CN201669505U - Multifunctional plasma arc welding machine based on PLC controller - Google Patents
Multifunctional plasma arc welding machine based on PLC controller Download PDFInfo
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- CN201669505U CN201669505U CN2010201943876U CN201020194387U CN201669505U CN 201669505 U CN201669505 U CN 201669505U CN 2010201943876 U CN2010201943876 U CN 2010201943876U CN 201020194387 U CN201020194387 U CN 201020194387U CN 201669505 U CN201669505 U CN 201669505U
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Abstract
The utility model discloses a multifunctional plasma arc welding machine based on a PLC controller, which comprises a welding power supply, a control cabinet, an operation box, a welding gun, an electromagnetic gas valve, a water flow detector, a water source and a gas source. The water source is connected with the control cabinet by the water flow detector. The gas source is connected with the control cabinet by the electromagnetic gas valve. The control cabinet is also connected with the welding power supply, the operation box and the welding gun. The multifunctional plasma arc welding machine is convenient for overhauling and maintenance of equipment, improves performance of the equipment to a large extent and improves reliability of operation of the equipment.
Description
Technical field
The utility model relates to a kind of plasma arc welder, particularly a kind of multi-functional plasma arc welder based on PLC (Programmable Logic Controller, programmable logic controller (PLC)) controller.
Background technology
Plasma arc welding method is that to utilize the welding torch of special construction that electric arc is compressed into cylindrical, characteristics such as make that it has that arc energy is concentrated, arc temperature and penetration power are strong.At square groove, need not add and fill silk and need under the condition that back of weld adds the cushions, once can not weld the sheet material of thickness below 8 millimeters, and can double-faced forming.And the formation of tungsten argon arc welding method is simpler and convenient than plasma arc welding method, and electric arc is free electric arc, and is tapered, the energy of electric arc is not too concentrated, and temperature is also lower, the thin plate that it once can only through welding thickness below 3 millimeters, but its torch structure is simpler, operates also more convenient.In addition, also available GTAW connects method and does the manual operations welding.
But these three kinds of used welding equipments of welding method all were to occur with independent form in the past, if the sheet material of welding different-thickness then needs to order dissimilar welding machines; If run into weld seam in irregular shape, weldering can't be operated automatically, also need select manual welding machine else and finish, and this is a common occurrence in the welding occasion.The producer's idol that has has the equipment of migrating mutually, but traditional analog circuit has been used in control, the circuit complexity, and quality problems are more.
The utility model content
Technical problem to be solved in the utility model provides a kind of multi-functional plasma arc welder based on the PLC controller, and maintenance and maintenance that it makes things convenient for equipment have improved the performance of equipment to a great extent, have improved the equipment reliability of operation.
For solveing the technical problem, the utility model provides a kind of multi-functional plasma arc welder based on the PLC controller, it comprises the source of welding current, switch board, control box, welding gun, electromagnetic gas valve, water flow detector, water source, source of the gas, the water source is connected with switch board by water flow detector, source of the gas is connected with switch board by electromagnetic gas valve, and switch board also is connected with the source of welding current, control box, welding gun.
Preferably, described control box comprises interconnective guidance panel and motor-driven plate.
Preferably, described switch board comprises Current Control plate, PLC controller, and the Current Control plate is connected with the PLC controller.
Positive progressive effect of the present utility model is: the utility model places an equipment with three kinds of welding methods, and uses the PLC controller to control, and different welding methods is only changed one and can be finished welding torch, thereby realizes the purpose of a tractor serves several purposes.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
The specific embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
Welding machine of the prior art all occurs with simple function, can not be general mutually, and this has just limited the scope of application of equipment.But these three kinds of welding methods (being that plasma arc welding method, automatic tungsten anode argon arc welding connect method and GTAW connects method) have its common characteristic: at first, it is that the rectifier type power supply with dropping characteristic curve---contravariant or thyristor type can that the used source of welding current of these three kinds of welding methods all requires; Secondly, all need argon gas to make protection gas, thereby all need the function of pass gas of supplying gas in advance and lag behind, and need have gas flow can regulate and Presentation Function; Secondly be that welding torch all need have circulating water cooling device again; Also have them that contactless arc initiation device must be arranged.Between their threes some difference are arranged also, for example plasma arc welding method needs first striking, change arc again and can set up normal plasma arc, the electric arc and the argon arc welding method is directly ignited, and manual argon arc welding connects method and has more omitted the welding gun walking mechanism and filled silk device, operates more simple.Difference on these operation programs has solved very easily by the programmable of the programmable controller in the control system, and control system also so greatly simplifies, and has more improved reliability of system operation.And torch structure is different, then connects by different interfaces.Like this, three kinds of welding methods just combine in the equipment very easily.For the welding applying unit, the material of welding different-thickness is a common occurrence, and welding equipment of the present utility model just provides convenience for this reason and enlarged the scope of application of equipment.
As shown in Figure 1, the utility model adopts separated structure and comprises the source of welding current, switch board, control box, welding gun, electromagnetic gas valve, water flow detector, water source, source of the gas based on the multi-functional plasma arc welder of PLC controller, the water source is connected with switch board by water flow detector, source of the gas is connected with switch board by electromagnetic gas valve, and switch board also is connected with the source of welding current, control box, welding gun.Welding machine electric power comprises interconnective three-phase controllable silicon rectifier bridge and transformer, and welding machine electric power can provide 20 to 315 amperes of continuously adjustable electric currents.Switch board comprises Current Control plate, PLC controller, and the Current Control plate is connected with the PLC controller.Control box comprises interconnective guidance panel and motor-driven plate.
Wherein, the anode of the source of welding current of Access Control cabinet inserts ammeter in order to detect the welding current of welding machine through outer attached current divider, insert main contactor then, an end of main contactor is in order to connect the work end of argon arc welding, and the other end is in order to connect the work end of plasma welding.The control of main contactor is jointly controlled by Current Control plate and PLC controller.The negative terminal of the power supply of Access Control cabinet inserts the tungsten electrode rod of welding gun through the high-frequency arc strike coil, forms main welding circuit with the workpiece of the anode of connecting with the mains.The Current Control plate is responsible for controlling the decay of gas and the decay of electric current.Aspect source of the gas, adopt two independently gas cylinder air feed during PLASMA ARC WELDING, one bottle as basic ion gas; one bottle as protection gas; exit at gas cylinder is separately installed with gas pressure reducer, and air-flow is stable during in order to the assurance welding, the unlikely shaping that influences weld seam.
The PLC controller possesses following function as control core of the present utility model: one, be responsible for the startup of the source of welding current; Two, the switch of control main contactor and hf arc starter; Three, be responsible for the SECO of multipath gas; Four, the start and stop of control dolly and wire-feed motor; Five, provide the current attenuation signal for the Current Control plate; Six, man machine communication interface: accept outside signal input, and output shows.
The concrete control procedure of PLC controller is as follows:
At first, behind the unlatching source of welding current, connect cooling water tank, water flow switch sends to the PLC controller after detecting water-flow signal, and the PLC controller begins operate as normal.
Press " striking " button this moment, basic ion air valve and ion air valve are connected in advance, the source of welding current is promptly exported about 70V floating voltage after delaying time, the PLC controller starts hf arc starter simultaneously, between tungsten electrode rod and torch neck, produce high-frequency spark, the little arc that ignites, after little arc was set up, high frequency cut off voluntarily;
Next press " welding " button, the PLC controller output signal is connected protection gas in advance; after the time-delay through regulation; the PLC controller starts main contactor, and main welding circuit is connected, and the ion gas of the tungsten electrode rod of flowing through under the effect of principal voltage ionization takes place; between tungsten electrode rod and workpiece, form main arc; this moment, main arc was in case set up the little arc of cut-out loop behind the PLC delaying time of controller 0.6S, the pre-heated work pieces of electric arc; the time delays walking that dolly is default according to " time relay " begins welding.Fill silk if desired, place the welding position to get final product automatic feeding with " wire feed selector switch ", speed can be regulated voluntarily.
Press " stopping " button when welding finishes after, the PLC controller sends cut-off signals for immediately Current Control plate and ion air valve.Ion gas is because of through air accumulator, and after cutting off steam supply valve, air-flow begins decay; After the Current Control plate received the cut-off signals of PLC controller simultaneously, output signal began the predetermined speed decay.Main welding arc is under the situation that air-flow and electric current are decayed simultaneously, and electric arc begins slowly to reduce.The speed of current attenuation can set in advance, when treating that minimum of a value is arrived in current attenuation, and arc extinction, basic ion gas and protection gas are with time-delay closing, and is not oxidized in order to protection tungsten electrode and last one face of weld.
If need for some reason to shut down, can press " scram button " midway in the process of welding, the PLC controller turn-offs the source of welding current at once; welding current is cut off immediately; but protection gas and ionized gas are still kept a period of time, close after the time-delay, with the safety of assurance equipment and workpiece.
