200305530 玖、發明說明 【發明所屬之技術領域】 本發明係關於商品之包裝步驟中，用於包裝紙的 膠的糊膠塗敷裝置及適宜於同裝置的糊膠噴嘴者。 【先前技術】 用於商品之包裝的外包裝包裝裝置內，爲對於包 膠而組入有糊膠塗敷裝置。 圖7爲顯示外包裝裝置之包裝步驟的一例的步驟 首先，如圖箭頭A所示，包裝紙1 00係從堆紙機 著紙供給位置1 02被抽出。此時，從糊膠塗敷裝置 著移動之包裝紙1 〇〇的一端部背面噴射糊膠。如箭: 示，將商品104搬送至設定於紙供給位置102下方 供給位置1 〇 5後，如箭頭C所示，商品1 0 4被抬向 在向著該上面方向移動的過程中，配置於紙供給位 的包裝紙1 〇〇覆被於商品1 04的上面及兩側面。接 品104與包裝紙100 —起水平移動（箭頭D)，在其| 程中將包裝紙1 〇〇折入商品1 04的下面側。隨後， 形態折入由商品1 04的兩端部向著外側延出的包裝 的耳部l〇〇a，同時，糊膠塗敷裝置106向著其局部 噴射糊膠，使耳部1 〇〇a的重疊部分接合，結束包裝 圖8爲顯示從上述箭頭C向著箭頭D時的步驟的 圖。 參照同圖，更爲詳細地說明從箭頭C向著箭頭D 驟，在紙供給位置102中，藉由稱爲鋸齒導引107 312/發明說明書(補件)/92-04/92100907 糊膠上 裝紙上 圖。 1 0 1向 103向 頭B所 的商品 上方。 置102 著，商 多動過 以一定 紙100 100b 步驟。 模式 時的步 的構成 5 200305530 爲鋸齒狀的多根導引桿，支持著包裝紙1 0 0的下面，包裝 紙1 0 0的一端部背面塗敷著糊膠1 0 8。當如箭頭C所示， 將商品1〇4抬向上方時，包裝紙100也被壓向商品104而 向上方移動，同時藉由設於途中的折入導引109而將包裝 紙1 0 0的兩邊折入商品1 0 4的兩側面側。 接著，沿著箭頭D方向移動安裝著板狀的下折褶板1 1 0 的推進器1 1 1，沿著箭頭D方向使商品1 04及包裝紙1 00 水平移動，同時，下折褶板110將包裝紙1〇〇的一邊l〇〇b 折入商品1 04的下面側。接著，藉由設於其移動路徑上的 折入導引112，將包裝紙100的另一邊100c折入商品104 的下面側。在此，被折入之包裝紙1 00的另一邊1 00c，在 其端部附近塗敷著糊膠1 〇 8。 作爲以往之糊膠塗敷裝置，周知具有，例如，日本特開 昭63 - 1 25 1 62號公報所揭示之糊膠塗敷裝置的構成。該公 報所揭示之糊膠塗敷裝置（糊膠槍），係介由形成於槍本體 內部的流通路以高壓從噴嘴口噴出糊膠的構成。 (發明所欲解決之問題） 上述以往之糊膠塗敷裝置，因爲係以高壓從噴嘴口噴出 糊膠的構成，因此，糊膠的噴出量多而並不經濟，而且若 以多量的糊膠堆積於包裝紙1 〇 〇的狀態予以塗敷的結果， 將會造成如下的問題。 (A)在圖8所示紙供給位置102將由鋸齒導引107所支持 的包裝紙1 〇 〇抬上時’隨著其兩邊的折入動作的塗敷於包 裝紙100的一端部背面的糊膠108被轉寫於鋸齒導引 6 312/發明說明書(補件)/92-04/92100907 200305530 107。鋸齒導引1〇7雖爲了最小限地抑制糊膠的轉寫量而形 成爲鋸齒狀，但是，若塗敷於包裝紙1 〇 〇的糊膠塗敷量多 時’必然地對於鋸齒導引1 07的糊膠的轉寫量也將增多。 % 如此，對於鋸齒導引1 0 7轉寫入多量的糊膠的情況，會有 使得下一供入的包裝紙100黏著於鋸齒導引1〇7，而引起 搬送不良的擔憂。 (B) 此外，如圖8所示，在藉由折入導引112將包裝紙 1〇〇的另一邊100c折入商品104的下面側時，同邊10〇 〇 如打鞭般旋轉。此時，若塗敷於同邊1 0 0 c的端部附近的糊鲁 膠108的量多時’則隨著同邊iooc的旋轉，糊膠1〇8向周 圍飛散’而會污損及下折褶板1 1 0等的周邊商品、商品〗〇4 及包裝紙1 0 0等。其結果，有引起動作不良及包裝品質下 降的擔憂。 (C) 若爲不易吸收水分的包裝紙，當糊膠的塗敷量太多 時，糊膠會從包裝紙的端部溢出，從而有引起包裝品質下 降的擔憂。在此，以往有增擴糊膠上膠邊的必要，此也造 成必須增大包裝紙的尺寸。 (D) 在將多量糊膠塗敷於包裝紙的情況，含於糊膠的大量 水分被吸入包裝紙內。當將如此吸入多量水分的包裝紙乾 燥時，會產生縐折及波紋，從而有包裝品質降低之虞。 在此，本發明係鑒於上述情況而完成者，其目的在於提 供呈霧狀噴射糊膠、以較少糊膠的塗敷量實現高品質的接 a 合狀態，同時，在使用於商品的包裝步驟的情況，可解消 、 上述各種問題的糊膠噴嘴及糊膠塗敷裝置。 312/發明說明書(補件)/92-04/92100907 200305530 【發明內容】 爲達成上述目的，有關糊膠噴嘴之申請專利範圍第1項 之發明，其特徵爲：具備噴嘴本體，前端面形成有使糊膠 流出用的噴嘴口；帽構件，安裝於該噴嘴本體的外周；剖 面爲環狀的氣體通路，形成於噴嘴本體與帽構件之間；及 氣體噴射口，從噴嘴口的周圍向著其前方以一定的收束角 使供給氣體通路之氣體噴射，並且，藉由從氣體噴射口噴 射的氣體，以使噴嘴口的周圍形成負壓。 藉由該構成，藉由負壓的形成，以使從噴嘴口流出的糊 膠被有效吸入從氣體噴射口噴射的氣體中，於是，呈霧狀 擴散而塗敷於接合對象。擴散爲霧狀的糊膠即使爲少量也 可均勻地塗敷於接合對象，從而可實現高品質的接合。此 外，形成負壓的噴嘴口的周圍，不易殘留糊膠，據此，還 可抑制隨著糊膠的乾燥造成的噴嘴口的堵塞。 在此，本發明之糊膠噴嘴也可爲將噴嘴本體的周面形成 爲較氣體噴射口的外部延出，同時，沿著該延出的周面予 以氣體噴射的構成（申請專利範圍第2項）。若如此地予以 構成，可避免從噴嘴口流出的糊膠進入氣體噴射口的周圍 而造成的堵塞及氣體噴射方向的混亂。 此外，還可爲使形成氣體通路的噴嘴本體的周面及帽構 件的內周面，至少在自氣體噴射口的一定領域內爲撥水加 工的構成（申請專利範圍第3項）。藉此，以防止噴嘴口的 堵塞的目的，即使爲在不使用時將噴嘴口部分浸泡於水中 的情況，仍可藉由表面的張力防止水從氣體噴射口侵入氣 312/發明說明書(補件)/92-04/92100907 200305530 體通路內。 又’還可爲將形成氣體通路的噴嘴本體的周面形成爲向 著前端予以縮頸的錐面狀，同時，將形成氣體通路的帽構 件的內周面也形成爲向著前端予以縮頸的錐面狀，在此等 噴嘴本體的周面及帽構件的內周面之間，形成向著氣體噴 射口方向而剖面積減小的氣體通路，且，於噴嘴本體的周 面之氣體噴射口的後方附近位置形成圓周方向的凹溝的構 成（申請專利範圍第4項）。藉由如此之構成，在將噴嘴口 部分浸泡於水中的情況，可藉由凹溝來防止水從藉由毛細 管現象由氣體噴射口侵入氣體通路內。 此外，有關糊膠塗敷裝置之申請專利範圍第5項之發 明，其特徵爲：具備上述構成之糊膠噴嘴；向著噴嘴口供 給液狀的糊膠的供給機構；及提供氣體給氣體通路的氣體 供給機構。藉由該構成，可獲得與上述糊膠噴嘴的發明相 同的作用效果。 又，本發明之糊膠塗敷裝置係具備有噴嘴堵塞防止單元 的構成，而該噴嘴堵塞防止單元包括：殼體，係設於糊膠 噴嘴的周圍，且、在與該糊膠噴嘴間形成液體充塡室，同 時，在與噴嘴口對向的位置具有開口；連通液體充塡室的 液體通路；開口於該通路的活塞***孔；活塞構件，係介 由該活塞***孔，用以按壓或吸引液體通路內的液體；及 驅動該活塞構件的驅動機構（申請專利範圍第6項）。 利用予以如此地構成，藉由活塞構件的驅動，使充塡於 液體充塡室內的液體的水位變化，即可使噴嘴口浸泡於液 9 312/發明說明書(補件)/92-04/92100907 200305530 體中，或是，使噴嘴口從液體中露出。也就是說，利用在 噴射糊膠時使噴嘴口從液面露出，而於未噴射糊膠時使噴 嘴口浸泡於液體中，即使在噴嘴口部分殘留有糊膠的情 況，仍可防止因糊膠的乾燥引起的噴嘴口的堵塞。 此外，上述構成之噴嘴堵塞防止單元，係藉由適宜延長 液體通路，可增加液體的充塡量。當液體的充塡量少時， 由於液體中溶化的糊膠濃度在短時間上升，因此，有產生 頻繁地實施液體交換作業的必要，但是，利用如上述的方 法增加液體的充塡量，即可增長同作業的實施週期而可圖 獲生產率的提升。 此外，本發明之糊膠塗敷裝置還可爲具備閉塞上述殻體 的開口的蓋體的構成（申請專利範圍第7項）。藉此，可抑 制長時間不使用時充塡於液體充塡室內液體的蒸發，可防 止噴嘴口的液體的露出。 (發明效果） 如上述說明，根據本發明，係呈霧狀噴射糊膠、以較少 糊膠的塗敷量而可實現高品質的接合狀態。 【實施方式】 以下，依照圖式詳細說明本發明之實施形態。 參照圖1〜圖4說明有關本發明之糊膠噴嘴之實施形態。 如圖1所示，糊膠噴嘴1係由噴嘴本體1 〇及安裝於該 噴嘴本體1 〇外周的帽構件2 0所構成。圖2爲噴嘴本體1 0 的剖面圖，圖3爲帽構件2 0的剖面圖。 如圖2所示，噴嘴本體1 0係於其內部形成有糊膠供給 10 312/發明說明書(補件)/92-04/92100907 200305530 路1 1，前端面1 2形成有連通糊膠供給路1 1的噴嘴口 1 3。 噴嘴本體1 〇的前端部外周面1 4，形成向著前端予以縮頸 的錐面狀。此外，於噴嘴本體1 〇的周面中間部形成凸緣部 1 5。元件符號1 6爲螺合帽構件2 0的外螺紋部，1 7爲將糊 膠噴嘴1組入後述之糊膠塗敷裝置用的外螺紋部。 如圖3所示，帽構件2 0係形成爲圓錐環狀，從中間部 向著前端部的內周面2 1，係形成爲向著前端予以縮頸的錐 面狀。帽構件20的前端形成有開口 22。此外，從中間部 向著基端部的內周面形成有內螺紋部2 3，利用將該內螺紋 部2 3螺合於噴嘴本體1 0的外螺紋部1 6，即可構成圖1所 示糊膠噴嘴1。 