CN209342790U - A kind of frequency spot welding machine synchronization signal sample circuit - Google Patents
A kind of frequency spot welding machine synchronization signal sample circuit Download PDFInfo
- Publication number
- CN209342790U CN209342790U CN201821697202.6U CN201821697202U CN209342790U CN 209342790 U CN209342790 U CN 209342790U CN 201821697202 U CN201821697202 U CN 201821697202U CN 209342790 U CN209342790 U CN 209342790U
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- CN
- China
- Prior art keywords
- current
- limiting resistance
- synchronization signal
- welding machine
- spot welding
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of frequency spot welding machine synchronization signal sample circuits.It includes two low pressure, input ends, the two lines road of two low pressure, input end connections is respectively arranged with current-limiting resistance R1 and current-limiting resistance R2, current-limiting resistance R1 and current-limiting resistance R2 is attached with an amplifier U1, amplifier U1 is connected with optocoupler U2 after a current-limiting resistance R3 current limliting, and optocoupler U2 is exported after capable of converting signal by output end.After adopting the above structure, so that output result is very accurate, very simple, controller volume is reduced, so that synchronization signal accuracy is very high, controller output control signal is also more accurate, keep welding current precision higher, welding precision is very high, greatly improves welding quality.
Description
Technical field
The utility model relates to a kind of circuit structure of electric welding machine, specifically a kind of frequency spot welding machine synchronization signal is adopted
Sample circuit.
Background technique
It is well known that existing mash welder, must have circuit structure in work, especially existing frequency spot welding machine exists
It is usually worked using alternating current during work, although and existing frequency spot welding machine has and can run for its work
Circuit, but the circuit design of existing circuit structure or synchronization signal is sufficiently complex, so that bulky, occupied space
The design of big or its structure is too simple, and so that output signal is not accurate enough, welding precision is low, thus brings use reliability
Difference, the problem of influencing welding quality.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of circuit structure design is simple, synchronization signal accuracy
Height, so that welding precision is high, the frequency spot welding machine synchronization signal sample circuit that welding quality is effectively ensured.
In order to solve the above-mentioned technical problem, the frequency spot welding machine synchronization signal sample circuit of the utility model, including two
The two lines road of low pressure, input end, two low pressure, input end connections is respectively arranged with current-limiting resistance R1 and current-limiting resistance R2, limits
Leakage resistance R1 and current-limiting resistance R2 is attached with an amplifier U1, and amplifier U1 connects after a current-limiting resistance R3 current limliting
It is connected to optocoupler U2, optocoupler U2 is exported after capable of converting signal by output end.
There is the diode being arranged in parallel between the output end and amplifier U1 of the current-limiting resistance R1 and current-limiting resistance R2
D1 and diode D2.
The output circuit of the output end of the optocoupler U2 passes through a resistance R4 connection circuit board ground line.
The amplifier is LM358 operational amplifier.
The optocoupler U2 is P521 optocoupler.
Two low pressure, input end connections are on the transformer.
After above-mentioned structure, dexterously using current-limiting resistance R1 and current-limiting resistance R2 limitation electricity after being inputted by low pressure
Stream is input to operational amplifier U1, and sine wave signal passes through after amplifier U1, becomes very accurate positive and negative square wave, square wave letter
Number by being changed into the identifiable square-wave signal of chip after current-limiting resistance R3 current limliting and optocoupler U2, so that output result
Very accurate, circuit structure design very simple reduces controller volume, so that synchronization signal accuracy is very high, control
Device output control signal processed is also more accurate, so that welding current precision is higher, welding precision is very high, greatly improves
Welding quality.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model frequency spot welding machine synchronization signal sample circuit.
Specific embodiment
With reference to the accompanying drawings and detailed description, the frequency spot welding machine synchronization signal sample circuit of the utility model is made
It is further described.
As shown, the frequency spot welding machine synchronization signal sample circuit of the utility model, including connecting on the transformer
The two lines road of two low pressure, input ends, two low pressure, input end connections is respectively arranged with current-limiting resistance R1 and current-limiting resistance
R2, current-limiting resistance R1 and current-limiting resistance R2 are attached with a LM358 operational amplifier U1, current-limiting resistance R1 and current-limiting resistance
There is the diode D1 and diode D2 being arranged in parallel, amplifier U1 warp between the output end and LM358 operational amplifier U1 of R2
It is connected with P521 optocoupler after crossing a current-limiting resistance R3 current limliting, P521 optocoupler carries out defeated by output end after capable of converting signal
Out.
Further, the output circuit of the output end of described optocoupler U2 passes through a resistance R4 connection circuit board ground
Line.
Its working principles are as follows:
Alternating current network voltage is changed into 1V input by transformer first, is limited using current-limiting resistance R1 and current-limiting resistance R2
Electric current processed, which is input to LM358 operational amplifier U1, diode D1 and diode D2, to be responsible for operational amplifier input voltage clamper
To safe range, sine wave signal passes through after LM358 operational amplifier U1, becomes very accurate positive and negative 15v square wave, side
Wave signal is changed into the square-wave signal of chip identifiable 5V and 0V after current-limiting resistance R3 current limliting and P521 optocoupler U2.
Claims (6)
1. a kind of frequency spot welding machine synchronization signal sample circuit, it is characterised in that: including two low pressure, input ends, two described low
The two lines road of pressure input terminal connection is respectively arranged with current-limiting resistance R1 and current-limiting resistance R2, the current-limiting resistance R1 and current limliting
Resistance R2 is attached with an amplifier U1, and the amplifier U1 is connected with optocoupler after a current-limiting resistance R3 current limliting
U2, the optocoupler U2 are exported after capable of converting signal by output end.
2. frequency spot welding machine synchronization signal sample circuit described in accordance with the claim 1, it is characterised in that: the current-limiting resistance R1
There is the diode D1 and diode D2 being arranged in parallel between the output end and amplifier U1 of current-limiting resistance R2.
3. frequency spot welding machine synchronization signal sample circuit according to claim 1 or 2, it is characterised in that: the optocoupler U2
Output end output circuit pass through a resistance R4 connection circuit board ground line.
4. frequency spot welding machine synchronization signal sample circuit described in accordance with the claim 3, it is characterised in that: the amplifier is
LM358 operational amplifier.
5. according to frequency spot welding machine synchronization signal sample circuit described in claim 2 or 4, it is characterised in that: the optocoupler U2
For P521 optocoupler.
6. according to frequency spot welding machine synchronization signal sample circuit described in claim 1,2 or 4, it is characterised in that: described in two
Low pressure, input end connects on the transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821697202.6U CN209342790U (en) | 2018-10-18 | 2018-10-18 | A kind of frequency spot welding machine synchronization signal sample circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821697202.6U CN209342790U (en) | 2018-10-18 | 2018-10-18 | A kind of frequency spot welding machine synchronization signal sample circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209342790U true CN209342790U (en) | 2019-09-03 |
Family
ID=67746389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821697202.6U Expired - Fee Related CN209342790U (en) | 2018-10-18 | 2018-10-18 | A kind of frequency spot welding machine synchronization signal sample circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209342790U (en) |
-
2018
- 2018-10-18 CN CN201821697202.6U patent/CN209342790U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190903 Termination date: 20211018 |