downward. Further, when the arm portion 40 is swung to the release position B2 indicated by the two-dot chain line in Fig. 1, the first rotating shaft 37 stops rotating and the arm portion 40 stops shaking. Then, the suction holding portion 41 is stopped from being sucked by air, and the light guide plate P is released so as to face downward, so as to fall onto the rubber belt 43 of the belt conveyor 42. In the present embodiment, the two light guide plates P are dropped in a direction orthogonal to the moving direction of the rubber belt 43, but the light guide plate P is not caused by falling over the rubber belt 43 at an extremely short distance. damage. The second take-up device 24, which has released the light guide plate P, rotates the first rotating shaft 37 and the second rotating shaft 30 in the opposite manner to the above, and returns to the delivery position (standby position) B1 again. The belt conveyor 42 is intermittently driven in such a manner that the next light guide plate P can be loaded, and the rubber belt 43 is advanced at a certain distance. On the rubber belt 43, the cooling of the light guide plate P is continued, and the packing operation is performed manually or by a robot. The first take-out device 23 and the second take-out device 24 are controlled by a take-out device (not shown) disposed in the compression molding machine 11 disposed in the injection -19-(17) 1330126. The controller for taking out the device is connected to a controller of a machine 11 (not shown). Therefore, the air mold opening completion signal of the first take-up device 23 is received from the injection compression domain to start the mold opening signal, and the arm portion 27 of the first take-up device 23 is opened in accordance with the operation of the arm portion 27 of the first take-up device 23. The air suction of the device 24 and the action of the arm portion 40 are taken out. When the setting 23 is moved to the transfer position outside the movable mold 20 (release: after the start of the mold closing signal, the mold closing operation is performed. The closing time from the start of the movable mold 20 to the mold closing completion time is the mold closing time. 〇· 3~0. Adjust within 6 seconds. For example, from the viewpoints of the durability of the compression molding machine 11 and the injection compression molding die 51, it is not always necessary to pursue the highest speed closing speed. In the present embodiment, the reason why the take-up devices 23 and 24 use the shake table take-up devices 23 and 24 to perform the light guide plate P at the delivery position is mainly to shorten the cycle time. The time required for the present apparatus to take out the light guide plate P (from the mold opening completion: the arm portion 27 of the position 23 is operated at the standby position A3, the light guide plate P is taken out at the position A1, and the transfer position of the movable mold 20 is released (release position). ) A2, as of the beginning of the closed mode communication). 4 seconds. The aforementioned time can be 0. 1 5~1. 0 seconds to shorten the forming cycle time, can be 0. 15~0. 4 proceed. In order to further prevent the attraction of the adsorption holding portion 33 from being controlled by the actuator of the suction holding portion 33, the reception starts to rotate. Start the second and first take-out position) A 2 embodiment, 0. 5 seconds, based on the injection life, the metering mold speed, and the arm type, the 2 is handed over, and if the first take-out is taken out, the range 1 is attached to the range of the number of seconds in the holding range. After molding (Ο -20- (18) 1330126, the high-temperature light guide plate P can reduce the abutment speed of the adsorption holding portion 33 or wait until the movable mold 20 blows more release air (blowing air), but At this time, it is preferable that the required time is extended up to one. Further, when the mold opening and closing operation of the movable mold 20 and the operation of the take-up device 23 are partially overlapped, the molding cycle time can be further shortened by 0 · 3 to 0. About 5 seconds. For example, when the movable mold 20 moved to the position before the completion of the mold opening is detected, the arm portion 27 of the take-out device 23 is actuated to thereby overlap the mold opening operation and the intrusion operation of the arm portion 27 to shorten the forming. circulation time. Further, it is detected by the limit switch or the like that the arm portion 27, the adsorption holding portion 33, and the like have moved from the movable region of the movable mold 20 to the outside, and the start of the mold closing signal is issued before the delivery position A2 is reached, thereby causing the mold closing operation and The withdrawal operation of the arms 27 overlaps, and the molding cycle time can also be shortened. Although the present invention has not been enumerated one by one, it is not limited to the above-described embodiment, and of course, includes modifications made by those skilled in the art in accordance with the gist of the present invention. Regarding the rocker type first take-out device, as long as at least the arm portion can be shaken, it can be calculated that the entire arm portion does not move in the opening and closing mold direction, and only the suction holding portion at the tip end of the arm portion faces the opening and closing mold. Move in direction. It is also possible to design that the first take-out device does not move in the mold opening and closing direction, and the second take-up device can be moved in the mold