200944294 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種熱炼喷塗設備（Thermal Spray Equipment)，且特別是有關於一種低溫熱熔機之搶頭 (Cooled Thermal Spray Head)。 【先前技術】 熱熔喷塗設備是一種元件的表面加工設備，其可依各 φ 種不同之目的，在元件表面喷覆各種不同之塗層，以增進 元件之防腐蝕、防鏽、耐磨、絕緣、隔熱或防電磁干擾等 能力。 習知有多種不同之熱熔喷塗設備，分別具有不同之特 性，而可由使用者依不同之需求來選擇使用。例如，火焰 熔射（Flame Spray)即是利用氧氣與燃氣混合燃燒的火焰 作為熱源，來熔化噴覆材料，再經高壓空氣加速帶送吹向 底材表面’使堆積、凝固而形成塗層或膜厚。電弧熔射 ❹ （Electric ARC Spray )是利用兩條分別接往不同電極之 金屬線相接觸而產生電弧，使瞬間產生之高熱將金屬線材 熔化，再經高壓空氣吹細霧化，帶送吹向底材，堆積、凝 固而形成塗層或膜厚。 高速火焰熔射（High Velocity Oxy-Fuel，簡稱 HV0F) 是利用氧氣混合比例增大時之非穩定燃燒，其所形成之前 端震波，以超音速將熔融之粉末衝擊、堆積並凝固於底材 表面而形成塗層或膜厚。電漿熔射（Plasma spray)是利 200944294 用離子化氣體（氬、氳、氮、氦）所產生之高熱現象作為 熱源，以熔融粉末狀喷覆材料，再藉氣體之吹送，使堆積、 凝固而形成塗層或膜厚。 前述幾種熱熔機之喷塗方法，所形成之喷覆塗層的結 _ 合強度與孔隙率雖各有所長，惟因其表面加工溫度常高達 攝氏兩千度以上，並不適於3C產品的使用。雖然，習知之 電弧熱熔機的熔射溫度，已可低至攝氏80度左右，惟其對 於3C產品而言，溫度仍嫌過高，且所形成之喷覆塗層的結 ⑩ 合強度與孔隙率仍有不足。 【發明内容】 有鑑於此，本發明之目的是提供一種低溫熱熔機之槍 頭，其可應用於電弧熔射機器設備上，以執行超低溫之表 面加工喷塗作業，十分適於3C產品之表面加工使用。 本發明之另一目的是提供一種低溫熱熔機之槍頭，其 可應用於電弧熔射機器設備上，以執行超低溫之表面加工 © 喷塗作業，且可提昇所形成之喷覆塗層的結合強度與孔隙 率。 為達上述及其他目的，本發明提供一種低溫熱熔機之 搶頭，包括：喷嘴（Nozzle)與兩線材導管（Wire Guides)。 其中，喷嘴具有儲氣室與成圓錐形之電弧放電室。儲氣室 設置有可由空壓機導入壓縮氣體之第一進氣孔，以及連通 室外並成一預設角度之兩導管孔。電弧放電室設置有連通 室外，以便自空壓機導入壓縮氣體之第二進氣孔、連通儲 200944294 氣室以自儲氣室引入主氣流之第三進氣孔、 自儲氣室！丨人辅助氣流之多數個第四進氣孔、及可將二 之喷覆材料帶送吹向基材之出氣孔。 、 兩線材導管係分別配置於喷嘴上之兩導 具有導線穿孔與連通導線穿孔及職室之第200944294 Nine, invention description: [Technical field of invention] The present invention relates to a thermal spray equipment, and in particular to a Cooled Thermal Spray Head. . [Prior Art] The hot melt spraying equipment is a surface processing equipment for components. It can spray various coatings on the surface of the components according to the purpose of each φ to improve the corrosion resistance, rust resistance and wear resistance of the components. , insulation, heat insulation or anti-electromagnetic interference capabilities. It is known that there are a variety of different hot melt spraying equipments, each having different characteristics, and can be selected by the user according to different needs. For example, Flame Spray uses a flame that is mixed with oxygen and gas to be used as a heat source to melt the sprayed material, and then is sent to the surface of the substrate by high-pressure air to accelerate the deposition and solidification to form a coating. Or film thickness. Electric ARC Spray uses two wires that are connected to different electrodes to make an arc, which causes the high-intensity heat to melt the metal wire, and then atomizes it with high-pressure air. The substrate is deposited and solidified to form a coating or film thickness. High Velocity Oxy-Fuel (HV0F) is an unsteady combustion when the oxygen mixing ratio is increased. The front end shock wave is formed, and the molten powder is impacted, accumulated and solidified on the surface of the substrate at supersonic speed. The coating or film thickness is formed. Plasma spray is a high-heat phenomenon generated by ionized gas (argon, helium, nitrogen, helium) as a heat source. The powder is sprayed with a powder, and then blown by gas to make it accumulate and solidify. The coating or film thickness is formed. In the above-mentioned spraying methods of several hot melt machines, the joint strength and porosity of the spray coating formed have their own lengths, but the surface processing temperature is often as high as two thousand degrees Celsius or more, which is not suitable for 3C products. usage of. Although the melting temperature of the conventional arc hot melt machine can be as low as about 80 degrees Celsius, the temperature is still too high for the 3C product, and the knot strength and porosity of the formed spray coating are formed. The rate is still insufficient. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a low temperature hot melt machine gun head which can be applied to an arc spray machine to perform ultra-low temperature surface processing spraying operation, which is very suitable for 3C products. Surface processing is used. Another object of the present invention is to provide a nozzle for a low temperature hot melt machine which can be applied to an arc spray machine to perform ultra-low temperature surface processing © spraying operation and to enhance the formed spray coating Bond strength and porosity. To achieve the above and other objects, the present invention provides a low temperature hot melt machine that includes a nozzle (Nozzle) and two wire guides (Wire Guides). Wherein, the nozzle has a gas storage chamber and a conical arc discharge chamber. The air storage chamber is provided with a first air inlet hole through which the compressed gas can be introduced by the air compressor, and two duct holes which communicate with the outside and form a predetermined angle. The arc discharge chamber is provided with a communication outdoor, so as to introduce a second air inlet hole of the compressed gas from the air compressor, and a third air inlet hole for connecting the main air flow from the air storage chamber to the air supply chamber of the 200944294 air chamber, and the self-storage chamber! A plurality of fourth air inlet holes for the auxiliary air flow and two air spray materials for blowing the air to the air outlet of the substrate. Two wire guides are respectively arranged on the nozzles. The two guides have the wire perforation and the connecting wire perforation and the first part of the office.
長度，儲氣室外延伸進入儲氣室内至鄰近電:J 之位置°兩線材導管之導線穿孔係供如鋅線等金屬線= Ο 設，以便驅動機構可驅動金屬線材，使金屬線材以前 没角度漸趨靠近，並進入噴嘴之電弧放電室内進行火#放 電。而其上之連通導線穿孔及儲氣室的第五進氣孔，^可 引入部分之儲氣室氣流，以冷卻金屬線材，降低金屬線材 之溫度。 在一實施例中，此低溫熱熔機之槍頭的喷嘴包括：喷 嘴底座、喷嘴上蓋、兩隔離板、彈性元件、噴嘴環 Ring)、放電室内蓋、放電室外蓋及外固定環。 其中’喷嘴底座具有底面、頂面、前端與後端。喷嘴 ❹底座頂面*又置有位於後端之底座後牆與由後端向前端漸縮 而成前述預設角度之兩底座侧牆，以使兩底座侧牆與底座 後牆間形成前述之兩導管孔，兩導管孔間並設置有底座凹 陷部。此外，底座後牆邊並設置有連通頂面與底面，以自 空壓機導入壓縮氣體之第一進氣孔’底面與頂面間則設置 有連通至前端之底座通孔，以形成部分之第二進氣孔。 喷嘴上蓋對應於喷嘴底座之兩底座侧牆與底座後牆， 分別設置有兩上蓋側牆與上蓋後牆，用以蓋合喷嘴底座而 7 200944294 形成前述之儲氣室與兩導管孔。同時，對應於底座凹陷部 位置也設置有一上蓋凹陷部。 兩隔離板係配置於喷嘴底座之底座凹陷部與喷嘴上蓋 之上蓋凹陷部間，兩隔離板間並配置有例如是螺旋彈簧之 .彈性元件，以便隔離前述之兩線材導管，並在兩隔離板間 形成儲氣室之氣流路徑。 喷嘴環係套固於喷嘴上蓋與喷嘴底座之前端，其内依 序裝置有放電室内蓋與放電室外蓋，再將外固定環鎖固於 〇 喷嘴環上，以固定放電室内蓋與放電室外蓋，並於放電室 内蓋與放電室外蓋間形成供火花放電之電弧放電室。放電 室内蓋具有可自儲氣室引入主氣流之第三進氣孔，以及可 自儲氣室引入辅助氣流之第四進氣孔，且對應於喷嘴底座 之底座通孔，設置有一内蓋通孔，以便自空壓機導入之壓 縮氣體，可以經由喷嘴底座之底座通孔，穿過放電室内蓋 之内蓋通孔，進入位於放電室内蓋與放電室外蓋間之電弧 放電室中，再經設置於放電室外蓋之出氣孔，將熔化之喷 〇 覆材料帶送吹向基材，使堆積、凝固而形成塗層或膜厚。 在一實施例中，此低溫熱熔機之搶頭的放電室内蓋鄰 近放電室外蓋之一侧，設置有圓錐形突出部，以便搭配放 電室外蓋形成狹窄之圓錐形電弧放電室。狹窄之圓錐形電 弧放電室的使用時機是，當元件的喷塗面積很小，而必須 使用直徑較小之金屬線材來喷塗時，即可更換此一型式之 放電室内蓋來使用。 在一實施例中，此低溫熱熔機之槍頭的放電室外蓋， 200944294 設置有圓錐形凹口、環繞圓錐形凹口之内環圍牆與外環圍 牆。内環圍牆頂端具有對應於放電室内蓋之第四進氣孔與 内蓋通孔之多數個缺口，以便自儲氣室引入之輔助氣流， 可以經由放電室内蓋之第四進氣孔；自空壓機導入之壓縮 , 氣體，可以經由放電室内蓋之内蓋通孔，進入放電室外蓋 , 的内環圍牆與外環圍牆間，再混合經由該些缺口進入圓錐 形凹口中。 在一實施例中，此低溫熱熔機之槍頭的噴嘴上蓋、喷 〇 嘴底座與放電室内蓋等可以選擇由例如是電木或陶瓷等絕 緣材料來製作。而放電室外蓋、喷嘴環與外固定環等則可 以選擇由例如是鋁合金、不銹鋼或青銅等硬質金屬來製作。 在一實施例中，此低溫熱熔機之槍頭更包括：固定於 喷嘴後方的鋁合金固定片，以及固定於鋁合金固定片上之 電木固定片。 在一實施例中，此低溫熱熔機之搶頭的兩線材導管係 為銅管，或亦可為非鐵之金屬管。其延伸長度較佳地係介 ❹於5公分至10公分之間，而兩線材導管間所形成之預設角 度較佳地係介於25度至35度之間。 ‘前述低溫熱熔機之槍頭可達成之功效如下： 1. 將習知之電弧熱熔機的表面加工温度，由最低攝氏 80度下降至攝氏9至40度之間，以利於3C產品之表面加 工使用。 2. 將習知之電弧熱熔機之喷塗層的結合強度，由一般 55kgf/cm2提昇至 150kgf/cm2 以上。 200944294 3.將習知之電弧熱熔機之喷塗層的孔隙率，由一般 7%〜8%下降至1%〜5%，以獲得更為細緻之喷塗層。 為讓本發明之上述和其他目的、特徵、和優點能更明 顯易懂，下文特以較佳實施例，並配合所附圖式，作詳細 .說明如下： 【實施方式】 請參考圖1與圖2所示，圖1為根據本發明較佳實施 ❹ 例之一種低溫熱熔機之槍頭的組合立體圖、圖2為圖1之 搶頭的部分分解立體圖。如圖所示，本發明所提供之低溫 熱熔機之槍頭10包括：喷嘴30、兩線材導管11與12、鋁 合金固定片13與電木固定片14。其中，鋁合金固定片13 與電木固定片14係為了能夠將此槍頭10鎖固於低溫熱熔 機之操作手把（未繪示）上，以利於操作人員操作之用。 