CN210878040U - Energy storage type stud welding machine adopting capacitor current-limiting charging - Google Patents
Energy storage type stud welding machine adopting capacitor current-limiting charging Download PDFInfo
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- CN210878040U CN210878040U CN201921888056.XU CN201921888056U CN210878040U CN 210878040 U CN210878040 U CN 210878040U CN 201921888056 U CN201921888056 U CN 201921888056U CN 210878040 U CN210878040 U CN 210878040U
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Abstract
The utility model provides an energy storage type stud welding machine adopting capacitance current-limiting charging, which comprises a control panel, a drive panel, a field effect tube discharging circuit, a power switch and a filter circuit, a single-phase step-down transformer, a film capacitance current-limiting module, a bidirectional thyristor module, a single-phase rectifier bridge module, an electrolytic capacitance energy storage module, a thyristor discharging module, a welding gun and a grounding clamp, wherein the control panel adopts a LED nixie tube to display welding parameters, and the control panel can set the numerical value of welding voltage through keys; the drive board is electrically connected with the control board, receives control board signals and drives the effect tube discharge circuit, the power switch, the filter circuit, the single-phase step-down transformer, the thin film capacitor current-limiting module, the bidirectional thyristor module, the single-phase rectifier bridge module, the electrolytic capacitor energy storage module and the thyristor discharge module. The utility model discloses a charging circuit has adopted the electric capacity current-limiting, and electric capacity is not the power consumption component, so the relative resistance current-limiting is more energy-conserving.
Description
Technical Field
The invention belongs to the field of welding machines, and particularly relates to an energy storage type stud welding machine adopting capacitor current-limiting charging.
Background
The energy-storing stud welding machine consists of welding power source, rectifier, energy-storing capacitor, controller, welding gun, ground wire pliers, welding cable and other parts. The welder obtains voltage by controlling the charging of the capacitor, and the discharge time of the thyristor after completing the welding is 1-3 milliseconds. The method has the characteristics of short time, small thermal deformation, suitability for stud welding of thin plates, and wide application in industries such as shipbuilding, automobiles, electric control cabinets, curtain walls, elevator accessories and the like. The existing energy storage stud welding machine basically adopts a method of charging a capacitor by adopting resistance current limiting, the resistance is an energy consumption device, and when the machine works, the current limiting resistance can seriously heat, so that the energy is greatly wasted, and the safety risk of causing fire exists; the existing energy storage stud welding machine adopts a relay to control charging and discharging, and a mechanical contact is easy to arc and damage under the condition of high current, so that the service life of the welding machine is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides an energy storage type stud welding machine adopting capacitance current-limiting charging, which can solve the problems provided in the background technology; the energy storage type stud welding machine has the characteristics of energy conservation, safety, reliability and long service life.
In particular to an energy storage type stud welding machine adopting capacitance current limiting charging, which comprises a control panel, a drive plate, a field effect tube discharging circuit, a power switch, a filter circuit, a single-phase step-down transformer, a thin film capacitance current limiting module, a bidirectional thyristor module, a single-phase rectifier bridge module, an electrolytic capacitance energy storage module, a thyristor discharging module, a welding gun and a grounding clamp,
the control panel adopts an LED nixie tube to display welding parameters, and the control panel can set the numerical value of welding voltage through a key;
the drive board is electrically connected with the control board to form a control system, and receives control board signals and drives an effect tube discharge circuit, a power switch and filter circuit, a single-phase step-down transformer, a thin film capacitor current-limiting module, a bidirectional thyristor module, a single-phase rectifier bridge module, an electrolytic capacitor energy-storage module and a thyristor discharge module;
the power switch and the filter circuit are used for carrying out switch control on a power supply and carrying out filter pretreatment on interference from a power grid;
the single-phase step-down transformer is connected with the power switch and the filter circuit and is configured to supply power to the charging loop and the driving board;
the thin film capacitor current limiting module is connected with the single-phase step-down transformer and is configured for limiting current in a charging loop;
the bidirectional thyristor module is connected with the thin film capacitor current limiting module, and the bidirectional thyristor module is configured to be used as a switch of a charging loop;
the single-phase rectifier bridge module is connected with the bidirectional controllable silicon module and is configured to convert alternating current into direct current;
the electrolytic capacitor energy storage module is connected with the single-phase rectifier bridge module and is configured for storing energy;
the controllable silicon discharging module is connected with the electrolytic capacitor energy storage module and is configured to realize instant discharging of the electrolytic capacitor energy storage module under the driving of the driving electric plate;
the field effect tube discharging circuit is respectively connected with the electrolytic capacitor energy storage module and the driving board; the grounding clamp is connected with the cathode of the electrolytic capacitor energy storage module; and the welding gun is connected with the output of the silicon controlled module.
Preferably, the control system is respectively connected with the single-phase step-down voltage transformation module, the bidirectional thyristor module, the field-effect tube discharge circuit and the thyristor discharge module.
Preferably, the welding gun is connected with a welding stud.
Preferably, the electrolytic capacitor energy storage module is provided with a voltage threshold, and when the charging voltage of the electrolytic capacitor energy storage module is greater than the voltage threshold, the control system controls the field-effect tube discharge circuit to slowly discharge the electrolytic capacitor energy storage module until the voltage threshold is reached.
