200819309 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種事務機器，特別是指一種配合一 掃描單元可進行雙面掃描且可回復原稿順序的雙面送紙裝 置。 【先前技術】 如圖1所示，現有一種自動送紙裝置（美國專利第 5,784,680號案），是裝設在一影像形成裝置1上，並包含一 φ 機殼單元2、一設置在該機殼單元2内部的第一通道301、 一與該第一通道301對接的第二通道302、一設於該第二通 道302上方的翻面通道303、一彙集於該第二通道302與該 翻面通道303外側的分流通道304、——對應該第一通道301 的進紙滚輪組4、一設於該第一通道301中的第一搬運滚輪 組501、一設於該第二通道302中的第二搬運滾輪組502、 一設置在該第二通道302與該翻面通道303之間的排紙滾 輪組6、一設置在該排紙滾輪組6外側的返送滾輪組7、一 • 設置在該排紙滾輪組6與返送滾輪組7之間的切換爪8及 \ 一設在該排紙滾輪組6内侧的迴轉單元9。該機殼單元2具 ^ 有呈上下間隔設置的一進紙托盤201、一上導引托盤202及 一下出紙托盤203。該切換爪8是可由一趨近於該分流通道 304的第一位置，切換成一遠離於該分流通道304的第二位 置。該迴轉單元9具有一圍設在該排紙滚輪組6内側且呈 彎弧形的迴轉曲道90Γ及一位在該迴轉曲道9ΌΓ與該翻面 通道303銜接處的擋爪902’，該擋爪902’可由一使該翻面 5 200819309 通道303及分流通道304呈暢通的開放位置，切換成一阻 擋在該翻面通道303與分流通道304之間的阻擋位置。 當文件要進行雙面掃描，且由上而下依序地排放在該 進紙托盤201上時，一開始該切換爪8是保持在朝下（如 假想線所示）的位置，原本朝上的第一表面I受到一第一 感應器901的感應即可控制該進紙滾輪組*帶動，而被移 入該第一通道301中，並利用該第一搬運滾輪組5〇1之驅 動而經過一第二感應器902及該影像形成裝置1的一掃描 器窗口 101，利用該第二感應器902連線控制啟動掃描的動 作。當文件的一第一表面I通過該掃描器窗口 1〇1後會再 文到该第二搬運滾輪組5〇2及排紙滾輪組6的運送，就可 由第一通道3 02轉入分流通道3 04，並由該返送滾輪組7帶 動而朝該上導引托盤202產生局部移出（此時，該文件的 第一表面I已朝下，且一第二表面！！則朝上）。 接著，虽一第二感應器903感應到文件的一後端時， 或是當-第四感應H 9G4延時感應文件的—後端已通過預 定長度時，隨即控制該返送滾輪組7反轉，並控制該切換 爪8向上擺動（如實線所示），且將通往該第二通道3〇2的 閘口予以封閉、促使該翻面通道3〇3保持暢通，此時，該 擋爪9〇2位在開放位£ (如實線所示），文件即可經由該 紙滾輪組6且順著該翻面通道3G3輸送，且繼續朝該第一 通道301輸送。 ,^文件再經過第二感應器9G2感應時，可再連線控制 進打知描的動作、控制該切換爪8向下擺動（如假想線所 200819309 示），且當文件之第二表面π經過掃描器窗口 101後，又再 利用該第二搬運滾輪組502、排紙滾輪組6之帶動，可再送 至該分流通道304 (此時，文件的第二表面辽已朝下，且第 一表面I則朝上）。 當該第三感應器903感應到文件的後端時，控制該返 送滾輪組7反轉，並控制該切換爪8向上擺動（如實線所 示），且將通往該第二通道302的閘口予以封閉，又控制該 迴轉單元9的擋爪902,向上擺動並阻擋在該翻面通道3〇3 的一開口（如假想線所示），則文件就會由該分流通道3〇4 ，並繞過迴轉曲道901’而輸送至該下出紙托盤2〇3中，此 時，文件的第一表面ί已朝下，第二表面π則朝上，並可 由下朝上依序排放，且可保持掃描後的順序與原稿一致。 雖然，這種送紙裝置可完成雙面掃描，且掃描後的文 件順序與原稿一致，但仍具有下列缺失·· 一、 這種送紙裝置為了達成掃描後的文件順序與原稿 一致，就必須設置擋爪902’、切換爪8以及用來控制擋爪 902、切換爪8動作的驅動元件，使得整體之構件繁多、結 構複雜。 、 ^ 二、 文件的第二表面η經掃描後，會進入該返送滾輪 組7 ,再由該返送滚輪組7反轉經由該迴轉曲道列厂出紙， 此時，該翻面通道303及第一通道3〇1的延伸長度必須大 於文件長度，否則文件的前、後端會在該返送滾輪組7產 生重豐’無法完成送紙。為了要避免上述情形，該翻面通 道303及第一通道3〇1的延伸長度必須大於文件長度，則 200819309 整體的長度及體積也會較大。 【發明内容】 因此，本發明之目的，即在提供一種可完成雙面掃描 且掃描後文件的排序會與原稿一致之可回復原稿順序的雙 面送紙裝置。 於是，本發明可回復原稿順序的雙面送紙裝置，包含 一機殼單元及一切換單元。該機殼單元具有一運紙通道、 刀歧地與該運紙通道銜接的翻面通道、一連通該運紙通 道與翻面通道的分流通道及一位在該分流通道外側的迴轉 通道，該運紙通道具有一進紙端口、一與該進紙端口呈上 下设置的排紙端口及一介於該進紙端口與排紙端口間的掃 描區段，該翻面通道具有一對應該排紙端口的外侧端口及 一與該運紙通道銜接的内側端口，該分流通道趨近於該排 紙端口及外侧端口，該迴轉通道呈彎弧狀，並具有一與該 排紙端口接通的第一端口及一與該分流通道匯集且接通在 該外側端口内侧的第二端口。該切換單元具有一柩設在該 運紙通道與分流通道銜接處的切換爪、一安裝在該第一端 口與該運紙通道銜接處的第一切換片及一安裝在該第二端 口與該翻面通道銜接處的第二切換片，該切換爪在一第一 位置時’該掃描區段朝該分流通道呈暢通狀，該切換爪在 第一位置時’可阻斷該掃描區段朝該分流通道暢通的路 徑且使該掃描區段朝該排紙端口呈暢通狀，該第一、二切 換片是以可撓性材質製成片狀，且該第一切換片是可由該 掃描區段朝該排紙端口被單向掣動地阻斷在該掃描區段與 8 200819309 該迴轉通道銜接處，且使該排紙端口朝第一端口常保持暢 通狀，該第二切換片是可由該分流通道及該迴轉通道朝該 翻面通道被單向掣動地封阻在該第二端口上，且使該外側 端口朝内侧端口常保持暢通狀。 藉此，利用該切換爪可在該第一、二位置之間切換， 以及該第一、二切換片呈可被單向掣動之作用，不僅可使 文件完成雙面掃描，且掃描後的文件排列順序與原稿可保 持一致，且結構簡化、不會增加整體體積。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之一個較佳實施例的詳細說明中，將可 清楚的呈現。 如圖2所示，是一組合示意圖，本發明可回復原稿順 序的雙面送紙裝置較佳實施例，是適用於裝設在一影像形 成裝置200 (例如影印機或掃描器）上，且可供具有一第一 表面310及一第二表面320的文件3〇〇達到自動輸送及雙 面掃描目的，該影像形成裝置200具有一掃描單元21〇。該 又面送紙裝置包含一機殼單元10及安裝在該機殼單元1〇 内部的一進紙滾輪組20、一搬運滾輪組3〇、一排紙滾輪組 40、一位在該排紙滾輪組4〇内侧的切換單元5〇、一感應單 元60、一中繼滾輪組7〇。 配合參閱圖3，為一局部放大示意圖，該機殼單元1〇 了有一概呈C形的運紙通道i〗、一分歧地銜接在該運紙通 道11 一中段的翻面通道12、一連通該運紙通道u與該翻 9 200819309 面通道12的分流通道13、一位在該分流通道13外側的迴 轉通道14、一位在該迴轉通道14外側的下出紙托盤15、 一位在該下出紙托盤15上方的上出紙托盤16及一位在該 上出紙托盤16上方且對應該運紙通道11的進紙托盤π。 該運紙通道11具有一進紙端口 Π1、一與該進紙端口 111 呈上下設置的排紙端口 112及一介於該進紙端口 111與排紙 端口 112間的掃描區段113，該翻面通道12具有一對應該 排紙端口 112的外側端口 121及一與該運紙通道u銜接的 内側端口 122 ’該分流通道13趨近於該排紙端口 112及該 外側端口 121，並具有一與該運紙通道^銜接的引入端口 131及一與該翻面通道12銜接的引出端口 132。該迴轉通 道14緊鄰在該分流通道13 一侧且呈彎弧狀，並具有一與 該排紙端口 112接通的第一端口 141及一與該引出端口 132 匯集且接通在該外侧端口 121内侧的第二端口 142，該第一 端口 141具有一對應於該分流通道13的内側面141，及一與 該内側面141’相對且對應於該排紙端口 112的外側面141 ” ，該第二端口 142具有一對應於該内侧端口 122的第一側 部142,及一與該第一側部142，相對且對應於該外侧端口 i2i 的第二侧部i42，，’且該運紙通道u更具有一相對於該第一 端口 141的抵止告p 114。該掃描單元21〇位在該内侧端口 !22與該排紙端〇 112之間的掃描區段ιΐ3上，且位在該機 殼單元10的一底部。 該進紙滾輪組20是軸設在該進紙端口 1U上。 該搬運滚輪組30疋軸設在該内側端口 與該掃描單 10 200819309 元210之間。 