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公开(公告)号：US5174554A
公开(公告)日：1992-12-29
申请号：US897094
申请日：1992-06-11
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
摘要： A first piston (11) is inserted into a second piston (12) within a housing (4). An acting point portion (A), a fulcrum portion (C) and a wedge type pressure receiving surface (B) are provided in the first piston (11) in order from front side. A first swing gap (37) and a second swing gap (38) are provided in a space below the front portion of the first piston (11) and in a space above the rear portion thereof respectively. The second piston (12) is provided with a pushing surface (F) facing the pressure receiving surface (B) from below. At the time of clamping, by a fluid pressure within a first actuation chamber (21) both the pistons (11) (12) are advanced and after that the second piston (12) is advanced relative to the first piston (11). Thereupon, the acting point portion (A) is swung downwardly about the fulcrum portion (C).
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公开(公告)号：US5125234A
公开(公告)日：1992-06-30
申请号：US691300
申请日：1991-04-25
申请人： Keitaro Yonezawa , Kouichi Kojyo
发明人： Keitaro Yonezawa , Kouichi Kojyo
IPC分类号： F15B15/14 , F15B11/032 , F15B11/072
CPC分类号： F15B11/0325 , F15B11/0725 , F15B2211/20538 , F15B2211/212 , F15B2211/214 , F15B2211/30525 , F15B2211/327 , F15B2211/40515 , F15B2211/41518 , F15B2211/41572 , F15B2211/426 , F15B2211/50554 , F15B2211/7052 , F15B2211/7716 , Y10T409/309464
摘要： In a hydraulic cylinder apparatus of a type actuated by a booster, a plunger chamber (39) of a booster (32) is connected in communication with an extension cylinder chamber (35) of a hydraulic cylinder (30). An annular oil make-up chamber (48) is disposed outside an outer peripheral surface of the cylinder chamber (35). The oil make-up chamber (48) is connected in communication with the plunger chamber (39) and an electromagnetically opened and closed type shutoff valve (49) is interposed between both said chambers (39) (48).
摘要翻译： 在由增压器致动的液压缸装置中，升压器（32）的柱塞室（39）与液压缸（30）的延伸气缸室（35）连通。 环形油补充室（48）设置在气缸室（35）的外周面的外侧。 油补充室48与柱塞室39连通，并且在两个室（39）（48）之间插入电磁打开和关闭型截止阀（49）。
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公开(公告)号：US5113899A
公开(公告)日：1992-05-19
申请号：US644784
申请日：1991-01-23
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
IPC分类号： B23Q3/02 , F16K15/18 , F16K31/524
CPC分类号： F16K15/18 , F16K31/52408 , Y10T137/7728 , Y10T137/7876
摘要： In a check valve with a valve opening device, a check valve member (32) inserted into a check valve chamber (21) formed in a valve box (20) is resiliently urged for valve closing by means of a check spring (33) as well as the check valve member (32) is manipulated for valve opening through a manipulation lever (45), an actuator shaft (43) and a valve opening member (36) in order. The valve opening member (36) is adapted to be held at a valve opening position (F) by means of a valve opened state holding means (38). The valve opened state holding means (38) is arranged in both the valve opening member (36) and the valve box (20). A manipulation lever return spring (46) is disposed in a manipulation force transmitting system from the manipulation lever (45) to the valve box (20) through the actuator shaft (43).
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公开(公告)号：US5044400A
公开(公告)日：1991-09-03
申请号：US554900
申请日：1990-07-20
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
IPC分类号： F16K11/044 , F15B13/04 , F16K11/14
CPC分类号： F15B13/0405 , Y10T137/87225 , Y10T137/87241
摘要： A control valve assembly for a pressurized oil has a valve chamber (4) within which a pressure supply valve seat (15), a first chamber (11), a short-circuit prevention valve seat (17), a second chamber (12) and a return valve seat (16) are arranged in order. A check valve member (19) inserted into the first chamber (11) is adapted to be resiliently urged to the pressure supply valve seat (15) for valve closing by means of a valve closing spring (19) through a resilient sealing member (21). A return valve member (22) and a short-circuit prevention valve member (23) are inserted into the second chamber (12) in series. The return valve member (22) is adapted to be resiliently urged to the return valve seat (16) for valve closing by means of another valve closing spring (30). Under a pressure released condition in which the return operation means (37) is operated, the short-circuit prevention valve member (23) is adapted to be actuated toward the short-circuit prevention valve seat (17) for valve closing by a valve opening member (43) through the return valve member (22).
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公开(公告)号：US5018617A
公开(公告)日：1991-05-28
申请号：US501404
申请日：1990-03-23
申请人： Ichiro Miyata , Ichiro Kitaura , Keitaro Yonezawa
发明人： Ichiro Miyata , Ichiro Kitaura , Keitaro Yonezawa
CPC分类号： B23Q7/1431 , Y10T29/5196
摘要： The present invention relates to a workpiece pallet changer which changes a work pallet fitted on a pallet positioning device on the table of a machine tool. The changer comprises a moveable pallet mounting assembly disposed at plural locations along the peripheral surface of a rotatable frame, each of which engages a work pallet to permit transfer of the work pallet between the pallet mounting assembly located on the surface of the rotatable frame and the pallet positioning device, while simultaneously allowing chips fall automatically from the work pallet as it rotates downward.
摘要翻译： 本发明涉及一种工件托盘交换器，其将安装在托盘定位装置上的作业托盘改变在机床的工作台上。 更换器包括可移动的托盘安装组件，其设置在沿着可旋转框架的周边表面的多个位置处，每个位置接合工作托盘，以允许工件托盘在位于可旋转框架的表面上的托盘安装组件和 托盘定位装置，同时允许芯片在向下旋转时自动从工作托盘落下。
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公开(公告)号：US4812109A
公开(公告)日：1989-03-14
申请号：US121911
申请日：1987-11-17
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
CPC分类号： F01L25/066 , F04B9/107
摘要： A piston slidably inserted into a cylinder is reciprocated by fluid pressure such as pneumatic pressure and hydraulic oil and a spring is used to ascend the piston. A spool-shaped pilot valve element is provided to allow a supply-discharge valve disc to take supply and discharge positions, thus fluid pressure being supplied to and discharged from the cylinder. When the supply-discharge disc is actuated to take the supply position from the discharge position, the actuated force (supply position and discharge position) becomes stronger while the supply-discharge valve disc is in operation. When the supply-discharge valve disc is actuated to take the discharge position from the supply position, the back pressure resistance applied to the supply-discharge valve disc become weaker while the supply-discharge valve disc is in operation.
摘要翻译： 可滑动地插入到气缸中的活塞通过诸如气压和液压油的流体压力往复运动，并且使用弹簧来升高活塞。 提供了一种阀芯形的先导阀元件，以允许供排气阀盘获取和排出位置，从而将流体压力供应到气缸和从气缸排出。 当供给排出盘被驱动以从排放位置获取供应位置时，供应排出阀盘在运行时致动力（供应位置和排出位置）变得更强。 当供给排出阀盘被致动以从供给位置取出排出位置时，供给排出阀盘在运行时施加到供给排出阀盘的背压阻力变弱。
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17.发明授权
公开(公告)号：US4524660A
公开(公告)日：1985-06-25
申请号：US531573
申请日：1983-09-12
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
CPC分类号： B26D7/1818 , B21D28/002 , B21D45/003 , Y10T83/2153 , Y10T83/8858
摘要： An improved pneumatic-hydraulic driving device for the knockout mechanism associated with the slide of a press-machine wherein the device serves to actuate the knockout mechanism in a controlled manner to provide cushioning motion during punching of the work, and knocking out motion after punching to permit removal of the punched work by a transfer machine, with the device being particularly useful in the fabrication of printed circuit plates wherein the device serves to decrease cycle-time of fabrication and increase quantity of production.