如圖1所示，噴嘴本體1 0的前端部外周面1 4及帽構件 2 0的內周面2 1之間，形成剖面環狀的氣體通路3 0，該氣 體通路3 0連通形成於帽構件2 0及噴嘴本體1 0的凸緣部 1 5的氣體供給路3 1。氣體通路3 0的前端係藉由帽構件2 0 的開口 22而形成氣體噴射口 32。 圖4爲顯示從氣體通路向著噴嘴本體〗〇的構成的放大 圖。本實施形態中，係留有微小間隙呈環狀形成氣體噴射 口 3 2。該間隙的尺寸a，例如係調整在〇. 〇 5 m m左右。該 間隙係在噴嘴本體1 0的凸緣部1 5及帽構件2 0的端面2 0 a 間，利用***薄板（塡隙片）而可高精度進行調整。 如此，藉由以微小間隙形成氣體噴射口 3 2，藉由後述之 噴嘴堵塞防止單元即使在被浸入液體（水）中的情況，仍可 避免液體流入氣體通路3 0內。又，也可爲由彈性材料構成 11 312/發明說明書(補件)/92-04/92100907 200305530 帽構件2 0的全體或至少之前端部附近，經常閉塞氣體噴射 口 3 2，同時，藉由氣體壓力打開該氣體噴射口 3 2的構成。 在此，噴嘴本體1 0的前端部外周面1 4係爲使其前端較 氣體噴射口 3 2外部延出者，沿著該延出之周面形成噴射氣 體的構成。延出長度b可爲任意，但是，本實施形態中係 設定爲〇 . 5 m m左右。藉由予以如此地構成’可避免從噴嘴 口 13流出的糊膠進入氣體噴射口 32的周圍而造成的堵塞 及氣體噴射方向的混亂。 此外，噴嘴本體1 〇的前端部外周面1 4及帽構件2 0的 內周面2 1，藉由聚四氟乙烯（商標名）等作撥水加工’以增 大液體的表面張力，防止水從氣體噴射口 3 2侵入氣體通路 3 0內。 又，於噴嘴本體1 〇的前端部外周面1 4之氣體噴射口 3 2 的後方附近位置形成周方向的凹溝1 8，可藉由該凹溝1 8 來防止水從藉由毛細管現象由氣體噴射口 3 2侵入氣體通 路30內。 上述構成之糊膠噴嘴1係從氣體噴射口 3 2噴射供給氣 體通路3 0的氣體，同時，從噴嘴口 1 3以低壓力流出液狀 的糊膠。氣體噴射口 3 2噴射的氣體’係從噴嘴口 1 3的周 圍向著其前方以一定的收束角α噴射。並且，藉由如此般 噴射氣體，以使噴嘴口 1 3的周圍形成負壓狀態。據此，從 噴嘴口 1 3流出的糊膠，被有效吸入從氣體噴射口 3 2噴射 的氣體中，於是，呈霧狀擴散而塗敷於接合對象40。 如此般擴散爲霧狀的糊膠，即使爲少量也可均勻地塗敷 12 312/發明說明書(補件)/92-04/92100907 200305530 於接合對象4 ο ’從而可實現高品質的接合。此外，形成負 壓的噴嘴口 1 3的周圍，不易殘留糊膠，據此，還可抑制隨 著糊膠的乾燥造成的噴嘴口 1 3的堵塞。 從氣體噴射口 3 2噴射的氣體的收束角α ，大致對應於 噴嘴本體1 〇的前端部外周面1 4的錐面角，藉由調整該錐 面角’藉可以任意收束角α噴射氣體。在此，若減窄收束 角α，則塗敷於接合對象4 0的糊膠寬度變窄，同時，所塗 敷的糊膠變厚。相反地，若增寬收束角α ，則塗敷於接合 對象40的糊膠寬度變寬，同時，所塗敷的糊膠厚度變薄。 在此，若預先準備噴嘴本體1 0的前端部外周面1 4的錐面 角互異的多數種類的糊膠噴嘴1，對應於接合對象4 〇作適 宜交換，即可以指定寬度及厚度塗敷糊膠。 再者，參照圖5及圖6說明本發明之糊膠塗敷裝置的實 施形態。 糊膠塗敷裝置係於裝置本體50上安裝著上述糊膠噴嘴1 而構成者。裝置本體內部形成有糊膠流通路5 1，以未圖示 的來自糊膠供給源的弱壓力對於該糊膠流通路5 1內供給 液狀的糊膠。該糊膠流通路5 1與糊膠噴嘴1的糊膠供給路 1 1連通。 裝置本體5 0的基端部設有針5 2的驅動機構5 3。棒狀的 針5 2係介由糊膠流通路5 1延伸至糊膠噴嘴1的糊膠供給 路1 1，藉由驅動機構5 3向軸方向驅動，從內部側開閉噴 嘴口 1 3。當藉由該針5 2開放噴嘴口 1 3的內側時，糊膠供 給路1 1內的糊膠從噴嘴口 1 3向外部流出。也就是說，係 13 312/發明說明書(補件)/92-04/92100907 200305530 形成糊膠流通路5 1、針5 2、其驅動機構5 3及未圖示的糊 膠供給源，向著噴嘴口 1 3供給液狀的糊膠的供給機構的構 成。 此外’裝置本體5 0上設有連通未圖示的氣體供給源（氣 體供給機構）及氣體供給路3 1的連接閥5 4，介由該連接閥 5 4從未圖示的氣體供給源對於氣體供給路3 1供給壓縮氣 體。 又’糊膠塗敷裝置具備噴嘴堵塞防止單元60。同單元 6 0包括：殻體6 2，係設於糊膠噴嘴丨的周圍，且、在與該 糊膠噴嘴1間形成液體充塡室6 1 ;連通液體充塡室6 1的 液體通路6 3 ;開口於該通路6 3的活塞***孔6 4 ;及活塞 構件65，係介由該活塞***孔64，用以按壓或吸引液體通 路63內的液體（水）。該殻體62在與噴嘴口 13對向的位置 形成開口 6 6。此外，活塞構件6 5係藉由未圖示的驅動圓 筒（驅動機構）沿軸方向驅動。 上述構成之噴嘴堵塞防止單元6 0，係藉由活塞構件6 5 的驅動，使充塡於液體充塡室6 1內的液體的水位變化，即 可使噴嘴口 1 3浸泡於液體中，或是，使噴嘴口丨3從液體 中露出。也就是說，利用在噴射糊膠時使噴嘴口 1 3從液面 露出，而於未噴射糊膠時使噴嘴口 1 3浸泡於液體中，藉由 液體洗淨噴嘴口 1 3的周圍，具有防止起因於糊膠的乾燥的 噴嘴口 1 3的堵塞的功能。 在此，液體通路63係形成爲較長，以增加液體的充塡 量。如已敘述之，當液體的充塡量少時，由於液體中溶化 14 312/發明說明書(補件)/92-04/92100907 200305530 的糊膠濃度在短時間上升，因此，有產生頻繁地實施液體 交換作業的必要，但是，利用如上述的方法增加液體的充 塡量，即可增長同作業的實施週期，而可圖獲生產率的提 升。 此外，如圖6所示，還可於殼體62的開口 66及活塞插 入？L 64，設置可裝脫自如的蓋體70、71。在糊膠塗敷裝置 不使用時，於殼體62的液體充塡室6 1內以噴嘴口 1 3的滿 水程度充塡液體後，藉由此等蓋體70、71來閉塞開口 66 及活塞***孔6 4，即可抑制長時間的不使用時的液體的蒸 發，可防止噴嘴口 1 3的液體的露出。又，在將蓋體71安 裝於活塞***孔64時，先從活塞***孔64取出活塞構件 6 5° 【圖式簡單說明】 圖1爲本發明之實施形態之糊膠噴嘴的剖面圖。 圖2爲噴嘴本體的剖面圖。 圖3爲帽構件的剖面圖。 圖4爲顯示從氣體通路向著噴嘴本體的構成的放大圖。 圖5爲本發明之實施形態之糊膠塗敷裝置的剖面圖。 圖6爲顯示本發明之實施形態之糊膠塗敷裝置的不使用 狀態的剖面圖。 圖7爲顯示外包裝裝置之包裝步驟的一例的步驟圖。 圖8爲顯示圖7所示包裝步驟的局部的模式圖。 (元件符號說明） a 間隙的尺寸 15 312/發明說明書(補件)/92-04/92100907 200305530 b 延出長度 α 收束角 1 糊膠噴嘴 10 噴嘴本體 11 糊膠供給路 12 前端面 13 噴嘴口 14 前端部外周面 15 凸緣部 16 外螺紋部 17 外螺紋部 18 凹溝 2 0 帽構件 20a 端面 2 1 內周面 22 開口 23 內螺紋部 30 氣體通路 3 1 氣體供給路 32 氣體噴射口 40 接合對象 50 裝置本體 51 糊膠流通路 52 針 16200305530 发明. Description of the invention [Technical field to which the invention belongs] The present invention relates to a paste application device for glue for packaging paper and a paste nozzle suitable for the same device in the packaging step of a product. [Prior Art] A paste coating device is incorporated in the outer packaging device used for the packaging of goods for the purpose of encapsulation. Fig. 7 is a procedure showing an example of the packaging steps of the outer packaging device. First, as shown by arrow A, the packaging paper 100 is pulled out from the paper feeding position 102 of the stacker. At this time, the glue is sprayed from the back surface of one end of the wrapping paper 100 moved by the glue application device. As shown by the arrow, after the product 104 is transported to the supply position 1 set below the paper supply position 102, as shown by the arrow C, the product 104 is lifted toward the upper position and disposed on the paper. The wrapping paper 100 at the supply position is covered