200804056 (1) 九、發明說明 【發明所屬之技術領域】 本發明係關於，用射出裝置從橫方向將熔融樹脂材料 " 射出而進行成形之碟片用射出成形機之冷卻機構。 【先前技術】 爲了成形出CD、DVD等的光碟成形品，所使用之碟 φ 片用射出成形機，係從射出裝置射出熔融樹脂材料後，在 模具部施加合模壓力進行成形。這種碟片用射出成形機， 在進行碟片成形時，係從射出裝置射出高溫（約300°C〜 400 °C )之合成樹脂材料後使其流入模具部內，因此前述 模具部會產生熱膨脹而降低成形精度，以相同條件進行成 形之成形品的品質可能會有偏差。 於是，習知的碟片用射出成形機，或是在模具部和屏 來配置該模具部之固定盤、模具部和用來配置該模具部之 • 可動盤之間分別配置隔熱板，或是在模具部的重要部位配 設調溫手段（形成供冷媒流通之流路以控制溫度）等，藉 . 此設置用來抑制模具部的溫度上昇之冷卻機構（例如參照 專利文獻1 )。 然而，上述習知的碟片用射出成形機之冷卻機構，就 算是藉由隔熱板、調溫手段來抑制模具部的溫度上昇的情 形’前述模具部朝外部散出之熱、週邊機器等的發熱等會 傳至固定盤、可動盤、複數個繫桿等，使固定盤、可動盤 、各繋桿等的溫度上昇而產生熱膨脹，因此該成形機的狀 -4- 200804056 (2) 態會改變而導致成形精度變差。特別是，由於固定盤和可 動盤之熱膨脹方向不同（固定盤會向上產生熱膨脹，可動 盤會向上下方產生熱膨脹），模具間會發生位置偏移，又 ^ 受到各繋桿之溫度上昇所造成的熱膨脹等各種外在因素， ‘ 因此相對於待成形之碟片的中心孔，轉印的偏心位置（ ECC)之偏差變大。 相對於此，在固定盤、可動盤、繋桿等配設調溫手段 φ (形成供冷媒流通之流路以控制溫度）雖可抑制前述可動 盤等的溫度上昇，但採用這種構造時，必須在該射出成形 機全體形成冷卻通路，其構造變得相當複雜。此外，在固 定盤上必須設置供插嵌射出裝置之開口部，因此會有強度 面上的問題。 〔專利文獻1〕日本特開2003-311798號公報 【發明內容】 # 本發明係有鑑於前述問題點而構成者，其目的係提供 一種碟片用射出成形機之冷卻機構，能抑制固定盤、可動 ^ 盤等在成形時的溫度上昇所造成之成形精度降低，其構造 簡單且強度優異。 請求項1之發明提供一種碟片用射出成形機之冷卻機 構，係用射出裝置從橫方向將熔融樹脂材料射出而進行成 形之碟片用射出成形機之冷卻機構，其特徵在於··係具備 :固定盤、可動盤、模具部以及冷卻板；該固定盤，係呈 縱向豎設’在大致中央部分具有供插嵌前述射出裝置之開 -5- 200804056 (3) 口部，在上下部分水平配置有複數個繋桿；該可動盤，係 配置成與前述固定盤相對向，能沿前述複數個繫桿相對前 述固定盤進退移動；該模具部，係由配設於前述固定盤之 " 固定模具及配設於前述可動盤之可動模具所構成；該冷卻 、 板，係配置於前述模具部分別和前述固定盤及前述可動盤 之間，具有比前述模具部更大的平面部。 請求項2之發明，係在請求項1記載之碟片用射出成 φ 形機之冷卻機構中，在前述模具部和前述冷卻板之間、或 在前述冷卻板分別和前述固定盤及前述可動盤之間，配置 隔熱板。 請求項3之發明，係在請求項1或2記載之碟片用射 出成形機之冷卻機構中，在前述冷卻板形成供流通冷卻液 之冷卻通路。 請求項4之發明，係在請求項1至3任一項記載之碟 片用射出成形機之冷卻機構中，在前述冷卻板的下部形成 φ 用來支撐前述固€模具或前述可動模具之支承部。 請求項1之發明，係用射出裝置從橫方向將熔融樹脂 材料射出而進行成形之碟片用射出成形機之冷卻機構，其 % 特徵在於：係具備：固定盤、可動盤、模具部以及冷卻板 ;該固定盤，係呈縱向豎設，在大致中央部分具有供插嵌 前述射出裝置之開口部，在上下部分水平配置有複數個繫 桿；該可動盤，係配置成與前述固定盤相對向，能沿前述 複數個繫桿相對前述固定盤進退移動；該模具部，係由配 設於前述固定盤之固定模具及配設於前述可動盤之可動模 -6 - 200804056 (4) 具所構成；該冷卻板，係配置於前述模具部分別和前述_ 定盤及前述可動盤之間，具有比前述模具部更大的平面部 :由於具備此構成，能以極簡單的構造來抑制固定盤、可 | 動盤等在成形時的溫度上昇所造成之成形精度降低’且能 ^ 提昇前述固定盤及可動盤之強度。 請求項2之發明，係在請求項1中，由於在前述模具 部和前述冷卻板之間、或在前述冷卻板分別和前述固定盤 φ 及前述可動盤之間配置隔熱板，故能更加提昇冷卻效果° 請求項3之發明，係在請求項1或2中，由於在前述 冷卻板形成供流通冷卻液之冷卻通路，故能提昇該冷卻丰反 所產生之冷卻效果。 請求項4之發明，係在請求項1〜3之任一者中，由 於在前述冷卻板的下部形成用來支撐前述固定模具或前述 可動模具之支承部，故在將模具部配設於固定盤及可動盤 時容易進行定位。 【實施方式】 ^ 以下參照所附圖式詳細說明本發明。 第1圖係顯示本發明的一實施例之碟片用射出成形機 之冷卻機構的立體圖。第2圖係第1圖之碟片用射出成形 機之冷卻機構的主要部位截面圖。第3圖係冷卻板的前視 圖。第4圖係本發明與習知技術關於固定盤、可動盤、繫 桿之溫度變化比較圖。第5圖係本發明與習知技術之EC C 比較圖。 200804056 (5) 如第〗圖及第2圖所示，本發明的一實施例之碟片用 射出成形機之冷卻機構1 0，係用射出裝置1 1從橫方向將 熔融樹脂材料射出而進行成形之機構，其具備固定盤20、 可動盤3 0、模具部4 0、冷卻板5 0。在圖中，符號12代表 ‘ 射出裝置11之加熱筒，13代表射出裝置π之噴嘴，15 代表用來在碟片成形時施加合模壓力之公知的汽缸裝置所 構成之合模機構。前述合模機構1 5可使用肘節機構。 # 固定盤20，係呈縱向豎設，在射出裝置n側之大致 中央部分具有供插嵌射出裝置1 1之開口部2 1，且在上下 部分呈水平配置複數個（本例爲4根）繫桿2 2 (下側繫桿 22A，22B、下側繫桿 22C，22D )。 可動盤3 0，係配置成與固定盤2 0相對向，能沿複數 個繋桿22A，22B，22C，22D而相對前述固定盤20進退移動 。實施例之可動盤3 0，係藉由合模機構1 5來動作。 模具部40，係由配設於固定盤20之固定模具41及配 # 設於可動盤30之可動模具46所構成。實施例之模具部4〇 ，係公知的碟片成形用模具，由麻田散系不鏽鋼（ 、 SUS420J2 )等所構成，在固定模具41之固定盤20側突設 _ 定位環42 (在進行碟片成形時供射出裝置1 1之噴嘴1 3插 入）。該模具部40，可相對固定盤20及可動盤30進行拆 裝，前述定位環42，係藉由和固定盤20之開口部2 1之孔 部2 1 a卡合來進行定位。 冷卻板5 0，係配置於模具部4 0分別和固定盤2 0及可 動盤3 0之間，具有比前述模具部40更大的平面部5 1。具 -8 - 200804056 (6) 有平面部51之冷卻板50，藉由配置於固定盤20與可動盤 30雙方，可減少因前述固定盤20及可動盤3 0之熱膨脹所 產生之模具間之位置偏移，且能補強前述固定盤20及可 * 動盤30之強度。特別是能補強固定盤20之開口部2 1所 ‘ 形成之薄壁部2〗b部分的強度。實施例之冷卻板5 0，係由 和前述模具部同樣的麻田散系不鏽鋼（SUS420J2 )等所構 成。如第3圖所示，在冷卻板50的平面部5 1之大致中央 φ 形成適當大小的貫通孔52，當其配置於固定盤20側時可 供定位環42插通，當其配置於可動盤3 0側時可供頂出器 、衝頭（未圖示）等的驅動裝置插通。該冷卻板5 0之平 面部5 1的厚度，係按照射出裝置1 1之噴嘴1 3之前進位 置來做適當的設定，本例爲12〜20mm。 在該冷卻板5 0，如第2圖及第3圖所示且如請求項3 之發明所規定，較佳爲形成有供冷卻液流通之冷卻通路55 。藉由使用未圖示之公知的冷卻器（冷卻水循環裝置）來 • 使冷卻液流通於冷卻板50內，可提昇該冷卻板50之冷卻 效果。