201124208 六、發明說明： 【發明所屬之技術領域】 本考X明關於防止液晶從液晶塗佈機之瓶子與瓶芸問，，电 漏的裝置。 1 1 【先前技術】 圖1為示意地顯示液晶塗佈機範例及液晶供應裝置範 例之側視圖。 如圖1所示，液晶塗佈機包含主框架1〇〇、裝設於主框 采100的平台200、安裝成移動於主框架丨⑻之γ軸方向的 塗佈頭單元支撐框300、以及裝設於塗佈頭單元支撐框3〇〇 而移動於X軸方向的塗佈頭單元4〇〇。各塗佈頭單元4⑻具 有排出液晶的喷嘴單元。 如圖2所不，瓶子插入構件51〇附接塗佈頭單元4〇〇的 支撐組件410 ’且瓶子520插入瓶子插入構件51〇。瓶蓋53〇 轉接瓶子520的瓶口。管件54㈣一端通過瓶蓋53〇而定位 ，，子520中。管件540的另一端連接塗佈頭單元4〇〇的喷 ，單元430。瓶子520及瓶i 53〇以螺接方式彼此墟。瓶 蓋530及管件540藉由連接構件550彼此連接。 、連接孔531形成於瓶蓋530底部，而使瓶子52〇的瓶口 連接到連接孔531。再者，纟同孔532形成與連接孔S3i相 通。接爻孔533形成於瓶蓋530的外圍而與共同孔532相 201124208 通。螺紋穿孔534形成於瓶蓋530頂部’而與共同孔532相 通。 連接構件550具有螺紋體551，其在外圍具有螺紋。連 接孔552形成穿過連接構件550之中央部。管件540插入連 接構件550的連接孔552而通過連接孔552，且連接構件55〇 的螺紋體551固定於瓶蓋530的螺紋穿孔534。 同時，液晶供應裝置包含裝設於底板61〇的液晶槽 620。壓力供應單元630供應壓力到液晶槽62〇。連接管6/〇 連接液晶槽620及壓力供應單元630。液晶注入單元65〇 提供於並穿過接潔淨台1〇的側壁。再者，管件66〇連接液 晶槽620及液晶注入單元650。壓力供應單元63〇裝設於 底板610。 一般而言，液晶塗佈機放置於潔淨台丨〇中，而於液晶 塗佈程序期間防止雜質進到基板。 如液晶注入單元65()包含耦接基件651的驅動單元652、 藉由驅動單元652移動的滑件653、耦接滑件653的支托 器654、以及耦接通過支托器654的管件支撐管655。於此， 管件支撐管655放置於潔淨台1〇中。 =件670裝設於管件660。若閥件67〇開啟，則液晶 流入管件660。相反地’若管件670 _，則液晶不會流 入管件670。 201124208 上述的液晶塗佈機操作如下。 於填充有液晶的瓶子520裝設於 m =態下，塗佈頭單元支撐框3⑻ 7 根據預設座標移動於x及γ抽m頭早元4〇〇 過噴嘴單元430塗佈液晶。W塗佈頭早元透 當需要供應液晶到瓶子52〇時，塗 及塗佈頭單元400移動，而枯貼二堂佈頭早兀支撐框300 拖早t軸使裝§又於各塗佈頭單元400的 二Γ二移:液晶供應位置。於此。液晶供應位編 ^件支撐嘗655❾管件_可供應液晶峨子5 直0 田瓶子520移動到液晶供應位置時，操作驅動單元μ〗 :朝瓶子520移動管件支料655。管件支撐管655朝瓶 520移動’然後插入搞接瓶子52()之瓶蓋別的接受孔 當閥件670開啟時，藉由作用於液晶槽62〇内部的堡 力，使液晶透過管件660供應到瓶子520。 若供應預定量的液晶到瓶子520，則閥件67〇關閉， 因而防止儲存於液晶槽62〇甲的液晶透過管件66〇供應 瓶子520。 驅動單元652向後移動管件支撐管655。管件支撐營 201124208 655向後移動，而使管件支撐管655從接受孔移出。 然而’習知眺子插人構件、瓶子、以及瓶蓋的問題 在於’若由瓶子插入構件51〇支撐的瓶子52〇發生震動時， 瓶子520會晃動，而使瓶子52〇所含的液晶從瓶子52〇的 瓶口端與瓶蓋530的共同孔532内圍之間洩漏。再者，當 透過躺接管件切管665的#件_供應液晶到瓶子52〇 時，液晶從瓶子520的瓶口端與瓶蓋530的共同孔532内 圍之間洩漏。 _再者，當瓶子520不是插入在瓶子插入構件510的預 二位置時，或者若瓶子520插入在瓶子插入構件510的預 :又=置而發生震動時，瓶子52〇會偏離預設位置。因此， 瓿盍530之接受孔533的中心軸不會對應於管件支撐管幻5 的,中心軸。因此’當管件支撐管奶朝瓶蓋別移動而要 將^件支撐管655插入瓶蓋530的接受孔533時，管件支 樓管655可能會與瓶蓋530碰撞。 【發明内容】 一因此，本發明有鑑於先前技術所發生的問題，本發明之 :目的在於提供—獅止液晶從瓶子油接瓶子之 洩漏的裝置。 —本發明之另一目的在於提供一種防止液晶從瓶子與瓶 盍間A漏的裝置，其將瓶子與㉝接瓶子眺蓋蚊在預設位 置，因而容許4撐管件的管件支撐管線性機入瓶蓋的 201124208 注入通道，1 撐管的位置 而能輕易又精確地調整瓶蓋的注入通道及管件支 ，並保持瓶子固定，因而防止瓶子搖晃。201124208 VI. Description of the invention: [Technical field to which the invention pertains] This test discloses a device for preventing leakage of liquid crystal from a bottle and a bottle of a liquid crystal coater. 1 [Prior Art] Fig. 1 is a side view schematically showing an example of a liquid crystal coater and a liquid crystal supply device. As shown in FIG. 1, the liquid crystal coater includes a main frame 1A, a stage 200 installed in the main frame 100, a coating head unit support frame 300 mounted in a γ-axis direction of the main frame 丨 (8), and The coating head unit 4 is mounted on the coating head unit support frame 3 and moved in the X-axis direction. Each of the coating head units 4 (8) has a nozzle unit that discharges liquid crystal. As shown in Fig. 2, the bottle insertion member 51 is attached to the support member 410' of the coating head unit 4'' and the bottle 520 is inserted into the bottle insertion member 51''. The cap 53〇 is transferred to the mouth of the bottle 520. One end of the tube member (4) is positioned by the cap 53〇, in the sub-520. The other end of the tube 540 is connected to the spray of the coating head unit 4, unit 430. The bottle 520 and the bottle i 53 are screwed together. The cap 530 and the tube 540 are connected to each other by a connecting member 550. A connecting hole 531 is formed at the bottom of the cap 530, and the bottle opening of the bottle 52 is connected to the connecting hole 531. Further, the same hole 532 is formed to communicate with the connection hole S3i. The nip 533 is formed on the outer periphery of the cap 530 and communicates with the common hole 532 201124208. Threaded perforations 534 are formed in the top of the cap 530 and communicate with the common aperture 532. The connecting member 550 has a threaded body 551 that has a thread on the periphery. The connecting hole 552 is formed through the central portion of the connecting member 550. The pipe member 540 is inserted into the coupling hole 552 of the joint member 550 to pass through the joint hole 552, and the threaded body 551 of the joint member 55A is fixed to the threaded through hole 534 of the bottle cap 530. At the same time, the liquid crystal supply device includes a liquid crystal cell 620 mounted on the bottom plate 61A. The pressure supply unit 630 supplies pressure to the liquid crystal cell 62'. The connecting tube 6/〇 connects the liquid crystal tank 620 and the pressure supply unit 630. The liquid crystal injection unit 65 is provided on and passed through the side wall of the cleaning stage 1 . Further, the tube member 66 is connected to the liquid crystal cell 620 and the liquid crystal injection unit 650. The pressure supply unit 63 is mounted on the bottom plate 610. In general, the liquid crystal coater is placed in a clean stage to prevent impurities from entering the substrate during the liquid crystal coating process. For example, the liquid crystal injection unit 65 ( ) includes a driving unit 652 that couples the base member 651 , a slider 653 that is moved by the driving unit 652 , a holder 654 that couples the slider 653 , and a tube that is coupled through the holder 654 . Support tube 655. Here, the tube support tube 655 is placed in the clean bench 1 . The member 670 is mounted to the tube 660. If the valve member 67 is opened, the liquid crystal flows into the tube member 660. Conversely, if the tube member 670 _, the liquid crystal does not flow into the tube member 670. 