CN2300472Y - Digital fully automatic submerged arc welding rectifier remote controller - Google Patents
Digital fully automatic submerged arc welding rectifier remote controller Download PDFInfo
- Publication number
- CN2300472Y CN2300472Y CN 97219174 CN97219174U CN2300472Y CN 2300472 Y CN2300472 Y CN 2300472Y CN 97219174 CN97219174 CN 97219174 CN 97219174 U CN97219174 U CN 97219174U CN 2300472 Y CN2300472 Y CN 2300472Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- output
- forming
- voltage
- remote control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Arc Welding Control (AREA)
Abstract
The utility model relates to a digital fully automatic submerged arc welding rectifier remote controller. The utility model comprises a remote control display, a receiving main board, a master control board of an arc welding rectifier. The receiving main board is installed in the arc welding rectifier, one end of a handle line is connected with the master control board of the arc welding rectifier and the receiving main board, and the other end of the handle line is connected with a welding handle. The welding handle can be contacted with an increasing / opening electrode and a decreasing / closing electrode of the remote control display, and the remote control display is connected with a grounding magnetic pole which is contacted with a workpiece. A functional switch, a bicolor luminous tube, a sounding hole and a display screen are arranged on the remote control display. A receiver of the digital fully automatic submerged arc welding rectifier remote controller comprises an annular transmitting-receiving circuit, a double-frequency cipher circuit, a data time-sharing sending circuit, a receiving assembly circuit, etc. The utility model is simply connected with the arc welding rectifier; the utility model has the advantage of convenient, safe and reliable operation; the anti-interference performance of the utility model is better than the anti-interference performance of the remote controller of the existing arc welding rectifier.
Description
The utility model relates to a kind of device of arc welding rectifier remote control.Present domestic construction site is more and more higher to the requirement of welding procedure and quality.The arc welding rectifier that is using (hereinafter to be referred as welding machine) all is to show welding current, adjusting welding current and switch welding machine electric power on welding machine.Yet a very long distance is arranged again between welding machine and the welding work pieces, and can really show the actual welding electric current at the construction field (site) and regulate electric current becomes a great problem.This problem is more outstanding when constructing in work high above the ground and jar.And some welding machine remote control devices exist operation inconvenience and are subjected to self electric arc or contiguous welding machine electric arc interference problem at present.So all do not enter the practicability stage.
The utility model just provides a kind ofly can realize show the actual welding electric current at the electrode holder end, show regulate electric current, regulate the welding machine output current, control welding machine switch, antijamming capability is strong, handling safety is reliable, is connected simple arc welding rectifier remote control with the welding machine mainboard.
This device is under the prerequisite that does not change the original circuit of welding machine, can reliably be easy to regulate the switch of welding current and control welding machine electric power at the electrode holder end, demonstrate the actual welding electric current and regulate electric current, regulate welding current, can also make by changing control voltage to reach the welding machine of regulating welding current and all have distant control function, and be better than other remote control at present.Its key is to have overcome the transfer of data difficulty, and poor anti jamming capability uses inconvenience to be connected technical barriers such as complexity with electric welding machine, has promptly improved welding quality, has reduced working strength of workers again.Simultaneously because of it has time-delay autostop and remote power switch ability, so have energy-conservation and effect that increase the service life.
The utility model comprises Remote Control Indicator, receives mainboard, arc welding rectifier master control borad, it is characterized in that: receive mainboard (13) and be contained in the welding machine (14), one end of line (12) is connected with welding machine master control borad, reception mainboard, the other end of line (12) is connected with electrode holder (10), and electrode holder (10) can contact increasing/opening electrode (1) or subtracting/close electrode (7) on the Remote Control Indicator (6).Remote Control Indicator (6) is connected to five magnetic poles (8) that can contact with workpiece (9), also be provided with a function switch (2), a display screen (3), a luminous indicating lamp (4), a vocal hole (5) on the Remote Control Indicator (6), described device also is provided with a ground wire (11).Remote Control Indicator comprises in (6): power circuit, transmission circuit, digital combiner circuit and digital display circuit: described power circuit comprises: by D
1-D
6, R
1, the plus-minus identification circuit formed of U12D, by D
7-D
10Rectification circuit, C
1Filter capacitor is by T
1, R
2, DW
1, C
10, C
2The serial regulating circuit of forming is by V
1, V
2, C
13, C
11, D
15, D
16, C
12, C
14, C
3, C
4, D
11The secondary mu balanced circuit of forming is by U
6: C, D
12, R
8, T
2, T
5, C
6, D
13, D
14, C
5, C
17, D
17, V
3, C
18, C
7The negative supply generative circuit of forming is by L
1, L
2The signal isolation circuit of forming; Described transmission circuit comprises: by C
23, C
8, C
25, B
2, B
1, C
24The transmitting-receiving loop of forming is by L
4, C
26, C
27, R
15, R
16, R
17, C
28, C
29, C
35, B
3The received signal amplifying circuit of forming is by R
19, R
20, W
1, W
2, U
3, R
21, C
33, R
22, R
23, C
34, R
24, R
25, U
11: B, R
26, D
18, R
27The received signal of forming is primary circuit also, by K switch, R
4, R
5, R
6, C
16, U
1, R
3, U
12, C
15, U
4: password, data generative circuit that E forms, by U
2, R
14, C
19, R
9, R
10, W
3, W
4The FM circuit of forming is by T
4, R
11, L
3, C
21, C
20, R
12, R
13, C
22The signal sending circuit of forming; Described digital combiner circuit comprises: by U
8, U
7, R
33, C
39, R
32, C
38, R
34, C
40, R
30, C
36, the data formed primary circuit also, by U
10, U
5: B, R
47, C
48, R
48, W
6The D/A switch circuit of forming is by U
12: A.B.C.D, C
49, C
50, C
51, U
4: the demonstration signal isolation circuit that D forms, by U
6: D, R
36, C
42, U
6: B, R
37, R
43, T
6, T
7, R
46The index signal of forming forms circuit, by D
21, C
43, U
6: A, W
5, C
44, R
38, T
8, T
9, C
47The voice signal of forming forms circuit, by U
9, R
35, C
41, C
37, R
31, U
4: C, U
5: A, R
39, R
40, R
41, C
45, D
22, R
42, C
46, U
6: F, D
24, D
25, R
44, T
10, R
45The display control circuit of forming; Described digital display circuit comprises: the display circuit of being made up of CC7106 (or CC7107) etc.The reception mainboard of described remote control comprises: transmission circuit, actual current sensing take a sample freezing circuit, far away/the automatic follow circuit of nearly control control voltage, remote control welding current regulating circuit, coding decoding circuit, welding machine switch and control voltage combiner circuit, data sending controling circuit, power circuit and the holding circuit of line voltage sensing circuit, energy-saving circuit, remote control welding current: described transmission circuit comprises: by B
1, B
3, C
103, C
104Deng the transmitting-receiving loop of forming, by T
101, T
102, B
2Deng the amplifying circuit of forming, by U
1, U
3: the sign indicating number shape that A etc. form is primary circuit also, by U
2, U
3: B, U
6: the FM circuit that D etc. form; The described actual current sensing freezing circuit of taking a sample comprises: by U
45: the electric current that A.B.C.D etc. form amplifies zeroing circuit, by U
48: A, U
10: C, U
46: A.B.C.D, U
43: D, U
43: the sampling control circuit that B etc. form, by U
42In the freezing circuit of forming of electric current; The automatic follow circuit of described far/closely control control voltage comprises: by U
21: A.B, U
19: the voltage comparator circuit that C.D etc. form, by U
20: A.B.C.D, U
23: A, by U
16: D, U
19: A.B, U
6: the plus-minus conversion control circuit that A etc. form, by U
15: B.C, U
16: control circuit is followed in the start first time of compositions such as A automatically; Described remote control welding current regulating circuit comprises: by U
26: C, U
25, the controllable oscillatory circuit formed such as A.B, by U
27, U
28The counting circuit of forming is by U
22: A, U
24: A.B, U
16: 8, U
18: A, U
26: the overflow detection circuit that B etc. form, U
17: D, U
18: D, U
16: C, U
13: A, U
15: D, U
18: C, U
22: D, U
18: the current regulation control circuit that B etc. form; The decoding circuit of described coding, the on-off circuit of welding machine, line voltage sensing circuit and energy-saving circuit are comprised: by U
4, U
5: D, U
8: D, U
17: C, U
8: the decoding circuit that B etc. form, by U
6: C, U
5: A.B.D, U
7: A.B, T
501, J
1Deng the switching on and shutting down executive circuit of forming, by U
48: C, U
48: D, U
47: B.C etc. form the line electric voltage observation circuit, by T
502, R
516The short-circuit protection circuit of forming is by U
47: A, C
502, R
514, T
503, J
2, D
504Deng the time-delay automatic shutdown circuitry of forming; The control voltage combiner circuit of described remote control welding current comprises: by U
39: A, U
39: C, U
39: the voltage follower circuit that D etc. form, by U
38: the subtracter that A etc. form, by U
39: the phase inverter that B etc. form, by U
36, U
37, U
38: B, U
38: C, U
22: the D/A switch circuit that C etc. form, by U
38: the adder that D etc. form; Described data sending controling circuit comprises: by U
32: B, U
12: C and D
701, R
705, C
702The synchronous count pulse of the transmission of forming forms circuit, by U
15: A, U
17: A, U
9: A, U
9: C, U
10: D and U
10: B forms the permission sending controling circuit that waits composition, U
34, U
35, U
40, U
41, U
43: A, U
43: the data transmission circuit that C etc. form, by U
33: four of compositions such as A select a circuit, by U
9: B, U
10: four of A composition selects a control circuit, by U
29: A.B, U
32: A.C.D, U
31, U
26: the transmission address control circuit that D etc. form, by U
30, R
701, R
702, C
701The sign indicating number of forming forms circuit, and described power circuit and holding circuit comprise: by D
807-
814The rectification circuit of forming is by V
801, V
802, V
803Deng the mu balanced circuit of forming, by D
816, D
817, D
801, D
802, D
803, R
809, R
808, J
3-1, R
810, R
811, U
50-1, U
50-2, U
47: E, U
49: D, J
3Deng the current foldback circuit of forming, by U
8: C, U
11Deng the overheating protection circuit of forming, by U
48: B, U
47: D, U
49: B.C, U
47: F etc. form line voltage control circuit.
