CN209424718U - Two-wire system gas-shielded welder connects circuit and gas-shielded welder - Google Patents
Two-wire system gas-shielded welder connects circuit and gas-shielded welder Download PDFInfo
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- CN209424718U CN209424718U CN201822213899.1U CN201822213899U CN209424718U CN 209424718 U CN209424718 U CN 209424718U CN 201822213899 U CN201822213899 U CN 201822213899U CN 209424718 U CN209424718 U CN 209424718U
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Abstract
The utility model discloses a kind of two-wire system gas-shielded welder connection circuit and gas-shielded welders, the utility model includes the first isolated power supply circuit being arranged in wire-feed motor, control circuit, the second isolated power supply circuit and signal generating circuit, and power supply circuit and signal deteching circuit in host is arranged in；Power supply circuit is connect with the first isolated power supply circuit by main cables and the first control line, and signal generating circuit is connect with signal deteching circuit by the second control line；Isolated power supply is individually established at wire-feed motor by the first isolated power supply circuit, and realize that wire feed machine control signal and host control signal isolation by the optocoupler in the transformer and signal deteching circuit in the second isolated power supply circuit, eliminate the influence of common mode interference, improve the anti-interference ability of product, simultaneously, only pass through main cables and two control line connections between wire-feed motor and host, simplify number of cables, avoiding cable excessively causes to break down in long range operation, improves the reliability of product.
Description
Technical field
The utility model relates to welding technology field more particularly to a kind of two-wire system gas-shielded welder connection circuit and gas shield weldings
Machine.
Background technique
At present due to CO2Need to realize various control between gas-shielded welder wire-feed motor and host, thus control line radical compared with
It is more, general 6-14 item, such as six line CO2In gas welding wire feeder structure, controlling cable just includes wire feed rate control line, solenoid valve
Control line, weldingvoltage control line, control common ground, rifle switch control a line and rifle switch control b line, all control signals
And power supply is generated in the source of welding current, does not carry out isolation and control line quantity is more.
Above-mentioned design will lead to many problems, such as poor reliability, cable cross in long range operation pull easily snap off or
Poor contact；The shared control of poor anti jamming capability, host and wire-feed motor, it controls and does not carry out isolation processing between ground, it is non-
It is often easy to be influenced by common mode interference.
Above content is only used for auxiliary and understands the technical solution of the utility model, does not represent and recognizes that above content is existing
Technology.
Utility model content
The main purpose of the utility model is to provide a kind of two-wire system gas-shielded welder connection circuit and gas-shielded welders, it is intended to
It solves wire-feed motor and host control line quantity in the prior art excessively and the technology that is not isolated from main machine control signal of wire-feed motor is asked
Topic.
To achieve the above object, the utility model provides a kind of two-wire system gas-shielded welder connection circuit and gas-shielded welder, institute
State two-wire system gas-shielded welder connection circuit include the first isolated power supply circuit being set in wire-feed motor, control circuit, second every
From power circuit, signal generating circuit and it is set to the power supply circuit of host, signal deteching circuit；The power supply circuit with it is described
First isolated power supply circuit is connected by main cables and the first control line, the signal generating circuit and the signal deteching circuit
It is connected by the second control line；Wherein,
The power supply circuit, for powering for the wire-feed motor；
The first isolated power supply circuit, for being the control circuit and described the according to the voltage of the power supply circuit
Two isolated power supply circuits provide isolated power supply；
The control circuit for carrying out wire feed rate control and solenoid valve control when rifle switch is pressed, and is institute
It states the second isolated power supply circuit and cut-in voltage is provided；
The second isolated power supply circuit, for being provided when receiving the cut-in voltage for the signal generating circuit
Isolated power supply；
The signal generating circuit, for generating pwm signal according to the voltage signal of the second isolated power supply circuit；
The signal deteching circuit for the pwm signal to be converted into the voltage signal of direct current, and passes through the voltage
Signal reflects the size of the pwm signal and whether there is or not so that host is by identifying that the voltage signal is realized to output voltage
Control.
Preferably, the power supply circuit includes the first transformer；The first end of first transformer by main cables with
Electricity is isolated with described first by the first control line in the second end of the first isolated power supply circuit connection, first transformer
Source circuit connection, the second end of first transformer is with also connecing the second isolated power supply.
Preferably, the first isolated power supply circuit include rectifier, the first three terminal regulator, the second three terminal regulator,
First resistor, second resistance, first capacitor, the second capacitor and third capacitor；Wherein,
The first end of the rectifier is connect with the first end of first transformer, the second end of the rectifier and institute
The second end for stating the first transformer connects, third the first isolated power supply of termination of the rectifier, the 4th of the rectifier the
With connecing the first isolated power supply through the first capacitor, the 4th end of the rectifier is also defeated with first three terminal regulator at end
Enter end connection；
The adjustable side of first three terminal regulator is connect with the first end of the first resistor, first three-terminal voltage-stabilizing
The output end of device is connect with the first end of the second resistance, and the output end of first three terminal regulator is also through second electricity
Hold with connecing the first isolated power supply, the output end of first three terminal regulator also with the input terminal of second three terminal regulator,
The second isolated power supply circuit and rifle switch are separately connected；
Second the first isolated power supply of termination of the first resistor；
The second end of the second resistance is connect with the first end of the first resistor；
The output end of second three terminal regulator through the third capacitor with connecing the first isolated power supply, the two or three end
The output end of voltage-stablizer also with the second isolated power supply circuit connection, the public termination first of second three terminal regulator every
From power ground.