201124208 The above liquid crystal coater operates as follows. The liquid crystal-filled bottle 520 is mounted in the m = state, and the coating head unit support frame 3 (8) 7 is moved to the x and γ pumping heads according to the preset coordinates. When the W coating head needs to supply the liquid crystal to the bottle 52 ,, the coating and coating head unit 400 moves, and the two cloth heads are smashed and the support frame 300 is dragged early. The t-axis is applied to each coating head. The second shift of the unit 400: the liquid crystal supply position. herein. The liquid crystal supply is programmed to support the 655-inch pipe fittings. _ The liquid crystal tweezers can be supplied. 5 Straight 0 When the bottle 520 is moved to the liquid crystal supply position, the driving unit μ is operated: the pipe member 655 is moved toward the bottle 520. The tube support tube 655 is moved toward the bottle 520' and then inserted into the other receiving hole of the cap of the bottle 52 (). When the valve member 670 is opened, the liquid crystal is supplied through the tube 660 by acting on the inside of the liquid crystal chamber 62. To the bottle 520. If a predetermined amount of liquid crystal is supplied to the bottle 520, the valve member 67 is closed, thereby preventing the liquid crystal stored in the armor of the liquid crystal cell 62 from being supplied to the bottle 520 through the tube member 66. The drive unit 652 moves the tube support tube 655 backward. Pipe Support Camp 201124208 655 moves backwards, allowing the pipe support tube 655 to be removed from the receiving hole. However, the problem with the conventional insertion of the member, the bottle, and the cap is that if the bottle 52 supported by the bottle insertion member 51 is shaken, the bottle 520 is shaken, and the liquid crystal contained in the bottle 52 is removed. The mouth end of the bottle 52 泄漏 leaks between the inner circumference of the common hole 532 of the bottle cap 530. Further, when the liquid crystal is supplied to the bottle 52 by the splicing pipe 665, the liquid crystal leaks from the bottle end of the bottle 520 to the inner hole 532 of the cap 530. Further, when the bottle 520 is not inserted in the pre-position of the bottle insertion member 510, or if the bottle 520 is inserted into the pre-set of the bottle insertion member 510, the bottle 52 is deviated from the preset position. Therefore, the central axis of the receiving hole 533 of the crucible 530 does not correspond to the central axis of the tube support tube. Therefore, when the tube support tube milk is moved toward the bottle cap and the piece support tube 655 is to be inserted into the receiving hole 533 of the cap 530, the tube branch tube 655 may collide with the cap 530. SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the problems occurring in the prior art, and it is an object of the present invention to provide a device for leaking a liquid from a bottle to a bottle. - Another object of the present invention is to provide a device for preventing leakage of liquid crystal from the bottle to the bottle, which connects the bottle and 33 to the bottle in the preset position, thereby allowing the tube support tube of the 4 pipe member to be linearly inserted. The 201124208 injection port of the cap, the position of the 1 support tube, can easily and accurately adjust the injection passage and the tube branch of the cap, and keep the bottle fixed, thus preventing the bottle from shaking.
肌卞孢入構件的瓶子、以及位置固定蓋， 。位置固定蓋包含防漏突出件，其 入口’並從注入通道之内壁突出， ‘漏的裝置，包含瓶子插入構件、插入 以及位置固定蓋，其叙接拖早计，具有The bottle of the tendon is inserted into the component, and the position is fixed. The position fixing cover includes a leakage preventing projection, the inlet 'and protruding from the inner wall of the injection passage, the 'leakage device, including the bottle insertion member, the insertion and the position fixing cover, which are connected to the early detection device, having
