Welding Current Control System of Steel Grating Press Welding Machine
A technology of current control and steel grating, which is applied in the direction of welding power supply, welding equipment, manufacturing tools, etc., can solve the problems of workpiece over-melting, low work efficiency, and failure to form, so as to avoid harm and improve product quality.
Active Publication Date: 2016-08-24
XINXING DUCTILE IRON PIPES CO LTD
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Problems solved by technology
This method has the following problems: the current impact is large during each step of the welding process, and the welding of the workpiece is easy to cause over-melting or even failure to form, and it also causes great harm to the welding power supply, including the rectifier diode and the soft connection device. also has adverse effects
For products of certain specifications, it is necessary to manually adjust the welding pressure and change the contact resistance of the workpiece to complete, which causes a waste of energy and many unfavorable factors for hydraulic equipment. The practice of observation does not guarantee the quality of the product, and the work efficiency is low
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[0015] Below in conjunction with specific embodiment the present invention is described in further detail:
[0016] A welding current control system of a steel grid press welding machine, including a hydraulic system, a position detection device, a limit switch installed on the equipment, a control system, a silicon controlled rectifier, and a welding electrode 2. The control system includes a controller and A digital-to-analog converter, the output end of the position detection device is connected to the input end of the controller, the output end of the controller is connected to the input end of the thyristor after the digital-to-analog converter, and the output of the thyristor end is connected with the welding electrode 2, the control end of the hydraulic system is connected with the steel bar 1, and the welding electrode 2 is respectively in contact with two steel bars 1, and the position detection device is arranged at the control end of the hydraulic system, such as fi...
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The invention discloses a welding current control system of a steel grating press welder and relates to the technical field of steel grating welding. The control system comprises a hydraulic system, a position detecting device, a limiting switch, a control system body, a thyristor and welding electrodes, wherein the limiting switch, the control system body, the thyristor and the welding electrodes are installed on equipment. The control system body comprises a controller and a digital-analog converter. The output end of the positioning detecting device is connected with the input end of the controller. The output end of the controller is connected with the input end of the thyristor through the digital-analog converter. The output end of the thyristor is connected with the welding electrodes. The control end of the hydraulic system is connected with steel strips. The welding electrodes make contact with the two steel strips respectively. The position detecting device is arranged at the control end of the hydraulic system. According to the control system, many adverse effects on the equipment are reduced, the situation that a large current is used for welding at the very beginning is avoided, the welding current is reduced, and therefore the effect of energy saving is achieved; besides, factors of manual operation are removed, so that product quality is improved.
Description
technical field [0001] The invention relates to the technical field of steel grid plate welding. Background technique [0002] Steel grid welding refers to twisting the steel bar into a twist shape, and then welding the steel bar to the flat steel. At present, most domestic steel grid welding equipment adopts resistance welding technology, which uses high current to generate heat to achieve the purpose of welding. This method has the following problems: the current impact is large during each step of the welding process, and the welding of the workpiece is likely to cause over-melting or even failure to form, and it also causes great harm to the welding power supply, including the rectifier diode and the soft connection device. There are also adverse effects. For products of certain specifications, it is necessary to manually adjust the welding pressure and change the contact resistance of the workpiece to complete, which causes a waste of energy and many unfavorable factor...
Claims
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IPC IPC(8): B23K11/24B23K11/00
CPCB23K11/24
Inventor 武海增
Owner XINXING DUCTILE IRON PIPES CO LTD