作爲冷卻液，可使用被冷卻器冷卻成約1 5〜20 °c之 . 冷卻水，也能使用經由公知調溫裝置調節成約20〜35°C之 調溫水。圖中符號56代表冷卻通路55之流入通路，符號 5 7代表冷卻通路5 5之流出通路。 此外，在冷卻板5 0，如圖所示且如請求項4之發明所 規定，·較佳爲在下面形成用來支撐固定模具41或可動模 具46之支承部58。實施例之冷卻板50，係在平面部5 1 的下部突出形成支承部5 8而使整體側視呈大致L字型。 -9- 200804056 (7) 如前述般，由於平面部51薄，藉由使支承部58突出於平 面部5 1的下部，在進行調溫裝置與冷卻通路5 5之流入通 路56及流出通路57之連接時較容易作業。此外，該冷卻 ^ 板50，在分別配置於固定盤20及可動盤30時，各支承部 ‘ 5 8,5 8呈相對向配置，在該支承部5 8,5 8上裝載模具部40 〇 在此，針對碟片用射出成形機之冷卻機構1 0的模具 φ 部40之安裝作業做說明。首先，使前述可動盤30後退， 以使固定盤20和可動盤30的間隔變得比模具部40厚度 大很多。接著，將板狀構件P以和冷卻板5 0的支承部 5 8，5 8位於同一平面的方式放在各支承部5 8，5 8間之繫桿 22C，22D上，將模具部40裝載於板狀構件p及支承部 5 8，5 8上後，從該冷卻機構1 0的側方滑動至安裝位置。然 後，將形成於模具部40的固定模具41之定位環42卡合 於固定盤20之開口部21之孔部21a，使前述可動盤30前 • 進後，適當地將模具部40予以固定。如此般，藉由在冷 卻板5 0形成支承部5 8，能使模具部4 〇配設於固定盤2 〇 4 及可動盤30時之定位作業變容易。 本發明之碟片用射出成形機之冷卻機構1 0，如請求項 2之發明所規定，較佳爲在模具部4 0和冷卻板5 0之間、 或在冷卻板50分別和固定盤20及可動盤30之間配置隔 熱板60。第1圖及第2圖所示之實施例，係在固定模具 4 1之冷卻板5 0抵接側及可動模具4 6之冷卻板5 0抵接側 分別貼合隔熱板6 0。該隔熱板5 0爲公知構件所構成，係 -10- 200804056[Technical Field] The present invention relates to a cooling mechanism for an injection molding machine for forming a disk in which a molten resin material is injected from a lateral direction by an injection device. [Prior Art] In order to form an optical disk molded product such as a CD or a DVD, the use of the injection molding machine for the disk φ sheet is performed by applying a mold clamping pressure to the mold portion after the molten resin material is ejected from the injection device. In the injection molding machine for a disc, when a disc is molded, a synthetic resin material having a high temperature (about 300 ° C to 400 ° C) is emitted from the injection device and then flows into the mold portion, so that the mold portion is thermally expanded. However, the molding quality is lowered, and the quality of the molded article formed under the same conditions may vary. Therefore, the conventional disc is provided with an injection molding machine, or a heat insulating plate is disposed between the fixed portion of the mold portion, the mold portion, and the movable plate for arranging the mold portion, or In the important part of the mold portion, a temperature adjustment means (forming a flow path through which the refrigerant is circulated to control the temperature) is provided, and a cooling mechanism for suppressing the temperature rise of the mold portion is provided (see, for example, Patent Document 1). However, in the above-described conventional cooling mechanism for the injection molding machine for a disc, even if the temperature rise of the mold portion is suppressed by the heat shield and the temperature adjustment means, the heat radiated to the outside of the mold portion, peripheral equipment, and the like The heat is transmitted to the fixed plate, the movable plate, the plurality of tie bars, etc., and the temperature of the fixed disk, the movable plate, and the tie bars is increased to cause thermal expansion, so the shape of the molding machine is -4- 200804056 (2) state It will change and the forming accuracy will deteriorate. In particular, since the thermal expansion directions of the fixed disc and the movable disc are different (the fixed disc will thermally expand upward, the movable disc will thermally expand upward and downward), the positional displacement occurs between the molds, and the temperature rise of each tie rod is caused. Various external factors such as thermal expansion, 'therefore, the deviation of the eccentric position (ECC) of the transfer becomes large with respect to the center hole of the disc to be formed. On the other hand, in the fixed disk, the movable plate, the tie bar, and the like, the temperature adjustment means φ (the flow path through which the refrigerant flows is formed to control the temperature) can suppress the temperature rise of the movable disk or the like. It is necessary to form a cooling passage in the entire injection molding machine, and the structure thereof becomes quite complicated. Further, since the opening portion for inserting and inserting the injection device must be provided on the fixed disk, there is a problem in the strength surface. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2003-311798. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a cooling mechanism for an injection molding machine for a disk, which can suppress a fixed disk, The forming accuracy of the movable disk or the like due to an increase in temperature during molding is lowered, and the structure is simple and the strength is excellent. The invention of claim 1 provides a cooling mechanism for an injection molding machine for a disk, which is a cooling mechanism for an injection molding machine for forming a disk which is formed by ejecting a molten resin material from a lateral direction, and is characterized in that : a fixed disk, a movable disk, a mold part, and a cooling plate; the fixed disk is vertically erected 'in the substantially central portion, there is an opening for inserting and inserting the above-mentioned injection device - 5 - 200804056 (3) mouth, horizontally at the upper and lower portions Configuring a plurality of tie rods; the movable disc is disposed opposite to the fixed disc, and is movable forward and backward along the plurality of tie rods relative to the fixed disc; the mold portion is disposed on the fixed disc And a fixed mold and a movable mold disposed on the movable plate; the cooling plate is disposed between the mold portion and the fixed plate and the movable plate, and has a larger flat portion than the mold portion. According to the invention of claim 2, in the cooling mechanism of the disc for outputting the disc as the φ-shaped machine, the mold unit and the cooling plate, or the cooling plate and the fixed plate and the movable body are respectively movable. Between the plates, a heat shield is placed. According to a third aspect of the invention, in the cooling mechanism of the injection molding machine for a disc according to claim 1 or 2, the cooling plate is formed with a cooling passage through which the cooling liquid flows. The invention of claim 4, wherein in the cooling mechanism of the injection molding machine for discs according to any one of claims 1 to 3, φ is formed in a lower portion of the cooling plate for supporting the solid mold or the movable mold. unit. The invention of claim 1 is a cooling mechanism for an injection molding machine for a disk which is formed by ejecting a molten resin material from a lateral direction by an injection device, and is characterized in that it has a fixed disk, a movable disk, a die portion, and cooling. The fixed plate is vertically erected, and has an opening portion for inserting and inserting the injection device at a substantially central