以防止液晶從瓶子之外圍與注人通道之内壁間韻。 防漏突出件可具有圓柱形狀。 再者，防漏突出件可為内有孔的錐形。 、防漏突出件之最大外徑可大於瓶子之人口的内徑，以及 防漏突出件之最小外徑可小於瓶子之人口的内徑。 入瓶子插人構件可包含導引構件，以及位置固定蓋可更包 導引構件插人槽之位置固定部，導引構件固定地插入 才件插入槽’而將注入通道之入口固定在預設位置。 瓶蓋之注人通道可包含共同孔及接受孔。共同孔係與讓 ^ j口連接之連接孔相通，連接孔形成於瓶蓋之底部而 預疋冰度。接受孔形成通過共同孔之内壁及瓶蓋之側表 面’並具有預定寬度及長度之長孔的形狀。 位置固疋蓋可包含位置檢查孔，供利用雷射感測器，使 201124208 雷射感測器之雷射束通過位置檢查孔來檢查位置。 【實施方式】 於後’參考伴隨圖式將說明根據本發明較佳實施例防止 液晶從液晶塗佈機之瓶子與瓶蓋間汽漏的裝置。 圖3為具有根據本發明第一實施例防止液晶從液晶塗 佈，之瓶子與瓶蓋間洩漏的裝置之塗佈頭單元，以及液晶注 入單兀之部分側視圖，而圖4為根據本發明第—實施例防止 液晶從液晶塗佈機之瓶子與瓶蓋間洩漏的裝置之截面圖。 參考圖3及圖4，以下將說明根據本發明第一實施例防 止液晶從液晶塗佈機之瓶子與瓶蓋間洩漏的裝置。 塗佈頭單元4〇〇之支撐組件可移動地農設於構成 液晶，佈機之塗佈頭單元支撐框3〇〇(塗佈頭單元4〇〇及塗 佈頭單元支撐框300未顯示於圖3及圖4)。瓶子插入構件 71〇附接到支撐組件410 ’而瓶子72〇固定地插入瓶子插入 構件710。 瓶子插入構件710包含基部711以及側支撐部712，基 部711具有預定厚度及面積且其一側連接於支撐組^ 41〇，而側支撐部712提供於基部711的上表面邊緣，以支 撐瓶子720的外圍。側支撐部712垂直於基部711的底部。 導引構件730耦接瓶子插入構件71〇。導弓丨構件乃〇 201124208 具有預S長度，且較佳具有矩形截面。 導引構件730的一端耦接侧支撐部712的上端。導引 構件730垂直豎立。 較佳地，導引構件730利用螺栓耦接侧支撐部712。 位置固疋蓋740輕接瓶子720，也搞接導引構件730。 位置固疋蓋740耦接瓶子720，並包含瓶蓋部a及位 置固定部B ’瓶蓋部A具有注人通道ρι供液日日日注入瓶子 720，而位置固定部B從瓶蓋部a延伸出。導引構件插入 槽741提供於位置固定部B，而使導引構件73〇固定地插 入導引構件插入槽741。若導引構件73〇插入位置固定部B 的導引構件插入槽741，瓶蓋部A固定在預設位置。 較佳地，治具插入部742提供在位置固定蓋740的瓶 蓋部A與位置固定部B之間，而當位置固定蓋74〇耦接瓶 子72〇時，使得部分的治具插入治具插入部742。治具插 入部742較佳塑形成具有預定寬度及深度的腔穴。 連接孔P2形成於瓶蓋部A的底部，而使瓶子720的 瓶口連接到連接孔P2。 連接孔P2包含第一孔743以及第二孔744，其中第一 孔743形成於瓶蓋部a底部而具有預定内徑與深度，第二 孔744與第一孔743相通並具有預定深度與小於第一孔743 201124208 的内徑，螺紋形成於第二孔744的内圍。提供於瓶子72〇 之瓶口的螺紋部721圉定到第二孔744。 瓶蓋部A的注人通道pl包含共同孔州以及收受孔 746，其中共同孔745形成與連接孔P2的第二孔744相通， 而接受孔746通過共同孔745_壁與瓶蓋部a的側表面。 共同孔745具有預定深度以及小於第二孔744的内徑。 接受孔746水平通過瓶蓋部A。接受孔746較佳為具 f預定寬度及深度的長孔形狀。長孔的縱向輕直方向。 管件支辟655插人接受孔746。若接受孔746具有長孔 ，狀，雖然管件支撐管655沒有位於接收孔746的中心而 是位於中心的上方或下方’但是管件支撐管655仍可插入 接受孔7你。在管件支奸65S沒有位在接受孔糾的中 心而是位於巾㈣左方或右方的狀況下，塗佈頭單元_ 可水平移動，而使管件支料655對準接受孔746的中心。 防漏突出件747提供於瓶蓋部A之注入通道ρι的内 壁，以防止液晶從瓶子720的外圍與注入通道ρι的内圍間 Λ漏。防漏突出件747向下突出，並有圓柱形。若瓶子72〇 連接到連接孔Ρ2，防漏突出件747插入瓶子72〇的入口， 而瓶子720的瓶口定位在防漏突出件74?的外圍與第二孔 W的内圍間。瓶子72〇之瓶口的内圍與防漏突出件~j47 的外圍接觸。 201124208 &螺紋形成於第二孔744的内圍。提供於瓶子72〇 之瓶口的螺紋部721固定到第二孔744。 瓶蓋部A的注入通道P1包含共同孔745以及收受孔 746 ’，中共同孔745形成與連接孔的第二孔7料相通， 而接又孔7彳6通過共同孔％的内壁與瓶蓋部a的側表面。 共同孔745具有預定深度以及小於第二孔744的内徑。 ，受孔746水平通過瓶蓋部A。接受孔746較佳為具 f預疋寬度及深度的長孔形狀。長孔的縱向為垂直方向。 e件支樓# 655插入接受孔％。若接受孔％具有長孔 ，狀’雖然管件支撐管655沒有位於接收孔746的中心而 是位於中心的上方或下方，但是管件支撐管655仍可插入 接受=746。在管件支樓管655沒有位在接受孔％的中 心而疋位於中心的左方或右方的狀況下，塗佈頭單元4⑻ 可水平移動’而使管件支撐管655對準接受孔746的中心。 防漏突出件747提供於瓶蓋部A之注入通道ρι的内 壁，以防止液晶從瓶子720的外圍與注入通道P1的内圍間 洩漏。防漏突出件747向下突出’並有圓柱形。若瓶子72〇 連接到連接孔P2，防漏突出件747插入瓶子72〇的入口， 而瓶子720的瓶口定位在防漏突出件747的外圍與第二孔 744的内圍間。瓶子720之瓶口的内圍與防漏突出件μ? 的外圍接觸。 201124208 防漏突出件747的另一實施例顯示於圖6。參考圖式， 防漏突出件747向下突出，並具有錐形，錐形中有孔。較 佳地’防漏突出件747的最大外徑大於瓶子720入口的内 徑’且防漏突出件747的最小内徑小於瓶子720入口的内 徑。當瓶子720連接到連接孔P2時，防漏突出件747插入 瓶子720的入口，且防漏突出件747的外表面壓抵瓶子720 之瓶口端。瓶子720的瓶口定位在防漏突出件747的外圍 與第二孔744的内圍間。 若注入通道P1的共同孔745的内徑小於連接孔P2之 第二孔744的内徑’則共同孔745與第二孔744之間形成 邊界面。防漏突出件747可形成從邊界面突出。 逆筏構件750連接瓶蓋部A。螺紋穿孔748形成於瓶 蓋部A的上部，而與共同孔745相通。連接構件75〇具有 在外圍上有螺紋的螺紋體751。連接構件75〇的螺紋體751 固定到螺紋穿孔748。喷嘴連接管沿著中心軸通過連 接構件750。喷嘴連接管76〇的一端定位在瓶子72〇中。 2地^接構件，的中心軸在水平方向不與接受孔務 ==相交。若連接構件750的中心轴在水平方向不盘 746的中心轴相交’則當管件支撐管655插受 孔746，透過管件支撐管幻5注 按又 喷嘴連接管760。 夜曰曰日予防止液晶碰到 B在側表面上具有導引 741形成為具有預定寬 位置固定蓋740的位置固定部 構件插入槽741。導引構件插入槽 12 201124208 度、深度、以及長度，而使導引構件730的上部於水平或 垂直方向插人。.導引構件插人槽741的上部為封閉的 下部為開放的。 雷射感測器,.656提供於液晶注入單元65〇之支托器的 上表面，而位置檢查孔749提供於位置固定蓋74〇的預定 位置。 雷射感測器656較佳定位在管件支撐管655的正上 方。位置檢查孔749分卿成穿過瓶蓋部A的上部與位置 固定部B的上部，而置於接受孔746的上方。 當雷射感測器656及位置檢查孔749置於同一線上， 管件支擇管655及位置固定蓋74〇的接受孔746是在同一 線上。若管件支撐管655及位置固定蓋74〇的接受孔746 置於同-線上，當管件支撐管655朝瓶子72〇的位置固定 蓋740線性移動時，管件支撐管655插入位置固定蓋74〇 的接受孔746。較佳地，若雷職· 656及位置檢查孔 749置於同-線上，則管件支樓管655的中心轴對應純 置固定蓋740之接受孔746的中心軸。 雷射感測器656發射雷射束並量測雷射束的入射及反 射的時間差。當雷射感㈣656與位置檢查孔749置於同 -線上，然後發射雷射束時，雷射束通過位置檢查孔博 而被支撐組件4U)所反射，所以需要相當長的時間。因此， 可檢查雷射感測器656與位置檢查孔749是否置於同一線 13 201124208 上。 祕=7所示’防止階C提供於瓶蓋部A的表面上，而 又孔746的上方。較佳地，防止階c從瓶蓋部a的 ，面延,，而具有敢厚度、長度、以及寬度。因為空 ，從潔淨台1〇的上部喷出，防止階c防止雜質進到接受孔 喷嘴連接管的-端連接通過連接構件75〇，而另 一端則連接喷嘴單元430。 圖8及圖9顯示位置固定蓋的另-實施例。如圖8及 圖9所示’瓶子插入構件710包含基部711以及側支樓部 712 ’其中基部711具有預定厚度及面積，且一侧連接到支 擇組件4U) ’而側支撐部712提供於基部7ιι的上表面邊 緣’以支撐瓶子720的外圍(瓶子插入構件71〇、基部川、 以及支撐組件410未顯示於圖8及圖9)。側支樓部712垂 直於基。p 711底部。位置導引槽713提供於侧支撐部 的側邊。位置導引槽713具有預定寬度、深度、以及長度， 且其頂部為開放的。 除了疋位突出件D提供於位置固定部B並插入位置導 引槽713外，位置固定蓋74〇具有與第一實施例之位置固 定蓋·相_形狀。定位突出件D具有預定寬度、深度、 以及高度，而於水平或垂直方向插入位置導引槽713。 201124208 …以下說明根據本發日㈣止液晶從液晶塗佈機之瓶子與 瓶蓋間洩漏的裝置之操作及效應。 瓶子720連接位置固定蓋74〇的瓶蓋部A。此時，瓶 子720的瓶口插入瓶蓋部A的連接孔打，轉動瓶子， 而使瓶子720的螺紋部721固定到第二孔744。 +耦接瓶子720的位置固定蓋74〇連接導引構件73〇。此 時，瓶子720插入瓶子插入構件71〇，且導引構件73〇插 入位置固定蓋740的導引構件插入槽741。 讓噴嘴連接管760通過的連接構件75〇連接到位置固 定蓋740。 利用提供於液晶注射單元650的雷射感測器656檢查 管件^管655與位置_蓋74〇之接受孔746的位置 後，官件支撐管655向前鶴’而插人接受孔％。液晶 透過管件660注入瓶子720。 在液晶已注入瓶子720後，管件支撐管幻5向後移動 而從接受孔746移出。 根據本發明，在瓶子720耦接位置固定蓋74〇的狀態 下，導引構件730插入位置固定蓋74〇的導引構件插入^ ，而使瓶子720固定不移動，因而防止瓶子72〇搖晃。 因此，防止填充瓶子720的液晶因為瓶子72〇搖晃而從瓶 子720的瓶口與位置固定蓋74〇間茂漏。 15 201124208 於本發明中，插入瓶子72〇入口的防漏突出件^ 提供於連接瓶子720的位置固定蓋74〇。因此，當支撐管 ^ 660的管件支樓管655插入接受孔％❿注入液晶到瓶 液bb不會從瓶子720之瓶口端與注入通道ρι的内壁 I朗。尤其是在防漏突出件747具有錐賴狀況下防 ，突出件747壓抵瓶子72〇瓶口的入σ，而完全地防止液 =從瓶子720入口的内表面與位置固定蓋的外表面間 戌漏。即使當瓶子720搖晃時，瓶子72〇中所含的液晶流 到瓶子720的瓶口與位置固定蓋74〇，防漏突出件w防 止液晶洩漏。 再者，當瓶子720連接位置固定蓋74〇的瓶蓋部a， 然後導引構件73G插人位置固定蓋的導引構件插入槽 741時’瓶子720固定在預定位置，此外，位置固定蓋74〇 j接受孔7杯與讓管件660插入之管件支樓管奶置於同 一線上。因此，即使發生震動，不會改變瓶子72〇與接受 孔746的位置。 、 由於位置固定蓋740的接受孔746與管件支撐管655 置於同線上，當官件支撐管655朝瓶子的位置固定蓋74〇 移動而將管件支樓管655插入位置固定蓋74〇的接受孔746 ，，防止管件支撐管655碰撞位置固定蓋74〇。再者，在 管件支撐管655精確地插入位置固定蓋74〇之注入通道的 接受孔746的狀態下，透過連接管件支撐管655的管件66〇 供應液晶，因而防止液晶從瓶子72〇洩漏出。 16 201124208 接受孔746具有長孔形狀，而長孔置於垂直方向。因 此一在塗佈頭單元4⑻在:垂直方向不移動的狀態下，增加 了官件支撐管655在垂直方向的可容許移動範圍。 ^上所述，本發明提供防止液晶從液晶塗佈機之瓶子 與瓶蓋2洩漏的裝置，其中防漏突出件提供於連接瓶子的 位置f定蓋，而插入瓶子的入口，因而當支撐管件的管件 支#嘗插入接党孔以注入液晶到瓶子時，防止液晶從瓶子 的瓶口端與注入通道的内壁間洩漏。 叢門^ Ϊ μ Ϊ發日服供防止液晶從液晶塗佈機之槪子與瓶 件^二二1,’其中導引構件插入位置固定蓋的導引構 曰’ 5時瓶子連接位置固定蓋，而使瓶子固定不移 ^子^防止瓶子搖晃。結果防止瓶子中所含的液晶因為 瓶子搖晃而從瓶子的瓶口與瓶蓋間洩漏。