1304009 (1) 九、發明說明 【發明所屬之技術領域】 本發明，是有關作爲建築物壁面的凸角部分的外部裝 備材所使用的凸角柱、及對於凸角柱頂角部施加倒角加工 的裝置。 【先前技術】 # 一般，使用於建築物壁面的凸角部分的外部裝備材， 已知如第9圖所示的凸角柱A (專利文獻1等參照）。在凸 角柱A的製造中，通常，如第1〇圖a所示，使用具有表 面圖案部（未圖示）的窯業建築板1，其將切斷成適宜寬度 來製作板片1 a、1 a，傾斜（多4 5度的角度，但不限定於此 )切斷各板片的1個側邊（第10圖b)，並其使形成頂角部3 的方式的黏接接合切斷面2、2彼此而形成（第1 〇圖c)。 此時，因爲在頂角部3產生了偏離，或使用於黏接接 • 合的接合劑從頂角部超出，爲了除去其等的目的，藉由如 凸榫切削機的機械手段對於頂角部3施加倒角加工，而形 成倒角加工部4 (第1 0圖d)。使用凸榫切削機的習知的倒 角加工中，被切削的倒角加工部4，因爲是成爲寬度爲 10mm〜20mm程度的寬廣的平坦面，且色彩成爲與板片ia 的表面相異，所以使用例如專利文獻1所揭示如的裝置， 另外施加後塗裝。 使用於黏接接合的接合劑，多使用濕氣硬化型的尿烷 系或是環氧系的接合劑。但是，濕氣硬化型接合劑直到硬 -4 - (2) 1304009 化爲止需要較長時間，因爲有生産性方面的課題，所以在 短時間可發揮所需的接合效果的反應性熱融合接合劑也被 使用於凸角柱的製造（專利文獻2、3等參照）。 [專利文獻1]日本特開平1 1 - 1 88294號公報 [專利文獻2]日本特開平9-256594號公報 [專利文獻3]日本特開2003-232117號公報 • 【發明內容】 (本發明所欲解決的課題） 如前述，在習知的凸角柱中，對於頂角部使用如凸榫 切削機的的裝置進行倒角加工，使倒角加工部4成爲寬廣 的平坦面。因此，即使將其後塗裝也很醒目，且，倒角加 工部4因爲是於長度方向連續的水平面，其部分的陰影， 會成爲與表面圖案部的陰影不同。 且，爲了提高生産性的目的而使用反應性熱融合接合 # 劑作爲接合劑，會因發生於倒角加工時的切削工具之間的 摩擦熱而使反應性熱融合接合劑（軟化點普通爲80 °C〜90 °C )的表層部分溶解，切削工具會對於已軟化的接合劑的 表面部分進行切削。此極薄地被切削的切削片會附著於切 削面，如第1 1圖意示地顯示，在接合劑層P的倒角加工 部4側的端面Pc會產生微細的凹凸Pd。此凹凸Pd，在外 表，成爲倒立的狀態或是正立的狀態。其微細的凹凸Pd 會影響後塗裝塗膜面，由此，倒角加工部及表面圖案部的 陰影之間會產生不同。再軟化的反應性熱融合接合劑也會 -5- (3) 1304009 附著於切削工具側而產生問題。 本發明，是鑑於上述的狀況，其目的爲提供一種凸角 柱，是將表面圖案部爲例如與接合面交叉形成的壓花圖案 的板片，以支撐頂角部的方式黏接接合而形成；對於該凸 角柱，使形成於頂角部的倒角加工部儘可能不明顯，並且 即使爲了提高生産性而使用反應性熱融合接合劑作爲接合 劑的情況，也可防止因摩擦熱導致接合劑再軟化，阻止在 • 接合劑層的倒角加工部側的端面產生微細的凹凸，穩定被 後塗裝於倒角加工部的塗膜面，使倒角加工部不會引起異 樣感。 且，本發明的其他的目的是提供一種對於凸角柱頂角 部施加倒角加工的裝置，供製造具備上述特徵的凸角柱用 (用以解決課題的手段） • 本發明的凸角柱，是使用反應式熱融合接合劑黏接接 合至少2枚的板片，並使長度方向的側邊彼此形成頂角部 ，其特徵爲：在前述頂角部形成寬度狹窄的倒角加工部， 該倒角加工部並非在長度方向連續的水平面而是形成無規 則的凹凸之連續凹凸面，且，在前述頂角部的側邊彼此的 接合部殘存有使用於黏接接合的接合劑層’該接合劑層的 倒角加工部側的端面是沿著倒角加工部的凹凸面且爲平坦 的面。 在本發明中，構成凸角柱的板片，可以使用習知的窯 -6- (4) 1304009 業系建築板切成適宜寬度的板片。對於2枚板片的黏接接 合是使用反應式熱融合接合劑。由此，爲了短縮可獲得所 需的接合強度爲止所需的時間，來提高生産性，並不受限 於反應式熱融合接合劑，可以適宜使用習知的例如由聚異 氰酸鹽及聚酚構成的反應式熱融合接合劑（更具體的話， 反應性聚亞胺酯系熱融合接合劑）等。 在本發明的凸角柱中，在頂角部形成寬度狹窄的倒角 # 加工部，該倒角加工部，並不是由如凸榫切削機的裝置進 行倒角加工時所形成的在長度方向連續的水平面，而是成 爲不規則的凹凸連續的凹凸面。因此，形成於頂角部的倒 角加工部，若與習知的只由水平面構成的寬度較寬的倒角 加工部相比，較不醒目，可提高凸角柱的新式樣效果。且 ，可以在倒角加工部產生與形成於板片的表面圖案部的陰 影同樣的陰影。 進一步，如後述，製造本發明的凸角柱時，是在冷卻 # 狀態進行頂角部的倒角加工，使用於黏接接合的反應式熱 融合接合劑不會因與切削工具的摩擦熱而再軟化。因此， 殘存於頂角部的側邊彼此的接合部中的接合劑層的倒角加 工部側的端面（露出面），會沿著倒角加工部的前述凹凸面 ，且爲平坦的面。因爲不會如習知在接合劑層的端面（露 出面）形成微細的凹凸，所以後塗裝的塗膜面也穩定，形 成於倒角加工部的陰影不會變亂。 前述板片的表面圖案部是具有與接合面交叉的壓花圖 案較佳。更具體的話，壓花圖案是由朝相互垂直於接合面 (5) 1304009 的方向形成的複數條凸條及凹溝所形成，該 及凹溝的形狀全部相同也可以，包含不同形 凹溝也可以。後者的話從外觀新式樣的觀點 此情況，上述的壓花圖案是形成於板片的全 一部分包含其他模樣的圖案也可以。 此時，從朝交叉於接合面的方向形成的 低凹部至最高凸部爲止的高度，即從凹溝部 ^ 部的頂部爲止的距離並無特別限制，但是從 的厚度及外觀新式樣的觀點，1 5mm程度以 ，朝交叉於接合面的方向形成的壓花圖案的 部間的距離，即朝相互鄰接的凸條的頂部間 保倒角加工部的模樣的連續性的觀點的話爲 較佳爲5mm〜20mm程度。 較佳的態樣，形成於倒角加工部的前述 有連續曲面部分。藉由將倒角加工部形成這 ^ 光從傾斜方向照射時，在倒角加工部可以更 形成於構成表面圖案部的壓花圖案的陰影幾 。由此，看的人可以感到左右的板片的壓花 與倒角加工部的寬度窄的部分相輔，倒角加 ，在凸角柱就可產生無異樣感的高級感。 本發明的凸角柱，殘存於前述頂角部的 度爲約0.3〜0.5mm的範圍較佳。使用濕氣 系或是環氧系的接合劑的情況時，已塗抹的 於板片，於頂角部的接合面幾乎未形成接合 情況，各凸條 狀的凸條或是 的話較佳。在 表面也可以， 壓花圖案的最 的底部至凸條 板片的實用上 下較實際。且 相互鄰接的頂 的距離，從確 3 0mm以下， 凹凸面，是具 種連續曲面， 確實產生：與 乎同樣的陰影 圖案爲連續， 工部就不醒目 接合劑層的寬 硬化型的尿烷 接合劑會含浸 劑的層。即使 -8- (6) 1304009 . 有形成也在〇」mm以下。接合劑是使用反應式熱融合接合 劑的情況時，上述的接合劑層是形成可目視的厚度。所形 成的接合劑層的厚度是比0.3 mm薄的情況時，無法充分獲 得接合性能，比0.5mm厚的情況則會超出規格（over spec) ο 本發明的凸角柱，寬度狹窄的倒角加工部的最大橫寬 ’因也有後塗裝時的塌陷，或加工過程的缺陷的問題，所 以8mm以下較佳，更佳是2〜5mm，最佳是2〜3mm。藉 由窄縮寬度，可以更提高左右的板材的圖案模樣的連續性 〇 本發明，也揭示對於凸角柱頂角部施加倒角加工的裝 置。即，該裝置，其特徵爲，至少具備··對於使用反應式 熱融合接合劑黏接接合至少2枚的板片使長度方向的側邊 彼此形成頂角部之凸角柱進行支撐用的凸角柱支撐手段、 及設成與被支撐的凸角柱的前述頂角部交叉的旋轉切削具 # 、及可沿著形成於頂角部的凹凸面上下移動地支撐該旋轉 切削具用的旋轉切削具支撐手段、及使旋轉切削具及凸角 柱之間相對移動的移動手段、及至少冷卻由旋轉切削具使 凸角柱的頂角部被切削的領域用的冷卻手段。 在上述的裝置中，旋轉切削具，因爲是由與被支撐於 支撐手段的前述凸角柱的頂角部交叉的姿勢，且可沿著形 成於頂角部的凹凸面上下移動地被支撐，所以在凸角柱及 旋轉切削具之間產生相對移動的話，在頂角部，切削加工 (倒角加工）會沿著其凹凸面進行。因此，倒角加工部，是 -9- (7) 1304009 成爲寬度狹窄且沿著頂角部的凹凸面的形狀。 旋轉切削具高速旋轉並切削凸角柱的頂角部時，摩擦 熱會發生。但是，本發明的裝置具備冷卻手段，供冷卻藉 由旋轉切削具使凸角柱的頂角部被切削的領域，藉由冷卻 手段的冷卻效果，反應式熱融合接合劑層可回避因摩擦熱 而再軟化（溶解）。即使露出面稍再軟化，也可馬上硬化。 因此，不需切削再軟化的接合劑的表面部分，即使切削， • 也可以阻止切削片捲入旋轉切削具的事態產生。由此，殘 存於切削面即頂角部的側邊彼此的接合部之接合劑層的倒 角加工部側的端面（露出面），是與如濕氣硬化型尿烷接合 劑的習知的濕氣硬化型接合劑的情況同樣，隨時被維持在 被旋轉切削具所切削的平坦的面上。 冷卻手段，只在接近於旋轉切削具處設置1個也可以 。該情況，需要大容量的冷卻手段。爲了解決該問題，在 藉由旋轉切削具使凸角柱的頂角部被切削的領域的上流側 Φ ’進一步具備第2冷卻手段，供至少冷卻由旋轉切削具被 切削而形成的凸角柱的頂角部的領域用也可以。 且’在切削隨後’在反應式熱融合接合劑層發生再軟 化的現象雖低，但是因爲有可能發生，爲了解決該問題， 在由旋轉切削具使凸角柱的頂角部被切削的領域的下流側 ，進一步具備第3冷卻手段，供至少冷卻由旋轉切削具被 切削的凸角柱的頂角部的領域用也可以。 在本發明的裝置中，2段以上的旋轉切削具是配置於 應切削的凸角柱的長度方向也可以。藉由多段配置旋轉切 -10- (8) 1304009 削具，可以降低各旋轉切削具的負荷，就可達成作業的穩 定性、旋轉切削具的長壽化、加工面的更平坦面化等。各 段的旋轉切削具的切削刃間距，藉由形成第一段最大，以 下依序變小，就可以進行更穩定的倒角加工。又，多段配 置旋轉切削具的情況時，接近於各段的旋轉切削具，且在 其上流側及下流側設置冷卻手段較佳。又，配置2段以上 的旋轉切削具的情況時，各段的旋轉切削具的切削高度相 • 同較佳。下段側的旋轉切削具的切削高度是位於比上段側 的切削高度低的位置的話，接合劑層的切削面會再度出現 ，接合劑的除去就無法圓滑地進行。 冷卻手段，只要可以除去所發生的摩擦熱的手段的話 任意皆可，但是需要可使切削領域下降至反應式熱融合接 合劑的軟化點（多80 °C〜9(TC )以下的溫度。從裝置的容易 性及使用方便性的觀點，將空氣噴射至冷卻領域的手段較 佳，進一步具備予冷空氣的手段，可噴射冷卻空氣更佳。 春 可舉一例，利用所謂氣冷（a i r c ο ο 1)的空氣膨脹的冷卻壓風 裝置。這是可獲得溫度-7 °C〜-40 °C 、壓力 0.3Mpa〜 0_7MPa程度的範圍的冷卻加壓空氣的裝置，藉由該冷卻 加壓空氣朝切削領域吹附，就可進行冷卻，同時也可吹走 倒角加工部的切削片。 在本發明的裝置中，旋轉切削具，只要使形成於凸角 柱的頂角部的不規則的凹凸可沿著連續的凹凸面移動並進 行切削加工的話，可使用任意裝置，但是由壓縮空氣作動 的硏磨鑽頭（grinder bit)較佳，切削刃的形狀，只要是具 -11 - (9) 1304009 有扭轉角的螺線鑽頭形狀皆可以，交叉鑽頭形狀也可以。 (發明之效果） 依據本發明，對於使用反應式熱融合接合劑作爲接合 劑黏接接合2枚的板片而形成的凸角柱，可使凸角柱的頂 角部中的倒角加工部儘可能不明顯，且在倒角加工部可產 生與形成於表面壓花圖案的陰影同樣的陰影，可以獲得在 φ 倒角加工部無異樣感的凸角柱。 【實施方式.】 以下，參照圖面說明本發明。第1圖是顯示本發明的 凸角柱A的1實施例的側面圖（第1圖a)及剖面圖（第1圖 b)及要部擴大立體圖（第1圖c)，第2圖是更寫實地顯示 從上方見凸角柱A的狀態。第3圖是顯示由習知的方法進 行倒角加工的凸角柱之相當於第2圖的圖。第4圖是顯示 # 倒角加工前的凸角柱的側面圖，第5圖是說明本發明的倒 角加工法的1態樣用的側面圖。第6圖是顯示本發明的對 於凸角柱頂角部施加倒角加工的裝置的要部的立體圖，第 7圖是將第6圖所不的裝置從凸角柱的送出方向所見的圖 ，第8圖是其側面圖。 在此例中，形成凸角柱A的板片la、la，是具有由 朝與接合面交叉的方向形成的多數的凸條6及凹溝7組成 的壓花圖案，2枚的板片1 a、1 a，是使長度方向的側邊彼 此接觸而形成頂角部3，且在頂角部3使壓花圖案（凸狀6 -12- (10) 1304009 及凹溝7的返覆模樣）的凹凸相互配合地黏接接合。由此 ’在頂角部3中，依據壓花圖案的凹凸模樣形成連續的凹 凸面。在黏接接合中使用反應式熱融合接合劑P，如第1 圖c所示，在接合面中，反應式熱融合接合劑p是殘存成 爲接合劑層，其厚度是約0.3〜0.5mm程度。藉由使用反 應式熱融合接合劑P作爲接合劑，就可短縮2枚的板片1 a 、1 a穩定地接合爲止的時間，就可提高生産效率。 # 在此例中，2枚的板片1 a、1 a，爲了提高新式樣效果 ，各凸條6及凹溝7的形狀各稍不同，但是，相鄰接的凸 條彼此的頂部間的距離a(第1圖參照）平均爲1 0mm〜 1 5 mm程度，凹溝7的底部及凸條6的頂部的高度平均爲 8mm程度。雖無圖示，但是單純的返覆模樣較佳的情況中 ，返覆相同形狀的凸條及凹溝也可以。 接合住的狀態如第4圖如示，在凸角柱A的頂角部3 中，因爲會發生2枚的板片1 a、1 a之間的偏離或反應式 • 熱融合接合劑P的超出Pa，所以使用後述的裝置，沿著 頂角部3的凹凸對於頂角部3施加倒角加工。由此，如第 5圖所示，從頂角部3除去偏離的部分或反應式熱融合接 合劑P的超出Pa，就可在頂角部3中形成寬度狹窄的倒 角加工部8。而且，如第1圖c所示，接合劑P的倒角加 工部側的端面P c是沿著倒角加工部8的凹凸面且爲平坦 的面。由此，在施加於倒角加工部8的後塗裝所形成的塗 膜1 〇可無微細凹凸地穩定形成。 如第1圖所示的例中，在頂角部3中的壓花圖案的凸 -13- (11) 1304009 部領域（凸條6彼此接合的部分）及壓花圖案的凹部領域（凹 溝7彼此接合的部分）皆對於頂角部3施加倒角加工而形 成連續的曲面8a、8b，雖形成前述寬度狹窄的倒角加工部 8，但是凹部領域非必定需要施加倒角加工也可以。倒角 加工部8的橫寬度最好較狹窄，較佳是8mm程度以下。 如前述，在寬度狹窄的倒角加工部8中被施加後塗裝1 〇， 而成爲凸角柱A。 # 在本發明的凸角柱A中，倒角加工部8的整體寬度較 窄，由後塗裝所形成的塗膜1 0也穩定，且至少在頂角部3 中的壓花圖案的凸部領域因爲是連續的曲面8a，所以如第 2圖所示，倒角加工部8整體不明顯，並且與白天的曰光 照射時形成於板片1 a的表面圖案部的陽光部S及陰影部 D同樣的陽光部也會形成於倒角加工部8的連續曲面8a， 左右的板片1 a、1 a的陽光部S及陰影部D就可被看成連 續。因此，看的人會感到左右的板片1 a、1 a的壓花圖案 # 呈整體連續，就可使倒角加工部更不醒目。 又，第3圖，是顯示對於使用與第1圖、第2圖所示 的凸角柱A相同的板片1 a的凸角柱A 1，藉由習知的凸榫 切削機進行頂角部3的倒角加工的情況。這種情況，成爲 如圖示的菱形的平坦面也就是倒角加工部8(S a)…會形成 於各凸條6的頂部，後塗裝會在此部分形成塗膜，白天的 光照射到凸角柱A1時，該部分會成爲大的陽光領域Sa， 其本身不只會感到醒目而感到異樣感，且左右的板片的凸 條6的陰影部D會在該部分被中斷，模樣就會失去連續性 -14- (12) 1304009 。在上述的本發明的凸角柱A中，可消解那樣的問題。 接著參照第6圖〜第8圖說明供製造上述的凸角柱A 用的裝置B，即，使用反應式熱融合接合劑P黏接接合2 枚的板片1 a、1 a使長度方向的側邊彼此形成頂角部3而 形成的凸角柱的，如第5圖所示，前述頂角部3施加倒角 加工的裝置B的一例。 裝置B，是具備：具有送出滾子21的凸角柱支撐手 ® 段20、及設成與被凸角柱支撐手段20支撐的凸角柱A的 頂角部3交叉的旋轉切削具3 0(較佳是硏磨鑽頭）、及使旋 轉切削具3 0可沿著形成於頂角部3的凹凸呈上下移動地 支撐之旋轉切削具支撐手段40、及使旋轉切削具3 0及凸 角柱A之間相對移動之移動手段、及冷卻藉由旋轉切削具 30使凸角柱A的頂角部3被切削的領域用之冷卻手段50 〇 又，在此例中，由被設在凸角柱支撐手段20的送出 ^ 滾子2 1移動凸角柱A，使旋轉切削具3 0及凸角柱A之間 相對地移動，送出滾子2 1兼具本發明的移動手段。但是 ，固定好被支撐於凸角柱支撐手段20的凸角柱A，由適 宜的移動手段使旋轉切削具3 0移動也可以。且，圖示的 例中，凸角柱支撐手段2 0，是將複數個的送出滾子2 1呈 水平方向配列，且爲了穩定送出而將整體捲裝於平皮帶22 ，但是省略平皮帶22也可以。進一步，旋轉切削具30及 旋轉切削具支撐手段40，雖是2段配置於凸角柱A的移 動方向（長度方向），但是1段或3段以上也可以。 -15- (13) 1304009 如前述使用反應式熱融合接合劑P黏接接合2枚的板 片1 a、1 a使長度方向的側邊彼此形成頂角部3而形成的 凸角柱A，是使頂角部3露出上方地放置於送出滾子2 1 上，藉由使送出滾子21旋轉，將凸角柱A朝箭頭X方向 移送。爲了穩定凸角柱A的送出，如圖示，設置按壓滾子 2 3較佳。 旋轉切削具3 0，在此例中，是具有扭轉角α的硏磨鑽 φ 頭，螺線的鑽頭形狀也可以，交叉鑽頭形狀也可以。無論 任一種情況，扭轉角α爲45°以下，較佳是1〇°〜30°的範 圍。旋轉切削具3 0是超硬刃鑽頭較佳，如圖示2段配置 硏磨鑽頭3 0的情況時，位置於切削上流側的硏磨鑽頭3 0 的扭轉角α爲1 0°程度，位置於切削下流側的硏磨鑽頭3 0 的扭轉角α爲3 0°程度較佳。旋轉切削具3 0的直徑，是形 成可嵌入頂角部3的凹凸的凹部內且可以沿著凹部移動的 直徑最好，例如，如第1圖所示的凸角柱A，倒角加工相 φ 鄰接的凸條彼此的頂部間的距離a爲l〇mm〜15mm程度的 凸角柱A的情況時，是使用直徑3〜4 m m程度的旋轉切削 具（硏磨鑽頭）30。 2個前述旋轉切削具支撐手段40是相同結構，具有立 設於固定機框41的支柱42，對於該支柱42上下可動地安 裝可動機框43。而且，在固定機框41及可動機框43之間 ，配置有外插於支柱42的捲簧45。可動機框43，是供抵 抗捲簧45並對於旋轉切削具3 0給與切削所需要的負荷用 ，可依據實機選用適切的重量。 -16- (14) 1304009 在可動機框43中具備連接於適宜的氣壓源的空壓式 旋轉裝置46，在該空壓式旋轉裝置46的先端安裝有前述 旋轉切削具3 0並使旋轉軸心C成爲水平方向。如圖所示 ，旋轉切削具3 0的軸心線C的方向是垂直於凸角柱a的 送出方向X的方向，其切削刃，是垂直於送出凸角柱A 的頂角部3的稜線方向的狀態下被架設。 配置於固定機框41及可動機框43之間的捲簧45的 # 強度（彈簧係數），當可動機框4 3在自由的狀態下被載置於 捲簧45上時，旋轉切削具3〇的最下面的高度li，是如 第5圖所示，組裝並設成比被送來的凸角柱a的頂角部3 的稜線的凹溝7的底面的高度L2稍低位置較佳。且，如 圖示的裝置，具備2個旋轉切削具支撐手段4 0、4 0的情 況時，各旋轉切削具3 0、3 0的最下面的高度L1，皆組裝 成同等商度L 1。 冷卻手段5 0，在此例中是使用空氣作爲熱交換用流體 # 的冷卻手段，通過泵P及配管5 2從噴嘴5 1噴出需要量的 予冷空氣。利用所謂氣冷（air cool)的空氣膨脹的冷卻壓風 裝置較佳，例如，冷卻至溫度- 7°C〜-18°C、壓力0.3MPa 〜0.7MPa程度的範圍·讓加壓空氣從噴嘴5 1吹出。噴嘴 5 1，是如第8圖的符號5 1 a所示，配置在至少對於旋轉切 削具3 0切削凸角柱A的頂角部3的領域吹附空氣的位置 。如第8圖所示，對於被旋轉切削具3 0切削的領域的上 流側及下流側，也配置第2、第3噴嘴5 1更佳。在倒角加 工時，從噴嘴51(51a)吹出：可以阻止因當旋轉切削具30 -17- (15) 1304009 切削頂角部3時所產生的摩擦熱而使使用於凸角柱A的黏 接接合用的反應式熱融合接合劑P再軟化（溶解）的量的予 冷空氣。藉由吹出予冷空氣，切削工具3 0被冷卻，切削 片也被吹走。 進行倒角加工時，將壓縮空氣送出至空壓式旋轉裝置 46並給與旋轉切削具30所需的旋轉（例如，25000r pm程 度）。利用凸角柱支撐手段20送入凸角柱A的話，各可動 鲁機框43會從捲簧45受到向上的力量，2個旋轉切削具30 、3 0，可分別獨立動作，而容易朝上方移動，順著被送來 的凸角柱A的頂角部3的稜線所形成的凹凸面上下動。藉 此，旋轉切削具3 0，是劃出形成於頂角部3的稜線的凹凸 的方式進行倒角加工。由此，超出的接合劑Pa被切削除 ，並且形成寬度狹窄的倒角加工面8。 在其過程中，因爲隨時從冷卻手段5 0的噴嘴5 1噴射 予冷空氣，來冷卻被切削的領域及其前後的領域’所以不 φ 會因摩擦熱反應式熱融合接合劑P而再軟化，反應式熱融 合接合劑P不會附著捲附於旋轉切削具3 0。由此，如前 述及第1圖c所示’反應式熱融合接合劑P露出於倒角加 工部8側的端面p c ’是沿著倒角加工部8的凹凸面且爲平 坦的面。 又，在圖示的例中’雖在固定機框4 1及可動機框43 之間配置捲簧4 5調整旋轉切削具3 0作用於凸角柱A的頂 角部3的向下的負荷1 ’但是藉由適宜調整可動機框43的 重量，即使省略捲簧45 ’也可以進行所期的倒角加工。 -18- (16) 1304009 【圖式簡單說明】 [第1圖]顯示本發明的凸角柱的1實施例的側面圖（第 1圖a)、及沿著第i圖a的b-b線的剖面圖（第1圖b)及要 部的擴大立體圖（第1圖c)。 [第2圖]將從凸角柱上方所見的狀態以更寫實地顯示 的圖。 [第3圖]顯示由習知的製造方法進行倒角加工的凸角 φ 柱之相當於第2圖的圖。 [第4圖]顯示倒角加工前的凸角柱的側面圖。 [第5圖]說明本發明的倒角加工法的1態樣用的側面 圖。 [第6圖]顯示對於本發明的凸角柱頂角部施加倒角加 工的裝置的要部立體圖。 [第7圖]對於第6圖所示的裝置從凸角柱的送出方向 所見的圖。 φ [第8圖]如第6圖所示的裝置的槪略側面圖。 [第9圖]顯示習知的凸角柱的一例的圖。 [弟1 0圖]供說明凸角柱的製作方法的一例用的圖。 [第11圖]顯示將反應式熱融合接合劑作爲接合劑使用 凸角柱的倒角加工部的意示圖。 【主要元件符號說明】 A :凸角柱 a :距離 -19- (17) 1304009 A1 :凸角柱 B :對於凸角柱頂角部施加倒角加工的裝置 C :旋轉軸心 D :陰影部 L 2 .筒度 L1 :高度 P :接合劑 φ P a :接合劑 Pc :端面 Pd :凹凸 S :陽光部 5 a :陽光領域 1 :窯業建築板 1 a :板片 2 :切斷面 • 3 :頂角部 4 :倒角加工部 6 :凸條 7 :凹溝 8 :倒角加工部 8 a ·曲面 8b :曲面 1 〇 :塗膜 20 :凸角柱支撐手段 20- 1304009 (18) 2 1 :送出滾子 22 :平皮帶 23 :按壓滾子 30 :旋轉切削具（硏磨鑽頭） 40 :旋轉切削具支撐手段 4 1 :固定機框 4 2 :支柱 φ 43 :可動機框 4 5 :捲簧 46 :旋轉裝置 5 0 :冷卻手段 5 1 :噴嘴 5 2 :配管1304009 (1) EMBODIMENT OF THE INVENTION [Technical Field] The present invention relates to a gusset column used for an external equipment member as a lobed portion of a wall surface of a building, and a chamfering process for the apex angle portion of the gusset column Device. [Prior Art] # Generally, the external equipment used for the convex portion of the wall surface of the building is known as a gusset column A as shown in Fig. 9 (refer to Patent Document 1 and the like). In the manufacture of the gusset column A, generally, as shown in Fig. 1A, a kiln building panel 1 having a surface pattern portion (not shown) which is cut into a suitable width to produce a sheet 1 a, 1 is used. a, inclined (an angle of 45 degrees, but not limited thereto) cuts one side of each sheet (Fig. 10b), and cuts the bonding joint so that the corner portion 3 is formed The faces 2 and 2 are formed with each other (Fig. 1). At this time, since the deviation occurs in the apex portion 3, or the bonding agent used for the bonding is extended from the apex portion, for the purpose of removing it, by the mechanical means such as the embossing machine for the apex angle The chamfering process is applied to the portion 3 to form the chamfered portion 4 (Fig. 10D). In the conventional chamfering process using the tenon cutting machine, the chamfered portion 4 to be cut is a wide flat surface having a width of about 10 mm to 20 mm, and the color is different from the surface of the sheet ia. Therefore, for example, a device as disclosed in Patent Document 1 is used, and a post-coating is additionally applied. A moisture-curable urethane-based or epoxy-based adhesive is often used as the bonding agent for adhesion bonding. However, the moisture-curing type bonding agent takes a long time until the hard-4 - (2) 1304009 is formed, and since it has a problem in productivity, the reactive heat-fusion bonding agent which exhibits a desired bonding effect in a short time can be used. It is also used for the manufacture of a gusset column (refer to Patent Documents 2 and 3, etc.). [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei 9-256594 (Patent Document 3) JP-A-2003-232117 Problem to be Solved As described above, in the conventional gusset column, chamfering is performed on the apex angle portion using a device such as a tenon cutting machine, and the chamfered portion 4 is formed into a wide flat surface. Therefore, even if it is painted rearward, the chamfering work portion 4 is a horizontal plane continuous in the longitudinal direction, and the partial shadow thereof is different from the shadow of the surface pattern portion. Further, in order to improve the productivity, the reactive heat fusion bonding agent is used as the bonding agent, and the reactive heat fusion bonding agent (the softening point is generally caused by the frictional heat generated between the cutting tools during the chamfering process) The surface layer portion of 80 ° C to 90 ° C is dissolved, and the cutting tool cuts the surface portion of the softened cement. The extremely thinly cut cutting piece adheres to the cutting surface, and as shown in Fig. 1, the fine unevenness Pd is generated on the end surface Pc of the bonding layer P on the chamfered portion 4 side. This unevenness Pd is in an inverted state or an erect state on the outer surface. The fine unevenness Pd affects the post-coating film surface, and thus the difference between the shadows of the chamfered portion and the surface pattern portion is different. The resoftened reactive heat fusion bonding agent also causes problems when -5- (3) 1304009 adheres to the cutting tool side. The present invention has been made in view of the above circumstances, and an object thereof is to provide a gusset column which is formed by bonding a surface pattern portion to, for example, an embossed pattern formed by intersecting a joint surface, and supporting the apex portion so as to support the apex portion; With respect to the gusset column, the chamfered portion formed at the apex angle portion is as unobtrusive as possible, and even if a reactive heat fusion bonding agent is used as a bonding agent for the purpose of improving productivity, the bonding agent due to frictional heat can be prevented. The softening is further prevented to cause fine unevenness on the end surface of the side of the chamfered portion of the adhesive layer, and the coating film surface to be post-coated on the chamfered portion is stably applied, so that the chamfered portion does not cause a strange feeling. Further, another object of the present invention is to provide an apparatus for applying a chamfering process to a corner portion of a gusset column for manufacturing a gusset column having the above features (a means for solving the problem). The gusset column of the present invention is used. The reactive heat fusion bonding agent bonds and joins at least two sheets, and forms side edges in the longitudinal direction with each other to form a vertex portion, wherein a chamfered portion having a narrow width is formed at the corner portion, the chamfering The processed portion is not a continuous horizontal surface which is continuous in the longitudinal direction but a continuous uneven surface in which irregular irregularities are formed, and an adhesive layer used for adhesive bonding remains in the joint portion between the side edges of the apex portion. The end surface on the side of the chamfered portion of the layer is a flat surface along the uneven surface of the chamfered portion. In the present invention, the sheets constituting the gussets can be cut into sheets of a suitable width using a conventional kiln-6-(4) 1304009 industrial building board. For the bonding of the two sheets, a reactive heat fusion bonding agent is used. Therefore, in order to shorten the time required for obtaining the required joint strength, the productivity is improved, and it is not limited to the reactive heat fusion bonding agent, and conventionally used, for example, polyisocyanate and poly A reactive heat fusion bonding agent composed of a phenol (more specifically, a reactive polyurethane-based heat fusion bonding agent) or the like. In the gusset column of the present invention, a chamfered portion having a narrow width is formed in the apex portion, and the chamfered portion is not continuous in the longitudinal direction formed by