portion, and a plurality of tie bars are horizontally disposed at upper and lower portions; the movable plate is disposed opposite to the fixed plate The mold portion is moved forward and backward along the plurality of tie bars, and the mold portion is a fixed mold disposed on the fixed disk and a movable mold disposed on the movable plate -6 - 200804056 (4) The cooling plate is disposed between the mold portion and the _ plate and the movable plate, and has a larger planar portion than the mold portion. With this configuration, the fixing can be suppressed with an extremely simple structure. The forming accuracy of the disc, the movable disc, etc., which is caused by an increase in temperature during molding, can improve the strength of the fixed disc and the movable disc. According to the invention of claim 2, in the first aspect, the heat insulating plate is disposed between the mold portion and the cooling plate or between the fixed plate φ and the movable plate, so that the heat insulating plate can be further disposed. The cooling effect is improved. According to the invention of claim 3, in the request 1 or 2, since the cooling passage for circulating the cooling liquid is formed in the cooling plate, the cooling effect caused by the cooling and reversing can be improved. According to the invention of claim 4, in any one of claims 1 to 3, since the support portion for supporting the fixed mold or the movable mold is formed at a lower portion of the cooling plate, the mold portion is fixed to the mold portion. Easy positioning when the disc and the movable disc are used. [Embodiment] The present invention will be described in detail below with reference to the accompanying drawings. Fig. 1 is a perspective view showing a cooling mechanism of an injection molding machine for a disk according to an embodiment of the present invention. Fig. 2 is a cross-sectional view showing the main part of a cooling mechanism of the injection molding machine for the disc of Fig. 1. Figure 3 is a front view of the cooling plate. Fig. 4 is a view showing a comparison of temperature changes between the fixed disk, the movable plate, and the tie bar according to the present invention and the prior art. Fig. 5 is a comparison diagram of the EC C of the present invention and the prior art. (b) In the first embodiment of the present invention, the cooling mechanism 10 for the injection molding machine for a disk according to the embodiment of the present invention uses the injection device 1 1 to eject the molten resin material from the lateral direction. The forming mechanism includes a fixed disk 20, a movable plate 30, a die portion 40, and a cooling plate 50. In the figure, reference numeral 12 denotes a "heating cylinder of the injection device 11, 13 denotes a nozzle of the injection device π, and 15 denotes a mold clamping mechanism constituted by a known cylinder device for applying a mold clamping pressure at the time of forming the disk. The above-described mold clamping mechanism 15 can use a toggle mechanism. The fixed disk 20 is vertically erected, and has an opening portion 2 1 for inserting and inserting the injection device 1 1 at a substantially central portion of the injection device n side, and a plurality of horizontally disposed upper and lower portions (four in this example) Tie rod 2 2 (lower