In order to prevent the liquid crystal from the periphery of the bottle and the inner wall of the injection channel. The leakage preventing protrusion may have a cylindrical shape. Furthermore, the leakage preventing projections may be tapered with a hole therein. The maximum outer diameter of the leakage preventing protrusion may be larger than the inner diameter of the population of the bottle, and the minimum outer diameter of the leakage preventing protrusion may be smaller than the inner diameter of the population of the bottle. The insertion member of the bottle may include a guiding member, and the position fixing cover may further comprise a position fixing portion of the guiding member inserted into the slot, the guiding member is fixedly inserted into the insertion slot of the member and the inlet of the injection channel is fixed at the preset position. The injection channel of the cap can include a common hole and a receiving hole. The common hole system communicates with the connection hole for connecting the j port, and the connection hole is formed at the bottom of the bottle cap to pre-ice. The receiving holes are formed in the shape of elongated holes which pass through the inner wall of the common hole and the side surface of the bottle cap and have a predetermined width and length. The position fixing cover may include a position inspection hole for detecting the position of the laser beam of the 201124208 laser sensor through the position inspection hole by using a laser sensor. [Embodiment] Hereinafter, a device for preventing liquid crystal leakage from a bottle and a cap of a liquid crystal coater according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. 3 is a partial view of a coating head unit having a device for preventing leakage of liquid crystal from a liquid crystal coating bottle and a cap according to a first embodiment of the present invention, and a liquid crystal injection unit, and FIG. 4 is a view of the present invention. A cross-sectional view of a device for preventing leakage of liquid crystal from a bottle and a cap of a liquid crystal coater. Referring to Figures 3 and 4, an apparatus for preventing leakage of liquid crystal from between a bottle and a cap of a liquid crystal coater according to a first embodiment of the present invention will be described below. The support unit of the coating head unit 4 is movably disposed on the coating head unit support frame 3 constituting the liquid crystal, and the coating head unit 4〇〇 and the coating head unit support frame 300 are not shown in Figure 3 and Figure 4). The bottle insertion member 71 is attached to the support assembly 410' and the bottle 72 is fixedly inserted into the bottle insertion member 710. The bottle insertion member 710 includes a base portion 711 having a predetermined thickness and an area and a side portion thereof connected to the support group 41, and a side support portion 712 is provided at an upper surface edge of the base portion 711 to support the bottle 720. The periphery. The side support portion 712 is perpendicular to the bottom of the base portion 711. The guiding member 730 is coupled to the bottle insertion member 71A. The guide bow member is 〇 201124208 having a pre-S length and preferably having a rectangular cross section. One end of the guiding member 730 is coupled to the upper end of the side supporting portion 712. The guiding member 730 is vertically erected. Preferably, the guiding member 730 is coupled to the side support portion 712 by a bolt. The position fixing cover 740 is lightly connected to the bottle 720 and also engages the guiding member 730. The position fixing cover 740 is coupled to the bottle 720 and includes a bottle cap portion a and a position fixing portion B. The bottle cap portion A has a filling passage ρι, which is injected into the bottle 720 on a daily basis, and the position fixing portion B is from the cap portion a. Extend out. The guide member insertion groove 741 is provided to the position fixing portion B, and the guide member 73 is fixedly inserted into the guide member insertion groove 741. If the guide member 73 is inserted into the guide member of the position fixing portion B into the groove 741, the cap portion A is fixed at the preset position. Preferably, the jig insertion portion 742 is provided between the cap portion A of the position fixing cover 740 and the position fixing portion B, and when the position fixing cover 74 is coupled to the bottle 72, the part of the jig is inserted into the jig. The insertion portion 742. The jig insertion portion 742 is preferably molded to form a cavity having a predetermined width and depth. The connection hole P2 is formed at the bottom of the cap portion A, and the bottle opening of the bottle 720 is connected to the connection hole P2. The connecting hole P2 includes a first hole 743 formed at a bottom of the cap portion a having a predetermined inner diameter and a depth, and a second hole 744 communicating with the first hole 743 and having a predetermined depth and less than The inner diameter of the first hole 743 201124208 is formed in the inner circumference of the second hole 744. The threaded portion 721 provided to the mouth of the bottle 72A is set to the second