PLC controls machine of spot welding of double head of type of door of side wall dragon

The Circle Control Of Spot Welding Parameters Were Controlled By MED Controller, speed Of The Portal Jib Frame System Controlled By FUJI G9 Series Transducer And The Whole System Controlled By Programmable Controller C200H.

After Two Years Circulate, it Turns Out That, this Way Of Reform Is A Good Method To Enhance The Using Rate And Function Reliability.

Key Words: Side-wall Type Double-edged Automatic Spot Welding Machine; Single Side Spot Welding, ; Double head of PLC Control1 purpose and type of door of dragon of task side wall nods welder automatically is Chu Congdong heart introduces 80 time, those who be used at railroad traffic to refrigerate car side wallboard and side wall pillar is full automatic spot welding. The time that runs as a result of this equipment is long, yuan loss of parts of an apparatus is severe and lack spare parts, fault rate rises ceaselessly, affect normal manufacturing procedure directly, electric equipment system has while accordingly the decision is maintaining system of this equipment machinery redesign, use advanced can make up what Cheng controller PLC controls whole system to move. The graph shows the wallboard that it is side and connective of side wall pillar 1 times solder nods distributinging sketch map, the successive automation that the main function of equipment implements all solder to nod namely solders process. The graph wins the bid the moving pace that the successive automation that gave all solder point solders takes a course. The machine of this equipment uses dragon mast structure, the rail that whole dragon mast can set only on workshop ground level ground along installation is fore-and-aft move, when dragon mast shows way 1 times by the graph fore-and-aft pace is entered when moving, the in order that can implement pillar of side wall of one by one solders. The installation on dragon mast has but transverse the car that run, two resistance welding carry on the car transformer and solder electrode and spiral lifting device of its hydraulic pressure. Transformer of two block solder can realize time-sharing to solder two are nodded, by the graph when the car 1 shows way (namely direction of pillar of edge side wall) transverse pace is entered when moving, the in order that can implement all solder on pillar of every side wall to nod solders. Car by 1.

The retarding brake electromotor of 5kW is driven through transmission shaft move. Pursue solder nods 1 side wallboard and connective of side wall pillar distributing 1, car condition takes way 2, full automatic solder the pace takes a course 2, dragon mast pace takes moving way 4, side wall pillar 5, side wallboard 6, solder nods 2 control the system is comprised. 1 solder device solders control equipment by solder transformer, solder electrode, advocate the composition such as electric power loop and spot welding controller. Solder Lin Daofu offers former Dong Dehai transformer, model is VPA2 × 160. Use technology of bosseyed spot welding. How does every transformer contain two electrode, one solders extremely, an auxiliary electrode (blind pole) , mount buy drive by hydraulic pressure respectively its rise fall. Of a transformer solder loop principle is shown 2 times like the graph, among them V1, V2 gives priority to power switch. Solder to circulate and solder to control the Medweld that uses Shanghai to produce normatively.

Controller of 200S resistance welding, it is one kind uses Z180 microprocessor pilot controller of single-phase resistance welding, it controls function not only admirable, early childhood to be started for having solder (300, 01, 300, 02) , solder end (902) , breakdown / call the police (903) wait for signal, and easy input with PLC / output interface. Graph 2 solder loop principle pursues 2. The dragon mast of Yuan Dongde of moving system of 2 dragon mast runs a system to use dc motive timing, circuit is complex, the dragon mast after transforming runs a system to use transducer of Fuji G9 series to drive 4 extremely three-phase asynchronous electromotor, repass reducer, bevel gear to dragon mast the drive of two side works on the axis, the output that passes transducer can have stepless speed regulation. At present the speed of setting has 3 kinds: Namely fast (50Hz) , slow fast (30Hz) with decelerate (20Hz) . Graph the circuit principle graph of moving orgnaization of the 3 mast that it is dragon. Transducer of the FRENIC 5000G9S in the graph provided the interface signal that carries easily with PLC input output, have turning (302) , invert (303) , speed chooses 1 (304) , speed chooses 2 (305) , transducer breakdown / call the police to move with transducer (J5) wait for signal. 2. 3 other assist device to include system of level control apparatus, cooling water, fan, breakdown to detect wait with protection system. Level control apparatus expresses composition by relay of a powerful person of a magnetism of 3 4 electrify, double check valve, pressure, pressure-relief valve, pressure, its task is to control electrode to rise to fall and adjust electrode pressure. System of cooling water, fan uses refrigeration to solder transformer and advocate V1 of electric power parts of an apparatus, V2, use flow transducer to detect water measures signal, the ability when these signal are only normal allows to solder automatically. Breakdown detects signal includes transducer breakdown, PLC stoppage, solder control system breakdown, when when either breakdown appears, will cause among them solder automatically of the program stop. Graph moving principle of 3 dragon mast pursues 2. System of control of 4 　 PLC is mixed according to the function with original equipment after transforming new the function that join, this control system shares 70 inputs to nod, 42 output a dot, choose Japanese OMRON so (establish stone) the C200H module type of the company can make up Cheng controller, match module of input, output. The CPU module of a C200H but enlarge expands twice device, chamfer of cent of mother board unit, 8 chamfer and 5 chamfer, the system can offer 480 inputs at most / output dot. C200H system interior has 9 kinds of relay unit, in-house and auxiliary relay is unit 3536, time / note number implement 512, use echelon graph process designing, instruction system rich, process designing is convenient, still have data processing and operation statement. According to the requirement, this PLC system by a 10 chamfer 5 module of mother board, a CPU, ID212 input module (every at 16 o'clock) , the output module that 2 OC225 relay outputs (every at 16 o'clock) , the output module of door of an ID212 transistor OC (at 16 o'clock) , in all at 8 o'clock) the composition of output module place that relay outputs, each module is in of mother board if the graph is shown 4 times,distributing. The address of each module and installation are in the position that mother board inserts groove is concerned, between them can crossing-over. The type of each module, address is arranged (passageway date + serial number is arranged inside the passageway) , and outside if the kind that receives parts of an apparatus and action are expressed 1 show 2 times with the watch. Watch 1 in all model that input module all are ID212, among them in 005 passageways, of the distance of select switch of dragon mast contrail according to side wall pillar different have two kinds of choices, be choice dragon mast essentially among them a group of paces undertake into the photoelectricity switch of the distance the position detects. Car contrail choice and choice of solder check the number close suitably, the solder check the number that wants in order to choose place of pillar of every side wall. Car condition takes a space detecting is close to switch composition by two groups. When the contrail on the choice, actual it is the choice is close to switch one group to undertake the position detects among them, right now optional solder check the number is 40 with 32; Optional solder check the number is when the contrail below the choice 44, 36 with 28 bits. Pursue the I/O module of PLC of type of module of 4 　 C200H distributings express 1 input signal to allocate watch passageway date to input signal type action 005 (00 ～ 15) choice of choice of choice of select switch wallboard, dragon mast moving contrail, solder check the number, hand moves contrail of choice, car to choose to wait 006 (; The hand moves oil pump, water pump, fan to open stop; The hand moves a car to open stop; Open automatically stop etc 007 (00 ～ 15) position of maximum of around of contact dragon mast, car controls journey switch, pressure and hot relay the signal such as ultimate position, temperature, pressure, discharge 008 (00 ～ 15) photoelectricity switch, pass an analysis, can nod double head of type of door of side wall dragon automatically what the PLC of welder controls a system to run state branch to be moved for the hand, mix automatically breakdown 3 kinds of condition. Concern of because the system is medium mutual chain is more, behavioral loop process is more complex. Analyse through having development to order of its principle, movement but the PLC of will whole system controls software to design cent to be moved for the hand, 5 big module come to processing of automatic, breakdown, indication drive and integrated output drive solve. The relation between each module is shown 5 times like the graph. Before the compositive hand of 5 control software moves a part to basically be used at solder, the graph is adjusted, its are main the function includes a car to control around of mast of travel, dragon from beginning to end of mast of slow travel, dragon is swift travel, electrode rises fall, water pump, fan moves etc. Breakdown part basically is used at occurrence breakdown of welder some part. Lock up above all solder automatically surely program, make solder the process cannot undertake, allow what certain hand uses a function to move at the same time, so that undertake be debugged accordingly and be maintaininged, make of breakdown eliminate more convenient. Module of indication screen drive is the demonstrative interface of the user, its main function is to use the computation of solder check the number that shows every wallboard and computation of number of place solder work. Integrated output module is the final drive module that the hand uses function and automatic function, the hand moves the in-house resource that PLC uses in the program module of function and automatic function to serve as auxiliary relay, all sorts of mediacy that will remember a program to move. The output that exports module integratedly is the condition according to these auxiliary relay break has inside every scanning cycle. Automatic function is the most complex one part in whole control software, also be the key that whole software designs, graph 6 gave out the condition flow chart that automatic function simplifies. Its are main the movement is sequential the characteristic is in dragon mast the pace is entered what the car includes to the pace enters the loop that move and realize pillar of side wall of one by one and solder of one by one to nod in moving loop is full automatic solder process. Full automatic after the ultimate position that soldering end condition is the travel before the travel before dragon mast arrives, dragon mast is fast return former stop. Graph 6 full automatic solder C200H of 4 ends pragmatics can make up functional condition flow chart Cheng controller is full automatic to the entrance after machine of spot welding of door of dragon of side wall double head undertakes technical reformation, use two years of much practice prooves via investment, the job reliable, performance is good. And yuan of parts of an apparatus after transforming replace go to the lavatory easily, user response is favorable. Prove from this, with dependability the PLC with tall, easy process designing is opposite the method that the electric equipment of the equipment of a few inchoate entrances controls a system to undertake transforming is a kind of effective that raises equipment to run efficiency and utilization rate. CNC Milling CNC Machining