1313322 九、發明說明： I：發明所屬之技術領域;j 技術領域 本發明係有關一種旋轉式炎持缸（rotary clamp 5 cylinder)。 JL Λ* ^tr ]3 背景技術 旋轉式夾持缸係從内部收納有活塞之缸本體的一端部 突出有連結於活塞之活塞桿。此外，旋轉式夾持缸係使多 10數設於缸本體的引導構件與多數設於活塞桿的旋轉用引導 槽卡合，以藉由移動活塞旋轉活塞桿並朝軸線方向移動， 而使設於活塞桿之夾持器（clamper)夹持工作件。以往，已 知之前述引導構件包括以日本特許第3621〇82號公報(特許 文獻1)之卡合球(鋼球）’或日本國特開2002_87909號公報(特 15 許文獻2)之前端朝向活塞桿軸線方向的銷等。 I：發明内容I 發明揭示 由於則述旋轉式夾持缸係加快活塞的移動速度來加快 夾持(clamp)、鬆開(unciamp)工作件之動作速度或將長夾 20持器安裝於活塞桿，因此施加於活塞桿之慣性矩會增加。 當施加於活基桿之慣性矩如前所述般增加時，引導構件與 旋轉用引導槽則會受到過大的負載或衝擊。此外，若如特 許文獻1所述般地，使受到支撐而可自由旋動之卡合球嵌入 圓弧狀旋轉用引導槽的話，則當卡合球不旋動時，與旋轉 .13133221313322 IX. Description of the invention: I: Technical field to which the invention pertains; j Technical field The present invention relates to a rotary clamp 5 cylinder. JL Λ* ^tr ]3 BACKGROUND ART A rotary clamp cylinder has a piston rod that is coupled to a piston from an end portion of a cylinder body in which a piston is housed. Further, the rotary gripping cylinder is configured such that a plurality of guide members provided in the cylinder main body are engaged with a plurality of rotation guide grooves provided in the piston rod to move the piston rod and move in the axial direction by moving the piston. The workpiece is clamped to the clamp of the piston rod. Conventionally, the above-mentioned guide member includes a front end toward the piston, which is a spheroidal ball (steel ball) of Japanese Patent No. 3621〇82 (patent document 1) or Japanese Patent Laid-Open Publication No. 2002_87909 (Special Document No. 2). A pin or the like in the direction of the rod axis. I: DISCLOSURE OF THE INVENTION I disclosed that the rotary clamp cylinder speeds up the movement speed of the piston to speed up the clamping, unciamp operation speed of the workpiece or to mount the long clamp 20 to the piston rod. Therefore, the moment of inertia applied to the piston rod increases. When the moment of inertia applied to the living base is increased as described above, the guiding member and the guiding groove for rotation are subjected to an excessive load or impact. Further, as described in the first document, when the engaging ball that is supported and rotatably inserted is fitted into the arcuate rotation guide groove, when the engagement ball is not rotated, the rotation is performed. 1313322
Si槽二會產生很增擦力。又，若如特許文獻2所 的前端部Γ與旋轉用引導槽卡合的話，則突出於槽之鎖 在先^枯缝過A的負載或衝擊，鎖會提早損壞。因此， 在先别技術t，難以 5也難以將較异…又持氣、開工作件之動作速度’ 將較長的夾持it安裝於活塞桿上。 於提^錄本發明之課題在於解決前述問題點，其目的在 可輕易料、鬆開工作件之動作速度，且 士易將^的崎轉裝抑塞桿上_料夾持缸。 1〇的_ ώ J之㈣式夾壯係從内部收財活塞之紅本體 、-端部突出有連結於活塞之活畴，並且多 體的引導構件與多數設於活塞桿的旋轉用引導槽卡合，使 活塞桿可藉由移動活塞旋轉並朝軸線方向移動，且使設於 活塞桿之夫持器夹持工作件者，其特徵在於：前述引導構 15件係由銷構件所構成，且於缸本體形成有多數可使孔軸線 不與活塞杯轴線交又的安裝孔且前述多數安袭孔中分別 嵌入有可自由旋動之銷構件， 又’本發明係在前述旋轉式夾持叙令，多數安裝孔之 至少2個安裝孔的孔軸線係設置成其中一孔軸線朝活塞桿 側通過活塞桿軸線的右側，而另—孔轴線通過左侧，且各 自後入安裝孔之銷構件與旋轉用引導槽的卡合量在以活塞 桿軸線為中心之旋動方向上，於與該等銷構件相逆側處較 大。 又，本發明係在前述旋轉式夹壯中，缸本體上設有 兩組以一對為—組之安裝孔，且該安襄孔相對於缸中心線 20 1313322 對稱地設置，而且前述一對安裝孔之孔軸線係設置成其中 ' 孔抽線朝活塞桿側通過活塞桿轴線的右側，而另· 一孔車由 線通過左侧。 又’本發明係在前述旋轉式夹持缸中，嵌入安裝孔之 5 銷構件的活塞桿側端部係設置成使與活塞桿之軸線側之相 反側位於安裝孔之内側開口部附近，且活塞桿之轴線側從 安裝孔之内側開口部朝活塞側突出，又，在銷構件中與活The Si slot 2 produces a very strong rubbing force. Further, if the front end portion of the patent document 2 is engaged with the rotation guide groove, the lock that protrudes from the groove will be damaged or damaged before the lock is applied. Therefore, in the prior art t, it is difficult to make it difficult to change the speed of the workpiece, and the longer clamping it is mounted on the piston rod. The object of the present invention is to solve the above problems, and the object thereof is to easily and loosen the moving speed of the working piece, and to clamp the cylinder on the swinging plug of the singer. The _ 之 之 之 之 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从 从Engagement, the piston rod can be rotated by the moving piston and moved in the axial direction, and the holder provided on the piston rod holds the working member, wherein the guiding mechanism 15 is composed of the pin member. And the cylinder body is formed with a plurality of mounting holes that can make the axis of the hole not intersect with the axis of the piston cup, and the plurality of the anchor holes are respectively embedded with the pin members that are freely rotatable, and the invention is attached to the rotary clamp According to the instruction, the hole axes of at least two mounting holes of the plurality of mounting holes are arranged such that one hole axis passes the right side of the piston rod axis toward the piston rod side, and the other hole axis passes through the left side, and each of the rear mounting holes The engagement amount of the pin member and the rotation guide groove is larger at the opposite side to the pin members in the rotation direction about the piston rod axis. Further, the present invention is characterized in that in the above-described rotary type, the cylinder body is provided with two sets of mounting holes in a pair, and the ampoule is symmetrically disposed with respect to the cylinder center line 20 1313322, and the aforementioned pair The hole axis of the mounting hole is set such that the 'hole draw line passes the right side of the piston rod axis toward the piston rod side, and the other one passes the line through the left side. Further, in the above-described rotary clamp cylinder, the piston rod side end portion of the 5 pin member fitted into the mounting hole is disposed such that the opposite side to the axial side of the piston rod is located near the inner opening portion of the mounting hole, and The axial side of the piston rod protrudes from the inner opening portion of the mounting hole toward the piston side, and in the pin member
塞桿之軸線側之相反側的外周面大略橫跨其全長地由安事 孔之内面加以支撐。 10 15 在本發明中’由於旋轉式夾持缸之引導構件係由銷構 件所構成，且於缸本體形成有多數可使孔軸線不與活塞桿 軸線交叉的安裝孔，且前述多數安裝孔中分別嵌入有可自 由旋動之銷構件，因此銷構件與旋轉用引導槽之卡八量在 銷構件中，活塞桿之轴線側較活塞桿之軸線侧之側 大，並且與活塞桿之軸線側之相反側的外周面大略橫跨其 全長地由安裝孔之内面加以支撐，故，可利射肖構二擔 過大的負載或衝擊，並且易於加快祕、鬆卩紅作件之動 作速度，且可輕易將長夾持器安裝於活塞桿上。 又’在本發财’由於紐安裝狀至少、的 孔軸線係設置成其卜錄線_塞桿㈣過 的右側，而另—孔軸線通過左側， ^干軸線 構件與旋轉用引導槽的卡合量在以活塞 動方向上’於與該等銷構件相逆側處較大，因 少1個銷構件確實地抵撞對於活塞桿之兩旋轉方二 20 1313322 負載或衝擊。 又，在本發明中，由於缸本體上設有兩組以一對為— 組之女裝孔’且該安裝孔相對於缸中心線對稱地設置，而 且前述一對安裴孔之孔軸線係設置成其中一孔軸線朝活塞 5桿側通過活塞桿軸線的右側，而另一孔轴線通過左倒，因 此可藉由兩組以一對為一組之銷構件穩定地抵擋對於活塞 桿之兩旋轉方向的過大負載或衝擊。 