Further narrate the utility model below in conjunction with accompanying drawing in the mode of embodiment.
Accompanying drawing 1 is the accompanying drawing under the utility model duty.Wherein, label 1 is for increasing/open electrode, and 2 is function switch, and 3 is display screen, and 4 is luminous indicating lamp, 5 is vocal hole, and 6 is Remote Control Indicator, and 7 for subtracting/close electrode, and 8 is magnetic pole, and 9 is workpiece, 10 is electrode holder, and 11 is ground wire, and 12 is line, and 13 for receiving mainboard, and 14 is arc welding rectifier.
Accompanying drawing 2 is the Remote Control Indicator power circuit.
Accompanying drawing 3 is the Remote Control Indicator transmission circuit.
Accompanying drawing 5 is the Remote Control Indicator digital display circuit.
Accompanying drawing 6 receives the mainboard transmission circuit for remote control.
Accompanying drawing 7 receives the mainboard actual current sensing freezing circuit of taking a sample for remote control.
Accompanying drawing 8 receives far/closely automatic follow circuit of control control voltage of mainboard for remote control.
Accompanying drawing 9 receives mainboard remote control welding current regulating circuit for remote control.
Accompanying drawing 10 receive for remote control the mainboard coding decoding circuit, welding machine switch and line voltage sensing circuit, energy-saving circuit.
Accompanying drawing 12 receives mainboard data sending controling circuit for remote control.
Accompanying drawing 13 receives motherboard power supply circuit and holding circuit for remote control.
Launch to be described in detail the utility model below.This device has two parts, wherein:
One, Remote Control Indicator
The Remote Control Indicator external form is the cube of 120 * 180 * 40 (length * wide * height), the bottom surface is provided with five magnetic poles, end face is provided with two and regulates electrode (increase/open, subtract/close), a display screen, a function switch, a luminous indicating lamp, a vocal hole, inside does not need power supply, whole Remote Control Indicator adopts the epoxy resin embedding, so need not safeguarded.
Operation principle:
The Remote Control Indicator internal circuit comprises four parts: power circuit, transmission circuit, digital combiner circuit and digital display circuit.
1. power circuit: circuit is seen accompanying drawing 2
The major function of power circuit: will carry out rectification, voltage stabilizing to the voltage that fluctuates on the line, become stable+18V ,+12V ,+5V and-the 5V DC voltage, for Remote Control Indicator 6 (hereinafter to be referred as remote controller) provides various working powers.Realize electrode holder contact increasing/open electrode 1 simultaneously and subtract/when closing electrode 7, remote controller sends corresponding operation coding.When remote controller is worked, will be added to the voltage between line and the ground wire respectively increase/open electrode 1 or subtract/pass electrode 7 and GND between.Increase when line is touched/when opening electrode 1, the voltage on the electrode holder line is through L
1, L
2Be added to D
7--D
10The full bridge rectifier of forming becomes DC voltage (just making the VD when welding machine is just connecing or remote controller can both obtain identical polar during reversal connection like this), through C
1Filtering, become level and smooth DC voltage, be added to by DW then
1, R
2, T
1, C
10And C
2The mu balanced circuit of forming is stabilized in the voltage of pulsing+18V, uses for other circuit.By D
16, C
13, V
1, C
14And C
3Form+the 12V mu balanced circuit is as the working power of remote controller; By C
11, D
15, V
2, C
12And C
4Form+the 5V mu balanced circuit is as the working power of remote controller displays circuit.Diode D
11Be clamp diode, prevent+that 5V power supply ratio+12V power supply is set up is morning.Line is added to subtract/during the electrode 7 of pass, no matter welding machine is forward connection or reverse connection, electric current all will flow through D
3--D
5The bridge circuit of forming, and at D that its DC terminal connected
1, D
2Voltage about last formation 1.4V, this voltage is through R
1Flow through photoelectrical coupler U after the current limliting
120The internal illumination pipe.The triode conducting of photoelectrical coupler inside is controlled other circuit and is finished the conversion that adds/reduce personnel sign indicating number.Simultaneously, line voltage also through L
1, L
2Be added to D
7--D
10The rectification circuit of forming, to increase/open electrode 1 the same with receiving, and forms stable each circuit working of voltage confession.L
1, L
2And C
9Form filter network, prevent to send the loop and be coupled to the high-frequency signal between line and the ground wire by the influence of power supply short circuit and high-frequency signal to power supply.After remote controller powered up ,+12V set up, and encoder MC145026 work is 1: 1 square-wave signal by its vibration end 13 pin output 1.9KHZ amplitude for the close ratio that accounts for of+12V.When 13 pin of MC145026 are output as when high, through R
7, D
12Make T
2Conducting ,+18V power supply passes through T
2, D
13To C
6Charging.Because T
2Be operated in and penetrate with state C
6On voltage be up to about 10V T
5End; When 13 pin of MC145026 when low, T
5Conducting, T
2End C
6Pass through T
5, D
14To C
5Charging, the charging result makes C
5On set up voltage about 10V, polarity be last negative down just.This voltage is through C
17, D
17, C
16, V
3And C
7The mu balanced circuit of forming becomes stable-5V voltage, for related circuit work.When line contact is subtracted/during the electrode 7 of pass, C
30For high-frequency signal provides path.