該排紙滾輪组40具有一主動輪41及二分設在該主動 輪41下、上兩侧且分別對應於該排紙端口 112及該外側端 口 121的第一、二從動輪42、43，該第一、二從動輪42、 43可受該主動輪41之掣動而相對於該主動輪41產生相對 轉動。 配合參閱圖2及圖3 ’該切換單元50具有一樞設在該 運紙通道11與分流通道·13銜接處的切換爪51、一安裝在 該第一端口 141與該運紙通道u銜接處的第一切換片52及 女裝在該第二端口 142與該翻面通道12銜接處的第二切 換片53。該切換爪51具有一轴設在該引入端口〗3〗與該第 ^0 口 141之間的樞接端部511及一與該樞接端部5丨1呈相 反η又置且可在該運紙通道Η及該引入端口 131之間擺動的 擺動端部512。該第-切換片52是以具有可撓性的塑膠片 製成，是可由該掃描區段113朝該排紙端口 112被單向掣動 地阻斷在該掃描區段113與該迴轉通道14銜接處，且使該 排紙端口 112朝該第一端口 141常保持暢通狀，並具有一固 定在該内側面141，的第一固定端部521及一與該第一固定 端部⑵才目反設置且利用本身之材質特性可抵止在該抵止 部113的第-掀開端部522。第二切換片53也是以且有可 撓性的塑膠片製成，且可由該分流通道13及該迴轉通道Μ 朝該翻面通道12被單向掣動地封阻在該第二❹⑷上， 且使該外側端π 121朝該内侧端σ 122常保㈣通狀，並 具有一固定在該第一側_ 142’的第二固定端冑531及一與 11 . 200819309 該第二固定端部531相反設置且利用本身之材質特性可抵 止在該第二側部M2”上的第二掀開端部532。 該感應單元60具有一對應該進紙滚輪組2〇的第一感 應件61、一設置在該搬運滾輪組3〇與該掃描單元2ι〇間的 第二感應件62、一位在該第二端口 142與該外侧端口 121 間的第三感應件63及一位該第一端口 141與排紙端口 ιι2 間的第四感應件64。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transaction machine, and more particularly to a double-sided paper feeding device that can perform double-sided scanning in conjunction with a scanning unit and can restore the order of originals. [Prior Art] As shown in Fig. 1, an automatic paper feeding device (U.S. Patent No. 5,784,680) is mounted on an image forming apparatus 1 and includes a φ casing unit 2, which is disposed in the machine. a first channel 301 inside the shell unit 2, a second channel 302 that is in contact with the first channel 301, a turning channel 303 disposed above the second channel 302, and a second channel 302 and a turn a flow dividing channel 304 outside the surface channel 303, a paper feed roller set 4 corresponding to the first channel 301, a first transport roller set 501 disposed in the first channel 301, and a second transport path 302 a second carrying roller set 502, a paper discharge roller set 6 disposed between the second passage 302 and the turning passage 303, a return roller set 7 disposed outside the paper discharge roller set 6, and a setting The switching claws 8 and the switching unit 8 between the paper discharge roller group 6 and the return roller group 7 are provided on the rotary unit 9 inside the paper discharge roller group 6. The casing unit 2 has a paper feed tray 201, an upper guide tray 202, and a lower paper discharge tray 203 which are disposed at upper and lower intervals. The switching pawl 8 is switchable to a second position away from the shunting passage 304 by a first position proximate to the shunting passage 304. The slewing unit 9 has a curved curved track 90 围 enclosing the inside of the paper discharge roller set 6 and a pawl 902 ′ at a position where the turning track 9 衔 and the turning surface 303 are engaged. The pawl 902' can be switched to a blocking position between the turning channel 303 and the branching channel 304 by an open position in which the turning surface 5200819309 channel 303 and the branching channel 304 are unobstructed. When the document is to be scanned on both sides and is sequentially discharged from the top to the bottom of the paper feed tray 201, the switching claw 8 is initially held downward (as indicated by an imaginary line), originally facing upward. The first surface I is controlled by a first inductor 901 to control the paper feed roller set*, and is moved into the first passage 301 and driven by the first transport roller set 5〇1. A second sensor 902 and a scanner window 101 of the image forming apparatus 1 are connected to the second sensor 902 to control the operation of starting the scanning. When a first surface I of the document passes through the scanner window 1〇1 and then transports to the second carrying roller set 5〇2 and the paper discharge roller set 6, the first channel 302 can be transferred to the split channel. 