on the top and both sides of the product 104. The receiver 104 and the wrapping paper 100 move horizontally (arrow D), and in the process, the wrapping paper 100 is folded into the lower side of the product 104. Subsequently, the shape is folded into the ear portion 100a of the package extended from both ends of the product 104 to the outside, and at the same time, the paste application device 106 sprays paste on the part thereof, so that the ear portion 100a The overlapping portions are joined and the package is completed. FIG. 8 is a diagram showing a procedure when the arrow C goes to the arrow D. Referring to the same figure, the step from arrow C to arrow D will be described in more detail. In the paper feed position 102, it is referred to as a sawtooth guide 107 312 / Invention Specification (Supplement) / 92-04 / 92100907. Figure on paper. 1 0 1 to 103 head to the product of head B. Set 102, the business has to take a certain paper 100 100b steps. The structure of the steps in the mode 5 200305530 is a plurality of jagged guide rods, which support the lower surface of the wrapping paper 100, and the back surface of one end of the wrapping paper 100 is coated with glue 108. When the product 104 is lifted upward as shown by the arrow C, the packaging paper 100 is also pressed toward the product 104 and moved upward, and at the same time, the packaging paper 100 is moved by the folding guide 109 provided in the middle. Fold both sides into both sides of product 104. Next, the pusher 1 1 1 with the plate-shaped lower fold plate 1 1 0 installed is moved in the direction of arrow D, and the product 1 04 and the wrapping paper 100 are moved horizontally in the direction of arrow D. At the same time, the lower fold plate 110 Fold one side 100b of the wrapping paper 100 into the lower side of the product 104. Next, the other side 100c of the wrapping paper 100 is folded into the lower surface side of the product 104 by the folding guide 112 provided on its moving path. Here, the other side 100c of the folded wrapping paper 100 is coated with a paste 108 near its end. As a conventional paste application device, a configuration is known, for example, disclosed in Japanese Patent Application Laid-Open No. 63-1 25 1 62. The gluing device (gluing gun) disclosed in this publication is constructed by ejecting gluing from a nozzle opening at a high pressure through a flow path formed inside the gun body. (Problems to be Solved by the Invention) The above-mentioned conventional paste coating device has a structure in which paste is ejected from a nozzle opening at a high pressure. Therefore, a large amount of paste is not economical, and if a large amount of paste is used, As a result of coating in a state of being stacked on the wrapping paper 100, the following problems are caused. (A) When the wrapping paper 100 supported by the sawtooth guide 107 is lifted up at the paper feeding position 102 shown in FIG. 8, the paste applied to the back surface of one end of the wrapping paper 100 with the folding operation on both sides thereof. Glue 108 is transliterated in Serrated Guide 6 312 / Invention Specification (Supplement) / 92-04 / 92100907 200305530 107. Although the sawtooth guide 107 is formed into a zigzag shape in order to minimize the transfer amount of the glue, if the amount of glue applied to the wrapping paper 100 is large, it is inevitable for the sawtooth guide The transfer volume of 1 07 glue will also increase. % In this way, in the case where a large amount of glue is written by the sawtooth guide 107 revolutions, there is a concern that the next feeding paper 100 will adhere to the sawtooth guide 107 and cause poor conveyance. (B) As shown in FIG. 8, when the other side 100 c of the wrapping paper 100 is folded into the lower side of the commodity 104 by the folding guide 112, the same side 100 is rotated like a whip. At this time, if the amount of the paste glue 108 applied near the end of the same side 1 0 0 c is large, 'the glue glue 108 scatters to the surroundings as the same side iooc rotates, and the stain will be damaged and Peripheral products and products such as the lower pleated board 1 10, etc., and wrapping paper 100 and so on. As a result, there is a fear of causing malfunctions and deterioration of packaging quality. (C) If it is a wrapping paper that does not absorb moisture easily, when the amount of paste applied is too large, the paste may overflow from the end of the wrapping paper, which may cause a reduction in packaging quality. In the past, it was necessary to increase the glue edge of the paste, which also required the size of the wrapping paper to be increased. (D) When a large amount of paste is applied to a wrapping paper, a large amount of water contained in the paste is sucked into the wrapping paper. When the wrapping paper which has absorbed a large amount of moisture in this way is dried, creases and corrugations may occur, and there is a possibility that the packaging quality may be deteriorated. Here, the present invention has been made in view of the above circumstances, and its object is to provide a spray spray of glue in a mist form to achieve a high-quality bonding state with a small amount of glue to be applied. In the case of the steps, the glue nozzle and the glue coating device which can solve the above problems can be eliminated. 312 / Invention Specification (Supplement) / 92-04 / 92100907 200305530 [Summary of the Invention] In order to achieve the above purpose, the invention of item 1 of the patent application concerning paste nozzles is characterized by having a nozzle body and a front end surface formed Nozzle opening for flowing out glue; cap member mounted on outer periphery of the nozzle body; ring-shaped gas passage formed in cross section between the nozzle body and the cap member; and gas ejection port toward the nozzle opening The gas in the gas supply path is sprayed forward at a certain closing angle, and a negative pressure is formed around the nozzle port by the gas sprayed from the gas spray port. With this configuration, the paste flowing out of the nozzle opening is effectively sucked into the gas ejected from the gas ejection opening by the formation of a negative pressure, and then spreads in a mist form and is applied to the joining object. Even if a small amount of paste is diffused, the paste can be evenly applied to the joining object, thereby achieving high-quality joining. In addition, the glue is not easily left around the nozzle opening where the negative pressure is formed, and accordingly, clogging of the nozzle opening caused by the drying of the glue can be suppressed. Here, the glue nozzle of the present invention may have a configuration in which the peripheral surface of the nozzle body is formed to extend outside the gas injection port, and at the same time, a gas is sprayed along the extended peripheral surface (patent application scope No. 2) item). With such a configuration, it is possible to prevent the glue flowing out of the nozzle opening from entering the surroundings of the gas ejection opening and confusion of the gas ejection direction. In addition, the peripheral surface of the nozzle body forming the gas passage and the inner peripheral surface of the cap member may be configured to be water repellent at least in a certain area from the gas injection port (the third aspect of the patent application scope). Thereby, in order to prevent clogging of the nozzle opening, even if the nozzle opening is partially immersed in water when not in use, it is possible to prevent water from entering the gas from the gas injection opening by the surface tension 312 / Invention Specification (Supplementary Document) ) / 92-04 / 92100907 200305530 in the body pathway. In addition, the peripheral surface of the nozzle body forming the gas passage may be formed into a tapered surface that is necked toward the front end, and the inner peripheral surface of the cap member forming the gas passage may be formed into a tapered neck. In a planar shape, a gas passage is formed between the peripheral surface of the nozzle body and the inner peripheral surface of the cap member, and the cross-sectional area