CN207563887U - A kind of novel argon arc welding machine protective gas control circuit - Google Patents
A kind of novel argon arc welding machine protective gas control circuit Download PDFInfo
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- CN207563887U CN207563887U CN201721299096.1U CN201721299096U CN207563887U CN 207563887 U CN207563887 U CN 207563887U CN 201721299096 U CN201721299096 U CN 201721299096U CN 207563887 U CN207563887 U CN 207563887U
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Abstract
The utility model discloses a kind of novel argon arc welding machine protective gas control circuits, it is related to argon arc welding machine technical field；Welding circuit given circuit is connect with voltage conversion circuit, and voltage conversion circuit connection is connect with gas delay timing circuit, and gas delay timing circuit is connect with solenoid valve action executing circuit；The utility model employs protective gas delay time adaptation control circuit; i.e. by welding current given voltage signal come Synchronization Control delay time length; gas delay time is made to be automatically adjusted by a certain percentage according to welding current size; so as to reach best protection effect; gas consumption is saved simultaneously, simplifies manual operation.
Description
Technical field：
The utility model is related to a kind of novel argon arc welding machine protective gas control circuits, belong to argon arc welding machine technical field.
Background technology：
Protective gas control device (circuit) used in now can be divided into two classes：
1. delay time is fixed.When stopping welding, protective gas delay a period of time just turns off, generally 1 grade or 2 of setting
It the shelves constant time lag time, is determined, cannot be adjusted by welding machine internal delay time circuit parameter.This mode circuit is simple, and shortcoming is small
When electric current welds, the time is partially long, and protective gas consumption is larger.When high current is welded, guard time falls short of, and influences welding effect
Fruit.
2. delay time is independently adjustable.This mode sets gas delay adjustment knob on welding machine panel, passes through current potential
Device adjusts delay time, is continuously adjusted in a certain range, adapts to the requirement that delay time is set under various welding conditions.It lacks
Point is more demanding to operating personnel, is needed according to the welding current and protecting effect when using, and artificial determining one is most preferably prolonged
When the time, manually adjust, it is inconvenient for operation, it is desirable that be adjusted at any time according to welding current, optimum efficiency is otherwise not achieved.
Utility model content：
In view of the above-mentioned problems, the technical problem to be solved by the present invention is to provide a kind of novel argon arc welding machine protective gas
Control circuit.
A kind of novel argon arc welding machine protective gas control circuit of the utility model, it include welding circuit given circuit,
Voltage conversion circuit, gas delay timing circuit, solenoid valve action executing circuit；Welding circuit given circuit and voltage conversion electricity
Road connects, and voltage conversion circuit connection is connect with gas delay timing circuit, and gas delay timing circuit is held with electromagnetism valve events
Row circuit connects.
Further, the welding circuit given circuit, voltage conversion circuit, gas delay timing circuit, electromagnetism valve actuation
Make execution circuit and include welding current adjusting potentiometer, voltage-stabiliser tube, operational amplifier, switching tube, rifle switching signal device, resistance
First, resistance two, capacitance, diode；One end that 5V power supplys adjust potentiometer with welding current is connect, and welding current adjusts potentiometer
Other end ground connection, welding current adjusts the adjustable side of potentiometer and the anode of operational amplifier connects, operational amplifier it is negative
Anode of the pole respectively with 7 feet of operational amplifier, voltage-stabiliser tube is connect, the cathode of voltage-stabiliser tube respectively with one end of resistance one, two poles
The anode connection of pipe, the cathode of diode are connect with one end of the signaling switch of rifle switching signal device, the other end of signaling switch
The base stage with capacitance, resistance two, switching tube is connect respectively, the emitter of switching tube respectively with the other end of resistance two, capacitance
Other end end connects, and the collector of switching tube and one end of solenoid valve connect, and the other end of solenoid valve is connect with 24V power supplys, rifle
1 foot of switching signal device is connect with 24V power supplys.
Compared with prior art, the beneficial effects of the utility model are：It is self-adaptive controlled to employ protective gas delay time
Circuit processed makes gas delay time according to weldering come Synchronization Control delay time length by welding current given voltage signal
It connects size of current to automatically adjust by a certain percentage, so as to reach best protection effect, while saves gas consumption, simplify artificial behaviour
Make.
Description of the drawings：
For ease of explanation, the utility model is described in detail by following specific implementations and attached drawing.
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the fundamental diagram of the utility model.
Specific embodiment：
To make the objectives, technical solutions and advantages of the present invention clearer, below by showing in attached drawing
Specific embodiment describes the utility model.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit this reality
With novel range.In addition, in the following description, the description to known features and technology is omitted, to avoid unnecessarily mixing
Confuse the concept of the utility model.
As shown in Figure 1 and Figure 2, present embodiment uses following technical scheme：It include welding circuit given circuit,
Voltage conversion circuit, gas delay timing circuit, solenoid valve action executing circuit；Welding circuit given circuit and voltage conversion electricity
Road connects, and voltage conversion circuit connection is connect with gas delay timing circuit, and gas delay timing circuit is held with electromagnetism valve events
Row circuit connects.
Further, the welding circuit given circuit, voltage conversion circuit, gas delay timing circuit, electromagnetism valve actuation
Make execution circuit and include welding current adjusting potentiometer VR1, voltage-stabiliser tube D1, operational amplifier U1, switching tube Q, rifle switching signal
Device, one R1 of resistance, two R of resistance, capacitance C, diode D2；One end that 5V power supplys adjust potentiometer VR1 with welding current is connect, and is welded
The other end ground connection of current regulation potentiometer VR1 is connect, welding current adjusts the adjustable side of potentiometer VR1 with operational amplifier U1's
Anode connects, and the anode of the cathode of operational amplifier U1 respectively with 7 feet of operational amplifier U1, voltage-stabiliser tube D1 is connect, voltage-stabiliser tube
Anode of the cathode of D1 respectively with one end of one R1 of resistance, diode D2 is connect, cathode and the rifle switching signal device of diode D2
Signaling switch K1 one end connection, the other end of signaling switch K1 connects respectively with the base stage of capacitance C, two R of resistance, switching tube Q
Connect, the other end end of the emitter of switching tube Q respectively with the other end of two R of resistance, capacitance C is connect, the collector of switching tube Q with
One end connection of solenoid valve, the other end of solenoid valve are connect with 24V power supplys, and 1 foot of rifle switching signal device is connect with 24V power supplys.
Welding current given circuit：Welding current potentiometer centre cap exports a 0-5V adjustable voltage, passes through resistance
After partial pressure and filter circuit, given voltage Ug and current feedback signal superposition are exported, controls welding current size.In the present invention
In simultaneously Ug simultaneously for controlling the charging voltage of gas delay timing circuit.
Voltage conversion circuit：The given voltage output Ug of given value of current circuit is converted to the charging electricity of gas delay circuit
Press Uc.
Gas delay timing circuit：After welding arc shutdown, the capacitance C of gas delay timing circuit starts to discharge by R,
Through being delayed after a period of time, switching tube Q control pole tensions realize time delayed turn-off gas less than cut-in voltage, switching tube shutdown.
Calculation formula：Delay time t=RC*Ln [(V1-V0)/(V1-Vt)] is wherein：V0 is the initial voltage on capacitance
Value；V1 is the voltage value that capacitance finally can be charged to or be put into；Vt is the voltage value on t moment capacitance.
R*C is fixed constant in this circuit, and V1 is the voltage value that capacitance can be finally put into, and is approximately 0.Vt, that is, switching tube
The cut-in voltage of Q control poles, general metal-oxide-semiconductor are 2.5V and constant, and V0 voltage values change with welding current given voltage Ug.
Therefore different welding current given voltage Ug, corresponding different delay time T.
Solenoid valve action executing circuit：Solenoid valve is powered for DC24, and when switching tube Q is connected, solenoid valve is attracted, switching tube
When Q is turned off, solenoid valve disconnects.
The welding process of present embodiment：
VR1 adjusts potentiometer for welding current, and the output of potentiometer centre cap is welding current given voltage Ug, by fortune
Voltage-stabiliser tube D1 anodes are added to after putting U1 followers.Assuming that Ug is approximately 0 during welding current minimum, potentiometer is adjusted, Ug is from 0~5V
Variation.
Start to weld, K1 is attracted, and 12V passes through R1, and D2 charges to capacitance C, because R1 resistance values are much smaller than R values, after partial pressure
Uc=5V+Ug.When welding current is minimum, UG=0, Uc=5V, when welding current is maximum, Uc=5V+5V=10V.
Since the control pole cut-in voltage of switching tube Q is 2.5V, and UC is 5~10V, therefore Q is connected, and solenoid valve is attracted.
Protective gas delay process：
Stopping welding, rifle switching signal disconnects, and K1 is disconnected, and capacitance C begins through resistance R electric discharges, by delay time t,
When Q control pole tensions are less than cut-in voltage 2.5V, Q shutdowns, solenoid valve disconnects, and gas delay process terminates.
Because the discharge initiation voltage Uc of capacitance C follows welding current potentiometer VR1 (to set two poles from 4.5~9.5V variations
Pipe D2 pressure drops are 0.5V), it was found from RC circuit delay time calculation formula；
T=RC*Ln [(V1-V0)/(V1-Vt)], wherein V1=0, Vt=2.5V, V0=Uc
Obtain t=RC*Ln (Vc/2.5)
During welding current minimum, T=R*C*ln [(0-4.5)/(0-2.5)]=R*C*0.59
During welding current maximum, T=R*C*ln [(0-9.5)/(0-2.5)]=R*C*1.34
1.34/0.59=2.3
From result of calculation as can be seen that time when maximum weld electric current corresponds to gas delay time than minimum welding current
It is 2.3 times big, it is assumed that 200A maximum weld electric currents correspond to gas delay time as 3S, then minimum welding current corresponds to delay time
For 1.3S.Technological requirement can be met, while reduce gas consumption.
In the description of the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " company
Connect ", " fixation " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be
Mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can be specific
Situation understands concrete meaning of the above-mentioned term in the utility model.
The standardized element that the utility model uses can commercially, shaped piece according to specification and attached drawing
Record can carry out customized, the specific connection mode of each part is using bolt ripe in the prior art, rivet, weldering
It connects and waits conventional means, machinery, part and equipment use in the prior art, conventional model, in addition circuit connection is using existing
Conventional connection mode in technology, this will not be detailed here.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned exemplary embodiment, and
And in the case of the spirit or essential attributes without departing substantially from the utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this practicality is new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that by containing in the equivalent requirements of the claims is fallen
All changes in justice and range are embraced therein.Any reference numeral in claim should not be considered as limitation
Involved claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (2)
1. a kind of novel argon arc welding machine protective gas control circuit, it is characterised in that：It includes welding circuit given circuit, voltage
Conversion circuit, gas delay timing circuit, solenoid valve action executing circuit；Welding circuit given circuit connects with voltage conversion circuit
It connects, voltage conversion circuit connection is connect with gas delay timing circuit, and gas delay timing circuit performs electricity with electromagnetism valve events
Road connects.
2. a kind of novel argon arc welding machine protective gas control circuit according to claim 1, it is characterised in that：The welding
Circuit given circuit, voltage conversion circuit, gas delay timing circuit, solenoid valve action executing circuit are adjusted comprising welding current
Potentiometer, voltage-stabiliser tube, operational amplifier, switching tube, rifle switching signal device, resistance one, resistance two, capacitance, diode；5V power supplys
One end that potentiometer is adjusted with welding current is connect, and welding current adjusts the other end ground connection of potentiometer, and welding current adjusts electricity
The adjustable side of position device and the anode of operational amplifier connect, the cathode of operational amplifier respectively with 7 feet of operational amplifier, voltage stabilizing
The anode connection of pipe, the anode of the cathode of voltage-stabiliser tube respectively with one end of resistance one, diode are connect, the cathode and rifle of diode
One end connection of the signaling switch of switching signal device, the other end of signaling switch respectively with capacitance, resistance two, switching tube base stage
Connection, the other end end of the emitter of switching tube respectively with the other end of resistance two, capacitance connects, the collector of switching tube with it is electric
One end connection of magnet valve, the other end of solenoid valve are connect with 24V power supplys, and 1 foot of rifle switching signal device is connect with 24V power supplys.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299096.1U CN207563887U (en) | 2017-10-10 | 2017-10-10 | A kind of novel argon arc welding machine protective gas control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299096.1U CN207563887U (en) | 2017-10-10 | 2017-10-10 | A kind of novel argon arc welding machine protective gas control circuit |
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| CN207563887U true CN207563887U (en) | 2018-07-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732758A (en) * | 2019-10-31 | 2020-01-31 | 南京麦驰钛业有限公司 | argon arc welding gas protection throttling control device |
| CN111014887A (en) * | 2019-12-02 | 2020-04-17 | 深圳市佳士科技股份有限公司 | Welding machine and gas output device control method thereof |
| CN112589236A (en) * | 2019-10-02 | 2021-04-02 | 林肯环球股份有限公司 | Customized shielding gas welding apparatus and method |
-
2017
- 2017-10-10 CN CN201721299096.1U patent/CN207563887U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112589236A (en) * | 2019-10-02 | 2021-04-02 | 林肯环球股份有限公司 | Customized shielding gas welding apparatus and method |
| CN110732758A (en) * | 2019-10-31 | 2020-01-31 | 南京麦驰钛业有限公司 | argon arc welding gas protection throttling control device |
| CN111014887A (en) * | 2019-12-02 | 2020-04-17 | 深圳市佳士科技股份有限公司 | Welding machine and gas output device control method thereof |
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