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1. 发明专利

JPS62255604A ROTARY SERVO VALVE AND ITS CONTROL SYSTEM 失效
公开(公告)号：JPS62255604A
公开(公告)日：1987-11-07
申请号：JP9613786
申请日：1986-04-25
申请人： S G KK , SHIMADZU CORP
发明人： ICHIKAWA WATARU , MATSUKI YUJI , TANIGAKI TETSUYA
IPC分类号： F15B9/09 , F15B13/044
摘要： PURPOSE:To improve the responsibility and minute flow rate controllability of a servo valve by inserting valve members which are connected with the first and the second rotary driving body, and establish valve openings according to the relative rotating angles of both the said rotary driving bodies in a valve main body. CONSTITUTION:A valve member 1 which is connected with the first and the second motor M1, M2, and establishes a valve opening communicating with load ports C1-C4 according to the relative rotating angles of the said motors is inserted in a valve main body 3. Since the said relative rotating angles can be therefore controlled by adjusting the rotating angle of the said motors, the valve opening can be extremely smoothly and quickly adjusted to improve the responsibility of the valve. In addition to that, since the relative rotating angle is controlled by means of a time function, infinitesimally divided time in the said function can make the control of a minute flow rate possible.

2. 发明专利

JPH06182559A SPOT WELDING MACHINE 失效
公开(公告)号：JPH06182559A
公开(公告)日：1994-07-05
申请号：JP13406193
申请日：1993-05-12
申请人： S G KK
发明人： ICHIKAWA WATARU , MATSUKI YUJI , HIROHASHI SEIJI
IPC分类号： B23K11/11 , B23K11/24 , B23K11/25 , B23K11/28 , B23K11/31 , F15B15/26
摘要： PURPOSE:To control the opening and closing position between tip electrodes by detecting the moving position of pressurizing cylinder rod to impress the pressurizing force between the tip electrodes and detecting the distance between the electrodes to apply braking force on the rod. CONSTITUTION:The spot welding machine is provided with the pressurizing cylinder 1 to impress the pressurizing force between the electrodes by moving a welding gun arm, a means to detect the distance between the electrodes by detecting the position of the pressurizing cylinder rod 11, a brake means 30 which brakes the movement of the pressurizing cylinder 1, stops the movement of a welding gun and position it on the specified position, a speed control means which controls variably the moving speed of the pressurizing cylinder 1 and relaxes impact at the time of contacting between sheets and the tip electrodes and an electrode state determination means which determines the distance between the tip electrode above a specified value and informs the tip electrode opening and closing operation as mentioned above. Consequently, the opening and closing position between the tip electrodes and the moving speed can be controlled.

3. 发明专利

JPH06148022A GLASS BOTTLE INSPECTION EQUIPMENT 失效
公开(公告)号：JPH06148022A
公开(公告)日：1994-05-27
申请号：JP32138892
申请日：1992-11-06
申请人： S G KK , ISHIZUKA GLASS
发明人： ICHIKAWA WATARU , HIRAI EIICHI , KADONOSONO SHIYUUZOU , YAMAUCHI TAKESHI
IPC分类号： G01L7/00 , G01M3/24 , G01M3/26 , G01M3/32 , G01M7/00
摘要： PURPOSE:To enable detection of defective bottle regardless of the volume thereof by deciding pass/fail of bottle based on the peak and bottom amplitudes subsequent to a maximum amplitude in damped oscillation of a pressure signal produced by applying air into the glass bottle. CONSTITUTION:An air pulse is generated from an air pulse generator 11 in synchronism with input of a start signal ST from a controller 10 and applied to a glass bottle 12. A pressure sensor 16 converts variation of air pressure in the bottle 12, being transmitted through a return pipe 15, into a pressure signal PS which is then delivered to a pressure measuring unit 17. The pressure measuring unit 17 measures a maximum value P1 in the pressure waveform based on the pressure signal PS and a pressure signal P2 at the first subsequent bottom part and delivers them to a pass/fail decision circuit 18. The circuit 18 receives the signals P1, P2 and calculates a ratio PD=P2/P1 which is subsequently compared with a reference signal RS delivered from the controller 10. If PD =RS), a decision signal BS (or GS) of pass (or fail) is delivered to a host controller.

4. 发明专利

JPH0424810A SERVO CONTROL SYSTEM 失效
公开(公告)号：JPH0424810A
公开(公告)日：1992-01-28
申请号：JP12932190
申请日：1990-05-21
申请人： S G KK
发明人： ICHIKAWA WATARU , UEHARA SHINICHIRO
IPC分类号： G05D3/12
摘要： PURPOSE:To improve the response characteristic by feeding positively the position deviation compensating signal produced in response to the position deviation obtained by a position deviation arithmetic means back to the input or output side of a position control means in order to compensate the position deviation and to correct a velocity command signal. CONSTITUTION:A position steady deviation compensation arithmetic part 11 outputs a position steady deviation compensation signal alphap to an adder 2 against the input of a position deviation signal epsilonp in accordance with a prescribed correction function f (epsilonp). The adder 2 inputs both signals alphap and epsilonp to add them together and outputs a new position deviation signal (epsilonp + alphap) to a position control part 3. This new deviation signal functions to eliminate the position steady deviation of a position control loop system in a servo control system. Thus the part 3 can compensate the position steady deviation according to its fluctuation if caused occasionally by the inertia variation of the mechanical load, the variation of the frictional torque, etc., of a control subject. Then the high speed response characteristic can be improved in the position control loop system.

5. 发明专利

JPH07661A SEWING MACHINE 失效
公开(公告)号：JPH07661A
公开(公告)日：1995-01-06
申请号：JP17203893
申请日：1993-06-21
申请人： TOKAI IND SEWING MACHINE , S G KK
发明人： TAJIMA IKUO , ICHIKAWA WATARU , OSHIE NAOMASA , FUJIURA MITSUHIRO , UENISHI KOJI
IPC分类号： D05B21/00 , D05B19/12 , D05B47/04 , D05C5/04 , D05C11/08
摘要： PURPOSE:To impart an optimum tension to a sewing thread even in an embroidery seaming in which stitch width or stitch direction is continuously changed, and form an embroidery product with good touch. CONSTITUTION:A tension regulating means imparts a tension according to its control state to a sewing thread. A tension detecting means detects the actual tension generated in the sewing thread. A standard data generating means generates a standard data showing a required tension. A tension control means determines the deviation between the standard data from the standard data generating means and the actual tension detected by the tension detecting means, and controls the tension given to the sewing thread by the tension regulating means on the basis of the deviation. As the standard data generated by the standard data generating means, a tension corresponding to an embroidery seaming state such as the rotating speed of a main spindle, stitch width, stitch direction, and the angle (stitch angle) formed by the previous stitch direction and this stitch direction is preliminarily stored as the standard data generated by the standard data generating means, whereby the tension regulating means is controlled so that a tension equal to this standard data is generated in the sewing thread, and the tension equal to the standard data is actually generated. Therefore, a sewing machine can produce an embroidery product with good touch.

6. 发明专利

JPH05248410A 失效
公开(公告)号：JPH05248410A
公开(公告)日：1993-09-24
申请号：JP34364892
申请日：1992-12-01
申请人： S G KK
发明人： MATSUKI YUJI , ICHIKAWA WATARU
IPC分类号： F15B15/14 , F15B15/26 , F15B15/28 , G01B7/00
摘要： PURPOSE:To position a piston and stop a piston arbitrarily by providing rods for receiving load of a table, and supplying fluid pressure in a cylinder tube to a hydraulic brake means through a fluid pressure passage in a piston and a piston yoke. CONSTITUTION:A table 6a is connected to a piston through a piston yoke, and moved together with the piston by fluid pressure. Rods 22,23 are fixed to a cylinder tube in such a manner that the axial direction thereof is parallel to the moving direction of the table 6a, and a sensor means 25 and a brake means 24 are provided to move along the rods 22,23. The sensor means 25 detects the current position of the piston, and the brake means 24 produces the frictional force between the rods 22,23 by fluid pressure and applies braking force to the piston. The rods 22,23 are disposed in such a manner as to receive the load of the table 6a to function as beams for receiving the load of the table 6a. Accordingly, the load characteristic can be improved, and the piston can be positioned and stopped in an arbitrary position correctly.

7. 发明专利

JPH0526603A MANUFACTURE OF ROD SECTION FOR LINEAR POSITION DETECTING DEVICE 失效
公开(公告)号：JPH0526603A
公开(公告)日：1993-02-02
申请号：JP34203691
申请日：1991-11-30
申请人： S G KK
发明人： ICHIKAWA WATARU , MATSUKI YUJI
IPC分类号： G01B7/00 , G01D5/20 , G01D5/243 , G01D5/245
摘要： PURPOSE:To simplify the process for manufacturing a rod section and reduce the manufacturing cost by surface-treating a conductor portion, and sticking it on the base material of the rod section at a preset pattern. CONSTITUTION:A coil section having two or more primary coils 1A and corresponding secondary coils 2A excited by primary AC signals out of phase from each other and a rod section 6 linearly displaceable relatively to it are provided. Multiple conductor sections 6b are repeatedly provided at the preset interval along the linear displacement direction so that the rod section 6 can form an overcurrent passage form the magnetic flux by the coil section. The signal phase-shifted with the primary AC signal in response to the relative linear position of the rod section 6 is obtained on the secondary coil 2A side. A conductive material is stuck on the whole base material of the rod section, then the unnecessary portion except for a preset pattern is removed to for the conductor 6b. The linear position can be detected with high precision by the phase shift system over a long range, and the cost can be reduced.

8. 发明专利

JPH0478720B2 失效
公开(公告)号：JPH0478720B2
公开(公告)日：1992-12-11
申请号：JP14672385
申请日：1985-07-05
申请人： S G KK
发明人： ICHIKAWA WATARU , MATSUKI JUJI
IPC分类号： C25D7/00 , C23C28/00 , G01B7/00

9. 发明专利

JPH0424041A CONTROLLING SYSTEM FOR POSITIONING SUSPENDED OBJECT 失效
公开(公告)号：JPH0424041A
公开(公告)日：1992-01-28
申请号：JP12932390
申请日：1990-05-21
申请人： S G KK
发明人： ICHIKAWA WATARU , MATSUKI YUJI , TSUTSUMI SHUZO
IPC分类号： A63J1/02 , G05D1/04
摘要： PURPOSE:To position a suspended object accurately by adding a position correction signal corresponding to a differential value between detecting signals of first and second position detectors to a position commanding signal to correct an error between both detecting signals. CONSTITUTION:The outputs P1, P2 of a position sensor 44 and height measurer 45 are converted to position data P3, P4 by position sensor converting means 15, 16. The position data P3 show the position of a servo motor 43 controlled by position commanding data F0 outputted from an upper controller 10, and the position data P4 show the position of an actual variable pulley 35. A difference between the position data P3 outputted from the position sensor converting means 15 and the position data P4 outputted from the position sensor converting means 16 is obtained to add a correction pulse Pc corresponding to the differential value to the position commanding data F0 and correct an error caused by discrepancies between both position data P3, P4. Thus, suspended objects can accurately be positioned at positions commanded by the position commanding data F0.

10. 发明专利

JPS62161001A APPARATUS FOR DETECTING ABSOLUTE POSITION 失效
公开(公告)号：JPS62161001A
公开(公告)日：1987-07-17
申请号：JP26392486
申请日：1986-11-07
申请人： S G KK
发明人： ICHIKAWA WATARU , MATSUKI YUJI
IPC分类号： G01B7/00 , G01D5/245
摘要： PURPOSE:To make it possible to detect an absolute position over a wide range with high accuracy, by together providing two or more kinds of patterns to a rod and calculating the position detection signal in accordance with the positional relation of a detection head to the rod at every pattern. CONSTITUTION:When a rod part 3 displaces to the axial direction thereof and a rectangular pattern 3a enters the coils A-D of a first head 1, an eddy current flows to the pattern 3a corresponding to the penetrating quantity of said head 1. The change in magnetic resistance due to this eddy current loss is generated in the magnetic circuits of the coils A-D. AC signals each having a peak level corresponding to said magnetic resistance is induced in these secondary coil. By this method, the relative position of the rod part 3 can be detected as an absolute value in the range of one pitch length P1 of the pattern 3a. Further, the head 1 responds only to the pattern 3a by maskings 5, 6 and a second detection head 2 responds only to the pattern 3b. In the same way, the position of the rod part 3 in the range of one pitch length P2 the pattern 3b is calculated. By the combination of both positions, the position in a magnified range is obtained.

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