又，在本發明中，由於嵌入安裝孔之銷構件的活塞桿 側端部係設置成使與活塞桿之軸線側之相反側位於安裴孔 10之内側開口部附近，且活塞桿之軸線側從安裝孔之内側開 口部朝活塞側突出，又，在銷構件中與活塞桿之軸線側之 相反側的外周面大略橫跨其全長地由安裝孔之内面加以支 撐，因此即使有過大的負载或衝擊作用於銷構件上，仍可 防止銷構件損壞。 15圖式簡單說明 • 第1圖係本發明實施型態中，呈夾持狀態之旋轉式夾持 缸的縱向截面圖。 第2圖係呈鬆開狀態之旋轉式夾持缸的縱向截面圖。 第3圖係第1圖之平面圖。 20 第4圖係第1圖之直線IV-IV的截面圖。 第5圖係活塞桿之外周面展開圖。The outer peripheral surface on the opposite side of the axial side of the plug stem is supported substantially by the inner surface of the borehole across its entire length. 10 15 In the present invention, 'the guiding member of the rotary clamping cylinder is constituted by the pin member, and a plurality of mounting holes are formed in the cylinder body such that the hole axis does not intersect the axis of the piston rod, and the plurality of mounting holes are The pin members that are freely rotatable are respectively embedded, so that the pin members of the pin member and the rotation guide groove are in the pin member, the axis side of the piston rod is larger than the side of the axis side of the piston rod, and the axis of the piston rod The outer peripheral surface on the opposite side of the side is supported by the inner surface of the mounting hole substantially across its entire length, so that the load can be excessively loaded or impacted, and the speed of movement of the secret and loose red parts can be easily accelerated. The long gripper can be easily mounted on the piston rod. In addition, the 'in the fortune' is due to the fact that at least the hole axis is set to the right side of the trajectory _ plug (four), and the other hole axis passes the left side, the card of the dry axis member and the rotating guide groove The combined amount is larger in the direction of the piston in the opposite side to the pin members, since one pin member does not exactly hit the load or impact on the two rotating sides of the piston rod 20 1313332. Further, in the present invention, since the cylinder body is provided with two pairs of a pair of women's holes, and the mounting holes are symmetrically arranged with respect to the center line of the cylinder, and the hole axes of the pair of ampoule holes are set to One of the hole axes passes through the right side of the piston rod axis toward the piston 5 rod side, and the other hole axis passes through the left side. Therefore, the two sets of pin members can stably resist the rotation of the piston rod by a pair of pin members. Excessive load or impact in the direction. Further, in the present invention, the piston rod side end portion of the pin member fitted into the mounting hole is disposed such that the side opposite to the axial side of the piston rod is located near the inner opening portion of the ampoule 10, and the axial side of the piston rod The inner peripheral surface of the pin member protrudes toward the piston side, and the outer peripheral surface of the pin member opposite to the axial side of the piston rod is supported by the inner surface of the mounting hole substantially across the entire length thereof, so that even if there is an excessive load Or impact on the pin member can still prevent damage to the pin member. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing a rotary clamp cylinder in a clamped state in the embodiment of the present invention. Fig. 2 is a longitudinal sectional view of the rotary grip cylinder in a loose state. Figure 3 is a plan view of Figure 1. 20 Fig. 4 is a cross-sectional view taken along line IV-IV of Fig. 1. Fig. 5 is a development view of the outer peripheral surface of the piston rod.
第6A圖至第6C圖係顯示銷構件之另—配置型態的圖。 第7A圖及第7B圖係顯示銷構件之又—配置型態的圖。 【貧施方式；J .1313322 實施發明之最佳型態 如弟！圖所示，旋轉式夹持缸！之 前蓋5覆蓋具有缸孔3 本體2係以後盍4與 ^ 缸目3兩端部，且於内部形成有缸 ::至6内嵌入有可朝轴方向移動之環狀活塞7,而將虹 至^成後麻室8與前側缸室9。形成於罐之内紋螺 知㈣固定有活轉11之下端部。又，活塞桿U之上端部 係從前蓋5突出於軸線前方，且於前述上端部之錐面iu以 螺帽13固定有夹持器12。如第5圖所示，活塞桿Η之外周面 56A to 6C are views showing another configuration type of the pin member. Fig. 7A and Fig. 7B are diagrams showing the configuration of the pin member. [Poverty mode; J.1313322 The best form of implementation of the invention. As shown in the figure, the rotary clamping cylinder! The front cover 5 is covered with the cylinder bore 3, the body 2 is after the 盍4 and the end of the cylinder 3, and the cylinder is formed inside: the inner piston 6 is embedded with an annular piston 7 movable in the axial direction, and the rainbow is inserted To the rear chamber 8 and the front cylinder chamber 9. The inner snail formed in the can is known (4) and the lower end of the movable turn 11 is fixed. Further, the upper end portion of the piston rod U protrudes from the front cover 5 in front of the axis, and the holder 12 is fixed to the tapered surface iu of the upper end portion by a nut 13. As shown in Figure 5, the outer circumference of the piston rod 5 5
設有多數(4個)旋轉用料⑽。旋轉用引導槽_由形成 1〇於軸線方向之凸輪槽15與形成於圓周方向之傾斜凸輪槽16 所構成，並可連接凸輪槽15之引導面15a與凸輪槽16之引導 面16a。又，如第4圖、第5圖所示，相鄰之凸輪槽15、16的 另一側面15b、16b間形成有壁τ，但在本實施型態中沒有側 面15b、16b亦可，因此亦可利用加工除去壁τ。卡合於各旋 15轉用引導槽14之引導構件19係設於紅本體2之前蓋5上。 前述前蓋5之外形係大略形成較紅管3之外形更朝管半 徑方向之外側擴展的矩形，且於其下面5a突出有可嵌入前 述缸孔3a之嵌入軸部17。嵌入軸部17上設有多數(4個）可使 孔軸線HL不與活塞桿11之軸線CL交又的安裝孔18，且前述 20 安裝孔18中分別嵌入有構成引導構件且可自由旋動之銷構 件19。在第4圖中，前蓋5之嵌入軸部17上設有兩組以一對 為一組之安裝孔18 ’且前述安裝孔18相對於缸之中心線（活 塞桿11之軸線CL)對稱地設置，且前述一對安裝孔18之孔軸 線HL係設置成其中一孔軸線朝活塞桿11側通過活塞桿Η軸 1313322 線CL的右側’而另一孔轴線通過左側。 接著，嵌入安裝孔18中之銷構件19的活塞桿側u端部 20係設置成使與活塞桿11之軸線CL側2〇 &之相反側2〇b位於 安裝孔18之内側開口部附近，且活塞桿u之軸線(：^側2〇a 5從安裝孔18之内側開口部朝活塞桿11側突出，又，在銷構 件19中與活塞桿11之轴線cl側之相反側的外周面21大略橫 跨其全長地由安裝孔18之内面加以支撐。又，多數安裝孔 18之至少2個安裝孔的孔軸線HL係設置成其中一孔軸線朝 活塞桿11側通過活塞桿11軸線CL的右侧，而另一孔轴線通 1〇過左側，且各自嵌入安裝孔18之銷構件19與旋轉用引導槽 14的卡合量L在以活塞桿U軸線CL為中心之旋動方向上， 於與s玄專銷構件19相逆側處較大。 又，銷構件19之配置亦可如第6八圖至第6C圖所示。第 6A圖係將一對安裝孔18之孔軸線HL·，即，一對銷構件19之 15轴線設置成大略30度，而第6B圖係將一對安装孔18之孔轴 線HL，即，-對鎖構件19之軸線設置成大略9〇度而且第 6C圖係將一對安裝孔18之孔軸線HL，即，一對銷構件19之 轴線β又置成大略平行。又，在本實施型態巾係配置4個銷構 件19’但亦可如第7Α圖及第7Β圖所示，配置2個以上的鎖 20構件19。前蓋5之一側面上設有一對供、排口22，而其中一 仏排22a係透過如蓋之流體通路23與設於缸管3之縱向 的連通路彳工24相連通。又，另—供、排口]祕透過前蓋5 之另外流體通路25與前側缸室9相連通。 接著針對如述旋轉式爽持缸】的動作力口以說明。當夾 1313322 =器12呈現第2圖所示之位於鬆開位置b的狀態時，若從另 (、排口 22b透過流體通路25供給受壓流體至前側缸室9 的舌絲7會朝㈣下方移動，岐活塞桿“沿著與銷構 件二卡合之旋轉用引導槽14朝軸線下方移動且旋轉9〇度， 5接著，保持於前述旋轉位置並朝向工作件W下降，且於夹 持位置Α夾持卫作件W。又，當夾持器12呈現第旧所示之 位於失持位置A的狀態時，若從其中一供、排口咖透過流 體通路23、連通路徑24供給受壓流體至後側缸室8的話，活 塞7會朝軸線上方移動’而使活塞桿u進行與前述相反的動 1〇作13此爽持器12會呈現位於鬆開位置B之狀態。 