1235707 (1) 玖、發明說明 【發明所屬之技術領域】 本發明是關於輥軋裝置，特別是關於適合於光學用塑 膠薄片的賦形成形之輥軋裝置。 【先前技術】 使用於背投影用螢幕的透鏡板等的光學用塑膠薄片是 在其表裏兩面賦形有凹凸的花紋。此花紋的賦形是使用在 外周平行地配設有刻設著賦形花紋的賦形成形用輥子對之 輥軋裝置來進行，藉由在該輥子對間壓出薄片而成形，來 形成壓花（參照專利文獻1 )。 在進行此賦形之際，須要在輥子的軸方向調整表裏的 凹凸花紋之相位。此相位調整是以輥子對的其中一方的輥 子作爲基準輥子，使另一方的輥子朝軸方向移動來進行。 在如此之以往的使用成形輥子對的輥軋裝置，例如作 爲透明薄片成形的基本結構，與輥子同軸地設置輥子旋轉 驅動機構，並且使支承輥子軸的軸承箱之座板可朝輥子的 軸方向移動，設置將此座板藉由複數面錐塊等朝輥子軸方 向移位來進行在軸方向的相位調整的軸方向位置調整機構 (參照專利文獻2 )。 此以往的輥子裝置，是以對峙的形成輥子對之其中一 方的輥子作爲絕對基準輥子，將支承其之軸承箱固定於框 架，且爲了開關輥子間的間隙，而將另一方的輥子的軸承 箱構成能夠朝接近·離開對方輥子的方向（徑方向）移動 -4- (2) 1235707 。即，固定對峙的輥子對之其中一方的輥子，使與之平行 地將另一方的輥子移動（關閉）調整輥子間的間隙，來進 行塑膠薄片的成形。因此’能夠使在輥子對的軸方向之相 位調整功能與在徑方向的間隙開關功能集中於可移動之單 一側的輥子（參照專利文獻2 )。 【專利文獻1】 日本特開昭59-96920號公報 【專利文獻2】 日本特開平1 0-3474 8 【發明內容】 [發明所欲解決之課題] 對於在輥子的軸方向的相位調整’須要對應的推力、 也就是軸向力，此軸向力是根據薄片的成形條件而有所不 同，在此以3 0 KN爲基準之値。又’在以往的軸方向相位 調整機構，座板朝向輥子軸心偏移’在輥子的徑方向偏置 。因此，受到相位調整時的推力，而在輥子支承部產生彎 曲動量（momentum )，在軸方向相位調整機構的各要素 產生翹起現象。此翹起現象造成相位調整機構變成黏滑（ s t i c k s 1 i p )狀，無法獲得細微且高精度的定位精度，重現 性變差。 透鏡板等的光學用塑膠薄片的賦形成形所要求之精度 是處於精密化方向，薄片表裏的花紋（凹凸花紋）間的相 位誤差被要求爲過去的1 /4以下之容許値’然而以往的裝 (3) 1235707 置不易滿足該條件。 在以往的裝置，由於輥子位置與輥子旋轉均以固定側 的輥子爲基準，在此基準輥子附帶有用來使其旋轉驅動之 機構，而使軸方向相位調整功能與輥子間隙開關功能集中 於另一方的輥子，故構造變得複雜，機構在剛性的方面受 到限制。 因此，受到相位調整時的應力，產生與剛性相稱的彈 性變形，這會造成機構的複雜，且引起複雜的操作，並且 φ 因應運轉狀態而產生變動。又，會複合地發生剛性不足所 引起的彈性變形及偏置所造成的翹起現象，因此特定變動 要素變得困難，不易達成適合使用者的需求之高精度的賦 形成形。 本發明是有鑒於上述情事而開發完成的發明，其目的 在於：提供可迴避偏置所引起的翹起現象的產生、及剛性 不足所造成的彈性變形，而適合進行高精度的賦形成形的 輥軋裝置。 φ [用以解決課題之手段] 爲了達到上述目的，本發明之輥軋裝置是藉由可朝軸 方向移動的第1輥子、與對此第1輥子可平行移動的第2輥 子來進行成形。 在本發明的輕軋裝置，藉由以可朝軸方向移動的第1 輥子進行相位調整，能夠不會伴隨有偏置所引起之彎曲動 量，而能夠進行輥子的軸方向相位調整。 -6- (4) 1235707 本發明之輥軋裝置是具有用來調整前述第1輥子的軸 方向位置之位置調整手段爲佳。 前述位置調整手段是具有可朝前述第1輥子的軸方向 螺旋送進之移位構件、與將因應此移位構件的送進量的軸 向力傳送至前述第丨輥子的軸向力傳達手段爲佳。 前述軸向力傳達手段是包含：可與前述移位構件滑動 旋轉地卡合的聯結器、連結與此聯結器的前述第1輥子之 輥子軸爲佳。 前述聯結器是由徑向滾動軸承、與軸向滾動軸承的組 合來形成爲佳。 本發明之輥軋裝置是具備用來將前述第1輥子旋轉驅 動的驅動手段，此驅動手段是包含可朝軸方向滑動地與前 述輥子軸卡合之轉矩傳達構件爲佳。 前述第1輥子是由在外周面刻設有花紋之賦形成形輥 子所構成爲佳。 前述第1及第2輥子是薄片成形用輥子對爲佳。 因此，本發明之輥軋裝置的輥子是在外周面雕刻有花 紋的賦形成形用輥子，在賦形成形時，能夠高精度地進行 輥子的軸方向相位之調整。 又，本發明是不限定於成形輥子對裝置之輥軋裝置， 爲了達到前述目的，而具有：可在本身的中心線周圍旋轉 且可朝軸方向移動地被支承之輥子；具備可朝與前述輥子 的軸方向相同方向移位的移位構件，前述移位構件對於前 述輥子的中心軸線位置賦予軸向力，使前述輥子朝軸方向 (5) 1235707 移動之軸方向位置調整手段；以及使前述輥子旋轉的旋轉 驅動手段。 本發明之輥軋裝置是前述軸方向位置調整手段包括由 藉由馬達來旋轉驅動之螺旋棒構件；與與前述螺旋棒螺旋 卡合而停止旋轉藉由前述螺旋棒的旋轉來朝與前述輥子 的軸方向相同方向移位之螺帽構件所構成的送進螺旋裝置 ，前述螺帽構件形成前述移位構件爲佳。 若根據該輥軋裝置的話，可藉由送進螺旋裝置來對輥 子的中心軸線確實地賦予軸向力。 在本發明之輥軋裝置，前述移位構件是藉由軸向力傳 達的旋轉滑動連接器來與前述輥子連接，使得輥子旋轉不 會傳達至包含送進螺旋裝置等的軸方向位置調整手段側。 此旋轉滑動聯結器是可藉由徑向滾動軸承、與軸向滾動軸 承的組合來構成，在結構各部可消除滑動機構，以作成全 部皆爲高剛性的滾動機構，來消除黏滑問題。 本發明之輥軋裝置，前述旋轉驅動手段，是包含：在 較前述旋轉滑動聯結器更靠前述輥子側的輥子軸，藉由滑 動鍵、栓槽等，以扭力傳達關係所連接的齒輪、及將前述 齒輪加以旋轉驅動的馬達。藉此，能夠將旋轉驅動手段與 軸方向位置調整手段集中於輥子的其中一方的軸端側（驅 動側），而提高了操作性、維修性。 爲了達到上述目的，本發明之輥軋裝置是針對包含相 互平行地對峙而加以設置的2個輥子，在輥子間使薄片通 過而加以成形之輥軋裝置，其中一方的輥子是藉由上述發 -8 - (6) 1235707 明之具有軸方向位置調整手段的輥軋裝置的輥子來構成’ 另一方的輥子可對前述一方的輥子接合分離於徑方向爲佳 〇 本發明之輥軋裝置是2個輥子可分擔各自軸方向相位 調整與輥子間隙開關的功能，而能謀求機構的簡單化與高 構成化。 本發明之輥軋裝置的輥子是在外周面雕刻有花紋的賦 形成形用輥子爲佳，能夠高精度地進行光學用塑膠薄片等 的賦形成形。 【實施方式】 以下，參照圖面詳細說明本發明的實施形態。第1至3 圖顯示本發明之輥軋裝置RA的一實施形態。 此輥軋裝置RA是作爲具有：經由在混凝土基底或基 底框架1 0的前部（第1圖的下側）左右以螺栓固定的2個軸 承箱1 2、1 3可朝軸方向移動地支承的第1輥子1 1 ;與經由 在框架1 0的後部左右可前後移動地設置的2個軸承箱4 6、 4 7與上述第1輥子1 1平行地支承之第2輥子4 8之形成輥子對 型的輥軋裝置來構成。 聿比車L裝置R A疋具備·包含用來旋轉驅動第1輕子η 的馬達2 5之第1旋轉驅動系統D r 1 ;包含用來旋轉驅動第2 輥子4 8的馬達6 1之第2旋轉驅動系統Dr2 ;包含用來使第1 輥子1 1朝軸方向移動的馬達4 3之第1移動驅動系統Dr3 ; 以及包含用來使第2 $昆子4 8朝徑方向（即，前後方向）水 -9- (7) 1235707 平移動的馬達對5 6、5 7之第2移動驅動系統d r 4。各驅動 系統的馬達2 5、4 3、5 6、5 7、6 1是由設在框架i 〇的左端之 操作面板（未圖示）內的控制部所控制。 在上述框架1 0，於該輕子操作側1 0 A與輕子驅動側 1 0 B的各前部配設固定有第1輥子1 1的軸承箱1 2、1 3，又 在輥子操作側1 〇A與輥子驅動側1 0B的各後部配設有朝前 後延伸的線性導件4 4、4 5。這兩個線性導件4 4、4 5是將第 2輥子4 8的軸承箱4 6、4 7朝前後導引，對於第！輥子丨丨由其 徑方向接近·離開。 第2輥子4 8的軸承箱1 2、1 3是在內部具有圓筒狀徑向 滾動軸承5 1、5 2，（在驅動側的軸承箱4 7的情況時）更具 有圓筒狀軸向滾動軸承5 4，藉此將第2輥子4 8 (更詳細而 言，在其左右兩端一體形成的輥子軸4 9、5 0 )可在本身的 中、軸線周圍S疋轉、且不朝軸方向移動地支承著。 上述第1及第2輥子1 1、4 8是作爲相互平行地對峙之賦 形成形用輥子對來發揮功能，在各輥子1 1、4 8的外周刻設 有複數個圓周溝槽狀的花紋1 1 A、48 A。 在此，說明第1旋轉驅動系統Dr 1。 第1輥子11的驅動側之輥子軸1 5是其軸端藉由突緣接 頭式聯結器1 8同軸地連接於輥子驅動軸1 9。此輥子驅動軸 1 9是朝第1輥子1 1的軸心方向延伸，將固定於框架1 0的驅 動側10B的齒輪箱20的中空齒輪軸22貫通於其軸方向。中 空齒輪軸2 2是藉由徑向滾動軸承2 1，與輥子驅動軸1 9共軸 地旋轉自如地支承著。輥子驅動軸1 9與中空齒輪軸22是經 -10- (8) 1235707 由鍵或栓槽等的滑動卡合元件2 3，相互地可朝軸方向移位 且可傳達轉動扭力地連接著。中空齒輪軸22支承驅動齒輪 24 ° 在上述齒輪箱2 0安裝有第1輥子1 1的旋轉驅動馬達2 5 ’安裝於此馬達2 5的馬達軸2 6之齒輪2 7嚙合於上述驅動齒 輪2 4，將馬達2 5的旋轉力傳達至第丨輥子；t丨，使此輥子！ i 旋轉於其軸心周圍。 其次說明第1移動驅動系統Dr3。 此移動驅動系統Dr3是作爲第1輥子1 1的軸方向位置 調整手段或花紋相位調整手段來構成的，如第3圖所示， 具有：包括在第1輥子1 1的軸方向可移位的移位構件3 4、 以螺旋使此移位構件3 4進退之後述的進給螺旋機構（3 6、 3 8 )之軸方向移位調整手段3 3 ;及將因應上述移位構件3 4 的移位量（即，伴隨螺旋送進之進退量）的軸向力傳達至 第1輥子1 1的軸向力傳達手段TF，此軸向力傳達手段TF 是包括：可與移位構件34滑動旋轉地卡合之旋轉滑動聯結 器2 8、連結於此聯結器2 8的第1輥子1 1之驅動軸1 9及輥子 軸1 5 〇 即，輥子驅動軸19與移位構件34是藉由聯結器28可滑 動旋轉地連結著。此聯結器28是包含固定有輥子驅動軸19 的軸端之旋轉盒2 9、與將移位構件3 4固定於軸端之具有突 緣的連結軸32，這些旋轉盒29及連結軸32是共軸（即，均 與$昆子驅動軸1 9同軸地）配置’連結軸3 2是藉由固定配置 於旋轉盒2 9內的徑向滾動軸承3 0與軸向滾動軸承3 1 ’對於 -11 - 1235707 Ο) 旋轉盒2 9不能朝軸方向移位，並且可相對旋轉地支承著。 軸向滾動軸承3 1是藉由預先賦予荷重，來消除軸方向的跳 動。 旋轉滑動聯結器2 8是藉由上述徑向滾動軸承3 〇與軸向 滾動軸承3 1的組合’來遮斷阻止輥子驅動軸丨9側的旋轉朝 移位構件3 4的傳達’而將由移位構件3 4所承受的軸向力傳 達至輥子驅動軸1 9的軸心。 移位構件34是包括：受到固定於框架丨〇的線性導件37 所導引，可朝第1輥子丨丨的軸方向移位的滑動底座（base )3 5 ;與不能旋轉地固定於此滑動底座3 5的滾珠螺帽構件 3 6。此滾珠螺帽構件3 6是同軸配置於第1輥子丨丨的軸心之 延長線上，螺合於滾珠螺桿3 8。 滾珠螺桿3 8是藉由設在固定於框架1 〇的軸承箱3 9內之 徑向滾動軸承4 0及軸向滾動軸承4 1可旋轉地支承，經由軸 接頭4 2連結於相位調整用減速機馬達4 3，而受到此馬達4 3 所驅動。 受到馬達4 3所旋轉驅動的滾珠螺桿3 8是將包含球型螺 帽構件3 6的移位構件3 4移位於第1輥子1 1的軸方向。此移 位隨著所對應的軸向力，由旋轉滑動聯結器2 8傳達至輥子 驅動軸1 9，進一步由輥子軸1 5傳達至第1輥子1 1，使此輥 子1 1朝軸方向移動。藉由此軸方向移動，進行輥子1 1在軸 方向的相位調整。 上述輥子軸1 4、1 5、突緣聯結器1 8、輥子驅動軸1 9、 旋轉滑動聯結器2 8的旋轉盒2 9及連結軸3 2、滾珠螺帽構件 -12- (10) Ϊ235707 3 6、以及滾珠螺桿3 8是其旋轉中心線位於第1輥子Π的軸 心的延長線上。 因此，來自於移位構件3 4的軸向力施加於第1輥子1 1 的軸心，使此輥子1 1不會產生以往的偏置，而朝軸方向移 動，因此，不會伴隨有偏置所引起之彎曲動量，而可高精 度地進行在軸方向的相位調整。 其次說明第2旋轉驅動系統Dr2。 第2輥子4 8是其驅動側的輥子軸5 0的軸端藉由史密特 聯結器等的等速自如接頭6 0來連結於輥子旋轉驅動馬達6 1 的馬達軸6 2，藉此來旋轉驅動。即，馬達6 1的旋轉扭力藉 由馬達軸6 2及等速自如接頭6 0傳達至輥子軸5 0，使第2輥 子4 8在其軸心周圍旋轉。 其次說明第2移動驅動系統Dr4。 第2輥子48的軸承箱46、47是藉由受到左右的輥子間 隙調整用馬達5 6、5 7所驅動的送進螺絲5 8、5 9，朝輥子徑 方向平行移動，進行第1輥子1 1與聯結器1 8之間的間隙調 整（開關動作）。 在輥軋裝置R A，第1輥子1 1與第2輥子4 8分擔軸方向 相位調整功能與輥子間隙開關功能，因此可謀求機構的簡 單化’消除不明確動作，可進行高精度的賦形成形。 [發明效果] 如以上所述，在本發明之輥軋裝置，進行軸方向相位 言周整時，不會產生以往之偏置，因此能夠迴避偏置所引起 -13- (11) 1235707 的翹起現象，且因使軸方向相位調整功能與輥子間隙開關 功能分擔於2個輥子，所以可迴避剛性不足所造成的彈性 變形，而能進行高精度的賦形成形。 【圖式簡單說明】 第1圖是顯示本發明之輥軋裝置的一實施形態的平面 圖。 第2圖是第1圖的輥軋裝置的正面圖。 第3圖是第1圖的輥軋裝置局部之骨架圖。 [圖號說明] 1 0…框架 1 1…第1輥子 1 4、1 5…輥子軸 1 9…輥子驅動軸 2 5…輥子旋轉驅動馬達 29…旋轉盒 30…徑向滾動軸承 3 1…軸向滾動軸承 3 3···軸方向移位調整手段 3 4…移位構件 38…滾珠螺桿 48…第2輥子 49、50…輥子軸 -14- (12) 1235707 56、57···輥子間隙調整用馬達 6 1…輥子旋轉驅動馬達 Drl…第1旋轉驅動系統 Dr2···第2旋轉驅動系統 Dr3…第1移動驅動系統 Dr4··.第2移動驅動系統 TF…軸向力傳達手段1235707 (1) 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a rolling device, and more particularly, to a rolling device suitable for forming an optical plastic sheet. [Prior Art] Optical plastic sheets, such as lens plates used in rear projection screens, have uneven patterns formed on both the front and back surfaces. The forming of this pattern is performed by using a rolling device in which a pair of forming rollers for forming a pattern is engraved in parallel on the outer periphery, and the sheet is formed by pressing a sheet between the