tie rods 22A, 22B, lower side tie rods 22C, 22D). The movable disk 30 is disposed to face the fixed disk 20, and is movable forward and backward with respect to the fixed disk 20 along a plurality of tie bars 22A, 22B, 22C, and 22D. The movable disk 30 of the embodiment is operated by the mold clamping mechanism 15. The mold portion 40 is composed of a fixed mold 41 disposed on the fixed disk 20 and a movable mold 46 disposed on the movable platen 30. The mold portion 4 of the embodiment is a well-known mold for forming a disk, and is composed of a granulated stainless steel (SUS420J2) or the like, and a locating ring 42 is protruded from the fixed disk 20 side of the fixed mold 41. The nozzle 1 3 of the injection device 1 1 is inserted during molding. The mold portion 40 is detachably attached to the fixed disk 20 and the movable platen 30, and the positioning ring 42 is positioned by being engaged with the hole portion 21a of the opening portion 21 of the fixed disk 20. The cooling plate 50 is disposed between the mold portion 40 and the fixed disk 20 and the movable plate 30, and has a flat portion 51 that is larger than the mold portion 40. -8 - 200804056 (6) The cooling plate 50 having the flat portion 51 is disposed between the fixed disk 20 and the movable plate 30, thereby reducing the gap between the molds due to the thermal expansion of the fixed disk 20 and the movable plate 30. The position is offset, and the strength of the fixed disk 20 and the movable disk 30 can be reinforced. In particular, the strength of the portion of the thin portion 2b formed by the opening portion 2 1 of the fixed disk 20 can be reinforced. The cooling plate 50 of the embodiment is made of the same as the mold portion of the above-mentioned mold portion of stainless steel (SUS420J2). As shown in Fig. 3, a through hole 52 having an appropriate size is formed at substantially the center φ of the flat portion 51 of the cooling plate 50, and when it is disposed on the side of the fixed disk 20, the positioning ring 42 can be inserted, and when it is disposed in the movable When the disk 30 side is provided, a driving device such as an ejector or a punch (not shown) can be inserted. The thickness of the flat surface portion 51 of the cooling plate 50 is appropriately set in accordance with the advance position of the nozzle 13 of the injection device 1, and is 12 to 20 mm in this example. In the cooling plate 50, as shown in Figs. 2 and 3 and as defined in the invention of claim 3, it is preferable to form a cooling passage 55 through which the coolant flows. By using a known cooler (cooling water circulation device) (not shown) to circulate the coolant in the cooling plate 50, the cooling effect of the cooling plate 50 can be improved. As the cooling liquid, it can be cooled to about 15 to 20 ° C by a cooler. The cooling water can also be adjusted to a temperature of about 20 to 35 ° C by a known temperature control device. In the figure, reference numeral 56 represents an inflow path of the cooling passage 55, and reference numeral 57 represents an outflow path of the cooling passage 55. Further, in the cooling plate 50, as shown in the drawing and as specified in the invention of claim 4, it is preferable to form a support portion 58 for supporting the fixed mold 41 or the movable mold 46 below. In the cooling plate 50 of the embodiment, the support portion 58 is formed to protrude from the lower portion of the flat portion 5 1 so as to have a substantially L-shape as a whole. -9- 200804056 (7) As described above, since the flat portion 51 is thin, the support portion 58 protrudes from the lower portion of the flat portion 51, and the inflow passage 56 and the outflow passage 57 of the temperature regulating device and the cooling passage 55 are performed. It is easier to work with when connecting. Further, when the cooling plate 50 is disposed on the fixed disk 20 and the movable plate 30, the support portions '5, 5, 8 are disposed to face each other, and the mold portion 40 is loaded on the support portions 5, 5 8 〇 Here, the mounting operation of the mold φ portion 40 of the cooling mechanism 10 of the discharge molding machine for a disk will be described. First, the movable disk 30 is retracted so that the interval between the fixed disk 20 and the movable plate 30 becomes much larger than the thickness of the mold portion 40. Next, the plate-like member P is placed on the tie bars 22C, 22D between the support portions 5, 5 8 in such a manner as to be in the same plane as the support portions 5, 5 8 of the cooling plate 50, and the mold portion 40 is loaded. After the plate-shaped member p and the support portions 5 8, 5 8 are slid from the side of the cooling mechanism 10 to the mounting position. Then, the positioning ring 42 formed in the fixed mold 41 of the mold portion 40 is engaged with the hole portion 21a of the opening portion 21 of the fixed disk 20, and the mold portion 40 is appropriately fixed after the movable disk 30 is advanced. In this manner, by forming the support portion 5 8 on the cooling plate 50, the positioning operation when the mold portion 4 is disposed on the fixed disk 2 〇 4 and the movable disk 30 can be facilitated. The cooling mechanism 10 for an injection molding machine for a disc according to the present invention, as defined in the invention of claim 2, is preferably between the mold portion 40 and the cooling plate 50, or between the cooling plate 50 and the fixed plate 20, respectively. A heat insulating plate 60 is disposed between the movable platen 30 and the movable platen 30. In the embodiment shown in Fig. 1 and Fig. 2, the heat insulating plate 60 is bonded to the abutting side of the cooling plate 50 of the fixed mold 41 and the abutting side of the cooling plate 50 of the movable mold 46, respectively. The heat insulation board 50 is composed of a known member, and is -10- 200804056
由大小與模具部40的模具抵接面大致相等之板狀構件 構成。藉由配置隔熱板60，可抑制模具部40之外部散 ，而能提昇冷卻效果。雖未圖示出，在冷卻板5 0分別 ‘ 固定盤20及可動盤30之間配置隔熱板60時，較佳爲 - 述隔熱板60的大小與冷卻板50的平面部5 1大致相等 這時，與配置於模具部40和冷卻板50間的情形相同， 提昇冷卻效果。 • 其次，使用第4圖及第5葡來說明該碟片用射出成 機之冷卻機構10之冷卻效果。第4圖之曲線圖代表， 發明之冷卻機構10之固定盤20、可動盤30、繫桿22 習知冷卻機構之固定盤、可動盤、繫桿等隨著時間經過 h )之溫度變化（°C )。第5圖之曲線圖代表，本發明 冷卻機構1 〇與習知冷卻機構隨者時間經過（h )，相對 碟片中心孔之轉印偏心位置（ECC )之徧差（// m )。 如第4圖所示，習知之冷卻機構，固定盤、可動盤 φ 繫桿各個的溫度會隨著時間經過而上昇（圖示例中，開 時爲25°C左右，約3小時後上昇至約45〜50°C )。相 • 於此，本發明之冷卻機構1 〇，如第3圖所示，由於固定 20及可動盤30被冷卻板50,50冷卻，可抑制固定盤20 可動盤3〇之溫度上昇’且不論時間經過多久均可控制 大致一定的溫度。此外，由於固定盤20及可動盤30之 度被控制在繫桿22的溫度以下，不須另外在前述繫桿 上設置冷卻構件即可抑制該繫桿22之溫度上昇及熱膨 所 熱 和 刖 〇 可 形 本 與 ( 之 於 、 始 對 盤 及 在 溫 22 脹 -11 - 200804056 (9) 如此般，將固定盤20、可動盤30、繫桿22各個控制 成隨著時間經過溫度不改變，且如前述般將冷卻板5 0配 置於固定盤2 0及可動盤30以減少前述固定盤20及可動 盤30在熱膨脹方向的差所產生之位置偏移及繫桿22之熱 * 膨脹，因此如第5圖所示，雖然習知冷卻機構有隨著固定 盤、可動盤、繫桿之溫度上昇而使ECC値變大之傾向， 但本發明之冷卻機構1 〇能將ECC値控制在大致一定的低 • 値。 如以上所說明，該碟片用射出成形機之冷卻機構1 0， 藉由在模具部40分別和固定盤20及可動盤30之間配置 具有平面部51 (比前述模具部40更大）之冷卻板50,50 ’不須在該射出成形機全體形成冷卻通路，即可抑制前述 固定盤20、可動盤30、繫桿22在成形時之溫度上昇，且 能補強前述固定盤20及可動盤30的強度，因此在合模時 及射出時能減少固定盤20及可動盤30之撓曲。因此，以 • 極簡單的構造，就能抑制起因於固定盤20、可動盤30、 繫桿22在成形時的溫度上昇所造成之成形精度降低，且 ^ 能提昇前述固定盤20及可動盤30的強度。 > 本發明之碟片用射出成形機之冷卻機構，並不限於前 述實施例，在不脫離本發明主旨之範圍內也能將一部分的 構造做適當改變而實施。例如，可在冷卻板的支承部之一 側端部設置制動件，而在將模具部定位時構成橫方向的限 制。 此外，爲了更高效率地進行模具部之安裝，可在模具 -12- 200804056 (10) 部的下面或冷卻板的支承部之至少一方安裝低摩擦係數之 樹脂板等。 此外，在前述實施例，模具部與冷卻板係個別形成， 但前述模具部與冷卻板也能形成一體。即使在模具部與冷 ^ 卻板形成一體的情形，仍能在模具部和冷卻板之間、或模 具部分別和固定盤及可動盤之間配置隔熱板。 • 【圖式簡單說明】 第1圖係顯示本發明的一實施例之碟片用射出成形機 之冷卻機構的立體圖。 第2圖係第1圖之碟片用射出成形機之冷卻機構的主 要部位截面圖。 第3圖係冷卻板的前視圖。 第4圖係本發明與習知技術關於固定盤、可動盤、繫 桿之溫度變化比較圖。 ® 第5圖係本發明與習知技術之ECC比較圖。 。 【主要元件符號說明】 . 1 0 :碟片用射出成形機之冷卻機構 11 :射出裝置 1 2 :加熱筒 1 3 :噴嘴 1 5 :合模機構 2〇 :固定盤 -13- 200804056 (11) :開口部 :繫桿 _·可動盤 :模具部 :固定模具 :定位環 :可動模具 :冷卻板 :平面部 :冷卻通路 :支承部 :隔熱板 -14-It is composed of a plate-like member having a size substantially equal to the mold abutting surface of the mold portion 40. By arranging the heat insulating plate 60, the external portion of the mold portion 40 can be suppressed from being scattered, and the cooling effect can be improved. Although not shown, when the heat insulating plate 60 is disposed between the fixed plate 20 and the movable plate 30, respectively, it is preferable that the size of the heat insulating plate 60 is substantially the same as the flat portion 51 of the cooling plate 50. In this case, as in the case of being disposed between the mold portion 40 and the cooling plate 50, the cooling effect is enhanced. • Next, the cooling effect of the cooling mechanism 10 for the disc injection machine will be described using Fig. 4 and Fig. 5 . The graph of Fig. 4 represents the temperature change of the fixed disk 20, the movable platen 30, and the tie bar 22 of the cooling mechanism 10 of the invention, which is known as the cooling plate, the movable plate, the tie rod, etc., as time passes. C). The graph of Fig. 5 represents the spread (//m) of the transfer eccentric position (ECC) of the cooling mechanism 1 本 of the present invention and the conventional cooling mechanism as a function of time (h). As shown in Fig. 4, the temperature of each of the conventional cooling mechanism, the fixed disk, and the movable disk φ tie rod rises with time (in the example of the figure, the opening time is about 25 ° C, and rises to about 3 hours later. About 45~50 °C). In the cooling mechanism 1 of the present invention, as shown in Fig. 3, since the fixing 20 and the movable platen 30 are cooled by the cooling plates 50, 50, the temperature rise of the fixed disk 20 can be suppressed. How long the time passes can control a certain temperature. In addition, since the degree of the fixed disk 20 and the movable disk 30 is controlled below the temperature of the tie bar 22, it is not necessary to separately provide a cooling member on the tie bar to suppress the temperature rise of the tie bar 22 and heat and heat. 