摘要翻译： 一种改进的用于与压机的滑动相关联的脱模机构的气动液压驱动装置，其中该装置用于以受控的方式致动敲除机构，以在冲压工件期间提供缓冲运动，并且在冲压之后敲低运动 允许通过转移机器去除冲压的工件，该装置在印刷电路板的制造中特别有用，其中该装置用于减少制造的循环时间并增加生产量。
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公开(公告)号：US4449907A
公开(公告)日：1984-05-22
申请号：US512663
申请日：1983-07-11
申请人： Keitaro Yonezawa , Tadao Utsumi
发明人： Keitaro Yonezawa , Tadao Utsumi
IPC分类号： B22D17/22 , B21D37/04 , B21D37/14 , B23Q7/14 , B29C41/00 , B29C45/00 , B29C45/17 , B29C45/26 , B29C45/76 , B30B15/02 , B29F1/00
CPC分类号： B21D37/14 , B21D37/147 , B23Q7/1442 , B29C45/1756 , B30B15/028
摘要： A device for exchanging dies for a machine using dies is disclosed, wherein a pair of carriage cars are adapted to be movable in front of a die mounting space between a stationary plate and a movable plate of the machine to which the dies are clamped, transfer means for exchanging the dies between the die mounting space and the carriage car are provided, a main unit of a push-pull device is provided in front of the carriage car independently thereof so that the dies can be changed by this push-pull device between the carriage car and the die mounting space.
摘要翻译： 公开了一种用于使用模具的机器更换模具的装置，其中一对滑架轿厢适于在固定板和夹具的机器的可移动板之间的模具安装空间的前面可移动，转移 提供了在模具安装空间和滑架轿厢之间更换模具的装置，独立地在滑架轿厢的前面设置有推拉装置的主单元，从而可以通过该推拉装置在两 车厢和模具安装空间。
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公开(公告)号：US4348883A
公开(公告)日：1982-09-14
申请号：US177122
申请日：1980-08-11
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
CPC分类号： B21D37/14 , B30B15/028 , Y10S100/918
摘要： An auxiliary die conveyor includes a metal support jointed to a bolster and a die carrier including a pair of side plates, the carrier further including a hanging means in its upper tail section, the support metal including a depression adapted to interlock with the hanging means in such a manner as to allow the carrier to rotate in the depression while a lower part of the carrier comes into abutment with the support metal, thereby preventing the carrier from lowering below the level of the bolster.
摘要翻译： 辅助模具输送机包括连接到垫圈的金属支撑件和包括一对侧板的模具托架，托架还包括在其上尾部分中的悬挂装置，支撑金属包括适于与悬挂装置互锁的凹陷 这样一种方式，即允许载体在凹陷中旋转，同时载体的下部与载体金属邻接，从而防止载体降低到低于垫块的水平面。
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公开(公告)号：US4210168A
公开(公告)日：1980-07-01
申请号：US950682
申请日：1978-10-12
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
CPC分类号： F16K1/305 , F16K1/306 , F16K1/307 , F16K17/06 , F17C13/04 , F17C2205/0335 , F17C2205/0385 , F17C2205/0394 , F17C2227/048 , Y10T137/7613 , Y10T137/7782 , Y10T137/7783 , Y10T137/7835 , Y10T137/88054
摘要： A pressure-responsive valve unit is received in the cavity of a valve assembly housing, the inner end of the cavity being connected with a fluid container. The valve unit includes a main body having a chamber containing a check valve body that is movable toward and away from engagement with a valve seat on the main body, the valve seat facing the check valve body and the inlet end of the cavity, and the main body having passage means communicating fluid from the container to the front end portion of the check valve body. The check valve body is biased into engagement with the valve seat by a spring, the force of which is adjustable with a plug threaded into the inner end of the main body chamber. An outlet bore extends from the outer end of the main body to the valve seat, and the check valve body is engageable by a push rod inserted through said outlet bore.
摘要翻译： 压力响应阀单元被容纳在阀组件壳体的空腔中，空腔的内端与流体容器连接。 阀单元包括主体，该主体具有容纳止回阀体的室，该止回阀体可朝向和远离与主体上的阀座接合，阀座面向止回阀体和空腔入口端， 主体具有将流体从容器连通到止回阀体的前端部的通道装置。 止回阀体通过弹簧被偏置成与阀座接合，弹簧的力通过螺纹连接到主体腔的内端中的塞子来调节。 出口孔从主体的外端延伸到阀座，并且止回阀体可通过插入通过所述出口孔的推杆而接合。
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