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公开(公告)号：US09573232B2
公开(公告)日：2017-02-21
申请号：US14237410
申请日：2012-03-26
申请人： Hideaki Yokota , Keitaro Yonezawa
发明人： Hideaki Yokota , Keitaro Yonezawa
CPC分类号： B23Q3/06 , B25B5/04 , B25B5/06 , B25B5/061 , B25B5/062 , F15B15/1409 , F15B15/1447 , F15B15/204
摘要： A first piston for high load is inserted into a housing so as to be movable vertically, and a second piston for low load is inserted into a cylindrical hole of the first piston so as to be movable vertically. An output portion projects from the second piston to above the housing. A first spring for high load and a second spring for low load are mounted in a spring chamber defined by both pistons and. Both springs and are mounted so as to urge the first piston and the second piston upward. A switching mechanism disposed in the pressure fluid chamber at a side opposite to the spring chamber, connects the first piston selectively to the housing or the second piston.
摘要翻译： 用于高负载的第一活塞被插入到壳体中以便可垂直移动，并且用于低负载的第二活塞被插入到第一活塞的圆柱形孔中以便可垂直移动。 输出部分从第二活塞突出到壳体的上方。 用于高负载的第一弹簧和用于低负载的第二弹簧安装在由两个活塞和两个活塞限定的弹簧室中。 两个弹簧并被安装成向上推动第一活塞和第二活塞。 在与弹簧室相反的一侧设置在压力流体室中的切换机构将第一活塞选择性地连接到壳体或第二活塞。
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公开(公告)号：US09458865B2
公开(公告)日：2016-10-04
申请号：US14128054
申请日：2012-05-16
申请人： Hideaki Yokota , Keitaro Yonezawa
发明人： Hideaki Yokota , Keitaro Yonezawa
CPC分类号： F15B15/16 , B25B5/061 , B25B5/062 , B25B5/064 , B25B5/122 , B25B5/16 , F15B3/00 , F15B15/1409 , F15B15/204 , F15B15/26
摘要： A first piston (10) is inserted in a housing (2) so as to be hermetically movable vertically. A second piston (20) is inserted in a cylindrical hole (14) of the first piston (10) so as to be hermetically movable axially, and has an output rod (26) projecting upward from the housing (2). A lock chamber (40) is formed below the first piston (10) and the second piston (20), and a release chamber (42) is formed above the first piston (10) and the second piston (20). A force multiplier (52) is arranged in the housing (2) so as to cause (i) a first force, with which a pressurized fluid supplied into the lock chamber (40) pushes the first piston (10) upward, to be transformed in a force-multiplying manner into a second force and (ii) the second force to be transmitted to the second piston (20). Further, a change-over mechanism (54) is arranged in the housing (2) so as to selectively couple the first piston (10) to the housing (2) or the second piston (20).
摘要翻译： 第一活塞（10）插入壳体（2）中以便能够垂直地气密地移动。 第二活塞（20）插入到第一活塞（10）的圆柱形孔（14）中以便可轴向移动，并且具有从壳体（2）向上突出的输出杆（26）。 在第一活塞（10）和第二活塞（20）的下方形成锁定室（40），在第一活塞（10）和第二活塞（20）的上方形成有释放室（42）。 在壳体（2）中布置有力乘数（52），以便使（i）第一力，供给到锁定室（40）中的加压流体向上推动第一活塞（10）以转化 （ii）第二力被传递到第二活塞（20）。 此外，转换机构（54）布置在壳体（2）中，以便选择性地将第一活塞（10）联接到壳体（2）或第二活塞（20）。
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公开(公告)号：US20080157451A1
公开(公告)日：2008-07-03
申请号：US12073383
申请日：2008-03-05
申请人： Keitaro Yonezawa , Yosuke Haruna
发明人： Keitaro Yonezawa , Yosuke Haruna
IPC分类号： B23Q3/08
摘要： A plug member (12) inserted into a positioning hole (5) formed in a second block (2) is projected from a first block (1). A plurality of slide portions (61) opposed to each other across the plug member (12) are arranged around the plug member (12) movably in a first radial direction (D1) substantially orthogonal to the opposed direction thereof. A first pressing member (15) and a second pressing member (19) are arranged outside the slide portions (61) diametrically expandably and diametrically contractibly and axially movably. The first pressing member (15) is driven toward a base end by a drive device, whereby the slide portions (61) expand the first pressing member (15) via the second pressing member (19), thereby the slide portions (61) are moved in the first radial direction (D1) with respect to the plug member (12). After the movement, when the second pressing member (19) is blocked from moving toward the base end, the first pressing member (15) strongly presses an inner peripheral surface of the positioning hole (5) in the second radial direction (D2).
摘要翻译： 插入到形成在第二块（2）中的定位孔（5）中的插塞构件（12）从第一块（1）突出。 沿插塞构件12彼此相对的多个滑动部61沿与其相反方向大致正交的第一径向（D 1）可动地设置在插塞构件12的周围。 第一按压构件（15）和第二按压构件（19）布置在直径可膨胀和径向收缩和轴向移动的滑动部分（61）的外侧。 第一按压部件（15）通过驱动装置朝基端方向驱动，滑动部（61）经由第二按压部件（19）使第一按压部件（15）膨胀，滑动部（61） 相对于插塞构件（12）沿第一径向方向（D 1）移动。 在移动之后，当第二按压部件19阻止向基端移动时，第一按压部件15在第二径向（D 2）上强力地按压定位孔（5）的内周面， 。
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公开(公告)号：US20060273504A1
公开(公告)日：2006-12-07
申请号：US10570892
申请日：2004-09-07
申请人： Keitaro Yonezawa , Gaku Yoshimura , Yosuke Haruna
发明人： Keitaro Yonezawa , Gaku Yoshimura , Yosuke Haruna
IPC分类号： B23Q3/00
CPC分类号： B23Q1/009
摘要： A plug portion (27) is projected from a first block (1) so as to be inserted into a insertion hole (5) opened in a second block (2). A support surface (9a) is formed on the first block (1) so as to be brought into contact with a supported surface (2a) formed on the second block (2). In the support surface (9a) is opened a fluid flow hole (59). A gap supporting member (K) acting force upon the second block (2) in such a direction as to separate the second block (2) from the first block (1) so as to form a gap (G1) between the supported surface (2a) and the support surface (9a) is provided on the first block (1). A pull member (21) eliminates the gap (G1) by making the second block (2) approach the first block (1) against the force of the gap supporting member (K) in such a condition that an outer peripheral surface of the plug portion (27) is in close contact with an inner peripheral surface of the insertion hole (5) to bring the supported surface (2a) into contact with the support surface (9a).
摘要翻译： 插头部分（27）从第一块（1）突出以插入到在第二块（2）中打开的插入孔（5）中。 支撑表面（9a）形成在第一块（1）上，以便与形成在第二块（2）上的支撑表面（2a）接触。 在支撑表面（9a）中打开流体流动孔（59）。 间隙支撑构件（K）沿着使第二块（2）与第一块（1）分离的方向对第二块（2）施加作用力，以在支撑表面（2）之间形成间隙（G 1） （2a）和所述支撑表面（9a）设置在所述第一块（1）上。 拉动构件（21）通过使第二块（2）克服间隙支撑构件（K）的力而接近第一块（1）而消除间隙（G 1），条件是， 插头部分（27）与插入孔（5）的内周表面紧密接触，以使支撑表面（2a）与支撑表面（9a）接触。
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公开(公告)号：US06666440B2
公开(公告)日：2003-12-23
申请号：US10299325
申请日：2002-11-18
申请人： Keitaro Yonezawa , Hideaki Yokota , Yosuke Haruna
发明人： Keitaro Yonezawa , Hideaki Yokota , Yosuke Haruna
IPC分类号： B23Q308
CPC分类号： B25B5/062
摘要： A housing (3) has an upper end wall (3a) and a lower end wall (3b) which support an upper slide portion (11) and a lower slide portion (12) of a clamp rod (5) vertically movably, respectively. The rod (5) is moved downwards for clamping through a clamp spring (20). The lower slide portion (12) has an outer periphery provided with guide grooves (26), each of which comprises a helical rotary groove (27) and a straight groove (28), peripherally in plural number. Engaging balls (29) which are fitted into the respective guide grooves (26) are rotatably supported by through holes (31) provided in an upper portion of the lower end wall (3b). A sleeve (35) is externally fitted over the engaging balls (29) rotatably around an axis.
摘要翻译： 壳体（3）具有分别支撑可上下移动的夹紧杆（5）的上滑动部分（11）和下滑动部分（12）的上端壁（3a）和下端壁（3b）。 杆（5）向下移动以通过夹紧弹簧（20）夹紧。 下滑动部分（12）具有设置有多个引导槽（26）的外周，每个引导槽（26）包括螺旋形旋转槽（27）和多个直槽（28）。 装配在相应导向槽（26）中的接合球（29）由设置在下端壁（3b）的上部的通孔（31）可旋转地支撑。 一个套筒（35）以可绕轴线转动的方式外接在接合球（29）上。
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公开(公告)号：US06286420B1
公开(公告)日：2001-09-11
申请号：US09466821
申请日：1999-12-20
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
IPC分类号： F16P300
CPC分类号： F15B11/028 , F15B2211/2053 , F15B2211/30505 , F15B2211/40515 , F15B2211/50518 , F15B2211/528 , F15B2211/55 , F15B2211/6355 , F15B2211/7052 , F15B2211/76
摘要： A pneumatic hydraulic booster pump (5), an overload protecting valve (10) and a pressure compensating valve (14) are connected in parallel with an overload absorbing hydraulic chamber (3) within a slide (2) of a mechanical press (1). The pressure compensating valve (14) has a restricting passage (60) and a relief valve (61) connected to each other in series. The relief valve (61) comprises a valve closing piston (71) which pushes a relief member (72) in a direction for valve closing, a valve closing actuation chamber (73) which communicates with a compressed air supply passage (30) of the booster pump (5), and a compression spring (74) which urges the relief member (72) in the direction for valve closing.
摘要翻译： 气动液压增压泵（5），过载保护阀（10）和压力补偿阀（14）与机械压力机（1）的滑块（2）内的过载吸收液压室（3）并联连接， 。 压力补偿阀（14）具有彼此串联连接的限制通道（60）和安全阀（61）。 安全阀（61）包括一个关闭活塞（71），该阀关闭活塞沿一个关闭方向推动释放构件（72）;一个关闭致动室（73），与压缩空气供应通道 增压泵（5）和压缩弹簧（74），该压缩弹簧（74）沿着关闭方向推动释放构件（72）。
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公开(公告)号：US6113086A
公开(公告)日：2000-09-05
申请号：US962259
申请日：1997-10-31
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
摘要： An annular piston (4) is inserted into a housing (1) axially movably but unrotatably. A clamp rod (9) is hermetically inserted into a through-hole (4a) of the piston (4). When the piston (4) is lowered by a clamping spring (20), a back pressure is produced in pressurized oil within a second chamber (12) formed below the piston (4). The back pressure pushes an input portion (9a) for clamping provided at a lower end of the clamp rod (9) to a stopper (23) through a bearing (24) and a transmission plate (25). The piston (4) is lowered relatively to the clamp rod (9) at a raised position, whereby the clamp rod (9) is rotated by a converting mechanism (21).
摘要翻译： 环形活塞（4）可轴向移动但不能旋转地插入壳体（1）中。 夹紧杆（9）气密地插入活塞（4）的通孔（4a）中。 当活塞（4）被夹紧弹簧（20）下降时，在形成在活塞（4）下方的第二腔室（12）内的加压油中产生背压。 背压通过轴承（24）和传动板（25）将设置在夹紧杆（9）的下端的用于夹紧的输入部（9a）推到止动器（23）。 活塞（4）在升高位置相对于夹紧杆（9）下降，由此夹紧杆（9）由转换机构（21）旋转。
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公开(公告)号：US5887862A
公开(公告)日：1999-03-30
申请号：US852498
申请日：1997-05-07
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
CPC分类号： B23Q3/10 , B23B31/201 , Y10T279/1266 , Y10T279/17521
摘要： A support rod (3) vertically movably inserted into a housing (2) is urged upward by an advancing spring (4). An annular piston (6) is inserted between a barrel portion (2c) of the housing (2) and an outer peripheral surface of the support rod (3). A collet (10) externally fitted onto a holding and fixing portion (C) of the support rod (3) is received by a lower end wall (2b) of the housing (2). A tapered transmission member (17) externally fitted onto the collet (10) is urged downward by a holding spring (22). The urging force clamps the support rod (3) at a predetermined height through the collet (10).
摘要翻译： 垂直可移动地插入壳体（2）中的支撑杆（3）被推进弹簧（4）向上推动。 环形活塞（6）插入在壳体（2）的筒部（2c）和支撑杆（3）的外周表面之间。 外部装配到支撑杆（3）的保持和固定部分（C）上的夹头（10）被壳体（2）的下端壁（2b）容纳。 外部装配到夹头（10）上的锥形传递构件（17）被保持弹簧（22）向下推动。 推动力通过夹头（10）将支撑杆（3）夹紧在预定的高度。
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公开(公告)号：US5620024A
公开(公告)日：1997-04-15
申请号：US563294
申请日：1995-11-28
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
IPC分类号： F16K17/02 , F15B11/028 , F15B15/28 , F16K37/00
CPC分类号： F15B11/028 , F15B15/2807 , F15B15/2815 , F15B2211/20515 , F15B2211/20538 , F15B2211/40507 , F15B2211/41509 , F15B2211/50518 , F15B2211/6309 , F15B2211/6336 , F15B2211/7052 , Y10T137/8242 , Y10T137/8326
摘要： An operation member (51) is fixedly secured to a right portion of a relief member (29) inserted into a housing (20). An annular transmission member (52) externally fitted to the operation member (51) is supported by a guide groove (62) so as to be vertically movable and is urged downward by a spring (74). When the relief member (29) doesn't perform the relief operation, a detected portion (65) of the transmission member (52) is made to access a detecting portion (68) of a proximity switch (14) by the operation member (51). At the time of the relief operation, the relief member (29) and the operation member (51) are rapidly moved rightward, so that the detected portion (65) is spaced apart from the detecting portion (68) by the spring (74).
摘要翻译： 操作构件（51）固定地固定在插入壳体（20）中的释放构件（29）的右侧部分。 外部装配到操作构件（51）的环形传动构件（52）由导向槽（62）支撑，以便能够垂直移动，并通过弹簧（74）向下推动。 当释放构件（29）不执行释放操作时，通过操作构件（52）使传动构件（52）的检测部分（65）进入接近开关（14）的检测部分（68） 51）。 在释放操作时，释放构件（29）和操作构件（51）快速向右移动，使得检测部分（65）通过弹簧（74）与检测部分（68）间隔开， 。
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公开(公告)号：US5419694A
公开(公告)日：1995-05-30
申请号：US41467
申请日：1993-04-02
申请人： Keitaro Yonezawa , Shoji Yokoyama
发明人： Keitaro Yonezawa , Shoji Yokoyama
CPC分类号： B22D17/22 , B29C45/1756
摘要： A stopping device (37) is provided in a metal mould depository stand (6) and a stop cancelling device (39) is provided in a metal mould replacing carriage (3). When a metal mould (13) supported by the stand (6) is transferred onto the carriage (3), firstly the carriage (3) is moved to a location of the stand (6) a stopped condition of which is going to be cancelled, so as to make an output portion (53) of the cancelling device (39) face an actuating member (44) of the stopping device (37). Then, the output portion (53) is made to advance from a return position (G) to an advanced position (H). Thereupon, the actuating member (44) is changed over to a retracting actuation position (D), so that the actuating member (44) changes over a stopper member (42) to a retracted posture (B).
摘要翻译： 在金属模具托架（6）中设置有止动装置（37），并且在金属模具更换托架（3）中设置有止动装置（39）。 当由支架（6）支撑的金属模具（13）被转移到滑架（3）上时，首先将滑架（3）移动到停止状态将被取消的支架（6）的位置 ，以使取消装置（39）的输出部分（53）面对停止装置（37）的致动构件（44）。 然后，使输出部53从返回位置（G）前进到前进位置（H）。 因此，致动构件（44）被转换到缩回致动位置（D），使得致动构件（44）在止动构件（42）上转换到缩回姿势（B）。
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