故，組裝時，是以螺絲141來將電木固定片14與鋁合金固 定片13,依序鎖固於喷嘴30後方。 ❹ 圖中，兩線材導管11與12並各具有導線穿孔111、 121，以及分別貫穿兩線材導管11與12之管壁的進氣孔 112、122。此外，為了能夠提供導電功能，兩線材導管11 與12較佳地係為銅管，當然，其亦可為非鐵之其他各種不 同的金屬管。 請合併參考圖3之喷嘴剖面圖所示，圖中，喷嘴30具 有儲氣室51與成圓錐形之電弧放電室52。儲氣室51設置 有可由空壓機（未繪示）導入壓縮氣體之進氣孔61，以及 200944294 連通室外成一預設角度之兩導管孔53、54(請參圖5)，兩 導管孔53、54間之預設角度較佳地係介於25度至35度之 間。電弧放電室52設置有連通室外以便自空壓機導入壓縮 . 氣體之進氣孔62、連通儲氣室51以自儲氣室51引入主氣 流之進氣孔63、連通儲氣室51以自儲氣室51引入輔助氣 , 流之兩個進氣孔64 (請參圖8)、以及可將熔化之喷覆材料 帶送吹向基材之出氣孔65。 如圖所示，兩線材導管11與12係分別配置於喷嘴30 ❹ 上之兩導管孔53、54中，並自儲氣室51外延伸進入儲氣 室51内，以至鄰近電弧放電室52之位置。使用時，例如 是鋅線等金屬線材將穿設於線材導管11與12之導線穿孔 111、121中，而低溫熱熔機之驅動機構例如是氣動馬達， 則可驅動金屬線材前進，使金屬線材以前述之預設角度漸 趨靠近，並進入喷嘴30之電弧放電室52，以在電弧放電 室5 2内進行火花放電，熔化金屬線材。 此外，連通導線穿孔111、121及儲氣室51之進氣孔 ❿ 112、122，則可引入部分之儲氣室51氣流，以冷卻金屬線 材，降低金屬線材之溫度。為了提昇引入氣流冷卻金屬線 材之效果，兩線材導管11與12的延伸長度較佳地係介於 5公分至10公分之間。 請參考圖4所示，此槍頭10的喷嘴30包括：喷嘴底 座31、喷嘴上蓋32、兩隔離板33、34、例如是螺旋彈簧 之彈性元件35、喷嘴環36、放電室内蓋37、放電室外蓋 38及外固定環39。其中，喷嘴底座31、喷嘴上蓋32與放 11 200944294 電至内蓋37等’可以選擇由例如是電木或陶究等絕緣材料 來製作。而放電室外蓋38、噴嘴環36與外固定環39等， 貝j可以選擇由例如疋合金、不錄鋼或青銅等硬質金屬來 製作。 請合併參考® 5、《 6與圖7所示，喷嘴底座31具有 底面3U、頂面312、前端313與後端314。喷嘴底座31 的頂面312 §史置有位於後端314之底座後牆317、以及由 後端314向前端313漸縮而成前述預設角度之兩底座側牆 ❹315、316，兩底座侧騰315、316與底座後牆317間，則形 成喷嘴30之兩導管孔53、54，兩導管孔53、54間並設置 有供放置兩隔離板33、34之底座凹陷部318。此外，前述 可自空壓機導入壓縮氣體之進氣孔61，係設置於底座後牆 317邊並貫穿噴嘴底座31的頂面312與底面311。用以自 空壓機導入壓縮氣體至電弧放電室52之底座通孔3丨9，則 設置於噴嘴底座31的底面311與頂面312間，並連通至喷 嘴底座31之前端313，以作為進氣孔62之前段 © 為了讓喷嘴上蓋32蓋合喷嘴底座31而形成前述之儲 氣室51與兩導管孔53、54，喷嘴上蓋32對應於噴嘴底座 31之兩底座侧牆315、316與底座後牆317，分別敦置有兩 上蓋侧牆325、326與上蓋後牆327。同時，也對應於喷嘴 底座31之底座凹陷部318 ’設置有可供放置兩隔離板犯、 34之上蓋凹陷部328。當兩隔離板33、34放置於嘴嘴底座 31之底座凹陷部318與喷嘴上蓋32之上蓋凹陷部328間 時’兩隔離板33、34間也將置入彈性元件35，使兩隔離 12 200944294 板33、34維持一定之距離，除了可以隔離兩侧之線材導管 Η、12外，並可在兩隔離板33、34間形成儲氣室51之氣 流路徑。 請再參考圖4所示，當兩側之線材導管11、12、兩隔 : 離板33、34與彈性元件35等，均定位於喷嘴底座31上後， < 便可以將喷嘴上蓋32蓋合喷嘴底座31，再以螺絲71來鎖 固喷嘴上蓋32與喷嘴底座31。之後，將喷嘴環36套入喷 嘴上蓋32與喷嘴底座31之前端313,並以螺絲72鎖固後， ❹ 依序裝入放電室内蓋37與放電室外蓋38，再將外固定環 39旋入而鎖固於喷嘴環36上，藉以固定放電室内蓋37與 放電室外蓋38，並於放電室内蓋37與放電室外蓋38間形 成供火花放電之電弧放電室52。 請合併參考圖8與圖9所示，放電室内蓋37具有可自 儲氣室51引入主氣流之進氣孔63，以及可自儲氣室51引 入輔助氣流之進氣孔64。另外，對應於喷嘴底座31之底 座通孔319，也設置有一内蓋通孔379，以便自空壓機導入 ❹ 進氣孔62之壓縮氣體，可以經由喷嘴底座31之底座通孔 319，穿過放電室内蓋37之内蓋通孔379，以及放電室外 蓋38之缺口 384，進入位於放電室内蓋37與放電室外蓋 38間之電弧放電室52中，再經設置於放電室外蓋38之出 氣孔65，將溶化之喷覆材料帶送吹向基材，使堆積、凝固 而形成塗層或膜厚。 圖9中，放電室外蓋38設置有形成圓錐形電弧放電室 52之圓錐形凹口 381，且環繞圓錐形凹口 381設置有内環 13 200944294 圍牆382與外環圍牆383。内環圍牆382頂端具有分別對 應於放電室内蓋37之進氣孔64與内蓋通孔379之多數個 缺口 384，以便自儲氣室51引入之辅助氣流，可以經由放 電室内蓋37之進氣孔64;自空壓機導入進氣孔62之壓縮 、 氣體，可以經由放電室内蓋37之内蓋通孔379，一併進入 、放電室外蓋38的内環圍牆382與外環圍牆383間，再混合 經由缺口 384進入放電室外蓋38之圓錐形凹口 381中。 請參考圖10所示，其為圖4之放電室内蓋37的另一 ❹ 實施例立體圖。如圖所示，此放電室内蓋97鄰近放電室外 蓋38之一侧，設置有對應於放電室外蓋38之圓錐形凹口 381的圓錐形突出部971，用以搭配放電室外蓋38形成狹 窄之圓錐形電弧放電室。狹窄之圓錐形電弧放電室的使用 時機是，當元件的喷塗面積很小，而必須使用直徑較小之 金屬線材來喷塗時，即可將圖4之放電室内蓋37，更換為 此一型式之放電室内蓋97來使用。 雖然本發明已以較佳實施例揭露如上，然其並非用以 ❿ 限定本發明，任何熟習此技藝者，在不脫離本發明之精神 和範圍内所作之各種更動與潤飾，亦屬本發明之範圍。因 此，本發明之保護範圍當視後附之申請專利範圍所界定者 為準。 14 200944294 【圖式簡單說明】 圖1係顯雜據本發日顿佳實施例之一祕溫熱熔機 之槍頭的組合立體圖。 圖2係顯示圖1之撿項的部分分解立體圖。 圖3係顯示圖2之噴嘴的剖面圖。 圖4係顯示圖2之喷嘴的分解立體圖。 圖5係顯示圖4之噴嘴底座的立體圖。 圖6係顯示圖4之喷嘴底座的另一角度立體圖。 圖7係顯示圖4之喷嘴上蓋的立體圖。 圖8係顯示圖4之放電室内蓋的立體圖。 圖9係顯示圖4之放電室外蓋的立體圖。 圖10係顯示圖4之放電室内蓋的另一實施例立體圖。 【主要元件符號說明】 10低溫熱熔機之槍頭 11、12線材導管 111 ' 121導線穿孔 112、122、61、62、63、64 進氣孔 13銘合金固定月 14電木固定片 141 ' 71、72 螺絲 30喷嘴 31喷嘴底座 311底面 15 200944294 312頂面 313前端 314後端 315、316底座侧踏 . 