CN101590562B - Resistance welding equipment and welding control method - Google Patents
Resistance welding equipment and welding control method Download PDFInfo
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- CN101590562B CN101590562B CN2009100335752A CN200910033575A CN101590562B CN 101590562 B CN101590562 B CN 101590562B CN 2009100335752 A CN2009100335752 A CN 2009100335752A CN 200910033575 A CN200910033575 A CN 200910033575A CN 101590562 B CN101590562 B CN 101590562B
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Abstract
The invention provides resistance welding equipment and a welding control method. The resistance welding equipment consists of a frame, an electric cabinet and a PLC system, a welding transformer, an action mechanism, a welder controller, a waste box, an optical fiber sensor and a sensor controller, wherein the action mechanism consists of a baseplate, a main frame, a vertical cylinder, a main linear guide rail, a linear guide rail, a positioning manual press claw, a positioning fixture, a linear bearing, a main linear bearing, a positioning nut, an adjusting pressure spring, a screw mandrel, a servomotor, a coupler, a displacement sensor, a clamping cylinder, a pressure sensor, a left electrode, a right electrode, left and right linear guide rails, left and right linear bearings, an auxiliary frame, a connecting rod and a clamping pressing plate. The pressure sensor and a tracking system are adopted to collect pressure signals, the displacement sensor and the tracking system are adopted to collect displacement signals, and a PLC operational program is adopted for control, so that the welding of metal workpieces adopts dynamic on-line control to comprehensively monitor various welding control points in the whole process, and the welding deformation is controlled between 0.01 and 0.45mm to ensure welding quality.
Description
Technical field
The present invention relates to welding equipment, be meant a kind of resistance welding equipment and welding control method that little metal objects is welded especially.
Background technology
The existing resistance welding equipment that adopts artificial or pneumatic actuation mode that little metal objects is welded, generally be by controlling welding current and controlling welding effect weld interval, because weld displacement and welding pressure do not keep constant, can't monitor in real time simultaneously, thereby cause welding process to exist bigger quality fluctuation, influenced the welding quality of product.Therefore at present the welding performance to the resistance welding equipment of little metal objects is still waiting further raising.
Summary of the invention
Technical problem to be solved by this invention just is the unsettled situation of welding quality at existing electric resistance welding equipment existence, providing a kind of adopts high-precision pressure sensor and tracking system to collect pressure signal and high accuracy displacement sensor and tracking system collection displacement signal to welded part, control by PLC (full name Programmable Logic Controller is a Programmable Logic Controller) working procedure, the metal species workpiece is carried out overall process welding monitoring, thereby realize guaranteeing under the soldered On-line Product welding condition resistance welding equipment and the welding control method of welding quality stable.
Resistance welding equipment of the present invention is made up of frame, electric cabinet and PLC system, welding transformer, actuating mechanism, welding machine controller, collecting receptacle, Fibre Optical Sensor and sensor controller, electric cabinet and PLC system are positioned at the bottom of frame, welding transformer is positioned at the right side of central rack workbench, welding machine controller and sensor controller are positioned at the left side of central rack workbench, collecting receptacle is positioned at a jiao of frame bottom, Fibre Optical Sensor is positioned at the outside of central rack workbench, and actuating mechanism is positioned at central rack workbench centre; Wherein actuating mechanism is by base plate, mainframe, vertical cylinder, main line slideway, line slideway, locate manual paw, positioning tool, linear bearing, main linear bearing, setscrew nut, regulate compression spring, screw mandrel, servomotor, shaft coupling, displacement transducer, clamp cylinder, pressure sensor, left side electrode, right electrode, left and right sides line slideway, left and right sides linear bearing, the subsidiary engine frame, connecting rod and clamping pressing plate constitute, mainframe is erected at base plate one end, the mainframe upper end is provided with vertical cylinder, setscrew nut is fixed on the upper end of vertical cylinder, the mainframe vertical cylinder is arranged with main line slideway, main linear bearing and main line slideway are equipped with, be installed on the main linear bearing by the subsidiary engine frame that is with a whole set of welder on the downward expansion link of vertical cylinder, left end position at the subsidiary engine frame is fixed with the clamping cylinder, the adjustable pressure spring, pressure sensor, left and right sides line slideway is installed on the subsidiary engine frame that clamps the cylinder right side successively, displacement transducer is fixed on the centre of adjustable pressure spring, left and right sides linear bearing and left and right sides line slideway are equipped with, be provided with right electrode in the right part of subsidiary engine frame, the adjustable pressure spring is connected with pressure sensor by securing member, pressure sensor is connected to an end of connecting rod again, the other end of connecting rod and left electrode are fastenedly connected by clamping pressing plate, line slideway is fixed on the other end relative with mainframe on the base plate, linear bearing and line slideway are equipped with, positioning tool is housed on the linear bearing, locating manual paw is fixed on the positioning tool, servomotor is fixed under the base plate, and the servomotor turning cylinder is connected with the screw mandrel that is positioned at the positioning tool Lower Half by shaft coupling.
The selecting for use of resistance welding equipment device servomotor of the present invention can require according to the welding precision of institute's welding product and the size of weld force is selected, general stroke range 0-40mm, displacement accuracy 0.001mm.Pressure sensor selected range scope is 0-200N, precision 0.001N.Displacement transducer is selected for use and measured stroke is 0-10mm, independent linearity 0.2%, sampling rate 40000 times/second, capacity of decomposition 0.02%, linearity ± 0.3%, output-response time 0.075ms.When work, pressure sensor and displacement transducer send pressure signal and displacement signal to sensor controller, after the sensor controller analyzing and processing, output signal to PLC respectively, send signal after the treated analysis of PLC and finish the output welding for the welding current controller.PLC can select the Keyemce series of products for use, also can select Panasonic's series or other PLC series of products that adapt for use.The welding pressure of controlling in the welding process is 0-200N, and welding current is 100～3000A, and the welding deformation quantity is 0.01～0.45mm.When resistance welding equipment welds, with welded part put into positioning tool press the location manual paw after, by PLC control welding operation, by vertical cylinder promote to be arranged on the subsidiary engine frame by clamping cylinder, left side electrode, right electrode, left and right sides line slideway, the welding mechanism that a whole set of parts such as left and right sides linear bearing are formed enters the welding position by main line slideway and main linear bearing for guiding, controlled the stroke of vertical cylinder at this moment by setscrew nut, the clamping cylinder promotes left electrode and is welded with the right electrode clamping pad of fixing by line slideway and linear bearing guiding.Test the variation of solder joint pressure in the welding process by pressure sensor, change in location by displacement transducer test solder joint, send sensor signal to sensor controller, after the sensor controller Treatment Analysis, output signal to PLC respectively, quit work by output welding signal after the PLC comprehensive analysis processing or direct the warning.When package unit is worked, pressure sensor and displacement transducer are mainly done dynamically monitoring to welding pressure and welding deformation quantity and are controlled the duty of welding controller, the servomotor running drives positioning tool by screw mandrel and runs to second bond pad locations by first bond pad locations in the welding process, drive the bond pad locations of positioning tool running by the servomotor running by screw mandrel again after having welded, finish whole welding intervals until turn back to first bond pad locations by last bond pad locations to other.Vertical cylinder drive welding mechanism set back after welding was finished.In welding process if there is arbitrary welding process parameter to exceed setting range, PLC is an output alarm signal, machine is reported to the police and the action of locking all devices automatically, substandard product must be dropped into collecting receptacle, the Fibre Optical Sensor that triggers collecting receptacle top sends reset signal, can be with machine reset, input operation signal circulation the carrying out welding of next welding work pieces then.
Resistance welding equipment of the present invention is controlled by automatic program control or manual substep method of operating metal works welding employing PLC.The process of auto-programming welding control is as follows: the manual paw of clamping and positioning behind start → startup self-check program → the put into welding work pieces, the input operation signal vertical cylinder drives welder decline → clamping cylinder and clamps welded part, pressure sensor and displacement transducer are started working simultaneously, output signal to PLC respectively after sending pressure signal and displacement signal to the sensor controller analyzing and processing, what welding condition met the parameter setting range outputs signal to the welding machine controller by PLC; If welding condition does not meet the parameter setting range, then machine send out a warning with buzzer warning → PLC to data analysis after with signal be transferred to welding machine controller → welding machine controller output welding signal → first solder joint welding finish clamp cylinder and unclamp → vertical cylinder drives welder and sets back → the servomotor running drives positioning tool by screw mandrel and run to next bond pad locations → vertical cylinder by first bond pad locations and drive welder decline → clamping cylinder and clamp soldered product, pressure sensor and displacement transducer are started working simultaneously, output signal to PLC respectively after sending pressure signal and displacement signal to the sensor controller analyzing and processing, what welding condition met the parameter setting range outputs signal to the welding machine controller by PLC; If welding condition does not meet the parameter setting range, then machine sends out a warning and buzzer warning → PLC is transferred to the welding machine controller with signal after to data analysis, and the solder joint welding of → welding machine controller output welding signal → second finishes and clamps cylinder and unclamp → vertical cylinder drives welder and set back → and the servomotor running drives positioning tool by screw mandrel and runs to first bond pad locations by second bond pad locations; According to the welding job needs, the work control program of PLC not only is confined to 2 solder joints, can control the welding of a plurality of solder joints.When carrying out the auto-programming welding, the total source of the gas of complete machine is opened in the PLC start earlier, start and to finish and parameter enters operation sequence by self-check program after normal after configuring, with welded part put into positioning tool press the location manual paw after, the input operation signal vertical cylinder promotes welder and enters the welding position, clamp cylinder and promote left electrode and fixing right electrode clamping pad, pressure sensor in this process, displacement transducer and PLC and welding machine controller are worked simultaneously, sensor signal sends sensor controller to, after the sensor controller Treatment Analysis, output signal to PLC respectively, welding condition meets the parameter setting range and promptly outputs signal to the welding machine controller by PLC and finish welding by welding machine controller control welding machine again, and vertical cylinder drives welder and sets back then.If welding condition do not meet pressure sensing and displacement transducer parameter setting range then the bright everything of the direct output alarm signal red light of PLC stop.Welding process is by the variation of pressure sensor test solder joint pressure, and the change in location of testing solder joint by displacement transducer, data send sensor controller to by pressure sensor and displacement transducer, after the sensor controller Treatment Analysis, output signal to PLC respectively, whether output signal to welding machine controller output welding signal by decision after the PLC analyzing and processing, or directly warning quits work.The master control system of the master control system of pressure sensor and displacement transducer can know that the pressure that is shown in the welding process changes and change in displacement in the overall process.Drive positioning tool by the servomotor running by screw mandrel in the welding process and run to next bond pad locations by a last bond pad locations, promote welder by vertical cylinder and enter the welding position, clamp cylinder and promote to weld after left electrode clamps pad with the right electrode of fixing.In the welding interval if there is arbitrary welding process parameter to exceed setting range, PLC is an output alarm signal, machine is reported to the police and the action of locking all devices automatically, substandard product must be dropped into collecting receptacle, the Fibre Optical Sensor that triggers collecting receptacle top sends reset signal, can be with machine reset, input operation signal circulation the carrying out welding of next welding work pieces then.When manually welding, the total source of the gas of complete machine is opened in the PLC start, when machine startup finishes and parameter enters operation sequence by self-check program after normal after configuring, soldered product is put into positioning tool press the manual paw in location, the method that adopts substep to import the manual operation signal is controlled then: 1, make vertical cylinder promote welder downwards and enter the welding position; 2, clamp cylinder and promote to clamp soldered product, pressure sensor and displacement transducer are started working simultaneously, send pressure signal and displacement signal to sensor controller, output signal to PLC respectively and analyze after the sensor controller analyzing and processing, welding condition meets outputing signal to the welding machine controller by PLC and finishing welding by welding machine controller control welding machine again of parameter setting range; If welding condition does not meet the parameter setting range, then machine sends out a warning and buzzer warning; 3, welding finishes that clamping cylinder in back resets, vertical cylinder resets; 4, the servomotor running drives positioning tool by screw mandrel and moves to next bond pad locations; 5, the operation of vertical cylinder promotes welder downwards and enters the welding position; 6, clamp cylinder and promote to clamp soldered product, pressure sensor and displacement transducer are started working simultaneously, send pressure signal and displacement signal to sensor controller, output signal to PLC respectively and analyze after the sensor controller analyzing and processing, welding condition meets outputing signal to the welding machine controller by PLC and finishing welding by welding machine controller control welding machine again of parameter setting range; If welding condition does not meet the parameter setting range, then machine sends out a warning and buzzer warning; 7, welding finishes that clamping cylinder in back resets, vertical cylinder resets.Resistance welding equipment carries out the substep welding to each solder joint respectively by manual substep operation signal.
Its technical performance indications of resistance welding equipment of the present invention are as follows.
Resistance welding equipment its technical performance indications
| Sequence number | | Index | |
| 1 | |
1～10 | |
| 2 | The welding pressure control range | 0-200N |
| 3 | The welding deformation quantity | 0.01-0.45 |
|
| 4 | | 24VDC | |
| 5 | Air pressure | ≥0.5 |
|
| 6 | Cooling water source hydraulic pressure | 0.15-0.3 |
|
| 7 | Welding current | 100～3000A |
Advantage of the present invention just is to collect displacement signal owing to adopt high-precision pressure sensor and tracking system to collect pressure signal and high accuracy displacement sensor and tracking system, control by the PLC working procedure, make the welding of metal works is adopted dynamic On-line Control and can be detected the whole welding pressure of welded part, welding current and welding deformation quantity change, automatically differentiate parameters, especially the variation of weld displacement and welding pressure, complete monitoring respectively welds the control point comprehensively, and whether the differentiation welding meets the requirements and is stable automatically, the welding deformation quantity is controlled between the 0.01-0.45mm, has guaranteed the quality of welding; Because operation control is carried out instant alarming to incongruent welding process automatically, effectively improved the quality and the stability of welding.Resistance welding equipment automaticity height of the present invention, handling safety, reliable, easy.With welding controller and the operation control that equipment is used, visual degree height, adjust simple and clear, succinct convenient.Each parameter setting and adjustment can directly be finished on corresponding controllers.Therefore resistance welding equipment of the present invention has good application prospect.
Description of drawings
The present invention is described further below in conjunction with accompanying drawing;
Fig. 1 is that the master of resistance welding equipment of the present invention looks schematic diagram;
Fig. 2 is the schematic side view of resistance welding equipment of the present invention;
Fig. 3 is the schematic side view of resistance welding equipment actuating mechanism of the present invention;
Fig. 4 is that the master of resistance welding equipment actuating mechanism of the present invention looks schematic diagram;
Fig. 5 is a resistance welding equipment subsidiary engine frame schematic diagram of the present invention;
Fig. 6 is a resistance welding equipment PLC automatic running program workflow schematic diagram of the present invention.
With reference to accompanying drawing, I, frame, II, electric cabinet and PLC system, III, welding transformer, IV, actuating mechanism, V, welding controller, VI, collecting receptacle, VII, Fibre Optical Sensor, VIII, sensor controller; 1, base plate, 2, mainframe, 3, vertical cylinder, 4, main line slideway, 5-1～2, line slideway, 6, the positioning and fixing paw, 7, positioning tool, 8-1～2, linear bearing, 9, main linear bearing, 10, setscrew nut, 11, the adjustable pressure spring, 12, screw mandrel, 13, servomotor, 14, shaft coupling, 15, displacement transducer, 16, clamp cylinder, 17, pressure sensor, 18, left electrode, 19, right electrode, 20, left and right sides line slideway, 21, left and right sides linear bearing, 22, subsidiary engine frame, 23, connecting rod, 24, clamp pressing plate.
The specific embodiment
Below be embodiments of the invention, the actual use of the present invention is not limited to embodiment.
The resistance welding equipment that adopts structure of the present invention is to welding between metal insert on the wiper system gear cap and the metal spring sheet.Consult accompanying drawing, resistance welding equipment is by frame I, electric cabinet and the II of PLC system, welding transformer III, actuating mechanism IV, welding machine controller V, collecting receptacle VI, Fibre Optical Sensor VII and sensor controller VIII form, electric cabinet and the II of PLC system are positioned at the bottom of frame I, welding transformer III is positioned at the right side of frame I middle part workbench, welding machine controller V and sensor controller VIII are positioned at the left side of frame I middle part workbench, collecting receptacle VI is positioned at a pin of frame I bottom, Fibre Optical Sensor VII is positioned at the outside of frame I middle part workbench, and actuating mechanism IV is positioned at workbench centre, frame I middle part; Wherein actuating mechanism is by base plate 1, mainframe 2, vertical cylinder 3, main line slideway 4, line slideway 5, locate manual paw 6, positioning tool 7, linear bearing 8, main linear bearing 9, setscrew nut 10, regulate compression spring 11, screw mandrel 12, servomotor 13, shaft coupling 14, displacement transducer 15, clamp cylinder 16, pressure sensor 17, left side electrode 18, right electrode 19, left and right sides line slideway 20, left and right sides linear bearing 21, subsidiary engine frame 22, connecting rod 23 and clamping pressing plate 24 constitute, mainframe 2 is erected at base plate 1 one ends, mainframe 2 upper ends are provided with vertical cylinder 3, setscrew nut 10 is fixed on the upper end of vertical cylinder 3, mainframe 2 vertical cylinder are arranged with main line slideway 4, main linear bearing 9 is equipped with main line slideway 4, be installed on the main linear bearing 9 by the subsidiary engine frame 22 that is with a whole set of welder on the downward expansion link of vertical cylinder, be fixed with clamping cylinder 16 at the left end position of subsidiary engine frame 22, adjustable pressure spring 11, pressure sensor 17, left and right sides line slideway 20 is installed on the subsidiary engine frame 22 that clamps cylinder 16 right sides successively, displacement transducer 15 is fixed on the centre of adjustable pressure spring 11, left and right sides linear bearing 21 is equipped with left and right sides line slideway 20, be provided with right electrode 19 in the right part of subsidiary engine frame 22, adjustable pressure spring 11 is connected with pressure sensor 17 by securing member, one end of pressure sensor 17 is connected on the connecting rod 23, and the other end of connecting rod 23 and left electrode 18 are fastenedly connected by clamping pressing plate 24.Line slideway 5 is fixed on the other end relative with mainframe on the base plate 1, linear bearing 8 is equipped with line slideway 5, positioning tool 7 is housed on the linear bearing 8, locating manual paw 6 is fixed on the positioning tool 7, servomotor 13 is fixed under the base plate 1, and servomotor 13 turning cylinders are connected with the screw mandrel 12 that is positioned at positioning tool 7 Lower Halves by shaft coupling 14.
The servomotor of rain shaving electrical machine gear cap welding equipment is selected stroke range 0-10mm for use, displacement accuracy 0.001mm.Pressure sensor is selected Philip XST/C-S2MT2AOB3SOVON, range ability 0-100N, precision 0.001N for use.Displacement controller selects for use Keyemce ex-v05, displacement transducer to select EX-416V, range 0-5mm/0.2 for use ", sampling rate 40000/s, linearity ± 0.3%, output-response time 0.075ms.Programmable Logic Controller PLC selects the Keyemce series of products for use.The metal objects welder is adopted PLC, by automatic program control or manually stepping control.
Before using welding equipment of the present invention, the welding stability of the common welding equipment of use is poor, and solder joint adhesion fluctuating range is very big, and processing procedure Capability index CPK only 0.63, and needs additionally to increase a manpower and carry out the weld appearance inspection.After using welding equipment of the present invention, equipment welding stability and welding process have had better controlled, and welding quality is significantly improved.By online checking online on probation to wiper motor system gear cap product pad, the solder joint pulling force of its regulation requires to be controlled within the 200N-230N, all product solder joint pulling force must absolutely be controlled in this level, the discreteness of the pull-up curve of product solder joint integral body has obtained better controlled, and processing procedure Capability index CPK rises to 1.71.Because online weld appearance inspection work has been cancelled in the raising of welding stability, has also saved human cost when having improved welding quality and efficient.Welding equipment of the present invention shows in the practical application of rain shaving electrical machine gear cap welding process, has well embodied superiority and advance for existing equipment.
Claims (9)
1. resistance welding equipment, it is characterized in that by frame (I), electric cabinet and PLC system (II), welding transformer (III), actuating mechanism (IV), welding machine controller (V), collecting receptacle (VI), Fibre Optical Sensor (VII) and sensor controller (VIII) are formed, electric cabinet and PLC system (II) are positioned at the bottom of frame (I), welding transformer (III) is positioned at the right side of frame (I) middle part workbench, welding machine controller (V) and sensor controller (VIII) are positioned at the left side of frame (I) middle part workbench, collecting receptacle (VI) is positioned at a jiao of frame (I) bottom, Fibre Optical Sensor (VII) is positioned at the outside of frame (I) middle part workbench, and actuating mechanism (IV) is positioned at workbench centre, frame (I) middle part; Wherein actuating mechanism is by base plate (1), mainframe (2), vertical cylinder (3), main line slideway (4), line slideway (5), locate manual paw (6), positioning tool (7), linear bearing (8), main linear bearing (9), setscrew nut (10), regulate compression spring (11), screw mandrel (12), servomotor (13), shaft coupling (14), displacement transducer (15), clamp cylinder (16), pressure sensor (17), left side electrode (18), right electrode (19), left and right sides line slideway (20), left and right sides linear bearing (21), subsidiary engine frame (22), connecting rod (23) and clamping pressing plate (24) constitute, mainframe (2) is erected at base plate (1) one end, mainframe (2) upper end is provided with vertical cylinder (3), setscrew nut (10) is fixed on the upper end of vertical cylinder (3), mainframe (2) vertical cylinder is arranged with main line slideway (4), main linear bearing (9) is equipped with main line slideway (4), the subsidiary engine frame (22) that is with a whole set of welder on the downward expansion link of vertical cylinder is installed on the main linear bearing (9), be fixed with clamping cylinder (16) at the left end position of subsidiary engine frame (22), adjustable pressure spring (11), pressure sensor (17), left and right sides line slideway (20) is installed on the subsidiary engine frame (22) that clamps cylinder (16) right side successively, displacement transducer (15) is fixed on the centre of adjustable pressure spring (11), left and right sides linear bearing (21) is equipped with left and right sides line slideway (20), be provided with right electrode (19) in the right part of subsidiary engine frame (22), adjustable pressure spring (11) is connected with pressure sensor (17) by securing member, pressure sensor (17) is connected to an end of connecting rod (23) again, the other end of connecting rod (23) and left electrode (18) are fastenedly connected by clamping pressing plate (24), line slideway (5) is fixed on base plate (1) and goes up the other end relative with mainframe, linear bearing (8) is equipped with line slideway (5), positioning tool (7) is housed on the linear bearing (8), locating manual paw (6) is fixed on the positioning tool (7), servomotor (13) is fixed under the base plate (1), and servomotor (13) turning cylinder is connected with the screw mandrel (12) that is positioned at positioning tool (7) Lower Half by shaft coupling (14).
2. resistance welding equipment according to claim 1 is characterized in that the stroke range 0-40mm of servomotor, displacement accuracy 0.001mm.
3. resistance welding equipment according to claim 2 is characterized in that the stroke range 010mm of servomotor.
4. resistance welding equipment according to claim 1 is characterized in that the pressure sensor range ability is 0-200N, precision 0.001N; The displacement sensor stroke is 0-10mm, independent linearity 0.2%, sampling rate 40000 times/second, capacity of decomposition 0.02%, linearity ± 0.3%, output-response time 0.075ms.
5. resistance welding equipment according to claim 1 is characterized in that the welding pressure of welding equipment control is 0～200N, and welding current is 100～3000A, and the welding deformation quantity is 0.01～0.45mm.
6. resistance welding equipment according to claim 1 is characterized in that the welding pressure of controlling in the welding process is 60N, and welding current is 2000A, and the welding deformation quantity is 0.4mm.
7. the welding control method of a resistance welding equipment, it is characterized in that welding adopts Programmable Logic Controller PLC to control by the automatic program control method to metal works, the process of auto-programming welding control is as follows: the manual paw of clamping and positioning behind start → startup self-check program → the put into welding work pieces, the input operation signal vertical cylinder drives welder decline → clamping cylinder and clamps welded part, pressure sensor and displacement transducer are started working simultaneously, output signal to PLC respectively after sending pressure signal and displacement signal to the sensor controller analyzing and processing, what welding condition met the parameter setting range outputs signal to the welding machine controller by PLC; If welding condition does not meet the parameter setting range, then machine send out a warning with buzzer warning → PLC to data analysis after with signal be transferred to welding machine controller → welding machine controller output welding signal → first solder joint welding finish clamp cylinder and unclamp → vertical cylinder drives welder and sets back → the servomotor running drives positioning tool by screw mandrel and run to next bond pad locations → vertical cylinder by first bond pad locations and drive welder decline → clamping cylinder and clamp soldered product, pressure sensor and displacement transducer are started working simultaneously, output signal to PLC respectively after sending pressure signal and displacement signal to the sensor controller analyzing and processing, what welding condition met the parameter setting range outputs signal to the welding machine controller by PLC; If welding condition does not meet the parameter setting range, then machine sends out a warning and buzzer warning → PLC is transferred to the welding machine controller with signal after to data analysis, and the solder joint welding of → welding machine controller output welding signal → second finishes and clamps cylinder and unclamp → vertical cylinder drives welder and set back → and the servomotor running drives positioning tool by screw mandrel and runs to first bond pad locations by second bond pad locations.
8. the welding control method of a resistance welding equipment, it is characterized in that adopting Programmable Logic Controller PLC to control by manual substep method of operating to metal works welding, it is as follows to adopt substep to import the method for manual operation signal: (1), make vertical cylinder promote welder downwards to enter the welding position; (2), clamp cylinder and promote to clamp soldered product, pressure sensor and displacement transducer are started working simultaneously, pressure signal and displacement signal sent to output signal to PLC respectively after the sensor controller analyzing and processing and analyze, welding condition meets outputing signal to the welding machine controller by PLC and finishing welding by welding machine controller control welding machine again of parameter setting range; If welding condition does not meet the parameter setting range, then machine sends out a warning and buzzer warning; (3), welding finishes that clamping cylinder in back resets, vertical cylinder resets; (4), the servomotor running drives positioning tool by screw mandrel and moves to next bond pad locations; (5), the operation of vertical cylinder promotes welder downwards and enters the welding position; (6), clamp cylinder and promote to clamp soldered product, pressure sensor and displacement transducer are started working simultaneously, pressure signal and displacement signal sent to output signal to PLC respectively after the sensor controller analyzing and processing and analyze, welding condition meets outputing signal to the welding machine controller by PLC and finishing welding by welding machine controller control welding machine again of parameter setting range; If welding condition does not meet the parameter setting range, then machine sends out a warning and buzzer warning; (7), welding finishes that clamping cylinder in back resets, vertical cylinder resets.
9. the welding control method of resistance welding equipment according to claim 8 is characterized in that product solder joint processing procedure Capability index CPK is 1.71.
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