Argon arc welding has same operating function, has just removed little arc control procedure, can enter normal main arc welding process behind high-frequency arc strike.In the time will using the manual welding operation also is same principle.After functional switch switching on the switch board, the PLC controller will carry out work by the program of setting.
Control technology in the past all will lean on traditional transistor circuit to drive electromagnetic relay, because control procedure is many, makes that the circuit complexity is loaded down with trivial details, occurs quality problems easily, and accurate inadequately in the processing of delay time.
The most outstanding advantage of the present utility model is to adopt the PLC controller; it is the control maincenter of this equipment; the PLC controller mainly is responsible for the break-make control of plasma gas and protective gas, the control of the start and stop control supervisor of the start and stop control of the source of welding current and welding tractor, wire-feed motor.Delay time control has accurately been simplified ancillary equipment, has optimized control logic, makes things convenient for the maintenance and the maintenance of equipment, has improved the performance of equipment to a great extent, has improved the equipment reliability of operation.The function of a tractor serves several purposes is provided simultaneously, has reduced production cost.In addition, this device structure is flexible, can be according to producing the more powerful annex of needs configuration.
Though more than described the specific embodiment of the present utility model, but those skilled in the art is to be understood that, these only illustrate, and under the prerequisite that does not deviate from principle of the present utility model and essence, can make numerous variations or modification to these embodiments.Therefore, protection domain of the present utility model is limited by appended claims.
Claims (3)
1. multi-functional plasma arc welder based on the PLC controller, it is characterized in that, it comprises the source of welding current, switch board, control box, welding gun, electromagnetic gas valve, water flow detector, water source, source of the gas, the water source is connected with switch board by water flow detector, source of the gas is connected with switch board by electromagnetic gas valve, and switch board also is connected with the source of welding current, control box, welding gun.
2. the multi-functional plasma arc welder based on the PLC controller as claimed in claim 1 is characterized in that described control box comprises interconnective guidance panel and motor-driven plate.
3. the multi-functional plasma arc welder based on the PLC controller as claimed in claim 1 is characterized in that described switch board comprises Current Control plate, PLC controller, and the Current Control plate is connected with the PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201943876U CN201669505U (en) | 2010-05-14 | 2010-05-14 | Multifunctional plasma arc welding machine based on PLC controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201943876U CN201669505U (en) | 2010-05-14 | 2010-05-14 | Multifunctional plasma arc welding machine based on PLC controller |
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| Publication Number | Publication Date |
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| CN201669505U true CN201669505U (en) | 2010-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201943876U Expired - Lifetime CN201669505U (en) | 2010-05-14 | 2010-05-14 | Multifunctional plasma arc welding machine based on PLC controller |
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| CN (1) | CN201669505U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174982A (en) * | 2014-07-31 | 2014-12-03 | 佛山中用自动化装备有限公司 | Plasma/argon-arc welding machine system and control method |
| CN104889551A (en) * | 2015-06-15 | 2015-09-09 | 济南大学 | Electric current and gas control system and method of fine plasma cutting machine |
| CN104959720A (en) * | 2015-07-24 | 2015-10-07 | 上海沪工焊接集团股份有限公司 | Sequential control method for air plasma cutter |
| CN109108432A (en) * | 2017-06-26 | 2019-01-01 | 武汉理工大学 | Multifunctional welding machine controller based on PLC |
| CN110026665A (en) * | 2019-05-07 | 2019-07-19 | 吴忠市黄河电焊机有限公司 | A kind of digital multifunctional power supply based on plasma arc technology |
-
2010
- 2010-05-14 CN CN2010201943876U patent/CN201669505U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174982A (en) * | 2014-07-31 | 2014-12-03 | 佛山中用自动化装备有限公司 | Plasma/argon-arc welding machine system and control method |
| CN104174982B (en) * | 2014-07-31 | 2016-05-11 | 佛山中用自动化装备有限公司 | A kind of plasma/argon arc welding welder system and control method |
| CN104889551A (en) * | 2015-06-15 | 2015-09-09 | 济南大学 | Electric current and gas control system and method of fine plasma cutting machine |
| CN104959720A (en) * | 2015-07-24 | 2015-10-07 | 上海沪工焊接集团股份有限公司 | Sequential control method for air plasma cutter |
| CN109108432A (en) * | 2017-06-26 | 2019-01-01 | 武汉理工大学 | Multifunctional welding machine controller based on PLC |
| CN110026665A (en) * | 2019-05-07 | 2019-07-19 | 吴忠市黄河电焊机有限公司 | A kind of digital multifunctional power supply based on plasma arc technology |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |