1343434 九、發明說明： 【發明所屬之技術領域】 本發明係關於具備主進給齒輪與差動進給齒輪之縫紉 機之進給裝置。 【先前技術】 作爲該種縫紉機之進給裝置，在專利文獻1揭示一種進 給裝置’其具有與主軸連動進行搖動，以使主進給齒輪前後 移動的主進給軸；及與主軸連動進行搖動，以使差動進給齒 ® 輪前後移動的差動進給軸；且設置對從主軸朝向主進給軸進 行傳動之傳動機構調節主進給軸的搖動量，藉此以調節主進 給齒輪之進給量（以下，稱爲主進給量）的主進給調節機構： 並同時設置對從主進給軸朝向差動進給軸進行傳動之傳動 機構調節差動進給軸的搖動量，藉此以調節差動進給齒輪之 進給量（以下，稱爲差動進給量）的差動進給調節機構。 在該進給裝置中，當改變主進給量時，差動進給量也隨 之變化，無法達到不改變差動進給量而僅改變主進給量。另 ®外，當在將屬差動進給量與主進給量之比的差動比率，如設 定爲I以上，亦即設定差動進給量/主進給量> 1的狀態 下，若增加主進給量時，差動進給量也隨此增加，由此帶來 差動進給齒輪干涉到針板的進給齒輪用溝的溝端，因此無法 設定指定差動比。 在下述專利文獻2揭示之進給裝置中，主進給齒輪之前 後移動機構與差動進給齒輪之前後移動機構，分別具有進給 軸、固定安裝於該進給軸上之臂、被嵌接支撐於旋轉軸之偏 1343434 . 心體上的進給桿、及連接該進給桿與臂的連桿。 【專利文獻1】日本特開2002-239276號 【專利文獻2】日本特公昭56_1丨18號 【發明內容】 (發明所欲解決之問題） 在專利文獻2揭示之進給裝置中，主進給齒輪之前後移 動機構與差動進給齒輪之前後移動機構，分別具有偏心體， 但該偏心體分別個別地設於主進給齒輪之前後移動機構與 •差動進給齒輪之前後移動機構。 另外，在上述習知進給裝置中，主進給量之調節與差動 進給量之調節係在個別的處所進行。 本發明之主要目的在於，提供一種共同形成主進給齒輪 之前後移動機構與差動進給齒輪之前後移動機構之偏心 體，以使構造簡化而將裝置小型化的縫紉機之進給裝置：其 另一目的在於，提供一種在一處進行主進給量與差動進給量 之調節的縫紉機之進給裝置 •(解決問題之手段） 申請專利範圍第1項之發明，係一種裝置具有固定安裝 主進給齒輪之主進給台，乃並排設於該主進給台且固定安裝 差動進給齒輪之差勖進給台，與主軸連動以使上記兩進給台 共同上下移動的上下移動機構，與主軸連動以使主進給台前 後移動的主進給台用的前後移動機構，及同樣與主軸連動以 使差動進給台前後移動的差動進給台用的前後移動機構。而 主進給台用的前後移動機構與差動進給台用的前後移動機 1343434 ，構，分別具有進給軸，及固定安裝於該進給軸上之臂’及被 嵌接支撐於該主軸之偏心部上的進給桿’及連接該臂與進給 桿的第1連桿。而且上述主進給台用的前後移動機構與差動 進給台用的前後移動機構，分別設置調節主進給台與差動進 給台之前後移動量用的進給量調節機構之縫紉機之進給裝 置，其特徵爲：將主進給台用前後移動機構之進給桿與差動 進給台用前後移動機構之進給桿，共同嵌接於主軸的相同偏 心部上。 • 申請專利範圍第2項之發明，係一種裝置具有固定安裝 主進給齒輪之主進給台，及並排設於該主進給台且固定安裝 差動進給齒輪之差動進給台，及與主軸連動以使上記兩進給 台共同上下移動的上下移動機構，及與主軸連動以使主進給 台前後移動的主進給台用的前後移動機構，及同樣與主軸連 動以使差動進給台前後移動的差動進給台用的前後移動機 構。而主進給台用的前後移動機構與差動進給台用的前後移 動機構’分別具有進給軸，固定安裝於該進給軸上之臂，乃 鲁嵌接支撐於該主軸之偏心部上的進給桿，及連接該臂與進給 桿的第1連桿。而且上述主進給台用的前後移動機構與差動 進給台用的前後移動機構，分別設置調節主進給台與差動進 給台之前後移動量用的進給量調節機構之縫紉機之進給裝 置’其特徵爲：調節主進給台之前後移動量用的進給量調節 機構具有第1調節軸’調節差動進給台之前後移動量用的進 給量調節機構具有第2調節軸，第丨及第2調節軸係形成爲 使一方的調節軸成爲筒狀且嵌插於另一方的調節軸的二重 1343434 、 軸構造，並於各調節軸上分別連結手動操作手段，藉由該手 動操作手段的操作以使第1或第2的調節軸轉動而用以調節 主進給台或差動進給台之前後移動量。 其中，手動操作手段如可使用刻度盤、操縱桿等。 申請專利範圍第3項之發明’係於申請專利範圍第2項 之發明中，其特徵爲：一端與固定安裝於第1或第2調節軸 上之操縱桿軸接的第2連桿的另一端與上述臂，係以同軸與 第1連桿軸接。 ί 申請專利範圍第4項之發明，係於申請專利範圍第3項 之發明中，其特徵爲··手動操作手段的差動進給操縱桿係固 定安裝於第2調節軸上，該差動進給操縱桿係可藉由第1固 定螺絲而可調整位置地固定於手動操作手段之主進給操縱 桿上，該主進給操縱桿係固定安裝於第1調節軸上。 申請專利範圍第5項之發明，係於申請專利範圍第4項 之發明中，其特徵爲：主進給操縱桿係可通過第2固定螺絲 而可調整位置地固定於縫紉機之機殼上。 ♦(發明效果） 根據申請專利範圍第1項之發明，可個別地調節主進給 量及差動進給量，可不改變差動進給量而僅僅改變主進給 量，因此可獲得藉由在設定差動比率的狀態來改變主進給量 或差動進給量，以消除差動進給齒輪或主進給齒輪干涉到針 板的進給齒輪用溝的溝端的問題，以及主進給齒輪之前後移 動機構與差動進給齒輪之前後移動機構，將其進給桿分別嵌 接於相同偏心部，以便共同使用偏心部而達成構造簡單、裝 1343434 ， 第1圖爲從前面所視縫紉機之進給裝置的立體圖’第2 圖爲從背面所視同進給裝置的立體圖。 固定安裝主進給齒輪1之主進給台2及固定安裝差動進 給齒輪3之差動進給台4，係左右並排設置，各進給台2、4 分別前後形成爲分叉狀。在各進給台2、4後側之分叉2a、 4a上安裝有可前後方向滑動的角形擋塊6,該角形擋塊6係 由主軸5端部之偏心銷（未圖示）軸支爲可作旋轉，另外，在 各進給台2、4前側之分叉2b、4b上安裝有可滑動的角形擋 • 塊Π，該角形擋塊Π係由突出於上下進給軸7端部之臂8 側面的曲柄銷（未圖示）軸支爲可作旋轉》 上述上下進給軸7係與主軸5平行，固定安裝於上下進 給軸7上之臂9與嵌接支撐於主軸5之偏心體（未圖示）上的 上下進給桿1 2連結，藉以使上下進給軸7與主軸5之旋轉 連動而搖動。如此般，安裝於兩進給台2、4前後側之分叉 2a、4a與2b、4b的角形擋塊6、，係形成爲藉由主軸5 之旋轉及與主軸5連動之上下進給軸7的搖動以使兩進給台 鲁2、4上下移動’於是由上述主軸5、藉由主軸5之旋轉而介 由上下進給桿12及臂9進行搖動的上下進給軸7、及安裝於 兩進給台2、4前後側之分叉2a'4a與2b、4b的角形檔塊6、 11等構成主進給台2及差動進給台4之上下移動機構。 其次，說明上述主進給台2及差動進給台4之前後移動 機構。 主進給台2之前後移動機構具有與主軸5平行的主前後 進給軸14，主軸5與主前後進給軸14，如第3圖及第*圖 1343434 ， 主進給量之調節係在鬆解後述之附段落螺絲5 5以使調 節螺母55a鬆開的狀態下，藉由沿外圓弧溝36操作調節螺 母38來進行。亦即’當沿外圓弧溝36移動調節螺母38時， 第1調節軸22與主進給操縱桿3 1 —起轉動，以使屬連桿 21之支點的銷24的位置移動於以第！調節軸22爲曲率中心 的圓弧上。藉此’由偏心體15之旋轉所搖動的第2連桿21 的搖動範圍發生變化，並根據該連桿21的搖動範圍的變化， 使得臂1 7與主前後進給軸]4的搖動範圍變化。於是，根據 #該主前後進給軸1 4的搖動範圍的變化，使得主進給台2之 前後移動量變化。 差動進給台4之前後移動機構具有與主軸5平行的差動 前後進給軸4 1，主軸5與差動前後進給軸41，如第3圖及 第7圖所示’係由與主進給桿16並排而被固裝於主軸5之 偏心體1 5所嵌接支撐的差動進給桿42、固定安裝於差動前 後進給軸41上之臂43、及連結差動進給桿42與臂43之第 1連桿44組成的連桿機構所連結，另外，在軸接差動進給桿 鲁42與第1連桿44之銷45上還軸接第2連桿46，而固定安 裝於第2調節軸47上的操縱桿48及第2連桿46，係由銷 49軸接，而第2調節軸47係可轉動地嵌插於筒狀第1調節 軸22上，形成爲二重軸構造。又，兩進給桿16、42係配置 於由縫紉機機殼所支撐的軸套5a與固定安裝於主軸5上的 平衡器5b之間，由主軸5支撐爲可旋轉的墊圈5c，係配置 於主進給桿1 6與軸套5 a之間。藉此，嵌合於單一偏心體1 5 之兩進給桿16、42的圓筒部，係於主軸5的軸方向上’在 1343434 * 墊圈5c與平衡器5b之間被導引及支撐。另外，藉由此種構 成，變得容易從主軸5插入或抽出於兩進給桿I 6、42的圓 筒部，可迅速進行縫紉機之組裝及拆解，同時不需設爲將各 圓筒部分割的構造，致使加工成本變得便宜。 在上記差動前後進給軸4 1上，如第1圖及第2圖所示， 還於其軸端固定安裝著臂51，該臂51係介由連桿52連結於 差動進給台4。 差動進給台4之則後移動機構’係如上述般構成，當偏 ® 心體15旋轉時，第2連桿46以銷49爲支點邊搖動邊使臂 43與差動進給軸41—起搖動，藉以使臂51也一起搖動，進 而使差動進給台4前後移動。 在與操縱桿48及第2連桿46 —起構成差動進給量之調 節機構的第2調節軸47上，如第5圖及第6圖所示，比第1 調節軸22突出之軸端上固定安裝著差動進給操縱桿54。 附段落螺絲5 5係插穿於差動進給操縱桿54端部，從差 動進給操縱桿54突出之附段落螺絲55的前端部，邊由主進 •給操縱桿3 1之圓弧溝30所導引邊被調節螺母55a(第1螺 絲）所固定’在附段落螺絲55與調節螺母55a作夾緊時，將 主進給操縱桿3 1與差動進給操縱桿54固定，當鬆開附段 落螺絲5 5以解除對主進給操縱桿3丨的固定時，則差動進 給操縱桿54形成爲可相對主進給操縱桿3 1作旋轉。調節 螺母55a與差動進給操縱桿54構成第2調節軸47之手動操 作手段。 差動進給量之調節係在鬆開附段落螺絲5 5以解除對主 -14- 1343434 * 進給操縱桿31的固定的狀態下，藉由沿內圓弧溝3 5操作 附階梯螺絲5 5來進行。亦即，當沿顯示板3 4之內圓弧溝3 5 及主進給操縱桿3 1之圓弧溝3 〇移動附段落螺絲5 5時，第 2調節軸47與差動進給操縱桿54 —起轉動，以使上記第2 連桿46之搖動支點亦即銷49移動於以第2調節軸47爲曲 率中心的圓弧上。藉此，由偏心體15之旋轉所搖動的第2 連桿46的搖動範圍發生變化，根據該連桿46的搖動範圍的 變化’使得臂4 3與差動前後進給軸41的搖動範圍產生變 •化。於是’根據該差動前後進給軸41的搖動範圍的變化， 使得差動進給台4之前後移動量變化。 在鬆開調節螺母3 8與附段落螺絲5 5的狀態下，如上 述’主進給操縱桿3 1與差動進給操縱桿5 4，可分別單獨進 行旋轉操作’可單獨調節主進給量及差動進給量，但在附段 落螺絲5 5與調節螺母5 5 a作夾緊之狀態下，差動進給操縱 桿5 4則固定於主進給操縱桿3 1上，若操作調節螺母3 8 時，差動進給操縱桿5 4與主進給操縱桿31同時轉動，以 •使主進給量及差動進給量變化。 第8圖及第9圖顯示手動操作手段的另一例，在由底座 B下之筒狀第1調節軸22所固裝且橫向延長之主進給操縱 桿ό 1上’形成有內外周以第1調節軸22爲中心的圓弧溝 62、63 ’主進給操縱桿6 1，係將較該操縱桿6 1突出的指針 64延伸至固定安裝於縫紉機機殼65之顯示板66的背面側， 固定於指針64之附段落螺絲6 1 a，係通過形成於顯示板66 上的圓弧溝67 ’藉由旋入附段落螺絲6 1 a之調節螺母68的 1343434 . 旋入而固定於顯示板66上，另一方面，藉由鬆開作爲第2 固定螺絲的調節螺母68，即形成爲可與第1調節軸22 —起 轉動。 固裝在嵌插於第1調節軸22之第2調節軸47上的差動 進給操縱桿6 9，係通過圓弧孔6 2後被折彎，其一側位於主 進給操縱桿61之表面側，而另一側則伸至主進給操縱桿6】 的背面側’固定於另一側之附段落螺絲69a，係通過圓弧溝 63’藉由旋入差動進給操縱桿69之作爲第1螺絲之調節螺 #母71的旋入而固定於主進給操縱桿61上，另一方面，藉由 鬆開調節螺母7 1 ’即形成爲可使差動進給操縱桿69單獨與 第2調節軸47 —起轉動。 在差動進給操縱桿69上，且在包夾第2調節軸47之相 反側突設有止動部72，在縫紉機機殼65上，在止動部72 的兩側配置有限制止動部7 2的活動範疇的止動銷7 3。圖 中，F爲布進給方向，下圖亦相同。 在上述實施形態之手動操作手段中，調節螺母3 8、6 8、 # 7 1係配置於縫紉機側面之第1及第2調節軸2 2、4 7的單側， 亦即偏向配置於第1及第2調節軸22、47的眼前或後方， 但可將調節螺母3 8、68、7 1之一部分或全部配置於縫紉機 前面側，也可將調節螺母3 8、6 8、7 1配置於第1及第2調 節軸2 2、4 7的兩側。 第1 0圖所示實施形態，係將主進給操縱桿75及差動進 給操縱桿76共同折彎成直角，且由縫紉機側面彎向縫紉機 前面，藉由安裝於主進給操縱桿75前面側之調節螺母77的 -16- 1343434 k旋入’將主進給操縱桿75固定於縫紉機機殻上，另一方面 藉由鬆弛作爲第2固定螺絲的調節螺母7 7，以使其沿縱孔 78移動’而將主進給操縱桿75形成爲可繞第1調節軸22 的周圍轉動。另外’藉由通過形成於差動進給操縱桿76前 面側之縱孔7 9而旋入主進給操縱桿7 5之作爲第1固定螺絲 的調節螺母81的旋入’將差動進給操縱桿76固定於主進給 操縱桿7 5上，另一方面，當鬆弛調節螺母8丨時，差動進給 操縱桿7 6即可單獨轉動。圖中，8 2爲顯示進給量之刻度。 # 第1丨圖顯示取代將顯示刻度之縱孔形成於差動進給操 縱桿而改爲形成於主進給操縱桿上的例子。亦即，在主進給 操縱桿84上形成表示刻度85的縱孔86,藉由旋入差動進給 操縱桿8 7之作爲第1固定螺絲的調節螺母8 8的旋入，將差 動進給操縱桿8 7固定於主進給操縱桿84上，另一方面，藉 由鬆驰調節螺母88，使其沿縱孔移動，即可使差動進給 操縱桿87單獨轉動。圖中，89爲將主進給操縱桿84固定於 縫紉機機殼上用之作爲第2固定螺絲的調節螺母。 Φ 在上述各實施形態之手動操作手段中，顯示將操作主進 給操縱桿31、61、75及84之調節螺母38、68、77及89， 以及操作差動進給操縱桿54、69、76及87之調節螺母71、 8 1及8 8 ’均配置於縫紉機側面或縫紉機前面之單側的例子， 但也可將設於主進給操縱桿之調節螺母與設於差動進給操 縱桿之調節螺母中’其中一者設於縫紉機側面，而將另一者 設於縫紉機前面側。 第1 2圖爲顯示將主進給操縱桿9 1之一端折彎向縫紉機 1343434 • 前面側，在該被折彎部分安裝作爲第2固定螺絲的調節螺母 92，同時並將安裝於差動進給操縱桿93之作爲第1固定螺 絲的調節螺母94配置於縫紉機側面側者，第丨3圖如第i 2 圖所示，將圓弧溝95安裝於差動進給操縱桿者，亦即，顯 示在差動進給操縱桿97上形成圓弧溝98的例子^ 在上述各實施形態之手動操作手段中，均顯示將設於主 進給操縱桿之作爲第2固定螺絲的調節螺母，以及設於差動 進給操縱桿之作爲第1固定螺絲之調節螺母，設於第〗及第 鲁2調節軸的單側的例子，但是第1 4圖所示例子中，係將固定 主進給操縱桿1 0 1之調節螺母1 0 2與將差動進給操縱桿I 〇 3 固定於主進給操縱桿1 Ο I上之調節螺母1 〇4，設於調節軸之 兩側。圖中，點劃線顯示調節軸之軸線。第i 〇〜1 3圖中也 同樣以鏈線顯示調節軸之軸線。 【圖式簡單說明】 第1圖爲從前面所視本發明之縫紉機之進給裝置的立體 圖。 ^ 第2圖爲從背面所視同進給裝置的立體圖。 第3圖爲同進給裝置主要構成部分的局部剖面前視圖。 第4圖爲顯示主進給台之前後移動機構的側視圖。 第5圖爲調節進給量之手動操作手段與該關聯構件的分 解立體圖。 第6圖爲同剖面圖。 第7圖爲顯示差動進給台之前後移動機構的側視圖。 第8圖爲調節進給齒輪之手動操作手段的側視圖。 1343434 . 第9圖爲第8圖所示手動操作手段的剖面圖。 第10圖爲顯示手動操作手段之另一例的立體圖。 第Π圖爲顯示手動操作手段之又一例的立體圖。 第12圖爲顯示手動操作手段之再一例的立體圖。 第13圖爲顯示手動操作手段之再一例的立體圖。 第14圖爲顯示手動操作手段之再一例的立體圖。 【元件符號說明】 1 主進給齒輪 φ 2 主進給台 2a' 4a 分叉 2b、4b 分叉 3 差動進給齒輪 4 差動進給台 5 主軸 a 軸套 5b1343434 IX. Description of the Invention: TECHNICAL FIELD The present invention relates to a feeding device for a sewing machine having a main feed gear and a differential feed gear. [Prior Art] As a feeding device for such a sewing machine, Patent Document 1 discloses a feeding device that has a main feed shaft that is rocked in conjunction with a main shaft to move the main feed gear back and forth, and is interlocked with the main shaft. a differential feed shaft that is moved to move the differential feed tooth® wheel forward and backward; and a cranking amount that adjusts the main feed shaft for a transmission mechanism that transmits from the main shaft toward the main feed axis, thereby adjusting the main feed The main feed adjustment mechanism for the feed amount of the gear (hereinafter referred to as the main feed amount): and at the same time, the differential feed shaft for adjusting the transmission mechanism from the main feed shaft to the differential feed shaft is set. The amount of shaking is thereby used to adjust the differential feed adjustment mechanism of the feed amount of the differential feed gear (hereinafter referred to as the differential feed amount). In the feed device, when the main feed amount is changed, the differential feed amount also changes, and it is impossible to change the main feed amount without changing the differential feed amount. In addition, when the differential ratio of the ratio of the differential feed amount to the main feed amount is set to be I or more, that is, the differential feed amount/main feed amount > When the main feed amount is increased, the differential feed amount is also increased accordingly, whereby the differential feed gear interferes with the groove end of the feed gear groove of the needle plate, and thus the specified differential ratio cannot be set. In the feeding device disclosed in Patent Document 2, the front feed mechanism and the differential feed gear before and after the main feed gear have a feed shaft, an arm fixedly mounted on the feed shaft, and are embedded. The support rod is supported on the rotating shaft 1343434. The feed rod on the core body and the connecting rod connecting the feed rod and the arm. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2002-239276 [Patent Document 2] Japanese Patent Publication No. SHO 56 No. 18 (Consultation) (Problem to be Solved by the Invention) In the feeding device disclosed in Patent Document 2, the main feed The front and rear moving mechanisms of the gears and the differential feed gears have an eccentric body, respectively, but the eccentric bodies are respectively disposed before the main feed gear and then the moving mechanism and the differential feed gear before and after the moving mechanism. Further, in the above conventional feeding device, the adjustment of the main feed amount and the adjustment of the differential feed amount are performed in individual places. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a sewing machine feed device which can form a eccentric body of a rear moving mechanism before and after a main feed gear and a differential feed gear to simplify the structure and miniaturize the device: Another object of the invention is to provide a feeding device for a sewing machine that performs adjustment of a main feed amount and a differential feed amount at one place. (A means for solving the problem) Patent Application No. 1 is an apparatus having a fixed The main feed table for installing the main feed gear is disposed on the main feed table and fixedly mounted on the differential feed table of the differential feed gear, and is interlocked with the main shaft to move the upper and lower feed tables together up and down a moving mechanism, a front and rear moving mechanism for a main feed table that moves in conjunction with the main shaft to move the main feed table forward and backward, and a front and rear moving mechanism for a differential feed table that is also interlocked with the main shaft to move the differential feed table back and forth . And the front and rear moving mechanism for the main feed table and the front and rear moving machine 1343434 for the differential feed table respectively have a feed shaft, and an arm fixedly mounted on the feed shaft and is supported by the arm a feed rod ' on the eccentric portion of the main shaft and a first link connecting the arm and the feed rod. Further, the front and rear moving mechanism for the main feed table and the front and rear moving mechanism for the differential feed table are respectively provided with a sewing machine for adjusting the feed amount adjusting mechanism for the movement amount before and after the main feed table and the differential feed table. The feeding device is characterized in that the feeding rod of the front and rear moving mechanism of the main feeding table and the feeding rod of the front and rear moving mechanism of the differential feeding table are commonly engaged on the same eccentric portion of the main shaft. • The invention of claim 2 is a main feed table having a fixed installation main feed gear, and a differential feed table arranged side by side on the main feed table and fixedly mounted with a differential feed gear. And a vertical movement mechanism that moves in conjunction with the main shaft to move the two feed tables together, and a front and rear moving mechanism for the main feed table that moves in conjunction with the main shaft to move the main feed table forward and backward, and also interlocks with the main shaft to make the difference The front and rear moving mechanism for the differential feed table that moves forward and backward of the moving table. The front and rear moving mechanism for the main feed table and the front and rear moving mechanism for the differential feed table respectively have a feed axis, and the arm fixedly mounted on the feed shaft is supported by the eccentric portion of the main shaft. The upper feed rod and the first link connecting the arm and the feed rod. Further, the front and rear moving mechanism for the main feed table and the front and rear moving mechanism for the differential feed table are respectively provided with a sewing machine for adjusting the feed amount adjusting mechanism for the movement amount before and after the main feed table and the differential feed table. The feed device' is characterized in that the feed amount adjustment mechanism for adjusting the amount of movement before and after the main feed table has the first adjustment shaft 'the feed amount adjustment mechanism for adjusting the differential feed stage before and after the movement amount has the second The adjustment shaft, the second adjustment shaft and the second adjustment shaft are formed as a double 1343434 and a shaft structure in which one adjustment shaft is formed into a cylindrical shape and inserted into the other adjustment shaft, and manual operation means are respectively connected to each adjustment shaft. The first or second adjustment shaft is rotated by the operation of the manual operation means for adjusting the amount of movement before and after the main feed stage or the differential feed stage. Among them, a manual operation means such as a dial, a joystick, or the like can be used. The invention of claim 3 is in the invention of claim 2, characterized in that: one end of the second link that is axially coupled to the lever fixedly mounted on the first or second adjustment shaft One end and the above arm are coaxially coupled to the first link. The invention of claim 4 is the invention of claim 3, characterized in that the differential feed lever of the manual operation means is fixedly mounted on the second adjustment shaft, the differential The feed lever is fixed to the main feed lever of the manual operation means by a first fixing screw, and the main feed lever is fixedly attached to the first adjustment shaft. The invention of claim 5 is the invention of claim 4, wherein the main feed lever is detachably fixed to the casing of the sewing machine by the second fixing screw. ♦ (Effect of the invention) According to the invention of claim 1 of the patent application, the main feed amount and the differential feed amount can be individually adjusted, and the main feed amount can be changed without changing the differential feed amount, thereby obtaining The main feed amount or the differential feed amount is changed in a state in which the differential ratio is set to eliminate the problem that the differential feed gear or the main feed gear interferes with the groove end of the feed gear groove of the needle plate, and the main feed Before the gear moves the mechanism and the differential feed gear before and after the moving mechanism, the feed rods are respectively engaged in the same eccentric portion, so that the eccentric portion is used together to achieve a simple structure, and the 1343434 is installed, and the first picture is from the front. Fig. 2 is a perspective view of the feed device as viewed from the back side. The main feed table 2 to which the main feed gear 1 is fixedly mounted and the differential feed table 4 to which the differential feed gear 3 is fixedly mounted are arranged side by side, and each of the feed tables 2 and 4 is formed in a forked shape. An angular stopper 6 slidable in the front-rear direction is attached to the forks 2a, 4a on the rear sides of the respective feed tables 2, 4, and the angular stopper 6 is pivoted by an eccentric pin (not shown) at the end of the spindle 5. In order to be rotatable, in addition, a slidable angular block block 安装 is attached to the forks 2b, 4b on the front side of each of the feed tables 2, 4, and the angled block is protruded from the end of the upper and lower feed shafts 7 The crank pin (not shown) on the side of the arm 8 is rotatable. The upper and lower feed shafts 7 are parallel to the main shaft 5, and the arm 9 fixedly mounted on the upper and lower feed shafts 7 is supported by the main shaft 5 The upper and lower feed rods 1 2 on the eccentric body (not shown) are coupled to each other, whereby the upper and lower feed shafts 7 are rocked in conjunction with the rotation of the main shaft 5. Thus, the angular stoppers 6 of the forks 2a, 4a and 2b, 4b attached to the front and rear sides of the two feed tables 2, 4 are formed by the rotation of the main shaft 5 and the upper and lower feed axes in conjunction with the main shaft 5. 7 is shaken to move the two feeds 2, 4 up and down. Then the upper and lower feed shafts 7, which are rocked by the upper and lower feed rods 12 and 9 by the spindle 5, and the rotation of the spindle 5, and the mounting The angular blocks 6, 11 and the like of the forks 2a'4a and 2b, 4b on the front and rear sides of the two feed stations 2, 4 constitute the upper and lower moving mechanisms of the main feed table 2 and the differential feed table 4. Next, the front and rear moving mechanisms of the main feed table 2 and the differential feed table 4 will be described. Before and after the main feed table 2, the moving mechanism has a main front and rear feed shaft 14 parallel to the main shaft 5, the main shaft 5 and the main front and rear feed shaft 14, as shown in Fig. 3 and Fig. 1343434, the adjustment of the main feed amount is The attachment screw 5 5, which will be described later, is released by operating the adjustment nut 38 along the outer circular arc groove 36 in a state where the adjustment nut 55a is released. That is, when the adjustment nut 38 is moved along the outer circular arc groove 36, the first adjustment shaft 22 rotates together with the main feed lever 3 1 to move the position of the pin 24 of the fulcrum of the link 21 to ! The adjustment shaft 22 is on an arc of the center of curvature. Thereby, the swing range of the second link 21 that is rocked by the rotation of the eccentric body 15 changes, and the swing range of the arm 17 and the main front and rear feed axis 4 is changed according to the change of the swing range of the link 21. Variety. Then, the amount of movement of the main feed table 2 is changed in accordance with the change in the swing range of the main front feed axis 14 . Before and after the differential feed table 4, the moving mechanism has a differential front and rear feed shaft 4 parallel to the main shaft 5, and a main shaft 5 and a differential front and rear feed shaft 41, as shown in Figs. 3 and 7 The main feed rod 16 is arranged side by side and is fixed to the differential feed rod 42 which is supported by the eccentric body 15 of the main shaft 5, the arm 43 fixedly mounted on the differential front and rear feed shaft 41, and the connection differential The lever 42 is coupled to the link mechanism of the first link 44 of the arm 43, and the second link 46 is further coupled to the pin 45 of the differential feed lever 42 and the first link 44. The lever 48 and the second link 46 fixedly mounted on the second adjustment shaft 47 are pivotally connected by the pin 49, and the second adjustment shaft 47 is rotatably inserted into the cylindrical first adjustment shaft 22. Formed as a double shaft structure. Further, the two feed rods 16 and 42 are disposed between the boss 5a supported by the sewing machine casing and the balancer 5b fixedly attached to the main shaft 5, and are supported by the main shaft 5 as a rotatable washer 5c. Between the main feed rod 16 and the sleeve 5a. Thereby, the cylindrical portion of the two feed rods 16, 42 fitted to the single eccentric body 15 is guided and supported between the washer 5c and the balancer 5b in the axial direction of the main shaft 5'. Further, with such a configuration, it is easy to insert or withdraw the cylindrical portion of the two feed rods I 6 and 42 from the main shaft 5, and the sewing machine can be quickly assembled and disassembled without setting the respective cylinders. The divisional structure makes the processing cost cheaper. On the differential front and rear feed shafts 41, as shown in Figs. 1 and 2, an arm 51 is fixedly attached to the shaft end thereof, and the arm 51 is coupled to the differential feed table via a link 52. 4. The rear moving mechanism 4 of the differential feed table 4 is configured as described above. When the biasing body 15 is rotated, the second link 46 swings with the pin 49 as a fulcrum to move the arm 43 and the differential feed shaft 41. - Shake, whereby the arms 51 are also shaken together, thereby moving the differential feed table 4 back and forth. The second adjustment shaft 47 that constitutes the differential feed amount adjustment mechanism together with the joystick 48 and the second link 46 is a shaft that protrudes from the first adjustment shaft 22 as shown in FIGS. 5 and 6 A differential feed lever 54 is fixedly mounted on the end. The attachment screw 5 5 is inserted through the end of the differential feed lever 54 , and the front end portion of the attachment screw 55 protruding from the differential feed lever 54 is edged by the main feed and the joystick 3 1 The leading edge of the groove 30 is fixed by the adjusting nut 55a (the first screw). When the attachment screw 55 and the adjusting nut 55a are clamped, the main feed lever 3 1 and the differential feed lever 54 are fixed. When the attachment screw 5 5 is released to release the fixing of the main feed lever 3, the differential feed lever 54 is formed to be rotatable relative to the main feed lever 31. The adjustment nut 55a and the differential feed lever 54 constitute a manual operation means for the second adjustment shaft 47. The adjustment of the differential feed amount is performed by loosening the attachment screw 5 5 to release the fixing of the main-14-1343434 * feed lever 31, by operating the stepped screw 5 along the inner circular groove 3 5 5 to carry out. That is, when the attachment screw 5 5 is moved along the circular arc groove 3 5 of the display panel 34 and the circular arc groove 3 主 of the main feed lever 3 1 , the second adjustment shaft 47 and the differential feed lever 54 is rotated so that the rocking fulcrum of the second link 46, that is, the pin 49, is moved on an arc having the second adjustment shaft 47 as the center of curvature. Thereby, the swing range of the second link 46 that is swung by the rotation of the eccentric body 15 changes, and the swing range of the arm 43 and the differential front and rear feed shaft 41 is generated according to the change of the swing range of the link 46. Variety. Then, the amount of movement of the differential feed table 4 before and after the differential feed table 4 is changed in accordance with the change in the panning range of the differential feed axis 41. In the state in which the adjusting nut 38 and the attached screw 5 5 are loosened, as described above, the "main feed lever 3 1 and the differential feed lever 5 4 can be individually rotated", and the main feed can be individually adjusted. The amount and the differential feed amount, but in the state where the attachment screw 5 5 and the adjustment nut 5 5 a are clamped, the differential feed lever 5 4 is fixed to the main feed lever 3 1 if the operation When the nut 3 8 is adjusted, the differential feed lever 54 and the main feed lever 31 are simultaneously rotated to change the main feed amount and the differential feed amount. Figs. 8 and 9 show another example of the manual operation means, in which the inner and outer circumferences are formed on the main feed lever ό 1 which is fixed by the cylindrical first adjustment shaft 22 under the base B and which is laterally extended. 1 The circular arc groove 62, 63' of the adjustment shaft 22 is the main feed lever 61, and the pointer 64 protruding from the lever 61 is extended to the back side of the display panel 66 fixedly mounted to the sewing machine casing 65. The attachment screw 6 1 a fixed to the pointer 64 is fixed by the circular arc groove 67' formed on the display panel 66 by screwing in the 1343434 of the adjustment nut 68 of the attachment screw 6 1 a. On the other hand, the plate 66 is formed to be rotatable together with the first adjustment shaft 22 by loosening the adjustment nut 68 as the second fixing screw. The differential feed lever 6 9 fixed to the second adjustment shaft 47 of the first adjustment shaft 22 is bent by the circular arc hole 6 2 , and one side thereof is located at the main feed lever 61 . On the surface side, the other side extends to the back side of the main feed lever 6]. The attachment screw 69a is fixed to the other side, and the differential feed lever is screwed in through the circular groove 63'. 69 is fixed to the main feed lever 61 as the adjustment screw #1 of the first screw. On the other hand, the adjustment nut 7 1 ' is loosened to form the differential feed lever. 69 is rotated separately with the second adjustment shaft 47. A stopper portion 72 is protruded from the differential feed lever 69 on the opposite side of the second adjustment shaft 47, and a restriction stopper is disposed on both sides of the stopper portion 72 on the sewing machine casing 65. 7 2 of the activity category of the stop pin 7 3 . In the figure, F is the feed direction of the cloth, and the figure below is also the same. In the manual operation device of the above-described embodiment, the adjustment nuts 38, 68, and #7 1 are disposed on one side of the first and second adjustment shafts 2 2, 4 7 on the side surface of the sewing machine, that is, the deflection is disposed on the first side. And the front or rear of the second adjustment shafts 22, 47, but some or all of the adjustment nuts 38, 68, and 71 may be disposed on the front side of the sewing machine, or the adjustment nuts 38, 68, and 7 may be disposed on the front side. The first and second adjustment axes 2, 4 7 are on both sides. In the embodiment shown in FIG. 10, the main feed lever 75 and the differential feed lever 76 are bent at right angles, and the side of the sewing machine is bent toward the front of the sewing machine by being attached to the main feed lever 75. The -1 - 1343434 k of the adjusting nut 77 on the front side is screwed in 'fixing the main feed lever 75 to the sewing machine casing, and on the other hand by loosening the adjusting nut 7 7 as the second fixing screw The vertical hole 78 is moved 'the main feed lever 75 is formed to be rotatable around the circumference of the first adjustment shaft 22. Further, 'the screwing in the adjusting nut 81 as the first fixing screw that is screwed into the main feed lever 75 by the vertical hole 7 formed on the front side of the differential feed lever 76 will advance the differential feed The lever 76 is fixed to the main feed lever 75. On the other hand, when the adjustment nut 8 is loosened, the differential feed lever 76 can be rotated separately. In the figure, 8 2 is the scale showing the feed rate. # 图 图 图 shows an example in which the vertical hole that displays the scale is formed on the differential feed lever instead of being formed on the main feed lever. That is, a vertical hole 86 indicating the scale 85 is formed on the main feed lever 84, and the screwing of the adjusting nut 8 8 as the first fixing screw screwed into the differential feed lever 87 will be differential. The feed lever 87 is fixed to the main feed lever 84, and on the other hand, the differential feed lever 87 is individually rotated by loosening the adjustment nut 88 to move it along the vertical hole. In the figure, 89 is an adjusting nut for fixing the main feed lever 84 to the sewing machine casing as the second fixing screw. Φ In the manual operation means of each of the above embodiments, the adjustment nuts 38, 68, 77, and 89 that operate the main feed levers 31, 61, 75, and 84, and the differential feed levers 54, 69 are operated. The adjustment nuts 71, 8 1 and 8 8 ' of 76 and 87 are all arranged on the side of the sewing machine or on one side of the front of the sewing machine, but the adjusting nut provided on the main feed lever and the differential feed operation can also be provided. One of the rod adjustment nuts is provided on the side of the sewing machine, and the other is placed on the front side of the sewing machine. Fig. 1 is a view showing that one end of the main feed lever 91 is bent toward the sewing machine 1343434. • The front side is provided with an adjusting nut 92 as a second fixing screw at the bent portion, and is mounted in the differential feed. The adjusting nut 94 as the first fixing screw of the operating lever 93 is disposed on the side surface of the sewing machine, and the third drawing is as shown in Fig. 2, and the circular groove 95 is attached to the differential feed lever, that is, An example in which the arcuate groove 98 is formed in the differential feed lever 97 is shown. In the manual operation means of each of the above embodiments, the adjusting nut which is the second fixing screw provided on the main feed lever is displayed. And an adjustment nut provided as a first fixing screw on the differential feed lever, which is provided on one side of the first and second adjustment shafts, but in the example shown in FIG. The adjusting nut 1 0 2 for the lever 1 0 1 and the adjusting nut 1 〇 4 for fixing the differential feed lever I 〇3 to the main feed lever 1 Ο I are provided on both sides of the adjusting shaft. In the figure, the dotted line shows the axis of the adjustment axis. The axis of the adjustment shaft is also shown by the chain line in the figure i~1. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a feeding device for a sewing machine of the present invention as seen from the front. ^ Fig. 2 is a perspective view of the same feeding device as viewed from the back. Figure 3 is a partial cross-sectional front view of the main components of the same feed device. Figure 4 is a side view showing the moving mechanism before and after the main feed table. Fig. 5 is an exploded perspective view of the manual operation means for adjusting the feed amount and the associated member. Figure 6 is a cross-sectional view. Fig. 7 is a side view showing the moving mechanism before and after the differential feed table. Figure 8 is a side elevational view of the manual operation of adjusting the feed gear. 1343434. Fig. 9 is a cross-sectional view showing the manual operation means shown in Fig. 8. Fig. 10 is a perspective view showing another example of the manual operation means. The figure is a perspective view showing still another example of the manual operation means. Fig. 12 is a perspective view showing still another example of the manual operation means. Fig. 13 is a perspective view showing still another example of the manual operation means. Fig. 14 is a perspective view showing still another example of the manual operation means. [Description of component symbols] 1 Main feed gear φ 2 Main feed table 2a' 4a Bifurcation 2b, 4b Bifurcation 3 Differential feed gear 4 Differential feed table 5 Main shaft a Bushing 5b
6、1 1 7 平衡器 墊圈 角形擋塊 上下進給軸 8、 9' 17、 26' 43、 51 臂 12 14 15 16 上下進給桿 主前後進給軸 偏心體 主進給桿 1343434 ， 18 、 44 19、 24 、 45 、 49 21、46 22 23 ii 27 ' 5 2 29、65 31、 61、 75、 84、 φ 91 、 101 32 33 34 35 36 37、5 5 38 、 68 、 71 、 77 、 φ 81、 88、 89、 92、 94 、 102、 104 41 42 ' 4 7 48 54 、 69 、 76 、 87 、 97、103 第1連桿 銷 第2連桿 第1調節軸 操縱桿 連桿 縫紉機機殻 主進給操縱桿 墊圈 螺絲 顯示板 內圓弧溝 外圓弧溝 附段落螺絲 調節螺母 差動前後進給軸 差動進給桿 第2調節軸 操縱桿 差動進給操縱桿 -20 - 93、 1343434 55a 調節螺母 61a' 69a 附段落螺絲 62 、 63 、 67 、 95 ' 98 圓弧溝 66 顯示板 72 止動部 73 止動銷 78 、 79 、 86 縱孔 82、85 刻度6, 1 1 7 Balancer washer Angle block up and down feed axis 8, 9' 17, 26' 43, 51 Arm 12 14 15 16 Upper and lower feed rod main front and rear feed axis eccentric body main feed rod 1343434, 18 44 19, 24, 45, 49 21, 46 22 23 ii 27 ' 5 2 29, 65 31, 61, 75, 84, φ 91 , 101 32 33 34 35 36 37, 5 5 38 , 68 , 71 , 77 , φ 81, 88, 89, 92, 94, 102, 104 41 42 ' 4 7 48 54 , 69 , 76 , 87 , 97 , 103 1st link pin 2nd link 1st adjustment shaft lever linkage sewing machine Shell main feed joystick washer screw display plate inner arc groove outer arc groove with paragraph screw adjustment nut differential front and rear feed axis differential feed rod 2nd adjustment shaft joystick differential feed joystick -20 - 93 , 1343434 55a adjusting nut 61a' 69a with paragraph screws 62, 63, 67, 95' 98 arc groove 66 display plate 72 stop 73 stop pin 78, 79, 86 vertical hole 82, 85 scale
-21--twenty one-