201139155 六、發明說明： 【發明所屬之技術領域】 本發明提及把刮板下端緣相對於印刷台面上面的平行 以及高度調整到基準位置即調整到所謂的零點位置的，網 板印刷機中的刮板平行調整裝置及刮板平行調整方法。 【先前技術】 在網板印刷機中，爲了確保精密的印刷處理，必須使 刮板下端緣與印刷台上面平行。而且，由於刮板隨著印刷 處理的持續進行而發生磨耗，所以需要更換刮板，在這個 時候要進行刮板的平行調整。 就刮板平行調整裝置來說，以往已知在專利文獻1中 記載的網板印刷機中的刮板平行調整裝置》該刮板平行調 整裝置不使用檢測刮板下端緣的特別的檢測裝置，例如光 學感測器，而是把使刮板升降的步進馬達兼用作檢測裝置 。該刮板平行調整裝置，首先透過電流調整量來設定步進 馬達的最大負荷。而且，刮板平行調整裝置中，使刮板下 降、刮板與印刷台壓接並超過最大負荷時，從步進馬達控 制驅動器輸出警告信號。基於該輸出信號使刮板的下降停 止，藉此把刮板調節到零點位置。藉此刮板平行調整裝置 ，不須設置用來檢測刮板的下端緣的裝置，因此可以用簡 單的構造進行刮板的平行調整。 而且，已知專利文獻2記載的網板印刷機中的刮板平 行調整裝置。該刮板平行調整裝置由與設置在印刷台上的 -5- 201139155 流體缸的杆連接的檢測移動板、與流體缸相鄰設置的位置 檢測感測器、和設置在檢測移動板上的承接板構成用來檢 測刮板的平行度的平行度檢測手段。而且，該平行度檢測 機構於刮板的長邊方向設置在兩個部位。該刮板平行調整 裝置中，刮板下降而推壓承接板，兩個位置檢測感測器同 時檢測到下降位置檢測擋塊時，使刮板的下降停止，因而 把刮板調整到零點位置。藉由該刮板平行調整裝置，位置 檢測感測器檢測與承接板一起設置在下降的檢測移動板上 的下降位置檢測擋塊，以及雨個位置檢測感測器在同時動 作時判定刮板的平行度，因此，可以認爲能夠減少錯誤動 作而進行高精度的刮板平行調整。 專利文獻1日本特開2005 - 8 8469號公報 專利文獻2日本特開2005-178012號公報 【發明內容】 [發明所欲解決的課題] 但是，上述專利文獻1記載的網板印刷機中的刮板平 行調整裝置，透過步進馬達控制驅動器輸出的警告信號使 刮板的下降停止，所以會出現步進馬達失調、實際的刮板 位置與輸出至步進馬達輸出的驅動脈衝數不一致的情形。 因此，該刮板平行調整裝置未必總是能夠進行高精度的刮 板平行調整。 而且，上述專利文獻2記載的網板印刷機中的刮板平 行調整裝置，在刮板的長邊方向上在兩處作爲獨立單元設 -6- 201139155 置平行度檢測機構，所以，零件數量增加而使價格高昂。 本發明係有鑒於上述現有技術中的問題點而提出，提 供可以進行高精度的刮板平行調整，而且廉價的網板印刷 機中的刮板平行調整裝置以及刮板平行調整方法。 [用以解決課題之手段] 爲了解決上述課題，本發明申請專利範圍第一項中提 及的網板印刷機的刮板平行調整裝置的特徵爲：在以使刮 板的下端緣與網板印刷機的印刷台成爲上面平行的方式進 行調整的網板印刷機的刮板平行調整裝置中，具備有：一 對升降調整機構，該一對升降調整機構與前述刮板的兩端 連接使該刮板升降，並且該刮板受到來自前述印刷台的抵 抗力而上升；一對升降機構，該一對升降機構使該升降調 整機構以及前述刮板升降至規定位置爲止；和一對檢測機 構，該一對檢測機構對前述升降調整機構的上升進行檢測 ，由此檢測前述刮板受到來自前述印刷台的抵抗力。 本發明申請專利範圍第二項中所提及的網板印刷機的 刮板平行調整裝置的特徵爲：在申請專利範圍第一項所記 載的刮板平行調整裝置中，前述升降調整機構，設有：在 前述印刷台的上方朝與該印刷台垂直的方向延伸，在下方 側具有開口的圓筒狀的調整管；固定在該調整管的上端的 驅動馬達；與該驅動馬達的馬達軸連接，在外周形成有外 螺紋的調整螺栓；和在前述調整管內於軸方向移動自如地 朝下方突出設置的調整塊，從前述調整塊的上端朝軸方向 201139155 凹入設置螺栓孔，在該調整塊的上端固定調整螺帽，該調 整螺帽貫通設置了內螺紋，該內螺紋以使前述調整螺栓在 該螺栓孔內朝軸方向移動自如的方式與該調整螺栓的外螺 紋螺合，在該調整塊的下端透過與該下端連接的刮板架而 連接前述刮板。 本發明申請專利範圍第三項所提及的網板印刷機的刮 板平行調整裝置的特徵爲：在申請專利範圍第二項所記載 的刮板平行調整裝置中，前述驅動馬達爲步進馬達。 本發明申請專利範圍第四項所提及的網板印刷機的刮 板平行調整裝置的特徵爲：在申請專利範圍第一至第三項 中任一項所記載的刮板平行調整裝置中，前述升降機構設 有基準板和流體缸，前述基準板在進行前述刮板的平行調 整期間距離前述印刷台的高度固定；前述流體缸，其缸桿 的前端被固定在連接塊上，該連接塊固定在前述調整管上 ，並且固定在該基準板上。 本發明申請專利範圍第五項所提及的網板印刷機的刮 板平行調整裝置的特徵爲：在申請專利範圍第四項所記載 的刮板平行調整裝置中，前述流體缸爲複動片缸桿的氣缸 〇 本發明申請專利範圍第六項所提及的網板印刷機的刮 板平行調整裝置的特徵爲：在申請專利範圍第一至第五項 中任一項所記載的刮板平行調整裝置中，前述檢測機構在 前述升降調整機構或前述升降機構的一方設置檢測板’在 前述升降調整機構或前述升降機構的另一方設置檢測該檢 -8 - 201139155 測板的光學感測器。 本發明申請專利範圍第七項所提及的網板印刷機的刮 板平行調整方法的特徵爲：該網板印刷機使用申請專利範 圍第一至第六項中的任一項所述的刮板平行調整裝置，該 調整方法’具有：第一過程、第二過程、第三過程、和第 四過程’該第一過程透過使雙方的前述升降機構同時動作 ’從而使雙方的前述升降調整機構下降，同時使前述刮板 下降至規定位置爲止；該第二過程透過使雙方的前述升降 調整機構同時動作，從而使該刮板下降，至前述刮板的兩 端受到來自前述印刷台的抵抗力被雙方的前述檢測機構檢 測到爲止；該第三過程把第一調整步驟和第二調整步驟交 替地反復進行規定次數，該第一調整步驟透過使一方的前 述升降調整機構動作，從而使前述刮板的一端上升，至前 述刮板的一端受到來自前述印刷台的抵抗力不被前述檢測 機構檢測到爲止，然後，使該刮板的一端下降，直至該刮 板的一端受到來自該印刷台的抵抗力被該檢測機構檢測到 爲止；該第二調整步驟係透過使另一方的前述升降調整機 構動作，從而使該刮板的另一端上升，至前述刮板的另一 端受到來自前述印刷台的抵抗力不能被前述檢測機構檢測 到爲止，然後，使該刮板的另一端下降，至該刮板的另一 端受到來自該印刷台的抵抗力被該檢測機構檢測到爲止； 該第四過程透過使雙方的前述升降機構同時動作’從而使 雙方的前述升降調整機構上升，同時使前述刮板上升到規 定位置爲止。 -9 - 201139155 [發明之效果] 在申請專利範圍第一項所提及的網板印刷機中的刮板 平行調整裝置中，透過刮板受到來自印刷台的抵抗力使與 刮板的兩端連接的一對升降調整機構上升。而且，透過一 對檢測機構對該升降調整機構的上升進行檢測，從而可以 檢測刮板受到來自印刷台的抵抗力。因此，只要根據該一 對檢測機構檢測的抵抗力調整刮板的位置，就可以精度良 好地進行刮板的平行調整。而且，在該刮板平行調整裝置 中，一對檢測機構的檢測對象爲升降調整機構的上升，不 需要設置用來檢測刮板受到來自印刷台的抵抗力的作爲單 個單元的另外零件，所以，可以減少零件數量。因此，經 由該刮板平行調整裝置，可以進行高精度的刮板平行調整 ，而且可以使裝置價格低廉》 在申請專利範圍第二項所提及的網板印刷機中的刮板 平行調整裝置中，調整塊在調整管內於軸方向移動自如地 朝下方突出設置，在調整塊的下端透過刮板架連接刮板。 而且，與固定在調整管的上端的驅動馬達的馬達軸連接的 調整螺栓，在調整塊的螺栓孔內朝軸方向移動自如地設置 著，在調整塊的上端固定著調整螺帽。該調整螺帽的內螺 紋與調整螺栓的外螺紋螺合，所以透過使驅動馬達進行正 反轉，就可以使調整塊進行升降，其結果，可以使刮板進 行升降。另外，刮板與印刷台抵接之後，即使進一步使刮 板下降，印刷台也會妨礙刮板和調整塊等的下降，取而代 -10- 201139155 之地由受到來自印刷台的抵抗力使調整管上升。因此，只 要檢測到調整管的上升，就可以檢測到刮板受到來自印刷 台的抵抗力。 在本發明申請專利範圍第三項所提及的網板印刷機中 的刮板平行調整裝置中，固定在調整管上端的驅動馬達爲 步進馬達，所以，容易進行控制。 本發明申請專利範圍第四項所提及的網板印刷機中的 刮板平行調整裝置中，升降機構的基準板在進行刮板平行 調整期間距離印刷台的高度固定，所以透過檢測升降調整 機構相對於該基準板的上升，就可以檢測出刮板受到來自 印刷台的抵抗力。而且，因爲流體缸的缸桿的前端固定在 連接塊上，該連接塊固定在調整管上，所以透過使流體缸 的缸桿升降就可以使升降調整機構和刮板升降到規定位置 〇 申請專利範圍第五項所提及的網板印刷機中的刮板平 行調整裝置中，流體缸爲複動片缸桿的氣缸，所以透過對 一方的通氣口供給高壓氣體，就可以使升降調整機構和刮 板下降到規定位置，透過向另一方的通氣口供給高壓氣體 就可以使升降調整機構和刮板上升到規定位置。另外，透 過向另一方的通氣口供給低壓氣體，可以將施加在刮板上 的調整管、驅動馬達、連接塊等的負荷抵消掉。因此，透 過對供給到另一方的通氣口的氣體壓力進行調整，可以調 整刮板受到來自印刷台的抵抗力，即能檢測的抵抗力的大 小。 -11 - 201139155 申請專利範圍第六項所提及的網板印刷機中的刮板平 行調整裝置中，在升降調整機構或升降機構的一方設置有 檢測板，在另一方設置有光學感測器，因此，可以簡單且 可靠地檢測出升降調整機構的上升，即刮板受到來自印刷 台的抵抗力。 申請專利範圍第七項所提及的網板印刷機中的刮板平 行調整方法中，在第三過程中，交替地反復進行規定次數 的第一調整步驟和第二調整步驟，該第一調整步驟在使刮 板的一端上升之後，使刮板的一端下降，至受到來自印刷 台抵抗力爲止；並在第二調整步驟中對刮板的另一端進行 同樣的操作，所以，可以精度更爲良好地進行刮板的平行 調整。 【實施方式】 下面根據圖式說明本發明所提及的網板印刷機中的刮 板平行調整裝置以及刮板平行調整方法的具體化了的實施 方式。第1圖爲使用實施方式的刮板平行調整裝置1的網 板印刷機的正面略圖。 如第1圖所示，該網板印刷機具備有：印刷台90 ; 刮板9 1，該刮板9 1在夾著被印刷物設置在印刷台90上 的網板印刷版（未圖示）的面上進行擦動，並在與其擦動 方向（第1圖的前後方向）垂直的方向（第1圖的左右方 向）上延伸；在與刮板91相同方向上延伸並固定在刮板 9 1的上端的刮板架92 ;設置在刮板架92的兩端，對刮板 -12- 201139155 91與印刷台90的面角度進行調整的一對角度調整機構93 ;和刮板平行調整裝置1。本實施方式中，在刮板架92 的兩端設有一對角度調整機構93，但是不設置角度調整 機構93也可以。 刮板平行調整裝置〗係進行刮板91的平行調整，並 且對被印刷物進行印刷處理，而且設有設置在刮板9 1的 兩端的一對升降機構2、一對升降調整機構3、和一對檢 測機構4。此外，與刮板平行調整裝置1相鄰地設有刮刀 平行調整裝置（未圖示）。該刮刀在與刮板91相同的方 向上延伸，在網板印刷版的面上擦動而使墨均勻。刮刀平 行調整裝置具有與刮板平行調整裝置1相同的機械結構和 動作，因此在下述中僅說明刮板平行調整裝置1，而省略 刮刀平行調整裝置的說明。 如第2圖所示，升降機構2係用來把升降調整機構3 和刮板9 1升降到規定位置爲止，且具有上板1 〇、下板1 1 、導向板12、氣缸14、連接塊20等。上板10與印刷台 90的上面平行地配置，在對刮板9 1進行平行調整期間距 離印刷台90的高度固定。該上板10透過導向板12固定 在被配置成與印刷台90的上面平行的下板〗1上。因此， 上板1 0、下板1 1、導向板1 2在進行刮板平行調整期間距 離印刷台9 0的高度固定。在導向板1 2上，在與印刷台 90的上面垂直的方向上延伸設置著用來對後述的導向件 21進行引導的軌道13。在此，上板10爲「基準板」。 在上板10的下表面，朝下方突出缸桿15，固定著複 -13- 201139155 動片缸桿的氣缸14。在氣缸14的下方配設連接塊20 ’連 接塊20和缸桿15的前端透過浮動連接器16固定。此外 ，在連接塊20的導向板12側設有軌道13引導的導向件 2 1。透過該軌道1 3和導向件2 1，確保連接塊20順暢地 進行上下運動。而且，連接塊20的與導向板1 2相反側固 定著升降調整機構3的後述的下管30。因此’透過使氣 缸1 4動作，可以把升降調整機構3和刮板91升降到規定 位置爲止。例如，透過從氣缸14的頂側（上方）通氣口 供給高壓氣體，可以把升降調整機構3和刮板91下降到 規定位置爲止。另外，透過從氣缸14的缸桿側（下方） 通氣口供給高壓氣體，可以使升降調整機構3和刮板9 1 上升到規定位置爲止》進而，透過從氣缸1 4的缸桿側（ 下方）通氣口供給高壓氣體，可以將施加在刮板91上的 連接塊20、後述的下管30、上管31、步進馬達32等的 負荷抵消掉。另外，透過對從該缸桿側（下方）通氣口供 給的低壓氣體的氣壓進行調整，可以調整施加在刮板91 上的連接塊2 0等的負荷，其結果可以如後述般’調整刮 板9 1從印刷台90受到的抵抗力’也就是能調整可檢測的 抵抗力的大小。在此，氣缸14爲「流體缸」。 升降調整機構3分別與刮板91的兩端連接，具有下 管30、上管31、步進馬達32、調整塊35、調整螺栓33 、調整螺帽36等。下管30爲圓筒狀’在印刷台90的上 方沿著與印刷台9 0上面垂直的方向延伸’在其上端連捧 上管31。在上管31的上端，把馬達軸插入上管31內’ -14- 201139155 固定著步進馬達32。在下管30內朝下管30的下方突出 地設置有調整塊35。在該調整塊35與下管30之間設置 套筒37，藉此使調整塊35可以在下管30內於軸方向移 動自如。另外，從調整塊35的上端於軸方向凹入地設置 著螺栓孔35a。而且’在調整塊35的上端固定調整螺帽 36，該調整螺帽36在軸方向貫穿設置有內螺紋。進而’ 在步進馬達32的馬達軸上’透過推力軸承34連接著在外 周形成有外螺紋的調整螺栓33。該調整螺栓33的外螺紋 與調整螺帽36的內螺紋進行螺合，而且，調整螺栓33能 在螺栓孔35a內沿軸方向移動自如。另一方面，在調整塊 35的下端透過刮板架92連接著刮板91。此外，在下管 30，上下設置著對調整塊35的上升以及下降進行限制的 上下限感測器3 8。在此，下管3 0和上管3 1爲「調整管 j ，步進馬達3 2爲「驅動馬達」。而且「驅動馬達」不 限於步進馬達3 2，例如也可以是伺服馬達。 在形成爲上述機械結構的升降調整機構3中，使步進 馬達32反轉時，與馬達軸連接的調整螺栓33反轉。而且 ，由於調整螺栓33的外螺紋與調整螺帽36的內螺紋螺合 ，使調整螺帽36下降。由此’調整塊35在下管30內下 降，刮板91因而下降。另外’使步進馬達32正轉時，與 馬達軸連接的調整螺栓33正轉，調整螺帽36上升。由此 ’調整塊35在下管30內上升’刮板91因而上升。本實 施方式中，從步進馬達3 2側觀看的馬達軸右轉的場合爲 正轉、從步進馬達3 2側觀看的馬達軸左轉的場合爲反轉 -15- 201139155 另外，使步進馬達3 2反轉而使刮板91下降，刮 91與印刷台90抵接之後，進一步使步進馬達32反轉 ，印刷台90會妨礙刮板9 1以及調整塊3 5等的下降， 而代之地，透過刮板從印刷台90受到的抵抗力使下管 、上管31、步進馬達32、連接塊20等上升。進而，從 狀態，即從受到來自印刷台90的抵抗力而使下管3 0等 升的狀態，使步進馬達32正轉時，下管30等下降，隨 ，刮板9 1從印刷台9 0受到的抵抗力變小。 檢測機構4具有擋塊41和檢測感測器40。擋塊 由鋼板形成，與軸方向垂直地突出地固定在升降調整機 3的下管30的上端側。另外，檢測感測器40固定在升 機構2的上板10的上面。移動下管30，擋塊41被檢 感測器40檢測到的狀態被稱作檢測感測器40的導通狀 ，擋塊4 1未被檢測感測器40檢測到的狀態被稱作檢測 測器40的斷開狀態。如此般，上板10在刮板91進行 行調整的期間距離印刷台90的高度固定，所以把檢測 測器40固定在該上板10上，把擋塊41固定在下管30 的話，就可以檢測到下管3 0相對於上板1 0的上升，可 檢測到刮板91從印刷台90受到的抵抗力。在此，擋 4 1爲「檢測板」。作爲檢測感測器40，也可以採用光 感測器、光纖感測器、接近開關、限制開關等。 以下使用第3圖所示的流程圖，說明採用具有上述 械化結構的刮板平行調整裝置1的網板印刷機中的刮板 板 時 取 30 該 上 之 4 1 構 降 測 態 感 平 感 上 以 塊 學 機 平 -16- 201139155 行調整方法。當按壓配置在網板印刷機前面的操作板（未 圖示）上的刮板平行調整開關時，刮板平行調整裝置1移 動到印刷台9 0上的中央位置（刮板91的擦動方向的中央 位置）。此時，從雙方的氣缸1 4的缸桿側（下方）通氣 口同時供給高壓氣體，並且使雙方的步進馬達32同時正 轉。由此，雙方的升降調整機構3以及刮板91上升到規 定位置爲止，變成第1圖、第2圖所示的狀態。另外，刮 板平行調整裝置1的移動位置不限於印刷台90上的中央 位置，可以是印刷台90上的任意位置。 變成第1圖、第2圖所示狀態時，實施第3圖所示的 流程圖的內容。在步驟S 1中，從雙方的氣缸14的頂側（ 上方）通氣口同時供給高壓氣體，由此，如第4圖所示那 樣，使雙方的升降調整機構3以及刮板91 —體地下降到 規定位置爲止。即，下管30、調整塊35 '刮板91等的相 對位置不改變，而下降到規定位置爲止。其結果，刮板 9 1的下端緣與印刷台90的上面具有間隙L1並相對向。 隨著升降調整機構3的下降，擋塊41移動到檢測感測器 40的下方。另外，從氣缸14的紅桿側（下方）通氣口供 給低壓氣體。藉此，可將施加在刮板91上的連接塊2 0 ' 下管30、上管31、步進馬達32等的負荷抵消掉。在此， 步驟S1爲「第一過程」。 在步驟S2中，使雙方的步進馬達32同時反轉，直至 雙方的檢測感測器40變成導通爲止。即’使刮板91下降 ，直至刮板9 1的兩端從印刷台9 0受到的抵抗力被雙方的 -17- 201139155 檢測感測器40檢測到爲止。詳細進行說明的話，首先’ 使步進馬達32反轉。由此，調整螺栓33反轉，調整螺帽 36下降。調整螺帽36下降時，調整塊35在下管30內下 降，使得刮板91下降。結果如第5圖所示，刮板91與印 刷台90抵接，間隙L1變成零。在此時，刮板91從印刷 台90受到的抵抗力爲零，擋塊41仍位於檢測感測器40 的下方位置不變。 進一步使步進馬達3 2反轉時，因印刷台90妨礙刮板 9 1和調整塊3 5等的下降，取而代之地透過刮板9 1從印 刷台90受到的抵抗力使下管30、上管31、步進馬達32 、連接塊20等上升。其結果，如第6圖、第7圖所示， 檢測感測器40變爲導通，步進馬達32停止。以上的動作 係雙方的升降調整機構3獨立地同時進行。透過對從缸桿 側（下方）的通氣口供給的低壓氣體的氣壓進行調整，可 以調整施加在刮板9 1上的連接塊20等的負荷，其結果可 以調整刮板9 1從印刷台90所受到的抵抗力，也就是能夠 透過檢測感測器40檢測的抵抗力的大小。另外，在步驟 S2中，爲了提高透過處理量而高速驅動步進馬達32。在 此，步驟S2爲「第二過程」。 在步驟S 3中，使第1圖中的圖面左側（以下稱爲「 一方」）的步進馬達3 2正轉，直至一方的檢測感測器40 變爲斷開。換言之，使一方的步進馬達3 2正轉，直至刮 板91的一端（第1圖中刮板91的左端，以下相同）從印 刷台90受到的抵抗力不被一方的檢測感測器40檢測到。 -18 - 201139155 此時，調整螺栓3 3正轉，但是刮板91以與從印刷台9 Q 受到的抵抗力相等大小的力推壓著印刷台90，所以，§|J 板91、調整塊35等不上升。取而代之地’下管30、上管 31、步進馬達32、連接塊20等下降。其結果，如第8圖 、第9圖所示，一方的檢測感測器4〇變成斷開，一方的 步進馬達3 2停止。 在步驟S4中，使一方的步進馬達32反轉，至—方的 檢測感測器40變成導通。換言之，使一方的步進馬達32 正轉，至刮板9 1的一端從印刷台9 0受到的抵抗力被〜方 的檢測感測器40檢測到。此時，調整螺栓3 3反轉，但是 印刷台90妨礙刮板91以及調整塊35等的下降，取而代 之地，透過刮板9 1從印刷台90受到的抵抗力使下管3 〇 、上管31、步進馬達32、連接塊20等上升。其結果，如 第6圖、第7圖所示，一方的檢測感測器40變成導通， 一方的步進馬達32停止。在此，步驟S3、S4爲「第一調 整步驟」。 在步驟S5中，使第1圖中的圖面右側（以下稱爲「 另一方」）的步進馬達32正轉，直至另一方的檢測感測 器40變爲斷開。即，使另一方的步進馬達32正轉，直至 刮板91的另一端（第1圖中刮板91的右端，以下相同） 從印刷台90受到的抵抗力不能被另一方的檢測感測器40 檢測到。此時，調整螺栓3 3正轉，但是刮板9 1以與從印 刷台9 0受到的抵抗力相等大小的力推壓者印刷台9 0，所 以，刮板91、調整塊3 5等不上升。取而代之地，下管3 〇 -19 - 201139155 、上管31、步進馬達32、連接塊20等下降。其結果’ 第8圖、第9圖同樣地，另一方的檢測感測器40變成 開，另一方的步進馬達32停止。 在步驟S6中，使另一方的步進馬達32反轉，至另 方的檢測感測器40變成導通。換言之，使另一方的步 馬達32正轉，直至刮板91的另一端從印刷台90受到 抵抗力被另一方的檢測感測器40檢測到。此時，調整 栓3 3反轉，但是因印刷台90妨礙刮板91以及調整塊 等的下降，取而代之地，透過刮板9 1從印刷台90受到 抵抗力使下管30、上管31、步進馬達32、連接塊20 上升。結果，與第6圖、第7圖同樣地，另一方的檢測 測器40變成導通，另一方的步進馬達3 2停止。在此， 驟S5、S6爲「第二調整步驟」。而且，步驟S3~S6中 爲了進一步確保高精度進行刮板91的平行調整，低速 動步進馬達3 2。 在步驟S7中，檢査在步驟S3〜S6的處理是否進行 規定次數。在該規定次數過少的場合，將無法確保高精 進行刮板的平行調整，在該規定次數過多的場合，透過 理量低下。根據本發明發明人進行的實驗，規定次數較 爲3〜5次，在本贲施方式中爲3次。在步驟S3~S6的 理進行規定次數的場合（Y)執行實施步驟S8，在沒有 行規定次數的場合（N )返回步驟S 3。在此，步驟S 3 ~ 爲「第三過程」。 在步驟S8中’透過從雙方的氣缸14的缸桿側（下 與 斷 進 的 螺 35 的 等 感 步 驅 了 度 處 佳 處 進 S7 方 -20- 201139155 )的通氣口同時供給高壓氣體，使雙方的升降調整機構3 以及刮板91 —同上升到規定位置爲止。換言之，下管3〇 '調整塊3 5 '刮板9 !等的相對位置不變地上升到規定位 置。其結果，變成第i圖、第2圖所示的狀態，全部處理 結束。在此，步驟S8爲「第四過程」。 接著用第1 0圖說明各步驟中的刮板9 1與印刷台90 的關係。在步驟S1結束時，如第1 〇圖（1 )所示，刮板 9 1與印刷台9 0具有間隙L 1並相對向。在步驟S 2結束時 ，如第1 〇圖（2 )所示，刮板91與印刷台9 0密接，刮板 9 1的兩端從印刷台90受到規定的抵抗力。而且，在步驟 S 3結束時，如第1 〇圖（3 )所示，刮板91的一端未從印 刷台90受到規定的抵抗力。另外，在該圖中，爲了方便 而顯示刮板9 1的一端與印刷台90分離的狀態，但是實際 上爲刮板9 1的一端與印刷台90抵接的狀態。在步驟S4 結束時，如第10圖（4 )所示’刮板91的一端與印刷台 90再次緊密接合’刮板9 1的—端從印刷台90受到規定 的抵抗力。並且’在步驟S5結束時’如第1 0圖（5 )所 示，刮板9 1的另一端未從印刷台9 0受到規定的抵抗力。 此外，在該圖中’爲了方便而表示出了刮板91的另一端 與印刷台9 0分離的狀氣’但是貫際上爲刮板91的另一端 與印刷台9 0抵接的狀態。在步驟s 6結束時’如第1 0圖 (6 )所示，刮板91的另一端與印刷台9 0再次密接’刮 板9 1的另一端從印刷台90受到規定抵抗力。而且，按規 定次數反復進行步驟S3~S6(弟1〇圖（3)〜第10圖（6 -21 - 201139155 ))，刮板9 1的平行調整結束。在該刮板9 1的平行調 期間，各步驟中的兩個步進馬達32的驅動脈衝數被存 在控制裝置（未圖示）內的記憶體中。而且，根據在這 驅動脈衝數上加上被印刷物固有的脈衝數、兩個擋塊 以及檢測感測器40的安裝誤差等之修正脈衝數而得到 結果，計算出該被印刷物印刷中的兩步進馬達32的驅 脈衝數。 如上所述，用第1 1圖說明上述那樣反復進行規定 數的步驟S3〜S6的理由。在第11圖中，92a、92b爲刮 架92的兩端與兩個升降調整機構3的接合點。在步驟 中，一方的檢測感測器40先變爲導通。此時，如第1 1 的虛線所示，刮板9 1的一端與印刷台90緊密接合’且 板91的一端受到印刷台90規定的抵抗力。接著’另一 的檢測感測器40變爲導通時’如第1 1圖的實線所示’ 板91的另一端與印刷台9 0密接，刮板91的另一端從 刷台9 0受到規定的抵抗力。此時，刮板架9 2變成以接 點9 2 a爲中心進行轉動的狀態’接合點9 2 a與刮板91 一端離開，所以刮板9 1的一端下降距離L2的量。實際 ，由於存在印刷台9 0 ’所以刮板91的一端無法下降’ 是進一步受到與下降距離L2相當的抵抗力。而且’下 30、上管31、步進馬達32、連接塊20等上升，與所增 的抵抗力相當的量。這樣’在步驟S2中’在兩個檢測 測器4 0不同時導通的場合’先行導通的檢測感測器4 0 的刮板91的調整會發生偏移’因此’反復進行規定次 整 儲 些 4 1 的 動 次 板 S2 圖 刮 方 刮 印 合 的 上 而 管 加 感 側 數 -22- 201139155 的步驟S3〜S6，以使刮板91的平行調整的精度提高。 在實施方式中所提及的網板印刷機中的刮板平行調整 裝置中，刮板9 1透過從印刷台90受到的抵抗力，使與刮 板91的兩端連接的一對下管30等上升。而且，可以透過 一對檢測感測器40檢測該下管3 0的上升，來檢測出刮板 9 1從印刷台90受到的抵抗力。因此，只要根據該一對檢 測感測器40檢測到的抵抗力調整刮板9 1的位置，就可以 精度良好地進行刮板9 1的平行調整。而且，在該刮板平 行調整裝置1中，一對擋塊4 1以及檢測感測器40的檢測 對象爲下管30的上升，不需要設置另外的零件用來檢測 刮板9 1從印刷台90受到的抵抗力的另外的單元，所以可 以減少零件數量。因此，根據該刮板平行調整裝置，可以 高精度進行刮板的平行調整，而且可以使其價格低廉。 另外，在該刮板平行調整裝置中，調整塊35在下管 3〇內於軸方向移動自如地朝下方突出設置，在調整塊35 的下端透過刮板架92連接刮板9 1。而且，與固定在上管 31的上端的步進馬達32的馬達軸連接的調整螺栓33，在 調整塊35的螺栓孔35a內於軸方向移動自如地設置著， 在調整塊35的上端固定著調整螺帽36。該調整螺帽36 與調整螺栓3 3螺合，所以藉由使步進馬達3 2進行正反轉 就可以使調整塊3 5升降。結果，可以使刮板9 1進行升降 。另外，刮板9 1與印刷台9 0抵接之後，即使進一步使刮 板91下降，也可以藉由印刷台90阻礙刮板91以及調整 塊3 5等的下降，取而代之地經由從印刷台90受到的抵抗 -23- 201139155 力使調整塊3 5上升。因此’只要檢測到調整塊3 5的上升 ，就可以檢測刮板9 1從印刷台9 0受到的抵抗力。 進而，在此刮板平行調整方法中，在第三過程中，交 替地反復進行規定次數的使刮板9 1的一端上升之後，使 刮板9 1的一端下降直至從印刷台90受到抵抗力爲止的步 驟S3、S4，和對刮板91的另一端進行同樣操作的步驟S5 、S6，所以可以更加精度良好地進行刮板9 1的平行調整 〇 在本實施方式中，在兩個檢測感測器4〇導通的狀態 ，即刮板9 1的兩端從印刷台90受到抵抗力的狀態下，刮 板9 1的平行調整結束，但是也可以在兩個檢測感測器40 爲斷開的狀態，即刮板9 1的兩端未從印刷台90受到抵抗 力的狀態下，結束刮板91的平行調整。 以上就本發明的網板印刷機中的刮板平行調整裝置以 及刮板平行調整方法的實施方式進行了說明，但是本發明 不限於此，在不違背本發明技術構思的情況下當然可以進 行適當變更。 【圖式簡單說明】 第1圖是使用了實施例的刮板平行調整裝置的網板印 刷機的正面略圖。 第2圖是實施方式提及的刮板平行調整裝置的局部放 大剖面圖。 第3圖是實施方式的刮板平行調整方法的流程圖。 -24- 201139155 胃4圖是實施方式提及的刮板平行調整裝置，表示刮 板下降到規定位置爲止的狀態的局部放大剖面圖。 胃5圖表示實施方式提及的刮板平行調整裝置，爲透 過驅動馬達的反轉使刮板與印刷台抵接的狀態的局部放大 剖面圖。 第6圖表示實施方式提及的刮板平行調整裝置，爲透 過驅動馬達的反轉使刮板受到來自印刷台抵抗力的狀態的 局部放大剖面圖。 第7圖表示實施方式提及的刮板平行調整裝置，爲第 6圖中的檢測機構的放大圖。 第8圖表示實施方式提及的刮板平行調整裝置，爲透 過驅動馬達的正反轉使刮板去除了自印刷台的抵抗力後的 狀態的局部放大剖面圖。 第9圖表示實施方式提及的刮板平行調整裝置，爲第 8圖中的檢測機構的放大圖。 第10圖表示實施方式提及的刮板平行調整方法，是 表示刮板與印刷台的關係的簡圖。 第11圖表示實施方式提及的刮板平行調整方法，是 詳細表示刮板與印刷台的關係的圖。 【主要元件符號說明】 1 :刮板平行調整機構 3 :升降調整機構 30、31:調整管（30:下管、31:上管） -25- 201139155 3 2 :驅動馬達（步進馬達） 3 3 :調整螺栓 3 5 :調整塊 3 5 a :螺栓孔 36 :調整螺帽 2 :升降機構 10 :基準板（上板） 14 :流體缸（氣缸） 1 5 :缸桿 2 0 :連接塊 4 :檢測機構 41 :檢測板（擋塊） 40 :檢測感測器 90 :印刷台 9 1 :刮板 92 :刮板架 5 1 :第一過程 S2 :第二過程 S3〜S7:第三過程（S3、S4:第一調整步驟 S5、S6 :第二調整步驟） S 8 :第四過程 -26-201139155 VI. Description of the invention: [Technical Field] The present invention refers to adjusting the parallel and height of the lower edge of the squeegee relative to the upper surface of the printing table to the reference position, that is, to the so-called zero point position, The parallel adjustment device of the squeegee and the parallel adjustment method of the squeegee in the screen printing machine. [Prior Art] In the screen printing machine, In order to ensure precise printing processing, The lower edge of the squeegee must be parallel to the top of the printing table. and, As the squeegee wears as the printing process continues, So you need to replace the scraper, At this time, parallel adjustment of the squeegee is required. As far as the squeegee parallel adjustment device is concerned, A squeegee parallel adjustment device in the screen printing machine described in Patent Document 1 is known. The squeegee parallel adjustment device does not use a special detecting device for detecting the lower edge of the squeegee. Such as optical sensors, Instead, a stepping motor that raises and lowers the squeegee is used as a detecting device. The squeegee parallel adjustment device, First, the maximum load of the stepping motor is set by the current adjustment amount. and, In the parallel adjustment device of the scraper, Lower the squeegee, When the squeegee is crimped to the printing table and exceeds the maximum load, A warning signal is output from the stepper motor control driver. Stopping the lowering of the squeegee based on the output signal, Thereby the squeegee is adjusted to the zero position. By means of the scraper parallel adjustment device, There is no need to provide a device for detecting the lower end edge of the squeegee. Therefore, the parallel adjustment of the squeegee can be performed with a simple configuration. and, A squeegee leveling device in the screen printing machine described in Patent Document 2 is known. The squeegee parallel adjustment device is connected to the detection moving plate connected to the rod of the -5-201139155 fluid cylinder disposed on the printing table, Position detection sensor adjacent to the fluid cylinder, And the receiving plate provided on the detecting moving plate constitutes a parallelism detecting means for detecting the parallelism of the blade. and, The parallelism detecting mechanism is disposed at two locations in the longitudinal direction of the squeegee. The squeegee is adjusted in parallel, The squeegee descends and pushes the receiving plate, When the two position detecting sensors simultaneously detect the falling position detecting block, Stop the squeegee down, Thus adjust the squeegee to the zero position. With the squeegee parallel adjustment device, The position detecting sensor detects the falling position detecting block disposed on the descending detecting moving plate together with the receiving plate, And the rain position detecting sensor determines the parallelism of the squeegee when simultaneously operating, therefore, It is considered that the erroneous movement can be reduced and the high-precision squeegee parallel adjustment can be performed. [Patent Document 1] JP-A-2005-178012 (Patent Document 2) [Problems to be Solved by the Invention] However, The squeegee leveling adjustment device in the screen printing machine described in Patent Document 1 above, The warning signal output from the drive is controlled by the stepping motor to stop the lowering of the squeegee. So there will be stepper motor imbalance, The actual scraper position does not match the number of drive pulses output to the stepper motor output. therefore, The squeegee parallel adjustment device is not always capable of performing high-precision squeegee parallel adjustment. and, The squeegee leveling adjustment device in the screen printing machine described in Patent Document 2, In the long side direction of the squeegee, it is set as a separate unit at two places. -6- 201139155 Parallelism detection mechanism, and so, The number of parts has increased and the price has been high. The present invention has been made in view of the above problems in the prior art, Provides high-precision squeegee parallel adjustment Moreover, the squeegee parallel adjustment device and the squeegee parallel adjustment method in the inexpensive screen printing machine. [Means for Solving the Problem] In order to solve the above problems, The squeegee parallel adjustment device of the screen printing machine mentioned in the first paragraph of the patent application scope of the present invention is characterized by: In the squeegee parallel adjusting device of the screen printing machine which adjusts the lower end edge of the squeegee in parallel with the printing table of the screen printing machine, Have: a pair of lifting adjustment mechanisms, The pair of lifting and adjusting mechanisms are connected to both ends of the squeegee to lift and lower the squeegee. And the squeegee is raised by the resistance from the printing table; a pair of lifting mechanisms, The pair of lifting mechanisms lifts the lifting and lowering mechanism and the scraper to a predetermined position; And a pair of inspection agencies, The pair of detecting mechanisms detect the rise of the lifting and lowering adjustment mechanism, Thereby, the aforementioned squeegee is detected to be subjected to resistance from the aforementioned printing table. The squeegee parallel adjustment device of the screen printing machine mentioned in the second item of the scope of the patent application of the present invention is characterized by: In the squeegee parallel adjustment device recorded in the first paragraph of the patent application scope, The aforementioned lifting adjustment mechanism, Featuring: Extending in a direction perpendicular to the printing table above the printing table, a cylindrical adjustment tube having an opening on the lower side; a drive motor fixed to an upper end of the adjustment tube; Connected to the motor shaft of the drive motor, An adjusting bolt having an external thread formed on the outer circumference; And an adjustment block that is slidably disposed downward in the axial direction in the adjustment tube, a bolt hole is recessed from the upper end of the aforementioned adjustment block toward the axial direction 201139155, Fix the adjusting nut at the upper end of the adjusting block, The adjusting nut is internally threaded. The internal thread is screwed to the outer thread of the adjusting bolt such that the adjusting bolt is freely movable in the bolt hole in the axial direction. The squeegee is connected to the lower end of the adjusting block through a squeegee frame connected to the lower end. The squeegee parallel adjustment device of the screen printing machine mentioned in the third aspect of the invention is characterized by: In the squeegee parallel adjustment device described in the second paragraph of the patent application, The aforementioned drive motor is a stepping motor. The squeegee parallel adjustment device of the screen printing machine mentioned in the fourth aspect of the invention is characterized by: In the squeegee parallel adjustment device described in any one of the first to third aspects of the patent application, The lifting mechanism is provided with a reference plate and a fluid cylinder. The reference plate is fixed from the height of the printing table during the parallel adjustment of the squeegee; The aforementioned fluid cylinder, The front end of the cylinder rod is fixed to the connecting block. The connecting block is fixed on the aforementioned adjusting tube, And fixed on the reference board. The squeegee parallel adjustment device of the screen printing machine mentioned in the fifth aspect of the invention is characterized by: In the squeegee parallel adjustment device described in the fourth paragraph of the patent application, The fluid cylinder is a cylinder of a double acting cylinder rod. The squeegee parallel adjusting device of the screen printing machine mentioned in the sixth aspect of the invention is characterized by: In the squeegee parallel adjustment device described in any one of the first to fifth aspects of the patent application, The detecting means is provided with a detecting plate at one of the lifting and lowering mechanism or the elevating mechanism, and an optical sensor for detecting the test plate - Detecting the test plate - is provided on the other of the lift adjusting mechanism or the lifting mechanism. The method for parallel adjustment of the squeegee of the screen printing machine mentioned in the seventh aspect of the invention is as follows: The screen printing machine uses the squeegee parallel adjustment device according to any one of the first to sixth aspects of the patent application, The adjustment method' has: The first process, Second process, The third process, And the fourth process, wherein the first process lowers the lifting adjustment mechanism of both sides by causing both of the lifting mechanisms to operate simultaneously At the same time, the scraper is lowered to a predetermined position; The second process is performed by simultaneously moving the two lifting and lowering mechanisms of both sides. Thereby causing the squeegee to descend, When the resistance of the two ends of the squeegee from the printing table is detected by the aforementioned detecting means of both sides; The third process alternately repeats the first adjustment step and the second adjustment step a predetermined number of times. The first adjustment step is performed by operating one of the above-described lifting adjustment mechanisms. Thereby raising one end of the aforementioned scraper, When the end of the squeegee is subjected to the resistance from the printing table, it is not detected by the detecting means. then, Lower one end of the squeegee, Until the end of the squeegee is detected by the detecting mechanism by the resistance from the printing table; The second adjustment step is performed by moving the other lifting adjustment mechanism of the other side. Thereby raising the other end of the squeegee, Until the other end of the squeegee is subjected to the resistance from the printing station, the detection mechanism cannot be detected by the aforementioned detecting mechanism. then, Lower the other end of the squeegee, Until the other end of the squeegee is detected by the detecting mechanism by the resistance from the printing table; In the fourth process, the lifting and lowering mechanisms of both sides are raised by causing both of the lifting mechanisms to operate simultaneously. At the same time, the aforementioned squeegee is raised to the predetermined position. -9 - 201139155 [Effects of the Invention] In the squeegee parallel adjustment device in the screen printing machine mentioned in the first paragraph of the patent application, The pair of lifting adjustment mechanisms connected to both ends of the squeegee are raised by the resistance of the squeegee from the printing table. and, The rise of the lift adjustment mechanism is detected by a pair of detecting mechanisms, Thereby, it is possible to detect that the blade is subjected to resistance from the printing table. therefore, As long as the position of the squeegee is adjusted according to the resistance detected by the pair of detecting mechanisms, The parallel adjustment of the squeegee can be performed with high precision. and, In the squeegee parallel adjustment device, The detection object of the pair of detecting mechanisms is the rise of the lifting adjustment mechanism. It is not necessary to provide another part as a single unit for detecting that the blade is subjected to resistance from the printing table. and so, You can reduce the number of parts. therefore, By means of the squeegee parallel adjustment device, High-precision scraper parallel adjustment is possible Moreover, the device can be made inexpensive. In the squeegee parallel adjustment device in the stencil printing machine mentioned in the second application of the patent application, The adjustment block is movably moved downward in the direction of the axis in the adjustment tube, Connect the squeegee through the squeegee frame at the lower end of the adjustment block. and, An adjusting bolt connected to a motor shaft of a drive motor fixed to an upper end of the adjustment tube, Moved in the bolt hole of the adjustment block in the axial direction, An adjustment nut is fixed to the upper end of the adjustment block. The inner thread of the adjusting nut is screwed with the external thread of the adjusting bolt, So by making the drive motor positive and negative, It is possible to raise and lower the adjustment block. the result, The squeegee can be raised and lowered. In addition, After the squeegee abuts the printing table, Even if the scraper is further lowered, The printing table also hinders the reduction of the squeegee and the adjustment block, etc. In the place of -10- 201139155, the adjustment tube is raised by the resistance from the printing table. therefore, As long as the rise of the adjustment tube is detected, It is possible to detect that the squeegee is subjected to resistance from the printing table. In the squeegee parallel adjusting device in the screen printing machine mentioned in the third aspect of the invention patent application, The drive motor fixed to the upper end of the adjustment tube is a stepping motor. and so, Easy to control. In the squeegee parallel adjusting device in the screen printing machine mentioned in the fourth aspect of the invention patent application, The reference plate of the lifting mechanism is fixed to the height of the printing table during the parallel adjustment of the squeegee. Therefore, by detecting the rise of the lift adjustment mechanism relative to the reference plate, It is possible to detect that the squeegee is subjected to resistance from the printing table. and, Because the front end of the cylinder rod of the fluid cylinder is fixed on the connecting block, The connecting block is fixed on the adjusting tube, Therefore, the lifting adjustment mechanism and the squeegee can be raised and lowered to a predetermined position by lifting the cylinder rod of the fluid cylinder. 中 In the squeegee parallel adjusting device in the stencil printing machine mentioned in the fifth application patent scope, The fluid cylinder is a cylinder of a double acting cylinder rod. Therefore, by supplying high pressure gas to one of the vents, It is possible to lower the lifting adjustment mechanism and the scraper to a prescribed position. The lifting adjustment mechanism and the squeegee can be raised to a predetermined position by supplying high-pressure gas to the other vent. In addition, By supplying low pressure gas to the other vent, The adjustment tube applied to the squeegee can be Drive motor, The load of the connection block or the like is offset. therefore, By adjusting the pressure of the gas supplied to the vent of the other side, The squeegee can be adjusted to be resistant from the printing table. That is, the magnitude of the resistance that can be detected. -11 - 201139155 In the squeegee leveling device in the stencil printing machine mentioned in the sixth paragraph of the patent application, a detection board is provided on one side of the lifting adjustment mechanism or the lifting mechanism, On the other side is provided an optical sensor, therefore, The rise and fall of the lift adjustment mechanism can be detected simply and reliably. That is, the squeegee is subjected to resistance from the printing table. In the squeegee parallel adjustment method in the screen printing machine mentioned in the seventh application patent scope, In the third process, Repeating the first adjustment step and the second adjustment step a predetermined number of times, The first adjustment step is after raising one end of the squeegee, Lower one end of the scraper, Until the resistance from the printing station; And performing the same operation on the other end of the squeegee in the second adjustment step, and so, The parallel adjustment of the squeegee can be performed with better precision. [Embodiment] Hereinafter, an embodiment of a blade parallel adjusting device and a blade parallel adjusting method in the screen printing machine of the present invention will be described with reference to the drawings. Fig. 1 is a front elevational view showing a screen printing machine using the blade parallel adjusting device 1 of the embodiment. As shown in Figure 1, The screen printing machine is provided with: Printing station 90; Scraper 9 1, The squeegee 9 1 is rubbed on the surface of the screen printing plate (not shown) provided on the printing table 90 with the printed matter interposed therebetween. And extending in a direction perpendicular to the rubbing direction (the front-rear direction of FIG. 1) (the left-right direction of FIG. 1); a scraper frame 92 extending in the same direction as the squeegee 91 and fixed to the upper end of the squeegee 9 1 ; Set at both ends of the squeegee frame 92, a pair of angle adjusting mechanisms 93 for adjusting the plane angle of the printing plate 90 to the squeegee -12- 201139155 91; The device 1 is adjusted in parallel with the squeegee. In this embodiment, A pair of angle adjusting mechanisms 93 are provided at both ends of the squeegee frame 92, However, the angle adjustment mechanism 93 may not be provided. The parallel adjustment device of the squeegee is to perform parallel adjustment of the squeegee 91, And printing the printed matter, Further, a pair of lifting mechanisms 2 provided at both ends of the squeegee 9 1 are provided a pair of lifting adjustment mechanism 3, And a pair of detection mechanisms 4. In addition, A doctor blade parallel adjustment device (not shown) is provided adjacent to the blade parallel adjustment device 1. The scraper extends in the same direction as the squeegee 91, Wipe the surface of the screen printing plate to make the ink uniform. The doctor blade level adjusting device has the same mechanical structure and action as the blade parallel adjusting device 1, Therefore, only the squeegee parallel adjustment device 1 will be described below. The description of the scraper parallel adjustment device is omitted. As shown in Figure 2, The lifting mechanism 2 is used to raise and lower the lifting and lowering mechanism 3 and the squeegee 9 1 to a predetermined position. And has an upper plate 1 〇, Lower plate 1 1 , Guide plate 12, Cylinder 14, Connect the block 20 and the like. The upper plate 10 is disposed in parallel with the upper surface of the printing table 90, The height from the printing table 90 is fixed during the parallel adjustment of the squeegee 9 1 . The upper plate 10 is fixed to the lower plate 1 which is disposed parallel to the upper surface of the printing table 90 via the guide plate 12. therefore, Upper board 10, Lower board 1 1. The guide plate 12 is fixed to the height of the printing table 90 during the parallel adjustment of the squeegee. On the guide plate 12, A rail 13 for guiding a guide 21 to be described later is extended in a direction perpendicular to the upper surface of the printing table 90. here, The upper board 10 is a "reference board". On the lower surface of the upper plate 10, Projecting the cylinder rod 15 downward, Fixing the cylinder 14 of the moving cylinder rod -13- 201139155. A connecting block 20' is disposed below the cylinder 14, and the front end of the connecting block 20 and the cylinder rod 15 is fixed by the floating connector 16. In addition, On the side of the guide plate 12 of the connecting block 20, a guide member 21 guided by the rail 13 is provided. Through the track 13 and the guide 2 1, Make sure that the connecting block 20 moves up and down smoothly. and, The lower tube 30, which will be described later, of the elevation adjusting mechanism 3 is fixed to the side of the connecting block 20 opposite to the guide plate 12. Therefore, by moving the cylinder 14 4, The elevating adjustment mechanism 3 and the squeegee 91 can be raised and lowered to a predetermined position. E.g, By supplying high pressure gas from the top side (upper) vent of the cylinder 14, The elevating adjustment mechanism 3 and the squeegee 91 can be lowered to a predetermined position. In addition, By supplying high pressure gas from the cylinder side (lower) vent of the cylinder 14, The lifting adjustment mechanism 3 and the squeegee 9 1 can be raised to a predetermined position. Further, By supplying high pressure gas from the cylinder rod side (lower) vent of the cylinder 14 The connection block 20 applied to the squeegee 91 can be Lower tube 30, which will be described later, Upper tube 31, The load of the stepping motor 32 or the like is offset. In addition, By adjusting the air pressure of the low-pressure gas supplied from the vent of the cylinder rod side (bottom), The load of the connection block 20 and the like applied to the squeegee 91 can be adjusted, As a result, the resistance of the blade 9 1 from the printing table 90 can be adjusted as described later, that is, the magnitude of the detectable resistance can be adjusted. here, The cylinder 14 is a "fluid cylinder". The lifting and lowering adjustment mechanism 3 is respectively connected to both ends of the squeegee 91, With a lower tube 30, Upper tube 31, Stepper motor 32, Adjustment block 35, Adjustment bolt 33, Adjust the nut 36 and the like. The lower tube 30 has a cylindrical shape "extending in a direction perpendicular to the upper surface of the printing table 90 above the printing table 90" and holds the upper tube 31 at its upper end. At the upper end of the upper tube 31, Insert the motor shaft into the upper tube 31 ' -14- 201139155 to fix the stepping motor 32. An adjustment block 35 is provided in the lower tube 30 so as to protrude downward from the lower tube 30. A sleeve 37 is disposed between the adjusting block 35 and the lower tube 30, Thereby, the adjustment block 35 can be moved in the axial direction in the lower tube 30. In addition, A bolt hole 35a is recessed from the upper end of the adjusting block 35 in the axial direction. Moreover, the adjustment nut 36 is fixed at the upper end of the adjustment block 35, The adjustment nut 36 is internally threaded in the axial direction. Further, an adjustment bolt 33 having an external thread formed on the outer periphery thereof is connected to the thrust shaft bearing 34 via the thrust shaft of the stepping motor 32. The external thread of the adjusting bolt 33 is screwed with the internal thread of the adjusting nut 36, and, The adjusting bolt 33 is movable in the axial direction in the bolt hole 35a. on the other hand, A squeegee 91 is connected to the lower end of the adjustment block 35 via a squeegee holder 92. In addition, In the lower tube 30, Upper and lower limit sensors 38 that limit the rise and fall of the adjustment block 35 are provided above and below. here, The lower tube 3 0 and the upper tube 3 1 are "adjustment tube j , The stepping motor 32 is a "drive motor". Further, the "drive motor" is not limited to the stepping motor 3 2, For example, it may be a servo motor. In the lift adjustment mechanism 3 formed as the above-described mechanical structure, When the stepping motor 32 is reversed, The adjustment bolt 33 connected to the motor shaft is reversed. And, Since the external thread of the adjusting bolt 33 is screwed with the internal thread of the adjusting nut 36, The adjustment nut 36 is lowered. Thereby, the adjustment block 35 is lowered in the lower tube 30, The squeegee 91 thus descends. In addition, when the stepping motor 32 is rotated forward, The adjusting bolt 33 connected to the motor shaft rotates forward, The adjustment nut 36 is raised. Thereby, the adjustment block 35 rises in the lower tube 30, and the squeegee 91 thus rises. In this embodiment, When the motor shaft viewed from the side of the stepping motor 3 2 is turned right, it is forward rotation, The left side of the motor shaft viewed from the side of the stepping motor 3 2 is reversed -15- 201139155 In addition, The stepping motor 3 2 is reversed to lower the squeegee 91, After the blade 91 is in contact with the printing table 90, Further reversing the stepping motor 32, The printing table 90 may hinder the lowering of the squeegee 9 1 and the adjustment block 35 and the like. Instead, The resistance received from the printing table 90 through the squeegee causes the lower tube, Upper tube 31, Stepper motor 32, The connection block 20 or the like rises. and then, From the state, That is, the state in which the lower tube 30 is raised from the resistance from the printing table 90 is When the stepping motor 32 is rotated forward, The lower tube 30 is lowered, With The resistance of the squeegee 9 1 from the printing table 90 is reduced. The detecting mechanism 4 has a stopper 41 and a detecting sensor 40. The stopper is formed of a steel plate. The upper end side of the lower tube 30 of the elevation adjuster 3 is fixedly protruded perpendicularly to the axial direction. In addition, The detecting sensor 40 is fixed to the upper surface of the upper plate 10 of the lifting mechanism 2. Move the lower tube 30, The state in which the stopper 41 is detected by the sensor 40 is referred to as the conduction state of the detecting sensor 40, The state in which the stopper 41 is not detected by the detecting sensor 40 is referred to as the off state of the detector 40. So, The upper plate 10 is fixed to the height of the printing table 90 while the squeegee 91 is being adjusted. Therefore, the detector 40 is fixed to the upper plate 10, When the stopper 41 is fixed to the lower tube 30, It is possible to detect the rise of the lower tube 30 relative to the upper plate 10, The resistance of the squeegee 91 from the printing table 90 can be detected. here, Block 4 1 is the "test board". As the detecting sensor 40, It is also possible to use a light sensor, Fiber optic sensor, Proximity switch, Limit switches, etc. The flow chart shown in Figure 3 is used below. Note that when the squeegee in the screen printing machine of the squeegee parallel adjustment device 1 having the above-described mechanical structure is taken, 30 is taken on the upper side of the slab. Adjustment method. When pressing the squeegee parallel adjustment switch disposed on the operation panel (not shown) on the front of the screen printing machine, The squeegee parallel adjustment device 1 is moved to a central position on the printing table 90 (the center position of the wiping direction of the squeegee 91). at this time, Simultaneously supplying high-pressure gas from the cylinder side (lower) vents of the cylinders 14 of both sides, And the stepping motors 32 of both sides are simultaneously rotated forward. thus, Both the lift adjustment mechanism 3 and the squeegee 91 are raised to the predetermined position. It becomes the first picture, The state shown in Figure 2. In addition, The moving position of the blade parallel adjusting device 1 is not limited to the central position on the printing table 90, It can be anywhere on the printing station 90. It becomes the first picture, In the state shown in Figure 2, The contents of the flowchart shown in Fig. 3 are implemented. In step S1, Simultaneously supplying high-pressure gas from the top side (upper) vents of the cylinders 14 of both sides, thus, As shown in Figure 4, Both the lift adjustment mechanism 3 and the squeegee 91 are physically lowered to a predetermined position. which is, Lower tube 30, The relative position of the adjustment block 35 'scraper 91 and the like does not change, And it falls to the specified position. the result, The lower end edge of the squeegee 9 1 has a gap L1 opposite to the upper surface of the printing table 90. With the drop of the lift adjustment mechanism 3, The stopper 41 is moved below the detecting sensor 40. In addition, Low pressure gas is supplied from the red rod side (lower) vent of the cylinder 14. With this, The connecting block 20 0 'the lower tube 30 applied to the squeegee 91 can be Upper tube 31, The load of the stepping motor 32 or the like is offset. here, Step S1 is the "first process". In step S2, The stepping motor 32 of both sides is reversed at the same time. Until the detection sensors 40 of both sides become conductive. That is, 'the scraper 91 is lowered, The resistance received from both ends of the squeegee 9 1 from the printing table 90 is detected by both of the -17-201139155 detecting sensors 40. If you explain in detail, First, the stepping motor 32 is reversed. thus, The adjustment bolt 33 is reversed, Adjust the nut 36 down. When the adjustment nut 36 is lowered, The adjustment block 35 descends in the lower tube 30, The squeegee 91 is lowered. The result is shown in Figure 5, The squeegee 91 abuts against the printing table 90, The gap L1 becomes zero. currently, The squeegee 91 receives zero resistance from the printing table 90. The stop 41 is still located at a position below the detection sensor 40. Further, when the stepping motor 3 2 is reversed, Since the printing table 90 hinders the lowering of the squeegee 9 1 and the adjustment block 35, etc., Instead, the resistance received by the squeegee 9 1 from the printing table 90 causes the lower tube 30, Upper tube 31, Stepper motor 32, The connection block 20 or the like rises. the result, As shown in Figure 6, As shown in Figure 7, The detecting sensor 40 becomes conductive, The stepping motor 32 is stopped. The above operations are performed simultaneously by the lift adjustment mechanisms 3 of both of them. By adjusting the air pressure of the low-pressure gas supplied from the vent port on the cylinder side (lower side), The load of the connection block 20 or the like applied to the squeegee 9 1 can be adjusted, As a result, the resistance of the blade 91 from the printing table 90 can be adjusted. That is, the magnitude of the resistance that can be detected by the detecting sensor 40. In addition, In step S2, The stepping motor 32 is driven at a high speed in order to increase the throughput. here, Step S2 is the "second process". In step S3, The stepping motor 3 2 on the left side (hereinafter referred to as "one side") of the drawing in Fig. 1 is rotated forward. Until one of the detection sensors 40 becomes disconnected. In other words, Make one stepping motor 3 2 forward, Up to one end of the squeegee 91 (the left end of the squeegee 91 in Fig. 1 The same applies to the resistance received from the printing table 90 is not detected by one of the detecting sensors 40. -18 - 201139155 At this time, Adjust the bolt 3 3 forward, However, the squeegee 91 pushes the printing table 90 with a force equal to the resistance received from the printing table 9 Q. and so, §|J board 91, The adjustment block 35 or the like does not rise. Instead, the lower tube 30, Upper tube 31, Stepper motor 32, The connection block 20 and the like are lowered. the result, As shown in Figure 8, As shown in Figure 9, One of the detection sensors 4 turns off, One of the stepping motors 3 2 is stopped. In step S4, Reverse one stepping motor 32, The detection sensor 40 to the side becomes conductive. In other words, Make one stepping motor 32 forward, The resistance to the one end of the blade 91 from the printing table 90 is detected by the detection sensor 40 of the square. at this time, Adjust the bolt 3 3 reverse, However, the printing table 90 hinders the lowering of the squeegee 91, the adjustment block 35, and the like. Instead, The resistance received from the printing table 90 through the squeegee 9 1 causes the lower tube 3 〇, Upper tube 31, Stepper motor 32, The connection block 20 or the like rises. the result, As shown in Figure 6, As shown in Figure 7, One of the detection sensors 40 becomes conductive, One of the stepping motors 32 is stopped. here, Step S3, S4 is the "first adjustment step". In step S5, The stepping motor 32 on the right side of the drawing in the first drawing (hereinafter referred to as "the other side") is rotated forward. Until the other detection sensor 40 becomes off. which is, Rotating the other stepper motor 32 forward, Up to the other end of the squeegee 91 (the right end of the squeegee 91 in Fig. 1 The same applies below) The resistance received from the printing table 90 cannot be detected by the other detecting sensor 40. at this time, Adjust the bolt 3 3 forward, However, the squeegee 9 1 pushes the printing table 90 with a force equal to the resistance received from the printing table 90. and so, Scraper 91, Adjustment block 3 5 etc. does not rise. Instead, Lower tube 3 〇 -19 - 201139155 , Upper tube 31, Stepper motor 32, The connection block 20 and the like are lowered. The result is shown in Figure 8, Figure 9 is the same, The other detection sensor 40 is turned on, The other stepping motor 32 is stopped. In step S6, Reverse the other stepper motor 32, The detection sensor 40 to the other becomes conductive. In other words, Make the other step motor 32 forward, Until the other end of the squeegee 91 is resisted from the printing table 90, it is detected by the other detecting sensor 40. at this time, Adjust the plug 3 3 reverse, However, since the printing table 90 interferes with the lowering of the squeegee 91 and the adjustment block, Instead, The lower tube 30 is subjected to resistance from the printing table 90 through the squeegee 9 1 Upper tube 31, Stepper motor 32, The connection block 20 rises. result, With Figure 6, Figure 7 is the same, The other detector 40 becomes conductive, The other stepping motor 3 2 is stopped. here, Step S5, S6 is the "second adjustment step". and, In steps S3 to S6, in order to further ensure high-precision parallel adjustment of the squeegee 91, Low speed stepper motor 3 2. In step S7, It is checked whether or not the processing in steps S3 to S6 is performed a predetermined number of times. In the case where the prescribed number of times is too small, It will not be possible to ensure high precision for parallel adjustment of the squeegee. In the case where the prescribed number of times is excessive, Through management, it is low. According to experiments conducted by the inventors of the present invention, The specified number of times is 3 to 5 times. In this implementation mode, it is 3 times. When the steps S3 to S6 are performed a predetermined number of times (Y), the execution step S8 is performed. When there is no predetermined number of times (N), the process returns to step S3. here, Step S 3 ~ is the "third process". In step S8, the high-pressure gas is supplied through the vent ports from the cylinder rod side of the cylinders 14 of both sides (the lower oscillating step of the broken screw 35 is better than the S7 side -20-201139155). Both the lift adjustment mechanism 3 and the squeegee 91 are raised to a predetermined position. In other words, Lower tube 3〇 'Adjustment block 3 5' Scraper 9! The relative position of the equal rises to the specified position. the result, Become the i-th picture, The state shown in Figure 2, All processing ends. here, Step S8 is the "fourth process". Next, the relationship between the squeegee 9 1 and the printing table 90 in each step will be described using FIG. At the end of step S1, As shown in Figure 1 (1), The squeegee 9 1 has a gap L 1 with respect to the printing table 90 and is opposed to each other. At the end of step S 2, As shown in Figure 1 (2), The squeegee 91 is in close contact with the printing table 90, Both ends of the squeegee 9 1 receive a predetermined resistance from the printing table 90. and, At the end of step S3, As shown in Figure 1 (3), One end of the squeegee 91 is not subjected to a predetermined resistance from the printing table 90. In addition, In the picture, A state in which one end of the blade 91 is separated from the printing table 90 is shown for convenience. However, in actuality, one end of the squeegee 91 is in contact with the printing table 90. At the end of step S4, As shown in Fig. 10 (4), the end of the squeegee 91 is again tightly joined to the printing table 90. The end of the squeegee 91 is subjected to a predetermined resistance from the printing table 90. And 'at the end of step S5' as shown in Fig. 10 (5), The other end of the squeegee 9 1 is not subjected to a predetermined resistance from the printing table 90. In addition, In the figure, the gas which is separated from the printing table 90 by the other end of the squeegee 91 is shown for convenience. However, the other end of the squeegee 91 is in contact with the printing table 90. At the end of step s 6 as shown in Fig. 10 (6), The other end of the squeegee 91 is again in close contact with the printing table 90. The other end of the squeegee 9 1 receives a predetermined resistance from the printing table 90. and, Repeat steps S3 to S6 according to the specified number of times (different 1 〇 diagram (3) to 10th diagram (6-21-201139155)), The parallel adjustment of the squeegee 9 1 ends. During the parallel adjustment of the squeegee 9 1 The number of drive pulses of the two stepping motors 32 in each step is stored in a memory in a control device (not shown). and, The number of pulses inherent to the printed matter is added to the number of driving pulses, The number of correction pulses of the two stoppers and the detection error of the sensor 40 is obtained, and the result is obtained. The number of driving pulses of the two stepping motors 32 in the printing of the printed matter is calculated. As mentioned above, The reason why the predetermined number of steps S3 to S6 are repeated as described above will be described with reference to Fig. 1 . In Figure 11, 92a, 92b is a joint between both ends of the scraper 92 and the two lift adjustment mechanisms 3. In the step, The detection sensor 40 of one of the first becomes conductive. at this time, As indicated by the dotted line of 1st, One end of the squeegee 91 is tightly joined to the printing table 90' and one end of the plate 91 is subjected to the resistance specified by the printing table 90. Then, when the other detecting sensor 40 is turned on, the other end of the board 91 is in close contact with the printing table 90 as shown by the solid line in FIG. The other end of the squeegee 91 receives a predetermined resistance from the brush table 90. at this time, The squeegee frame 92 becomes a state of being rotated about the contact 9 2 a. The joint 9 2 a is separated from the end of the squeegee 91. Therefore, one end of the blade 91 is lowered by the amount of the distance L2. Actually, Since one end of the squeegee 91 cannot be lowered due to the presence of the printing table 90', it is further resistant to the falling distance L2. And 'under 30, Upper tube 31, Stepper motor 32, The connection block 20 and the like rise, Amount comparable to the increased resistance. Thus, in the case where the two detectors 40 are not turned on in the step S2, the adjustment of the blade 91 of the detection sensor 40 that is turned on first is offset, so that the predetermined number of times is repeated. 4 1 of the moving plate S2, the scraping of the scraping plate, and the steps S3 to S6 of the sensor side -22-201139155, The accuracy of the parallel adjustment of the squeegee 91 is improved. In the squeegee parallel adjustment device in the screen printing machine mentioned in the embodiment, The squeegee 9 1 transmits the resistance received from the printing table 90, A pair of lower tubes 30 and the like connected to both ends of the blade 91 are raised. and, The rise of the lower tube 30 can be detected by a pair of detecting sensors 40, The resistance received by the squeegee 9 1 from the printing table 90 is detected. therefore, As long as the position of the blade 9 1 is adjusted in accordance with the resistance detected by the pair of detecting sensors 40, The parallel adjustment of the squeegee 9 1 can be performed with high precision. and, In the squeegee leveling device 1, The detection object of the pair of stoppers 4 1 and the detecting sensor 40 is the rise of the lower tube 30, There is no need to provide additional parts for detecting the resistance of the squeegee 9 1 from the printing table 90, Therefore, the number of parts can be reduced. therefore, According to the squeegee parallel adjustment device, Parallel adjustment of the squeegee can be performed with high precision And it can make it cheap. In addition, In the squeegee parallel adjustment device, The adjustment block 35 is movably disposed downward in the axial direction in the lower tube 3〇, At the lower end of the adjustment block 35, the squeegee 9 1 is connected through the squeegee holder 92. and, An adjusting bolt 33 connected to a motor shaft of the stepping motor 32 fixed to the upper end of the upper tube 31, The bolt hole 35a of the adjusting block 35 is movably disposed in the axial direction, An adjustment nut 36 is fixed to the upper end of the adjustment block 35. The adjusting nut 36 is screwed to the adjusting bolt 3 3 , Therefore, the adjustment block 35 can be raised and lowered by causing the stepping motor 3 2 to rotate forward and backward. result, The squeegee 9 1 can be raised and lowered. In addition, After the squeegee 9 1 is in contact with the printing table 90, Even if the blade 91 is further lowered, It is also possible to hinder the lowering of the squeegee 91 and the adjustment block 35 by the printing table 90, Instead, the adjustment block 35 is raised by the resistance -23-201139155 received from the printing table 90. Therefore, as long as the rise of the adjustment block 35 is detected, It is possible to detect the resistance that the blade 9 1 receives from the printing table 90. and then, In this method of parallel adjustment of the squeegee, In the third process, After repeatedly repeating the predetermined number of times to raise one end of the squeegee 91, Step S3 of lowering one end of the squeegee 9 1 until receiving resistance from the printing table 90, S4, And step S5 of performing the same operation on the other end of the squeegee 91, S6, Therefore, the parallel adjustment of the squeegee 9 1 can be performed more accurately. 本 In the present embodiment, In the state where the two detecting sensors 4 are turned on, That is, both ends of the squeegee 9 1 are subjected to resistance from the printing table 90, The parallel adjustment of the squeegee 9 1 ends, However, it is also possible to detect that the sensor 40 is off in two states. That is, both ends of the squeegee 9 1 are not subjected to the resistance from the printing table 90, The parallel adjustment of the squeegee 91 is ended. The above has explained the embodiment of the squeegee parallel adjusting device and the squeegee parallel adjusting method in the screen printing machine of the present invention. However, the present invention is not limited to this, It is a matter of course that appropriate modifications can be made without departing from the technical idea of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front elevational view of a screen printing machine using the blade parallel adjusting device of the embodiment. Fig. 2 is a partially enlarged sectional view showing the squeegee parallel adjusting device mentioned in the embodiment. Fig. 3 is a flow chart showing a method of adjusting the squeegee parallel in the embodiment. -24- 201139155 The stomach 4 is the parallel adjustment device of the scraper mentioned in the embodiment, A partially enlarged cross-sectional view showing a state in which the blade is lowered to a predetermined position. The stomach 5 diagram represents the squeegee parallel adjustment device mentioned in the embodiment, A partially enlarged cross-sectional view showing a state in which the squeegee is brought into contact with the printing table by the reverse rotation of the drive motor. Figure 6 shows the squeegee parallel adjustment device mentioned in the embodiment, In order to pass the reversal of the drive motor, the squeegee is subjected to a partially enlarged cross-sectional view of the state of resistance from the printing table. Figure 7 shows the squeegee parallel adjustment device mentioned in the embodiment, It is an enlarged view of the detecting mechanism in Fig. 6. Figure 8 shows the squeegee parallel adjustment device mentioned in the embodiment, A partially enlarged cross-sectional view of the state in which the squeegee is removed from the resistance of the printing table by the forward and reverse rotation of the drive motor. Figure 9 shows the squeegee parallel adjustment device mentioned in the embodiment, It is an enlarged view of the detecting mechanism in Fig. 8. Figure 10 is a view showing a method of parallel adjustment of the squeegee mentioned in the embodiment, Is a simplified diagram showing the relationship between the squeegee and the printing table. Figure 11 is a view showing a method of parallel adjustment of the squeegee mentioned in the embodiment, This is a diagram showing the relationship between the squeegee and the printing table in detail. [Main component symbol description] 1 : Scraper parallel adjustment mechanism 3 : Lifting adjustment mechanism 30, 31: Adjustment tube (30: Lower tube, 31: Upper tube) -25- 201139155 3 2 : Drive motor (stepping motor) 3 3 : Adjustment bolt 3 5 : Adjustment block 3 5 a : Bolt hole 36 : Adjust the nut 2 : Lifting mechanism 10 : Reference board (upper board) 14 : Fluid cylinder (cylinder) 1 5 : Cylinder rod 2 0 : Connection block 4 : Detection mechanism 41 : Detection board (stop) 40 : Detection sensor 90: Printing station 9 1 : Scraper 92 : Scraper rack 5 1 : The first process S2: The second process S3~S7: The third process (S3, S4: First adjustment step S5, S6: Second adjustment step) S 8 : The fourth process -26-