decreases toward the gas injection port, and is behind the gas injection port on the peripheral surface of the nozzle body. A circumferential groove is formed at a nearby location (No. 4 in the scope of patent application). With this configuration, when the nozzle opening is partially immersed in water, the groove can be used to prevent water from entering the gas passage from the gas injection opening through the capillary phenomenon. In addition, the invention of item 5 of the scope of patent application for a paste application device is characterized by having a paste nozzle having the above-mentioned structure; a supply mechanism for supplying a liquid paste to the nozzle opening; and a device for supplying gas to the gas passage. Gas supply mechanism. With this configuration, it is possible to obtain the same effects as the invention of the above-mentioned glue nozzle. The paste application device of the present invention includes a nozzle clogging prevention unit. The nozzle clogging prevention unit includes a casing provided around the paste nozzle, and formed between the paste nozzle and the paste nozzle. The liquid filling chamber has an opening at a position opposite to the nozzle opening; a liquid passage communicating with the liquid filling chamber; a piston insertion hole opened in the passage; a piston member is inserted through the piston insertion hole for pressing Or attract the liquid in the liquid passage; and a driving mechanism for driving the piston member (the 6th in the scope of patent application). With such a structure, the water level of the liquid filled in the liquid filling chamber can be changed by the driving of the piston member, so that the nozzle mouth can be immersed in the liquid 9 312 / Invention Manual (Supplement) / 92-04 / 92100907 200305530 In the body, or make the nozzle opening exposed from the liquid. In other words, the nozzle opening is exposed from the liquid surface when the glue is sprayed, and the nozzle opening is immersed in the liquid when the glue is not sprayed. Even if the glue remains in the nozzle opening, it can still prevent the paste. Clogging of nozzles caused by glue drying. In addition, the nozzle clogging prevention unit configured as described above can increase the liquid filling capacity by appropriately extending the liquid passage. When the amount of liquid filling is small, the concentration of the dissolved glue in the liquid rises in a short time, so it is necessary to frequently perform liquid exchange operations. However, the method described above is used to increase the filling amount of liquid, that is, Can increase the implementation cycle of the same operation and can achieve productivity improvements. In addition, the paste application device of the present invention may have a configuration including a cover body that closes the opening of the case (the 7th in the scope of patent application). This can suppress the evaporation of the liquid filled in the liquid filling chamber when not in use for a long time, and prevent the liquid at the nozzle opening from being exposed. (Effects of the Invention) As described above, according to the present invention, the paste can be sprayed in a mist state, and a small amount of paste can be applied to achieve a high-quality bonded state. [Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. An embodiment of the glue nozzle according to the present invention will be described with reference to FIGS. 1 to 4. As shown in FIG. 1, the glue nozzle 1 is composed of a nozzle body 10 and a cap member 20 attached to an outer periphery of the nozzle body 10. FIG. 2 is a cross-sectional view of the nozzle body 10, and FIG. 3 is a cross-sectional view of the cap member 20. As shown in FIG. 2, the nozzle body 10 is formed with a glue supply 10 inside the nozzle body 10 312 / Invention Manual (Supplement) / 92-04 / 92100907 200305530 Road 1 1 and the front end surface 12 is formed with a connected glue supply path. 1 1 的 口 口 1 3． The outer peripheral surface 14 of the front end portion of the nozzle body 10 is formed in a tapered shape