Preferably, the control circuit includes control circuit for wire feeder and solenoid valve control circuit；The wire-feed motor control
Circuit is switched with the rifle and the solenoid valve control circuit is separately connected, and the solenoid valve control circuit is isolated with described second
Power circuit connection.
Preferably, the control circuit for wire feeder includes first diode, the first potentiometer and wire feeding motor；Described first
The anode of diode is switched with the rifle and the solenoid valve control circuit is separately connected, the cathode of the first diode and institute
The second end of the first end and first potentiometer of stating the first potentiometer is separately connected；The third end of first potentiometer with
The anode connection of the wire feeding motor, the cathode of the wire feeding motor is with connecing the first isolated power supply.
Preferably, the solenoid valve control circuit includes the second diode and solenoid valve；The anode of second diode
It is separately connected with rifle switch and the second isolated power supply circuit, cathode and the solenoid valve of second diode
First end connection, second the first isolated power supply of termination of the solenoid valve.
Preferably, the second isolated power supply circuit includes the first IC chip, third diode, the four or two pole
Pipe, the 5th diode, the 6th diode, 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 4th electricity
Appearance, the 5th capacitor, the 6th capacitor, the 7th capacitor, the 8th capacitor, the 9th capacitor, the second transformer, third three terminal regulator and
Metal-oxide-semiconductor；Wherein,
The anode of the third diode is connect with the control circuit, and the cathode of the third diode is through the third
Resistance is connect with the reset terminal of first IC chip；
The anode of 4th diode is connect with the electric discharge output end of first IC chip, and the described 4th 2
The cathode of pole pipe through the 4th capacitor with connecing the first isolated power supply；
The retention time end of first IC chip is connect with the triggering end of first IC chip, institute
The triggering end for stating the first IC chip is connect with the anode of the 5th diode, and first IC chip connects
With terminating the first isolated power supply, the control voltage end of first IC chip connects the first isolation through the 6th capacitor on ground
Power ground, the output end of first IC chip are connect with the first end of the 6th resistance, the described first integrated electricity
The power end of road chip is connect with the output end of second three terminal regulator；
The cathode of 5th diode is connect with the first end of the 4th resistance；
The second end of 4th resistance is connect with the first end of the 5th resistance；
The second end of 5th resistance through the 5th capacitor with connecing the first isolated power supply；
The second end of 6th resistance is connect with the grid of the metal-oxide-semiconductor；
The source electrode of the metal-oxide-semiconductor with connecing the first isolated power supply, the drain electrode and the first of second transformer of the metal-oxide-semiconductor
End connection, the drain electrode of the metal-oxide-semiconductor also through the 7th capacitor with connecing the first isolated power supply；
The second end of second transformer is connect through the 7th resistance with the output end of first three terminal regulator,
The third end of second transformer is connect with the anode of the 6th diode, the 4th termination second of second transformer
Isolated power supply；
The input terminal of the cathode of 6th diode and the first end of the 8th capacitor and third three terminal regulator connects
It connects；
Second the second isolated power supply of termination of the 8th capacitor；
The output end of the third three terminal regulator is connect with the signal generating circuit, the third three terminal regulator
Output end also through the 9th capacitor with connecing the second isolated power supply, electricity is isolated in the public termination second of the third three terminal regulator
Source.
Preferably, the signal generating circuit includes the second IC chip, the 7th diode, the 8th diode, the
Ten capacitors, the 11st capacitor, the 12nd capacitor, the 8th resistance, the 9th resistance, the tenth resistance, eleventh resistor, twelfth resistor
And second potentiometer；Wherein,
Output of the reset terminal of second IC chip through the 8th resistance and the third three terminal regulator
End connection, the electric discharge output end of second IC chip are connect with the first end of the 9th resistance, second collection
It is connect at the retention time end of circuit chip with the triggering end of second IC chip, second IC chip
Triggering end connect with the first end of second potentiometer, the triggering end of second IC chip is also through the described tenth
One capacitor with connecing the second isolated power supply, the ground connection of second IC chip with terminating the second isolated power supply, described second
The control voltage end of IC chip through the 12nd capacitor with connecing the second isolated power supply, second IC chip
Output end connect through the twelfth resistor with the signal deteching circuit, the power end of second IC chip with
The output end of the third three terminal regulator connects；
The second end of 9th resistance through the tenth capacitor with connecing the second isolated power supply；
The second end of second potentiometer is connect with the cathode of the 7th diode, the third of second potentiometer
End is connect with the anode of the 8th diode；
The anode of 7th diode is connect with the first end of the tenth resistance；
The second end of tenth resistance is connect with the first end of the 9th resistance；
The cathode of 8th diode is connect with the first end of the eleventh resistor；
The second end of the eleventh resistor is connect with the first end of the 9th resistance.
Preferably, the signal deteching circuit include photo-coupler, thirteenth resistor, the 14th resistance, the 15th resistance,
16th resistance, the 13rd capacitor, the first follower and the second follower；Wherein,
The first end of the photo-coupler is connect with the signal generating circuit, the second termination second of the photo-coupler
Isolated power supply, the third end of the photo-coupler is connect with the input cathode of first follower, the photo-coupler
4th end is connect through the thirteenth resistor with the first power supply；
First end is connect with the third end of the photo-coupler after 14th resistance is in parallel with the 13rd capacitor,
The second termination host controls power ground after 14th resistance is in parallel with the 13rd capacitor；
The input anode of first follower is connect with first power supply, and the input anode of first follower is also
It is connect with the output end of first follower, the input of the input cathode and second follower of first follower is just
Pole connection, the output end of first follower are connect with the controller of the host；
The first end of 15th resistance is connect with first power supply, the second end of the 15th resistance with it is described
The input cathode of second follower connects, and the second end of the 15th resistance also connects host control electricity through the 16th resistance
Source；
The input cathode of second follower connect host control power ground, the output end of second follower with it is described
The controller of host connects.
The utility model also proposes that a kind of gas-shielded welder, the gas-shielded welder include two-wire system gas-shielded welder as described above
Connect circuit.
The utility model includes the first isolated power supply circuit, control circuit, the second isolated power supply being arranged in wire-feed motor
Power supply circuit and signal deteching circuit in host is arranged in circuit and signal generating circuit；Electricity is isolated with first in power supply circuit
Source circuit is connected by main cables and the first control line, and signal generating circuit and signal deteching circuit are connected by the second control line
It connects；Isolated power supply is individually established at wire-feed motor by the first isolated power supply circuit, and by the second isolated power supply circuit
Optocoupler in transformer and signal deteching circuit realizes that wire feed machine control signal and host control signal isolation, and it is dry to eliminate common mode
The influence disturbed improves the anti-interference ability of product, meanwhile, only pass through main cables and two control lines between wire-feed motor and host
Connection, simplifies number of cables, avoiding cable excessively causes to break down in long range operation, improves the reliable of product
Property.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is a kind of functional circuit schematic diagram of two-wire system gas-shielded welder connection one embodiment of circuit of the utility model；
Fig. 2 is a kind of structural schematic diagram of two-wire system gas-shielded welder connection one embodiment of circuit of the utility model.
Drawing reference numeral explanation:
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that if related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding,
Afterwards ...), then directionality instruction is only used for explaining opposite between each component under a certain particular pose (as shown in the picture)
Positional relationship, motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, if relating to the description of " first ", " second " etc. in the utility model embodiment, " first ", " the
Two " etc. description is used for description purposes only, and is not understood to indicate or imply its relative importance or is implicitly indicated meaning
The quantity of the technical characteristic shown." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one
A this feature.It in addition, the technical solution between each embodiment can be combined with each other, but must be with ordinary skill
Based on personnel can be realized, this technical side will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of case is not present, also not within the protection scope of the requires of the utility model.
The utility model provides a kind of two-wire system gas-shielded welder connection circuit, referring to Fig.1, in one embodiment, described two
It includes the first isolated power supply circuit 200 being set in wire-feed motor, control circuit 300, second that line gas-shielded welder, which connects circuit,
Isolated power supply circuit 400, signal generating circuit 500 and it is set to the power supply circuit 100 of host, signal deteching circuit 600；It is described
Power supply circuit 100 is connect with the first isolated power supply circuit 200 by main cables and the first control line, and the signal generates electricity
Road 500 is connect with the signal deteching circuit 600 by the second control line；Wherein, the power supply circuit 100, for being described
Wire-feed motor power supply；The first isolated power supply circuit 200, for being the control electricity according to the voltage of the power supply circuit 100
Road 300 and the second isolated power supply circuit 400 provide isolated power supply；The control circuit 300, for being pressed in rifle switch S1
Wire feed rate control and solenoid valve control will be carried out when lower, and provide cut-in voltage for the second isolated power supply circuit 400；It is described
Second isolated power supply circuit 400, for being that the signal generating circuit 500 provides isolation electricity when receiving the cut-in voltage
Source；The signal generating circuit 500, for generating pwm signal according to the voltage signal of the second isolated power supply circuit 400；
The signal deteching circuit 600 for the pwm signal to be converted into the voltage signal of direct current, and passes through the voltage signal
Reflect the size of the pwm signal and whether there is or not so that host is by identifying that the voltage signal realizes the control to output voltage.
It should be noted that split type CO2 gas-shielded welder be controlled by wire-feed motor wire feed rate, solenoid valve on-off,
Host output has that it's too late host output voltage, and wire-feed motor needs host to provide power supply to carry out supply control circuit work, simultaneously
Wire-feed motor needs these signals being transferred to host, so that host generates corresponding actions.Have 6 between usual wire-feed motor and host~
14 lines are respectively used to wire feed rate control, solenoid valve control, weldingvoltage control, control publicly and rifle switch control etc.,
In operation due to wire-feed motor, it needs to have relatively long distance with host, cable is excessively easy to cause the failures such as poor contact, serious shadow
The stability of product has been rung, and has been designed through this embodiment, a main cables, two controls are only needed between wire-feed motor and host
The transmission of all control signals can be realized in line, solves the problems, such as that control line is a fairly large number of.
It should be understood that by the way that the first isolated power supply circuit 200 is arranged in wire-feed motor, by the power supply of host with
Wire-feed motor is isolated, and is stood alone as wire-feed motor power supply by the first isolated power supply circuit 200, so that wire-feed motor is realized independent control, mention
The high stability of product.
In addition, passing through the design of the second isolated power supply circuit 400, isolated power supply can be provided for signal generating circuit 500,
Signal generating circuit 500 generates pwm signal under the collaboration of isolated power supply and peripheral circuits, using signal deteching circuit 600
In optocoupler pwm signal is sent to host, and since optocoupler has buffer action, thus realize simultaneously wire feed machine control signal with
The isolation of main machine control signal.
The present embodiment individually establishes isolated power supply by the first isolated power supply circuit at wire-feed motor, and passes through the second isolation
Optocoupler in transformer and signal deteching circuit in power circuit realizes that wire feed machine control signal and host control signal isolation,
The influence for eliminating common mode interference improves the anti-interference ability of product, meanwhile, only pass through main cables between wire-feed motor and host
And two control line connections, number of cables is simplified, avoiding cable excessively causes to break down in long range operation, improves
The reliability of product.
It is a kind of structural representation of two-wire system gas-shielded welder connection one embodiment of circuit of the utility model referring to Fig. 2, Fig. 2
Figure.
In the present embodiment, the power supply circuit 100 includes the first transformer T1；The first end of the first transformer T1 is logical
It crosses main cables to connect with the first isolated power supply circuit 200, the second end of the first transformer T1 passes through the first control line
It is connect with the first isolated power supply circuit 200, the second end of the first transformer T1 is with also connecing the second isolated power supply.
Wherein, the first transformer T1 is 27V Industrial Frequency Transformer, is powered for wire-feed motor.
Further, the first isolated power supply circuit 200 includes rectifier UR, the first three terminal regulator U1, the two or three
Hold voltage-stablizer U2, first resistor R1, second resistance R2, first capacitor C1, the second capacitor C2 and third capacitor C3；Wherein, described
The first end of rectifier UR is connect with the first end of the first transformer T1, the second end of the rectifier UR and described first
The second end of transformer T1 connects, third the first isolated power supply of termination of the rectifier UR, the 4th of the rectifier UR the
End through the first capacitor C1 with connecing the first isolated power supply, the 4th end of the rectifier UR also with first three terminal regulator
The input terminal of U1 connects；The adjustable side of the first three terminal regulator U1 is connect with the first end of the first resistor R1, described
The output end of first three terminal regulator U1 is connect with the first end of the second resistance R2, and the first three terminal regulator U1's is defeated
Outlet also through the second capacitor C2 with connecing the first isolated power supply, the output end of the first three terminal regulator U1 is also with described
The input terminal of two three terminal regulator U2, the second isolated power supply circuit 400 and the rifle switch S1 are separately connected；Described first
Second the first isolated power supply of termination of resistance R1；The first end of the second end of the second resistance R2 and the first resistor R1
Connection；The output end of the second three terminal regulator U2 through the third capacitor C3 with connecing the first isolated power supply, the described 2nd 3
The output end of end voltage-stablizer U2 is also connect with the second isolated power supply circuit 400, and the second three terminal regulator U2's is public
With terminating the first isolated power supply.
It should be understood that there are mainly two types of three terminal regulators, a kind of output voltage is fixed, referred to as three ends of fixed output
Voltage-stablizer, another output voltage are adjustable, referred to as adjustable output three terminal regulators, and it is defeated that fixation is used in this embodiment
Three terminal regulator out.In linear integrated regulator, only there are three leading-out terminals for three terminal regulator, have outward element few, make
The advantages that with conveniently, performance is stablized, cheap.
In the concrete realization, the first transformer T1 passes through main cables and the first control line to wire-feed motor for AC27V in host
Alternating current, this electricity is in wire-feed motor using the first three terminal regulator U1 after rectifier UR rectification and first capacitor C1 filtering
Generation+24V regulated power supply ,+24V is using the second three terminal regulator U2 generation+12V regulated power supply.
Further, the control circuit 300 includes control circuit for wire feeder 310 and solenoid valve control circuit 320；It is described
Control circuit for wire feeder 310 is separately connected with the rifle switch S1 and the solenoid valve control circuit 320, the solenoid valve control
Circuit 320 is connect with the second isolated power supply circuit 400.
Specifically, the control circuit for wire feeder 310 includes first diode D1, the first potentiometer VR1 and wire feeding motor
B1；The anode of the first diode D1 is separately connected with the rifle switch S1 and the solenoid valve control circuit 320, and described
The cathode of one diode D1 connects respectively with the first end of the first potentiometer VR1 and the second end of the first potentiometer VR1
It connects；The third end of the first potentiometer VR1 is connect with the anode of the wire feeding motor B1, and the cathode of the wire feeding motor B1 connects
First isolated power supply.
It should be understood that wire feeding motor B1 passes through first diode D1 and the first potentiometer after rifle switch S1 is pressed
VR1 obtains voltage and current, to be rotated, the first potentiometer VR1 is the wire feed rate potentiometer in wire-feed motor, can adjust
Save wire feed speed.
The solenoid valve control circuit 320 includes the second diode D2 and solenoid valve B2；The sun of the second diode D2
Pole is separately connected with the rifle switch S1 and the second isolated power supply circuit 400, the cathode of the second diode D2 and institute
The first end connection of solenoid valve B2 is stated, the second of the solenoid valve B2 is with terminating the first isolated power supply.
It should be understood that solenoid valve B2 can obtain voltage and electricity by the second diode D2 after rifle switch S1 is pressed
Stream is supplied gas to be attracted.
Further, the second isolated power supply circuit 400 include the first integrated circuit die I C1, third diode D3,
4th diode D4, the 5th diode D5, the 6th diode D6,3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th
Resistance R6, the 7th resistance R7, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6, the 7th capacitor C7, the 8th capacitor C8, the 9th
Capacitor C9, the second transformer T2, third three terminal regulator U3 and metal-oxide-semiconductor Q1；Wherein, the anode of the third diode D3 and institute
The connection of control circuit 300 is stated, the cathode of the third diode D3 is through the 3rd resistor R3 and first ic core
The reset terminal RESET connection of piece IC1；The electric discharge of the anode of the 4th diode D4 and the first integrated circuit die I C1
Output end DISCHG connection, the cathode of the 4th diode D4 through the 4th capacitor C4 with connecing the first isolated power supply；It is described
The triggering end TRIG of the retention time end THOLD of first integrated circuit die I C1 and the first integrated circuit die I C1 connects
It connects, the triggering end TRIG of the first integrated circuit die I C1 is connect with the anode of the 5th diode D5, first collection
With connecing the first isolated power supply at the ground terminal GND of circuit chip IC1, the control voltage end of the first integrated circuit die I C1
CVOLT through the 6th capacitor C6 with connecing the first isolated power supply, the output end OUT of the first integrated circuit die I C1 and institute
State the first end connection of the 6th resistance R6, the power end VCC and second three-terminal voltage-stabilizing of the first integrated circuit die I C1
The output end of device U2 connects；The cathode of the 5th diode D5 is connect with the first end of the 4th resistance R4；Described 4th
The second end of resistance R4 is connect with the first end of the 5th resistance R5；The second end of the 5th resistance R5 is through the 5th electricity
Hold C5 with connecing the first isolated power supply；The second end of the 6th resistance R6 is connect with the grid of the metal-oxide-semiconductor Q1；The metal-oxide-semiconductor
With connecing the first isolated power supply, the drain electrode of the metal-oxide-semiconductor Q1 is connect the source electrode of Q1 with the first end of the second transformer T2, described
The drain electrode of metal-oxide-semiconductor Q1 also through the 7th capacitor C7 with connecing the first isolated power supply；The second end of the second transformer T2 is through institute
The 7th resistance R7 is stated to connect with the output end of the first three terminal regulator U1, the third end of the second transformer T2 with it is described
The anode of 6th diode D6 connects, the 4th the second isolated power supply of termination of the second transformer T2；Six or two pole
The cathode of pipe D6 is connect with the input terminal of the first end of the 8th capacitor C8 and third three terminal regulator U3；8th capacitor
Second the second isolated power supply of termination of C8；The output end and the signal generating circuit 500 of the third three terminal regulator U3
Connection, the output end of the third three terminal regulator U3 also through the 9th capacitor C9 with connecing the second isolated power supply, the third
The second isolated power supply of public termination of three terminal regulator U3.
It should be noted that the second isolated power supply circuit 400 be a reverse exciting switching voltage regulator, the presence or absence of this power supply directly by
Rifle switch S1 control, after rifle switch S1 is pressed, control circuit 300 is that the second isolated power supply circuit 400 provides cut-in voltage, the
One integrated circuit die I C1 obtains enabling signal by third diode D3 and 3rd resistor R3, and passes through the second transformer T2
Isolated power supply is provided for signal generating circuit 500.
Further, the signal generating circuit 500 includes the second integrated circuit die I C2, the 7th diode D7, the 8th
Diode D8, the tenth capacitor C10, the 11st capacitor C11, the 12nd capacitor C12, the 8th resistance R8, the 9th resistance R9, the tenth electricity
Hinder R10, eleventh resistor R11, twelfth resistor R12 and the second potentiometer VR2；Wherein, the second integrated circuit die I C2
Reset terminal RESET connect through the 8th resistance R8 with the output end of the third three terminal regulator U3, described second is integrated
The electric discharge output end DISCHG of circuit chip IC2 is connect with the first end of the 9th resistance R9, second ic core
The retention time end THOLD of piece IC2 is connect with the triggering end TRIG of the second integrated circuit die I C2, and described second is integrated
The triggering end TRIG of circuit chip IC2 is connect with the first end of the second potentiometer VR2, second IC chip
The triggering end of IC2 also through the 11st capacitor C11 with connecing the second isolated power supply, the second integrated circuit die I C2's connects
With connecing the second isolated power supply, the control voltage end CVOLT of the second integrated circuit die I C2 is through the described 12nd by ground terminal GND
Capacitor C12 with connecing the second isolated power supply, the output end of the second integrated circuit die I C2 through the twelfth resistor R12 with
The signal deteching circuit 600 connects, the power end VCC and the third three-terminal voltage-stabilizing of the second integrated circuit die I C2
The output end of device U3 connects；The second end of the 9th resistance R9 through the tenth capacitor C10 with connecing the second isolated power supply；It is described
The second end of second potentiometer VR2 is connect with the cathode of the 7th diode D7, the third end of the second potentiometer VR2 with
The anode of the 8th diode D8 connects；The anode of the 7th diode D7 and the first end of the tenth resistance R10 connect
It connects；The second end of the tenth resistance R10 is connect with the first end of the 9th resistance R9；The cathode of the 8th diode D8
It is connect with the first end of the eleventh resistor R11；The of the second end of the eleventh resistor R11 and the 9th resistance R9
One end connection.
It should be noted that the second potentiometer VR2 is output voltage potentiometer, can be used to adjust PWM pulsewidth.
Further, the signal deteching circuit include photo-coupler OC, thirteenth resistor R13, the 14th resistance R14,
15th resistance R15, the 16th resistance R16, the 13rd capacitor C13, the first follower U5A and the second follower U5B；Wherein,
The first end of the photo-coupler OC is connect with the signal generating circuit 500, the second termination second of the photo-coupler OC
Isolated power supply, the third end of the photo-coupler OC is connect with the input cathode of the first follower U5A, the optical coupling
The 4th end of device OC is connect through the thirteenth resistor R13 with the first power supply 15V；The 14th resistance R14 and the described tenth
First end is connect with the third end of the photo-coupler OC after three capacitor C13 are in parallel, the 14th resistance R14 and the described tenth
Second termination host controls power ground after three capacitor C13 are in parallel；The input anode of the first follower U5A and first electricity
The input anode of source 15V connection, the first follower U5A is also connect with the output end of the first follower U5A, and described the
The input cathode of one follower U5A is connect with the input anode of the second follower U5B, and the first follower U5A's is defeated
Outlet is connect with the controller of the host；The first end of the 15th resistance R15 is connect with the first power supply 15V, institute
The second end for stating the 15th resistance R15 is connect with the input cathode of the second follower U5B, the 15th resistance R15's
Second end also connects host control power ground through the 16th resistance R16；The input cathode of the second follower U5B connects host
Power ground is controlled, the output end of the second follower U5B is connect with the controller of the host.
It should be understood that PWM square wave makes photo-coupler OC shine by duty cycle square wave by the second control line, to make
OC grade of photo-coupler obtains the pwm signal of same duty ratio, this signal is isolated with wire-feed motor, the square wave of OC grade of photo-coupler
Signal can be filtered into average voltage by the 14th resistance R14 and the 13rd capacitor C13, and gentle voltage signal is generated at A, this
Voltage signal height is linear with PWM duty cycle, and duty ratio is higher, this voltage signal is higher, no PWM, then without electricity at A
Pressure, this voltage participate in host output voltage control with subsequently forming voltage Setting signal by the first follower U5A, while electric at A
It presses and is compared with a minimum movements reference voltage of the second follower U5B input cathode, it is defeated in the second follower U5B output end
Host output switching signal out, as no PWM, the second follower U5B output end exports low level, host Non voltage output, when having
The second follower U5B output end exports high level when PWM, and host has voltage output.
Hereinafter, being illustrated in combination with fig. 2 the working principle of the present embodiment:
First transformer T1 gives wire-feed motor power supply by main cables and the first control line, this electricity in wire-feed motor by pressure stabilizing at
24V regulated power supply and 12V regulated power supply are each circuit power supply in wire-feed motor.After rifle switch S1 is pressed, wire feeding motor B1 turns
It moves and passes through the first potentiometer VR1 and adjust wire feed rate, solenoid valve B2 is also attracted and supplies gas, and the first integrated circuit die I C1 passes through
Third diode D3 and 3rd resistor R3 receives enabling signal, and flyback the second transformer T2 is the second integrated circuit die I C2
Power supply, the second integrated circuit die I C2 generate pwm signal, this signal obtains same duty ratio after photo-coupler OC transmission
Pwm signal realizes being isolated for wire feed machine control signal and main machine control signal, and pwm signal can generate gentle after filtering
Voltage signal can detecte the size of output voltage by the first follower U5A, be can detecte out by the second follower U5B
Whether host has voltage output, so that host is to output voltage control.
The present embodiment individually establishes isolated power supply by the first isolated power supply circuit at wire-feed motor, and passes through the second isolation
Optocoupler in transformer and signal deteching circuit in power circuit realizes that wire feed machine control signal and host control signal isolation,
The influence for eliminating common mode interference improves the anti-interference ability of product, meanwhile, only pass through main cables between wire-feed motor and host
And two control line connections, number of cables is simplified, avoiding cable excessively causes to break down in long range operation, improves
The reliability of product.
The utility model also proposes that a kind of gas-shielded welder, the gas-shielded welder include two-wire system gas-shielded welder as described above
Circuit is connected, the circuit structure of the two-wire system gas-shielded welder connection circuit of the gas-shielded welder can refer to above-described embodiment, herein
It repeats no more；It is understood that connecting circuit since the gas-shielded welder of the present embodiment uses above-mentioned two-wire system gas-shielded welder
Technical solution, therefore the gas-shielded welder have above-mentioned all beneficial effects.
The above is only the preferred embodiments of the utility model, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (10)
1. a kind of two-wire system gas-shielded welder connects circuit, which is characterized in that the two-wire system gas-shielded welder connection circuit includes setting
It the first isolated power supply circuit for being placed in wire-feed motor, control circuit, the second isolated power supply circuit, signal generating circuit and is set to
Power supply circuit, the signal deteching circuit of host；The power supply circuit and the first isolated power supply circuit pass through main cables and the
The connection of one control line, the signal generating circuit are connect with the signal deteching circuit by the second control line；Wherein,
The power supply circuit, for powering for the wire-feed motor；
The first isolated power supply circuit, for according to the voltage of the power supply circuit be the control circuit and described second every
Isolated power supply is provided from power circuit；
The control circuit for carrying out wire feed rate control and solenoid valve control when rifle switch is pressed, and is described the
Two isolated power supply circuits provide cut-in voltage；
The second isolated power supply circuit, for providing isolation when receiving the cut-in voltage for the signal generating circuit
Power supply；
The signal generating circuit, for generating pwm signal according to the voltage signal of the second isolated power supply circuit；
The signal deteching circuit for the pwm signal to be converted into the voltage signal of direct current, and passes through the voltage signal
Reflect the size of the pwm signal and whether there is or not so that host is by identifying that the voltage signal realizes the control to output voltage.
2. two-wire system gas-shielded welder as described in claim 1 connects circuit, which is characterized in that the power supply circuit includes first
Transformer；The first end of first transformer is become by main cables and the first isolated power supply circuit connection, described first
The second end of depressor is by the first control line and the first isolated power supply circuit connection, and the second end of first transformer is also
With connecing the second isolated power supply.
3. two-wire system gas-shielded welder as claimed in claim 2 connects circuit, which is characterized in that the first isolated power supply circuit
Including rectifier, the first three terminal regulator, the second three terminal regulator, first resistor, second resistance, first capacitor, the second capacitor
And third capacitor；Wherein,
The first end of the rectifier is connect with the first end of first transformer, the second end of the rectifier and described the
The second end of one transformer connects, and with terminating the first isolated power supply, the 4th end of the rectifier passes through the third of the rectifier
The first capacitor with connecing the first isolated power supply, input terminal of the 4th end of the rectifier also with first three terminal regulator
Connection；
The adjustable side of first three terminal regulator is connect with the first end of the first resistor, first three terminal regulator
Output end is connect with the first end of the second resistance, and the output end of first three terminal regulator also connects through second capacitor
First isolated power supply, the output end of first three terminal regulator also with the input terminal of second three terminal regulator, described
Second isolated power supply circuit and rifle switch are separately connected；
Second the first isolated power supply of termination of the first resistor；
The second end of the second resistance is connect with the first end of the first resistor；
The output end of second three terminal regulator through the third capacitor with connecing the first isolated power supply, second three-terminal voltage-stabilizing
For the output end of device also with the second isolated power supply circuit connection, electricity is isolated in the public termination first of second three terminal regulator
Source.
4. two-wire system gas-shielded welder as claimed in claim 3 connects circuit, which is characterized in that the control circuit includes wire feed
Machine control circuit and solenoid valve control circuit；The control circuit for wire feeder and rifle switch and the solenoid valve control circuit
It is separately connected, the solenoid valve control circuit and the second isolated power supply circuit connection.
5. two-wire system gas-shielded welder as claimed in claim 4 connects circuit, which is characterized in that the control circuit for wire feeder packet
Include first diode, the first potentiometer and wire feeding motor；The anode of the first diode and rifle switch and the electromagnetism
Valve controling circuit is separately connected, the first end and first current potential of the cathode of the first diode and first potentiometer
The second end of device is separately connected；The third end of first potentiometer is connect with the anode of the wire feeding motor, the wire feed electricity
The cathode of machine is with connecing the first isolated power supply.
6. two-wire system gas-shielded welder as claimed in claim 5 connects circuit, which is characterized in that the solenoid valve control circuit packet
Include the second diode and solenoid valve；The anode and the rifle of second diode switch and the second isolated power supply circuit point
It does not connect, the cathode of second diode is connect with the first end of the solenoid valve, the second termination first of the solenoid valve
Isolated power supply.
7. the two-wire system gas-shielded welder as described in any one of claim 4 to 6 connects circuit, which is characterized in that described second
Isolated power supply circuit include the first IC chip, third diode, the 4th diode, the 5th diode, the 6th diode,
3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 4th capacitor, the 5th capacitor, the 6th capacitor, the 7th
Capacitor, the 8th capacitor, the 9th capacitor, the second transformer, third three terminal regulator and metal-oxide-semiconductor；Wherein,
The anode of the third diode is connect with the control circuit, and the cathode of the third diode is through the 3rd resistor
It is connect with the reset terminal of first IC chip；
The anode of 4th diode is connect with the electric discharge output end of first IC chip, the 4th diode
Cathode through the 4th capacitor with connecing the first isolated power supply；
The retention time end of first IC chip is connect with the triggering end of first IC chip, and described
The triggering end of one IC chip is connect with the anode of the 5th diode, the ground terminal of first IC chip
With connecing the first isolated power supply, the control voltage end of first IC chip connects the first isolated power supply through the 6th capacitor
Ground, the output end of first IC chip are connect with the first end of the 6th resistance, first ic core
The power end of piece is connect with the output end of second three terminal regulator；
The cathode of 5th diode is connect with the first end of the 4th resistance；
The second end of 4th resistance is connect with the first end of the 5th resistance；
The second end of 5th resistance through the 5th capacitor with connecing the first isolated power supply；
The second end of 6th resistance is connect with the grid of the metal-oxide-semiconductor；
With connecing the first isolated power supply, the drain electrode of the metal-oxide-semiconductor connects the source electrode of the metal-oxide-semiconductor with the first end of second transformer
Connect, the drain electrode of the metal-oxide-semiconductor also through the 7th capacitor with connecing the first isolated power supply；
The second end of second transformer is connect through the 7th resistance with the output end of first three terminal regulator, described
The third end of second transformer is connect with the anode of the 6th diode, the 4th the second isolation of termination of second transformer
Power ground；
The cathode of 6th diode is connect with the input terminal of the first end of the 8th capacitor and third three terminal regulator；
Second the second isolated power supply of termination of the 8th capacitor；
The output end of the third three terminal regulator is connect with the signal generating circuit, the output of the third three terminal regulator
End also through the 9th capacitor with connecing the second isolated power supply, the second isolated power supply of public termination of the third three terminal regulator
Ground.
8. two-wire system gas-shielded welder as claimed in claim 7 connects circuit, which is characterized in that the signal generating circuit includes
Second IC chip, the 7th diode, the 8th diode, the tenth capacitor, the 11st capacitor, the 12nd capacitor, the 8th electricity
Resistance, the 9th resistance, the tenth resistance, eleventh resistor, twelfth resistor and the second potentiometer；Wherein,
The reset terminal of second IC chip connects through the output end of the 8th resistance and the third three terminal regulator
It connects, the electric discharge output end of second IC chip is connect with the first end of the 9th resistance, the described second integrated electricity
The retention time end of road chip is connect with the triggering end of second IC chip, the touching of second IC chip
Originator is connect with the first end of second potentiometer, and the triggering end of second IC chip is also through the 11st electricity
Hold with connecing the second isolated power supply, with terminating the second isolated power supply, described second is integrated for the ground connection of second IC chip
The control voltage end of circuit chip through the 12nd capacitor with connecing the second isolated power supply, second IC chip it is defeated
Outlet is connect through the twelfth resistor with the signal deteching circuit, the power end of second IC chip with it is described
The output end of third three terminal regulator connects；
The second end of 9th resistance through the tenth capacitor with connecing the second isolated power supply；
The second end of second potentiometer is connect with the cathode of the 7th diode, the third end of second potentiometer with
The anode of 8th diode connects；
The anode of 7th diode is connect with the first end of the tenth resistance；
The second end of tenth resistance is connect with the first end of the 9th resistance；
The cathode of 8th diode is connect with the first end of the eleventh resistor；
The second end of the eleventh resistor is connect with the first end of the 9th resistance.
9. two-wire system gas-shielded welder as claimed in claim 8 connects circuit, which is characterized in that the signal deteching circuit includes
Photo-coupler, thirteenth resistor, the 14th resistance, the 15th resistance, the 16th resistance, the 13rd capacitor, the first follower and
Second follower；Wherein,
The first end of the photo-coupler is connect with the signal generating circuit, second the second isolation of termination of the photo-coupler
Power ground, the third end of the photo-coupler are connect with the input cathode of first follower, and the 4th of the photo-coupler the
End is connect through the thirteenth resistor with the first power supply；
First end is connect with the third end of the photo-coupler after 14th resistance is in parallel with the 13rd capacitor, described
The second termination host controls power ground after 14th resistance is in parallel with the 13rd capacitor；
The input anode of first follower is connect with first power supply, the input anode of first follower also with institute
The output end connection of the first follower is stated, the input cathode of first follower and the input anode of second follower connect
It connects, the output end of first follower is connect with the controller of the host；
The first end of 15th resistance is connect with first power supply, the second end and described second of the 15th resistance
The input cathode of follower connects, and the second end of the 15th resistance also connects host control power supply through the 16th resistance
Ground；
The input cathode of second follower connects host control power ground, the output end and the host of second follower
Controller connection.
10. a kind of gas-shielded welder, which is characterized in that protected including two-wire system gas as claim in any one of claims 1 to 9
Welding machine connects circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822213899.1U CN209424718U (en) | 2018-12-26 | 2018-12-26 | Two-wire system gas-shielded welder connects circuit and gas-shielded welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822213899.1U CN209424718U (en) | 2018-12-26 | 2018-12-26 | Two-wire system gas-shielded welder connects circuit and gas-shielded welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209424718U true CN209424718U (en) | 2019-09-24 |
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|---|---|---|---|
| CN201822213899.1U Active CN209424718U (en) | 2018-12-26 | 2018-12-26 | Two-wire system gas-shielded welder connects circuit and gas-shielded welder |
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| Country | Link |
|---|---|
| CN (1) | CN209424718U (en) |
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2018
- 2018-12-26 CN CN201822213899.1U patent/CN209424718U/en active Active
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Address after: 518133 floor 501 (4-5), building B, Feiyang science and Technology Innovation Park, No.8, Longchang Road, 67 District, Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province:No.4 factory building, Fenghuang fourth industrial zone, Fenghuang community, Fuyong street, Bao'an District, Shenzhen City) 518133 Room 501, building B, Feiyang science and Technology Innovation Park, No.8, Longchang Road, 67 District, Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Ruiling Industrial Group Co.,Ltd. Address before: 2-6 / F, building B, Feiyang technology, No.8, Longchang Road, Baocheng 67 District, Bao'an District, Shenzhen, Guangdong 518103 Patentee before: SHENZHEN RILAND INDUSTRY Co.,Ltd. |
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