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1. 发明专利

JPH1154905A PULSE HEAT TYPE JUNCTION DEVICE AND METHOD FOR CONTROLLING IT 失效
公开(公告)号：JPH1154905A
公开(公告)日：1999-02-26
申请号：JP22206097
申请日：1997-08-05
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI , ISHII KENICHI
IPC分类号： G01N25/72 , B23K3/04 , H02M9/00 , H05K3/32 , H05K3/34
摘要： PROBLEM TO BE SOLVED: To reduce the quantity of heat transferred to a work at the time of joining the work to the section to be joined of a heater so as to prevent the flowing out of solder from the section to be joined by controlling the pressing force applied to the section to be joined upon detecting that the temperature of the heater reaches a set lower limit temperature which is lower than a temperature profile while the temperature of the heater is raised. SOLUTION: When a discriminating means 82 judges that the temperature of a heater reaches a first lower limit temperature while the temperature of the heater is raised, a CPU 70 sends a signal to a pressing force control means 68 and a cylinder 18 lowers a heater chip 22 and presses the chip 22 against a work with a set pressure. When the discriminating means 82 detects that the temperature of the heater reaches a second lower limit temperature as the heating step of the heater enters a second step, the control means 68 lowers the pressing force by lowering the air pressure supplied to the cylinder 18 by means of a pressure adjusting section 66. Since the pressing force is lowered when the temperature of the heater approaches the melting temperature of solder in such a way, the flowing out of molten solder to the outside from a section to be joined can be prevented.

2. 发明专利

JPH1034324A PULSE HEAT WELDING POWER SOURCE 失效
公开(公告)号：JPH1034324A
公开(公告)日：1998-02-10
申请号：JP21416096
申请日：1996-07-25
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI
IPC分类号： B23K3/04 , B23K3/047
摘要： PROBLEM TO BE SOLVED: To save the cost of an excess unit by supplying a timing signal in sequence control from a built-in timing circuit of a welding power source. SOLUTION: At the time of supplying a work, the lowering command of a welding head 51 is transmitted to a solenoid valve 8c for lowering from a pulse heat power source body 12 and the air is supplied and then, the welding head 51 is started to the lowering. When a heater tip is in press-contact with the work, heating current is conducted to the heater tip and the heating is started. When the welding of the work completes, a feedback signal is returned back to the pulse heat power source body 12 from the welding head 51. The heater tip and a solenoid valve 8a for heat sink are driven with a driving circuit respectively and the solenoid valve 8a for cooling is opened and the air for cooling is sprayed and the cooling is executed. At the time of cooling the heater tip to the solid point of solder, the driving circuit of the solenoid valve 8a is switched off to stop the blowing of the air. Successively, the welding head 51 is elevated to complete one cycle.

3. 发明专利

JPH1024377A WELDING POWER UNIT FOR PARALLEL GAP WELDING 失效
公开(公告)号：JPH1024377A
公开(公告)日：1998-01-27
申请号：JP19522596
申请日：1996-07-08
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI , ITO ATSUSHI
IPC分类号： B23K11/24 , B23K11/11 , H02M9/00
摘要： PROBLEM TO BE SOLVED: To suppress temp. rise of a surrounding member by supplying the AC having a frequency significantly higher than a frequency of commercial power source from an inverter part of welding power unit to the primary side of welding transformer so as to greatly quicken temp. rise of a weld zone to complete in very short time. SOLUTION: When pushing a start switch, a PWM control part 110 sends pulse signal to a switching element 108. When simultaneously turning a pair of switching elements 108a, 108b at diagonal line to ON, electric current is caused to flow in the arrow direction shown by a solid line. When simultaneously turning other switching elements 108c, 108d to ON, electric current is caused to flow in the arrow direction shown by a broken line. Thus, a high voltage AC is induced to the secondary side of welding transformer 114, welding current is caused to flow to welding electrodes 116a, 116b to conduct welding, the welding current at this time changes its direction with the same frequency as the frequency (roughly 1kHz ) of inverter 106.

4. 发明专利

JPH1015670A METHOD FOR COMPENSATING CAPACITOR CAPACITY IN CAPACITY TYPE WELDING POWER SOURCE, AND CIRCUIT THEREFOR 失效
公开(公告)号：JPH1015670A
公开(公告)日：1998-01-20
申请号：JP19280696
申请日：1996-07-03
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI
IPC分类号： B23K11/26 , H02J1/00 , H02M9/00
摘要： PROBLEM TO BE SOLVED: To remove the variation of capacity of a capacitor due to temp. etc., by turning off charging current of the capacitor when the actual measured value becomes a reference voltage of the therely measuring the voltage of the capacitor. SOLUTION: A reference energy Er stored in the capacitor 52 from a reference capacity Cr and the reference voltage Vr of the capacitor 52 is calculated by a CPU. The actual measured capacity value Ct of the capacitor 52 is calculated at each charging of the capacitor 52 from a voltage ΔVt obtained by integrating the voltage of the capacitor 52 for an arbitrary time Δt and a constant current I from a fixed current source 2. A correction coefficient of the capacitor is calculation from this actual measured capacity Ct and the reference energy Er is calculated and the reference voltage Vr corresponding to the reference energy Er is calculated. The actual measured voltage Vt is calculated from the correction coefficient and the reference voltage Vr, and it is judged that this actual measured voltage value V is equal to the reference voltage Vr of the capacitor. Then, at this time, the variations of the voltage and the capacity can be removed by turning off the charging to the capacitor 52.

5. 发明专利

JPH07236040A COLOR LINE SENSOR CAMERA 失效
公开(公告)号：JPH07236040A
公开(公告)日：1995-09-05
申请号：JP2443194
申请日：1994-02-22
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI
IPC分类号： G01J3/46 , G02B26/10 , H04N1/04 , H04N1/19
摘要： PURPOSE:To provide a color line sensor camera, in which the resolution of color and position is excellent, and miniaturization and light weight configuration are facilitated. CONSTITUTION:A drive shaft 6a of a stepping motor 8 is coaxial to a shaft of a octal prism optical bandpass filter 2. A lens 4 receives an object light emitted from an object 9 and forms the image of the object 9 onto a line sensor 5. The optical bandpass filter 2 is made up of flat filters 2a-2h, and the transparent wavelength band of the filters 2a-2h differs from each other. A picture by one horizontal scanning line is generated by the line sensor 5. A galvanometer 1 drives a reflecting mirror 1c intermittently to scan an object image on the line sensor 5 in a direction orthogonal to a lengthwise direction of the line sensor 5. While the angle of the reflecting mirror 1c is advanced by one horizontal scanning line interval, the stepping motor 6 advances intermittently the optical bandpass filter 2 by 2pi/8 radian each to separate the object light by one horizontal scanning line into 8 colors.

6. 发明专利

JPH05332823A 失效
公开(公告)号：JPH05332823A
公开(公告)日：1993-12-17
申请号：JP16232292
申请日：1992-05-28
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI
IPC分类号： G01J1/02 , G01J5/02 , G01J5/28
摘要： PURPOSE:To constantly maintain the sensitivity of an infrared ray sensor to be constant by detecting an environment temperature, flowing a cooling current where the relative cooling temperature difference of a Peltier element which cools the infrared ray sensor, and then controlling the gain of a voltage- controlled amplifier by a control voltage corresponding to the environment temperature. CONSTITUTION:A constant amount of current is fed to a Peltier element 1 from a constant-current source circuit 6 so that the maximum cooling temperature of the element 1 is achieved. The video signal from an infrared ray sensor 2 is inversely proportional to the cooling temperature of the sensor 2. Then, the environment temperature which is detected by a room sensor 4 is amplified by an operational amplifier IC4 and then the offset voltage of a gain characteristic curve is set by a compensation circuit 7 consisting of an operational amplifier IC4, an A/D converter IC6, a ROM IC7, etc. The signal is input to an amplifier 9 and the gain of the video signal from the sensor 2 is controlled, thus compensating the video signal level according to difference in the environmental temperature.

7. 发明专利

JPH09320739A PULSE HEAT POWER SUPPLY 失效
公开(公告)号：JPH09320739A
公开(公告)日：1997-12-12
申请号：JP13998396
申请日：1996-06-03
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI
IPC分类号： H05B3/00 , B23K3/047 , G09F9/00 , H02M1/08
摘要： PROBLEM TO BE SOLVED: To observe time variations in a heating temperature. SOLUTION: A temperature of a heater tip 8 to which an AC current is to be supplied is measured by means of a thermocouple 9. The temperature of a printed circuit board 22 is measured by means of a thermocouple 10, and the current flowing a transformer 4 is measured by means of a current detector 5. A CPU 18 receives a sample value of an integrator 14 from an A/D converter 16, calculates the temperature of the heater tip 8 every time the sample value of an amplifier 12 is obtained, and calculates the temperature of a bonded material every time the sample value of an amplifier 13 is obtained. Thus, time variation in the temperature of the heater tip 8 and of the bonded material and time variation of the current flowing the transformer 4 are obtained. And, the CPU 28 displays graphically the obtained time variation on a display device 20.

8. 发明专利

JPH09277066A TRANSISTOR SYSTEM WELDING POWER SOURCE DEVICE 失效
公开(公告)号：JPH09277066A
公开(公告)日：1997-10-28
申请号：JP11844996
申请日：1996-04-16
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI , MURAKAMI KATSUYUKI
IPC分类号： B23K11/00 , B23K11/24 , B23K11/26 , H02M9/00
摘要： PROBLEM TO BE SOLVED: To secure substantial improvement in a tact speed by greatly curtailing charging time of a capacitor. SOLUTION: With a power source 1 changed from a conventional single phase AC input to a three phase AC input, a large reduction in ripple content is contrived for the DC output in an AC/DC converter 11. Consequently, the required capacity of a smoothing capacitor 12 is markedly reduced, greatly curtailing the charging time, substantially improving the generating efficiency per unit hour of the output current 101 transmitted under the control of a power MOSFET 13, thereby securing quickness in welding by a welding part 2.

9. 发明专利

JPH07320046A IMAGE PROCESSOR 失效
公开(公告)号：JPH07320046A
公开(公告)日：1995-12-08
申请号：JP12994794
申请日：1994-05-20
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI
IPC分类号： H04N1/403 , G06T1/00 , G06T1/60
摘要： PURPOSE:To obtain binarized data with a simple configuration by binarizing a video signal by a comparator and converting the output of the comparator into sampling data by a flip-flop circuit. CONSTITUTION:The comparator 2 compares the video signal Va with threshold value Vth from a threshold value generating circuit 1. A flip-flop circuit 3 latches the output Vb of the comparator 2 each time a clock signal CLK is inputted. A synchronous separating circuit 5 extracts a vertical and a horizontal synchronizing signal from the signal Va. An acknowledgement signal generating circuit 6 generates write acknowledgement signals VEN and HEN on the basis of those signals. A one-bit memory 4 stores the output of the flip-flop circuit 3 when a write acknowledgement signal is outputted from an AND circuit 7. Thus, the binarized data are stored in a memory 4 and character patterns, etc., are recognized with the data.

10. 发明专利

JPH07295659A PELTIER ELEMENT DRIVING CIRCUIT 失效
公开(公告)号：JPH07295659A
公开(公告)日：1995-11-10
申请号：JP10626094
申请日：1994-04-22
申请人： NIPPON AVIONICS CO LTD
发明人： ISHIDA TAKASHI
IPC分类号： G05D23/20
摘要： PURPOSE:To reduce power consumption and alorific value nearby a Peltier element. CONSTITUTION:An error amplifier 4a outputs the difference between the output of an amplifier 3, which amplifies the forward voltage Vf across a diode 1, and a voltage Vref. A comparator 4c compares a triangular voltage Vt, generated by an oscillator 4b, with a voltage Ve. A voltage Vc is in a pulse shape and used for on/off control over a transistor(TR) 5. As the temperature of the Peltier element 6 rises, the voltage Vf drops and the ON time of the TR 5 becomes long, so that the time wherein a current is supplied to the Peltier element 6 becomes long. As the temperature falls, the time wherein the current is supplied to the Peltier element 6 becomes short. The TR 5, therefore, operates as a switch, so the power consumption of the TR 5 is reducible.

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