CN2915348Y - Electric welding machine with input voltage self-adaptive circuit - Google Patents
Electric welding machine with input voltage self-adaptive circuit Download PDFInfo
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- CN2915348Y CN2915348Y CN 200620024568 CN200620024568U CN2915348Y CN 2915348 Y CN2915348 Y CN 2915348Y CN 200620024568 CN200620024568 CN 200620024568 CN 200620024568 U CN200620024568 U CN 200620024568U CN 2915348 Y CN2915348 Y CN 2915348Y
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- input voltage
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Abstract
The utility model relates to a welding machine with an input voltage adaptive circuit, belonging to a welding device field, which comprises a welding transformer connected with the two-way controllable silicon current adjustment unit in its primary side loop and is characterized in that the utility model is provided with a power transformer; the primary side of the power transformer and the primary side of the welding transformer are connected with the same voltage-level AC power supply; the primary side of the power transformer is provided with an input voltage identification unit; the output end of the input voltage identification unit is connected with an automatic switching unit; the output end of the automatic switching unit is connected with the pulsed triggering circuit of the two-way controllable silicon current adjustment unit. The voltage automatic identification and the automatic switching circuit are combined with the controllable silicon current adjustment circuit, which makes the AC welding machine have the input voltage adaptive function and avoids the damage of the electric equipments due to connecting with the unknown voltage-level power supply. The utility model can be widely used in the fields of the AC welding machine or various electric tools.
Description
Technical field
The utility model belongs to the welder field, relates in particular to a kind of A.C. welder that is used for arc welding or electric arc cutting.
Background technology
Electric welding machine is a low voltage equipment commonly used in building, manufacturing, the mechanical processing industry.
The operation principle of welding transformer is similar to transformer, is a step-down transformer; The two ends of its primary coil are connected with AC power, at the two ends of its secondary coil is welded part and the welding rod that is clipped on the welding clamp, by the electric arc that ignites between welded part and welding rod, the high temperature that utilizes electric arc becomes one the slit and the welding rod welding of workpiece.
Existing A.C. welder is mainly by shell, welding transformer and its input, output wiring terminal and be connected electrode holders and the cable of welding machine constitutes.
In order to adapt to different ac working power supply voltage, existing A.C. welder normally is provided with different coil taps on the former limit of welding transformer, and above-mentioned tap is caused the binding post that is arranged on the electric welding machine shell, to adapt to different operating voltages.
Because the situation more complicated of job site, the power supply of various electric pressures mixes, and the situation of the different electric pressure power supplys of wrong often takes place.If 380 volts of power supplys are inserted the power device of 220 volts electric pressures, light then make the fuse melting of power device, can cause burning of power device in the time of seriously, influence the welding procedure progress, and bring unnecessary economic loss.
In addition, at the weldment and the welding rod of unlike material, need regulate welding current.
Operating current when welding in order to regulate, existing electric welding machine normally adopts regulates the degree of depth that iron core inserts coil, inductance value by regulating winding, control the size of operating current, this kind technical scheme and improvement thereof have had disclosed in many Chinese patents (as ZL01277019.1, ZL02291754.3, ZL03226346.5 etc.).
The method of above-mentioned adjusting electric current is too extensive, can not realize level and smooth, the step-less adjustment of welding current, and loss is higher, and is unfavorable to reducing the welding procedure cost.
The day for announcing is September 26 calendar year 2001, Granted publication number discloses a kind of novel A.C. welder in the Chinese patent of CN 2449856Y, it comprises housing, iron core, primary coil, secondary coil, at bidirectional triode thyristor current regulating circuit of primary coil top serial connection.Its volume is little, and is in light weight, and it is wide, easy to operate to regulate current range, and good energy-conserving effect is compared with the old type tube electric welding machine, but energy savings 3.27KW/ hour, and can reduce labour intensity greatly during operation.
But there is the deficiency that the electric welding machine welding transformer can not adapt to the power supply of different electric pressures.
The utility model content
Technical problem to be solved in the utility model provides a kind of electric welding machine with input voltage adapting circuit.It can carry out the advantages such as step-less adjustment, efficient energy-saving, machine volume are little welding current except having, and can also adapt to different ac working power supplies automatically, the infringement of having avoided the power supply because of the different electric pressures of wrong that consumer is caused.
The technical solution of the utility model is: a kind of electric welding machine with input voltage adapting circuit is provided, is included in the welding transformer that is serially connected with the bidirectional triode thyristor current adjustment unit in its loop, former limit, it is characterized in that: a power transformer is set; The former limit of power transformer and the former edge joint of welding transformer are on the AC power of same electric pressure; The secondary of power transformer is provided with an input voltage recognition unit; The output of input voltage recognition unit connects with an automatic switch unit; The output of automatic switch unit connects with pulsed triggering circuit in the bidirectional triode thyristor current adjustment unit.
Wherein, above-mentioned input voltage recognition unit comprises a rectification circuit and a pressure-sensitive circuit at least; Above-mentioned automatic switch unit comprises that at least a TURP changes circuit; Above-mentioned pulsed triggering circuit is the resistance-capacitance type oscillating circuit.
Further, the output of its automatic switch unit is serially connected between the pulsed triggering circuit and AC power in the bidirectional triode thyristor current adjustment unit.
Concrete, above-mentioned input voltage recognition unit comprises the pull-in winding K of bridge rectifier UR1, capacitor C 2 and relay; Above-mentioned automatic switch unit comprises output contact K11, K12, K13, resistance R 4 and the R5 of relay; Above-mentioned pulsed triggering circuit comprises adjustable resistance W, resistance R 3, capacitor C 1 and monocrystalline silicone tube D1.
Wherein, secondary T11, the T12 of power transformer T1 are connected with the ac input end 1,2 of bridge rectifier UR1; Between the dc output end 3 and 4 of bridge rectifier UR1 and be connected to the pull-in winding K of capacitor C 2 and relay; The output contact K12 of relay is connected with the end of adjustable resistance W with R5 through resistance R 4 respectively with K13; The other end of adjustable resistance W is connected with an end of alternating current input power supplying; The output contact K11 of relay is connected with the end of capacitor C 1 with monocrystalline silicone tube D1 through resistance R 3; The other end of capacitor C 1 is connected with the other end of alternating current input power supplying; The other end of monocrystalline silicone tube D1 is connected with the control utmost point of bidirectional triode thyristor SCR.
Compared with the prior art, the utility model has the advantages that:
Employing automatic identification of voltage and automatic switch-over circuit thereof combine with the bidirectional triode thyristor current regulating circuit, make A.C. welder have the function of input voltage adapting, avoided the infringement that causes because of the power supply that inserts not clear electric pressure consumer.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the line map of the utility model embodiment.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Among Fig. 1, a power transformer is set; The former limit of power transformer and the former edge joint of welding transformer are on the AC power of same electric pressure; The secondary of power transformer is provided with an input voltage recognition unit; The output of input voltage recognition unit connects with an automatic switch unit; The output of automatic switch unit connects with pulsed triggering circuit in the bidirectional triode thyristor current adjustment unit.
Wherein, above-mentioned input voltage recognition unit comprises a rectification circuit and a pressure-sensitive circuit at least; Above-mentioned automatic switch unit comprises that at least a TURP changes circuit; Above-mentioned pulsed triggering circuit is the resistance-capacitance type oscillating circuit.
Further, the output of its automatic switch unit is serially connected between the pulsed triggering circuit and AC power in the bidirectional triode thyristor current adjustment unit.
Among Fig. 2, the input voltage recognition unit comprises the pull-in winding K of bridge rectifier UR1, capacitor C 2 and relay; Automatic switch unit comprises output contact K11, K12, K13, resistance R 4 and the R5 of relay; Pulsed triggering circuit comprises adjustable resistance W, resistance R 3, capacitor C 1 and monocrystalline silicone tube D1.
Wherein, secondary T11, the T12 of power transformer T1 are connected with the ac input end 1,2 of bridge rectifier UR1; Between the dc output end 3 and 4 of bridge rectifier UR1 and be connected to the pull-in winding K of capacitor C 2 and relay; The output contact K12 of relay is connected with the end of adjustable resistance W with R5 through resistance R 4 respectively with K13; The other end of adjustable resistance W is connected with an end of alternating current input power supplying; The output contact K11 of relay is connected with the end of capacitor C 1 with monocrystalline silicone tube D1 through resistance R 3; The other end of capacitor C 1 is connected with the other end of alternating current input power supplying; The other end of monocrystalline silicone tube D1 is connected with the control utmost point of bidirectional triode thyristor SCR.
The summary of the utility model course of work:
By suitable power transformer secondary output voltage is set, under the situation of 220/110 volt of input voltage, so that the relay K adhesive, then the series resistor in the pulsed triggering circuit of bidirectional triode thyristor current adjustment unit is W, R4 and R3 through the output voltage deficiency of bridge rectifier output; When input voltage was 380 volts, the output voltage of process bridge rectifier output made the relay K adhesive, and then the series resistor in the pulsed triggering circuit of bidirectional triode thyristor current adjustment unit is W, R5 and R3; By difference according to input voltage, the automatic size of the resistance value in the regulating impulse circuits for triggering (being a resistance-capacitance type oscillating circuit in fact), and then change the output characteristics of pulsed triggering circuit, reached the goal of the invention of the different input voltages of automatic adaptation.
Concrete enforcement of the present utility model is not limited only to the concrete line construction in the foregoing description, as those skilled in the art, fully can be on the basis of having understood and grasped the technical program main points, employing has the circuit or the module of identical or similar functions, constitutes because A.C. welder or various electric tool circuit or device (as electric slicer, electric wheel, electric drill etc.), that have said function.
The utility model can be widely used in A.C. welder or various field of power tools.
Claims (6)
1. the electric welding machine with input voltage adapting circuit is included in the welding transformer that is serially connected with the bidirectional triode thyristor current adjustment unit in its loop, former limit, it is characterized in that:
One power transformer is set;
The former limit of power transformer and the former edge joint of welding transformer are on the AC power of same electric pressure;
The secondary of power transformer is provided with an input voltage recognition unit;
The output of input voltage recognition unit connects with an automatic switch unit;
The output of automatic switch unit connects with pulsed triggering circuit in the bidirectional triode thyristor current adjustment unit.
2. according to the described electric welding machine of claim 1, it is characterized in that described input voltage recognition unit comprises a rectification circuit and a pressure-sensitive circuit at least with input voltage adapting circuit.
3. according to the described electric welding machine of claim 1, it is characterized in that described automatic switch unit comprises that at least a TURP changes circuit with input voltage adapting circuit.
4. according to the described electric welding machine of claim 1, it is characterized in that described pulsed triggering circuit is the resistance-capacitance type oscillating circuit with input voltage adapting circuit.
5. according to the described electric welding machine with input voltage adapting circuit of claim 1, the output that it is characterized in that described automatic switch unit is serially connected between the pulsed triggering circuit and AC power in the bidirectional triode thyristor current adjustment unit.
6. according to claim 1,2,3,4 or 5 described electric welding machines, it is characterized in that described input voltage recognition unit comprises the pull-in winding K of bridge rectifier UR1, capacitor C 2 and relay with input voltage adapting circuit; Described automatic switch unit comprises output contact K11, K12, K13, resistance R 4 and the R5 of relay; Described pulsed triggering circuit comprises adjustable resistance W, resistance R 3, capacitor C 1 and monocrystalline silicone tube D1; Wherein,
Secondary T11, the T12 of power transformer T1 is connected with the ac input end of bridge rectifier UR1 1,2;
Between the dc output end 3 and 4 of bridge rectifier UR1 and be connected to the pull-in winding K of capacitor C 2 and relay;
The output contact K12 of relay is connected with the end of adjustable resistance W with R5 through resistance R 4 respectively with K13;
The other end of adjustable resistance W is connected with an end of alternating current input power supplying;
The output contact K11 of relay is connected with the end of capacitor C 1 with monocrystalline silicone tube D1 through resistance R 3;
The other end of capacitor C 1 is connected with the other end of alternating current input power supplying;
The other end of monocrystalline silicone tube D1 is connected with the control utmost point of bidirectional triode thyristor SCR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024568 CN2915348Y (en) | 2006-05-29 | 2006-05-29 | Electric welding machine with input voltage self-adaptive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620024568 CN2915348Y (en) | 2006-05-29 | 2006-05-29 | Electric welding machine with input voltage self-adaptive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2915348Y true CN2915348Y (en) | 2007-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620024568 Expired - Fee Related CN2915348Y (en) | 2006-05-29 | 2006-05-29 | Electric welding machine with input voltage self-adaptive circuit |
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| CN (1) | CN2915348Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944765A (en) * | 2010-11-04 | 2011-01-12 | 深圳市华意隆实业发展有限公司 | Dual-power automatic switching control device for electric welder |
| CN102079002A (en) * | 2011-01-26 | 2011-06-01 | 深圳华意隆电气股份有限公司 | Inverter welding and cutting machine with dual-voltage system |
| CN103221172A (en) * | 2011-10-05 | 2013-07-24 | 松下电器产业株式会社 | Welding machine |
| CN104600964A (en) * | 2013-10-31 | 2015-05-06 | 通用电气公司 | Voltage adapter system used in device |
| CN108994428A (en) * | 2018-08-03 | 2018-12-14 | 单超 | A kind of current regulator |
-
2006
- 2006-05-29 CN CN 200620024568 patent/CN2915348Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101944765A (en) * | 2010-11-04 | 2011-01-12 | 深圳市华意隆实业发展有限公司 | Dual-power automatic switching control device for electric welder |
| CN102079002A (en) * | 2011-01-26 | 2011-06-01 | 深圳华意隆电气股份有限公司 | Inverter welding and cutting machine with dual-voltage system |
| CN103221172A (en) * | 2011-10-05 | 2013-07-24 | 松下电器产业株式会社 | Welding machine |
| CN103221172B (en) * | 2011-10-05 | 2015-03-18 | 松下电器产业株式会社 | Welding machine |
| CN104600964A (en) * | 2013-10-31 | 2015-05-06 | 通用电气公司 | Voltage adapter system used in device |
| CN108994428A (en) * | 2018-08-03 | 2018-12-14 | 单超 | A kind of current regulator |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |