201125681 六、發明說明： 【發明所屬之技術領域】 本發明係為一種寬帶砂光機砂帶往復運動暨執跡修 正裝置（二），在此專指從動輪托架能以軸桿為支點的自動 作簡諧運動之技術，以確保繞設於從動輪與主動輪外周之 砂帶能均勻的進行砂光作業。 【先前技術】 本發明人申請在案之第951 15520號『寬帶砂光機砂帶 往復運動暨執跡修正裝置』之發明專利，其主要係改善一 般寬帶砂光機時常會有之單邊受力加工情形，該前案係在 機座水平樞固有主動輪，令一托架以軸桿垂直樞固於機座 上方，托架係樞固有一與主動輪對應之從動輪，該主動輪 及從動輪係提供砂帶繞設，再以一修正配置作動該托架以 軸桿為支點的擺動，該修正配置係在托架所設置導桿兩側 併排的設有凸輪，兩凸輪在旋轉時會形成一即定之間距， 此間距較導桿大而有餘隙，且該間距能隨兩凸輪旋轉而使 砂帶橫向移動，俾令兩凸輪能時間差的撥動導桿，使托架 能以軸桿為支點的作簡諧運動，令砂帶於加工時之單邊磨 耗情形大幅減少。 該專利前案功效卓著、實用性佳，且結構精簡新穎， 確係一具新穎性及進步性之設計，已獲鈞局准予專利， 惟本發明人並不以此自滿，持續針對該一裝置改良設計， 201125681 發現該專利前案至少有以下兩點有待改良之處： 1. 其兩凸輪驅動之齒輪箱，須要特別訂製，方能以兩 ， 中心軸同步驅動兩凸輪，由於該種齒輸箱並非規格化產品 , ，且兩凸輪之安裝及各別角度校正又太浪費時間，導致製 造成本無法有效降低，實難提經濟效益之增長。 2. 其修正的時間是採雙邊對稱設計，但是砂帶在加工 條件不良時，往往會一直朝同一方向移動，故而此種雙邊 • 對稱修正方式並不足以因應，此乃該專利前案無法突破之 處。 有鑑於上揭專利前案之成本居高不下、單邊修正時 間不足之缺點，乃以多年的專業經驗與心得，經不斷構 思、創研，乃研發出具實用之本發明。 【發明内容】 本發明主要内容在於：乃是將修正配置之齒輪箱改成 • 單軸輸出，用以提供一凸輪安裝，至於托架則設有一固定 間距，並令凸輪容設於其中，使凸輪轉動時，能藉由其相 對位置之直徑變化而時間差的撥動固定間距兩側，令托架 能以軸桿為支點的作簡諧運動，以進行砂帶雙邊修正，俾 減少砂帶於加工時之單邊磨耗；此一改良使齒輸箱製造、 凸輪安裝能達到符合經濟之原則及新穎功能，有效地降低 成本、提高生產效率，確實為一具進步性之技術無誤。 本發明另一内容在於：乃是另設有一電控修正裝置， 4 201125681 其主要於機座相對砂帶兩側分別安裝有能偵測砂帶偏移 之感應開關，該兩感應開關則各控制有一致動器，該致動 . ι§係由電磁閥及計時機構組成*並令該兩電磁閥分別以弹 , 簧拉動托架，俾在砂帶雙邊修正下，尚能強制托架以軸桿 為支點的作砂帶單邊修正，據此，以改變簡諧運動周期， 進而使本發明兼具有平時校正和強化校正之雙重功能。 本發明又一内容在於：其主要於托架間隔設置有兩滾 • 動元件，令兩滚動元件之間形成一固定間距，而凸輪之中 心軸線係與兩滾動元件之中心轴線平行，使凸輪繞其中心 軸線轉動時，能藉由其相對位置之直徑變化而時間差的撥 動兩滾動元件，令托架能以軸桿為支點的作簡諧運動，以 減少砂帶於加工時之單邊磨耗。 【實施方式】 為使貴審查委員能進一步瞭解本發明之結構，特徵 φ 及其他目的，玆附以較佳實施例之圖式詳細說明如后： 請參看第一、二及四圖，本發明包含有： 一機座（10)，其於底部水平間隔的樞固有至少兩滾 輪，於該等滾輪外周繞設有砂帶（11)，俾在任一滾輪轉動 下，使砂帶（11)一併轉動，令砂帶（11)所形成之水平工作 平台，可以提供工件底面砂光；機座（11)於水平工作平台 中央之背側豎設有一立柱（12)，此立柱（12)以鳩尾槽及鳩 尾塊之配合而縱向的滑設有一滑塊（13)，該滑塊（13)係藉 由螺設於立柱（12)之螺桿控制，而能上下升降定位，然後 [s] 5 201125681 在滑塊（13)背面安裝有馬達（I4)、前面則鎖設有一 e形狀 之固定框架（15)，使此固定框架（丨5)跨設於水平工作平台 上方； 一水平設置之主動輪（2〇) ’其一端係樞固於滑塊 (13)、另端則框固於固定框架（15)底端所組設之支架 (150)，並使主動輪（20)能為馬達（14)連動而能運轉，俾 能以繞其中心軸線轉動之方式與該機座（1〇)耦接； 一托架（30)，係略等寬的設置在固定框架（15)上方， 托架（30)底端中央則向下延設有一轴桿（31)，而固定框架 (15)則相對應的設置有組裝孔（151)，以供軸桿（31)穿套 ，並限位軸桿（31)可升降滑移，而此軸桿（31)之中心軸線 係垂直主動輪（20)之中心軸線，並使托架（30)能以繞軸桿 (31)中心軸線方式與機座（1〇)耦接； 一從動輪（40)’其係以繞其中心軸線轉動之方式與該 托架（30)耦接，此從動輪（4〇)中心軸線恰重疊平行於主動 輪（20)上方，以使主動輪（2〇)和從動輪（4〇)外周得繞設砂 帶（5 0 )而構成一總成； 一直軸式之氣壓緩衝棒（6〇)，其係同軸的套入於軸桿 (31)内，此氣壓緩衝棒（6〇)底端柱塞係以萬向軸承鎖合於 固定框架（15)底面，使氣壓緩衝棒⑽頂端柱塞能以預設 彈力頂挲轴杯（31)，令托架⑽）得向上懸吊定位，俾將主 動輪（2G)從動輪⑽）外周繞覆之砂帶⑼）樓緊；為了方 201125681 便砂帶（50)可以簡便且快速的取下更換，其固定框架（15) 側組设有一控杯（61)，該控桿（6丨）約中段位置係藉螺軸 -⑽而樞固於固^框架（15)，其控桿（61)外端係突出固定 - 框架（15)、内端緣則以栓軸（63)耦接一卡掣件（64)，使卡 掣件（64)能作動軸桿（31)，俾在該控桿（61)上拉時能藉卡 掣件（64)帶動軸桿（31)壓縮氣壓緩衝棒（6〇)，令從動輪 (40)縮小與主動輪（20)之間距，以方便的更換砂帶（5〇)， 籲t釋放控#(62)後，其氣壓緩衝棒（⑼）便能提供一份從動 輪（40)向上復歸定位之動力’以便將新換上的砂帶（5〇)編 緊，以利繼續砂光作業； 二、四、五、六圖觀之， 而與軸桿（31)呈一固定距 一修正配置，請配合第一、 其係設置在固定框架（15)頂面， 離，而由一内部具變速齒輪組之齒輪箱（7〇)、一凸輪（71)201125681 VI. Description of the Invention: [Technical Field] The present invention is a wide-band sander belt reciprocating motion and obstruction correction device (2), in which the driven wheel bracket can be pivoted as a fulcrum Self-operating simple harmonic motion technology to ensure that the sanding belt around the outer circumference of the driven wheel and the driving wheel can perform sanding work uniformly. [Prior Art] The present inventors applied for the invention patent of the "wideband sander belt reciprocating motion and rehearsing correction device" No. 951 15520, which mainly improves the single side of the general wide belt sander. In the case of force machining, the front case is an inherently active wheel of the horizontal pivot of the base, so that a bracket is vertically pivoted above the base with the shaft, and the bracket is inherently a driven wheel corresponding to the driving wheel, the driving wheel and The driven wheel train provides the belt winding, and then the bracket is oscillated with the shaft as a fulcrum in a modified configuration. The modified configuration is provided with cams arranged side by side on the guide rods provided on the bracket, and the two cams are rotated. A predetermined distance is formed, which is larger than the guide rod and has a clearance, and the spacing can move the belt laterally as the two cams rotate, so that the two cams can shift the guide rod with a time difference, so that the bracket can be the shaft The rod is a simple harmonic motion of the fulcrum, which greatly reduces the unilateral wear of the belt during processing. The patent's predecessor has outstanding efficacy, good practicability, and its structure is simple and novel. It is a novel and progressive design. It has been granted a patent by the bureau, but the inventor is not complacent and continues to target the device. Improved design, 201125681 found that the patent has at least the following two points to be improved: 1. The two cam-driven gearboxes need to be specially ordered to simultaneously drive the two cams with two central axes, due to the kind of teeth. The transmission box is not a standardized product, and the installation of the two cams and the correction of the respective angles are too wasteful, which leads to the inability to effectively reduce the manufacturing cost, and it is difficult to increase the economic benefits. 2. The time of modification is a bilateral symmetrical design, but the abrasive belt tends to move in the same direction when the processing conditions are bad. Therefore, this bilateral symmetry correction method is not enough. This is the patent can not be broken. Where. In view of the shortcomings of the high cost of the patent application and the shortcomings of the unilateral correction time, it is based on years of professional experience and experience. Through continuous thinking and research, it is the invention of the invention. SUMMARY OF THE INVENTION The main content of the present invention is to change the modified gear box to a single-axis output for providing a cam mounting, and the bracket is provided with a fixed spacing and the cam is accommodated therein. When the cam rotates, the diameter of the relative position can be changed by a time difference to fix both sides of the pitch, so that the bracket can be used as a fulcrum of the shaft as a fulcrum for the bilateral correction of the belt, and the belt is reduced. Unilateral wear during processing; this improvement enables the gearbox manufacturing and cam mounting to meet economic principles and novel functions, effectively reducing costs and improving production efficiency. It is indeed a progressive technology. Another aspect of the present invention resides in that: an electronically controlled correction device is additionally provided, 4 201125681, which is mainly provided with an inductive switch capable of detecting the deviation of the abrasive belt on the two sides of the machine seat, and the two inductive switches are respectively controlled. There is an actuator, the actuation. ι§ is composed of a solenoid valve and a chronograph mechanism*, and the two solenoid valves are respectively pulled by the spring and the spring, and the bracket is clamped under the bilateral correction of the belt, and the bracket can be forced to the shaft. The rod is a fulcrum for the unilateral correction of the sanding belt, and accordingly, the cycle of the simple harmonic motion is changed, so that the present invention has both the functions of normal correction and reinforcement correction. Another aspect of the present invention is that the two roller and the movable member are disposed at intervals of the bracket, so that a fixed interval is formed between the two rolling elements, and the central axis of the cam is parallel to the central axis of the two rolling elements, so that When the cam rotates around its central axis, the two rolling elements can be moved by the change of the diameter of the relative position and the time difference, so that the bracket can be used as a fulcrum of the shaft as a fulcrum to reduce the single belt when the belt is processed. Edge wear. [Embodiment] In order to enable the reviewing committee to further understand the structure of the present invention, the feature φ and other objects, the detailed description of the preferred embodiment is as follows: Please refer to the first, second and fourth figures, the present invention. The utility model comprises: a machine base (10), wherein the bottom horizontally spaced pivots are at least two rollers, and an abrasive belt (11) is arranged around the outer circumference of the rollers, and the belt is rotated under any one of the rollers to make the abrasive belt (11) And rotating, so that the horizontal working platform formed by the abrasive belt (11) can provide sanding of the bottom surface of the workpiece; the base (11) is vertically provided with a column (12) on the back side of the center of the horizontal working platform, and the column (12) is A slider (13) is longitudinally slidably engaged with the tail groove and the tail piece. The slider (13) is controlled by a screw screwed to the column (12), and can be vertically moved up and down, and then [s] 5 201125681 A motor (I4) is mounted on the back of the slider (13), and an e-shaped fixed frame (15) is locked on the front side, so that the fixed frame (丨5) is placed above the horizontal working platform; Wheel (2〇) 'One end is pivoted to the slider (13), the other end The frame (150) is fixed to the bottom end of the fixed frame (15), and the driving wheel (20) can be operated for the motor (14) to be linked, and the machine can rotate around the central axis thereof. The base (1〇) is coupled; a bracket (30) is slightly wider than the fixed frame (15), and a shaft (31) is extended downward in the center of the bottom end of the bracket (30), and The fixing frame (15) is correspondingly provided with an assembly hole (151) for the shaft (31) to pass through, and the limiting shaft (31) can be lifted and slid, and the central axis of the shaft (31) The central axis of the vertical driving wheel (20), and the bracket (30) can be coupled to the base (1〇) around the central axis of the shaft (31); a driven wheel (40) is wound around The central axis is rotated in such a manner as to be coupled to the bracket (30). The central axis of the driven wheel (4〇) is just overlapped above the driving wheel (20) so that the driving wheel (2〇) and the driven wheel (4〇) The outer circumference is surrounded by an abrasive belt (50) to form an assembly; the axially-shaped pneumatic buffer rod (6〇) is coaxially inserted into the shaft (31), and the air pressure buffer rod (6〇) Bottom plunger system The universal bearing is locked to the bottom surface of the fixed frame (15), so that the top plunger of the air pressure buffering rod (10) can top the shaft cup (31) with a predetermined elastic force, so that the bracket (10) can be hung up and positioned, and the driving wheel is 2G) driven wheel (10)) The outer belt (9) is wound tightly; for the 201125681, the sand belt (50) can be easily and quickly removed and replaced, and the fixed frame (15) side group is provided with a control cup (61) The middle position of the control rod (6丨) is pivoted to the fixing frame (15) by the screw shaft-(10), and the outer end of the control rod (61) is protruded and fixed-frame (15), and the inner end edge is The pin shaft (63) is coupled to a latching member (64), so that the latching member (64) can actuate the shaft (31), and can be driven by the latching member (64) when the lever (61) is pulled up. The shaft (31) compresses the air pressure buffer rod (6〇), so that the driven wheel (40) is narrowed to the distance between the driving wheel (20), so as to conveniently replace the belt (5〇), and after releasing the control #(62) The air pressure buffer rod ((9)) can provide a power of the driven wheel (40) to return to the position of the 'replacement' so that the newly replaced belt (5〇) can be tightened to facilitate the sanding operation; Five or six views And a fixed distance from the shaft (31), a modified configuration, please cooperate with the first, the system is placed on the top surface of the fixed frame (15), and the gearbox of the internal gear shifting gear (7〇) ), a cam (71)
兩滾動元件（72)(73)所組成；其齒輪箱（7〇)底面、固定 框架（15)頂面在相對位置設有互為滑配之滑塊（7〇1)、滑 槽（152)，以使齒輪箱（70)可沿托架（3〇)左右擺動方向限 [s] 位滑移，而齒輪箱（70)底面並向外延設有耳部（7〇2)，該 耳部（702)則貫設有調整槽（7〇3)，用以供螺栓（7〇4)穿掣 而鎖固於固定框架（150)頂面；至於齒輪箱（7〇)側向突出 有一傳動軸（705)，用以組裝皮帶輪（7〇6)，該皮帶輪（7〇6) 可供皮帶（707)繞設，俾為主動輪（2〇)所驅動，而齒輪箱 α〇)頂面則突出有一中心軸（708)，此中心轴（708)係供上 7 201125681 述凸輪（71)固置，齒輪箱（70)中則在中心軸（708)、傳動 轴（705)之間相交的嚙合有蝸桿（709)、蜗輪（709，），以 . 使中心軸（708)能減速的輸出動力，而托架（30)在凸輪（71) . 兩侧分別設有滾動元件（72)(73)，該兩滾動元件（72)(73) 可為一軸承，其具有貫穿上下之轴孔（720)(730)，該軸孔 (720) (730)能供對應之軸件（721 )(731)穿掣而固設於托 架（30)底面，並控制兩滾動元件（72)(73)之中心軸線係與 φ 凸輪（71)之中心軸線平行，令兩滾動元件（72)(73)之間則 形成一可供凸輪（71)容設之固定間距，且能透過旋轉軸件 (721) (731)之角度而調整兩滾動元件（72)(73)之固定間 距’請配合第七、八、九、十圖觀之，俾在凸輪（71)每 旋轉一圈時，能藉由其相對位置之直徑變化而時間差的循 環撥動兩滚動元件（72)(73)，令托架（30)能以軸桿（31)為 支點的被修正調整，以隨時保持砂帶（50)能位於從動輪 • (40)中央位置； 一調整總成，其於固定框架（15)外側鎖設有一指示面 板（80) ’且該指示面板（80)頂緣橫設有調整槽（801)，此 調整槽（801)係供一設定螺栓（802)穿掣，使之在歸零調校 時’可將指示面板（80)鎖設於托架（30)預設之螺孔（803) ，特別說明，該設定螺栓（802)僅在歸零調校才鎖緊；此 指示面板（80)另設有上下對稱之上指針槽（81)、下指針槽 (82)，該上指針槽（81)、下指針槽（82)則設有相對稱之刻 201125681 度標示（83)，然後在固定框架（15)鎖設有一能伸入上指針 槽（81)而與其刻度標示（83)相對之上指針（84);相同的道 • 理，齒輪箱（70)頂面亦設有一下指針（85)，此下指針（85) - 係伸入下指針槽（82)中，在從動輪（40)與主動輪（20)完全 平行對稱時，此下指針（85)與上指針（84)均能同時歸零於 刻度標示（83);然後在齒輪箱（7〇)底面鎖設一調整座（86) ，而固定框架（15)則對稱的鎖固有一固定座（87)，其以一 Φ 調整螺栓（88)穿過固定座（87)而牽動調整座（86)，俾能於 旋轉調整螺栓（88)後而可位移調整座（86)，用以調整齒輪 箱（70)於滑槽（152)之位移量；以及 一電控修正裝置，請配合第一、二、三及七圖觀之， 其係在固定框架（15)位於砂帶（5 〇)兩側的位置分別組設 有一感應開關（91)(92)，令該兩感應開關（91)(92)在供砂 帶（50)偏移對應侧碰觸時，能作出相應之訊號控制；而固 • 定框架（15)另在距軸桿（31)適當位置組裝有一支架（93) ，该支架（93)上則分別安裝有一由電磁閥及計時機構所組 成之致動器（94)(95)，令一致動器（94)能以一緩衝彈簧 (941)驅動固定框架（15)向一側偏轉、另一致動器（95)亦 以其緩衝彈簧（95〇驅動固定框架（15)向另側偏轉，以使 電控修正裝置能提供預設作用力予托架（30)，俾令托架 (30)此·以軸桿（31)為支點的被緩衝；具體而言，當砂帶（5〇) 向左或向右偏移設定位置而碰觸到相應之感應開關（91) [ s] 9 201125681 (92)時’該感應開關（91)(92)便能發出一相應之訊號，以 啟動致動器（94)(95)中之電磁閥能與相應緩衝彈簧（941) - (951)產生〇. 8〜1. 5kg的拉力，用以主動作用托架（30)以軸 . 桿（31)為支點的作擺動，以改變修正配置作簡諧運動之周 期’俾進一步的校正此種砂帶（50)單邊偏移情形，促使砂 帶（50)能往從動輪（4〇)中央位置移動；而致動器（94)(95) 中之計時機構是設定在至少5秒，換言之，當砂帶（50)單 # 邊碰觸到相應之感應開關（91)(92)時，其便能啟動相應致 動器（94)(95)作用5秒，然後停止，如該砂帶（50)單邊偏 移情形尚未改善，其感應開關（91)(92)則能再次作用相應 致動器（94)(95)，如此便能使本發明以修正配置作平時校 正，和以電控修正裝置作強化校正之雙重功能，且此種控 制模式，亦能減少電控修正裝置之使用次數，據以延長電 控修正裝置之使用壽命。此外，如第三圖所示，感應開關 • (91)係採用一般常見之微動開關，惟其觸桿（911)並不耐 砂帶（50)側邊往覆碰觸，是以，可於該觸桿（911)外周套 合有一能繞中心轉動之陶瓷護管（912)，以延長該微開關 之使用壽命。 本發明在組裝須先進行歸零調校，調校時須確認皮帶 (707)尚未安裝’然後使凸輪（71)如第七或九圖所示般處 於旋轉0度或180度之靜止不動狀態下，然後啟動馬達（14) ，使砂帶（50)於主動輪（20)和從動輪（4〇)外周繞動（皮帶 201125681 未安裝’此時凸輪並不會同步轉動），繼之，手動調整砂 帶（50)或左或右移動，使砂帶（50)運轉及往復橫向位移能 - 在預設軌跡内，才將第二圖所示之設定螺栓（802)螺入托 - 架（30)之螺孔（803)，繼之，旋轉調整螺栓（88)而使齒輪 箱（70)於固定框架（15)上限位滑移，待凸輪（71)在兩滚動 元件（72)(73)中央位置後，便以螺栓（704)將齒輪箱（70) 鎖固，並令上指針（84)以及下指針（85)指示於同一數值之 # 刻度標示（83)，如此即完成歸零調校之動作，而可將將皮 帶（707)安裝上。 在調校而轉動此砂帶（50)時，由於砂帶（5〇)喇。八孔程 度不一 ’所以從動輪（40)會以軸桿（31)為中心的偏擺，使 上指針（84)不會在刻度標示（83)歸零位置，因此凸輪（71) 並不會在兩滾動元件（72)(73)間之中央位置，此時，只須 旋轉調整螺栓（88)而調整齒輪箱（7〇)，使下指針（85)指示 籲於同一數值之刻度標示（83)，即可使凸輪（71)位於兩滾動 元件（72)(73)間之中央位置’如此凸輪（71)便能以時間差 的撥動兩滾動元件（72)(73)，使從動輪（40)能以軸桿（31) 為支點的作簡諧運動，該運動方式具有大範圍調校，且凸 輪（71)在同時旋轉一圈中，能各別的修正從動輪（4〇)一 次，也就是本發明具有二個修正頻率，所以使從動輪（4〇) 在經精密及多次的修正後，能有效改善砂帶（5〇)於加工時 之單邊磨耗。 201125681 由上述之詳細說明得知，本發明至少具有以下優點： 1. 本發明係以一凸輪於托架之固定間距中旋動，其齒 . 輪箱改採單一輸出中心軸之機型，其可選用市面上大量製 , 造之規格化產品，所以整體製造成本自然遠較上揭專利前 案更具優勢。 2. 本發明安裝凸輪時更具有方便快速之優點，因上揭 專利前案在安裝兩凸輪時，須浪費時間的調校彼此相對角 φ 度，反觀本發明則無此一組裝困擾，故而能使生產效率得 更具有效的為產業利用。 3. 本發明平時係以修正配置作校正，但是在砂帶一直 朝同一方向移動時，便能啟動電控修正裝置作強化校正， 此種互補之校正模式，除能延長電控修正裝置之使用壽 命，且確時能保持砂帶位於從動輪中央位置。 綜上所述，本發明業已完全突破現有技術之問題，是 • 一技術理念上的高度創作，應符專利申請要件，爰依法提 出申請。惟以上所述者，僅為本發明之一較佳實施例而 已，當不能以之限定本發明實施之範圍，即大凡依本發明 申請專利範圍所作之均等變化與修飾，皆屬本發明之範 圍。 [s] 12 201125681 【圖式簡單說明】 第一圖：係本發明之組合外觀示意圖。 第二圖：係本發明之部份結構分解示意圖。The two rolling elements (72) (73) are composed; the bottom surface of the gear box (7〇) and the top surface of the fixed frame (15) are provided with sliding blocks (7〇1) and chutes (152) at opposite positions. ), so that the gear box (70) can be slid along the left and right swing directions of the bracket (3 〇), and the bottom surface of the gear box (70) is provided with an ear (7〇2), the ear The portion (702) is provided with an adjusting groove (7〇3) for the bolt (7〇4) to be threaded and locked to the top surface of the fixing frame (150); and the gear box (7〇) protrudes laterally A drive shaft (705) for assembling a pulley (7〇6), the pulley (7〇6) is provided for the belt (707), and the drive wheel (2〇) is driven, and the gear box α〇) The surface protrudes from a central axis (708) which is attached to the 7 201125681 cam (71) and the gearbox (70) between the central shaft (708) and the transmission shaft (705). The intersecting meshing has a worm (709), a worm gear (709,), an output power that enables the central shaft (708) to decelerate, and a bracket (30) on the cam (71). Rolling elements are provided on both sides (72). (73), the two rolling elements (72) (7) 3) can be a bearing having a shaft hole (720) (730) extending through the upper and lower shafts, and the shaft hole (720) (730) can be fixed to the bracket by the corresponding shaft member (721) (731) (30) a bottom surface, and controlling a central axis of the two rolling elements (72) (73) to be parallel to a central axis of the φ cam (71), such that a cam is formed between the two rolling elements (72) (73) ( 71) The fixed spacing of the contents, and the fixed spacing of the two rolling elements (72) (73) can be adjusted by the angle of the rotating shaft member (721) (731). Please cooperate with the seventh, eighth, ninth, and tenth views. When the cam (71) makes one rotation, the two rolling elements (72) (73) can be pulsed by the time difference of the relative position of the diameter change, so that the bracket (30) can be the shaft ( 31) Corrected the adjustment of the fulcrum to keep the belt (50) at the center of the driven wheel (40) at any time; an adjustment assembly that is locked with an indicator panel (80) on the outside of the fixed frame (15). And the top edge of the indicating panel (80) is horizontally provided with an adjusting groove (801), which is provided for a setting bolt (802) to be worn, so that when the zeroing is adjusted, the indicating surface can be (80) The screw hole (803) is preset to the bracket (30). Specifically, the setting bolt (802) is locked only when the zero adjustment is performed; the indicator panel (80) is further provided with upper and lower symmetry. The upper pointer slot (81) and the lower pointer slot (82), the upper pointer slot (81) and the lower pointer slot (82) are provided with a symmetrical 201125681 degree indicator (83), and then in the fixed frame (15). The lock is provided with a pointer (84) which can extend into the upper pointer slot (81) opposite to the scale indicator (83); the same path is provided, and the top surface of the gearbox (70) is also provided with a lower pointer (85). The lower pointer (85) - extends into the lower pointer slot (82). When the driven wheel (40) is completely parallel to the driving wheel (20), both the lower pointer (85) and the upper pointer (84) can be returned simultaneously. Zero is marked on the scale (83); then an adjustment seat (86) is locked on the bottom surface of the gear box (7〇), and the fixed frame (15) is symmetrically locked with a fixed seat (87), which adjusts the bolt with a Φ (88) Pulling the adjustment seat (86) through the fixing seat (87), and the rotation adjusting bolt (88) can be used to displace the adjusting seat (86) for adjusting the gear box (70) in the chute (152) The amount of displacement; and an electronically controlled correction device, please cooperate with the first, second, third and seventh diagrams, which are respectively provided with a sensing at the positions of the fixed frame (15) on both sides of the abrasive belt (5 〇) The switch (91) (92) enables the two inductive switches (91) (92) to perform corresponding signal control when the belt (50) is offset from the corresponding side of the belt (50); and the fixed frame (15) A bracket (93) is assembled at an appropriate position from the shaft (31), and an actuator (94) (95) composed of a solenoid valve and a timing mechanism is respectively mounted on the bracket (93) to enable the actuator ( 94) The fixing frame (15) can be deflected to one side by a buffer spring (941), and the other actuator (95) is also deflected to the other side by a buffer spring (95〇 driving the fixing frame (15) to make electricity The control correction device can provide a preset force to the bracket (30), and the bracket (30) is buffered by the shaft (31) as a fulcrum; specifically, when the belt (5〇) is leftward Or offset the set position to the right and touch the corresponding sensor switch (91) [ s] 9 201125681 (92) 'The sensor switch (91) (92) can send a corresponding signal, The solenoid valve in the actuating actuator (94) (95) can generate a tension of 8 to 1. 5 kg with the corresponding buffer springs (941) - (951) for actively acting on the bracket (30) to the shaft. The rod (31) is a pivot of the fulcrum to change the correction configuration for the period of the simple harmonic motion' 俾 further correcting the unilateral offset of the belt (50), and the belt (50) can be driven to the driven wheel (4) 〇) The central position moves; and the chronograph mechanism in the actuator (94) (95) is set for at least 5 seconds, in other words, when the belt (50) single # touches the corresponding sensor switch (91) (92) When it can start the corresponding actuator (94) (95) for 5 seconds, then stop, if the belt (50) unilateral offset has not improved, its sensor switch (91) (92) can The corresponding actuator (94) (95) is actuated again, so that the present invention can be used for the normal correction in the modified configuration and the enhanced function of the electronically controlled correction device, and the control mode can also reduce the electronic control. Correct the number of uses of the device to extend the life of the electronically controlled device. In addition, as shown in the third figure, the sensor switch (91) adopts the commonly used micro switch, but the contact rod (911) is not resistant to the side of the belt (50). The outer periphery of the stem (911) is sleeved with a ceramic sheath (912) that is rotatable about the center to extend the life of the microswitch. In the invention, the zero adjustment should be performed first in the assembly. When adjusting, it is necessary to confirm that the belt (707) has not been installed, and then the cam (71) is in a stationary state of 0 or 180 degrees as shown in the seventh or ninth figure. Next, then start the motor (14) so that the belt (50) is wound around the outer circumference of the driving wheel (20) and the driven wheel (4〇) (the belt 201125681 is not installed 'the cam does not rotate at the same time), and then Manually adjust the belt (50) or move left or right to make the belt (50) run and reciprocate lateral displacement energy - in the preset trajectory, screw the setting bolt (802) shown in the second figure into the bracket ( 30) a screw hole (803), followed by rotating the adjusting bolt (88) to cause the gear box (70) to slip at the upper limit of the fixed frame (15), and the cam (71) is at the two rolling elements (72) ( 73) After the central position, the gearbox (70) is locked with bolts (704), and the upper pointer (84) and the lower pointer (85) are indicated by the same scale ## (83), thus completing the return The movement of the zero adjustment is performed, and the belt (707) can be installed. When the belt (50) is rotated while adjusting, the belt (5 inches) is pulled. The eight holes are not the same degree, so the driven wheel (40) will be yawed around the shaft (31), so that the upper pointer (84) will not return to the zero position of the scale (83), so the cam (71) is not Will be in the center position between the two rolling elements (72) (73). At this time, only adjust the gear box (7〇) by rotating the adjusting bolt (88), so that the lower pointer (85) indicates the scale indicating the same value. (83), so that the cam (71) is located at a central position between the two rolling elements (72) (73). Thus, the cam (71) can toggle the two rolling elements (72) (73) with a time difference. The moving wheel (40) can perform simple harmonic motion with the shaft (31) as a fulcrum. The movement mode has a large range adjustment, and the cam (71) can rotate the one rotation at the same time, and can respectively correct the driven wheel (4〇). ) Once, that is, the invention has two correction frequencies, so that the driven wheel (4〇) can effectively improve the unilateral wear of the abrasive belt (5〇) during processing after precise and multiple corrections. 201125681 From the above detailed description, the present invention has at least the following advantages: 1. The present invention is a machine in which a cam is rotated at a fixed pitch of the bracket, and the gear is changed to a single output central shaft. The large-scale system can be selected and made into standardized products, so the overall manufacturing cost is far more advantageous than the previous patent application. 2. The invention has the advantages of convenience and quickness when installing the cam. Because the pre-patent patent case has to be time-consuming to adjust the relative angle φ degrees when installing the two cams, the present invention has no such assembly trouble, so Make production more efficient for industrial use. 3. The present invention is usually corrected by a modified configuration, but when the abrasive belt is always moving in the same direction, the electronically controlled correction device can be activated for enhanced correction. This complementary correction mode can extend the use of the electronically controlled correction device. Life, and indeed, keep the belt in the center of the driven wheel. In summary, the present invention has completely broken through the problems of the prior art, and is: • a high degree of creation in the technical concept, which should meet the requirements of the patent application, and apply in accordance with the law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent variations and modifications made by the scope of the present invention are all within the scope of the present invention. . [s] 12 201125681 [Simplified description of the drawings] The first figure is a schematic view of the combination of the present invention. Second figure: is a schematic exploded view of a part of the structure of the present invention.
A 第三圖：係本發明之感應開關放大示意圖。 第四圖：係本發明托架及固定框架間之局部剖面示意圖。 第五、六圖：係本發明變速箱之剖面結構示意圖。 第七圖：係本發明凸輪於旋轉0度時之俯視示意圖。 Φ 第八圖：係本發明凸輪於旋轉90度時之動作示意圖。 第九圖：係本發明凸輪於旋轉180度時之動作示意圖。 第十圖：係本發明凸輪於旋轉270度時之動作示意圖。 【主要元件符號說明】 (10)機座 (13)滑塊 (150)支架 (20)主動輪 (30)托架 (40)從動輪 (50)砂帶 (60)氣壓緩衝棒 (6 3)栓軸 (70)齒輪箱 (703)調整槽 (11)砂帶 (14)馬達 (151)組裝孔 (31)軸桿 (61)控桿 (64)卡掣件 (701)滑塊 (704)螺栓 (12)立柱 (15)固定框架 (152)滑槽 (62)螺軸 (702)耳部 (705)傳動軸 ί Sj 13 201125681 (706)皮帶輪 (707)皮帶 (708)中心軸 (709)蝸桿 (709’）蜗輪 (71)凸輪 (72) (73)滚動元件（720) (730)軸孔 (721)(731 )軸件 (80)指示面板 (801)調整槽 (802)設定螺栓 (803)螺孔 (81)上指針槽 (82)下指針槽 (83)刻度標示 (84)上指針 (85)下指針 (86)調整座 (87)固定座 (88)調整螺栓 (91)(92)感應 開關（911)觸桿 (912)護套 (93)支架 (94)致動器 (95)致動器 (941)(951 )緩衝彈簧A third figure: an enlarged schematic view of the inductive switch of the present invention. Figure 4 is a partial cross-sectional view showing the bracket and the fixed frame of the present invention. Fifth and sixth figures are schematic cross-sectional structures of the gearbox of the present invention. Figure 7 is a top plan view of the cam of the present invention when rotated at 0 degrees. Φ Eighth: It is a schematic diagram of the action of the cam of the present invention when rotated by 90 degrees. Fig. 9 is a schematic view showing the action of the cam of the present invention when rotated by 180 degrees. Fig. 10 is a schematic view showing the action of the cam of the present invention when it is rotated by 270 degrees. [Main component symbol description] (10) Base (13) Slider (150) Bracket (20) Driving wheel (30) Bracket (40) Driven wheel (50) Abrasive belt (60) Air pressure buffer rod (6 3) Bolt shaft (70) gear box (703) adjustment groove (11) belt (14) motor (151) assembly hole (31) shaft (61) lever (64) clamp (701) slider (704) Bolt (12) Post (15) Fixing Frame (152) Chute (62) Screw Shaft (702) Ear (705) Drive Shaft ί Sj 13 201125681 (706) Pulley (707) Belt (708) Center Shaft (709) Worm (709') worm gear (71) cam (72) (73) rolling element (720) (730) shaft hole (721) (731) shaft member (80) indicating panel (801) adjusting groove (802) setting bolt (803) Screw hole (81) Upper pointer groove (82) Lower pointer groove (83) Scale indication (84) Upper pointer (85) Lower pointer (86) Adjustment seat (87) Fixing seat (88) Adjustment bolt (91) (92) Inductive Switch (911) Contact Bar (912) Sheath (93) Bracket (94) Actuator (95) Actuator (941) (951) Buffer Spring