1294490 九、發明說明： 【發明所屬之技術領域】 、本發明是有關於一種以氣壓等流體壓力使活塞往復 運動的流體壓氣缸，特別是有關於適用於具有鎖固裝置的 流體壓氣缸的有效技術。 、 【先前技術】 在a車車身裝配線上，设有通過點焊等步驟對衝壓成 型的板材進行連接的多道工程。這些工程中，有形成車身 =底：工程，形成車身側部的側部工程，將 加⑽等安裝上主體的金屬裝配線卫程等。在這= 作堂的車身裝配線上’設有多台搬運台車，各 ，=固定在搬運台車上，移動到各操作臺。衫裝配線 的最刖面的操作臺與最後的摔作 、’、、、 接，搬谨A#产“ 1 作之間由返回傳送帶連 接搬運σ車在車身袭配線上猶環 公開之_平4·勘34之第4頁及w 7)了、日本專利早期 臂固ir-m祕r裝錢科車上的板材被夹持 ^ 使該夾持臂擺動的驅動源多用产俨 :將通氣管從搬運台車:拔下，因=多== ，動到操作臺之間，流體台車 的狀態下仍能將板材固定住。n就供給被切斷 為了滿足這個要求，有人開發出了具有能將與夹持臂 7 1294490 連，的活塞捍_的鎖固結構的流體錢紅。這種 以ί板材被固定的狀態下限制活塞桿的移動 在壓縮空氣被切斷的狀態下也能將板材予以固定。 麻^疋’具有顧結構的流赌1^是雜力使鎖固社 構作動的，鎖固結構往往會被與該彈力相對 所_。因此’如要提高固定板材時的夾持力，:3力 過提高彈簧部件的彈力來增強鎖固結構的鎖固力:而= 必須有很強的空氣壓力來鬆開鎖固結構。因此 = 力固口結構的緒力就會導致韻壓氣細大魏，使成= 【發明内容】 本發明的目的是提供-種流體壓力汽紅，可實别 化並降低成本，同時不降低鎖固結構的夾持力。、 本發明的流體屢氣缸的特徵是具有:容納固 桿上的主活塞，並能讓其仙部往復運動的汽虹缸體、ς 在上述汽缸缸_ ’作動時呈纽上述活塞桿 ^ 與解除夾緊的解除狀態的鎖固單元、裝在上述汽 二在使亡述鎖固單元切換至夹持狀態的作動位置與： 換至解除狀您的退避位置之間往復運動，且劃 力室與鎖轉除動室的_活塞、與上卿關力^ 通，通過上述綱活塞，引導給上述鎖固科施加推力ί 流體的流體供給通道，以及裝在上述鎖固屬力室内尚 上述鎖固活塞，給上述_單元施加彈簧推力的彈菩^ 件。通過上述鎖固單元’在上述活塞桿的轴向施加流體的 1294490 推力與彈簧的推力。 菩的職㈣贿是通職體的推力與彈 1力在上_固單元上蓄積應變力。 坪 述鎖固=產妓轉㈣推力除去上 在上述鎖固單元】=變:過流趙的推力娜的推力 本叙明的流體壓氣缸的特徵^ ^ 上，在，:塞按定的== 口，在使上述流體供給通道向上述_壓力室開 在向上述鎖固活塞施加彈筈的推 、、司 活塞施加彈簧的推力與紐的推力。。上述鎖固 、、舌矣^發r的雜壓氣㈣特徵是謂_活塞在上述 二:至=單；過上述鎖固活塞上形成的斜*將 置於上==:，=== 復移動，通過上述的球姐上輕塞桿的==袖向在 本發明的流體壓氣缸的特徵是通 復運動使夾持臂擺動。&通過上述活基桿的往 採用本發明由於可以通過流體的推力 將鎖固單元切換至夹持狀態，因此可以將彈*部件： 設定得較低而不降低顧結構的㈣力。這樣 流體塵氣缸小型化並降低成本。 貝 另外，由於可以通過流體的推力與彈簧的推力在上述 9 1294490 鎖固單元上蓄積應變力， 過應變力與彈簧的推力保持高夹持^讀後也可以通 易懂為na，其他目的、特徵和優點能更明顯 明如τ。，錢例’魏合所_心作詳細說 【實施方式】 下面，據附圖對發明的實施方式進行詳細說明。 車】〇 μ 士〜， ％ 何作為工件W搬到搬運台 H 麵相操作臺Sn，完成了規定触配作章的 夹搬運台車1G上取下。讀運台車心有失緊即 交有2=夹持結構12。在圖1中各搬運台車10分別 蕊2=寺賴12，但是可以根據工件W的大小等在 飯運台車1G上設置任意數量的夾持結構12。 結構5 2=t矛i圖1的t持結構12的前視圖，在該夾持 在搬、軍A /有本發明的貫施方式之—的流體壓氣缸13。 車7上設妓紅件w的枝台14，在該支承 # 衣著此以銷16為中心擺動的，失持工件w的夾持 。流體壓氣缸13靠固定在其上的u形夾(devis)17的 。刀，通過鎖18可擺動地裝在支承台14上，流體壓氣缸 3=舌塞桿19通過銷2G與夾持臂15相連接。活塞桿μ 疋的衝程，向前進方向’即從流體壓氣缸13突出出來 10 1294490 的方向移動時，夾持臂15即將工件W夾緊固定，即夾持。 一圖3是表示圖2的流體壓氣缸13的截面圖。如圖3 2不’流體壓氣缸13具有能讓主活塞21在其内部軸向往 设運動的氣叙筒(cylindertube)22，容納農在其上的鎖固單 的鎖固單元罩殼24,鎖固單元罩殼24具有鎖固單元 =納部25與在其徑向延伸的鎖固活塞容納部26。在氣缸 =2的端部㈣端t27’_單元罩殼24的端部裝著活 ^罢ί 28。氣缸筒22、鎖固單元罩殼24、端蓋27盥活 基才干軍盍28形成氣缸缸體29。 一 氣缸筒22内被容納於氣缸筒22内的主活 成夾持壓力室30與夾持解除壓力室31，在端芸; 有與夾持壓力室3G連通的給排氣口 32，在活 ^成 上形成有與夾持解除壓力室31相 二干罩疏28 過給排氣⑼向麵力錢通 主活塞21向活塞桿罩蓋28前進時_卩堅縮空乳的 持解除壓力室31供給壓縮空氣的排氣α 33向失 退。 /基21向端蓋27後 主活塞21具有設有密封材料％ 舁具有圓筒部36的第二圓盤37，在第_ : / 一圓i 35 36的内周面上形成有母螺紋3知。在二圓盤37的圓筒部 盤37之間失有環形磁石38,氣缸筒—圓盤<35與第二圓 表示出的感測器可通過磁石38檢測上所設的、圖中未 另外，在其-端形成公螺紋叫=1的位置。 螺紋19a與主活塞21的第二 =杯19通過公 ’螺方疋連接，同時可往 1294490 復移動地支承於活塞桿罩蓋28中。固定於主活夷21 活塞桿i9,由對夾持壓力室30與失持解除壓力^ = 縮空氣給排控制，與錄塞21成_體在軸向移動。 容納在活塞桿罩蓋24内的鎖固單元23 塞桿19外周的多個球_)，即鋼球％，以及保持該多個 鋼球39並職整條塞桿！9的筒独持㈣， 可以相對於活塞桿19往復移動。鎖固單元23在保^ 的外周具有其内周面為錐面41a的鎖固套筒41， 筒41可往復移動地容納於鎖固罩殼24中。這护 桿19的外周面與鎖固套筒4!的錐面4i&之間^ 個鋼球39時’通過使鎖固套筒41軸向移動，鎖固又夕 便可在兩狀態之間切換，即將鋼球39壓向活塞桿 3 活塞桿19與鎖固套筒41夾緊而呈失持狀態，與解除對^ 塞桿19的押壓從而解除夹緊的解除狀§之間進行切拖^舌 在鎖固套筒41與活塞桿罩蓋28之間設有帶邻 的有底圓筒形彈簧支架部件Μ，在彈簧支架部件43 ^ ，部42=活塞桿罩蓋28之間設有解除用彈簧部件4 解除用彈黃料44通過與鎖固套筒4 # 二1294490 IX. Description of the Invention: [Technical Field] The present invention relates to a fluid pressure cylinder that reciprocates a piston by fluid pressure such as air pressure, and particularly relates to a fluid pressure cylinder suitable for use with a locking device. technology. [Prior Art] On the a car body assembly line, a multi-pass project for joining stamped sheets by spot welding or the like is provided. In these projects, there is a bodywork = bottom: engineering, which forms the side part of the side of the body, and the metal assembly line of the main body is added (10). In this body assembly line of the hall, there are a plurality of transport trolleys, each of which is fixed to the transport trolley and moved to each console. The most sleek console of the shirt assembly line and the final fall, ',,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, On page 4 of the survey 34 and w 7), the plate on the early arm of the Japanese patent ir-m secret r loading truck was clamped ^ The drive source for swinging the clamp arm was used for calving: the vent tube was removed from Handling trolley: Unplugged, because = more ==, move to the console, the plate can still be fixed in the state of the fluid trolley. n The supply is cut off In order to meet this requirement, someone has developed a The clamping arm 7 1294490 is connected to the piston 捍 _ the locking structure of the liquid money red. This y plate is fixed to restrict the movement of the piston rod can also fix the plate in the state where the compressed air is cut off. The gambling of the 疋 疋 具有 具有 是 是 是 是 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ : 3 force to increase the spring force of the spring parts to enhance the locking force of the locking structure: and = must have very The air pressure is used to loosen the locking structure. Therefore, the force of the force-solid structure will cause the rhyme to be fine, and the result of the invention is to provide a fluid pressure red, which is practical. And reducing the cost without reducing the clamping force of the locking structure. The fluid-cylinder of the present invention is characterized by: a steam-hydrogen cylinder that accommodates the main piston on the fixed rod and allows the centripet to reciprocate,锁 When the cylinder cylinder _ 'actuates, the piston rod of the above-mentioned piston rod ^ and the release state of the release of the clamp is installed, and the operation position of the steam cylinder is switched to the clamped state by the steam cylinder: Reciprocating motion between the retracted position and the disengagement position, and the _piston and the upper-clearing force of the squeezing chamber and the lock-removing chamber are guided to the above-mentioned lock cylinder to apply the thrust ί fluid a fluid supply passage, and a locking piston mounted in the above-mentioned locking force chamber, and applying a spring thrust to the above-mentioned unit. The 1294490 thrust is applied to the axial direction of the piston rod by the locking unit With spring The thrust of the Bodhisattva (four) bribe is the thrust of the general body and the force of the bomb 1 to accumulate the strain on the upper solid unit. Pingshuo lock = calving and turning (four) thrust removal on the above locking unit] = change: overcurrent The thrust of Zhao’s thrust Na is described in the characteristics of the fluid pressure cylinder ^ ^, at: the plug is pressed according to the fixed == port, the fluid supply passage is opened to the above-mentioned pressure chamber to apply the bomb to the lock piston The thrust of the cymbal, the thrust of the piston applied by the piston and the thrust of the nucleus. The above-mentioned lock, the tongue and the pressure of the hybrid gas (4) is characterized by the _ piston in the above two: to = single; over the above locking piston The formed oblique * will be placed on the upper ==:, === complex movement, through the above-mentioned ball sister on the light plug rod == sleeves in the fluid pressure cylinder of the present invention is characterized by a complex movement to swing the clamping arm . & Passing the above-mentioned living base rod With the present invention, since the lock unit can be switched to the gripping state by the thrust of the fluid, the bullet member can be set lower without lowering the (four) force of the structure. This fluid dust cylinder is miniaturized and reduces costs. In addition, since the strain force can be accumulated on the above-mentioned 9 1294490 lock unit by the thrust of the fluid and the thrust of the spring, the over-strain force and the thrust of the spring are kept high, and the clamp can be easily understood as na, for other purposes, Features and advantages can be more pronounced as τ. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the accompanying drawings.车 〇 , , % % 工件 工件 , , 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件 工件If the heart of the reading platform is not tight, the 2 = clamping structure 12 is handed over. In Fig. 1, each of the transport trolleys 10 has a core 2 = a temple 12, but an arbitrary number of gripping structures 12 can be provided on the meal trolley 1G in accordance with the size of the workpiece W or the like. Structure 5 2 = t spear i The front view of the t holding structure 12 of Fig. 1 is held in the fluid pressure cylinder 13 of the moving, military A / having the embodiment of the present invention. The carriage 7 is provided with a branch 14 of the blush member w, and the support # is oscillated about the pin 16 and the holding of the workpiece w is lost. The fluid pressure cylinder 13 is resting on a devisor 17 secured thereto. The knife is swingably mounted on the support table 14 by means of a lock 18, and the fluid pressure cylinder 3 = the tongue plug rod 19 is connected to the clamp arm 15 via the pin 2G. When the stroke of the piston rod μ , moves in the forward direction ′, that is, from the direction in which the fluid pressure cylinder 13 protrudes 10 1294490, the clamp arm 15 clamps and fixes the workpiece W, that is, clamps. FIG. 3 is a cross-sectional view showing the fluid pressure cylinder 13 of FIG. 2. As shown in Fig. 3, the fluid cylinder 13 has a cylinder tube 22 which allows the main piston 21 to move axially in its interior, and a lock unit cover 24 for accommodating the lock unit on the lock. The solid unit housing 24 has a locking unit = a middle portion 25 and a locking piston receiving portion 26 extending in a radial direction thereof. At the end (4) end t27' of the cylinder = 2, the end of the unit casing 24 is loaded with a spring. The cylinder barrel 22, the lock unit housing 24, and the end cover 27 are formed into a cylinder block 29. The main living clamping pressure chamber 30 and the clamping release pressure chamber 31 housed in the cylinder barrel 22 in the cylinder barrel 22 are at the end; the air supply and exhaust port 32 communicating with the clamping pressure chamber 3G is in operation ^The above is formed with the clamping release pressure chamber 31, the second dry cover is separated from the exhaust gas (9), and the surface of the main piston 21 is advanced toward the piston rod cover 28 _ 卩 tightening the empty milk holding pressure chamber 31 The exhaust gas α 33 supplied to the compressed air is lost. /Base 21 to the end cover 27, the main piston 21 has a second disc 37 having a sealing material % 舁 having a cylindrical portion 36, and a female thread 3 is formed on the inner circumferential surface of the _: / a circle i 35 36 . The annular magnet 38 is lost between the cylindrical discs 37 of the two discs 37, and the sensor shown by the cylinder-disc <35 and the second circle can be detected by the magnet 38. In addition, a position where the male thread is called =1 is formed at its end. The thread 19a is coupled to the second = cup 19 of the primary piston 21 by a male nut and can be supported in the piston rod cover 28 in a movable manner to 1294490. It is fixed to the main piston 21 piston rod i9, and is controlled by the pair of clamping pressure chamber 30 and the de-energizing release pressure ^=reduced air supply and discharge, and the recording body 21 is moved in the axial direction. The locking unit 23 housed in the piston rod cover 24 has a plurality of balls _) on the outer circumference of the plug rod 19, that is, a steel ball %, and holds the plurality of steel balls 39 together for the entire stopper rod! The cylinder of the cylinder 9 (four) can reciprocate relative to the piston rod 19. The lock unit 23 has a lock sleeve 41 whose inner peripheral surface is a tapered surface 41a on the outer circumference of the seal, and the cylinder 41 is reciprocally received in the lock cover 24. When the outer peripheral surface of the guard rod 19 and the tapered surface 4i of the locking sleeve 4! are separated from the steel ball 39, by locking the locking sleeve 41 axially, the locking can be performed between the two states. Switching, that is, pressing the steel ball 39 against the piston rod 3, the piston rod 19 is clamped to the lock sleeve 41 to be in a state of being held off, and is cut between releasing the pressing force of the stopper rod 19 and releasing the clamping. The dragging tongue is provided with an adjacent bottomed cylindrical spring bracket member 在 between the locking sleeve 41 and the piston rod cover 28, and is disposed between the spring bracket member 43^, the portion 42=the piston rod cover 28 The release spring member 4 is released by the elastic yellow material 44 and the locking sleeve 4 #二
使得鎖聽Μ _除料。也_解 件44使得_套筒41靠向端蓋27—側的後退m 支架部件43的底部45與保持㈣之間設有保 P 件46，該保持用彈簀部件 靠^部 -側的後退方向。 于保持°° 40昇向端蓋27 在鎖固罩殼24内設有與保持器4〇相鄰的定位套筒 12 1294490 =定位錢47職整絲塞桿i9，— 位套筒47是用以為將由保持用彈箬部= 的tr 40以及鋼球39的後退移動限制在一定位置 苗26==塞容納部26是由氣紅26a與封閉氣叙的前罩 ΐ 48 成的。在氣缸^内容納著鎖固活塞48，鎖固活 將鎖固活塞容納部26内劃分為容納鎖 8 鎖_室50,以及給鎖固活塞48施加與^鎖固== =9的推力即彈力相對向的流體推力的鎖固解除壓= ，鎖固活塞48為帶凸緣部48a的有底圓筒形，且有 ^ κ谷、、，内孔48b與氣紅孔48c。在彈簧容納孔他上 =的彈簧支架部件52，彈簧支架部件52與前罩蓋^ 將鎖_彈黃料49雜在顧動t % . 他上裝有可往復移動的具有活塞部说與活= 的柱塞53，在活塞部53a的端面與氣紅孔恢的底=之 夾有柱塞用彈簧部件54。該柱塞用彈簧部件Μ 得z柱塞53向靠近前罩蓋26b的方向向上移動，該向上 動因活塞部53a與彈簧支架部件52 #接而收到限制。也就 是說，彈簧支架部件52是用以為將柱塞53 限 制在-定位置的擔塊。 另外，在形成鎖固活塞容納部26的前罩罢26b的大 致中央部位’形成有彡丨導龍，即壓齡氣進I鎖固壓力 13 1294490 f 50 =體供給通道55 ’且該流體供給通道Μ連通的给 礼口 56形成於氣缸施。流體供給通道％ *柱塞 的’柱塞53通過向上移動與前罩蓋2你接觸 斷狀態，鎖固活塞48的向下移動2 成隔 ΟΛΚ π卜私動使仵柱基53脫離前罩蓋 罩莫道55與鎖固壓力室5G成連通狀態。在前 罩孤26^上形成的流體供給通道55的開口部上裝有闕座 Γ★柱基53的剛端與龜57的接觸可⑽證隔斷狀態的 氣透' 〇 ♦向鎖ϋ解除壓力室51供給壓縮空氣後，個活塞48 脫離鎖固套筒41朝退避位置而向上移動。在向上移動的過 釭中’在柱基53的活塞部53a接觸到彈簧支架部件52之 前，柱塞53處於比鎖固活塞48更突出的狀態，因此柱塞 53首先與前罩蓋26b賴座57接觸後，鎖固活塞48才與 前罩蓋26b接觸。鎖固活塞48向上移動直至與前罩蓋施 接觸前-直在壓縮柱塞用彈簧部件Μ，在活塞㉝仏與彈 貫支架部件52之間形成一定的間隙c 1。 在鎖固活塞48向上移動時，鎖固壓力室5〇内的空氣 從閥座57經流體供給通道55排出，在向上的途中柱塞g 與閥座57接觸後，流體供給通道55便被閉塞。因此，設 於柱塞53的活塞部53a的U形襯墊53d是向著允許向下 的空氣流的方向安裝的，鎖固壓力室5〇内的空氣，即使在 柱塞53與閥座57接觸後也能從u形襯墊53d與氣缸孔4以 之間向下排出，通過柱塞53上形成的通孔53c從流體供給 14 1294490 孔55排出。 、身另方面’鎖固解除壓力室51的壓縮空氣被排出後， 鎖口活塞48因鎖固用彈黃部件49的彈力向著與鎖固套筒 41接觸的作動位置向下移動。在_活塞的向下移動 中、柱^ 53因彈力而靠向上升方向，因此鎖固活塞 8百先脫離鮮蓋26b，織柱塞53的活塞部53a盘彈箬 支架部件52接觸，柱塞53脫離前罩蓋施。也就是說了 即使鎖固活塞48開始向下移動，在向下移動至-定的衝程 T分(相當於間隙C1的部分)前，柱塞53保持 的閥座57接觸的狀態。 山在這樣與柱塞53-起作往復移動的鎖固活塞伯 鳊’形成有帶傾斜面，即錐面60a的錐形活塞桿部6〇，錐 ，60a的錐角α約為3〇2的銳角。與 、隹 :鎖，41的端蓋27—側的端面上也形:::面 41b’錐面41b的錐角卢約為15〇_〇的鈍角。 面 塞48朝鎖固套筒41向下移動時，通過相接觸 ^面=’ 6Ga ’ _套筒41被壓向前進方向，鎖: 用Γ·Λ持狀g ’㈣翻活塞48向场動時，解ί ΖΓΛ44 _力將_套筒41壓向後退方向，t 早兀23成為解除狀態。 頌固 处柱基53的通孔5：3a，不僅用於讓鎖固壓力室 二^出，而且用於手動操作鎖固活塞41時的情況。^的 ^12施的流體供給通道55上裝有作為流體供4成 ，、外。卩的阻隔塞用的螺絲部件61，在顧活塞4° = 1294490 固活夷，I%延伸出來的螺紋孔48d。在手動操作鎖 公螺“、=絲部件拆下的狀態下，將前端部形成 、首55 ,心^未表示出的桿部件從外部插人流體供給通 ^ 、、里柱基53的通孔53c與螺紋孔48d螺合。這樣， 部操作鎖固活塞48,通過手動方法切 換磽口早70 23的解除狀態與夾持狀態。 ，下來，對給夾雜力室3()，夾持解除壓力室^， 室5〇以及鎖固解除壓力室51供給壓縮空氣的供 兄明、。圖4是表示沿圖3的Α·Α線的活塞桿罩 、、、、口構的截面圖。如圖4所示，在活塞桿罩芸μ上 成有3個給排氣口 33，根據使用情況，有：：個給排 才雨、首七給排乳用的配管相連接。該配管通過帶排氣口的 空氣壓力源相連接，通過通道切換閥的切換 給排^33供給雜线，另—方面又從給排氣口 :堅縮空氣排出。沒有使用的給排氣口 33由塞堵塞。 活塞桿罩蓋28内部裝有引導筒體幻，^導筒‘ 外周面上，形成有與3個給排氣σ 33連通的通道溝64， 2連通該通道溝64與引導筒體63内周面上形成的通道 j 65的連通孔66。在引導㈣63上裝著插人連通孔恥 ，為節流裳置的針閥67,通過螺入外周面形成有公螺蚊 a的針閥67可以改變連通孔66的流體通道截面面積， 可以控制通過連通孔66的壓縮空氣流的流量。 、 通過這樣的連通孔66引導至通道溝65的壓縮空氣供 給夹持解除壓力室31與鎖固解除壓力室51。彈簧支架^ 1294490 件43，保持器4〇 w » a , + 19的外徑大-此筒47軸㈣定得比活塞桿 二’掉黃支架部件43，保 套筒47與活塞桿19之間形成連通_^二== ?的通道溝65與失持解除壓力室 口 通過該連通間隙6Mg_ ' 力至Μ 夾持解除题六宕w t M逋過給排氣口 33對 排進行^ 與鎖固解除壓力室51的壓縮空氣的給 圖5是表TF從圖3的箭頭B方向 的側視圖。如圖5所示，在端蓋27上也形成有 室30連通的多個給排 ^^有與鎖固麼力 排氣σ 根據使崎況，有一個給 排虱口 32與給排氧用的配管相連 -樣，通過帶排氣，通道切制與芯官 通過通道切換目 排氣D 32將壓缩空氣排二:此; 以通過給排乳口 32野夾持廢力室 行控制。沒咖的給職口 32輪^=的給排進 又如谓3與圖5所+，★山拿^ 接頭70通過配管71餘排^5267 "^有管接頭70，管 目士 u /、、、°排虱口 56連接。該管接頭70也 排乳〇的通道切換閥與空氣壓力源相連接，通過 通道切換_切縣作給管制提供壓齡氣，另一方 7()#_η#έ^樣，便可從管接頭 =過給觀口 56 __力室50進龍駭氣的給排 接下來對流體壓氣幻3的動作進行說明。圖6(A)、 129449〇 二大(I)®同圖7⑷、圖7⑻是表示流體壓氣幻3 —部分的 首去早：解除狀態至鎖固狀態的變動過程。 f先，對鎖固單元讓主活荚担 ，於端蓋27 一側後蝴位置的狀態:二‘主= 入^缸^9内的狀態向前移動的動作進行朗杯進 氣二t :後退到底位置的狀態時，形成從給排 縮室31與顧解除勤室51供給屢 力室^ 過連通間㈣供給失持解除厂堅 4〇 ^ 39 室51㈣1 力至51。進入該鎖固解除麗力 上，對^固舌用彈菁部件49間隙壓縮的方向 鎖固輪套4i向上移動“鎖解嶋室51便脫離 力宮A /負口，舌基48受到供給鎖固解除壓 用彈簧部二生定按能足以產生可抵抗鎖固. 錯於鎖固活塞48向上移動時，避免了鎖固活塞48與 固、=^=，因此解除用彈菁部件44的彈力使得鎖 向，位置後退移動。後退移動結束後，鎖固套 同？端面獅桿罩蓋28的端面之間，如 =成為，成-定的間隙C2的狀態。這樣，一旦鎖固套 =向解除位置移動，由於鎖固套筒41的錐面化與鋼 球39之間設有一定的間隙。’因此元 不押壓活塞桿19的解除狀態。 & 1294490 過於排广種^下，夾持解除勤室3!内的_空氣通 to 射，啊又通過給減⑼給夹龍力 箭頭aT 氣，主活塞21與活塞桿19向圖6⑷的 氣隨著主這時’夾持解除勤室31内的空 是^ H從給排氣口 ％排出的流量進行限制。也就 被塞f、1的移動夾持解除壓力室31内的空氣 的背壓。由於針閥67是調節式二= 〇亥月壓能很容易地予以設定。 吓人 加到壓力至31產生的背壓通過連通間隙68施 彈.部=隹厂室51 ’因此鎖固活塞48受到對鎖固用 縮的向上的推力，鎖固活塞48保持在 背厚n鎖固活基48受到失持解除壓力室31所產生的 抗按在受到背壓的情況下能足以產生可抵 柷鎖固用弹黃部件49產生的彈力來設定。 一也就ί說」通過給排氣口 32向夾持壓力室孙供給壓 ^工轧L使活基桿19向前進方向移動時，鎖固單元保持著 解除狀態，因此活塞桿19可向前移動。 /'、 奸;對㈣向夾雜力室1供給壓駭氣，讓活 ^干19 4前頭a的方向向前移動的情況進行的說明中是 $夾持壓力室30内的壓縮空氣排出，同時向夾持解除壓 =至31供給壓縮空氣’使得活塞桿19向箭頭切示的方 向向後移動時，因為是通過給排氣口 33向鎖固解除壓力室 19 1294490 51供給壓縮空氣的，所以顧單元23也呈解除狀離。 排气可在讓活塞桿19㊆前、後移動時，靠從給 彳，、給的空氣或主活塞21的移動產生的背壓使鎖 固單元23處於解除狀態，允許活塞桿19前後^【使鎖 、隹〜f下來對切換至夾持狀態的的鎖固單元23的動作 〜=况明。在活塞桿19與主活塞21停止時，也就活 向前移動被_時，或對續解除壓力室3°1的 ’義單元23即切換至夾持狀態。 體供仏通道〜1朝鎖固堡力室5〇開口的流 動二;而"’當在_活塞48朝退避位置向上移 塞53具有通攸給排氣口 56供給。這時’由於柱 通道55來㈣不/在向下的方向受職體供給 力室斷 而二給力因室此:内的空氣沒有 31内的背壓慢慢下降。 ^ 夾持解除壓力室 鎖固用彈菁部件49的彈“二活塞48上，與 =降而下降。也就是說，如圖°上的推力，隨著背壓 向上的推力下降到一宏66i^口士⑼所不，使鎖固活塞48 簧部件4 9的彈力而靠向向下方鎖，活塞4 8因鎖固用彈 向夹持位置—邊向下移動。° ’―邊將鎖固套筒41壓 1294490 這時，由於柱塞S3因有柱塞用彈簧部件54而靠向向 =向’所以即使翻活塞48 _向下移動，柱塞幻與 二坐^仍絲接觸狀態。也就是說，流體供給通道^與 壓力室50繼續保持隔斷狀態，所以鎖固活塞佔^ ==向下方向。另外’鎖固活塞48向下移動會使鎖固 内產生負壓，鎖固用彈菁部件49的彈力 =該負壓讓鎖固活塞48繼續進行向下移動的大小來設 一，固㈣簧部件49的彈力使_活塞48向下移 =的衝程(例如一2mm)時，鎖固套筒41隨著鎖固活塞钝 二If動而向前進方向,動一定的衝程(例如〇.8·)。 雜:41戶^ ’、鎖^套筒41 —向前移動，鎖111套筒41的 錐1a與鋼球39之間的間隙C3 u ::周:Ϊ=41的錐面⑽同= ==鎖固單元23產生心== 使传鎖固早π 23開錢行祕動作。 ^ 如圖6(B)所示，鎖固活塞 程時，柱塞53的活塞部53a與彈箬向支下J；動f到一定的衝 的進行〇消失，活塞部53a ^ =件52之間形成 態。 ，、弹只支架部件52成接觸狀 柱塞53被鎖固活V::;引鎖==繼續向下移動， 始一起向下移動。該向下移_餘=== 1294490 流體供給通道55與鎖固壓力 氣從給排氣口 56供給鎖固 =為連通狀態，壓縮空 不需要外部切換閥。這樣，圖7(A)所二是自動的， 固用彈簧部件49的彈力 二狀•’成為除鎖 固壓力室％的壓縮空氣的推供給到鎖 如圖7(B)所示，受到鎖 笪立 縮空氣的推力的鎖固活#彈力與塵 48使得鎖固套筒41進一步墨向前乂向下私動時，鎖固活塞 =舆活塞桿罩蓋28之間的間隙縮‘套 也就疋况，鎖固套筒41麼 疋的間陳C4, =套筒:r_咬合 兀23 -切換到夹持狀態，主活塞 固早 前移動就被限制在停止位置。另㈣的向 夹持狀態，活塞桿19，鋼球39鍵^ 23 一切換到 著彈性形變狀態，因此活塞桿19，鎖固單同41互相保f 積著一 ^的應變力的狀態。 、’、70都處於蓄 41:P= = 23已切換到夹持狀態’由於鎖固套筒 間設有一定的間紅4，所以鎖固套 鎖固前移動。這樣，傳遞到夾持活塞桿D的 的^ 鎖固用彈簧部件49㈣力與鎖固壓力室50 上力可_通過_套筒4在前進方向施加到活塞桿19 由於鎖固用彈簧部件49的彈力與鎖固壓力室％的推 疋通過形成銳角的錐面6Qa與形成純角的錐面仙傳遞 22 1294490 到鎖固套筒41上的门 鎖固壓力室5〇 ‘二^ 用彈菁部件49的彈力與 41移動到夾持位置後遞到活塞桿19。鎖固套筒 的後退方向，所以右广/舌基杯部60插入鎖固套筒41 前，可以切每㈣在向鎖固解除堡力室51供給氣 ΓΐΊ持鎖固單元23的夹持狀態。 而向二件43隨著鎖固套筒4〗_ 件4二St，右? ％的保持器4〇與彈菁支架部 可以保持與定位套 ===，部件46，保持器4〇 不合蒋叙V, 罪接的狀恶，因此鋼球39的位置 屋力室30供剩空氣【===停止對夾持 ^Η,,23^；；ίΓ^"ίΧΤ'^ 將供使活塞桿Μ向後移動時也一樣，可以通過 Γ室ϋΛ壓力室31雜妨氣翻，使_解除壓 力至51内的壓力下降’將鎖固單元23切換至夾持狀態。 正如迄今為止已作的說明那樣，在活塞桿19向前移 通過停止=失持壓力室3G供給壓縮空氣使主活 :止’或在活塞才旱19向後移動時，通過將夾持解除 1室31内的壓縮空氣排出’讓鎖固單元23切換成夹持 狀態。 下面，對具有流體壓氣缸13的夾持結構12的作動， 以及車身裝配線上搬運台車10的移動進行說明。另外也同 23 1294490 時對夾持工件w時施加_ 明。圖8是表示夾持工件|日^ 、推力-並進行說 變化的曲線圖，縱輛表示推力的;:匕4Γ/上的推力 間。又化秩軸表示經過的時 圖8的符號a表示對夾持壓力 開始，符號b表示活塞桿停 、塾縮空氣供給 放流體供給通道55，_ 付/ G表吨塞53開始開 e表示對夹持_= = = =符號 内=二=束。符號①表示因爽二ί 而传到的推力，符號②表示因鎖固壓 表用彈簧部件49而得到的推力，符號③ 杜40鎖早 的爽持產生的應變力與鎖_彈菩部 件49而得到的推力大小。 … 首先，如圖2所示，裝在搬運台車1〇的夾持結構12 上的流體壓氣缸13可通過使流體壓氣缸13的活塞桿19 向前移動而使夾持臂15向工件W擺動，夾持放置於支承 台14的工件w，另一方面可通過使活塞桿19向後移動而 解除對工件W的夾持。 搬運台車10上為向流體壓氣缸13供給壓縮空氣所設 的給排氣接口 72上連接著分別給與排氣口 32、33、56連 接的3根給排氣管73-75，對夾持壓力室30，夾持解除壓 力室31，鎖固壓力室5〇與鎖固解除壓力室51供給壓縮空 氣，以及將壓縮空氣從這些壓力室30、31、50、51排出都 通過給排氣接口進行。 1294490 ☆車在最前_操作臺S1上設有能與搬運 ° 、、〇就接口 72連接的給排氣接口 76,該认排衰 =?= 氣接口 72、76在搬運台車Η)處於最前面 的操作$: S1時相互連接，ra α ®此壓縮空氣可從空氣墨力源 =5〇、51，麗力室 3〇、31、5〇、51 内的空亂可排出到外部。 £搬運台車10移動到最前面的 除丛·力至31另一方面，杰垃厭a —。 的空氣通過給排氣口 32m〇與鎖固壓力室50 制，隨著鎖固活塞48的上升，錯·通過這樣的給排氣控 置，固單元23被切換至解除狀態，=主移舌= 二Γ塞桿19退入氣缸_9内的向後 接下，通過圖中未表示出的搬運裝置將工件W 到搬運台車1G的支承台14上，供 Μ 的壓縮_過給_口 72、76 ^力至1 另-方面通過給排氣口 32向失持壓力室3 氣’同時通過給排氣π 56向流體供給通道； 氣。通過這樣的給排氣控制，活塞桿 前 時因主活塞21向前移動失持解除壓力室31:4 南，鎖固早70 23保持著解除狀態。如圖8所示，因為二始 1294490 m持壓力室30供給壓縮空氣(符號a)，施加至活塞桿 桿19向=至與壓縮空氣相應的推力（符號①□)，活塞 持臂向前移動至-定的衝程後，下方封閉的夾 活夷产19 工件W靠接，開始夾持工件W，同時使 ^的^而轉止(符號b)。主活塞21隨活塞桿 下降，鎖固活了夷4=此央持，墨力* 51内的背壓慢慢 移動。、鎖固用彈簧部件49的彈力開始向下 夾持壓力23尚未切換至夹持狀態，因此 押屋動作使得裝在夾持臂續押屢活塞桿19。該 夾持臂15本身殘留的、 的銷16、2〇產生的間隙， 位產生的間隙等夫持結與工件W的接觸部 由於鎖固套筒41|^所生的間隨除去。 錐面-，因此活塞向活塞桿19的前進方向擴大的 人錐面41a，能切實^ 動作不會使鋼· 39被咬 兀12所產生的間隙。/基# 19向前移動，消除鎖固單 由彈力推動向下移動 向耵進方向押壓 、如活塞48將鎖固套筒4 與活，19之間與鎖固套筒41之間，鋼球39 ，固早π 23的間隙被消d /肖除。讀，爽持結構12， 悉作好了準備。 示’為鎖固單元23切換至央持狀 接下來，當鎖固活夷 8向下移動超過了-定的衝程 1294490 後，流體供給通道55被柱塞53開放(符號c)。供給至鎖固 壓力室50的壓縮空氣產生的推力與鎖固用彈簧部件49的 彈力使得鎖固活塞48向下移動，鎖固單元23慢慢切換至 失持狀態。鎖固單元23切換至夾持狀態後(符號d)，活塞 才干19被施加上述的推力（符號①），並被施加通過鎖固單元 23傳遞的鎖固壓力室50内的壓縮空氣與鎖固用彈簧部件 49的推力（符號②）。 總之，由於流體供給通道55是在夾持結構12，鎖固 單元23的間隙被消除的狀態下開放並進一步押壓鎖固活 塞48的，因此在牢固地夹持工件w的同時，可以在夾持 結構12，鎖固單元23上蓄積應變力。另外，由於夾持結 構12，鎖固單元23處於間隙被消除的狀態，所以可不浪 費鎖固活塞48餘下的衝程而將其可轉換成應變力。 , 這樣，在最前面的操作臺S1上，通過活塞桿19的向 蝻移動將工件W夾持在支承台14上，完成點焊等作業後， 搬運台車10隨即向操作臺S2移動。這時，相互連接的給 排氣接口 72、76的連接被解除，夾持壓力室3〇與鎖固壓 力室50的壓縮空氣供給被切斷(符號e)。 ^ 隨著壓力室30、50的排氣，施加至活塞桿19的推力 唛忮下降，但是即使在壓力室30、50排氣結束的情況下(符 就、f) ’也可由夾持結構12，鎖固單元23蓄積的應變力以 及，過鎖固單元23傳遞的鎖固用彈簧部件49的彈力，讓 活基桿19 呆持一定的推力（符號③）。 特別是在夹持薄板形的工件W時，由於工件W不在 2 7 ^4490 凡23上蓄積的應變力，與鎖 文、件2 保持高夾持力，牢牢地夾持工件w。以件49的彈力-起 這樣，即使在夾持壓力室3〇蛊 空氣被排出，沒有了㈣室3G、5G的推口^力^5G的屢縮 單元μ也不會被切換至解除狀態」鎖固 ==:。在移動中受到振動或衝擊也罐工件: Γ而保持在作動位置，因 向移動、’不會將鎖固單元23切換至解除狀態。 搬運台車1〇向錢操作臺飾，對讀W進行加 工’在取後的操作臺n完成了加工作業後，工件w被搬出 車身裝配線。如® 1所示，在最後的操作臺％上設有與 上述的給排氣接口 76同樣的給排氣接口 77，當搬運台車 10處於最後的操作臺Sn時，給排氣接口 72、77相互連接， 因此可=對壓力室3〇、3卜5G、51的給排氣進行控制。 在最後的操作臺Sn，壓縮空氣由給排氣口 33供給夾 持解除壓力室31與鎖固解除壓力室51，另一方面，夾持 壓力室30與鎖固壓力室5〇的空氣通過給排氣口 32、％ 排出，因此者鎖固解除壓力室51内壓力的上升，鎖固單 元23被切換至解除狀態，活塞桿19隨著夾持解除壓力室 31内的壓力上升而向後移動。活塞桿19的向後移動使得 28 1294490 夹持臂15向上方張開，搬運 加工好的工件w被搬運事置^被切換至搬出狀態， 的搬運台車10移動至最前 j。然後，工件W搬出後 圖9是表示本發明的另。、 80所設的失持結構81的前視。1 2焉施方式的流體壓氣缸 的部件相同的部件採用同一，味在圖9中，與圖2所示 圖2所示的祕結構12^\’、、^明省略。 關閉夾持臂15的，而圖9所^#冷塞桿19的向前移動來 D的向後移動來關閉夾持臂/15的失持結構81是靠活塞桿 81所設的流體壓氣缸80進行十、日的。下面對這種夾持結構 單元罩殼24設於氣缸缸體= ^°，體壓氣缸80的鎖固 缸缸體29的前部。在主活塞2彳裢部’氣缸筒22設於氣 連接的活塞桿19，在主活塞21的一端裝著與夾持臂15 單元23上的活塞桿82。該流轉厭'〃另一端裝著夾持在鎖固 力室30產生讓活塞桿19、⑼=8〇一中形成的夾持壓 動的推力，而爽持解除壓力室31 : 1蓋28 —侧向後移 活塞桿罩蓋83 -侧向前移動的推力生讓活塞桿19、82向 該流體壓氣缸80與圖3的 在活塞桿19、82向前向後移動日，，通=3二樣，了以 給的壓縮空氣將_單元23切換至= 後移動的主活塞21產生的背壓 陌^、了以通過向 29 1 ° ^ ^ ? 2 『力室3。供給壓縮空氣等使鎖固單元:換至 1294490 如迄今為止所作的說明那樣，本發明的流體壓氣缸 13、80,用鎖固壓力室5〇内的流體，即壓縮空氣產生的推 力，以及鎖固用彈簧部件49的推力將鎖固單元23切換至 失持狀態，因此可以將彈簧部件49的彈力設定得較低而 降低鎖固單元23的夾持力。這樣，便可實現流體壓 、80的小型化並降低成本。 ” 此外，由於鎖固壓力室50内的壓縮空氣產生的推 與鎖固用彈簧部件49的彈力，通過處於失持狀態的鎖固單 =軸„:到活塞桿19上，因此可在爽持結構12及鎖 〜早兀*上畜積應變力。這樣，即使壓力室30、5〇 _ ‘空氣排錢’也能由應變力麟力保持高夾持力二Make the lock listen to _ _ cutout. Also, the disengagement member 44 is provided with a retaining member 46 between the bottom portion 45 and the retaining portion (4) of the retracting m of the bracket member 41 on the side of the end cover 27, and the retaining elastic member is disposed on the side of the bracket Back direction.保持40°L to the end cap 27 is provided with a positioning sleeve 12 adjacent to the retainer 4〇 in the lock housing 24. 1294490= Positioning money 47 position wire plug i9, the position sleeve 47 is used It is thought that the tr 40 of the holding elastic portion = and the backward movement of the steel ball 39 are restricted to a certain position. The seedling 26 == the plug receiving portion 26 is formed by the gas red 26a and the closed front cover 48. The lock cylinder 48 is housed in the cylinder, and the lock piston divides the lock piston housing portion 26 into the lock lock 8 chamber 50, and applies a thrust force to the lock piston 48 to the lock piston 48. Locking release pressure of the fluid force against the elastic force =, the lock piston 48 is a bottomed cylindrical shape with a flanged portion 48a, and has a κ valley, an inner hole 48b and a gas red hole 48c. On the spring receiving hole, the spring bracket member 52, the spring bracket member 52 and the front cover cover the lock_elastic material 49 in the movement t%. He is equipped with a reciprocating piston with a piston portion The plunger 53 has a plunger spring member 54 interposed between the end surface of the piston portion 53a and the bottom of the gas red hole. The plunger spring member is moved upward by the z-cylinder 53 in a direction toward the front cover 26b, and the upward movement is restricted by the piston portion 53a being connected to the spring holder member 52#. That is, the spring bracket member 52 is a weight for restricting the plunger 53 to the -position position. Further, a substantially central portion of the front cover 26b forming the lock piston accommodating portion 26 is formed with a stern guide, that is, a compression gas inlet lock pressure 13 1294490 f 50 = a body supply passage 55' and the fluid supply A gift opening 56 that communicates with the passage is formed in the cylinder. Fluid supply channel % *Plunger's 'Plunger 53' is in contact with you by the upward movement of the front cover 2, and the downward movement of the locking piston 48 is 2 ΟΛΚ π 私 私 仵 脱离 53 53 53 53 53 53 53 53 53 53 53 The cover channel 55 is in communication with the lock pressure chamber 5G. The opening of the fluid supply passage 55 formed on the front cover is provided with a cymbal Γ ★ the proximal end of the column base 53 is in contact with the turtle 57. (10) The gas permeability of the partition state is ' ♦ ♦ The pressure is released from the lock ϋ After the chamber 51 supplies compressed air, the pistons 48 are moved upwards away from the lock sleeve 41 toward the retracted position. In the upward movement, the plunger 53 is in a state of being more protruded than the lock piston 48 before the piston portion 53a of the column base 53 contacts the spring holder member 52, so that the plunger 53 first comes into abutment with the front cover 26b. After the contact of 57, the locking piston 48 comes into contact with the front cover 26b. The lock piston 48 is moved upward until it comes into contact with the front cover, and a certain gap c1 is formed between the piston 33A and the resilient bracket member 52 immediately before the compression plunger spring member. When the lock piston 48 moves upward, the air in the lock pressure chamber 5 is discharged from the valve seat 57 through the fluid supply passage 55, and the fluid supply passage 55 is blocked after the plunger g comes into contact with the valve seat 57 in the upward direction. . Therefore, the U-shaped gasket 53d provided to the piston portion 53a of the plunger 53 is mounted in a direction allowing the downward air flow, and the air in the pressure chamber 5 is locked even if the plunger 53 is in contact with the valve seat 57. Thereafter, it can also be discharged downward from the u-shaped gasket 53d and the cylinder bore 4, and discharged through the through hole 53c formed in the plunger 53 from the fluid supply 14 1294490 hole 55. When the compressed air of the lock release pressure chamber 51 is discharged, the lock piston 48 is moved downward by the elastic force of the lock spring member 49 toward the action position in contact with the lock sleeve 41. In the downward movement of the _ piston, the column 53 is biased in the upward direction due to the elastic force, so that the locking piston 8 is first separated from the fresh cover 26b, and the piston portion 53a of the woven plunger 53 is in contact with the cartridge holder member 52, and the plunger 53 off the front cover. That is, even if the lock piston 48 starts to move downward, the valve seat 57 held by the plunger 53 is in contact before moving downward to a predetermined stroke T (corresponding to the portion of the gap C1). The mountain is formed with a tapered piston rod portion 6 with a sloped surface, that is, a tapered surface 60a, and the cone angle α of the cone 60a is about 3〇2. Sharp angle. The end faces of the end faces 27 of the locks, 41, and 41 are also shaped as follows::: face 41b The taper angle of the face 41b is approximately an obtuse angle of 15 〇 〇. When the plug 48 moves downward toward the locking sleeve 41, it is pressed toward the advancing direction by the contact surface = '6Ga'_sleeve 41, and the lock is moved toward the field by the Γ·Λ holding g '(4) At the time, the solution 压 44 _ force _ sleeve 41 is pressed in the backward direction, and t 兀 23 is released. The through hole 5: 3a of the column base 53 of the tamping is used not only for the lock pressure chamber but also for manually operating the lock piston 41. The fluid supply channel 55 of ^12 is loaded as a fluid for 40%, and outside. The screw member 61 for the damming plug is fixed in the piston 4° = 1294490, and the I% extends the threaded hole 48d. In the state in which the male screw is manually operated and the wire member is removed, the front end portion is formed, the first 55, and the lever member not shown is externally inserted into the fluid supply passage, and the through hole of the inner column base 53 is provided. 53c is screwed into the threaded hole 48d. In this way, the locking piston 48 is operated, and the release state and the clamping state of the opening 70 23 are manually switched. By the way, the clamping force is released to the clamping force chamber 3 (). The chamber, the chamber 5, and the lock release pressure chamber 51 supply the compressed air to the brother, and Fig. 4 is a cross-sectional view showing the piston rod cover, the port structure, and the mouth structure along the line 图·Α of Fig. 3. As shown in Fig. 4, three intake and exhaust ports 33 are formed in the piston rod cover ,μ, and depending on the use, there are: a supply pipe for rain, and a seventh pipe for connection to the milk discharge. The air pressure source of the port is connected, the miscellaneous line is supplied to the row 33 through the switching of the channel switching valve, and the compressed air is discharged from the air supply port: the unused air supply port 33 is blocked by the plug. The inside of the piston rod cover 28 is provided with a guiding cylinder body, and the outer circumferential surface of the guiding cylinder is formed with three air supply and exhaust σ 33 The passage groove 64, 2 communicates with the passage groove 64 and the communication hole 66 of the passage j 65 formed on the inner circumferential surface of the guide cylinder 63. The guide (4) 63 is provided with a connection hole shame, which is a needle for throttling The valve 67 can change the cross-sectional area of the fluid passage of the communication hole 66 by the needle valve 67 which is screwed into the outer peripheral surface to form the male screw a, and can control the flow rate of the compressed air flow through the communication hole 66. Guided by such a communication hole 66 The compressed air to the passage groove 65 is supplied to the clamp release pressure chamber 31 and the lock release pressure chamber 51. The spring holder ^ 1294490 member 43, the outer diameter of the retainer 4〇w » a , + 19 is large - the cylinder 47 shaft (four) It is better to lower the yellow bracket member 43 than the piston rod, and to form a communication groove between the retaining sleeve 47 and the piston rod 19, and the passage of the disengagement pressure chamber opening through the communication gap 6Mg_' force to Μ The detachment problem is 侧视图 逋 逋 逋 给 给 给 给 对 与 与 与 与 与 与 与 与 与 与 与 与 与 与 与 与 与 与 与 与 给 给 给 给 给 给 给 给 给 给 给 给 给 给 给As shown, a plurality of rows and columns of chambers 30 are also formed on the end cover 27 to be connected and locked. According to the situation of the suburbs, there is a connection between the discharge port 32 and the piping for oxygen discharge. By means of the exhaust, the passage cut and the core switch through the passage to switch the exhaust D 32 to discharge the compressed air two: this; In order to control the waste chamber by the faucet 32 field, the 32-round ^= of the serving port is not as shown in Fig. 3 and Fig. 5 +, ★ Shanna ^ joint 70 through the piping 71 Row ^5267 "^ has a pipe joint 70, pipe eye u /,,, ° row port 56 connection. The pipe joint 70 is also connected to the channel switching valve of the milk nipple and the air pressure source, through the channel switch _ cut The county provides pressure control for the control, and the other party 7()#_η#έ^, can be fed from the pipe joint = over the view port 56 __ force chamber 50 into the dragon 骇 gas to the next row of fluid pressure The action of 3 is explained. Fig. 6(A) and 129449〇 The two (I)® and Fig. 7 (4) and Fig. 7 (8) are the first departures of the fluid pressure illusion: the process of changing from the released state to the locked state. f First, the main living pod is placed on the locking unit, and the state of the rear end of the end cover 27 is in the state of the second position: the main movement in the state of the second main unit is the forward movement of the second cup: When the state of the bottom position is reversed, the supply of the force-receiving chamber from the supply and discharge chamber 31 and the evacuation chamber 51 is formed. (4) The supply is released and the factory is shut down. When the lock is released, the locking sleeve 4i of the fixed tongue is compressed by the direction of the gap of the elastic component 49, and the lock chamber 51 is released from the force chamber A/report, and the tongue base 48 is supplied with the lock. The spring-release spring portion can be sufficiently locked to resist the locking. When the locking piston 48 moves upward, the locking piston 48 is prevented from being solidified, and the elastic force of the elastic component 44 is released. When the backward movement is completed, the locking sleeve is in the same state as the end surface of the end lion cover 28, such as =, and the gap C2 is formed. Thus, once the locking sleeve = direction When the positional movement is released, a certain gap is formed between the taper of the lock sleeve 41 and the steel ball 39. 'Therefore, the release state of the piston rod 19 is not pressed. & 1294490 Hold the _ air passage to the inside of the work room 3!, and then give the pinch force arrow aT gas by subtracting (9), and the main piston 21 and the piston rod 19 are directed to the air of Fig. 6 (4). The air in 31 is limited by the flow rate of the exhaust port to the exhaust port. The back pressure of the air in the pressure chamber 31 is released. Since the needle valve 67 is adjusted, the pressure can be easily set. The back pressure generated by the pressure to 31 is applied through the communication gap 68. = 隹 factory chamber 51 'The lock piston 48 is thus subjected to an upward thrust for locking, and the lock piston 48 is held at the back thickness n. The lock base 48 is subjected to the release of the pressure relief chamber 31. In the case of back pressure, it can be set enough to generate the elastic force generated by the lockable elastic yellow member 49. It is also said that the pressure is supplied to the nip valve 32 by the pressure supply port 32. When the base rod 19 is moved in the forward direction, the lock unit is maintained in the released state, so that the piston rod 19 can move forward. /', traitor; (4) The supply of compressed helium gas to the intermixing chamber 1 and the movement of the front end a of the movable 194 are forwarded in the description of the compressed air in the holding pressure chamber 30, and at the same time When the compressed air is supplied to the clamp release pressure = 31 to move the piston rod 19 rearward in the direction indicated by the arrow, since the compressed air is supplied to the lock release pressure chamber 19 1294490 51 through the supply and exhaust port 33, Unit 23 is also disengaged. The exhaust gas can cause the lock unit 23 to be in a released state by the back pressure generated by the movement of the feed air, the supplied air or the main piston 21 when the piston rod 19 is moved forward and backward, allowing the piston rod 19 to be moved forward and backward. The operation of the lock unit 23 that is switched to the clamped state by the lock, 隹~f is down~=condition. When the piston rod 19 and the main piston 21 are stopped, the movement unit is moved forward by _, or the unit 23 of the pressure chamber 3°1 is switched to the clamped state. The body supply passage ～1 is directed to the flow 2 of the opening of the lock chamber, and the "' is supplied to the exhaust port 56 when the y piston 48 is moved upward toward the retracted position. At this time, due to the column passage 55 (4), the service chamber is not broken in the downward direction, and the power supply chamber is broken. The second force is due to the room: the back air in the air 31 does not fall slowly. ^ Clamping release of the pressure chamber locks with the bullets of the elastic component 49 "on the two pistons 48, with = down and down. That is, as shown in the thrust on the °, with the upward pressure of the back pressure drops to a macro 66i ^The sergeant (9) does not, so that the elastic force of the locking piston 48 spring member 49 is locked downward, and the piston 48 is moved downward by the locking force to the clamping position - ° '- the side will be locked The sleeve 41 is pressed at 1294490. At this time, since the plunger S3 is biased toward the direction by the spring member 54 for the plunger, even if the piston 48 is moved downward, the plunger is in contact with the second seat. It is said that the fluid supply passage ^ and the pressure chamber 50 continue to be in a blocking state, so the locking piston accounts for ^ == downward direction. In addition, the downward movement of the locking piston 48 causes a negative pressure in the locking body, and the locking mechanism is used for locking. The elastic force of the member 49 = the negative pressure causes the locking piston 48 to continue to move downwardly, and the elastic force of the solid (four) spring member 49 causes the piston _ piston 48 to move downward = the stroke (for example, a 2 mm), the locking The sleeve 41 moves in a forward direction as the locking piston is blunt, and moves a certain stroke (for example, 〇.8·). Miscellaneous: 41 households ^ ', lock ^ Sleeve 41 - moves forward, the gap between the cone 1a of the sleeve 111 of the lock 111 and the steel ball 39 C3 u :: Week: 锥 = 41 cone (10) is the same = = = the locking unit 23 produces a heart == As shown in Fig. 6(B), when the piston is locked, the piston portion 53a of the plunger 53 and the magazine are supported by the arm J; The progress of the cockroach disappears, and the piston portion 53a^=forms between the members 52. The spring-only bracket member 52 is locked by the plunger 53 to be locked and lived V::; the lock lock == continues to move downward, and starts to move together Move down. The downward shift _ residual === 1294490 The fluid supply passage 55 and the lock pressure gas are supplied from the air supply and exhaust port 56 to the lock state = the communication state, and the compression air does not require the external switch valve. Thus, Fig. 7 (A The second is automatic, the spring force of the spring member 49 is fixed, and the push of the compressed air, which is the lock pressure chamber, is supplied to the lock as shown in Fig. 7(B), and is subjected to the thrust of the air. The locking and locking activity #elastic and dust 48 causes the locking sleeve 41 to further move the ink forward and downward, and the locking piston = the gap between the piston rod cover 28 is reduced. Sleeve 41 Inter-C4, = sleeve: r_bite 兀 23 - switch to the clamping state, the main piston is moved to the stop position before the movement is fixed. The other (four) to the clamping state, the piston rod 19, the steel ball 39 key ^ 23 A switch to the elastic deformation state, so the piston rod 19, the lock single 41 and the other 41 maintain a state of strain force. , ', 70 are stored 41: P = = 23 has been switched to the clamp State 'Because there is a certain amount of red 4 between the locking sleeves, the locking sleeve moves before locking. Thus, the locking spring member 49 (4) and the locking pressure chamber 50 are transmitted to the clamping piston rod D. The upper force can be applied to the piston rod 19 through the sleeve 4 in the advancing direction. The elastic force of the spring member 49 for locking and the pushing force of the lock pressure chamber are passed through the tapered surface 6Qa forming an acute angle and the cone surface forming a pure angle. The door lock cylinder 5, which transmits 22 1294490 to the lock sleeve 41, is moved to the clamp position by the spring force 41 of the elastic member 49 and moved to the clamp position. The reclining direction of the locking sleeve is reversed, so that the right wide/tongue base cup portion 60 is inserted into the locking sleeve 41, and the clamping state of the air holding unit 23 can be cut to the locking force releasing chamber 51 in the locking force release chamber 51. . With the two pieces 43 along with the locking sleeve 4 _ _ 4 4 St, the right % of the retainer 4 〇 and the elastic crest bracket can be kept with the positioning sleeve ===, the component 46, the retainer 4 does not fit Jiang Syria V, the sin of the evil, so the position of the steel ball 39 in the house room 30 for the remaining air [=== stop on the clamping ^,, 23 ^;; Γ Γ ^ " ΧΤ ΧΤ ^ ^ will provide the piston rod The same applies to the backward movement of the crucible, and the lock chamber 23 can be switched to the clamped state by the air pressure fluctuation of the chamber pressure chamber 31 so that the pressure is released to the pressure drop 51. As explained so far, when the piston rod 19 is moved forward by the stop = de-holding pressure chamber 3G to supply compressed air to make the main activity: stop or when the piston is moved backward 19, the clamping is released by 1 chamber. The compressed air discharge in 31 allows the lock unit 23 to be switched to the clamped state. Next, the operation of the clamp structure 12 having the fluid pressure cylinder 13 and the movement of the transport carriage 10 on the vehicle body assembly line will be described. In addition, when the workpiece w is clamped, the same applies to 23 1294490. Fig. 8 is a graph showing the change of the workpiece|day ^ and the thrust - and the change in the vertical direction, and the thrust in the vertical direction; Further, the rank axis indicates the elapsed time. The symbol a of Fig. 8 indicates the start of the gripping pressure, the symbol b indicates that the piston rod is stopped, the contracted air is supplied to the discharge fluid supply passage 55, and the _ pay/g gauge plug 53 starts to open e to indicate Clamp _= = = = within the symbol = two = bundle. The symbol 1 indicates the thrust transmitted by the cool two, the symbol 2 indicates the thrust obtained by the spring member 49 for locking the pressure gauge, and the strain force generated by the symbol 3 and the early lock of the lock 40 and the lock_elastic component 49 And the size of the thrust obtained. First, as shown in Fig. 2, the fluid pressure cylinder 13 mounted on the clamp structure 12 of the transport carriage 1 can swing the clamp arm 15 toward the workpiece W by moving the piston rod 19 of the fluid pressure cylinder 13 forward. The workpiece w placed on the support table 14 is clamped, and on the other hand, the clamping of the workpiece W can be released by moving the piston rod 19 rearward. In the transport carriage 10, three air supply and exhaust pipes 73-75 respectively connected to the exhaust ports 32, 33, 56 are connected to the air supply and exhaust port 72 provided for supplying compressed air to the fluid pressure cylinder 13, and are clamped. The pressure chamber 30, the clamp release pressure chamber 31, the lock pressure chamber 5 and the lock release pressure chamber 51 supply compressed air, and the compressed air is discharged from the pressure chambers 30, 31, 50, 51 through the air supply and exhaust interface get on. 1294490 ☆The car is provided at the front _ console S1 with an air supply and exhaust port 76 that can be connected to the transport port 〇 and 〇 on the interface 72. The deflation is === the air ports 72, 76 are at the front of the transport ram) Operation $: S1 is connected to each other, ra α ® This compressed air can be discharged to the outside from the air ink source = 5 〇, 51, and the air force in the 3, 31, 5, 51 of the Lili room. The transport trolley 10 moves to the front. In addition to the clumps, the force to 31 on the other hand, Jay is tired of a. The air is made through the air supply port 32m and the lock pressure chamber 50. As the lock piston 48 rises, the air supply unit 23 is switched to the release state by the control of the air supply and exhaust. = The second damper rod 19 is retracted into the cylinder _9 and is connected backwards, and the workpiece W is placed on the support table 14 of the transport trolley 1G by a transport device not shown in the figure, and the compression _ over-feed port 72 is provided. 76 ^ force to 1 in another aspect by supplying the exhaust port 32 to the detent pressure chamber 3 gas ' while supplying the exhaust gas π 56 to the fluid supply passage; By such air supply and exhaust control, the piston rod is released from the front of the piston rod by the forward movement of the main piston 21, and the pressure chamber 31:4 is locked. As shown in Fig. 8, since the second chamber 1294490 m holds the pressure chamber 30 to supply compressed air (symbol a), it is applied to the piston rod 19 to the thrust corresponding to the compressed air (symbol 1 □), and the piston holding arm moves forward. After the stroke is set to the fixed stroke, the workpiece W is closed and the workpiece W is abutted, and the workpiece W is started to be gripped, and the ^ is turned (symbol b). The main piston 21 descends with the piston rod, and the lock is activated. 4= This central holding, the back pressure in the ink force* 51 is slowly moved. The spring force of the spring member 49 for locking starts to be pulled downward. The pressure 23 has not yet been switched to the gripping state, so that the hoisting action causes the gripping arm to renew the piston rod 19. The gap generated by the pins 16, 2, which are left by the clamp arm 15 itself, and the gap between the gap and the workpiece W are removed by the lock sleeve 41|^. Since the tapered surface is formed, the human conical surface 41a whose piston is expanded in the advancing direction of the piston rod 19 can reliably prevent the gap generated by the steel 39 from being bitten. /Base #19 moves forward, eliminating the lock single by the elastic force to push the downward movement to the reverse direction, such as the piston 48 between the locking sleeve 4 and the live, 19 between the lock sleeve 41, steel The ball 39, the gap of π 23 is eliminated by d / xiao. Read, cool hold structure 12, ready to prepare. The indication is that the locking unit 23 is switched to the central holding state. Next, when the locking movement 8 is moved downward beyond the predetermined stroke 1294490, the fluid supply passage 55 is opened by the plunger 53 (symbol c). The thrust generated by the compressed air supplied to the lock pressure chamber 50 and the elastic force of the lock spring member 49 cause the lock piston 48 to move downward, and the lock unit 23 is slowly switched to the lost state. After the locking unit 23 is switched to the clamped state (symbol d), the piston 19 is applied with the above-mentioned thrust (symbol 1), and is applied with the compressed air and the lock in the lock pressure chamber 50 transmitted through the lock unit 23. The thrust of the spring member 49 (symbol 2) is used. In short, since the fluid supply passage 55 is opened in the state in which the gap of the lock unit 23 is eliminated and the lock piston 48 is further pressed in the clamp structure 12, the workpiece w can be firmly clamped while being firmly clamped. Holding the structure 12, the straining force is accumulated on the locking unit 23. Further, due to the clamping structure 12, the locking unit 23 is in a state in which the gap is eliminated, so that it can be converted into a straining force without consuming the remaining stroke of the locking piston 48. Thus, on the frontmost console S1, the workpiece W is held by the support table 14 by the yaw movement of the piston rod 19, and after the spot welding or the like is completed, the transport carriage 10 is then moved to the console S2. At this time, the connection of the interconnected air supply and exhaust ports 72, 76 is released, and the supply of compressed air between the clamp pressure chamber 3 and the lock pressure chamber 50 is cut off (symbol e). ^ With the exhaust of the pressure chambers 30, 50, the thrust 唛忮 applied to the piston rod 19 is lowered, but even in the case where the exhaust of the pressure chambers 30, 50 is completed (following, f) ' can be held by the clamp structure 12 The strain force accumulated by the lock unit 23 and the elastic force of the lock spring member 49 transmitted from the lock unit 23 cause the movable base rod 19 to hold a certain thrust (symbol 3). In particular, when the workpiece W of the thin plate shape is held, since the workpiece W does not accumulate the strain force on the 23, the clamping force and the member 2 maintain a high clamping force, and the workpiece w is firmly held. In the case of the elastic force of the member 49, even if the air is discharged in the holding pressure chamber 3, there is no (4) chamber 3G, 5G push port force ^5G of the retracting unit μ will not be switched to the released state" Locking ==:. The workpiece is also subjected to vibration or shock during movement: the crucible remains in the actuated position, and the lock unit 23 is not switched to the released state due to the movement. The transporting trolley 1 is transported to the money operating table, and the reading W is processed. After the processing operation is completed, the workpiece w is carried out of the vehicle body assembly line. As shown in Fig. 1, the same air supply and exhaust port 77 as the above-described air supply and exhaust port 76 is provided on the last console 100. When the transport truck 10 is at the last console Sn, the air supply and exhaust ports 72, 77 are provided. By interconnecting, it is possible to control the supply and exhaust of the pressure chambers 3〇, 3b, 5G, 51. At the last console Sn, the compressed air is supplied from the air supply and exhaust port 33 to the clamp release pressure chamber 31 and the lock release pressure chamber 51, and on the other hand, the air sandwiching the pressure chamber 30 and the lock pressure chamber 5 is passed. When the exhaust ports 32 and % are exhausted, the pressure in the pressure chamber 51 is released from the lock release, and the lock unit 23 is switched to the released state, and the piston rod 19 moves rearward as the pressure in the clamp release pressure chamber 31 rises. The rearward movement of the piston rod 19 causes the gripping arm 15 of 28 1294490 to open upward, and the conveyed workpiece w is transferred to the carry-out state, and the transport carriage 10 is moved to the front j. Then, after the workpiece W is carried out, Fig. 9 shows another embodiment of the present invention. 80, the front view of the lost structure 81 set. The components of the fluid pressure cylinder of the first embodiment are the same, and the taste is shown in Fig. 9, and the secret structure 12^\' shown in Fig. 2 is omitted. The detent structure 81 that closes the gripping arm 15 and moves forwardly of FIG. 9 to the rearward movement of D to close the gripping arm / 15 is a fluid pressure cylinder 80 provided by the piston rod 81. Carry out the tenth and the day. Next, the holding structure unit casing 24 is provided in the cylinder block = ^°, and the front portion of the cylinder cylinder 29 of the cylinder 80 is pressed. In the main piston 2, the cylinder barrel 22 is provided on the gas-connected piston rod 19, and the piston rod 82 on the unit 23 of the clamp arm 15 is attached to one end of the main piston 21. The flow is disgusting, and the other end is loaded with a thrust force that is clamped in the lock force chamber 30 to generate a pinch pressure formed by the piston rod 19, (9)=8〇, and the release pressure chamber 31: 1 cover 28 — Lateral rearward movement of the piston rod cover 83 - laterally moving forward force causes the piston rods 19, 82 to move forward and backward toward the fluid pressure cylinder 80 and the piston rods 19, 82 of Fig. 3, With the given compressed air, the _ unit 23 is switched to the back pressure generated by the rear main piston 21 to pass the force chamber 3 to 29 1 ° ^ ^ 2 2 . Supply of compressed air or the like to lock the unit: change to 1294490 As explained so far, the fluid pressure cylinders 13, 80 of the present invention lock the fluid in the pressure chamber 5, that is, the thrust generated by the compressed air, and the lock The thrust of the fixing spring member 49 switches the lock unit 23 to the lost state, so that the spring force of the spring member 49 can be set low to lower the clamping force of the lock unit 23. In this way, the fluid pressure, 80 can be miniaturized and the cost can be reduced. Further, since the elastic force of the push-and-lock spring member 49 by the compressed air in the lock pressure chamber 50 is passed through the lock-up single shaft = in the lost state to the piston rod 19, it can be held Structure 12 and lock ~ early 兀 * on the livestock strain. In this way, even if the pressure chambers 30, 5 〇 _ ‘air draining money’ can maintain a high clamping force by the strain force
St二f外’雖然柱塞53切斷了對鎖固壓力室50的壓 =工亂供’但是因為可以因應賴活塞41 所以鎖關力室空氣產生的較強壓力= 元23的間隙被除去後，通過鎖固 衝浐ί扣19。這樣，可不浪費鎖固活塞48的 ^持、、、。構12及鎖固單元23上蓄積應變力。 ^，在鎖固活塞48朝向退避位置而向上 i:上裝著的柱塞53將鎖固壓力室5〇與流體供仏 =動至-疋的衝程時，可將鎖固勤仏 備，預先向流觀給通道5固5^^換至夾持狀態作準 〇供給壓鈿空氣，可以提高壓力 1294490 供給控制的自由度。 砧，所以卜可塞53 *可相對於鎖固活塞48往復移動 鎖固單元23 的尺相差或組裝縣㈣響’在 的壓縮錢供給。這樣停f對鎖固壓力室50 的誤動作。 了以避免_衫23解除狀態下 本發明不限於上述實施方式 二=持構成汽車車身的板材的，但是也可以用 ti r西，還可⑽於夾持财卜的用途。 的，流裝置的針闕67是設於引導筒體63上 二;=裝置可以設在其他通道上，只要是連通夾持 Ϊ 丄與鎖固解除壓力室51以及給排氣口 33的通 Γ的通道溝64、65等通道就可以。ΐ 還可以體^-植力的情況下， μ置裝在流體壓氣虹13、8()之;卜中技“裝置’讓節 ^有’在使鎖固單心3作動時，鋼球糾 土才于19,但是不僅可用鋼球， ·-至活 不用球而用別的部件。例如，可以材f。還可以 隙，可通過彈性形變而使内徑縮小的部件，开"附形成鏠 作是：:二：流體壓氣缸13、8〇作動的流體用的是、 〜疋理所當然也可以用其他流體。 二虱， [發明的效果] 1294490 按照本發明，因為是通過流體的推力 鎖固單元切換至夹持狀態的，所以可以將彈== 現 得較低而研低_結構的夾持力。這樣，便上 / 瓜體壓氣缸小型化並降低成本。 貝 固 單元= 二ίΓ通過流體的推力與彈簧的推力在鎖 •積應文力’目此即使在流勤 ^力與彈簧的推力保持高祕力。 Β通過應 ^然本發明已以較佳實施例揭露如上，铁 =明’任何熟習此技藝者，在不脫離:發;:: 範圍當視後附之申請二：所本發明之保護 【困式簡單說明】 ，疋者為準。 車身平=錢運構錢車車身的板材的 圖2是表示圖！的夾持結構的前視圖。 面圖圖3是表示本發明的—種實施方式的流氣叙的截 視圖 面圖圖4是絲沿_从線的活塞桿罩蓋的結構的截 圖5是表示從圖3的箭頭B方向看的流體壓氣紅的側 部二=矛圖鎖6(= 至夾持狀態的越壓氣缸一部分的截面圖 ()表不鎖固單元從解除狀態切換 32 1294490 ® 7(A)是表示鎖固單元從解除 的流_氣缸-部分的截面圖，圖7(B)J換;夹持狀態 於=!:流趙—的截鎖固單元處 圖8疋表不施加到活塞桿！ 料 圖9是表示本發明的另一的推力雯化的曲線圖。 設的夾持結構的前視圖。 ^方式的流體壓氣缸所 【主要元件符號說明】 10:搬運台車 11:車輪 12·夹持結構 13:流體壓氣缸 14:支承台 15:夾持臂 16:銷 17:U形夾 18:銷 19:活塞桿 19a:公螺紋 19b··外周面 20:銷 21:主活塞 22:氣缸筒 23:鎖固單元 24··鎖固單元罩殼 33 1294490 25:鎖固單元容納部 26:鎖固活塞容納部 26a:氣缸 26b:前罩蓋 27:端蓋 28:活塞桿罩蓋 29:氣缸缸體 30:夾持壓力室 31:夾持解除壓力室 32:給排氣口 33:給排氣口 34:密封材料 35:第一圓盤 36:圓筒部 3 6a:母螺紋 37:第二圓盤 3 8:磁石 39:鋼球 祉保持器 41:鎖固套筒 4 la:錐面 41b:錐面 42:凸緣部 43:彈簧支架部件 1294490 44:解除用彈簧部件 45:底部 46:保持用彈簧部件 47:定位套筒 48:鎖固活塞 48a:凸緣部 48b:彈簧容納孔 48c:氣缸孔 48d:螺紋孔 49:鎖固用彈簧部件 50:鎖固壓力室 51:鎖固解除壓力室 52:彈簧支架部件 5 3:柱基 53a:活塞部 53b:活塞桿部 53c:通孔 53d:U形襯墊 54:柱塞用彈簧部件 55:流體供給通道 56:給排氣口 57:閥座 60:錐形活塞桿部 60a:錐面(傾斜部） 1294490 61:螺絲部件 62:塞 63吲導筒體 64，65:通道溝 66:連通孔 67·.針閥 67a:公螺紋 68:連通間隙 69:塞 70:管接頭 71:配管 72:給排氣接口 73-75:給排氣管 76，77:給排氣接口 80:流體壓氣缸 81:夾持結構 82:活塞捍 83:活塞桿罩蓋St 2 f outside 'Although the plunger 53 cuts off the pressure on the lock pressure chamber 50 = work chaos 'but because the piston 41 can be relied on, the strong pressure generated by the lock chamber air is removed = the gap of the element 23 is removed After that, the buckle is punched by 19. In this way, it is possible to not waste the holding, closing, and closing of the piston 48. The strain force is accumulated on the structure 12 and the locking unit 23. ^, when the locking piston 48 is facing the retracted position and upwards i: the upper loaded plunger 53 is used to lock the pressure chamber 5 〇 and the fluid supply 仏 = move to - 疋 stroke, the lock can be prepared, in advance To the flow view, the channel 5 is fixed to the clamping state to supply the compressed air, which can increase the degree of freedom of the supply control of the pressure 1294490. The anvil, so the cork 53 * can reciprocate relative to the locking piston 48. The difference in the size of the locking unit 23 or the assembled county (four) ring is in the compressed money supply. This stops the malfunction of the lock pressure chamber 50. The present invention is not limited to the above embodiment. The second embodiment is not limited to the above-described embodiment. The needle 67 of the flow device is disposed on the guiding cylinder 63; the device can be disposed on other passages as long as it is the communication clamp 丄 and the lock release pressure chamber 51 and the exhaust port 33 Channels 64, 65 and other channels are fine. ΐ It is also possible to use body--planting force, μ is placed in the fluid pressure gas rainbow 13,8 (); Bu Zhong technology "devices let the knot ^ have" when the lock single heart 3 is actuated, the steel ball is corrected The soil is only 19, but not only the steel ball can be used, but also the other parts can be used without the ball. For example, the material f can also be used, and the inner diameter can be reduced by elastic deformation. The trick is:: 2: the fluid pressure cylinders 13, 8 〇 actuated fluid is used, and it is of course possible to use other fluids. Second, [effect of the invention] 1294490 According to the invention, because of the thrust lock through the fluid The solid unit is switched to the clamping state, so the clamping force of the lower structure can be lowered and the lower clamping force can be reduced. Thus, the upper/gut body cylinder is miniaturized and the cost is reduced. Through the thrust of the fluid and the thrust of the spring, the lock and the force of the force are kept. Even if the flow force and the thrust of the spring maintain a high secret force, the present invention has been disclosed in the preferred embodiment as above. = 明' Anyone who is familiar with this skill, does not leave: hair;:: Please note: The protection of the present invention [simplified description of the sleepy type], whichever is the case. Figure 2 is a front view of the clamping structure of the figure! Figure 3 FIG. 4 is a cross-sectional view showing the structure of the piston rod cover of the present invention. FIG. 4 is a view showing the structure of the piston rod cover of the wire-to-slave line. Side 2 = Spear Lock 6 (= Sectional view of the part of the overpressure cylinder to the clamped state () The table does not lock the unit from the release state 32 1294490 ® 7(A) is the flow of the lock unit from the release _ Sectional view of the cylinder-part, Figure 7(B)J; clamping state at ==: flow-cutting of the locking unit Figure 8 is not applied to the piston rod! Figure 9 is a representation of the present invention A diagram of the thrust Wenhua. A front view of the clamping structure. ^Mode of the fluid pressure cylinder [Major component symbol description] 10: Handling trolley 11: Wheel 12 · Clamping structure 13: Fluid pressure cylinder 14: Support table 15: Clamping arm 16: Pin 17: U-clip 18: Pin 19: Piston rod 19a: Male thread 19b··Outer peripheral surface 20: Pin 21: Main piston 22: cylinder barrel 23: lock unit 24··lock unit cover 33 1294490 25: lock unit accommodation portion 26: lock piston accommodation portion 26a: cylinder 26b: front cover 27: end cover 28: piston rod cover Cover 29: Cylinder block 30: Clamping pressure chamber 31: Clamping release pressure chamber 32: Supply and exhaust port 33: Supply and exhaust port 34: Sealing material 35: First disc 36: Cylinder portion 3 6a: Female Thread 37: second disc 3 8: magnet 39: steel ball holder 41: locking sleeve 4 la: tapered surface 41b: tapered surface 42: flange portion 43: spring holder member 1294490 44: release spring member 45: bottom portion 46: retaining spring member 47: positioning sleeve 48: locking piston 48a: flange portion 48b: spring receiving hole 48c: cylinder bore 48d: threaded hole 49: locking spring member 50: locking pressure chamber 51: Locking release pressure chamber 52: Spring holder member 5 3: Column base 53a: Piston portion 53b: Piston rod portion 53c: Through hole 53d: U-shaped gasket 54: Plunger spring member 55: Fluid supply passage 56: Feed port 57: valve seat 60: tapered piston rod portion 60a: tapered surface (inclined portion) 1294490 61: screw member 62: plug 63 吲 guide cylinder 64, 65: passage groove 66: communication hole 67·. needle Valve 67a: male thread 68: connected Gap 69: plug 70: pipe joint 71: pipe 72: air supply and exhaust port 73-75: air supply pipe 76, 77: air supply and exhaust port 80: fluid pressure cylinder 81: clamping structure 82: piston 捍 83: piston Rod cover