CN206316513U - A kind of electric welding machine safety control - Google Patents
A kind of electric welding machine safety control Download PDFInfo
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- CN206316513U CN206316513U CN201621473178.9U CN201621473178U CN206316513U CN 206316513 U CN206316513 U CN 206316513U CN 201621473178 U CN201621473178 U CN 201621473178U CN 206316513 U CN206316513 U CN 206316513U
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- 238000003466 welding Methods 0.000 title claims abstract description 71
- 239000003990 capacitor Substances 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000035945 sensitivity Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of electric welding machine safety control, including contactor and control circuit, the movable end of the wherein primary side switch of contactor connects the welding gun of electric welding machine, the first not moved end connection AC power, second not moved end it is hanging；The second siding ring of contactor is connected with control circuit；For it is short-circuit at welding gun when the not moved end of control contactor primary side switch movable end connection first, at welding gun open circuit and when breaking time exceeds preset time threshold the not moved end of control contactor moved end connection second control circuit.The utility model can be automatically controlled between welding gun and power supply breaking when no longer welding, it is to avoid the suspended voltage that welding gun is carried when stopping weldering is too high and the potential safety hazard brought.
Description
Technical field
The utility model is related to electric welding technical field, more particularly to a kind of electric welding machine safety control.
Background technology
Operationally its secondary voltage is 20V or so to the current A.C. welder still generally used, be to human body it is safe,
When electric welding machine stops welding, welding gun is unloaded, though now no current on welding gun, can produce suspended voltage, this voltage meeting
70~90V is risen to, regulation of the national standard on safe voltage is had been over, is a great potential safety hazard, if electric
Welder inadvertently contacts welding gun, and electric welder can be made to occur numb electrical phenomena, if electric welder now (such as transformer or opens in high-altitude
Close on cabinet) or rainy day progress operation, then it is easy to occur security incident.
Therefore, how providing a kind of security, good electric welding machine safety control is that those skilled in the art need at present
The problem of solution.
Utility model content
The purpose of this utility model is to provide a kind of electric welding machine safety control, when no longer welding, and can control automatically
It is breaking between welding gun and power supply processed, it is to avoid the suspended voltage that welding gun is carried when stopping weldering is too high and the potential safety hazard brought.
In order to solve the above technical problems, the utility model provides a kind of electric welding machine safety control, including contactor
And control circuit, wherein：
The movable end of the primary side switch of the contactor connects the welding gun of the electric welding machine, the first not moved end connection exchange
Power supply, second not moved end it is hanging；The second siding ring of the contactor is connected with the control circuit；
For the contactor primary side switch movable end connection first not moved end to be controlled during short circuit at the welding gun,
Open circuit and the not moved end of contactor moved end connection second is controlled when breaking time exceeds preset time threshold at the welding gun
Control circuit.
Preferably, the control circuit specifically include half-wave rectifying circuit, current transformer, power pack, first can
Variodenser, first switch control element, second switch control element and filter capacitor；
The primary side connection AC power cord of the current transformer, secondary side connects the input of the power pack
End；
The output end of the power pack connects the half-wave rectifying circuit；
The cathode output end of the half-wave rectifying circuit connects first end and the institute of first variable condenser respectively
The emitter stage of second switch control element is stated, the negative input of the half-wave rectifying circuit connects first variable condenser
The second end；
The base stage of the second switch control element connects the second end of first variable condenser, the contact respectively
One end of the second siding ring of device and the base stage of the first switch control element；
The filter capacitor is serially connected between the base stage of the first switch control element and emitter stage；
The colelctor electrode of the first switch control element be connected with the colelctor electrode of the second switch control element after with institute
The positive pole for stating AC power cord is connected.
Preferably, also include：
With the filter capacitor and the first adjustable resistance for connecing；
It is connected between the second end of the base stage of the second switch control element and first variable condenser
Two adjustable resistances；
It is connected on the 3rd adjustable resistance between the cathode output end of the half-wave rectifying circuit and negative input.
Preferably, also including the first electric capacity, the second electric capacity, the second variable condenser, the first diode and the two or two pole
Pipe；
The first end of second electric capacity connects the positive pole of the second of the contactor the not moved end, and the of second electric capacity
Two ends connect the first end of second variable condenser and the negative electrode of first diode respectively；
Second end of second variable condenser connects the anode and first electricity of second diode respectively
The second end held；
The first end of first electric capacity connects the positive pole of the first of the contactor the not moved end；
The anode of first diode connects the base stage of the first switch control element, the moon of second diode
Pole connects the emitter stage of the first switch control element.
The utility model provides a kind of electric welding machine safety control, when short-circuit at welding gun, shows now welding
Connect, control circuit control contactor primary side moved end with first not moved end be connected, welding gun is connected with AC power；In welding gun
When locating breaking and breaking time beyond preset time threshold, show now no longer to weld, control circuit control contactor primary side
Moved end with second not moved end be connected, now welding gun and AC power is separated, therefore there is no voltage on welding gun, so as to avoid
Staff contact by mistake caused by safety problem, improve security during welding.
Brief description of the drawings
, below will be to prior art and embodiment in order to illustrate more clearly of the technical scheme in the utility model embodiment
Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
A kind of structural representation for electric welding machine safety control that Fig. 1 provides for the utility model；
A kind of electrical block diagram for electric welding machine safety control that Fig. 2 provides for the utility model.
Embodiment
Core of the present utility model is to provide a kind of electric welding machine safety control, when no longer welding, and can control automatically
It is breaking between welding gun and power supply processed, it is to avoid the suspended voltage that welding gun is carried when stopping weldering is too high and the potential safety hazard brought.
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
The utility model provides a kind of electric welding machine safety control, and shown in Figure 1, Fig. 1 carries for the utility model
A kind of structural representation of the electric welding machine safety control supplied；The device includes contactor and control circuit, wherein：
The movable end of the primary side switch of contactor connects the welding gun of electric welding machine, the first not moved end connection AC power, the
Two not moved end it is hanging；The second siding ring of contactor is connected with control circuit；
For control contactor primary side to switch the not moved end of movable end connection first during short circuit at welding gun, break at welding gun
The control circuit of the not moved end of control contactor moved end connection second when road and breaking time exceed preset time threshold.
It is understood that there is spot welding during welding, if the open circuit of welding gun one, that is, if disconnecting contactor, can lead
Cause can not carry out spot welding.Need the control contactor disconnection again when breaking time exceeding preset time threshold.During here default
Between threshold value can be 10s, it is of course also possible to which for other values, the utility model is not construed as limiting to this.
It is shown in Figure 2, a kind of circuit structure signal for electric welding machine safety control that Fig. 2 provides for the utility model
Figure.
Specifically, control circuit specifically include half-wave rectifying circuit, current transformer, power pack, first can power transformation
Container, first switch control element, second switch control element and filter capacitor；
The primary side connection AC power cord of current transformer, secondary side connects the input of power pack；
The output end connection half-wave rectifying circuit of power pack；
The cathode output end of half-wave rectifying circuit connects first end and the second switch control of the first variable condenser respectively
The emitter stage of element processed, the negative input of half-wave rectifying circuit connects the second end of the first variable condenser；
The base stage of second switch control element connects the second end of the first variable condenser, the secondary side line of contactor respectively
One end of circle and the base stage of first switch control element；
Filter capacitor is serially connected between the base stage of first switch control element and emitter stage；
The colelctor electrode of first switch control element be connected with the colelctor electrode of second switch control element after with AC power cord
Positive pole be connected.
It is understood that current transformer is for reducing electric current, due to that in welding gun welding process, can produce larger
Electric current, for avoid enter into control circuit electric current it is excessive, it is necessary to current transformer reduce electric current.Power pack is to be used to incite somebody to action
Current signal is changed into voltage signal.Half-wave rectifying circuit is used to alternating current being changed into after direct current to input the first variable capacitance
Device.
When stopping weldering, the first variable condenser can be charged, by the capacitance for pre-adjusting the first variable condenser
Its charging interval can be controlled, it is preset time threshold to make its charging interval, contactor moved end and first motionless in charging process
End connection；After the charging interval is reached, the first variable condenser electric discharge, contactor action, its moved end with second not moved end be connected.
Wherein, the effect of filter capacitor is to be filtered, anti-interference.
In a preferred embodiment, the device also includes：
With filter capacitor and the first adjustable resistance for connecing；
It is connected on the second adjustable electric between the base stage of second switch control element and the second end of the first variable condenser
Resistance；
It is connected on the 3rd adjustable resistance between the cathode output end of half-wave rectifying circuit and negative input.
Wherein, the 3rd adjustable resistance is used for the sensitivity for adjusting circuit.
In a preferred embodiment, the device also includes the first electric capacity, the second electric capacity, the second variable condenser, the one or two pole
Pipe and the second diode；
The positive pole of second not moved end of the first end connection contactor of the second electric capacity, the second end of the second electric capacity is connected respectively
The negative electrode of the first end of second variable condenser and the first diode；
Second end of the second variable condenser connects the anode of the second diode and the second end of the first electric capacity respectively；
The positive pole of first not moved end of the first end connection contactor of the first electric capacity；
The anode of first diode connects the base stage of first switch control element, and the negative electrode connection first of the second diode is opened
Close the emitter stage of control element.
It is understood that when welding gun stops postwelding, the moved end of contactor primary side can with second not moved end be connected；Work as needs
When restarting welding, welding gun meeting short circuit, now contactor can pass through the second electric capacity and back-end circuit forms loop, the second electric capacity
And second variable condenser as corona discharge, now the voltage in the loop is very low, but can trigger the secondary side line of contactor
Circle, make the moved end rebound of contactor primary side with first not moved end be connected, so as to carry out normal weld.
It can be seen that, by foregoing circuit, its moved end need not be artificially adjusted after contactor tripping and is replied and the first not moved end
Be connected, but can the automatic rebound when welding gun is welded again so that the potential safety hazard brought when avoiding manual operation, security
Height, it is easy to operate.
The utility model provides a kind of electric welding machine safety control, when short-circuit at welding gun, shows now welding
Connect, control circuit control contactor primary side moved end with first not moved end be connected, welding gun is connected with AC power；In welding gun
When locating breaking and breaking time beyond preset time threshold, show now no longer to weld, control circuit control contactor primary side
Moved end with second not moved end be connected, now welding gun and AC power is separated, therefore there is no voltage on welding gun, so as to avoid
Staff contact by mistake caused by safety problem, improve security during welding.
It should be noted that in this manual, such as first and second or the like relational terms are used merely to one
Individual entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operate it
Between there is any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Cover including for nonexcludability, so that process, method, article or equipment including a series of key elements not only include those
Key element, but also other key elements including being not expressly set out, or also include for this process, method, article or set
Standby intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in the process including the key element, method, article or equipment.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (4)
1. a kind of electric welding machine safety control, it is characterised in that including contactor and control circuit, wherein：
The movable end of the primary side switch of the contactor connects the welding gun of the electric welding machine, the first not moved end connection alternating current
Source, second not moved end it is hanging；The second siding ring of the contactor is connected with the control circuit；
For controlling the contactor primary side switch movable end connection first not moved end during short circuit at the welding gun, described
Open circuit and the control of the not moved end of contactor moved end connection second is controlled when breaking time exceeds preset time threshold at welding gun
Circuit.
2. device according to claim 1, it is characterised in that the control circuit specifically includes half-wave rectifying circuit, electricity
Current transformer, power pack, the first variable condenser, first switch control element, second switch control element and filtered electrical
Hold；
The primary side connection AC power cord of the current transformer, secondary side connects the input of the power pack；
The output end of the power pack connects the half-wave rectifying circuit；
The cathode output end of the half-wave rectifying circuit connects the first end and described of first variable condenser respectively
The emitter stage of two switch control elements, the negative input of the half-wave rectifying circuit connects the of first variable condenser
Two ends；
The base stage of the second switch control element connects the second end of first variable condenser, the contactor respectively
One end of second siding ring and the base stage of the first switch control element；
The filter capacitor is serially connected between the base stage of the first switch control element and emitter stage；
The colelctor electrode of the first switch control element is handed over after being connected with the colelctor electrode of the second switch control element with described
The positive pole for flowing power line is connected.
3. device according to claim 2, it is characterised in that also include：
With the filter capacitor and the first adjustable resistance for connecing；
Second be connected between the second end of the base stage of the second switch control element and first variable condenser can
Adjust resistance；
It is connected on the 3rd adjustable resistance between the cathode output end of the half-wave rectifying circuit and negative input.
4. the device according to Claims 2 or 3, it is characterised in that also including the first electric capacity, the second electric capacity, second variable
Capacitor, the first diode and the second diode；
The first end of second electric capacity connects the positive pole of the second of the contactor the not moved end, the second end of second electric capacity
The first end of second variable condenser and the negative electrode of first diode are connected respectively；
Second end of second variable condenser connects the anode and first electric capacity of second diode respectively
Second end；
The first end of first electric capacity connects the positive pole of the first of the contactor the not moved end；
The anode of first diode connects the base stage of the first switch control element, and the negative electrode of second diode connects
Connect the emitter stage of the first switch control element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621473178.9U CN206316513U (en) | 2016-12-29 | 2016-12-29 | A kind of electric welding machine safety control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621473178.9U CN206316513U (en) | 2016-12-29 | 2016-12-29 | A kind of electric welding machine safety control |
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| Publication Number | Publication Date |
|---|---|
| CN206316513U true CN206316513U (en) | 2017-07-11 |
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| CN201621473178.9U Active CN206316513U (en) | 2016-12-29 | 2016-12-29 | A kind of electric welding machine safety control |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052528A (en) * | 2016-12-29 | 2017-08-18 | 国网浙江杭州市富阳区供电公司 | A kind of electric welding machine safety control |
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2016
- 2016-12-29 CN CN201621473178.9U patent/CN206316513U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052528A (en) * | 2016-12-29 | 2017-08-18 | 国网浙江杭州市富阳区供电公司 | A kind of electric welding machine safety control |
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