2. transmitting-receiving loop: circuit is seen accompanying drawing 3
A. receiving loop:
Receiving mainboard sends and is subjected to code modulated high-frequency signal (sent out 300KHZ, send out 280KHZ) through line and ground wire are coupled to remote controller, through C at 1 o'clock at 0 o'clock
24, B
1Elementary and C
23(annotate: when the line contact is subtracted/during the electrode 7 of pass, high frequency channel comprises C
30), be added to B
2Elementary and C
2, C
25On the resonant tank of forming, resonant frequency is 290KHZ.280KHZ that is sent by the master control borad timesharing and the signal of 300KHZ through this resonant tank frequency-selecting, are coupled to the secondary of B2, through L
4, C
26, C
87Be added to by R
15, R
16, R
17, C
28, R
18, B
3, C
29, C
35And T
3The LC selective frequency amplifier circuit of forming carries out frequency-selecting and amplifies.R
18Be used for the frequency band of broadening LC frequency-selective circuit, prevent self-excitation.L
4, C
26Form LC wave arrestment network, be used to block the high-frequency signal that remote controller sends to master control borad, reduce the sidetone influence.The 280KHZ, the 300KHZ signal that sent with time-sharing format by coded modulation by master control borad through the two poles of the earth frequency-selecting has been amplified are coupled to B
3Secondary, through C
32Deliver to phaselocked loop U
3In.Phase-locked loop operation is in phase-locked working method, phase locking range 280KHZ～300KHZ.When input signal was 280KHZ, phaselocked loop was gone into lock, and the voltage about fm demodulation end 10 pin output 2.8V is through R
13Send into by R
24, R
25, R
26, D
18, R
27And U
11: the comparator that A forms with Schmidt's characteristic.Because U
11: the input voltage of 3 pin of A is 6V, so U
11: 1 pin of A is output as height.When input signal was 300KHZ, phaselocked loop was gone into lock, the voltage about fm demodulation end 10 pin output 8V, U
11: 1 pin of A is output as low and because R
26, D
18Effect, U
11: 3 pin of A drop to about 4V, have improved anti-interference.Because 280KHZ and 300KHZ alternately occur in the mode of encoding, so at U
11: 1 pin of A demodulates and master control borad encoder U
30The identical coding of output of 15 pin.
B. send the loop:
After+12V sets up, encoder U
1(MC145026) starting of oscillation is drawn oscillator signal by 13 pin, goes-5V power supply formation circuit.R
6, C
16And R
5Be U
1Timing element, it is determining U
1Operating frequency.U
1Geocoding A/D-1, A/D-2, A/D-3, A/D-4, A/D-5 be respectively unsettled, unsettled, positive supply,, positive supply.A/D-6 is the sign position, and numeric type remote controller A/D-6 connects positive supply, popular remote controller A/D-6 ground connection.A/D-7, A/D-8, the different connections of A/D-9 determine this content of operation following (annotate: A/D-8, A/D-9 are connected together):
| Function | A/D--8 | A/D--9 | A/D--7 |
| Open welding machine | 1 | 1 | 1 |
| Close welding machine | 1 | 1 | 0 |
| Welding current increases | 0 | 0 | 1 |
| Welding current reduces | 0 | 0 | 0 |
By U
1The code signal of 15 pin serials output through U
4: after E is anti-phase, through R
14Be added to U
2Voltage-controlled end 9 pin of phaselocked loop, this phase-locked loop operation is at voltage-controlled state.When 9 pin voltages are 12V, voltage-controlled output 4 pin output 200KHZ high-frequency signal; When 9 pin voltages are 0V, voltage-controlled output 4 pin output 180KHZ high-frequency signal, C
19, R
9, R
10, W
3And W
4The scope of decision voltage controlled oscillator output frequency.By 4 heels according to the 180KHZ of coding timesharing output, the high-frequency signal of 200KHZ, through R
11, L
3, C
20And C
21Carry out square wave/sinusoidal wave conversion, at C
21, C
20Two ends form the sinusoidal signal of 180KHZ or 200KHZ, pass through R
12Send into T
4, R
13The emitter follower of forming carries out electric current and amplifies, through C
22Be coupled to B
1Elementary, again through B
1Secondary, C
24, C
23, C
2, C
25, B
2, line and ground wire, be coupled on the master control borad in the electric welding machine and finish the transmission task.
3. digital combiner circuit: circuit is seen accompanying drawing 4
By comparator U
11: the coded pulse of the 1 pin output of A, send into U simultaneously
7, U
8, U
9Decipher, when the address code of input coding with decoder U
8Address code is identical, and double when correct, and the low tetrad data of the data of being sent by master control borad just are latched to U
8Data output end.While U
8The successfully decoded indication end of 11 pin output high level.When the address code of input coding with decoder U
7Address code identical, and double when correct, the high tetrad data of the data of being sent by master control borad just are latched to U
7Data output end.While U
7The successfully decoded indication end of 11 pin be output as high level.So just, divide two parts to be sent to remote controller and to be latched into decoder U 8 binary codes representing welding current regulated value or actual welding current value
7, U
8Data output end.These 8 binary codes are at U
711 pin enter D/A converter U when being high
10U
711 pin when being low level data be latched in the D/A converter.By U
5: the new D/A changing voltage of output 1 pin output of A.This voltage is by R
47And C
48Filtering is through R
48, W
6Send into UP5135A type display unit after the adjustment.Work as U
7Or U
811 pin when being high level, U
4: 12 pin of F are input as high level, U
4: B is output as low level, because D
21Be in instead partially, by W
5, C
43With phase inverter U
4: the oscillator starting of oscillation that A forms, oscillator signal is through C
44, R
38Send into T
8And T
9After the amplification, promote piezoelectric speaker HDT sounding.Simultaneously because U
4: 12 pin of F are low, through R
43Make T
7End, the double color luminotron green light extinguishes, phase inverter U
4: 4 pin of B are output as height, through R
37Make T
6Conducting, the double color luminotron red light is lighted.C
42And R
36Constitute the delay time long number, make the indication of sound and light discontinuous when preventing the address code conversion.Work as U
7And U
811 pin all be low level, R
36, C
42Time-lag action when finishing, U
4: F output 12 pin are output as height, through R
43Make T
7Conducting, the green light of double color luminotron is lighted; U
4: 4 pin of B are output as low level, T
6End, red light extinguishes, and because D
21Positively biased, U
4: the input of A is clamped to 0.7V, and the blocking of oscillator is not sounded.Work as U
4: output 4 pin of B are output as when high, C
45On voltage be about 11V because U
5: the 6 pin input voltages of B are about 1V, U
5: 7 pin of B are output as height, D
23End C
46Passed through R by power supply
42Charge to supply voltage, U
4: C is output as low level, D
24End, because T
10Base current is arranged, T
10Conducting ,+5V power supply is through T
10, R
45Be added on the common anode of bubble head charactron digital the demonstration; Work as U
4: when 4 pin of B are low, C
45Pass through R
39C is worked as in discharge
45When last voltage is lower than 1V, U
5: 7 pin of B are output as low, C
46On voltage be clamped to 0.7V, U
4: C is output as height, R
44Both end voltage is+12V D
25And T
10All partially anti-.T
10End, the bubble head charactron does not have+5V voltage, and demonstration is extinguished.As the same U of the address code of input coding
9Address code is identical, and during continuously correct secondary, U
9Successfully decoded indication end 11 pin be high, send into comparator U
11: B, U
11: B is output as low, U
4: C is output as height, T
10End, bubble head does not show.The geocoding of decoder is as follows in the remote controller: the low four bit address sign indicating numbers of data: the high four bit address sign indicating numbers of 00011 data: 00000 shutdown indication address codes: 00111
4. display circuit: display circuit adopts finished product UP5135A as display unit.Interconnector is seen accompanying drawing 5
Two. receive mainboard
Receive mainboard and be installed in the welding machine, have only several control lines to link to each other, to realize the straighforward operation of butt welding machine with the welding machine governor circuit.
Operation principle:
The reception mainboard comprises: transmission circuit, actual current sensing take a sample freezing circuit, far away/the automatic follow circuit of nearly control control voltage, remote control welding current regulating circuit, coding decoding circuit, welding machine switch and control voltage combiner circuit, data sending controling circuit, power circuit and the holding circuit of line voltage sensing circuit, remote control welding current.
1. transmission circuit: circuit is seen accompanying drawing 6
The major function of this circuit is to receive to send high-frequency signal through the number modulation from remote controller through the high-frequency signal of number modulation with to remote controller.