在㈣式爽持缸1中，當施加於活塞桿u之慣性矩因加 快活塞7的移動速度來加快夾持(damp)、鬆開㈣㈣)工 作件w之動作速度’或將長夾持器12安裝於活塞桿^而增 加時銷構件I9與旋轉用引導槽^會受到過大的負载或衝 15擊二而丨於本實施型態中，前蓋5上設有多數可使孔轴 線不與活塞桿11之軸線CL交叉的安裂孔18，且前述安裝孔 18中分別般人有可自由旋動之銷構件19，g)此鎖構件19與 旋轉用弓丨導槽U之卡合量L在銷構件19中，活塞糾之轴線 CL側較活塞;^11之軸線^側之相反側大，|與活塞桿^之 2〇轴線側CL之相反側的外周面21大略橫跨其全長地由安裝孔 18之内面加以支撐’故，可利關構件聰播過大的負載 或衝擊，並且易於加快夾持、鬆開工作件之動作速度，且 可輕易將長夾持器12安裝於活塞桿η上。又，即使在與旋 轉用引導槽14卡合之銷構件19不旋動的情況下，也不會如 11 1313322 以往般地於邊緣和旋轉用料_觸碰之銷構件b與旋轉 用引導槽14之間產生很大的摩擦力。 纟於Θ述多數*裝孔18之至少2個安裝孔18的孔轴肌 線係设置成其中-孔軸線朝活塞桿ii側通過活塞桿i丄轴線 5 CL的右側，而另一孔軸線通過左側，且各自嵌入安裝孔18 之銷構件19與旋轉用引導槽14的卡合量匕在以活塞桿丨^由 線CL為中心之旋動方向上，於與該等銷構件19相逆側處較 大，因此可藉由至少1個銷構件19確實地抵擋對於活塞桿^ 之兩旋轉方向上過大的負載或衝擊。又，由於前蓋5上設有 10兩組以一對為一組之安裝孔18，且該安裝孔18相對於缸之 中心線（活塞桿11之軸線CL)對稱地設置，而且前述一對安 裝孔18之孔軸線CL係設置成其中一孔轴線朝活塞桿u側通 過活塞桿11軸線CL的右側，而另一孔軸線通過左側，因此 可藉由兩組以一對為一組之銷構件丨9穩定地抵擋對於活塞 15桿11之兩旋轉方向上過大的負載或衝擊。再者，由於嵌入 _ 安裝孔18之銷構件19的活塞桿11側端部20係設置成使與活 塞桿11之軸線CL側20a之相反側20b位於安裝孔18之内侧開 口部附近’且活塞桿11之軸線CL側20a從安裝孔18之内側開 口部朝活塞11側突出，因此銷構件19中與活塞桿11之軸線 20 CL側之相反側的外周面21大略橫跨其全長地由安裝孔丨8之 内面加以支撐，故，即使有過大的負載或衝擊作用於銷構 件19上，仍可防止銷構件19損壞。 雖然以上已針對本發明最佳之例作某種程度特別的說 明’但亦可針對前述說明作種種改變。因此’在此應可明 12 1313322 白的是本發明亦可在不脫離本發明之範圍及精神的情況 下，以與本說明書中特別記載之形態不同的形態實施。 【圖式簡單說明】 第1圖係本發明實施型態中，呈夾持狀態之旋轉式夾持 5 缸的縱向截面圖。 第2圖係呈鬆開狀態之旋轉式夾持缸的縱向截面圖。 第3圖係第1圖之平面圖。 第4圖係第1圖之直線IV-IV的截面圖。 | p 第5圖係活塞桿之外周面展開圖。 10 第6A圖至第6C圖係顯示銷構件之另一配置型態的圖。 第7A圖及第7B圖係顯示銷構件之又一配置型態的圖。There are a majority (4) of rotating materials (10). The rotation guide groove _ is constituted by a cam groove 15 formed in the axial direction and an inclined cam groove 16 formed in the circumferential direction, and can connect the guide surface 15a of the cam groove 15 and the guide surface 16a of the cam groove 16. Further, as shown in Figs. 4 and 5, the wall τ is formed between the other side faces 15b and 16b of the adjacent cam grooves 15, 16 but in the present embodiment, the side faces 15b and 16b are not included. The wall τ can also be removed by processing. The guide member 19 that is engaged with each of the rotation guide grooves 14 is attached to the front cover 5 of the red body 2. The outer shape of the front cover 5 is roughly formed into a rectangular shape which is wider than the outer surface of the red tube 3 and extends toward the outer side in the semicircular direction of the tube, and an insertion shaft portion 17 into which the cylinder bore 3a can be inserted protrudes from the lower surface 5a. The insertion shaft portion 17 is provided with a plurality of (four) mounting holes 18 which can make the hole axis HL not overlap with the axis CL of the piston rod 11, and the 20 mounting holes 18 are respectively embedded with the guiding members and are freely rotatable. Pin member 19. In Fig. 4, the insert shaft portion 17 of the front cover 5 is provided with two sets of mounting holes 18' in a pair and the mounting holes 18 are symmetrical with respect to the center line of the cylinder (the axis CL of the piston rod 11). The hole axis HL of the pair of mounting holes 18 is disposed such that one hole axis passes the right side of the piston rod 11 shaft 1313322 line CL toward the piston rod 11 side and the other hole axis passes the left side. Next, the piston rod side u end portion 20 of the pin member 19 fitted into the mounting hole 18 is disposed such that the opposite side 2〇b of the axis CL side of the piston rod 11 is located near the inner opening portion of the mounting hole 18. And the axis of the piston rod u (the side 2 〇 a 5 protrudes from the inner opening portion of the mounting hole 18 toward the piston rod 11 side, and on the opposite side of the pin member 19 from the axis c1 side of the piston rod 11 The outer peripheral surface 21 is substantially supported by the inner surface of the mounting hole 18 across its entire length. Further, the hole axis HL of at least two mounting holes of the plurality of mounting holes 18 is disposed such that one of the hole axes passes the piston rod 11 toward the piston rod 11 side. The right side of the axis CL passes, and the other hole axis passes through the left side, and the engagement amount L of the pin member 19 and the rotation guide groove 14 which are respectively fitted into the mounting hole 18 is rotated around the U-axis CL of the piston rod. In the moving direction, it is larger on the opposite side of the side of the s-Xuan special pin member 19. Further, the pin member 19 can be arranged as shown in Figs. 6 to 6C. Fig. 6A shows a pair of mounting holes 18 The axis HL of the hole, that is, the 15 axes of the pair of pin members 19 are set to be approximately 30 degrees, and the 6B is a hole axis of the pair of mounting holes 18. HL, i.e., the axis of the lock member 19 is set to be approximately 9 degrees, and the sixth embodiment is such that the axis axis HL of the pair of mounting holes 18, i.e., the axis β of the pair of pin members 19, is again substantially parallel. Further, in the present embodiment, four pin members 19' are disposed, but two or more lock members 20 may be disposed as shown in Figs. 7 and 7A. One pair of front covers 5 are provided on one side. The supply and discharge port 22, wherein one of the rows 22a communicates with the communication passage completion 24 provided in the longitudinal direction of the cylinder tube 3 through the fluid passage 23 such as the cover. Further, the other supply and discharge ports pass through the front cover. The other fluid passage 25 communicates with the front side cylinder chamber 9. Next, the operation force port of the rotary holding cylinder as described above will be described. When the clamp 1313322 = the device 12 is shown in the second position, it is located at the release position b. In the state, if the tongue wire 7 that supplies the pressurized fluid to the front side cylinder chamber 9 through the fluid passage 25 moves downward (4) from the other side, the piston rod "guides along the rotation with the pin member 2 The groove 14 moves downward toward the axis and rotates 9 degrees, 5, then remains in the aforementioned rotational position and descends toward the workpiece W, and is clamped Holding the position Α holding the guard W. Further, when the holder 12 assumes the state of the misplaced position A as shown in the old state, if one of the supply and discharge ports is supplied through the fluid passage 23 and the communication path 24 When the pressurized fluid reaches the rear side cylinder chamber 8, the piston 7 will move upwards toward the axis, and the piston rod u will be reversed as described above. 13 The holder 12 will assume a state of being in the released position B. In the (four) type holding cylinder 1, when the moment of inertia applied to the piston rod u accelerates the movement speed of the piston 7 to speed up the damp, loosen (four) (four)) the working speed of the workpiece w or the long gripper When the piston rod is mounted on the piston rod, the pin member I9 and the rotating guide groove are subjected to an excessive load or a blow to the second embodiment. In the present embodiment, the front cover 5 is provided with a plurality of holes. a piercing hole 18 intersecting the axis CL of the piston rod 11, and each of the mounting holes 18 has a pin member 19 that is freely rotatable, and g) a locking amount of the lock member 19 and the pivoting guide groove U for rotation L is in the pin member 19, the axis of the piston correction axis CL is larger than the piston; the opposite side of the axis side of the ^11 is larger, and the axis of the piston rod is 2 The outer peripheral surface 21 on the opposite side of the side CL is substantially supported by the inner surface of the mounting hole 18 across its entire length. Therefore, it is possible to facilitate the excessive load or impact of the member, and it is easy to accelerate the action of clamping and loosening the workpiece. The speed and the long gripper 12 can be easily mounted on the piston rod η. Further, even when the pin member 19 engaged with the rotation guide groove 14 is not rotated, the pin member b and the rotation guide groove which are conventionally touched by the edge and the rotating material are not used as in the case of 11 1313322. A large amount of friction is generated between 14. The hole axis muscle line of at least two mounting holes 18 of the majority of the mounting holes 18 is disposed such that the - hole axis passes the piston rod i 丄 axis 5 CL toward the right side of the piston rod ii side, and the other hole axis The amount of engagement of the pin member 19 and the rotation guide groove 14 which are respectively inserted into the mounting hole 18 through the left side is in the direction of rotation about the piston rod 由 from the line CL, against the pin members 19 The side is relatively large, so that at least one pin member 19 can reliably resist an excessive load or impact on the two rotational directions of the piston rod. Further, since the front cover 5 is provided with 10 sets of two sets of mounting holes 18 in a pair, and the mounting holes 18 are symmetrically disposed with respect to the center line of the cylinder (the axis CL of the piston rod 11), and the aforementioned pair The hole axis CL of the mounting hole 18 is disposed such that one hole axis passes the right side of the piston rod 11 axis CL toward the piston rod u side, and the other hole axis passes the left side, so that the two groups can be grouped by a pair. The pin member 丨 9 stably resists an excessive load or impact on the two rotational directions of the rod 15 of the piston 15. Further, the piston rod 11 side end portion 20 of the pin member 19 embedded in the mounting hole 18 is disposed such that the opposite side 20b from the axis CL side 20a of the piston rod 11 is located near the inner opening portion of the mounting hole 18' and the piston The axis CL side 20a of the rod 11 protrudes from the inner opening portion of the mounting hole 18 toward the piston 11 side, so that the outer peripheral surface 21 of the pin member 19 opposite to the axis 20 CL side of the piston rod 11 is mounted substantially across its entire length. The inner surface of the bore 8 is supported so that the pin member 19 can be prevented from being damaged even if an excessive load or impact acts on the pin member 19. While the above has been described with respect to the preferred embodiments of the present invention, the invention may be modified in various ways. Therefore, it is to be understood that the invention may be practiced otherwise than as specifically described in the specification without departing from the scope and spirit of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view of a rotary clamp 5 cylinder in a clamped state in the embodiment of the present invention. Fig. 2 is a longitudinal sectional view of the rotary grip cylinder in a loose state. Figure 3 is a plan view of Figure 1. Fig. 4 is a cross-sectional view taken along line IV-IV of Fig. 1. | p Figure 5 is a development of the outer circumference of the piston rod. 10 FIGS. 6A to 6C are views showing another configuration of the pin member. 7A and 7B are views showing still another configuration of the pin member.
13 1313322 主要元件符號說明】 1…旋轉式夾持缸 15^^16a…引導面 2___缸本體 15b, 16b.··側面 3...缸管 17…鼓入車由部 3a...缸孑L 18...安裝孔 4...後蓋 19…銷構件 5...前蓋 20...端部 6...缸室 20a…軸線側 7…活塞 20b…軸線側之相反側 8...後側缸室 21...外周面 9...前側缸室 22,22&221)..·供、排口 10...内螺紋桿部 23,25…流體通路 11··.活塞桿 24···連通路徑 11a…錐面 HL···孔軸線 12...夾持器 CL...軸線 13...螺帽 W".工作件 14…旋轉用引導槽 L...卡合量 15，16.··凸輪槽 T...壁 1413 1313322 Description of main component symbols] 1... Rotary clamping cylinder 15^^16a... Guide surface 2___Cylinder body 15b, 16b.· Side 3... Cylinder tube 17...Blowing into the vehicle part 3a...Cylinder孑L 18...mounting hole 4...rear cover 19...pin member 5...front cover 20...end 6...cylinder chamber 20a...axis side 7...piston 20b...opposite side of the axial side 8...rear side cylinder chamber 21...outer peripheral surface 9...front side cylinder chamber 22,22&221).. supply and discharge port 10...internal threaded rod portion 23,25...fluid passage 11· Piston rod 24···communication path 11a...cone surface HL··hole axis 12...clamp CL...axis 13...nut W" work piece 14...rotation guide groove L ...the amount of engagement 15,16.··Cam groove T...wall 14