chamfering by a device such as a burr cutting machine. The horizontal plane is a continuous concave and convex surface that becomes irregular. Therefore, the chamfered portion formed in the apex portion is less conspicuous than the conventional chamfered portion having a wide width composed only of a horizontal surface, and the new style effect of the gusset column can be improved. Further, the same shading as that of the shadow formed on the surface pattern portion of the sheet can be generated in the chamfered portion. Further, as will be described later, when the gusset column of the present invention is produced, the chamfering process of the apex angle portion is performed in the cooling # state, and the reactive heat fusion bonding agent used for the adhesion bonding is not caused by the frictional heat with the cutting tool. soften. Therefore, the end surface (exposed surface) on the chamfering processing side of the bonding agent layer in the joint portion between the side edges of the apex portion is formed along the uneven surface of the chamfered portion and is a flat surface. Since the fine unevenness is not formed on the end surface (the exposed surface) of the bonding layer as is conventionally known, the coating film surface of the post-coating is also stabilized, and the shadow formed in the chamfered portion is not disturbed. It is preferable that the surface pattern portion of the sheet has an embossed pattern intersecting the joint surface. More specifically, the embossed pattern is formed by a plurality of ridges and grooves formed in a direction perpendicular to the joint surface (5) 1304009, and the shapes of the grooves are all the same, and the grooves are also included. can. In the latter case, the embossing pattern described above may be formed in a pattern in which all of the slabs include other patterns. In this case, the height from the low concave portion to the highest convex portion formed in the direction intersecting the joint surface, that is, the distance from the top of the groove portion is not particularly limited, but from the viewpoint of the thickness and the appearance of the new style, It is preferable that the distance between the portions of the embossed pattern formed in the direction intersecting the joint surface, that is, the continuity of the pattern of the chamfered portion between the tops of the mutually adjacent ridges is preferably about 1 mm. 5mm~20mm degree. Preferably, the aforementioned continuous curved surface portion is formed in the chamfered portion. When the chamfered portion is formed to be irradiated from the oblique direction, the chamfered portion can be more formed in the shadow of the embossed pattern constituting the surface pattern portion. Therefore, the person who is looking can feel that the embossing of the left and right plates is complementary to the narrow portion of the chamfered portion, and the chamfering is added, and a high-grade feeling without a strange feeling can be produced in the gusset column. The lobes of the present invention preferably have a degree of remaining at the apex angle of about 0.3 to 0.5 mm. In the case of using a moisture-based or epoxy-based bonding agent, the bonded sheet on the apex portion is hardly bonded to the sheet, and it is preferable that each of the rib-shaped ribs is used. On the surface, the bottom of the embossed pattern to the practicality of the rib sheet is practical. And the distance between the tops adjacent to each other is from 3 to 30 mm, and the concave-convex surface is a continuous curved surface. It does produce a wide-hardening type of urethane that is not conspicuous to the bonding layer. The bonding agent will be a layer of impregnating agent. Even -8- (6) 1304009 . The formation is also below 〇 mm. When the bonding agent is a reactive heat fusion bonding agent, the above-mentioned bonding agent layer is formed to have a visible thickness. When the thickness of the formed bonding agent layer is thinner than 0.3 mm, the bonding performance cannot be sufficiently obtained, and if it is thicker than 0.5 mm, the over spec is exceeded. ο The horn column of the present invention has a narrow width chamfering process. The maximum lateral width of the part is preferably 8 mm or less, more preferably 2 to 5 mm, and most preferably 2 to 3 mm, because of the problem of collapse during post-coating or defects in the processing. By narrowing the width, the continuity of the pattern of the left and right sheets can be further improved. 〇 The present invention also discloses an apparatus for applying chamfering to the corners of the gussets. In other words, the apparatus includes at least a gusset column for supporting a gusset column in which at least two sheets are joined by a reactive heat fusion bonding agent to form a gusset portion in a longitudinal direction. a support means, a rotary cutter # which is formed to intersect the apex portion of the supported gusset column, and a rotary cutter support for supporting the rotary cutter along a concave-convex surface formed on the apex portion The means and the means for moving the relative movement between the rotary cutting tool and the gusset column, and the cooling means for cooling at least the region where the apex portion of the gusset column is cut by the rotary cutting tool. In the above-described apparatus, the rotary cutting tool is supported by the apex portion of the gusset column supported by the supporting means, and is supported to move downward along the uneven surface formed on the apex angle portion. When a relative movement occurs between the corner post and the rotary cutting tool, the cutting process (chamfering) is performed along the uneven surface at the top corner portion. Therefore, the chamfered portion is a shape in which the -9-(7) 1304009 has a narrow width and an uneven surface along the apex portion. Friction heat occurs when the rotary cutter rotates at a high speed and cuts the top corner of the lobes. However, the apparatus of the present invention is provided with a cooling means for cooling the region in which the corner portion of the gusset is cut by the rotary cutter, and the reactive heat fusion bonding layer can avoid the frictional heat by the cooling effect of the cooling means. Soften (dissolve) again. Even if the exposed surface is slightly softened, it can be hardened immediately. Therefore, it is possible to prevent the occurrence of a situation in which the cutting piece is caught in the rotary cutting tool, even if it is cut, without cutting the surface portion of the softening bonding agent. Therefore, the end surface (exposed surface) on the chamfered portion side of the bonding layer of the bonding layer remaining on the joint portion between the side edges of the apex portion, which is the cutting surface, is a conventional one such as a moisture-curable urethane bonding agent. In the case of the moisture-curing type bonding agent, it is maintained at a flat surface cut by the rotary cutting tool at any time. The cooling means can be set only one close to the rotary cutting tool. In this case, a large-capacity cooling means is required. In order to solve this problem, the upstream side Φ ' of the field in which the corner portion of the lobe is cut by the rotary cutter further includes a second cooling means for cooling at least the top of the lobe column formed by the cutting of the rotary cutter. The field of the corner can also be used. And the phenomenon of 're-softening in the reactive heat-bonding adhesive layer' after the cutting is low, but since it is possible to occur, in order to solve the problem, in the field where the apex portion of the gusset is cut by the rotary cutting tool The downstream side may further include a third cooling means for cooling at least the top corner portion of the gusset column to be cut by the rotary cutter. In the apparatus of the present invention, the two or more rotating cutting tools may be disposed in the longitudinal direction of the gusset to be cut. By rotating the -10- (8) 1304009 tool in multiple stages, the load on each rotating tool can be reduced, and the stability of the work, the longevity of the rotating tool, and the flatter surface of the machined surface can be achieved. The cutting edge pitch of each segment of the rotary cutting tool can be more stably chamfered by forming the first segment to the maximum and then decreasing the order. Further, in the case where the rotary cutting tool is arranged in a plurality of stages, it is preferable to provide a cooling means on each of the upstream side and the downstream side in the case of the rotary cutting tool of each stage. Further, when two or more rotating cutting tools are arranged, the cutting height of each of the rotating cutting tools is preferably the same. When the cutting height of the rotary cutting tool on the lower stage side is lower than the cutting height of the upper stage side, the cutting surface of the bonding agent layer reappears, and the removal of the bonding agent cannot be smoothly performed. The cooling means may be any one as long as it can remove the frictional heat generated, but it is necessary to lower the cutting area to the softening point of the reactive heat fusion bonding agent (temperatures of 80 ° C to 9 (TC ) or less. From the viewpoint of easiness of the device and ease of use, a means for injecting air into the cooling field is preferred, and a means for pre-cooling the air is provided, and it is preferable to spray the cooling air. For example, spring is called air cooling (airc ο ο 1) a cooling air-cooling device for air expansion. This is a device for cooling and pressurizing air in a range of -7 ° C to -40 ° C and a pressure of 0.3 Mpa to 0_7 MPa, by which the pressurized air is cut toward the cutting air. When the field is blown, the cooling can be performed, and the cutting piece of the chamfering processing portion can also be blown away. In the device of the present invention, the rotating cutting tool can be made as long as the irregular concave and convex portions formed at the corner portion of the gusset column can be Any device can be used to move the continuous concave-convex surface and perform cutting. However, the grinder bit is preferably operated by compressed air, and the shape of the cutting edge is only -11 - (9) 1304009 The shape of the spiral drill having a twist angle may be any, and the shape of the cross drill may be used. (Effect of the Invention) According to the present invention, two bonded adhesive joints are used as a bonding agent using a reactive heat fusion bonding agent. The gusset formed by the slab can make the chamfered portion in the apex portion of the gusset column as unobtrusive as possible, and the chamfering portion can generate the same shadow as the shadow formed on the surface embossed pattern, and can be obtained. The present invention will be described below with reference to the drawings. Fig. 1 is a side view showing an embodiment of the lobed column A of the present invention (Fig. 1a) And the cross-sectional view (Fig. 1b) and the enlarged part of the main part (Fig. 1c), and Fig. 2 shows the state in which the lobe column A is seen from above. The third figure shows the conventional method. The chamfered lobed column corresponds to the figure of Fig. 2. Fig. 4 is a side view showing the gusset column before the chamfering process, and Fig. 5 is a view showing the one aspect of the chamfering method of the present invention. Side view. Fig. 6 is a view showing the apex angle of the gusset column of the present invention A perspective view of a main part of the apparatus for chamfering, and Fig. 7 is a view of the apparatus shown in Fig. 6 from the direction in which the horn is fed, and Fig. 8 is a side view thereof. In this example, a gusset is formed. The sheets la and la of A are embossed patterns having a plurality of ridges 6 and grooves 7 formed in a direction crossing the joint surface, and the two sheets 1 a and 1 a are lengthwise directions. The side edges are in contact with each other to form the apex portion 3, and the embossing pattern (the convex shape of the convex shape 6-12-(10) 1304009 and the return pattern of the groove 7) is adhesively bonded to each other at the corner portion 3. Thus, in the apex portion 3, a continuous uneven surface is formed in accordance with the uneven pattern of the embossed pattern. The reactive heat fusion bonding agent P is used in the bonding, as shown in Fig. 1c, in the joint surface The reactive heat fusion bonding agent p remains as a bonding agent layer and has a thickness of about 0.3 to 0.5 mm. By using the reactive heat fusion bonding agent P as a bonding agent, the time until the two sheets 1 a and 1 a are shortened can be shortened, and the production efficiency can be improved. # In this example, two sheets 1 a, 1 a, in order to improve the new style effect, the shape of each of the ribs 6 and the grooves 7 are slightly different, but between the tops of the adjacent ridges The distance a (reference in Fig. 1) is about 10 mm to 15 mm on average, and the height of the bottom of the groove 7 and the top of the ridge 6 is about 8 mm on average. Although not shown, in the case where the simple returning pattern is preferable, the ridges and the grooves of the same shape may be returned. The state of the joint is as shown in Fig. 4, in the apex portion 3 of the gusset A, because the deviation between the two sheets 1a, 1a or the reaction type of the thermal fusion bonding agent P occurs. Since Pa is used, chamfering is applied to the vertex portion 3 along the unevenness of the corner portion 3 by using a device to be described later. As a result, as shown in Fig. 5, the portion of the offset from the apex portion 3 or the excess Pa of the reactive heat fusion bonding agent P can form the chamfered portion 8 having a narrow width in the apex portion 3. Further, as shown in Fig. 1c, the end surface Pc on the chamfering processing portion side of the bonding agent P is a flat surface along the uneven surface of the chamfered portion 8. Thereby, the coating film 1 formed by the post-coating applied to the chamfered portion 8 can be stably formed without fine unevenness. In the example shown in Fig. 1, the embossed pattern of the embossed pattern in the apex portion 3 is -13- (11) 1304009 (the portion where the ridges 6 are joined to each other) and the concave portion of the embossed pattern (groove) The portions 7 joined to each other are chamfered to form the continuous curved surfaces 8a and 8b, and the chamfered portion 8 having the narrow width is formed. However, the recessed portion may not necessarily be subjected to chamfering. The lateral width of the chamfered portion 8 is preferably narrow, preferably about 8 mm or less. As described above, the post-coating 1 〇 is applied to the chamfered portion 8 having a narrow width to form the gusset column A. # In the gusset column A of the present invention, the entire width of the chamfered portion 8 is narrow, and the coating film 10 formed by the post-coating is also stable, and at least the convex portion of the embossed pattern in the apex portion 3 Since the field is a continuous curved surface 8a, as shown in Fig. 2, the entire chamfered portion 8 is not conspicuous, and is formed in the sunlight portion S and the shadow portion of the surface pattern portion of the sheet 1a at the time of daytime sunlight irradiation. The same sun portion of D is also formed on the continuous curved surface 8a of the chamfered portion 8, and the sun portion S and the shade portion D of the left and right sheets 1a, 1a can be regarded as continuous. Therefore, the person who is looking will feel that the embossed pattern # of the left and right sheets 1 a, 1 a is continuous, and the chamfered portion is made less conspicuous. Further, in the third drawing, the apex portion A 1 using the same plate piece 1 a as the gusset column A shown in Figs. 1 and 2 is shown, and the apex portion 3 is performed by a conventional embossing machine. The case of chamfering. In this case, a flat surface of a diamond shape as shown in the figure, that is, a chamfered portion 8 (S a), is formed on the top of each of the ridges 6, and a post-coating layer forms a coating film in this portion, and daytime light irradiation is performed. When it reaches the lobed column A1, this part becomes a large sunlight field Sa, which itself does not only feel conspicuous and feels strange, and the shadow D of the ribs 6 of the left and right plates is interrupted in this part, and the appearance will be Loss of continuity -14 (12) 1304009. In the above-described gusset column A of the present invention, such a problem can be solved. Next, a device B for manufacturing the above-described gusset column A will be described with reference to FIGS. 6 to 8 in which the two sheets 1a and 1a are bonded and joined by the reactive heat fusion bonding agent P to the side in the longitudinal direction. As shown in Fig. 5, as shown in Fig. 5, an example of the apparatus B to which the apex angle portion 3 is subjected to chamfering is shown as the gusset column formed by forming the apex portion 3 therebetween. The device B is provided with a gusset column support hand 20 having a feed roller 21 and a rotary cutter 30 which is provided to intersect with the apex portion 3 of the gusset A supported by the gusset support means 20. It is a honing drill), and a rotary cutter supporting means 40 for supporting the rotary cutting tool 30 to move up and down along the unevenness formed in the apex portion 3, and between the rotary cutting tool 30 and the gusset A The moving means for relatively moving, and the cooling means 50 for cooling the region in which the corner portion 3 of the corner post A is cut by the rotary cutter 30, in this example, is provided by the lobe support means 20 The feeding roller 2 1 moves the lobe column A to relatively move the rotary cutting tool 30 and the lobe column A, and the feeding roller 2 1 also has the moving means of the present invention. However, the lobe column A supported by the lobe support means 20 is fixed, and the rotary cutter 30 may be moved by an appropriate moving means. In the example shown in the figure, the gusset column supporting means 20 is arranged in a horizontal direction in a plurality of the feeding rollers 21, and is wound around the flat belt 22 for stable feeding, but the flat belt 22 is omitted. can. Further, the rotary cutter 30 and the rotary cutter supporting means 40 may be disposed in the moving direction (longitudinal direction) of the gusset column A in two stages, but may be one stage or three stages or more. -15- (13) 1304009 As described above, the rib column A formed by bonding the two sheets 1 a and 1 a with the reactive heat fusion bonding agent P so that the side edges in the longitudinal direction form the apex portion 3 is The top corner portion 3 is placed above the feed roller 2 1 in an upward direction, and the feed roller 21 is rotated to transfer the corner post A in the direction of the arrow X. In order to stabilize the delivery of the lobe A, as shown, it is preferable to provide the pressing roller 2 3 . The rotary cutter 30, in this example, is a honing drill φ head having a torsion angle α, and the shape of the spiral drill may be a cross drill shape. In either case, the twist angle α is 45 or less, preferably 1 〇 to 30 °. The rotary cutting tool 30 is preferably a super-hardened drill bit. When the boring bit 30 is arranged in the second stage of the drawing, the torsion angle α of the honing bit 30 at the upstream side of the cutting is about 10°. It is preferable that the torsion angle α of the honing drill bit 30 on the downstream side of the cutting is 30°. The diameter of the rotary cutting tool 30 is preferably a diameter that forms a concave portion that can be fitted into the uneven portion of the apex portion 3 and can move along the concave portion. For example, the lobed column A as shown in Fig. 1 is chamfered. When the distance a between the adjacent ridges is a lobed column A of about 10 mm to 15 mm, a rotary cutter (honing bit) 30 having a diameter of about 3 to 4 mm is used. The two rotary cutter supporting means 40 have the same configuration, and have a stay 42 that is erected on the fixed frame 41, and the movable frame 43 is movably mounted to the support 42 up and down. Further, a coil spring 45 that is externally inserted into the stay 42 is disposed between the fixed frame 41 and the movable frame 43. The engine frame 43 is for the roller spring 45 and for the load required for cutting the rotary cutter 30, and the appropriate weight can be selected according to the actual machine. -16- (14) 1304009 The movable frame 43 is provided with a pneumatic rotary device 46 connected to a suitable air pressure source, and the rotary cutter 30 is attached to the tip end of the pneumatic rotary device 46 to rotate the shaft Heart C becomes horizontal. As shown in the drawing, the direction of the axis C of the rotary cutter 30 is perpendicular to the direction of the direction X of the lobe a, and the cutting edge is perpendicular to the ridgeline direction of the apex portion 3 of the delivery lobe A. It is erected in the state. The #strength (spring coefficient) of the coil spring 45 disposed between the fixed frame 41 and the movable frame 43 is rotated when the movable frame 43 is placed on the coil spring 45 in a free state. The lowermost height li of the crucible is preferably set to be slightly lower than the height L2 of the bottom surface of the groove 7 of the ridge line of the apex portion 3 of the raised corner post a as shown in Fig. 5. Further, when the apparatus shown in the figure is provided with two rotary cutter supporting means 40 and 40, the lowermost height L1 of each of the rotary cutting tools 30 and 30 is assembled to the equivalent quotient L1. The cooling means 50, in this example, uses air as a cooling means for the heat exchange fluid #, and the required amount of pre-cooled air is discharged from the nozzle 51 by the pump P and the pipe 52. It is preferable to use a so-called air-cooled air-cooled cooling air-cooling device, for example, to a temperature of -7 ° C to -18 ° C, a pressure of 0.3 MPa to 0.7 MPa, and a pressurized air from the nozzle. 5 1 blows out. The nozzle 5 1, as shown by the symbol 5 1 a of Fig. 8, is disposed at a position where air is blown to at least the region of the vertex portion 3 of the rotary cutting tool 30 cutting the corner post A. As shown in Fig. 8, it is preferable to arrange the second and third nozzles 5 1 on the upstream side and the downstream side of the field to be cut by the rotary cutter 30. At the time of chamfering, blowing from the nozzle 51 (51a): the adhesion to the gusset A can be prevented by the frictional heat generated when the cutting tool 30 -17-(15) 1304009 cuts the apex portion 3 The amount of pre-cooled air in which the reactive heat fusion bonding agent P for bonding is softened (dissolved). By blowing out the pre-cooled air, the cutting tool 30 is cooled and the cutting blades are blown away. When the chamfering process is performed, the compressed air is sent to the air compressor type rotating device 46 and the rotation required for the rotary cutting tool 30 is given (e.g., 25,000 rpm). When the gusset column A is fed into the gusset column A, the movable slabs 43 receive upward force from the coil spring 45, and the two rotary cutters 30 and 30 can operate independently and move upwards easily. The uneven surface formed by the ridge line of the corner portion 3 of the raised corner post A is moved downward. Thereby, the rotary cutting tool 30 is chamfered so that the unevenness of the ridge line formed in the corner portion 3 is drawn. Thereby, the excess bonding agent Pa is cut away, and a chamfered working surface 8 having a narrow width is formed. In the process, since the cold air is sprayed from the nozzle 51 of the cooling means 50 at any time to cool the field to be cut and the fields before and after it, the φ will be softened again by the frictional heat reaction type heat fusion bonding agent P. The reactive heat fusion bonding agent P does not adhere to the rotary cutting tool 30. As a result, the end surface p c ' of the reactive heat fusion bonding agent P exposed on the side of the chamfering processing portion 8 is a flat surface along the uneven surface of the chamfered portion 8 as described above and shown in Fig. 1c. Further, in the illustrated example, the coil spring 45 is disposed between the fixed frame 4 1 and the movable frame 43 to adjust the downward load 1 of the rotary cutting tool 30 acting on the corner portion 3 of the lobe A. 'But by appropriately adjusting the weight of the movable frame 43, the chamfering process can be performed even if the coil spring 45' is omitted. -18- (16) 1304009 [Brief Description of the Drawings] [Fig. 1] A side view (Fig. 1a) showing an embodiment of a gusset column of the present invention, and a section along the bb line of the i-th diagram a Figure (Fig. 1b) and an enlarged perspective view of the main part (Fig. 1c). [Fig. 2] A diagram that is more realistically displayed from the state seen above the lobes. [Fig. 3] A view corresponding to Fig. 2 showing a lobe φ column which is chamfered by a conventional manufacturing method. [Fig. 4] A side view showing a gusset column before chamfering. [Fig. 5] A side view for explaining one aspect of the chamfering method of the present invention. [Fig. 6] A perspective view of an essential part showing a device for applying chamfering to the corner portion of the gusset column of the present invention. [Fig. 7] A view of the apparatus shown in Fig. 6 as seen from the direction in which the gussets are fed. φ [Fig. 8] A schematic side view of the apparatus as shown in Fig. 6. [Fig. 9] A view showing an example of a conventional lobed column. [Picture 10] A diagram for explaining an example of a method of manufacturing a gusset. [Fig. 11] A view showing a chamfered portion of a gusset column using a reactive heat fusion bonding agent as a bonding agent. [Description of main component symbols] A: lobed column a: distance -19- (17) 1304009 A1: lobed column B: device for chamfering the corner portion of the lobed column C: axis of rotation D: shadow portion L 2 . Tube length L1: Height P: Bonding agent φ P a : Bonding agent Pc : End surface Pd : Concavity and convexity S : Sunlight part 5 a : Sunlight field 1: Kiln building board 1 a : Plate 2 : Cut surface • 3 : Head angle Part 4: chamfering processing section 6: rib 7 : groove 8 : chamfering processing section 8 a · curved surface 8b : curved surface 1 涂: coating film 20 : gusset column supporting means 20 - 1304009 (18) 2 1 : feeding roll Sub 22: flat belt 23: pressing roller 30: rotary cutter (honing drill) 40: rotary cutter supporting means 4 1 : fixed frame 4 2 : support φ 43 : movable frame 4 5 : coil spring 46 : Rotating device 50: cooling means 5 1 : nozzle 5 2 : piping