pair of rollers to form a sheet. Flowers (see Patent Document 1). To perform this shaping, it is necessary to adjust the phase of the relief pattern on the surface in the axis direction of the roller. This phase adjustment is performed by using one of the roller pairs as a reference roller and moving the other roller in the axial direction. In such a conventional rolling device using a forming roller pair, for example, as a basic structure for forming a transparent sheet, a roller rotation driving mechanism is provided coaxially with the roller, and the seat plate of the bearing box supporting the roller shaft can be oriented in the axial direction of the roller. An axis-direction position adjustment mechanism is provided for moving the seat plate to perform phase adjustment in the axial direction by shifting a plurality of surface cones or the like in the roller axis direction (see Patent Document 2). In this conventional roller device, one of the rollers forming a pair of opposing rollers is used as an absolute reference roller, the bearing box supporting the roller is fixed to the frame, and the bearing box of the other roller is used to open and close the gap between the rollers. The structure can move in the direction (radial direction) approaching and leaving the opposing roller -4- (2) 1235707. That is, one of the opposing rollers is fixed, and the other roller is moved (closed) in parallel with it to adjust the gap between the rollers to form a plastic sheet. Therefore, the phase adjustment function in the axial direction of the roller pair and the gap switch function in the radial direction can be concentrated on the movable one-sided roller (see Patent Document 2). [Patent Document 1] Japanese Patent Application Laid-Open No. 59-96920 [Patent Document 2] Japanese Patent Application Laid-Open No. 1 0-3474 8 [Summary of the Invention] [Problems to be Solved by the Invention] For phase adjustment in the axial direction of the roller, 'required The corresponding thrust force, that is, the axial force, varies according to the forming conditions of the sheet, and here is based on 30 KN. Furthermore, in the conventional phase adjustment mechanism in the axial direction, the seat plate is shifted toward the axis of the roller and is offset in the radial direction of the roller. Therefore, when a thrust is applied during the phase adjustment, a bending moment (momentum) is generated in the roller supporting portion, and the elements of the phase adjustment mechanism in the axial direction are warped. This lifting phenomenon causes the phase adjustment mechanism to become stick-slip (s t i c k s 1 i p), which cannot obtain fine and high-precision positioning accuracy, and deteriorates reproducibility. The precision required for the forming of optical plastic sheets such as lens plates is in the direction of precision, and the phase error between the patterns on the surface of the sheet (embossed patterns) is required to be less than 1/4 of the past. Installation (3) 1235707 cannot easily meet this condition. In the conventional device, since the position of the roller and the rotation of the roller are based on the roller on the fixed side, the reference roller is provided with a mechanism for driving the rotation, so that the axial phase adjustment function and the roller gap switch function are concentrated on the other side. Rollers, the structure becomes complicated, and the mechanism is limited in terms of rigidity. Therefore, due to the stress during phase adjustment, elastic deformation commensurate with rigidity will be caused, which will complicate the mechanism and cause complicated operations, and φ will change depending on the operating state. In addition, a warping phenomenon caused by elastic deformation and offset caused by insufficient rigidity occurs in a complex manner. Therefore, it is difficult to specify a specific change factor, and it is difficult to achieve a high-precision forming shape suitable for a user's needs. The present invention has been developed in view of the foregoing circumstances, and an object thereof is to provide an elastic deformation caused by insufficient rigidity caused by the occurrence of a warping phenomenon caused by a bias and an insufficient rigidity, and is suitable for high-precision forming. Rolling device. φ [Means for solving the problem] In order to achieve the above object, the rolling device of the present invention is formed by a first roller that can move in the axial direction and a second roller that can move in parallel with the first roller. In the light-rolling device of the present invention, the phase adjustment can be performed with the first roller that can be moved in the axial direction, so that the axial direction of the roller can be adjusted without accompanying the bending momentum caused by the offset. -6- (4) 1235707 The rolling device of the present invention preferably has a position adjusting means for adjusting the position of the first roller in the axial direction. The position adjusting means is an axial force transmission means having a displacement member capable of being screwed in the axial direction of the first roller, and an axial force transmitting the axial force corresponding to the feed amount of the displacement member to the first roller. Better. It is preferable that the axial force transmission means includes a coupling which is slidably rotatably engaged with the displacement member, and a roller shaft of the first roller connected to the coupling. The coupling is preferably formed by a combination of a radial rolling bearing and an axial rolling bearing. The rolling device of the present invention is provided with driving means for rotationally driving the first roller, and the driving means preferably includes a torque transmitting member slidably engaged with the roller shaft in the axial direction. It is preferable that the first roller is constituted by a forming roller having a pattern engraved on an outer peripheral surface. The first and second rolls are preferably a pair of rolls for sheet forming. Therefore, the roll of the rolling device of the present invention is a roll for forming with a pattern engraved on the outer peripheral surface. When forming, the phase in the axial direction of the roll can be adjusted with high accuracy. In addition, the present invention is not limited to a rolling device of a forming roller pair device, and in order to achieve the above-mentioned object, it has a roller supported to be rotatable around its own centerline and movable in the axial direction; A displacement member that displaces the same axial direction of the roller, the displacement member imparts an axial force to the center axis position of the roller, and an axial position adjustment means for moving the roller in the axial direction (5) 1235707; and Rotary driving means for roller rotation. In the rolling device of the present invention, the axial position adjusting means includes a screw rod member driven by a motor to rotate; the screw is engaged with the screw rod to stop rotation, and the rotation of the screw rod is directed toward the roller. In the feeding screw device composed of a nut member displaced in the same direction in the axial direction, the nut member preferably forms the displacement member. According to this rolling device, an axial force can be reliably given to the central axis of the roller by the feeding screw device. In the rolling device of the present invention, the displacement member is connected to the roller by a rotary sliding connector transmitted by an axial force, so that the rotation of the roller is not transmitted to the axial direction position adjustment means including a feeding screw device, etc. . This rotary sliding coupling can be composed of a combination of radial rolling bearings and axial rolling bearings. The sliding mechanism can be eliminated in each part of the structure to create a highly rigid rolling mechanism in all parts to eliminate stick-slip problems. In the rolling device of the present invention, the rotation driving means includes a gear connected by a torque transmission relationship through a sliding key, a bolt groove, etc. on a roller shaft closer to the roller than the rotary sliding coupling, and A motor that rotates the aforementioned gear. Thereby, it is possible to concentrate the rotation driving means and the axial direction position adjusting means on one of the shaft end sides (drive sides) of the roller, thereby improving operability and maintainability. In order to achieve the above object, the rolling device of the present invention is a rolling device which includes two rollers which are arranged facing each other in parallel, and passes through the rollers to form a sheet. One of the rollers is formed by the above- 8-(6) 1235707 The roller of the rolling device having the position adjustment means in the axial direction is constituted by the 'the other roller can be joined to and separated from the one roller in the radial direction. The rolling device of the present invention is two rollers. It can share the functions of phase adjustment of each axis direction and the function of the roller gap switch, and can simplify and increase the structure of the mechanism. The roller of the rolling device of the present invention is preferably a forming roller having a pattern engraved on an outer peripheral surface thereof, and can form a plastic sheet for optical use with high accuracy. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Figures 1 to 3 show one embodiment of the rolling device RA of the present invention. This rolling device RA is provided with two bearing housings 1, 2 and 3 which are fixed by bolts on the left and right sides of a concrete base or a base frame 10 (lower side in FIG. 1), and are supported so as to be movable in the axial direction. The first roller 11 is a roller formed by two bearing boxes 4 6 and 4 7 which are movably moved back and forth in the left and right of the rear of the frame 10 and a second roller 4 8 supported in parallel with the first roller 11. It is constituted by a pair of rolling devices.聿 The car L device RA 疋 is equipped with a first rotary drive system D r 1 including a motor 2 for rotationally driving the first lepton η, and a second motor 2 1 including a motor 6 for rotationally driving the second roller 4 8 Rotary drive system Dr2; the first moving drive system Dr3 containing a motor 4 3 for moving the first roller 11 1 in the axial direction; and the second moving drive system Dr3 for moving the second $ Kunzi 4 8 in the radial direction (that is, the front-rear direction) ) Shui-9- (7) 1235707 The second moving driving system dr 4 of the motor pair 5 6 and 5 7 for horizontal movement. The motors 2 5, 4 3, 5 6, 5 7, 6 1 of each drive system are controlled by a control section provided in an operation panel (not shown) at the left end of the frame i 〇. In the above frame 10, a bearing box 1 2, 1 3 to which the first roller 11 is fixed is arranged at each front of the lepton operating side 10 A and the lepto driving side 10 B, and on the roller operating side Linear guides 4 4 and 4 5 extending forward and backward are arranged at each rear portion of the 10A and the roller driving side 10B. These two linear guides 4 4 and 4 5 guide the bearing boxes 4 6 and 4 7 of the second roller 4 8 toward the front and rear. The roller approaches and leaves from its radial direction. The second roller 4 8 has a bearing housing 1 2 and 1 3 with cylindrical radial rolling bearings 5 1 and 5 2 (in the case of the bearing housing 4 7 on the drive side) and a cylindrical axial rolling bearing. 5 4 so that the second roller 4 8 (more specifically, the roller shafts 4 9 and 50 integrally formed at the left and right ends thereof) can be swiveled around its own center and axis without facing the axis. Supported movably. The first and second rollers 11 and 48 function as a pair of forming rollers for forming opposing pairs in parallel with each other. A plurality of circumferential groove-shaped patterns are engraved on the outer periphery of each of the rollers 1 and 4 and 8. 1 1 A, 48 A. Here, the first rotary drive system Dr 1 will be described. The roller shaft 15 on the driving side of the first roller 11 has its shaft end coaxially connected to the roller driving shaft 19 by a flange joint coupling 18. This roller driving shaft 19 extends in the axial direction of the first roller 11 and penetrates the hollow gear shaft 22 of the gear box 20 fixed to the driving side 10B of the frame 10 in the axial direction. The hollow gear shaft 22 is rotatably supported coaxially with the roller drive shaft 19 through a radial rolling bearing 21. The roller drive shaft 19 and the hollow gear shaft 22 are connected to each other via a sliding engagement element 2 3 such as a key or a bolt groove, which can be displaced in the direction of the shaft and can transmit rotational torque. The hollow gear shaft 22 supports the driving gear 24 °. The above-mentioned gear box 20 is equipped with a first drive roller 1 1 and a rotary drive motor 2 5 'Motor shaft 2 6 mounted on this motor 2 5 The gear 2 7 meshes with the drive gear 2 4. Transmit the rotation force of the motor 25 to the 丨 roller; t 丨, make this roller! i Rotate around its axis. Next, the first mobile drive system Dr3 will be described. This moving drive system Dr3 is constituted as an axial direction position adjustment means or a pattern phase adjustment means of the first roller 11. As shown in FIG. 3, it includes: the first roller 11 is displaceable in the axial direction. Displacement member 34. Axial-direction displacement adjustment means 3 3 of the feeding screw mechanism (36, 38) described later after the displacement member 34 is advanced and retreated with a spiral; and according to the above-mentioned displacement member 3 4 The axial force of the displacement amount (that is, the advance and retreat amount accompanying the screw feed) is transmitted to the first roller 11 in the axial force transmission means TF. The axial force transmission means TF includes: it can slide with the displacement member 34 The rotationally sliding coupling 28 that is rotationally engaged, the driving shaft 19 and the roller shaft 15 of the first roller 11 1 connected to this coupling 28, that is, the roller driving shaft 19 and the displacement member 34 are connected by The coupler 28 is slidably connected to each other. The coupling 28 is a rotary box 29 including a shaft end to which a roller drive shaft 19 is fixed, and a connecting shaft 32 having a flange to fix the displacement member 34 to the shaft end. These rotary boxes 29 and the connecting shaft 32 are Coaxial (ie, both coaxial with $ 昆 子 driving shaft 1 9) is arranged 'the connecting shaft 3 2 is a radial rolling bearing 3 0 and an axial rolling bearing 3 1 which are fixedly arranged in the rotating box 2 9' for -11 -1235707 Ο) Rotary box 2 9 cannot be shifted in the axial direction and is supported for relative rotation. The axial rolling bearing 31 eliminates runout in the axial direction by applying a load in advance. The rotary sliding coupling 28 is a combination of the above-mentioned radial rolling bearing 30 and the axial rolling bearing 31 to block transmission of the rotation of the roller drive shaft 9 to the displacement member 34, and the displacement member will be replaced by the displacement member. The axial force received by 3 4 is transmitted to the shaft center of the roller driving shaft 19. The displacement member 34 includes a sliding base (base) 3 5 guided by a linear guide 37 fixed to the frame 丨 0 and capable of being displaced in the axial direction of the first roller 丨 丨; and a non-rotatably fixed thereto Slide the ball nut member 3 6 of the base 3 5. The ball nut member 36 is coaxially disposed on an extension line of the axis of the first roller 丨 丨 and is screwed to the ball screw 38. The ball screw 38 is rotatably supported by a radial rolling bearing 40 and an axial rolling bearing 41 provided in a bearing box 3 9 fixed to the frame 10, and is connected to a phase adjustment speed reducer motor via a shaft joint 4 2 4 3, which is driven by this motor 4 3. The ball screw 38, which is rotationally driven by the motor 4, 3, moves the displacement member 3 4 including the ball nut member 36 in the axial direction of the first roller 11. With the corresponding axial force, this displacement is transmitted to the roller driving shaft 19 by the rotary sliding coupling 2 8 and further transmitted to the first roller 11 by the roller shaft 15 to move the roller 11 in the axial direction. . By moving in this axial direction, the phase adjustment of the roller 11 in the axial direction is performed. The above-mentioned roller shafts 1 4 and 1 5, flange couplings 1 8, roller driving shafts 1 9, rotary box 2 of rotary sliding coupling 2 8 and connecting shafts 3 2, ball nut members -12- (10) Ϊ235707 3, 6 and the ball screw 38 are those whose center line of rotation is located on the extension of the axis of the first roller Π. Therefore, the axial force from the displacement member 34 is applied to the shaft center of the first roller 1 1, so that the roller 11 does not move in the axial direction without generating a conventional offset, so there is no accompanying offset It is possible to adjust the phase momentum in the axial direction with high precision due to the bending momentum caused by the positioning. Next, the second rotation driving system Dr2 will be described. The second roller 48 is the shaft end of the roller shaft 50 on the driving side thereof, and is connected to the motor shaft 6 2 of the roller rotation driving motor 6 1 by a constant speed joint 60 such as a Schmitt coupling or the like. Rotary drive. That is, the rotational torque of the motor 61 is transmitted to the roller shaft 50 via the motor shaft 62 and the constant velocity free joint 60, so that the second roller 48 is rotated around its axis. Next, the second mobile drive system Dr4 will be described. The bearing boxes 46 and 47 of the second roller 48 are driven in parallel by the feed screws 5 8 and 5 9 driven by the left and right roller gap adjusting motors 5 6 and 5 7 to perform the first roller 1. Gap adjustment (switching action) between 1 and coupling 1 8 In the rolling device RA, the first roller 11 and the second roller 48 share the axis-phase phase adjustment function and the roller gap switch function. Therefore, the mechanism can be simplified. . [Effects of the Invention] As described above, in the rolling device of the present invention, the conventional offset is not generated when the axial phase is rounded, so it can avoid the warp of -13- (11) 1235707 caused by the offset. This phenomenon occurs, and because the axis phase adjustment function and the roller gap switch function are shared between the two rollers, elastic deformation caused by insufficient rigidity can be avoided, and highly accurate forming can be performed. [Brief Description of the Drawings] Fig. 1 is a plan view showing an embodiment of a rolling device according to the present invention. Fig. 2 is a front view of the rolling device of Fig. 1. Fig. 3 is a skeleton diagram of a part of the rolling device of Fig. 1. [Illustration of drawing number] 1 0… frame 1 1… 1st roller 1 4, 1 5… roller shaft 1 9… roller drive shaft 2 5… roller rotation drive motor 29 ... rotation box 30 ... radial rolling bearing 3 1 ... axial Rolling bearings 3 3 ··· Axial direction displacement adjustment means 3 4 ... Displacement member 38 ... Ball screw 48 ... Second roller 49, 50 ... Roller shaft -14- (12) 1235707 56, 57 ... Roller gap adjustment Motor 6 1 ... Roller rotation drive motor Drl ... First rotation drive system Dr2 ... Second rotation drive system Dr3 ... First movement drive system Dr4 ... Second movement drive system TF ... Axial force transmission means