that is necked toward the front end. In addition, a flange portion 15 is formed in a middle portion of the peripheral surface of the nozzle body 10. The reference numeral 16 is an external thread portion of the screw cap member 20, and 17 is an external thread portion for assembling the glue nozzle 1 into a glue application device described later. As shown in FIG. 3, the cap member 20 is formed in a conical ring shape, and is formed in a tapered shape that is necked toward the front end from the middle portion toward the inner peripheral surface 21 of the front end portion. An opening 22 is formed at the front end of the cap member 20. In addition, an internally threaded portion 23 is formed on the inner peripheral surface from the intermediate portion to the base end portion, and the internally threaded portion 23 is screwed to the externally threaded portion 16 of the nozzle body 10 to form a structure shown in FIG. 1.胶 胶 Nozzle 1. As shown in FIG. 1, a gas passage 30 having an annular cross-section is formed between the outer peripheral surface 14 of the front end portion of the nozzle body 10 and the inner peripheral surface 21 of the cap member 20, and the gas passage 30 communicates with the cap. The gas supply path 31 of the member 20 and the flange portion 15 of the nozzle body 10. The front end of the gas passage 30 is formed with a gas injection port 32 through an opening 22 of the cap member 20. Fig. 4 is an enlarged view showing the structure from the gas passage toward the nozzle body. In this embodiment, the gas injection port 32 is formed in a ring shape with a small gap left. The size a of the gap is, for example, adjusted to about 0.05 mm. This gap is between the flange portion 15 of the nozzle body 10 and the end face 20 a of the cap member 20, and can be adjusted with high precision by inserting a thin plate (crevice sheet). In this way, by forming the gas injection port 32 with a small gap, the nozzle clogging prevention unit described later can prevent the liquid from flowing into the gas passage 30 even when immersed in the liquid (water). Alternatively, the gas injection port 32 may be closed by the elastic material 11 312 / Invention Specification (Supplement) / 92-04 / 92100907 200305530 or at least near the front end, and the gas injection port 3 2 may be closed at the same time. The gas pressure opens the gas injection port 32. Here, the outer peripheral surface 14 of the front end portion of the nozzle body 10 has a configuration in which the front end extends outward from the gas injection port 32, and a jet gas is formed along the extended peripheral surface. The extension length b may be arbitrary, but in this embodiment, it is set to about 0.5 mm. By constructing in this way, it is possible to avoid clogging caused by the glue flowing out of the nozzle opening 13 and the surroundings of the gas ejection opening 32 and confusion of the gas ejection direction. In addition, the outer peripheral surface 14 of the front end portion of the nozzle body 10 and the inner peripheral surface 21 of the cap member 20 are water-repellently processed with polytetrafluoroethylene (trade name) to increase the surface tension of the liquid and prevent Water enters the gas passage 30 from the gas injection port 32. Further, a circumferential groove 18 is formed at a position near the rear of the gas ejection port 3 2 on the outer peripheral surface 14 of the front end portion of the nozzle body 10, and the groove 18 can prevent water from flowing through the capillary phenomenon. The gas injection port 32 penetrates into the gas passage 30. The paste nozzle 1 having the above-mentioned structure sprays the gas supplied to the gas passage 30 from the gas injection port 32, and at the same time, flows out the liquid paste from the nozzle port 13 at a low pressure. The gas' ejected from the gas injection port 32 is injected from the periphery of the nozzle port 13 toward the front thereof at a certain closing angle α. Then, the gas is ejected in such a manner that the negative pressure state is formed around the nozzle openings 13. According to this, the glue discharged from the nozzle openings 13 is effectively sucked into the gas sprayed from the gas injection openings 32, and then spreads in a mist form and is applied to the joining object 40. This paste spreads like a mist, and can be evenly applied even in small amounts. 12 312 / Invention Manual (Supplement) / 92-04 / 92100907 200305530 To the bonding object 4 ’’ can achieve high-quality bonding. In addition, it is difficult for the glue to remain around the nozzle openings 13 forming a negative pressure, and accordingly, clogging of the nozzle openings 13 caused by the drying of the glue can be suppressed. The closing angle α of the gas injected from the gas injection port 32 corresponds approximately to the taper angle of the outer peripheral surface 14 of the front end portion of the nozzle body 10, and the cone angle can be arbitrarily adjusted by adjusting the taper angle ' gas. Here, if the narrowing angle α is narrowed, the width of the paste applied to the bonding target 40 becomes narrow, and at the same time, the applied paste becomes thick. Conversely, if the closing angle α is widened, the width of the paste applied to the joining object 40 becomes wider, and at the same time, the thickness of the paste applied becomes thinner. Here, if a plurality of types of glue nozzles 1 having different taper angles at the outer peripheral surface 14 of the front end portion of the nozzle body 10 are prepared in advance, the width and thickness of the glue nozzle 1 can be appropriately changed according to the joining target 4. Glue. An embodiment of the paste application device of the present invention will be described with reference to Figs. 5 and 6. The glue application device is constructed by mounting the glue nozzle 1 on the device body 50. A paste flow path 51 is formed inside the apparatus body, and a liquid paste is supplied into the paste flow path 51 with a weak pressure from a paste supply source (not shown). The glue flow path 51 communicates with the glue supply path 1 1 of the glue nozzle 1. A drive mechanism 53 of a needle 52 is provided at a base end portion of the device body 50. The rod-shaped needle 5 2 extends through the glue flow path 51 to the glue supply path 11 of the glue nozzle 1 and is driven in the axial direction by the drive mechanism 53 to open and close the nozzle opening 13 from the inner side. When the inside of the nozzle opening 13 is opened by the needle 52, the glue in the adhesive supply path 11 flows out from the nozzle opening 13 to the outside. In other words, it is 13 312 / Invention Specification (Supplement) / 92-04 / 92100907 200305530 to form the glue flow path 5 1, the needle 5 2, the driving mechanism 5 3, and a glue supply source (not shown) toward the nozzle. The structure of the supply mechanism which supplies the liquid paste in the port 13 is provided. Furthermore, a connection valve 5 4 is provided in the apparatus body 50 to communicate a gas supply source (a gas supply mechanism) (not shown) and a gas supply path 31, and a gas supply source (not shown) is connected through the connection valve 54. The gas supply path 31 supplies compressed gas. Furthermore, the glue application device includes a nozzle clogging prevention unit 60. The same unit 60 includes a housing 62, which is arranged around the glue nozzle 1 and forms a liquid filling chamber 6 1 between the glue nozzle 1 and the liquid passage 6 communicating with the liquid filling chamber 61. 3; a piston insertion hole 6 4 opened in the passage 63; and a piston member 65 through the piston insertion hole 64 to press or attract the liquid (water) in the liquid passage 63. The casing 62 has an opening 66 at a position facing the nozzle opening 13. The piston member 65 is driven in the axial direction by a drive cylinder (drive mechanism) (not shown). The nozzle clogging prevention unit 60 configured as above is driven by the piston member 65 to change the water level of the liquid filled in the liquid filling chamber 61 to immerse the nozzle opening 13 in the liquid, or If yes, the nozzle openings 3 are exposed from the liquid. That is, the nozzle opening 13 is exposed from the liquid surface when the glue is sprayed, and the nozzle opening 13 is immersed in the liquid when the glue is not sprayed, and the periphery of the nozzle opening 13 is cleaned by the liquid. A function to prevent clogging of the nozzle openings 13 caused by the drying of the glue. Here, the liquid passage 63 is formed to be long in order to increase the liquid filling capacity. As already mentioned, when the filling amount of the liquid is small, the paste concentration of 14 312 / Invention Specification (Supplement) / 92-04 / 92100907 200305530 melts in the liquid in a short time, so it is frequently carried out. The liquid exchange operation is necessary. However, by using the method described above to increase the liquid filling capacity, the implementation cycle of the same operation can be increased, and productivity can be improved. In addition, as shown in FIG. 6, can the piston 66 be inserted through the opening 66 of the housing 62? L 64 is provided with detachable covers 70 and 71. When the glue coating device is not in use, the liquid filling chamber 61 of the housing 62 is filled with liquid to the extent that the nozzle opening 13 is full of water, and the openings 66 and 71 are closed by the covers 70 and 71. The piston is inserted into the hole 64, which can suppress the evaporation of the liquid when it is not used for a long time, and can prevent the liquid at the nozzle port 13 from being exposed. When the cover 71 is installed in the piston insertion hole 64, the piston member 65 is first taken out from the piston insertion hole 64. [Brief Description of the Drawings] Fig. 1 is a cross-sectional view of a paste nozzle according to an embodiment of the present invention. Fig. 2 is a sectional view of a nozzle body. Fig. 3 is a sectional view of a cap member. FIG. 4 is an enlarged view showing a configuration from a gas passage toward a nozzle body. Fig. 5 is a cross-sectional view of a paste applying apparatus according to an embodiment of the present invention. Fig. 6 is a cross-sectional view showing an unused state of the paste application device according to the embodiment of the present invention. FIG. 7 is a process chart showing an example of a packaging process of the outer packaging device. FIG. 8 is a schematic view showing a part of the packaging step shown in FIG. 7. (Explanation of component symbols) a Dimension of the gap 15 312 / Invention specification (Supplement) / 92-04 / 92100907 200305530 b Extend length α Convergence angle 1 Adhesive nozzle 10 Nozzle body 11 Adhesive supply path 12 Front end face 13 Nozzle Port 14 Front end outer peripheral surface 15 Flange portion 16 Male screw portion 17 Male screw portion 18 Groove 2 0 Cap member 20a End surface 2 1 Inner peripheral surface 22 Opening 23 Female screw portion 30 Gas passage 3 1 Gas supply path 32 Gas injection port 40 Joining object 50 Device body 51 Adhesive flow path 52 Needle 16
312/發明說明書(補件)/92-04/92100907 200305530 5 3 驅 動 機 構 > 54 連 接 閥 60 噴 嘴 堵 塞 防 止單元 6 1 液 體 充 塡 室 62 殼 體 63 液 體 通 路 64 活 塞 插 入 孔 65 活 塞 構 件 66 開 □ 70 蓋 體 7 1 蓋 體 100 包 裝 紙 100a 耳 部 1 00b 局 部 100b 一 邊 100c 另 一 邊 10 1 堆 紙 機 102 紙 供 給 位 置 103 糊 膠 塗 敷 裝 置 104 商 品 105 商 品 供 給 位 置 106 糊 膠 塗 敷 裝 置 107 鋸 齒 導 引 108 糊 膠 312/發明說明書(補件)/92-04/92100907 200305530 109 折入導引 110 下折褶板 111 推進器 112 折入導引312 / Invention Manual (Supplement) / 92-04 / 92100907 200305530 5 3 Drive mechanism> 54 Connection valve 60 Nozzle clogging prevention unit 6 1 Liquid filling chamber 62 Housing 63 Liquid passage 64 Piston insertion hole 65 Piston member 66 Open □ 70 Lid 7 1 Lid 100 Wrapping paper 100a Ear 1 00b Part 100b One side 100c The other side 10 1 Stacker 102 Paper supply position 103 Adhesive coating device 104 Product 105 Product supply position 106 Adhesive coating device 107 Sawtooth guide 108 Glue 312 / Invention specification (Supplement) / 92-04 / 92100907 200305530 109 Fold-in guide 110 Lower fold plate 111 Pusher 112 Fold-in guide
312/發明說明書(補件)/92-04/92100907 18312 / Invention Specification (Supplement) / 92-04 / 92100907 18