〇 形 形 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , As described above, the cooling plate 50 is disposed on the fixed disk 20 and the movable disk 30 to reduce the positional deviation caused by the difference between the fixed disk 20 and the movable disk 30 in the thermal expansion direction and the heat* expansion of the tie bar 22, As shown in Fig. 5, although the conventional cooling mechanism tends to increase the ECC 随着 as the temperature of the fixed disk, the movable disk, and the tie bar increases, the cooling mechanism 1 of the present invention can control the ECC 在 substantially As described above, the disc cooling mechanism 10 for the injection molding machine has a flat portion 51 disposed between the mold portion 40 and the fixed disk 20 and the movable plate 30 (rather than the mold described above). Department 40 larger) cooling plate 50, 50 'not required By forming a cooling passage in the entire injection molding machine, it is possible to suppress the temperature rise of the fixed disk 20, the movable platen 30, and the tie bar 22 at the time of molding, and to reinforce the strength of the fixed disk 20 and the movable plate 30, so that the mold clamping is performed. The deflection of the fixed disk 20 and the movable disk 30 can be reduced at the time of ejection and the movable disk 30. Therefore, the extremely simple structure can suppress the temperature rise caused by the fixed disk 20, the movable disk 30, and the tie bar 22 during molding. The molding precision is lowered, and the strength of the fixed disk 20 and the movable disk 30 can be improved. The cooling mechanism of the injection molding machine for a disk according to the present invention is not limited to the above embodiment, and does not depart from the gist of the present invention. The inside can also be implemented by appropriately changing a part of the structure. For example, a stopper can be provided at one end portion of the support portion of the cooling plate, and a lateral direction restriction can be formed when positioning the mold portion. Further, for higher efficiency The mold portion is mounted, and a resin sheet having a low friction coefficient or the like can be attached to at least one of the lower portion of the mold -12-200804056 (10) or the support portion of the cooling plate. Further, in the foregoing embodiment The mold portion and the cooling plate are separately formed, but the mold portion and the cooling plate can be integrally formed. Even when the mold portion and the cooling plate are integrally formed, the mold portion and the cooling plate, or the mold portion can be formed. A heat shield is disposed between the fixed plate and the movable plate. Fig. 1 is a perspective view showing a cooling mechanism of the injection molding machine for a disk according to an embodiment of the present invention. Fig. 1 is a cross-sectional view of a main part of a cooling mechanism of an injection molding machine. Fig. 3 is a front view of a cooling plate. Fig. 4 is a view showing temperature changes of a fixed disk, a movable disk, and a tie bar according to the present invention and the prior art. Compare the graphs. ® Figure 5 is a comparison of the ECC of the present invention with the prior art. . [Description of main component symbols] . 1 0 : Cooling mechanism 11 for injection molding machine for disc: Injection device 1 2 : Heating cylinder 1 3 : Nozzle 1 5 : Clamping mechanism 2 〇: Fixed plate-13 - 200804056 (11) : Opening: tie rod _· movable plate: mold part: fixed mold: positioning ring: movable mold: cooling plate: flat part: cooling passage: support part: heat insulation board - 14-