hole 744. The injection passage pl of the cap portion A includes a common hole state and a receiving hole 746, wherein the common hole 745 is formed to communicate with the second hole 744 of the connection hole P2, and the receiving hole 746 passes through the common hole 745_ wall and the cap portion a Side surface. The common hole 745 has a predetermined depth and is smaller than an inner diameter of the second hole 744. The receiving hole 746 passes horizontally through the cap portion A. The receiving hole 746 is preferably in the shape of a long hole having a predetermined width and depth. The longitudinal direction of the long hole is straight. The pipe fitting 655 is inserted into the receiving hole 746. If the receiving hole 746 has a long hole shape, although the tube support tube 655 is not located at the center of the receiving hole 746 but is located above or below the center, the tube supporting tube 655 can still be inserted into the receiving hole 7. In the case where the pipe fitting 65S is not located at the center of the receiving hole but in the left or right side of the towel (four), the coating head unit _ can be horizontally moved, and the tube member 655 is aligned with the center of the receiving hole 746. The leakage preventing projection 747 is provided on the inner wall of the injection passage ρ of the cap portion A to prevent the liquid crystal from leaking from the periphery of the bottle 720 and the inner circumference of the injection passage ρ. The leakage preventing protrusion 747 protrudes downward and has a cylindrical shape. If the bottle 72 is connected to the connection port 2, the leakage preventing projection 747 is inserted into the inlet of the bottle 72, and the bottle opening of the bottle 720 is positioned between the periphery of the leakage preventing projection 74 and the inner circumference of the second hole W. The inner circumference of the bottle mouth of the bottle 72 is in contact with the outer periphery of the leakage preventing protrusion ~j47. The 201124208 & thread is formed in the inner circumference of the second hole 744. A threaded portion 721 provided at the mouth of the bottle 72A is fixed to the second hole 744. The injection passage P1 of the cap portion A includes a common hole 745 and a receiving hole 746'. The common hole 745 is formed to communicate with the second hole 7 of the connecting hole, and the hole 7彳6 passes through the inner wall of the common hole and the cap The side surface of the portion a. The common hole 745 has a predetermined depth and is smaller than an inner diameter of the second hole 744. The hole 746 is horizontally passed through the cap portion A. The receiving aperture 746 is preferably in the shape of a long aperture having a pre-twist width and depth. The longitudinal direction of the long hole is vertical. E-piece branch # 655 is inserted into the receiving hole %. If the receiving hole % has a long hole, the shape of the tube supporting tube 655 is still inserted or received, although the tube supporting tube 655 is not located at the center of the receiving hole 746 but above or below the center. In the case where the pipe branch pipe 655 is not located at the center of the receiving hole % and the crucible is located to the left or right of the center, the coating head unit 4 (8) can be horizontally moved to align the pipe supporting pipe 655 with the center of the receiving hole 746. . The leakage preventing projection 747 is provided on the inner wall of the injection passage ρ of the cap portion A to prevent liquid crystal from leaking from the periphery of the bottle 720 and the inner circumference of the injection passage P1. The leakage preventing projection 747 protrudes downwardly and has a cylindrical shape. If the bottle 72 is connected to the attachment hole P2, the leakage preventing projection 747 is inserted into the inlet of the bottle 72, and the bottle opening of the bottle 720 is positioned between the periphery of the leakage preventing projection 747 and the inner circumference of the second hole 744. The inner circumference of the bottle opening 720 is in contact with the periphery of the leakage preventing projection μ. Another embodiment of the 201124208 leak proof tab 747 is shown in FIG. Referring to the drawings, the leakage preventing projection 747 protrudes downward and has a tapered shape with a hole in the taper. Preferably, the maximum outer diameter of the leakage preventing projection 747 is greater than the inner diameter of the inlet of the bottle 720 and the minimum inner diameter of the leakage preventing projection 747 is smaller than the inner diameter of the inlet of the bottle 720. When the bottle 720 is attached to the attachment hole P2, the leakage preventing projection 747 is inserted into the inlet of the bottle 720, and the outer surface of the leakage preventing projection 747 is pressed against the mouth end of the bottle 720. The mouth of the bottle 720 is positioned between the periphery of the leakage preventing projection 