opening and closing direction to perform the transfer. In this case, in order to allow the light guide plate from the mold to be adsorbed to the first take-up device, the mold can be used in the mold. Also set the machine or move the movable plate slightly forward. Further, the loading position of the first take-out device and the second take-out device can be selected on the machine tool, the fixed plate, or the floor loading table -21 - (19) 1330126. Further, in the present invention, the first take-out device removes the light guide plate and the runner in a separated state at the position where the outer portion of the mold is released. Therefore, the second take-out device is not essential. For example, it is possible to further increase the rotation axis in the arm portion of the rocker arm type first take-out device, and to horizontally release the light guide plate in the release position to be directly released and loaded on the conveyor. The adsorption holding portion of the first take-out device may be a general rubber mat or a plurality of bellows types, and the material may be urethane rubber, nitrile rubber or the like, and is not particularly limited. Regarding the take-out device, a horizontally movable take-out device that moves in the horizontal direction between the holding position in the vicinity of the movable mold and the release position outside the mold can also be used. At this time, the time required for removal is 0. 8~2. 2 seconds. The horizontally movable take-out device is provided with an adsorption holding portion for sucking the light guide plate, a chuck for holding the runner, and taking out the light guide plate and the runner in a separated state. It is preferable to use a porous elastic material such as ruthenium rubber for the adsorption holding portion. Further, in the present embodiment, the injection molding die for the light guide plate for the mobile phone® having a diagonal size of 3 inches is described. However, the size of the light guide plate may be 1. 5吋 or more and 7吋 or less. Further, in addition to the light guide plate having a uniform thickness, the shape of the light guide plate includes a wedge-shaped light guide plate whose thickness is thinner from the light incident surface side toward the other side, and can diffuse light transmitted through a light source such as a backlight. Board, lens, etc. Further, although the resin used for the molding of the light guide plate is merely an example of the polycarbonate, the optical property is excellent, and for example, a methacrylic resin, a cycloolefin polymer resin or the like can be used. Depending on the type of resin, the temperature of the molten resin and the glass transition temperature may vary. Of course, the timing of the gate cut, the temperature of the cooling medium, and the forming cycle may vary from -22 to (20) 1330126. Further, the light guide plate P of the embodiment has a thickness of 0. 4mm is used for injection compression molding, but the thickness is 0. 2~0. In the case of about 4 mm, the injection molding method can be used. The injection molding method has a wide interval in which the cavity is initially formed at the mold closing position, and is pressurized from a state where the low mold clamping force or the mold clamping force is close to 0, so that the plate thickness can be reduced at a relatively low speed even if the thickness is extremely thin. Low pressure is used for injection. Further, in the present embodiment, the injection compression molding die mounted on the injection molding machine that performs the #opening and closing mold in the horizontal direction is described. However, the present invention can also be applied to the opening and closing of the mold in the vertical direction. In the above embodiment, the movable frame portion 54 can be described as a flat mold that can change the position of the core portion 53. However, the present invention is also applicable to the case where the convex portion of one mold is fitted into the concave portion of the other mold. A so-called fitting mold in which a variable volume cavity is formed therebetween. Further, in the present embodiment, the gate is completely cut by the gate cutting tool in the mold, but the chuck of the take-out device can also be provided with the action of cutting the runner relative to the light guide plate or the cutting action. Etc., and the light guide plate and the runner are separated by a take-out device and taken out. [Brief Description of the Drawings] Fig. 1 is a front view of the take-out device of the light guide plate of the present embodiment viewed from the side of the movable disk toward the side of the fixed disk. Fig. 2 is a side view of the take-up device of the light guide plate of the embodiment. Fig. 3 is an enlarged perspective view showing the main part of the light-receiving device of the present embodiment. {E; -23- (21) (21) 13-30126 Fig. 4 is a cross-sectional view showing the injection compression molding die of the light guide plate used in the present embodiment. Fig. 5 is a flow chart showing the method of injection compression molding of the light guide plate of the embodiment. [Description of main component symbols] 1 1 : Injection compression molding machine 16: Fixed mold 1 7 : Fixed disk 20 : Movable mold 21 : Movable disk 23 : First take-out device 24 : Second take-out device 30 : Chuck 3 3 : Adsorption Holding portion 42: belt conveyor A1: holding position A2: delivery position (release position) A3: standby position B 1 : handover position (standby position) B2: release position P: light guide plate P1: runner P2: flow path P3 : Gate-24-