3 04, and driven by the return roller set 7 to locally move out toward the upper guide tray 202 (at this time, the first surface I of the document has been facing downward, and a second surface!! is facing upward). Then, when a second sensor 903 senses a rear end of the file, or when the back end of the fourth sensing H 9G4 delay sensing file has passed the predetermined length, the return roller group 7 is controlled to be reversed. And controlling the switching claw 8 to swing upward (as indicated by the solid line), and closing the gate leading to the second passage 3〇2, so that the turning passage 3〇3 is kept open, and at this time, the stopping claw 9〇 With the 2 position in the open position (as indicated by the solid line), the document can be transported through the paper roller set 6 and along the flip path 3G3 and continue to be transported toward the first channel 301. When the ^ file is sensed by the second sensor 9G2, the connection can be controlled to control the movement of the stroke, and the switching claw 8 is controlled to swing downward (as shown by the imaginary line 200819309), and when the second surface of the document is π After passing through the scanner window 101, the second transport roller set 502 and the paper discharge roller set 6 are further driven to the split flow channel 304. At this time, the second surface of the document has been facing downward, and the first Surface I is facing up). When the third sensor 903 senses the rear end of the document, the return roller set 7 is controlled to be reversed, and the switching claw 8 is controlled to swing upward (as indicated by a solid line), and the gate to the second passage 302 is to be opened. Closing and controlling the pawl 902 of the swivel unit 9 to swing upward and block an opening in the flipping channel 3〇3 (as indicated by an imaginary line), the document will be passed from the shunting channel 3〇4, and It is conveyed to the lower paper output tray 2〇3 by bypassing the curved track 901'. At this time, the first surface ί of the document is facing downward, and the second surface π is facing upward, and can be discharged sequentially from the bottom to the top. And the order after scanning can be kept consistent with the original. Although the paper feeding device can perform double-sided scanning, and the file order after scanning is consistent with the original document, the following defects are still missing. 1. The paper feeding device must be in accordance with the original document order in order to achieve the consistency of the document sequence after scanning. The claw 902', the switching claw 8, and the driving elements for controlling the movement of the pawl 902 and the switching claw 8 are provided, so that the overall components are complicated and the structure is complicated. ^, after the second surface η of the document is scanned, it will enter the return roller group 7, and then the return roller group 7 reverses the paper output through the revolving track, at this time, the turning channel 303 and The extension length of the first channel 3〇1 must be greater than the file length, otherwise the front and back ends of the file will be heavy in the return roller group 7 and the paper feeding cannot be completed. In order to avoid the above situation, the extended length of the turned-up channel 303 and the first channel 3〇1 must be greater than the file length, and the overall length and volume of the 200819309 will also be large. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a double-sided paper feeding device which can perform double-sided scanning and which can sort the documents after scanning and which can match the original. Thus, the present invention can restore the original order of the double-sided paper feeding device, comprising a casing unit and a switching unit. The casing unit has a paper conveying passage, a turning passage which is coupled to the paper conveying passage, a diverting passage connecting the paper conveying passage and the turning conveying passage, and a rotary passage outside the diverting passage. The paper path has a paper feed port, a paper discharge port disposed above and below the paper feed port, and a scanning section between the paper feed port and the paper discharge port, the turn channel having a pair of paper discharge ports An outer port and an inner port that is connected to the paper path, the shunt channel is adjacent to the paper discharge port and the outer port, the turn channel is curved and has a first connection with the paper discharge port A port and a second port that is integrated with the shunt channel and connected to the inside of the outer port. The switching unit has a switching claw disposed at the junction of the paper path and the bypass channel, a first switching piece mounted at the junction of the first port and the paper path, and a second port mounted thereon a second switching piece at the junction of the turning channel, the switching claw is in a first position, the scanning section is unobstructed toward the dividing channel, and the switching claw is in the first position to block the scanning section toward The clearing path of the shunting channel and the scanning section are unobstructed toward the paper discharge port, the first and second switching pieces are formed into a sheet shape of a flexible material, and the first switching piece is readable by the scanning area The segment is unidirectionally slidably blocked in the scanning section and the pivoting passage of the 8 200819309, and the paper discharge port is always kept open toward the first port, and the second switching piece can be The diverting passage and the revolving passage are unidirectionally slidably blocked on the second port toward the turning passage, and the outer port is normally kept open toward the inner port. Thereby, the switching claw can be used to switch between the first and second positions, and the first and second switching sheets can be unidirectionally swayed, so that the file can be double-sided scanned and the scanned file can be completed. The arrangement order is consistent with the original, and the structure is simplified without increasing the overall volume. The above and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. As shown in FIG. 2, it is a combination diagram, and the preferred embodiment of the double-sided paper feeding device capable of returning the original order of the present invention is suitable for being mounted on an image forming apparatus 200 (for example, a photocopying machine or a scanner), and The document 3 having a first surface 310 and a second surface 320 can be used for automatic conveyance and double-sided scanning. The image forming apparatus 200 has a scanning unit 21A. The re-feeding device comprises a casing unit 10, a feeding roller set 20 installed inside the casing unit 1 , a conveying roller set 3〇, a row of paper roller sets 40, and a row of paper discharge rollers The switching unit 5〇 on the inner side of the roller group 4〇, a sensing unit 60, and a relay roller group 7〇. Referring to FIG. 3, which is a partially enlarged schematic view, the casing unit 1 has a C-shaped paper path i, a bifurcated channel 12 connected to a middle section of the paper path 11, and a communication. The paper path u and the split channel 13 of the turn surface 12 200819309, a turn channel 14 outside the split channel 13 , and a lower output tray 15 outside the turn channel 14 An upper paper discharge tray 16 above the lower paper output tray 15 and a paper feed tray π above the upper paper discharge tray 16 and corresponding to the paper transport path 11. The paper path 11 has a paper feed port Π1, a paper discharge port 112 disposed above and below the paper feed port 111, and a scanning section 113 interposed between the paper feed port 111 and the paper discharge port 112. The channel 12 has a pair of outer ports 121 to which the paper discharge port 112 is to be disposed and an inner port 122 that is coupled to the paper path u. The bypass channel 13 approaches the paper discharge port 112 and the outer port 121, and has a The paper path is connected to the lead-in port 131 and a lead-out port 132 that is connected to the flip-up channel 12. The revolving channel 14 is immediately adjacent to the side of the diverting channel 13 and has a curved shape, and has a first port 141 connected to the paper discharge port 112 and a collection and connection with the outlet port 132 at the outer port 121. a second port 142 on the inner side, the first port 141 has an inner side surface 141 corresponding to the shunt passage 13 , and an outer side surface 141 ′′ opposite the inner side surface 141 ′ and corresponding to the paper discharge port 112 . The second port 142 has a first side portion 142 corresponding to the inner port 122, and a second side portion i42 opposite to the first side portion 142 and corresponding to the outer port i2i, and the paper path The u further has a resisting p 114 relative to the first port 141. The scanning unit 21 is clamped on the scanning section ι 3 between the inner port !22 and the paper discharge end 112, and is located at A bottom of the casing unit 10. The paper feed roller set 20 is axially disposed on the paper feed port 1U. The transport roller set 30 is disposed between the inner port and the scanning unit 10 200819309 210. The paper roller set 40 has a driving wheel 41 and two points are disposed under the driving wheel 41. The first and second driven wheels 42 and 43 respectively on the upper side and corresponding to the paper discharge port 112 and the outer port 121, the first and second driven wheels 42 and 43 can be moved by the driving wheel 41 The driving wheel 41 is relatively rotated. Referring to FIG. 2 and FIG. 3, the switching unit 50 has a switching claw 51 pivoted at the junction of the paper path 11 and the branching channel 13 , and is mounted on the first port. a first switching piece 52 at the junction with the paper path u and a second switching piece 53 at the junction of the second port 142 and the turning channel 12. The switching claw 51 has an axis disposed at the introduction The pivoting end portion 511 between the port 3 and the port 141 and the pivoting end portion 5丨1 are opposite to each other and can be disposed between the paper path Η and the lead-in port 131 a swinging end portion 512. The first switching piece 52 is made of a flexible plastic sheet, and is slidably blocked by the scanning section 113 toward the paper discharge port 112 in the scanning section. 113 is engaged with the revolving channel 14 , and the paper discharge port 112 is always kept open toward the first port 141 and has The first fixed end portion 521 fixed to the inner side surface 141 and the first fixed end portion (2) are disposed oppositely and can resist the first opening end portion of the abutting portion 113 by using the material property of the inner side surface 141. 522. The second switching piece 53 is also made of a flexible plastic sheet, and can be blocked by the diverting channel 13 and the rotating channel 朝 toward the turning channel 12 by one-way swaying on the second cymbal (4). And the outer end π 121 is normally (four) connected to the inner end σ 122, and has a second fixed end 胄 531 and a pair 11 fixed to the first side 142 ′ ′. The 531 is oppositely disposed and can resist the second split end 532 on the second side portion M2" using its own material properties. The sensing unit 60 has a pair of first sensing members 61 that should be fed into the roller set 2〇, a second sensing member 62 disposed between the carrying roller group 3〇 and the scanning unit 2ι, and a second in the second a third sensing member 63 between the port 142 and the outer port 121 and a fourth sensing member 64 between the first port 141 and the paper discharge port ιι.
該中繼滾輪組70具有一掣動輪71及二分設在該掣動 輪71兩側且分別位在該運紙通道Π及該翻面通道12中的 辅助輪72。 以下說明本發明上述較佳實施例的操作情形： 如圖3、圖4所示，當文件3〇〇要進行雙面掃描，是由 上而下依序地排放在該進紙托盤17上，促使第一表面31〇 朝上、第二表面32〇朝下，該進紙滚輪組20受一動力源（ 圖未示）驅動即可將文件3GG帶人該運紙通道丨丨中，當該 第-感應件62感應到文件的—前端且延遲—段時間， :連線控制該掃描單元210啟動及控制該切換爪51擺動至 -第-位置（如圖3實線所示），該切換爪51的擺動端部 7伸設找觀料^卜錢崎純段⑴朝該分 流通道13呈暢通狀，同時控制該主動輪41往順時針方向 轉動’文# 3GG掃描（如圖4假想線所示）後就可由該運 :通道：導入該分流通道13 ’並利用文件3。〇前端頂開該 、， <弟一掀開端部532，且朝該外侧端口 121 移达’最後朝該第二從動輪43及該主動輪Μ《間產生局 12 200819309 部移出（如圖4假想線所示，此時，文件300的第一表面 31〇已朝下，第二表面32〇則朝上）。且當文件3〇〇的後端 已完全自該第二切換片53下方移出時，原本被頂開的第二 切換片53會利用本身材質之特性，而使得該第二掀開端部 532回復抵止在該第二侧部142”上。 接著，再如圖5所示，當第三感應件63感應到該文件 3〇〇的後端時，隨即控制該主動輪41反轉（即逆時針方向 轉動）’且配合該中繼滾輪組7〇的驅動，可將文件3〇〇再 由該翻面通道丨2朝該運紙通道11移送，當文件300前端再 文到該第二感應件62感應，在延遲一段時間後，可控制該 搬運滾輪組30將文件300朝該掃描單元210運送，且可連 線控制該掃描單元210啟動及控制該切換爪51擺動至一第 一位置（配合參閱圖3之假想線所示），該切換爪51的擺 動端部512伸設在該引入端口 13ι中且可阻斷該掃描區段 Π3朝該分流通道13暢通的路徑，且使該掃描區段113朝 該排紙端口 112呈暢通狀。且當文件300的第二表面32〇掃 描後，就可朝該排紙端口 112移送，且利用文件3〇〇前端頂 開該第一切換片52的第一掀開端部521 (如圖3假想線所 不）’最後朝該第一從動輪42及該主動輪41之間產生局部 移出（如圖5假想線所示，此時，文件300的第二表面320 朝下’第一表面310則朝上）。且當文件300的後端已完全 自該第一切換片52下方移出時，原本被頂開的第一切換片 52會利用本身材質之特性，而使得該第一掀開端部522回 復抵止在該抵止部114上。 13 200819309 如圖6所示，當該第四感應件64感應文件⑽的後端 時’又控制該主動輪41順時針轉動，文件3〇〇前端受到該 第-切換片52的導引，可由該第—端口 141導人該迴轉通 道14 :，並在頂開該第二切換片53後朝該外侧端口 i2i 方向移达’最後由該外侧端σ 121輸出並^至該上出紙托 盤16中’此時’文件3〇〇的第一表面31〇已朝下，且第二 表面32G則朝上，並可由下朝上依序排放，且可保持掃描 後的順序與原稿一致。 因此，本發明之送紙裝置不僅可完成雙面掃描，且掃 描後的文件300順序與原稿—致，並具有下列優點： 利用該切換爪51在第一、二位置之間產生切換， 以及利用該第-、二切換片52、53的可被單向掣動之作用 ’就可達到掃描後的文#鳩順序與原稿—致，且只需設 置一個切換爪51，整體結構簡單、組裝容易，可降低整體 製造成本。 二、如圖5、圖6所示，該文件300經過第二表面32〇 的掃描後，一直到該文件3〇〇後端受到該第四感應件64感 應，該主動輪41才會順時針轉動，且使文件300受到該第 二切換片53導引而導入該迴轉通道14中，所以，該翻面 通道12及第一通道η的延伸長度並不需要大於文件3⑼長 度’文件300的前、後端也不會有產生重疊的缺失，不僅 可以順利完成送紙，且整體的長度及體積也不需要增大。 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 14 200819309 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是現有一種自動送紙裝置的組合示意圖； 圖2是一組合示意圖，說明本發明可回復原稿順序的 雙面送紙裝置的一較佳實施例； 圖3是本發明上述較佳實施例之一局部放大示意圖； 圖4是本發明上述較佳實施例之一切換爪的動作示意 • 圖，說明該切換爪擺動至一第二位置； 圖5是本發明上述較佳實施例之一送紙示意圖；及 圖6是本發明上述較佳實施例之出紙動作示意圖。 15 200819309 【主要元件符號說明】The relay roller set 70 has a swaying wheel 71 and two auxiliary wheels 72 disposed on opposite sides of the swaying wheel 71 and located in the paper path Π and the turning channel 12, respectively. The following describes the operation of the above preferred embodiment of the present invention: As shown in FIG. 3 and FIG. 4, when the document 3 is to be scanned on both sides, it is sequentially discharged from the top to the bottom on the paper feed tray 17, The first surface 31 is urged upwards and the second surface 32 is facing downwards. The paper feed roller set 20 is driven by a power source (not shown) to carry the document 3GG into the paper path. The first sensing element 62 senses the front end of the document and delays the time period: the wiring controls the scanning unit 210 to start and control the switching claw 51 to swing to the -first position (as shown by the solid line in FIG. 3), the switching The swinging end portion 7 of the claw 51 is extended to find the material. The Qianqi pure section (1) is unobstructed toward the shunting passage 13 while controlling the driving wheel 41 to rotate in the clockwise direction '文# 3GG scanning (as shown in Fig. 4 imaginary line) This can be followed by the transport: Channel: Import the split channel 13' and use file 3. The front end of the 〇 top opens the door 532 and moves toward the outer port 121. Finally, the second driven wheel 43 and the driving rim are moved out of the second wheel (200819309). As indicated by the imaginary line, at this time, the first surface 31 of the document 300 has been turned downward, and the second surface 32 is turned upward. And when the rear end of the file 3〇〇 has been completely removed from the lower side of the second switching piece 53, the second switching piece 53 which is originally opened will utilize the characteristics of the material itself, so that the second opening end portion 532 recovers. Resisting on the second side portion 142". Next, as shown in FIG. 5, when the third sensing member 63 senses the rear end of the document 3, the driving wheel 41 is controlled to be reversed (ie, reversed). When the rotation of the relay roller group 7〇 is matched, the document 3〇〇 can be transferred from the turning channel 丨2 to the paper path 11 when the front end of the document 300 is re-written to the second sensing. The component 62 senses that after the delay period, the transport roller set 30 can be controlled to transport the document 300 toward the scanning unit 210, and can be connected to control the scanning unit 210 to start and control the switching claw 51 to swing to a first position ( Referring to the imaginary line of FIG. 3, the swinging end portion 512 of the switching claw 51 extends in the introduction port 13i and blocks the path of the scanning section Π3 toward the shunting channel 13, and the scanning is performed. The section 113 is unobstructed toward the paper discharge port 112. And when the document 300 After the second surface 32 is scanned, it can be transferred to the paper discharge port 112, and the first split end portion 521 of the first switch piece 52 is opened by the front end of the document 3 (as shown in the imaginary line in FIG. 3). Finally, a partial removal occurs between the first driven wheel 42 and the driving wheel 41 (as indicated by the phantom line in Fig. 5, at this time, the second surface 320 of the document 300 faces downwards, the first surface 310 faces upward). And when the rear end of the document 300 has been completely removed from the lower side of the first switching piece 52, the first switching piece 52 that is originally opened will utilize the characteristics of its own material, so that the first split end portion 522 is returned to resist. On the abutting portion 114. 13 200819309 As shown in FIG. 6, when the fourth sensing member 64 senses the rear end of the document (10), 'the driving wheel 41 is controlled to rotate clockwise, and the front end of the document 3〇〇 receives the first- The guiding of the switching piece 52 can be guided by the first port 141 to the turning channel 14 : and after the second switching piece 53 is opened, the direction is shifted toward the outer port i2 i and finally outputted by the outer end σ 121 ^ to the top surface 31 of the upper paper discharge tray 16 at which the first surface 31 of the document 3 is facing downward, and The two surfaces 32G are upwards and can be discharged sequentially from bottom to top, and can maintain the order after scanning in conformity with the original. Therefore, the paper feeding device of the present invention can not only perform double-sided scanning, but also the sequence of scanned documents 300 and The original has the following advantages: the switching of the switching claws 51 between the first and second positions, and the use of the first and second switching pieces 52, 53 can be unidirectionally swayed to achieve scanning. After the text #鸠 sequence and the original, and only need to set a switching claw 51, the overall structure is simple, easy to assemble, can reduce the overall manufacturing cost. Second, as shown in Figure 5, Figure 6, the file 300 through the second After the scanning of the surface 32〇, until the rear end of the document 3〇〇 is sensed by the fourth sensing member 64, the driving wheel 41 will rotate clockwise, and the document 300 is guided by the second switching piece 53 to be introduced. In the revolving channel 14, the extension length of the reversing channel 12 and the first channel η does not need to be greater than the length of the file 3 (9). The front and back ends of the document 300 do not have any overlap, which can not only be successfully completed. paper, And the overall length and volume do not need to increase. However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent change of the scope of the invention and the description of the invention is as follows. Modifications are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the combination of a conventional automatic paper feeding device; FIG. 2 is a combined schematic view showing a preferred embodiment of the double-sided paper feeding device capable of returning the original order of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 4 is a schematic view showing the operation of a switching claw according to a preferred embodiment of the present invention, illustrating the switching claw swinging to a second position; FIG. 5 is a comparison of the present invention. A schematic diagram of paper feeding in a preferred embodiment; and Figure 6 is a schematic view of the paper ejection operation of the above preferred embodiment of the present invention. 15 200819309 [Description of main component symbols]
10·•…· …機殼單元 30·•… •…搬運滾輪組 11…… …運紙通道 40 ·…· •…排紙滾輪組 111 .… …進紙端口 4卜·… •…主動輪 112 ·… …排紙端口 42 ..." …·第一從動輪 113 …· …掃描區段 43 ··_·· …·第二從動輪 114 …· …抵止部 50 "… β…切換單元 1 〇 ...... <1 ..... I Z 〕丄 121… …外側端口 511… •…樞接端部 122 ·… …内側端口 512… •…擺動端部 13…… …分流通道 52 ····· •…第一切換片 131 ·… …引入端口 53 ••… …·第二切換片 132 ···· …引出端口 60 ····· •…感應單元 14…… …迴轉通道 61 ··… …·第一感應件 141 ···· …第一端口 62····· •…第二感應件 141，… …内側面 63 "… •…第二感應件 141”··· …外側面 64 …·· …·第四感應件 142 ···. …第二端口 70····· …·中繼滾輪組 142,… …第一側部 7卜…· •…掣動輪 142，，… …第二側部 72 ··… •…輔助輪 15…… …下出紙托盤 200… •…影像形成裝置 16·."· …上出紙托盤 210… •…掃描單元 17…… …進紙托盤 300… •…文件 20…… …進紙滾輪組 310… •…第一表面 16 200819309 32010·•...· ...Cabinet unit 30·•... •...Transport roller set 11............Paper path 40 ·...· •...Drawer roller set 111 ..........Feed port 4 Bu...·...Drive wheel 112 · ... ... paper discharge port 42 ... " ... · first driven wheel 113 ... ... ... scanning section 43 · · · · · · · second driven wheel 114 ... ... ... abutment 50 "... β ...switching unit 1 〇... <1 ..... IZ 〕 丄 121... ...outer port 511... •... pivoting end 122 ·...inside port 512... •...swing end 13... ... shunting channel 52 ······...first switching piece 131 ·...introduction port 53 ••...·second switching piece 132 ···· ...leading port 60 ······... sensing unit 14... ...revolving channel 61 ··...the first sensing element 141 ····...the first port 62·····...the second sensing element 141,...the inner side 63 "... Two sensing members 141"····...outer side 64 ...····fourth sensing member 142 ····...second port 70·······relay roller group 142, ... One side portion 7.........•...掣 wheel 142,,...the second side portion 72··...•...the auxiliary wheel 15...the lower paper output tray 200...•...image forming device 16·." Upper paper output tray 210... • Scanning unit 17 ... ... paper feeding tray 300 ... • File 20 ... ... paper feed roller set 310 ... • ... first surface 16 200819309 320