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1. 发明专利

JP2002147405A HYDRAULIC DRIVER 失效
公开(公告)号：JP2002147405A
公开(公告)日：2002-05-22
申请号：JP2000347344
申请日：2000-11-14
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO , OGURA NORIMASA , OOBA TAKATSUNA , ISHIMARU NORIYUKI
IPC分类号： F15B9/04 , F15B9/09 , F15B11/04
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic driver controlling speed driven by a hydraulic actuator so as to fluctuate it in accordance with fluctuation of load force acting on the hydraulic actuator and providing an optimal speed control to the fluctuation of the load. SOLUTION: This hydraulic driver is provided with a control part 19 controlling a rotational speed of an electric motor 4 so as to make an actual value V of speed driven by a piston rod 5A of a single rod cylinder 5 coincide with a desired value V1 of speed, and the desired value V1 of speed is set in a fluctuating correlation to the fluctuation of the load F acting on the piston rod 5A. By this, since the desired value V1 of speed is fluctuated and set in correlation to the fluctuated load force F when the load force F fluctuates and the actual value V of speed is controlled to coincide with the desired value V1 of speed, the speed V driven by the piston rod 5A can be controlled so as to fluctuate in accordance with the fluctuation of the load force F and the optimal speed control to the fluctuation of the load force F can be provided.

2. 发明专利

JPH10314999A HYDRAULIC PRESSURIZED MACHINING DEVICE 失效
公开(公告)号：JPH10314999A
公开(公告)日：1998-12-02
申请号：JP13943797
申请日：1997-05-13
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO , OOBA TAKATSUNA
IPC分类号： B30B15/00 , B30B1/32 , B30B15/20 , B30B15/22
摘要： PROBLEM TO BE SOLVED: To suppress useless delivery from a hydraulic pump and to obtain the machining device with a small power loss by controlling, through an inverter, a motor for driving a hydraulic pump in such a manner that, after the pressure of a hydraulic cylinder reaches a target value, if it exceeds the target value, a signal for setting the speed of the hydraulic cylinder in the counter pressurizing direction is made smaller than in other cases. SOLUTION: With a hydraulic cylinder 5 actuated, a machining tool 7 is made closer to a work 6 at high speed. With the position of the hydraulic cylinder 5 measured by a linear scale 9, if the machining tool 7 approaches the work 6, the number of revolution of a motor 2 is reduced, decelerating the speed of the hydraulic cylinder 5. The machining tool 7 comes into contact with the work 6, increasing the pressurizing force. When the pressurizing force measured by a load cell 8 reaches the 60% of a target pressure, the speed of the hydraulic cylinder 5 is further reduced. With the pressurizing force reaching the target pressure, the motor 2 is minutely advanced or retreated thereafter within the time set by a timer, thereby maintaining the pressurizing force at the target value.

3. 发明专利

JPH0566846A ELECTROMAGNETIC PROPORTIONAL VALVE 失效
公开(公告)号：JPH0566846A
公开(公告)日：1993-03-19
申请号：JP25573491
申请日：1991-09-06
申请人： TOYOOKI KOGYO KK
发明人： SUGIYAMA MASARU , SAKAI MITSUO , OOBA TAKATSUNA , INAISHI FUMINORI
IPC分类号： F16K31/06 , G05D7/06
摘要： PURPOSE:To easily obtain an adjustment operation of a setting signal for setting an adjustment flow rate or adjustment pressure of a valve, in a position separated from an installation place of the valve. CONSTITUTION:A setting unit 4 which has plural setting devices and rise/fall regulators in the inside and outputs a setting signal is loaded on a valve main body 1 provided with electromagnets 2A, 2B and connected electrically through a wiring 5 to an amplifying unit 3 so that remote control can be executed from the amplifying unit 3 for supplying a driving current corresponding to the setting signal to the electromagnets 2A, 2B. In such a way, after the valve is installed, when plural setting devices and rise regulators are subjected to adjustment operation in order to adjust the setting signal, a worker can execute a work by positioning the setting unit 4 at hand without going into a narrow and small place in which the valve is installed.

4. 发明专利

JP2003184811A HYDRAULIC DRIVE 审中-公开
公开(公告)号：JP2003184811A
公开(公告)日：2003-07-03
申请号：JP2001388750
申请日：2001-12-21
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO , TAKAHASHI KIYOSHI , OOBA TAKATSUNA , ISHIMARU NORIYUKI
IPC分类号： F15B11/08 , F15B11/00
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic drive which drives load by a single hydraulic actuator with small thrust and makes it possible to minimize an entire device. SOLUTION: The hydraulic drive is elevated load W by supplying pressurized liquid delivering from a hydraulic pump 7 which is rotatably driven by an electric motor 10 to an chamber 11B on cap side of a double acting cylinder 11 on which weight in the load W acts. A control element 24 controls the rotation frequency of the electric motor 10 so as to coincide value of pressure in the chamber 11B on the cap side detected by a pressure detected sensor 23 with desired value and the desired value establishes to add predefined value to the value of the pressure corresponding to the weight in the load W. The thrust driving to elevate the load W is configured to base on the predefined value, thereby and the entire device can be minimized because it can drive to elevate the load W by the single double acting cylinder 11 with the small thrust by establishing the predefined value to small value. COPYRIGHT: (C)2003,JPO

5. 发明专利

JPH0650458A UNIT FOR SETTING OPERATION OF ELECTROMAGNETIC PROPORTIONAL VALVE 失效
公开(公告)号：JPH0650458A
公开(公告)日：1994-02-22
申请号：JP22071792
申请日：1992-07-27
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO , OOBA TAKATSUNA
IPC分类号： F16K31/06
摘要： PURPOSE:To provide a unit for setting the operation of an electromagnetic proportional valve, which can stably set a regulated flow rate and a regulated pressure for a desired valve. CONSTITUTION:A unit for setting the operation of an electromagnetic proportional valve incorporates a pair of input units 1A, 1B for receiving signals from external switches 6A to 6D, a pair of switching units 9A, 9B for selecting a desired one of a plurality of time-constant circuits, a pair of rise-up and-down regulators 18A, 18B for delivering outputs in accordance with thus selected time constant circuit, and a pair of detectors 21A, 21B for detecting outputs from the regulators 18A, 18B. Further, the pair of detectors 21A, 21B are connected to an interlock circuit 24 so that the detector 21A detects a set signal so as to isolate the input unit 1B, or the other detector 21B detects a set signal so as to isolate the other input unit 1A.

6. 发明专利

JPH05141564A ELECTROMAGNETIC PROPORTIONAL VALVE 失效
公开(公告)号：JPH05141564A
公开(公告)日：1993-06-08
申请号：JP32995991
申请日：1991-11-18
申请人： TOYOOKI KOGYO KK
发明人： SAKAI MITSUO , OOBA TAKATSUNA
IPC分类号： F16K31/06
摘要： PURPOSE:To prevent an operator from performing careless adjusting operation unless there is a need to carry out the adjustment of a setting signal, without impairing such an advantage that the setting signal can be adjusted without being influenced by the installation place of the valve. CONSTITUTION:On both axial ends of an amplifying unit 3 that has been mounted on a valve body 1, engaging grooves 10, 11 are formed, and both engaging parts 8D, 8E of a fitting member 8 made of a wire material and having elasticity are inserted into the engaging grooves 10, 11; thereby, a setting unit 6 which has been electrically connected to the amplifying unit 3 via a wire 7 for outputting a setting signal to the amplifying unit 3 is fitted and fixed on the amplifying unit 3. And, by disconnecting either of the engaging parts 8D or 8E of the fitting member 8 from the engaging groove 10 or 11, the setting unit 6 can be removed from the amplifying unit 3, thus an operator can carry out the adjustment of a setting signal by placing the setting unit 6 in an optimum position near at hand in accordance with the length of the wire 7.

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