(1). receiving unit:
Through what the coupling of line and ground wire was come, remote controller send through the 180KHZ of number modulation and the high-frequency signal of 200KHZ, pass through C
103, C
104, B
3, enter B
1And C
105, C
102And C
101Carry out frequency-selecting in the frequency-selective circuit of forming.This loop resonance is at 190KHZ.180KHZ that frequency-selecting is come out or the high-frequency signal of 200KHZ are through B
1Secondary, L
103, C
121, C
106Be coupled to by R
102, R
104, R
103, R
105, C
119, C
109, C
108, B
2, C
107And T
101The selective frequency amplifier circuit of forming.L
103, C
21Constitute the wave arrestment network, be used to block the high-frequency signal that master control borad sends to remote controller, reduce the sidetone influence.Signal after frequency-selecting is amplified is by B
2Secondary output, pass through C
110Be coupled to phaselocked loop U
1In.Phase-locked loop operation is in the demodulation of phase locking mode, and its phase-locked frequency band is 180KHZ～200KHZ.Adjust W
102And W
106Can change the phase-locked high frequency points and the low frequency of phaselocked loop.When input signal was 180KHZ, phaselocked loop was gone into lock, and the voltage about its demodulation output 10 pin output 2.8V is through R
110, C
113Send into by R after the filtering
113, R
112, R
111, D
101, R
114And U
3: the comparator that A forms with Schmidt's characteristic, and this moment U
3: the 3 pin input voltages of A are 6V, U
3: A is output as height.When input signal was 200KHZ, phaselocked loop was gone into lock, the voltage about its demodulation output output 8V, and this voltage is also sent into comparator, and this moment is because the input of 2 pin is higher than 3 pin, comparator U
3: A is output as low.At U
3: A is output as low moment, because R
113And D
101Effect, U
3: the voltage of 3 pin of A becomes 4V, has increased anti-interference like this.When 180KHZ and 200KHZ signal alternately occur, just at U
3: the numeric data code that the output output height of A replaces.In the inside of remote controller, because U
4: the effect of D, as encoder U
115 pin be output as and send the 200KHZ signal when low.At the inner 200KHZ of governor circuit through U
1Phase-locked, U
3: the A comparator is output as low.The remote controller inner encoder is output as when high, U
3: A output also is high, so U
3: the data of A output all are the encoder U of remote controller inside
1The coding of output, this content encoded is determining the content of this operation.
(2). send part:
Coded data by the data sending controling circuit is through U
6: after D is anti-phase, through R
101Send into phaselocked loop U
2Phase-locked loop operation is at voltage-controlled state, and voltage-controlled scope 280KHZ～300KHZ adjusts W
103And W
104Can change this two frequency values.When voltage-controlled end 9 pin are imported high voltage, the high-frequency square-wave signal of voltage-controlled output output 300KHZ; During the input low-voltage, the high-frequency square-wave signal of voltage-controlled output output 280KHZ.Because U
6: what D imported is coded data, so at the digital high-frequency signal of modulating of voltage-controlled output output quilt, through R
117, L
102, C
115And C
116After carrying out square wave/sinusoidal wave conversion, send into R
116, R
115And T
102The emitter follower of forming carries out electric current and amplifies, through C
118And C
114Be coupled to transformer B
3, through B
3Secondary, C
103, C
104, B
1Former limit and ground wire, line is coupled to the receiving loop of remote controller.R
120, R
121, R
122And U
3: B forms phase inverter, have only master control borad to receive the correct coding that remote controller sends after, just allow voltage controlled oscillator work.C
120Be anti-interference capacitor.
2. the actual current sensing freezing circuit of taking a sample: circuit is seen accompanying drawing 7
(1). the actual current sensing circuit:
By the weak voltage signal that is proportional to welding current that the current divider sensing is come, send into U respectively
45: B and U
45: two anti-phase low-frequency voltage amplifiers that A and respective element are formed.By U
45: the voltage signal after amplifying of B output is sent into zeroing phase inverter U
45: C returns to zero and paraphase, with U
45: the signal of A output is sent into subtracter U together
45: D.At U
45: the output output of D is proportional to the voltage signal of actual current, and this voltage is through W
202Adjustment, through R
224, analog switch door U
43: B, send into the voltage input end U of A/D converter
426 pin.D
207And D
206Be protecting network, make the voltage that is input to A/D converter in the scope of-0.5～5.5V.C
205Be filter capacitor, be used for the fluctuation part of filtering welding current.W
201Be zero potentiometer, adjust W
201Make U when not carrying out welding
45: output 14 pin of D are 0V.
(2). the sampling of actual current, freezing circuit:
By U
45: the voltage signal that is proportional to the actual welding electric current of D output, send into comparator U
48: 7 pin of A, simultaneously through D
201And R
216Ground connection.Because diode D
201Clamping action, at R
214And R
215Tie point voltage ratio U
45: about the low 0.2～0.3V of D output voltage, this voltage is through resistance R
213And C
201Filtering after send into voltage comparator U
48: 6 pin of A.During as the actual welding electric current and greater than certain value, voltage comparator U
48: A is output as height.In the moment that stops arc, because C
201On voltage can not suddenly change, so under the situation about welding current is than original value decline 30A, comparator is output as low immediately, guarantee the correctness of actual current sample point.When not welding, U
45: D is output as zero, D
202The voltage at two ends is through R
212And R
214, R
215, R
216After carrying out dividing potential drop, pass through R
213Send into 6 pin of comparator, guarantee that the output of comparator is low.As comparator U
48: A is output as when high, U
10: C is output as low, U
46: B is output as height, U
46: A is output as low.Because C at this moment
203On be filled with 9V left and right sides voltage, U
46: C exports high, analog switch U
43: B opens, and the voltage that is proportional to the actual welding electric current is to C
205Charging.While C
203On voltage through resistance R
220C is worked as in discharge
203On voltage when discharging into certain value, U
46: A is output as height, U
46: C is output as low, analog switch U
43: B disconnects, U
46: D is output as height, analog switch U
43: D connects, and carries out the A/D conversion.Because U
46: C is output as low, so U
46: B is guaranteed finishing of this time A/D conversion by self-locking.U
46: after A is output as height, C
203Pass through R
221And D
203Be recharged again, when voltage is charged to certain value, U
46: A is output as low again, analog switch U
43: B connects, analog switch U
47: D disconnects, and carries out new once getting and has freezed last actual welding electric current.Go round and begin again, after stopping welding, comparator U
48: A is output as low, U
10: C is output as height, U
46: B is output as low, U
46: A is output as height, and because R
222And D
204Effect, C
203On voltage be about 9V.R
225Effect be analog switch U
43: when D opens, guarantee that 3 pin of A/D converter are electronegative potential.R
226, C
206Timing element for the A/D converter internal clocking.
3. far away/as closely to control the automatic follow circuit of control voltage of welding current: circuit is seen accompanying drawing 8
The control voltage of remote control welding current is added to comparator U
11: 3 pin of A and comparator U
21: 6 pin of B, the control voltage of closely controlling welding current is added to comparator U
21: 2 pin of A and comparator U
21: 5 pin of B, carry out the comparison of two control voltages.When controlling the voltage transitions mode switch near control, U
20: 6 pin of B are high potential, U
20: B is output as height, U
19: C and U
19: D is opened, and the comparative result of two voltages is through U
19: C and U
19: D, U
20: D, U
20: C sends into U
23: A, the plus-minus conversion of counting.During control voltage when the control voltage of nearly control is higher than remote control; U
21: B is output as height, by resistance R
302, C
303After the filtering, through D
307Deliver to U
19: D.Because U
19: 13 pin of D are high at this moment, so U
19: D is output as height, U
20: D is output as height, U
23: A is set and is output as height, and counter is set to and adds counting mode.Simultaneously, because U
19: D is output as height, U
20: A is output as height, through resistance R
303, C
304After the anti-dried sorrow, the pulse of starting high-speed counting is counted, and remote control control magnitude of voltage is increased, when two voltages are identical, and U
19: C, U
19: D output all is low, U
20: A is output as low, and count pulse stops.When nearly control control voltage is controlled voltage less than remote control, U
21: A is output as height; U
19: C is output as height, U
20: C is output as height, U
23: A is reset, and counter is changed to and subtracts counting mode.Simultaneously, U
20: A is output as height, through R
303, C
304After anti-interference, starting high-speed counting clock subtracts counting, and remote control control voltage is descended, and when equating with nearly control control voltage, stops count pulse.When controlling the voltage system change-over switch in remote control, U
20: 6 pin of B input are low, U
20: B is output as low, U
16: D is output as height, U
19: B, U
19: the A door is opened, door U
19: C, U
19: D is closed, U
19: B, U
19: the output of A is through U
20: C, U
20: D set or reset trigger U
23: A makes counter add counting or subtracts counting.The set or the coding that is decided by the remote controller transmission that resets are to increase electric current or minimizing electric current.When electric welding machine started for the first time, electric welding machine master control positive supply was through capacitor C
305, R
304Be input to U
15: B.DW
301Be the protection voltage-stabiliser tube, prevent to be input to U
15: the voltage of B exceeds supply voltage.U
15: B is output as height, U
15: C is output as height, and U
15: C is by R
306, C
306Self-locking.At U
15: C is output as high moment, because capacitor C
307Last voltage can not suddenly change, U
16: input 2 pin of A are low, and 1 pin is high, then U
16: A is output as height, U
20: 5 pin of B are input as height, carry out following automatically of a welding current.Along with C
307Pass through R
309Be recharged U
16: 2 pin of A are high potential, U
16: A gets back to low again, has finished following automatically of start for the first time.At this moment because U
15: the output of C is by self-locking, even shut down or restart, also do not followed.
