CN103722275A - Energy-saving electric welding machine - Google Patents
Energy-saving electric welding machine Download PDFInfo
- Publication number
- CN103722275A CN103722275A CN201310638712.1A CN201310638712A CN103722275A CN 103722275 A CN103722275 A CN 103722275A CN 201310638712 A CN201310638712 A CN 201310638712A CN 103722275 A CN103722275 A CN 103722275A
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- Prior art keywords
- coil
- relay
- energy
- welding machine
- transformer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
- B23K9/1056—Power supply characterised by the electric circuit by using digital means
- B23K9/1062—Power supply characterised by the electric circuit by using digital means with computing means
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
The invention discloses an energy-saving electric welding machine, and belongs to the field of electrical arc welding devices. The energy-saving electric welding machine comprises a primary coil and a secondary coil, and is characterized by further comprising a PLC, a starting circuit, a voltage detection circuit and a relay KM. The starting circuit comprises a first alternating-current transformer, and the secondary side of the first alternating-current transformer is connected with the secondary coil. The voltage detection circuit comprises a second alternating-current transformer, the primary side of the second alternating-current transformer is connected with the secondary coil, the secondary side of the second alternating-current transformer provides working power for a rectifier bridge, and the output end of the rectifier bridge provides a control signal for the PLC. A coil power source of the relay KM is controlled by the PLC, and a power source of the primary coil is controlled by a normally-open contact of the relay KM. According to the energy-saving electric welding machine, the defects caused by damage of a time relay are overcome, and meanwhile coil heating and copper losses of the energy-saving electric welding machine are reduced.
Description
Technical field
The invention belongs to arc-welding equipment field, be specifically related to a kind of energy-saving electric welder.
Background technology
BX type electric welding machine, owing to having advantages of that cost is low, durability good, is widely used in vast industrial enterprise.This kind of electric welding machine do not do work during because of zero load, and the own heating of exciting current and electric welding machine but will consume more electric energy, causes idle time longer, the more phenomenons of waste electric energy.
Application number is that 200510122873.0 Chinese patent discloses a kind of energy-saving apparatus for welding machine, its primary side at electric welding machine increases control transformer, two secondary outputs of control transformer are respectively start-up circuit and work operation circuit provides working power, work operation circuit comprises rectifier bridge, the coil that rectifier bridge is output as auxiliary reclay KA2 and time relay KT1 provides working power, utilize the duty of current detection circuit control time relay, then by auxiliary reclay KA2, control the duty of AC relay KM, thereby control the working power of electric welding machine primary side.When electric welder no-load, cut off the working power of its primary side, reach the object of economize on electricity.
But, in the process of electric welder no-load, the time relay always in electricity condition, on the one hand, although the electric energy of its consumption is much smaller during than electric welder no-load, to consume after all a part of electric energy; On the other hand, because the coil current of the time relay increases, work in long-time, coil temperature raises, and punctures insulating barrier coil and burns out, and causes the time relay not to be durable.When the coil of the time relay is destroyed, auxiliary reclay KA2 and relay K A1 form interlocking state, and electric welding machine can be in two states: a kind of for not working, cause maintenance cost cost up; Another kind of is power saving operation state not, does not have energy-saving effect completely.
Visible, the less stable of this kind of node apparatus.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of energy-saving electric welder, can save reliably electric energy.
For solving the problems of the technologies described above, technical scheme of the present invention is: invent a kind of energy-saving electric welder, comprise primary coil and secondary coil, it is characterized in that: also comprise PLC controller, start-up circuit, voltage detecting circuit and relay K M;
Start-up circuit comprises the first AC transformer, and primary side and the secondary coil of the first AC transformer are connected;
Voltage detecting circuit comprises the second AC transformer, and primary side and the secondary coil of the second AC transformer is connected, primary side provides working power for rectifier bridge, and the output of rectifier bridge provides control signal for PLC controller;
The coil power of PLC controller control relay KM, the power supply of the normally opened contact control primary coil of relay K M.
Preferably, the power supply of normally-closed contact control the first AC transformer of relay K M.
Preferably, be also provided with auxiliary reclay KA, the coil power of PLC controller control auxiliary reclay KA, PLC controller is according to the coil power of the normally-closed contact state control relay KM of auxiliary reclay KA.
Preferably, the primary side of normally opened contact control the first AC transformer of auxiliary reclay KA and the break-make of secondary coil.
Compared with prior art, the invention has the beneficial effects as follows:
Because utilizing formula PLC controller able to programme, the present invention according to the voltage signal of electric welding machine second coil side, controls the break-make of electric welding machine primary side power supply, thereby replaced the time relay of the prior art, avoided because the time relay damages the drawback of bringing; The coil heating and the copper loss that have reduced electric welding machine alleviate electric welding machine maintenance cost simultaneously, extend stream time and service life.
Accompanying drawing explanation
Fig. 1 is electrical schematic diagram of the present invention.
Mark in figure: 1, primary coil; 2, secondary coil; 3, the first AC transformer; 4, the second AC transformer; 5, rectifier bridge; 6, PLC controller.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the present invention is described in further detail.
In order to improve the stability of electric welding machine, also be provided with auxiliary reclay KA, PLC controller 6 is controlled the coil power of auxiliary reclay KA, the normally-closed contact of auxiliary reclay KA is connected to the input of PLC controller 6, make PLC controller 6 according to the coil power of this signal control relay KM, the normally opened contact of auxiliary reclay KA is serially connected in the primary side of the first AC transformer 3 and the loop of secondary coil 2, to control the break-make in this loop.
The specification of above-mentioned the first AC transformer 3 can be 20V/24V, the specification of the second AC transformer 4 can be 220V/12V, can also select other specification, as long as can meet the running parameter of analog-to-digital conversion module in PLC controller 6 after over commutation, require.
Operation principle of the present invention and the course of work are as follows:
Connect the working power of PLC controller 6, PLC controller 6 is connected the coil power of auxiliary reclay KA, its normally opened contact closure, normally-closed contact disconnects,～220V power supply is connected the primary side of the first AC transformer 3 by the normally-closed contact of relay K M, enter the secondary coil 2 of electric welding machine after transformation, and the secondary voltage of electric welding machine is sent into the second AC transformer 4, after rectifier bridge 5 rectifications, obtain the adjustable voltage between 0-10V, send into the A/D module of PLC controller 6.When needs electric welding machine is worked, operating personnel by welding rod and weldment short circuit once, the secondary voltage of electric welding machine is reduced to 30V left and right, after rectifier bridge 5 rectifications, analog quantity voltage decreases, PLC controller 6 carries out analog-to-digital conversion, when dropping to setting numerical value, PLC controller 6 disconnects the coil power of auxiliary reclay KA, the normally opened contact of auxiliary reclay KA transfers disconnection to by closure state, normally-closed contact transfers closure to by off-state, PLC controller 6 detects the coil switch power of control relay KM after this signal, its normally opened contact closure, connect the power supply of electric welding machine primary coil 1, electric welding machine is normally worked, the normally-closed contact of relay K M transfers disconnection to by closure state simultaneously, cuts off the power supply of the first AC transformer 3 primary sides, has avoided the heating power consumption of the first AC transformer 3.In whole welding process, the secondary voltage of electric welding machine is in 30V left and right, and PLC controller 6 maintains the coil of relay K M in obtaining electricity condition always, and its normally opened contact, in attracting state, normally works electric welding machine.When welding rod and weldment be not during short circuit, the secondary voltage of electric welding machine is by returning between 50-90V, when exceeding the time of PLC controller 6 inner settings, PLC controller 6 disconnects the coil power of relay K M, its normally opened contact transfers disconnection to by closure state, normally-closed contact transfers closure to by off-state, connects the coil power of auxiliary reclay KA simultaneously, for electric welding machine is normally worked ready next time.
The above, it is only preferred embodiment of the present invention, be not the restriction of the present invention being made to other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be combined, change or retrofit and be equivalent embodiment of the present invention.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (4)
1. an energy-saving electric welder, comprises primary coil and secondary coil, it is characterized in that: also comprise PLC controller, start-up circuit, voltage detecting circuit and relay K M;
Start-up circuit comprises the first AC transformer, and primary side and the secondary coil of the first AC transformer are connected;
Voltage detecting circuit comprises the second AC transformer, and primary side and the secondary coil of the second AC transformer is connected, primary side provides working power for rectifier bridge, and the output of rectifier bridge provides control signal for PLC controller;
The coil power of PLC controller control relay KM, the power supply of the normally opened contact control primary coil of relay K M.
2. according to energy-saving electric welder claimed in claim 1, it is characterized in that: the power supply of normally-closed contact control the first AC transformer of relay K M.
3. according to energy-saving electric welder claimed in claim 2, it is characterized in that: be also provided with auxiliary reclay KA, the coil power of PLC controller control auxiliary reclay KA, PLC controller is according to the coil power of the normally-closed contact state control relay KM of auxiliary reclay KA.
4. according to energy-saving electric welder claimed in claim 3, it is characterized in that: the primary side of normally opened contact control the first AC transformer of auxiliary reclay KA and the break-make of secondary coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310638712.1A CN103722275A (en) | 2013-12-04 | 2013-12-04 | Energy-saving electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310638712.1A CN103722275A (en) | 2013-12-04 | 2013-12-04 | Energy-saving electric welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103722275A true CN103722275A (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310638712.1A Pending CN103722275A (en) | 2013-12-04 | 2013-12-04 | Energy-saving electric welding machine |
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| CN (1) | CN103722275A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785873A (en) * | 2017-12-06 | 2018-03-09 | 珠海格力电器股份有限公司 | Voltage protection circuit, method and the Switching Power Supply of Switching Power Supply |
Citations (7)
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| JPH11254135A (en) * | 1998-03-10 | 1999-09-21 | Matsushita Electric Ind Co Ltd | Ac arc welding machine |
| CN1810431A (en) * | 2005-12-06 | 2006-08-02 | 仇九桃 | Power economizer for electric welder |
| CN201183159Y (en) * | 2008-05-01 | 2009-01-21 | 于东春 | Electric welding machine idle load automatic electricity economizer |
| CN201266831Y (en) * | 2008-08-26 | 2009-07-01 | 广州（从化）亨龙机电制造实业有限公司 | Protection equipment for transformer of resistance welder |
| CN101927393A (en) * | 2009-06-23 | 2010-12-29 | 上海沪工电焊机制造有限公司 | Control circuit of electric welder |
| CN101969189A (en) * | 2010-11-25 | 2011-02-09 | 煤炭科学研究总院重庆研究院 | Input over-voltage protection device of frequency converter |
| CN203636176U (en) * | 2013-12-04 | 2014-06-11 | 山东金阳矿业集团有限公司 | Energy-saving electric welding machine |
-
2013
- 2013-12-04 CN CN201310638712.1A patent/CN103722275A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11254135A (en) * | 1998-03-10 | 1999-09-21 | Matsushita Electric Ind Co Ltd | Ac arc welding machine |
| CN1810431A (en) * | 2005-12-06 | 2006-08-02 | 仇九桃 | Power economizer for electric welder |
| CN201183159Y (en) * | 2008-05-01 | 2009-01-21 | 于东春 | Electric welding machine idle load automatic electricity economizer |
| CN201266831Y (en) * | 2008-08-26 | 2009-07-01 | 广州（从化）亨龙机电制造实业有限公司 | Protection equipment for transformer of resistance welder |
| CN101927393A (en) * | 2009-06-23 | 2010-12-29 | 上海沪工电焊机制造有限公司 | Control circuit of electric welder |
| CN101969189A (en) * | 2010-11-25 | 2011-02-09 | 煤炭科学研究总院重庆研究院 | Input over-voltage protection device of frequency converter |
| CN203636176U (en) * | 2013-12-04 | 2014-06-11 | 山东金阳矿业集团有限公司 | Energy-saving electric welding machine |
Non-Patent Citations (1)
| Title |
|---|
| 黄晓林等: "一种交流电焊机节能保护控制器的设计", 《工业控制计算机》, vol. 25, no. 8, 31 August 2012 (2012-08-31), pages 120 - 121 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785873A (en) * | 2017-12-06 | 2018-03-09 | 珠海格力电器股份有限公司 | Voltage protection circuit, method and the Switching Power Supply of Switching Power Supply |
| CN107785873B (en) * | 2017-12-06 | 2023-07-04 | 珠海格力电器股份有限公司 | Voltage protection circuit and method of switching power supply and switching power supply |
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Application publication date: 20140416 |