317底座後牆 318底座凹陷部 319底座通孔 32喷嘴上蓋 ❹ 325、326上蓋侧牆 327上蓋後牆 328上蓋凹陷部 33、34隔離板 35彈性元件 36喷嘴環 37、97放電室内蓋 379内蓋通孔 © 38放電室外蓋 381圓錐形凹口 382内環圍牆 383外環圍牆 384 缺口 39外固定環 51儲氣室 52電弧放電室 200944294 53、54導管孔 65出氣孔 971圓錐形突出部Length, the gas storage outdoor extends into the gas storage chamber to the adjacent electricity: J position. The wire piercing of the two wire conduits is for the metal wire such as zinc wire = Ο, so that the driving mechanism can drive the metal wire so that the metal wire has no angle before. Get closer and enter the arc discharge chamber of the nozzle for fire #discharge. The communication hole perforation and the fifth air inlet of the gas storage chamber can introduce a part of the gas flow in the gas storage chamber to cool the metal wire and reduce the temperature of the metal wire. In one embodiment, the nozzle of the nozzle of the low temperature hot melt machine comprises: a nozzle base, a nozzle upper cover, two partition plates, an elastic member, a nozzle ring Ring), a discharge chamber cover, a discharge outdoor cover, and an outer fixing ring. Wherein the nozzle base has a bottom surface, a top surface, a front end and a rear end. The top surface of the nozzle ❹ base is further provided with a base rear wall at the rear end and two base side walls which are tapered from the rear end toward the front end to form the aforementioned preset angles, so that the two sides of the base wall and the rear wall of the base form the foregoing Two conduit holes are provided, and a base recess is arranged between the two conduit holes. In addition, the rear wall of the base is provided with a connecting top surface and a bottom surface, and a first air inlet hole for introducing a compressed gas from the air compressor is provided with a through hole communicating with the front end between the bottom surface and the top surface to form a part. Second intake hole. The nozzle upper cover corresponds to the two base side walls of the nozzle base and the base rear wall, and two upper cover side walls and an upper cover rear wall are respectively provided for covering the nozzle base. 7 200944294 forms the aforementioned air storage chamber and two conduit holes. At the same time, an upper cover recess is also provided corresponding to the position of the recess of the base. The two isolating plates are disposed between the recessed portion of the base of the nozzle base and the recessed portion of the upper cover of the nozzle upper cover, and an elastic element such as a coil spring is disposed between the two separating plates to isolate the two wire conduits and the two separating plates The air flow path between the gas storage chambers is formed. The nozzle ring is sleeved on the front end of the nozzle upper cover and the nozzle base, and the discharge indoor cover and the discharge outdoor cover are sequentially arranged therein, and then the outer fixing ring is locked on the 〇 nozzle ring to fix the discharge indoor cover and the discharge outdoor cover And forming an arc discharge chamber for spark discharge between the discharge chamber cover and the discharge outdoor cover. The discharge indoor cover has a third air inlet hole capable of introducing a main air flow from the air storage chamber, and a fourth air inlet hole capable of introducing an auxiliary air flow from the air storage chamber, and corresponding to the base through hole of the nozzle base, an inner cover is provided The hole, so that the compressed gas introduced from the air compressor can pass through the through hole of the nozzle base, pass through the inner cover through hole of the discharge chamber cover, enter the arc discharge chamber between the discharge chamber cover and the discharge outdoor cover, and then The venting hole is disposed on the discharge hole of the discharge outdoor cover, and the molten squeegee material is sent to the substrate to be deposited and solidified to form a coating layer or a film thickness. In one embodiment, the head chamber of the low temperature hot melt machine is adjacent to one side of the discharge outdoor cover, and is provided with a conical protrusion to form a narrow conical arc discharge chamber with the discharge outer cover. The narrow conical arc discharge chamber is used when the spray area of the component is small and the metal wire of a smaller diameter must be used for spraying, and the discharge chamber cover of this type can be replaced. In one embodiment, the discharge outdoor cover of the tip of the low temperature hot melt machine, 200944294 is provided with a conical recess, an inner ring wall surrounding the conical recess and an outer ring wall. The top end of the inner ring wall has a plurality of notches corresponding to the fourth air inlet hole and the inner cover through hole of the discharge chamber cover, so that the auxiliary air flow introduced from the air storage chamber can pass through the fourth air inlet hole of the discharge chamber cover; The compression introduced by the press can pass through the inner cover through hole of the discharge chamber cover, enter the inner wall of the discharge outdoor cover, and the outer ring wall and then mix and enter the conical recess through the notches. In one embodiment, the nozzle top cover, the nozzle base, the discharge chamber cover, and the like of the tip of the low temperature hot melt machine may be selected from an insulating material such as bakelite or ceramic. The discharge outdoor cover, the nozzle ring and the outer fixing ring can be made of a hard metal such as aluminum alloy, stainless steel or bronze. In one embodiment, the tip of the low temperature hot melt machine further comprises: an aluminum alloy fixing piece fixed to the rear of the nozzle, and a bakelite fixing piece fixed on the aluminum alloy fixing piece. In one embodiment, the two wire conduits of the low temperature hot melt machine are copper tubes or may be non-ferrous metal tubes. The extension length is preferably between 5 cm and 10 cm, and the predetermined angle formed between the two wire conduits is preferably between 25 and 35 degrees. 'The effect of the aforementioned low-temperature hot melt machine gun head can be achieved as follows: 1. The surface processing temperature of the conventional arc hot melt machine is reduced from a minimum of 80 degrees Celsius to between 9 and 40 degrees Celsius to facilitate the 3C product. Surface processing is used. 2. Increase the bonding strength of the spray layer of the conventional arc hot melt machine from 55kgf/cm2 to 150kgf/cm2. 200944294 3. The porosity of the sprayed layer of the conventional arc hot melt machine is reduced from 7% to 8% to 1% to 5% to obtain a finer spray coating. The above and other objects, features, and advantages of the present invention will become more <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; Fig. 2 is a perspective view showing a combination of a gun head of a low temperature hot melt machine according to a preferred embodiment of the present invention, and Fig. 2 is a partially exploded perspective view of the head of Fig. 1. As shown, the tip 10 of the low-temperature hot melt machine of the present invention comprises a nozzle 30, two wire conduits 11 and 12, an aluminum alloy fixing piece 13 and a bakelite fixing piece 14. Among them, the aluminum alloy fixing piece 13 and the bakelite fixing piece 14 are for locking the tip 10 to the operating handle (not shown) of the low-temperature hot melt machine for the operation of the operator. Therefore, at the time of assembly, the bakelite fixing piece 14 and the aluminum alloy fixing piece 13 are screwed 141, and are sequentially locked behind the nozzle 30. In the figure, the two wire conduits 11 and 12 each have wire through holes 111, 121, and intake holes 112, 122 which respectively penetrate the pipe walls of the two wire conduits 11 and 12. Further, in order to be able to provide a conductive function, the two wire conduits 11 and 12 are preferably copper pipes, and of course, they may be other various metal pipes other than iron. Referring to the nozzle cross-sectional view of Fig. 3, the nozzle 30 has a gas storage chamber 51 and a conical arc discharge chamber 52. The air storage chamber 51 is provided with an air inlet hole 61 into which a compressed gas can be introduced by an air compressor (not shown), and two conduit holes 53, 54 which are connected to the outside of the room at a predetermined angle (see FIG. 5), and two conduit holes 53. The preset angle of 54 is preferably between 25 degrees and 35 degrees. The arc discharge chamber 52 is provided with a communication outdoor to introduce compression from the air compressor. The gas inlet hole 62 communicates with the gas storage chamber 51 to introduce the main air flow inlet 63 from the air storage chamber 51, and communicates with the gas storage chamber 51. The gas storage chamber 51 introduces an auxiliary gas, two flow holes 64 (see Fig. 8), and a molten spray material that can be blown to the air outlet 65 of the substrate. As shown, the two wire conduits 11 and 12 are respectively disposed in the two conduit holes 53, 54 on the nozzle 30, and extend from the outside of the gas storage chamber 51 into the gas storage chamber 51 so as to be adjacent to the arc discharge chamber 52. position. In use, a metal wire such as a zinc wire will pass through the wire through holes 111, 121 of the wire conduits 11 and 12, and the driving mechanism of the low temperature hot melt machine, for example, a pneumatic motor, can drive the metal wire to advance and make the metal The wire gradually approaches at the aforementioned predetermined angle and enters the arc discharge chamber 52 of the nozzle 30 to perform spark discharge in the arc discharge chamber 52 to melt the metal wire. In addition, the connecting wire through holes 111, 121 and the air inlet holes 112, 122 of the air plenum 51 can introduce a part of the air flow in the air plenum 51 to cool the metal wire and lower the temperature of the metal wire. In order to enhance the effect of introducing the airflow to cool the metal wire, the extension length of the two wire conduits 11 and 12 is preferably between 5 cm and 10 cm. Referring to FIG. 4, the nozzle 30 of the tip 10 includes a nozzle base 31, a nozzle upper cover 32, two partition plates 33, 34, an elastic member 35 such as a coil spring, a nozzle ring 36, a discharge chamber cover 37, and a discharge. The outdoor cover 38 and the outer fixing ring 39. Here, the nozzle base 31, the nozzle upper cover 32 and the discharge 11 200944294 are electrically connected to the inner cover 37, etc., and may be selected from an insulating material such as bakelite or ceramics. Further, the discharge outdoor cover 38, the nozzle ring 36, the outer fixing ring 39, and the like can be made of a hard metal such as tantalum alloy, non-recorded steel or bronze. Please refer to the combination of the reference 5, "6 and FIG. 7, the nozzle base 31 has a bottom surface 3U, a top surface 312, a front end 313 and a rear end 314. The top surface 312 of the nozzle base 31 is provided with a base rear wall 317 at the rear end 314, and two base side walls 315 and 316 which are tapered from the rear end 314 toward the front end 313 to form the predetermined angle. Between 315 and 316 and the rear wall 317 of the base, two conduit holes 53, 54 of the nozzle 30 are formed, and a base recess 318 for placing the two partition plates 33, 34 is disposed between the two conduit holes 53, 54. Further, the intake hole 61 into which the compressed gas can be introduced from the air compressor is disposed on the side of the base rear wall 317 and penetrates the top surface 312 and the bottom surface 311 of the nozzle base 31. The base through hole 3丨9 for introducing the compressed gas from the air compressor to the arc discharge chamber 52 is disposed between the bottom surface 311 of the nozzle base 31 and the top surface 312, and communicates with the front end 313 of the nozzle base 31 to serve as The front hole of the air hole 62 is formed to cover the nozzle base 31 with the nozzle upper cover 32 to form the aforementioned air storage chamber 51 and the two conduit holes 53, 54 corresponding to the two base side walls 315, 316 and the base of the nozzle base 31. The rear wall 317 has two upper cover side walls 325, 326 and an upper cover rear wall 327, respectively. At the same time, the base recess 318' corresponding to the nozzle base 31 is provided with a cover recess 328 for placing the two spacers. When the two partition plates 33, 34 are placed between the base recessed portion 318 of the nozzle base 31 and the upper cover recess 32 of the nozzle upper cover 32, the elastic members 35 will also be placed between the two partition plates 33, 34 to separate the two. The plates 33, 34 are maintained at a distance which, in addition to being able to isolate the wire conduits 12, 12 on both sides, and may form an air flow path between the two partition plates 33, 34. Referring to FIG. 4 again, when the wire guides 11, 12 on both sides, the two partitions: the off-plates 33, 34 and the elastic member 35, etc. are all positioned on the nozzle base 31, the nozzle upper cover 32 can be covered. The nozzle base 31 is closed, and the nozzle upper cover 32 and the nozzle base 31 are locked by screws 71. Thereafter, the nozzle ring 36 is placed in the nozzle upper cover 32 and the front end 313 of the nozzle base 31, and after being locked by the screws 72, the discharge chamber cover 37 and the discharge outdoor cover 38 are sequentially loaded, and the outer fixing ring 39 is screwed in. The nozzle ring 36 is locked to fix the discharge chamber cover 37 and the discharge outdoor cover 38, and an arc discharge chamber 52 for spark discharge is formed between the discharge chamber cover 37 and the discharge outdoor cover 38. Referring to Fig. 8 and Fig. 9, the discharge chamber cover 37 has an intake port 63 through which the main air flow can be introduced from the air reservoir 51, and an intake port 64 through which the auxiliary air flow can be introduced from the air reservoir 51. In addition, an inner cover through hole 379 is also provided corresponding to the base through hole 319 of the nozzle base 31, so that the compressed gas introduced into the air inlet hole 62 from the air compressor can pass through the base through hole 319 of the nozzle base 31. The inner cover through hole 379 of the discharge chamber cover 37 and the notch 384 of the discharge outdoor cover 38 enter the arc discharge chamber 52 between the discharge chamber cover 37 and the discharge outdoor cover 38, and then pass through the air outlet provided in the discharge outdoor cover 38. 