747 and the inner circumference of the second hole 744. If the inner diameter of the common hole 745 of the injection passage P1 is smaller than the inner diameter ' of the second hole 744 of the connection hole P2, a common surface is formed between the common hole 745 and the second hole 744. The leakage preventing protrusion 747 may be formed to protrude from the boundary surface. The reverse member 750 connects the cap portion A. A threaded through hole 748 is formed in the upper portion of the bottle cap portion A to communicate with the common hole 745. The connecting member 75A has a threaded body 751 having a thread on the periphery. The threaded body 751 of the connecting member 75A is fixed to the threaded through hole 748. The nozzle connecting pipe passes through the connecting member 750 along the central axis. One end of the nozzle connecting tube 76 is positioned in the bottle 72A. 2 The center axis of the joint member does not intersect the receiving hole == in the horizontal direction. If the central axis of the connecting member 750 intersects in the horizontal direction without the central axis of the disk 746, then the tube support tube 655 is inserted into the hole 746 through the tube support tube and the nozzle connecting tube 760. The nighting day is prevented from hitting the liquid crystal B. The guide 741 having the guide 741 formed on the side surface is formed as a position fixing portion member insertion groove 741 having a predetermined wide position fixing cover 740. The guiding member is inserted into the groove 12 201124208 degrees, depth, and length, and the upper portion of the guiding member 730 is inserted in the horizontal or vertical direction. The upper portion of the guide member insertion groove 741 is closed and the lower portion is open. A laser sensor, .656 is provided on the upper surface of the holder of the liquid crystal injection unit 65, and a position inspection hole 749 is provided at a predetermined position of the position fixing cover 74A. Laser sensor 656 is preferably positioned directly above tube support tube 655. The position inspection hole 749 is passed through the upper portion of the cap portion A and the upper portion of the position fixing portion B, and placed above the receiving hole 746. When the laser sensor 656 and the position inspection hole 749 are placed on the same line, the tube member selection tube 655 and the receiving hole 746 of the position fixing cover 74 are on the same line. If the tube support tube 655 and the receiving hole 746 of the position fixing cover 74 are placed on the same line, when the tube support tube 655 moves linearly toward the position of the bottle 72, the tube support tube 655 is inserted into the position fixing cover 74. Hole 746 is accepted. Preferably, if the Lei Shi 656 and the position inspection hole 749 are placed on the same line, the central axis of the tube branch pipe 655 corresponds to the central axis of the receiving hole 746 of the pure fixing cover 740. Laser sensor 656 emits a laser beam and measures the time difference between the incidence and reflection of the laser beam. When the laser sense (4) 656 is placed on the same line as the position check hole 749, and then the laser beam is emitted, the laser beam is reflected by the support member 4U) by the position check hole, so it takes a considerable time. Therefore, it can be checked whether the laser sensor 656 and the position inspection hole 749 are placed on the same line 13 201124208. As shown in Fig. 7, the preventive step C is provided on the surface of the cap portion A, and above the hole 746. Preferably, the step c is prevented from being stretched from the cap portion a, and has a thickness, a length, and a width. Since it is empty, it is ejected from the upper portion of the clean table 1 to prevent the step c from preventing the impurities from entering the receiving hole. The end of the nozzle connecting pipe is connected through the connecting member 75, and the other end is connected to the nozzle unit 430. Figures 8 and 9 show another embodiment of the position fixing cover. As shown in FIGS. 8 and 9, the 'bottle insertion member 710 includes a base portion 711 and a side branch portion 712' in which the base portion 711 has a predetermined thickness and area, and one side is connected to the replacement assembly 4U)' and the side support portion 712 is provided The upper surface edge ' of the base 7 is to support the periphery of the bottle 720 (the bottle insertion member 71, the base, and the support assembly 410 are not shown in Figs. 8 and 9). The side branch portion 712 is perpendicular to the base. The bottom of p 711. The position guiding groove 713 is provided on the side of the side support portion. The position guiding groove 713 has a predetermined width, depth, and length, and its top is open. The position fixing cover 74 has a shape in which the position fixing cover 74 is fixed to the position fixing portion B and inserted into the position guiding groove 713. The positioning protrusion D has a predetermined width, depth, and height, and the position guiding groove 713 is inserted in the horizontal or vertical direction. 201124208 ... The following describes the operation and effect of the device for leaking liquid crystal from the bottle and the cap of the liquid crystal coater according to the present day (4). The bottle 720 is connected to the cap portion A of the position fixing cover 74A. At this time, the bottle opening of the bottle 720 is inserted into the connection hole of the cap portion A, and the bottle is rotated to fix the threaded portion 721 of the bottle 720 to the second hole 744. + The position fixing cover 74 of the coupling bottle 720 is connected to the guiding member 73A. At this time, the bottle 720 is inserted into the bottle insertion member 71, and the guide member 73 is inserted into the guide member insertion groove 741 of the position fixing cover 740. The connecting member 75A through which the nozzle connecting pipe 760 passes is connected to the position fixing cover 740. After the position of the tube 655 and the receiving hole 746 of the position_cover 74 is checked by the laser sensor 656 provided to the liquid crystal injection unit 650, the official support tube 655 is inserted into the front of the crane and accepts the hole %. The liquid crystal is injected into the bottle 720 through the tube member 660. After the liquid crystal has been injected into the bottle 720, the tube support tube is moved backwards from the receiving hole 746. According to the present invention, in a state where the bottle 720 is coupled to the position fixing cover 74, the guiding member 730 is inserted into the guiding member insertion of the position fixing cover 74, so that the bottle 720 is fixed and does not move, thereby preventing the bottle 72 from being shaken. Therefore, the liquid crystal filling the bottle 720 is prevented from leaking from the mouth of the bottle 720 and the position fixing cover 74 due to the shaking of the bottle 72. 15 201124208 In the present invention, the leakage preventing projections inserted into the inlet of the bottle 72 are provided in the position fixing cover 74 of the connection bottle 720. Therefore, when the pipe branch pipe 655 of the support pipe ^660 is inserted into the receiving hole %, the liquid crystal is injected into the bottle liquid bb without coming from the bottle end of the bottle 720 and the inner wall I of the injection path. In particular, in the case where the leakage preventing projection 747 has a constricted condition, the protruding member 747 is pressed against the σ of the bottle 72, and the liquid is completely prevented from being between the inner surface of the inlet of the bottle 720 and the outer surface of the position fixing cover. Missing. Even when the bottle 720 is shaken, the liquid crystal contained in the bottle 72 turns to the bottle opening of the bottle 720 and the position fixing cover 74, and the leakage preventing protrusion w prevents the liquid crystal from leaking. Further, when the bottle 720 is coupled to the cap portion a of the position fixing cover 74, and then the guide member 73G is inserted into the guide member insertion groove 741 of the position fixing cover, the bottle 720 is fixed at a predetermined position, and further, the position fixing cover 74 is fixed. 〇 j accepts the hole 7 cups on the same line as the tube branch tube milk that allows the tube 660 to be inserted. Therefore, even if vibration occurs, the position of the bottle 72 〇 and the receiving hole 746 is not changed. Since the receiving hole 746 of the position fixing cover 740 is placed on the same line as the tube supporting tube 655, when the official supporting tube 655 moves toward the position of the bottle fixing cover 74, the tube branch 655 is inserted into the position fixing cover 74. The hole 746 prevents the tube support tube 655 from colliding with the position fixing cover 74. Further, in a state where the tube support tube 655 is accurately inserted into the receiving hole 746 of the injection passage of the position fixing cover 74, the liquid tube 66 of the connection tube supporting tube 655 supplies liquid crystal, thereby preventing the liquid crystal from leaking out from the bottle 72. 16 201124208 The receiving hole 746 has a long hole shape, and the long hole is placed in a vertical direction. Therefore, in the state where the coating head unit 4 (8) does not move in the vertical direction, the allowable movement range of the official support tube 655 in the vertical direction is increased. As described above, the present invention provides a device for preventing liquid crystal from leaking from a bottle and a cap 2 of a liquid crystal coater, wherein the leak preventing projection is provided at a position f of the connection bottle, and is inserted into the inlet of the bottle, thus supporting the pipe member The pipe fitting ## is inserted into the party hole to inject liquid crystal into the bottle to prevent liquid crystal from leaking from the bottle mouth end of the bottle and the inner wall of the injection channel.丛门^ Ϊ μ Ϊ 日 服 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止 防止, so that the bottle does not move ^ ^ ^ to prevent the bottle from shaking. As a result, the liquid crystal contained in the bottle is prevented from leaking from the bottle opening of the bottle and the cap due to the shaking of the bottle.
蓋間供防止液晶從液晶塗佈機之瓶子與瓶 件奸'Μ、、中導引構件插人位置固定蓋的導引構 同時瓶子連接位置固定蓋的瓶蓋部，而SI 撐势置於同—t位置固定蓋的接受孔與管件柄接的管件支 与Ui!-、上°即使發生震動時，此類結構防止瓶子 與瓶盍的接受孔改變位置。 肌卞 蓋間洩明從液晶塗佈機之瓶子與瓶 的接受孔與管件支器檢查瓶蓋 置於问一線上。於此，若瓶蓋 17 201124208 的接受孔與管件支料是置㈣―線上，#管件支樓管朝 瓶乎線性移動時，管件支撐管插入接受孔。 【圖式簡單說明】 一參考詳細說明及伴隨圖式，可更清楚了解本發明上述及 其他目的、特徵、以及優點，其中： 圖1為顯示液晶塗佈機及液晶供應裝置範例之侧視圖； 圖2為顯示構成液晶塗佈機之塗佈頭單元之側視圖； 处&圖、3為具有根據本發明第—實施例防止液晶從液晶塗 ^機之瓶子與瓶蓋間⑽的裝置之塗佈頭單it之部分側視 圖4為根據本發明第—實施例防止液晶從液晶塗 之瓶子與瓶蓋間洩漏的裝置之截面圖； 涂欲^ 5為包含於根據本發明第—實施例防止液晶從液晶 =機之好與瓶蓋間⑷觸裝置巾陳置蚊蓋之截面 透視圖， 冷佈罐本發明第-實施娜歧晶從液晶 主佈機之瓶子與瓶盍間@漏的裝 突出件實施例之截面圖； iUU的防漏 涂佈含於根據本發明第—實施例防止液晶從液晶 二甚1 〃瓶蓋間茂漏的褒置中的位置固定蓋的防止 階之截面圖；以及 心显07防止 圖8及圖9分別為根縣發㈣ 晶塗佈機线子她^朗_置域前 201124208 【主要元件符號說明】 10潔淨台 200平台 400塗佈頭單元 430喷嘴單元 520瓶子 531連接孔 533接受孔 540管件 551螺紋體 610底板 630壓力供應單元 650液晶注入單元 652驅動單元 654支托器 656雷射感測器 670閥件 711基部 713位置導引槽 721螺紋部 740位置固定蓋 742治具插入部 744第二孔 746接受孔 100主框架 300塗佈頭單元支撐框 410支撐組件 510瓶子插入構件 530瓶蓋 532共同孔 534螺紋穿孔 550連接構件 552連接孔 620液晶槽 640連接管 651基件 653滑件 655管件支撐管 660管件 710瓶子插入構件 712側支撐部 720瓶子 730導引構件 741導引構件插入槽 743第一孔 745共同孔 747防漏突出件 201124208 748螺紋穿孔 750連接構件 760喷嘴連接管 B位置固定部 D定位突出件 P2連接孔 749位置檢查孔 751螺紋體 A瓶蓋部 C防止階 P1注入通道 20The cover between the cover prevents the liquid crystal from the bottle of the liquid crystal coating machine and the bottle, and the guiding member of the guiding member is inserted into the position of the cover, and the bottle is connected to the cap portion of the cover, and the SI is placed The receiving hole of the same-t position fixing cover and the pipe fitting of the pipe fitting are connected with Ui!-, upper. Even when vibration occurs, such a structure prevents the receiving hole of the bottle and the bottle from changing position. The leak between the tendon and the cover is placed on the line from the receiving hole of the bottle and the bottle of the liquid crystal applicator and the tube holder. Here, if the receiving hole and the pipe support of the cap 17 201124208 are placed on the (four)-line, the pipe support pipe is inserted into the receiving hole when the pipe branch pipe moves linearly toward the bottle. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more apparent from the aspects of the description and the accompanying drawings. 2 is a side view showing a coating head unit constituting a liquid crystal coater; and FIG. 3 is a device having a device for preventing liquid crystal from a bottle and a cap (10) of a liquid crystal coating machine according to a first embodiment of the present invention. A side view 4 of a portion of the coating head sheet is a cross-sectional view of a device for preventing leakage of liquid crystal from a liquid crystal coated bottle and a bottle cap according to the first embodiment of the present invention; the coating is included in the first embodiment according to the present invention. Preventing the liquid crystal from the liquid crystal = the machine is good with the cap (4) touch device, the cross-sectional perspective view of the mosquito cover, the cold cloth can be the first embodiment of the present invention from the liquid crystal main machine between the bottle and the bottle A cross-sectional view of the embodiment of the protruding member; the leakage preventing coating of the iUU is included in the preventive step of the position fixing cover in the device for preventing leakage of the liquid crystal from the liquid crystal cover between the caps according to the first embodiment of the present invention. Figure; and heart display 07 Fig. 8 and Fig. 9 are the roots of the four (4) crystal coating machine, respectively. ^ ^ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Receiving hole 540 pipe member 551 Threading body 610 Base plate 630 Pressure supply unit 650 Liquid crystal injection unit 652 Drive unit 654 Support 656 Laser sensor 670 Valve member 711 Base portion 713 Position guiding groove 721 Thread portion 740 Position fixing cover 742 Fixture Insertion portion 744 second hole 746 receiving hole 100 main frame 300 coating head unit support frame 410 support assembly 510 bottle insertion member 530 bottle cover 532 common hole 534 thread perforation 550 connection member 552 connection hole 620 liquid crystal groove 640 connection tube 651 base member 653 slider 655 pipe support tube 660 pipe 710 bottle insertion member 712 side support portion 720 bottle 730 guide member 741 guide member insertion groove 743 first hole 745 common hole 747 leakage preventing protrusion 201124208 748 thread perforation 750 connection member 760 nozzle Connecting pipe B position fixing portion D positioning protruding piece P2 connecting hole 749 position inspection hole 751 thread body A bottle cap portion C preventing step P1 injection passage 20