4. remote control current regulating circuit: circuit is seen accompanying drawing 9
The function of this circuit is the conversion of the increase of distant welding current size shelves when reducing, detecting welding current and whether being adjusted to maximum or minimum, adjusting.Work as U
17: B is output as when high, illustrates that decoder translates correct sign indicating number, is not switching on and shutting down again, and welding machine is in opening, when the remote control of welding current mode change-over switch, and U
17: D is output as height, capacitor C
404Pass through R
401Be recharged, in the process of charging, because C at this moment
404On voltage also be low-voltage, U
10: D is output as low, and U
17: D is output as height, then U
16: C is output as height, and the reception mainboard is the actual welding current value of last welding to the remote controller transmission.Along with C
404On voltage raise U
18: D is output as height, U
16: C is output as low, and what master control borad sent to remote controller is the welding current regulated value, because U at this moment
12: D is output as height, analog switch U
25: A connects, U
15: D is output as height, through resistance R
404, C
401Time-delay after, if this crosses U
26: B is output as height, U
18: C is output as height, U
26: the oscillator starting of oscillation that C forms.At this moment duration of oscillation constant element is R
405, C
402And C
405Because U
12: C is output as when hanging down, U
26: C is output as height, so C
402, C
403And C
406All filled high voltage with.Work as U
18: C is output as when high, U
26: C is output as low, U
22: D is output as height, through R
406, C
403After the time-delay, U
18: B is output as height, and at U
18: when the B output is high, because D
404Effect, U
18: input 5 pin of B are by self-locking, U
22: B is output as low, opens counter U
27, U
28The blockade end, allow counting.Meanwhile, capacitor C
405, C
402Pass through R
405Discharge, when discharging into certain value, U
26: C is output as height, makes the counter increase or reduces one.The plus-minus of counter depends on the coding that remote controller that decoder translates sends, and being increases electric current or minimizing electric current.U
18: after D is output as height, capacitor C
407Pass through R
402Be recharged, when being charged to certain value, at U
26: C is output as when high, U
13: A is output as height, and U
13: the input of A is also by self-locking, and low counter is set, the content of set depend on current add the counting or subtract counting.Simultaneously because U
13: A is output as height, analog switch U
25: B connects, U
26: the time constant element that C forms oscillator is C
405, C
402, C
406And R
405, double cycle of oscillation, only carries out the counting of high-positioned counter, realizes that the big shelves of welding current are regulated.When counter increases or reduces to maximum or hour, counter U
277 pin be output as low, counter U
287 pin be output as low, U
22: A is output as height, at U
22: A is output as high moment, U
24: B is triggered, U
24: 13 pin of B export current two counters add the counting overflow or subtract the counting overflow, if current be add the counting overflow U
24: 13 pin of B are output as height, otherwise are output as low.U
24: 12 pin of B are non-values of 13 pin.U
16: B is output as height.At U
22: A is output as high moment, U
24: A also is triggered, U
24: 1 pin of A is output as height, indicates and overflows, at this moment U
18: A is output as height, U
26: B is output as low, U
18: C is output as low, U
26: the blocking of oscillator that C forms, U
26: C is output as height, and is low if the change of the electric current that remote control is at this moment sent adjusting direction is output as, U
26: B is output as height, U
18: C is output as height, and oscillator starts again and carries out the opposite direction counting.Work as U
26: C is output as when hanging down, U
22: D is output as height, U
24: A is reset, and waits for overflowing next time.When electric current regulative mode switch during near control, U
15: input 12 pin of D are high, U
15: D is output as height, and is identical during with remote control.Because analog switch U at this moment
25: A, U
25: B disconnects, so U
26: the size of control voltage is followed increase and decrease when minimum cycle of oscillation of C, data based current near prosecutor formula in the counter, when the control magnitude of voltage of remote control mode when closely the control magnitude of voltage of prosecutor formula equates, U
15: input 12 pin of D become low, U
26: the blocking of oscillator that C forms, counter stop counting.
The on-off circuit of Bian Ma decoding circuit, welding machine, line voltage sensing circuit and energy-saving circuit: circuit is seen accompanying drawing 10
(1). the decoding circuit of coding, the on-off circuit of welding machine:
U
3: the coded pulse of A output is input to decoder U
4In, when the address bit of position, coded address and decoding is identical, successfully decoded (geocoding of decoder is: empty, empty, high and low, height).11 pin of decoder are output as high voltage, through R
503, D
501, C
506After anti-interference, C
506Last voltage is filled is height, and simultaneously, the data of the representative content of operation that remote controller sends occur and are latched on the data carry-out bit of decoder.The corresponding relation of content of operation and data is as follows:
| Content of operation | D7 | D8 |
| Connect welding machine | 1 | 1 |
| Turn-off welding machine electric power | 0 | 1 |
| Welding | 1 | 0 |
| Welding current reduces | 0 | 0 |
When the encoded content of remote controller transmission is switching on and shutting down, decoder U
4D
8Be output as height.Since successfully decoded, so C
506On voltage be high, U
5: D is output as height, door U
5: A, U
5: B is opened, at this moment if start operation, then decoder U
414 pin be output as height, U
6: C is output as low, U
5: A is output as height, U
7: B is output as low.Because U
7: A and U
7: B is the R-S trigger, so U
7: A is output as height, through R
504Make T
501Conducting, J
1Adhesive, the A.C. contactor of operation electric welding machine main power switch is connected, the welding machine starting.If power-off operation, then decoder U
414 pin be output as low, U
6: C is output as height, U
5: B is output as height, U
7: A is output as low, T
501End J
1Decontrol, the interchange contact of operation electric welding machine main power source discharges, and welding machine turn-offs.Button TQ, TA are manual starting button and stop button.R
509, C
504, C
503And R
505It is anti-interference network.Guarantee that button is input to the R-S electric shock flat when not pressing all be low.C
509Be that original state presets electric capacity, electric welding machine is in off state when guaranteeing to close main power source.When the encoded content of remote controller transmission is not switching on and shutting down, decoder U
413 pin be output as low, U
5: D is output as low, door U
5: A, U
5: B is closed, simultaneously U
8: D is output as height, because decoding is correct, and C
506Go up and to be high voltage, if at this moment welding machine is in opening, U then
7: A is output as height, U
17: C is output as height, U
17: B is output as height, removes to start the welding current regulating circuit.C
501, R
501, R
502And C
502Be decoder U
4Timing element.
(2). line voltage sensing circuit and energy-saving circuit:
The voltage on the line through resistance R
511And R
512After the dividing potential drop, send into comparator U respectively
48: C, U
48: D.C
505It is filter capacitor.DW
501It is the protection voltage-stabiliser tube.When preventing a line overtension through resistance R
511And R
512Partial pressure value surpass the power supply of master control borad.+ 12V power supply is through resistance R
506And R
507After the dividing potential drop, input comparator U
48: 9 pin of C, magnitude of voltage are about 2V.When line voltage is lower than 10V, welding terminal short circuit is described, line voltage through R
511And R
512Partial pressure value be about 1.6V, U
48: C is output as height, and power supply passes through R
513, R
515To C
507Charging.Work as C
507On voltage be charged to when enough high U
47: B output is low, U
47: C is output as height, T
502Conducting is transferred to welding current about 30A automatically, plays the effect of short-circuit protection.After line voltage is raise, U
42: C is output as low, C
507On voltage pass through R
515And U
48: the inside triode of C bleeds off U
47: B is output as height, U
47: C is output as low, T
502End, withdraw from short-circuit protection.+ 12V power supply is through R
507And R
510Dividing potential drop input comparator U
48: 10 pin of D, magnitude of voltage are about 6V.When line voltage is lower than 30V, comparator U
48: D is output as low, C
508On voltage pass through U
48: the inner triode of D bleeds off U immediately
47: A is output as height, through R
507Make T
503Conducting, J
2Adhesive, welding machine is in welded condition.When welding current, U
48: B is output as low, D
504Conducting, C
508On voltage be clamped at about 0.7V T
503Conducting always, J
2Adhesive always; When stopping to weld, U
48: B is output as height, D
504End, owing to stopped welding, the voltage on the line is also raise, again so U
48: D is output as height, and power supply is through resistance R
514To C
502Charging, when being charged to certain voltage (time is about 2～3 minutes), U
47: A is output as low, T
503End J
2Discharge, welding machine enters energy-conservation when touching workpiece, voltage on the line is dropped immediately U
42: D is output as low again, C
502Last voltage is bled off again, and welding machine enters welded condition again.
6. the remote control welding current is controlled the voltage combiner circuit: circuit is seen accompanying drawing 11
The voltage of nearly control welding current regulator potentiometer hot end and cold end is respectively by U
39: A, U
39: after the follower that C forms carries out voltage follow, pass through R
605, R
604Send into by U
38: the subtracter that A forms carries out subtraction.Its value is that the electronegative potential of closely controlling the welding current regulator potentiometer deducts high potential, and the absolute value of this value just in time is an adjustable range of closely controlling time control voltage, and the magnitude of voltage of this negative sense is admitted to D/A converter U
37D/A converter is according to carrying out the D/A conversion by the data of counter input, and changing voltage is from U
38: C output.The voltage of the cold end of this voltage and nearly control welding current regulator potentiometer is sent into together by U
38: the adder that D forms, by U
38: D output remote control control voltage, the adjustable range when this voltage and nearly control is identical, finished remote control voltage synthetic automatically according to the scope of nearly control voltage.The data increase and decrease remote control adjustment voltage of counter is also made corresponding change.For needing the doubly-linked interlock to regulate the electric welding machine of welding current, the hot end of another potentiometer is by U
39: D does voltage follow, and this voltage is through U
39: send into D/A converter U after B is anti-phase
36After changing, pass through U
38: second remote control control of B output voltage because the input data and the control signal of two D/A converters are in parallel, so these two remote control adjustment voltages also regulate synchronously, identical when scope also and is closely controlled.At U
26: C is output as when high, U
22: D is output as low, and the data in the counter enter the first order buffer of D/A converter, work as U
26: C is output as when hanging down, U
22: D is output as height, and the data of first order buffer enter the second level and are latched into carries out new D/A conversion in the buffer of the second level.C
601, R
401, D
601Effect, be the moment of closing at power supply, the content of first order buffer is pushed second level buffer.
7. digital sending controling circuit: circuit is seen accompanying drawing 12
The major function of this circuit is the differentiation of numeric type remote controller and popular remote controller, and the data coding that sends to remote controller sends number of times and Synchronization Control, sends the actual welding current value and regulates the selection of welding current value, allows to send control etc.
When the coding maker position that remote controller sends over when being high, illustrate that this remote controller is the numeric type remote controller.After decoder translates correct sign indicating number, C
506Last voltage is high voltage, U
13: D and U
13: C input 12 pin and 9 pin are high, again because flag bit is high, so U
13: D input 13 pin are high, U
12: A is output as low, U
13: C is output as low, U
13: B is output as low, U
14: the output valve of D depends on the data output of encoder.These data are through U
6: enter transtation mission circuit after D is anti-phase, be modulated into corresponding high-frequency signal, send to remote controller and go.Meanwhile, U
13: D is output as height, U
12: D is output as low, U
14: the output of C depends on to allow sending controling circuit whether to allow to send.When the flag bit of decoding output when low, U
13: D is output as low, U
12: A is output as height, at this moment because sign indicating number is correct, and U
13: C is output as height.When allowing transtation mission circuit to allow to send, U
12: B is output as height, U
13: B is output as height.Meanwhile, U
13: D is output as low, U
12: D is output as height, U
14: C is output as height, encoder U
30Quit work, data output end 15 pin are low, and the transmission pulse that allows transtation mission circuit to produce directly enters the modulator of transtation mission circuit, send the successful voice signal of indication operation to popular remote controller.When flag bit is high, allow transtation mission circuit to produce when sending pulse U
14: C is output as low, the encoder starting.U
32: B, U
12: C and D
701, R
705, C
708Form and send synchronous count pulse, send into counter U
31, earlier send out low the four figures certificate, sends three times after, counter is reset, and sends high four figures certificate again, sends out low four figures certificate again after sending three times, goes round and begins again, up to permission transmission pulse disappearance, encoder just quits work.Behind count pulse meter to three time, counter U
317 pin be output as height.At U
317 pin be output as high moment, U
29: B is triggered, and its output is the non-value before triggering, and this end is admitted to the geocoding end of encoder, has so just realized three groups of complete data of every transmission, and geocoding just changes once.Finished the different geocoding of high four figures certificate and low four figures certificate.For the four figures certificate that guarantees earlier to send out low, at the count pulse of remote control electric current when hanging down, U
26: D is output as height, U
32: C is output as height, U
32: A is output as height, counter U
31Be reset, simultaneously trigger U
29: B set, its output 13 pin are high, and producing low four is the geocoding of data, send low four figures certificate when having guaranteed to begin to send earlier.U
9: the input of B is connected to U respectively
8: the output of B, U
5: the output of D and U
20: the output of B, this three end is respectively: shutdown indication, welding machine electric power operation and nearly control indication.Wherein there is one to be output as when high U
9: B is output as height, U
10: A is output as low.U
10: another input 2 pin of A are connected to U
16: the output of C, this end begins indication for the remote control adjustment welding current, works as U
16: C is output as when high, U
10: A output also is low.At this moment, decoder U
33: A output 4 pin or 5 pin are exported high digit pulse.Who output high level of 4 pin or 5 pin depends on decoder U
33: another input 2 pin of A, this pin is connected to U
29: 12 pin of B, when send low four figures according to the time, U
29: 12 pin of B are output as low, decoder U
33: 4 pin of A are output as height, analog switch U
43: C connects, and is chilled in the low four figures certificate of the actual welding current value in the A/D converter, through level shifter U
41Enter the data bit of encoder, send to remote controller and go.When send high four figures according to the time, U
29: 12 pin of B are output as height, decoder U
33: A goes out to be high level, analog switch U
43: A connects, and is chilled in the high four figures certificate of the actual welding current value in the A/D converter, through level shifter U
40Enter the data bit of encoder, send to remote controller and go.Because U
33: A four selects a decoder, and in office have only an output in a flash for high, so have the level shifter U of ternary output
34, U
35, U
40, U
41Arbitrary moment has only one to be opened, and all outputs of its excess-three level shifter all are in high-impedance state, have finished the transmission of actual current.Work as U
10: A is output as when high, illustrates not send the actual welding current value, regulates current value and send, and process is the same with sending the actual welding current value, and selected level shifter is U
35Or U
34, be high four figures certificate or low four figures certificate according to current transmission, U
35, U
34Be opened respectively, represent the counter U of welding current regulated value
28, U
27Count value enter the data input pin of encoder, realize regulating the transmission of current value, U
33: A decoder input and the data relationship that the sends form that vides infra:
When welding machine is in closed condition, if decoder U at this moment
4Decoding is correct, U
8: A is output as low, U
6: B and R
706, C
703The oscillator starting of oscillation of forming, when sending the lock-out pulse arrival, U
29: A is triggered.If U at this moment
6: B is output as low, and digital sending controling circuit is still sent out the Gao Siwei of actual welding electric current or hanged down four.Work as U
6: B is output as when high, U
29: A output 1 pin is defeated
Go out to be height, U
32: C, U
32: A output all is high, counter U
31Be reset U
32: D also is output as 1, U
29: B is set, and the geocoding 3 pin current potentials of encoder have become height, and at this moment digital sending controling circuit sends electric welding machine shutdown indication to remote controller.The geocoding of encoder is as follows: send the high position data address: 00000 send the low data address: 00011 welding machines cut out the address: 00111
| B | A | Send data |
| 0 | 0 | Low four of actual current |
| 0 | 1 | Actual current is high four |
| 1 | 0 | Regulate low four of electric current |
| 1 | 1 | It is high four to regulate electric current |
Allow sending controling circuit by U
15: A, U
17: A, U
9: A, U
9: C, U
10: D and U
10: B forms.They be connected to respectively the step-by-step counting end of regulating electric current, closely control the indication end, regulate that welding current begins the indication end, the remote control adjustment welding current allows end, remote start(ing) welding machine signal end.When these signals when any one signal is arranged is high, all allow digitally to send U
10: D is output as low, encoder U
30Starting.U
10: D input 12 pin are connected to U
29: 12 pin of B.This is one and, allows to send pulse and stop if in the process that sends from locking wire, stops sending after the high position that also can guarantee data sends three times again, guarantees to send to the correctness of the data of remote controller.
8. power supply and holding circuit: circuit is seen accompanying drawing 13
The 380V power supply becomes four groups of voltages after transformer B1 step-down, one group of interchange 36V exchanges 20V and exchanges 6.3V with one group with two groups, and two groups of 20V voltages are through D
811--D
814After the rectification, again through C
802, C
809DC voltage about filtering generation ± 28V is through three terminal regulator V
801, V
802, V
803Voltage stabilizing, output ± 12V ,+the 5V DC voltage is as the working power that receives mainboard.D
804, D
805, D
806Be protection diode, C
810, C
811, C
812Be output filter capacitor.36V voltage is through D
807--D
810After the rectification, through D
816, D
817And J
3-1 is added to output afterflow inductance front end in the electric welding machine, forms voltage between line and ground wire, as the servo power supply of remote controller work.Capacitor C
818Be line voltage filter electric capacity.U when welding
45: D output is proportional to the voltage of actual welding electric current, through resistance R
803, C
813Input comparator U after the filtering
48: input 4 pin of B.Power supply is through resistance R
801And R
802Produce the voltage about 0.2V after the dividing potential drop, input comparator U
48: B input 5 pin.After welding, when welding current surpasses certain value, comparator U
48: B is output as low, U
47: D is output as height, U
49: B is output as height, U
49: C is output as height, U
47: F is output as low, U
49: D is output as low, T
301By, J
3Decontrol, servo voltage is through resistance R
810, R
811Add electric welding machine.After stopping arc, U
45: D is output as low, comparator U
48: D is output as height, and power supply is through resistance R
804To C
814Charging, when voltage is charged to certain value, U
47: D is output as low, U
49: B is output as low, U
49: C is output as low, U
47: F is output as height, U
49: D exports high, T
801Conducting J
3Adhesive, servo voltage is through J
3Normally opened contact J
3-1 is added between a line and the ground wire.Be in off state at electric welding machine, during line and earth short, D
816, D
817Both end voltage is increased to about 1.4V.This voltage is through resistance R
808After the current limliting, make photoelectrical coupler U
50Interior luminous tube is luminous, the triode conducting of photoelectrical coupler inside, and power supply is through U
50Inner triode, resistance R
812To C
816Charging, U
47: E is output as low, U
49: D is output as low, T
801By, J
3Discharge, servo voltage is through resistance R
810, R
811To line is powered, limited short circuit current.U
49: C input 9 pin are connected to welding machine start indication end, when welding machine cuts out, and U
49: C is output as low, U
47: D is output as height, U
49: D is output as height, T
801Conducting is when guaranteeing that welding machine does not start, the operating voltage that has servo voltage as remote controller on the line.D
801, D
802, D
803It is photoelectrical coupler protection diode.When the temperature protection relay on being installed in main transformer disconnects, the main transformer overtemperature is described, power supply is through R
815To C
808Charging makes the voltage on it increase U
8: C and R
816, C
815The oscillator starting of oscillation of forming, photoelectrical coupler U
11Inner luminous tube is intermittently luminous, the also interrupted conducting of inner light-operated bidirectional triode thyristor, and the control power supply indicator is glittering.While C
808On voltage also be added to U
7: A input 3 pin, U
7: A is output as low, stops welding machine electric power, plays the temperature protection effect.When temperature protection does not disconnect, U
8: C is output as height, photoelectrical coupler U
11Luminous tube Chang Liang, inner bidirectional triode thyristor conducting, power supply indicator Chang Liang.
Prove by actual tests, this device is connected with arc welding rectifier simply, and is easy for installation, can prolong the former arc welding rectifier life-span, can save the energy again, video data accurately, reliably can provide foundation for the welding that high-quality requires, owing to adopted the timesharing of annular transmit-receive technology, current value Refrigeration Technique, data to send technology such as receiving assembling, cause stability and anti-interference to be better than any arc welding rectifier remote control in the application now, and it is simple to operate, convenient, reliable.
Claims (9)
1. the device of an arc welding rectifier remote control, the utility model comprises Remote Control Indicator, receive mainboard, the arc welding rectifier master control borad, it is characterized in that: receive mainboard (13) and be contained in the arc welding rectifier (14), an end of line (12) and arc welding rectifier master control borad, the reception mainboard connects, the other end of line (12) is connected with electrode holder (10), electrode holder (10) can contact increasing/opening electrode (1) or subtracting/close electrode (7) on the Remote Control Indicator (6), Remote Control Indicator (6) is connected to five magnetic poles (8) that can contact with workpiece (9), also be provided with a function switch (2) on the Remote Control Indicator (6), a display screen (3), a luminous indicating lamp (4), a vocal hole (5), described device also is provided with a ground wire (11), and Remote Control Indicator comprises in (6): power circuit, transmission circuit, digital combiner circuit and digital display circuit: described power circuit comprises: by D
1-D
6, R
1, the plus-minus identification circuit formed of U12D, by D
7-D
10Rectification circuit, C
1Filter capacitor is by T
1, R
2, DW
1, C
10, C
2The serial regulating circuit of forming is by V
1, V
2, C
13, C
11, D
15, D
16, C
12, C
14, C
3, C
4, D
11The secondary mu balanced circuit of forming is by U
6: C, D
12, R
8, T
2, T
5, C
6, D
13, D
14, C
5, C
17, D
17, V
3, C
18, C
7The negative supply generative circuit of forming is by L
1, L
2The signal isolation circuit of forming; Described transmission circuit comprises: by C
23, C
8, C
25, B
2, B
1, C
24The transmitting-receiving loop of forming is by L
4, C
26, C
27, R
15, R
16, R
17, C
28, C
29, C
35, B
3The received signal amplifying circuit of forming is by R
19, R
20, W
1, W
2, U
3, R
21, C
33, R
22, R
23, C
34, R
24, R
25, U
11: B, R
26, D
18, R
27The received signal of forming is primary circuit also, by K switch, R
4, R
5, R
6, C
16, U
1, R
3, U
12, C
15, U
4: password, data generative circuit that E forms, by U
2, R
14, C
19, R
9, R
10, W
3, W
4The FM circuit of forming is by T
4, R
11, L
3, C
21, C
20, R
12, R
13, C
22The signal sending circuit of forming; Described digital combiner circuit comprises: by U
8, U
7, R
33, C
39, R
32, C
36, R
34, C
40, R
30, C
36, the data formed primary circuit also, by U
18, U
5: B, R
47, C
48, R
48, W
6The D/A switch circuit of forming is by U
12: A.B.C.D, C
49, C
50, C
51, U
4: the demonstration signal isolation circuit that D forms, by U
6: D, R
36, C
42, U
6: B, R
37, R
43, T
6, T
7, R
46The index signal of forming forms circuit, by D
21, C
43, U
6: A, W
5, C
44, R
38, T
8, T
9, C
47The voice signal of forming forms circuit, by U
9, R
35, C
41, C
37, R
31, U
4: C, U
5: A, R
39, R
48, R
41, C
45, D
22, R
42, C
46, U
6: F, D
24, D
25, R
44, T
10, R
45The display control circuit of forming; Described digital display circuit comprises: by the display circuit that CC7106 (or CC7107) etc. forms, the reception mainboard of described remote control comprises: transmission circuit, actual current sensing take a sample freezing circuit, far away/the automatic follow circuit of nearly control control voltage, remote control welding current regulating circuit, coding decoding circuit, welding machine switch and control voltage combiner circuit, data sending controling circuit, power circuit and the holding circuit of line voltage sensing circuit, energy-saving circuit, remote control welding current.
2. device according to claim 1 is characterized in that: described transmission circuit comprises by B
1, B
3, C
103, C
104Deng the transmitting-receiving loop of forming, by T
101, T
102, B
2Deng the amplifying circuit of forming, by U
1, U
3: the sign indicating number shape that A etc. form is primary circuit also, by U
2, U
3: B, U
6: the FM circuit that D etc. form.
3. device according to claim 1 is characterized in that: the described actual current sensing freezing circuit of taking a sample comprises by U
45: the electric current that A.B.C.D etc. form amplifies zeroing circuit, by U
43: A, U
18: C, U
46: A.B.C.D, U
43: D, U
43: the sampling control circuit that B etc. form, by U
42In the freezing circuit of forming of electric current.
4. device according to claim 1 is characterized in that: the automatic follow circuit of described far/closely control control voltage comprises by U
21: A.B, U
19: the voltage comparator circuit that C.D etc. form, by U
23: A.B.C.D, U
23: A, by U
16: D, U
19: A.B, U
6: the plus-minus conversion control circuit that A etc. form, by U
15: B.C, U
16: control circuit is followed in the start first time of compositions such as A automatically.
5. device according to claim 1 is characterized in that: described remote control welding current regulating circuit comprises by U
26: C, U
25: the controllable oscillatory circuit that A.B etc. form, by U
27, U
28The counting circuit of forming is by U
22: A, U
24: A.B, U
16: B, U
18: A, U
26: the overflow detection circuit that B etc. form, U
17: D, U
18: D, U
16: C, U
13: A, U
15: D, U
18: C, U
22: D, U
18: the current regulation control circuit that B etc. form.
6. device according to claim 1 is characterized in that: the decoding circuit of described coding, the on-off circuit of welding machine, line voltage sensing circuit and energy-saving circuit are comprised by U
4, U
5: D, U
8: D, U
17: C, U
8: the decoding circuit that B etc. form, by U
6: C, U
5: A.B.D, U
7: A.B, T
501, J
1Deng the switching on and shutting down executive circuit of forming, by U
46: C, U
48: D, U
47: B.C etc. form the line electric voltage observation circuit, by T
501, R
516The short-circuit protection circuit of forming is by U
47: A, C
501, R
514, T
503, J
8, D
504Deng the time-delay automatic shutdown circuitry of forming.
7. device according to claim 1 is characterized in that: the control voltage combiner circuit of described remote control welding current comprises by U
39: A, U
39: C, U
39: the voltage follower circuit that D etc. form, by U
38: the subtracter that A etc. form, by U
39: the phase inverter that B etc. form, by U
36, U
37, U
38: B, U
38: C, U
22: the D/A switch circuit that C etc. form, by U
38: the adder that D etc. form.
8. device according to claim 1 is characterized in that: described data sending controling circuit comprises by U
32: B, U
12: C and D
701, R
705, C
702The synchronous count pulse of the transmission of forming forms circuit, by U
15: A, U
17: A, U
9: A, U
9: C, U
10: D and U
10: B forms the permission sending controling circuit that waits composition, U
34, U
35, U
40, U
41, U
43: A, U
43: the data transmission circuit that C etc. form, by U
33: four of A composition selects a circuit, by U
9: B, U
18: four of A composition selects a control circuit, by U
29: A.B, U
32: A.C.D, U
31, U
26: the transmission address control circuit that D etc. form, by U
30, R
701, R
702, C
701The sign indicating number of forming forms circuit.
9. device according to claim 1 is characterized in that: described power circuit and holding circuit comprise by D
207-
214The rectification circuit of forming is by V
201, V
203, V
203Deng the mu balanced circuit of forming, by D
216, D
217, D
201, D
202, D
203, R
209, R
208, J
3-1, R
210, R
211, U
50-1, U
50-2, U
47: E, U
49: D, J
3Deng the current foldback circuit of forming, by U
8: C, U
11Deng the overheating protection circuit of forming, by U
48: B, U
47: D, U
49: B.C, U
47: F etc. form line voltage control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97219174 CN2300472Y (en) | 1997-07-10 | 1997-07-10 | Digital fully automatic submerged arc welding rectifier remote controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97219174 CN2300472Y (en) | 1997-07-10 | 1997-07-10 | Digital fully automatic submerged arc welding rectifier remote controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2300472Y true CN2300472Y (en) | 1998-12-16 |
Family
ID=33935282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97219174 Expired - Fee Related CN2300472Y (en) | 1997-07-10 | 1997-07-10 | Digital fully automatic submerged arc welding rectifier remote controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2300472Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234601A (en) * | 2015-11-03 | 2016-01-13 | 成都埃森普特科技股份有限公司 | Method and circuit for remote control current of output cable of electric welding machine |
| CN105945461A (en) * | 2016-05-23 | 2016-09-21 | 中国石油天然气集团公司 | Drag-welding electric welding machine current remote control device |
| CN107271926A (en) * | 2017-06-29 | 2017-10-20 | 广东电网有限责任公司江门供电局 | Communication synthesis monitoring device terminal display |
| CN109551085A (en) * | 2018-12-07 | 2019-04-02 | 浙江肯得机电股份有限公司 | A kind of IGBT inversion multifunctional welding machine of liquid crystal display multi input voice prompting |
-
1997
- 1997-07-10 CN CN 97219174 patent/CN2300472Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234601A (en) * | 2015-11-03 | 2016-01-13 | 成都埃森普特科技股份有限公司 | Method and circuit for remote control current of output cable of electric welding machine |
| CN105945461A (en) * | 2016-05-23 | 2016-09-21 | 中国石油天然气集团公司 | Drag-welding electric welding machine current remote control device |
| CN107271926A (en) * | 2017-06-29 | 2017-10-20 | 广东电网有限责任公司江门供电局 | Communication synthesis monitoring device terminal display |
| CN109551085A (en) * | 2018-12-07 | 2019-04-02 | 浙江肯得机电股份有限公司 | A kind of IGBT inversion multifunctional welding machine of liquid crystal display multi input voice prompting |
| CN109551085B (en) * | 2018-12-07 | 2023-12-08 | 浙江肯得机电股份有限公司 | IGBT inversion multifunctional welding machine with liquid crystal display and multiple input voice prompt functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106941321B (en) | A kind of control circuit of synchronous rectifier | |
| CN106026712B (en) | The secondary side control methods and circuit of Switching Power Supply | |
| CN101641901B (en) | Fast powering-up of data communication system | |
| CN103887980B (en) | For regulating the system and method for power converting system | |
| CN2876828Y (en) | Lamp feed back liquid crystal display system | |
| CN102523406B (en) | Power circuit structure and LED liquid crystal television | |
| CN100539768C (en) | A kind of electromagnetic oven synchronisation control means and circuit thereof | |
| CN106129509B (en) | Integrated battery of charge-discharge controller | |
| CN104065275A (en) | Quasi-resonance control circuit and method for zero-voltage switching and flyback converter | |
| CN109980946A (en) | A kind of synchronous commutating control circuit and its control method | |
| CN101355306A (en) | Synchronous rectification circuit and method for power converter | |
| CN105450029B (en) | The feedback and circuit of Switching Power Supply | |
| CN105991034A (en) | Power conversion device with power-saving and high conversion efficiency mechanism | |
| CN104010399B (en) | Electromagnetic heater and control method thereof | |
| CN1667458A (en) | Liquid crystal display system with lamp feedback | |
| CN110492184A (en) | Storage battery maintainer, method and electronic equipment | |
| CN2300472Y (en) | Digital fully automatic submerged arc welding rectifier remote controller | |
| CN109742954A (en) | A kind of DC/DC converter | |
| CN204993623U (en) | TV set and backlight time schedule control circuit thereof | |
| CN109510481A (en) | A kind of synchronous commutating control circuit and control method | |
| CN209134310U (en) | A kind of synchronous commutating control circuit | |
| CN101662215A (en) | Power-management interface | |
| CN107742971A (en) | A kind of drive circuit and switching power circuit | |
| CN110416028A (en) | Contactor voltage control circuit and contactor system | |
| CN201266887Y (en) | Switch electric power circuit with wide input range |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |