CN103962701A - Projection welding machine control system for different water groove product projection welding - Google Patents
Projection welding machine control system for different water groove product projection welding Download PDFInfo
- Publication number
- CN103962701A CN103962701A CN201310045011.7A CN201310045011A CN103962701A CN 103962701 A CN103962701 A CN 103962701A CN 201310045011 A CN201310045011 A CN 201310045011A CN 103962701 A CN103962701 A CN 103962701A
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- China
- Prior art keywords
- pressure
- valve
- control loop
- gas
- projection welding
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Classifications
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/14—Projection welding
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Feedback Control In General (AREA)
Abstract
The invention relates to a projection welding machine control system for different water groove product projection welding. The projection welding machine control system comprises a gas source, a welding cylinder, a gas feeding electromagnetic valve, an exhausting electromagnetic valve, a proportional valve, pressure sensor and a control loop. The gas feeding electromagnetic valve and the exhausting electromagnetic valve are connected in parallel between the proportional valve and the control loop, the proportional valve is connected to a welding cylinder, the pressure sensor is connected to the control loop and the welding cylinder, detects the pressure of the welding cylinder and inputs pressure signals into the control loop, and the control loop controls the gas feeding electromagnetic valve and the exhausting electromagnetic valve to output the pressure. Compared with the prior art, the projection welding machine control system has the advantages that stepless adjustment of the pressure and speed can be implemented, and the impacting situation is avoided when a conventional switching valve is reversed.
Description
Technical field
The present invention relates to a kind of projection welding control system, especially relate to a kind of projection welder control system for the projection welding of water low water different product.
Background technology
Above one platform convex welding machine, need to do several products, between different product, electric current and electrode pressure will match each other, replacement of products all will carry out pressure and electric current adjustment each time, the large I of electrode pressure is regulated by the pressure-reducing valve in pneumatic bigeminy part, turn is for increasing pressure clockwise, turn is for reducing pressure counterclockwise, and indicated the operating air pressure of welding machine by air gauge table, find corresponding electrode pressure according to pressure curve again, adjust simultaneously choke valve make cylinder pressurization and opening speed steady.
In actual operation, adjust and realize by manual adjustment SMC AR50-06G valve, in adjustment process, electrode pressure control accuracy is poor, and employee easily occurs that in replacing product process initial workpiece pressure and electric current do not mate bad product of weldering.
Summary of the invention
Object of the present invention is exactly to provide a kind of electrodeless adjusting that realizes pressure, speed in order to overcome the defect that above-mentioned prior art exists, the projection welder control system for the projection welding of water low water different product of the impact phenomenon while having avoided the switching regulator air valve commutation of normal open.
Object of the present invention can be achieved through the following technical solutions: a kind of projection welder control system for the projection welding of water low water different product, it is characterized in that, comprise source of the gas, weld cylinder, to pneumoelectric magnet valve, exhaust solenoid valve, proportioning valve, pressure sensor, control loop, described give pneumoelectric magnet valve and exhaust solenoid valve parallel connection are connected between proportioning valve and control loop, proportioning valve connecting welding cylinder, described pressure sensor connects respectively control loop and weld cylinder; Pressure sensor is surveyed the air pressure of weld cylinder, and the pressure signal input control loop of surveying, and control loop control is to pneumoelectric magnet valve and exhaust solenoid valve regulation output pressure.
Described proportioning valve comprises air inlet, gas outlet, diaphragm, pilot chamber, air feed spool, exhaust plug, described air inlet connects source of the gas, air feed spool is arranged between air inlet and gas outlet, and connect diaphragm, diaphragm arrangement is indoor guide, gas source feed is inputted proportioning valve from air inlet, after giving pneumoelectric magnet valve, enter pilot chamber, pilot chamber pressure rise is produced pressure to diaphragm, drive and be connected the unlatching of air feed spool with diaphragm, exhaust plug is closed, produce output pressure, pressure sensor detects this output pressure and feeds back to control loop, the desired value that control loop is relatively preset compares finishing with the output pressure detecting, make output pressure and input signal proportional, thereby obtain the proportional variation of variation of output pressure and input signal.Owing to there is no nozzle-baffle mechanism, therefore valve is insensitive to impurity, reliability is high.
Described source of the gas connects proportioning valve by oil and water filters, pressure-reducing valve, oil sprayer, thereby connecting welding cylinder, pressure-reducing valve regulates the required bleed pressure of weld cylinder, and oil and water filters filters the impurity profit in input source of the gas, and oil sprayer increases oil lubrication to gas circuit and the cylinder moving of filtering.
Automatically control can be divided into intermittent controlled and continuous control.Intermittent controlled is switch control.The reversal valve of the switching regulator (ON-OFF) that in atmospheric control, usage operation frequency is lower is controlled the break-make of gas circuit.Regulate needed pressure by pressure-reducing valve, regulate needed flow by choke valve.This traditional atmospheric control will want to have multiple power outputs and multiple movement velocity, just needs multiple pressure-reducing valves, choke valve and reversal valve.Like this, not only element need to be many, and cost is high, construction system complexity, and many elements all need to carry out in advance manual adjustment.And the proportional valve control that the present invention adopts belongs to continuous control, be characterized in that output quantity changes with the variation of input quantity (current value or magnitude of voltage), between output quantity and input quantity, there is certain proportionate relationship.Proportion control has dividing of open loop control and closed-loop control.Closed-loop control has the reponse system of signal.
Compared with prior art, the present invention has the following advantages:
1) can realize the electrodeless adjusting of pressure, speed, the impact phenomenon while having avoided the switching regulator air valve commutation of normal open.
2) can realize Long-distance Control and programme-control.
3) compared with intermittent controlled, system simplification, element greatly reduces.
4) compared with hydraulic proportion valve, volume is little, lightweight, simple in structure, cost is lower, but response speed is much slower than hydraulic system, also more responsive to load variations.
5) use that power is little, heating less, noise is low.
6) can breaking out of fire, free from environmental pollution.Be acted upon by temperature changes little.
Brief description of the drawings
Fig. 1 is principle of the invention figure;
Fig. 2 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in Fig. 1～2, a kind of projection welder control system for the projection welding of water low water different product, comprise source of the gas, weld cylinder, to pneumoelectric magnet valve 1, exhaust solenoid valve 2, proportioning valve, pressure sensor 7, control loop 8, described give pneumoelectric magnet valve 1 and exhaust solenoid valve 2 parallel connections are connected between proportioning valve and control loop 8, proportioning valve connecting welding cylinder, described pressure sensor 7 connects respectively control loop 8 and weld cylinder; Pressure sensor 7 is surveyed the air pressure of weld cylinder, and the pressure signal input control loop of surveying, and control loop control is to pneumoelectric magnet valve and exhaust solenoid valve regulation output pressure.
Described proportioning valve comprises air inlet 9, gas outlet 10, diaphragm 4, pilot chamber 3, air feed spool 5, exhaust plug 6, described air inlet 9 connects source of the gas, air feed spool 5 is arranged between air inlet 9 and gas outlet 10, and connect diaphragm 4, diaphragm 4 is arranged in pilot chamber 3, gas source feed is inputted proportioning valve from air inlet 9, after giving pneumoelectric magnet valve 1, enter pilot chamber 3, pilot chamber 3 pressure rises are produced pressure to diaphragm 4, driving is connected air feed spool 5 with diaphragm 4 and opens, exhaust plug 6 is closed, produce output pressure, pressure sensor 7 detects this output pressure and feeds back to control loop 8, the desired value that control loop 8 is relatively preset compares finishing with the output pressure detecting, make output pressure and input signal proportional, thereby obtain the proportional variation of variation of output pressure 11 and input signal 12.Control loop 8 connects power supply 13, and is provided with pressure and shows 14, and control loop 8 can input signal 12, output signal 15.Owing to there is no nozzle-baffle mechanism, therefore valve is insensitive to impurity, reliability is high.
Described source of the gas connects proportioning valve by oil and water filters, pressure-reducing valve, oil sprayer, thereby connecting welding cylinder, pressure-reducing valve regulates the required bleed pressure of weld cylinder, and oil and water filters filters the impurity profit in input source of the gas, and oil sprayer increases oil lubrication to gas circuit and the cylinder moving of filtering.
Automatically control can be divided into intermittent controlled and continuous control.Intermittent controlled is switch control.The reversal valve of the switching regulator (ON-OFF) that in atmospheric control, usage operation frequency is lower is controlled the break-make of gas circuit.Regulate needed pressure by pressure-reducing valve, regulate needed flow by choke valve.This traditional atmospheric control will want to have multiple power outputs and multiple movement velocity, just needs multiple pressure-reducing valves, choke valve and reversal valve.Like this, not only element need to be many, and cost is high, construction system complexity, and many elements all need to carry out in advance manual adjustment.And the proportional valve control that the present invention adopts belongs to continuous control, be characterized in that output quantity changes with the variation of input quantity (current value or magnitude of voltage), between output quantity and input quantity, there is certain proportionate relationship.Proportion control has dividing of open loop control and closed-loop control.Closed-loop control has the reponse system of signal.
Claims (3)
1. the projection welder control system for the projection welding of water low water different product, it is characterized in that, comprise source of the gas, weld cylinder, to pneumoelectric magnet valve, exhaust solenoid valve, proportioning valve, pressure sensor, control loop, described give pneumoelectric magnet valve and exhaust solenoid valve parallel connection are connected between proportioning valve and control loop, proportioning valve connecting welding cylinder, described pressure sensor connects respectively control loop and weld cylinder; Pressure sensor is surveyed the air pressure of weld cylinder, and the pressure signal input control loop of surveying, and control loop control is to pneumoelectric magnet valve and exhaust solenoid valve regulation output pressure.
2. a kind of projection welder control system for the projection welding of water low water different product according to claim 1, it is characterized in that, described proportioning valve comprises air inlet, gas outlet, diaphragm, pilot chamber, air feed spool, exhaust plug, described air inlet connects source of the gas, air feed spool is arranged between air inlet and gas outlet, and connect diaphragm, diaphragm arrangement is indoor guide, gas source feed is inputted proportioning valve from air inlet, after giving pneumoelectric magnet valve, enter pilot chamber, pilot chamber pressure rise is produced pressure to diaphragm, drive and be connected the unlatching of air feed spool with diaphragm, exhaust plug is closed, produce output pressure, pressure sensor detects this output pressure and feeds back to control loop, the desired value that control loop is relatively preset compares finishing with the output pressure detecting, make output pressure and input signal proportional.
3. a kind of projection welder control system for the projection welding of water low water different product according to claim 1, it is characterized in that, described source of the gas connects proportioning valve by oil and water filters, pressure-reducing valve, oil sprayer, thereby connecting welding cylinder, pressure-reducing valve regulates the required bleed pressure of weld cylinder, oil and water filters filters the impurity profit in input source of the gas, and oil sprayer increases oil lubrication to gas circuit and the cylinder moving of filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310045011.7A CN103962701A (en) | 2013-02-05 | 2013-02-05 | Projection welding machine control system for different water groove product projection welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310045011.7A CN103962701A (en) | 2013-02-05 | 2013-02-05 | Projection welding machine control system for different water groove product projection welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103962701A true CN103962701A (en) | 2014-08-06 |
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ID=51232968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310045011.7A Pending CN103962701A (en) | 2013-02-05 | 2013-02-05 | Projection welding machine control system for different water groove product projection welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103962701A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458857A (en) * | 2015-12-30 | 2016-04-06 | 浙江万丰科技开发股份有限公司 | Constant force compensation device |
| CN105947789A (en) * | 2016-06-13 | 2016-09-21 | 江苏通光信息有限公司 | Electrical integration type automatic control device for optical fiber pay-off tension |
| CN115156684A (en) * | 2022-08-19 | 2022-10-11 | 广州松兴电气股份有限公司 | Resistance welding machine and gas circuit control system used for same |
-
2013
- 2013-02-05 CN CN201310045011.7A patent/CN103962701A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105458857A (en) * | 2015-12-30 | 2016-04-06 | 浙江万丰科技开发股份有限公司 | Constant force compensation device |
| CN105947789A (en) * | 2016-06-13 | 2016-09-21 | 江苏通光信息有限公司 | Electrical integration type automatic control device for optical fiber pay-off tension |
| CN115156684A (en) * | 2022-08-19 | 2022-10-11 | 广州松兴电气股份有限公司 | Resistance welding machine and gas circuit control system used for same |
| CN115156684B (en) * | 2022-08-19 | 2023-10-24 | 广州松兴电气股份有限公司 | Resistance welding machine and gas circuit control system for same |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140806 |