65. The sprayed material is melted and blown onto the substrate to be deposited and solidified to form a coating or a film thickness. In Fig. 9, the discharge outdoor cover 38 is provided with a conical recess 381 which forms a conical arc discharge chamber 52, and a conical recess 381 is provided with an inner ring 13 200944294 a wall 382 and an outer ring wall 383. The top end of the inner ring wall 382 has a plurality of notches 384 corresponding to the air inlet holes 64 and the inner cover through holes 379 of the discharge chamber cover 37, respectively, so that the auxiliary air flow introduced from the air storage chamber 51 can pass through the air inlet of the discharge chamber cover 37. The hole 64; the compression and gas introduced into the air inlet hole 62 from the air compressor can pass through the inner cover through hole 379 of the discharge chamber cover 37, and enter and discharge between the inner ring wall 382 and the outer ring wall 383 of the outdoor cover 38. Remixing enters the conical recess 381 of the discharge outdoor cover 38 via the notch 384. Please refer to FIG. 10, which is a perspective view of another embodiment of the discharge chamber cover 37 of FIG. As shown, the discharge chamber cover 97 is adjacent to one side of the discharge outdoor cover 38, and is provided with a conical projection 971 corresponding to the conical recess 381 of the discharge outdoor cover 38 for forming a narrow fit with the discharge outdoor cover 38. Conical arc discharge chamber. The narrow conical arc discharge chamber is used when the sprayed area of the component is small and the metal wire of a small diameter must be used for spraying, and the discharge chamber cover 37 of FIG. 4 can be replaced with this one. A type of discharge chamber cover 97 is used. While the invention has been described above in terms of the preferred embodiments of the present invention, it is not intended to limit the invention, and the various modifications and refinements of those skilled in the art without departing from the spirit and scope of the invention are also range. Therefore, the scope of the invention is defined by the scope of the appended claims. 14 200944294 [Simple description of the drawings] Fig. 1 is a perspective view showing the combination of the tips of the secret temperature hot melt machine of one of the present inventions. Figure 2 is a partially exploded perspective view showing the item of Figure 1. Figure 3 is a cross-sectional view showing the nozzle of Figure 2. Figure 4 is an exploded perspective view showing the nozzle of Figure 2. Figure 5 is a perspective view showing the nozzle base of Figure 4. Figure 6 is another perspective view showing the nozzle base of Figure 4. Figure 7 is a perspective view showing the nozzle upper cover of Figure 4. Figure 8 is a perspective view showing the discharge chamber cover of Figure 4. Figure 9 is a perspective view showing the discharge outdoor cover of Figure 4. Figure 10 is a perspective view showing another embodiment of the discharge chamber cover of Figure 4. [Main component symbol description] 10 low temperature hot melt machine gun head 11, 12 wire conduit 111 '121 wire perforation 112, 122, 61, 62, 63, 64 air intake hole 13 Ming alloy fixed month 14 bakelite fixing piece 141 '71,72 screw 30 nozzle 31 nozzle base 311 bottom surface 15 200944294 312 top surface 313 front end 314 rear end 315, 316 base side step. 317 base rear wall 318 base recessed portion 319 base through hole 32 nozzle upper cover 325 325, 326 upper cover side Wall 327 Upper cover Rear wall 328 Upper cover recess 33, 34 Isolation plate 35 Elastic element 36 Nozzle ring 37, 97 Discharge chamber cover 379 Inner cover through hole © 38 Discharge outdoor cover 381 Conical notch 382 Inner ring wall 383 Outer ring wall 384 Notch 39 outer fixing ring 51 gas storage chamber 52 arc discharge chamber 200944294 53, 54 conduit hole 65 air outlet 971 conical protrusion
1717