Preferably, the power switch and filter circuit, the single-phase step-down transformer, the thin film capacitor current-limiting module, the bidirectional thyristor module, the single-phase rectifier bridge module, the electrolytic capacitor energy storage module, the thyristor discharge module and the welding gun are sequentially connected, and the grounding clamp is connected with the negative electrode of the electrolytic capacitor energy storage module to form a main loop.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the charging loop of the utility model adopts the capacitance current limiting, and the capacitance is not an energy consumption element, so the relative resistance current limiting is more energy-saving;
(2) the utility model is relatively safer because the capacitor current limiting has no energy loss and can not generate high temperature like the resistance current limiting;
(3) the charging and discharging loops of the utility model are controlled by the silicon controlled rectifier and the field effect transistor, no mechanical contact is needed, and the service life of the machine is prolonged;
(4) the utility model adopts high-precision single chip microcomputer control, the voltage is more accurate, the welding spot is more beautiful, and the consistency is better; moreover, the filter circuit is adopted to filter ripple interference from a power grid, so that the anti-interference capability of the machine is improved;
drawings
Fig. 1 is a schematic structural view of an electrical component of the present invention;
FIG. 2 is a schematic circuit diagram of the present invention;
fig. 3 is a block diagram illustrating the structure of the present invention.
Detailed Description
Exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
Specifically, the utility model provides an adopt energy storage stud welding machine that electric capacity current-limiting charged, as shown in fig. 1 to fig. 3, it includes control panel 2, drive plate 1, field effect transistor discharge circuit 3, AC220V switch and filter circuit 4, single-phase step-down transformer 5, film electric capacity current-limiting module 6, bidirectional thyristor module 7, single-phase rectifier bridge module 8, electrolytic capacitor energy storage module 9, silicon controlled rectifier discharge module 10, welder 11 and ground clamp 12.
The control panel 2 can set charging voltage through keys, the charging voltage is displayed in real time by adopting an LED nixie tube, and the states of the welding machine such as power-on, charging, full charging, working and the like are respectively indicated through an LED indicating lamp; receiving a welding gun switching signal, and outputting a charging, discharging and welding control signal; and the singlechip AD detects the voltage and displays the voltage in real time.
The drive board 1 is connected with the control board 2 through a flat cable, supplies power to the control board 2, receives a control signal of the control board 2, drives the bidirectional thyristor module 7 to be switched on, and controls a charging process; driving the silicon controlled discharge module 10 to control the welding process; the field effect tube discharge circuit 3 is driven to execute a key decompression discharge command of the control panel 2; is connected with a single-phase step-down transformer 5 to provide direct current power supply for the control panel 2 and power supply for the driving circuit.
The AC220V power switch and the filter circuit 4 control the power switch to supply power to the cooling fan, filter 220V alternating current and enhance the anti-interference capability of the system; connected to a single-phase step-down transformer 5, provides a clean input voltage.
The single-phase step-down transformer 5 is connected with the AC220V power switch and the filter circuit 4, and is used for stepping down 220V input alternating voltage into two groups of 175V and 15V, and respectively supplying power to the capacitor charging loop and the control system 13;
the thin film capacitor current limiting module 6 is connected with the single-phase step-down transformer 5 and is used for limiting the current of a charging loop;
the bidirectional silicon controlled rectifier module 7 is connected with the thin film capacitor current limiting module 6 and is driven by the driving board 1 to control the charging of the charging loop to be turned off;
the single-phase rectifier bridge module 8 is connected with the bidirectional controllable silicon module 7 and is used for rectifying alternating current into direct current to provide available charging voltage;
the electrolytic capacitor energy storage module 9 is connected with the single-phase rectifier bridge module 8, receives charging and stores energy corresponding to set voltage, and waits for welding discharge;
the controllable silicon discharging module 10 is connected with the electrolytic capacitor energy storage module 9 and executes a discharging welding command of the control system 13;
the grounding clamp 12 is connected with the cathode of the electrolytic capacitor energy storage module 9, and is used for bonding to a base material during welding.
And the welding gun 11 is connected with the anode of the silicon controlled discharge module 10, and is loaded with a welding stud to perform welding.
And the field effect tube discharge circuit 3 is connected with the electrolytic capacitor energy storage module 9 and the drive board 1 and is used for executing a key decompression discharge command of the control board 2 and slowly discharging the electrolytic capacitor after the machine is powered off so as to ensure safety.
The specific working process is as follows: the AC220V50HZ alternating current is controlled and filtered by an AC220V 220V power switch and a filter circuit 4, is reduced in voltage by a single-phase step-down transformer 5, and respectively outputs AC175V and AC15V alternating current, the AC15V supplies power to a control system 13, the AC175V is limited in current by a thin film capacitor current limiting module 6, is controlled by a bidirectional controllable silicon module 7, is rectified by a single-phase rectifier bridge module 8 to obtain direct current voltage, and is connected with the positive electrode and the negative electrode of an electrolytic capacitor energy storage module 9 to charge an electrolytic capacitor, and the charging voltage is accurately controlled by the control system 13.
If the electrolytic capacitor energy storage module 9 is charged excessively and exceeds the set voltage threshold, the control system 13 can slowly discharge the capacitor by controlling the field effect transistor discharge circuit 3 until the set voltage value is reached. After receiving a welding gun switch closing signal, the control system 13 immediately drives the silicon controlled discharge module 10 to be conducted, and a closed discharge loop is formed by the welding gun, the base metal and the grounding clamp to complete stud welding, the discharge process only needs 3-5 milliseconds, and the whole process is very smooth.
The utility model discloses can weld M3-M10's special double-screw bolt, adopt single chip software control, control accuracy is high, stable, reliable, can weld multiple metals such as brass, stainless steel, carbon steel, aluminium and alloy, but wide application in trades such as automobile manufacturing, shipbuilding, steel construction, panel beating processing, kitchen utensils and appliances, elevator, regulator cubicle, aluminium curtain wall, instrument and meter manufacturing.
Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides an energy storage formula stud welding machine that adopts electric capacity current-limiting to charge which characterized in that: which comprises a control panel, a drive panel, a field effect tube discharge circuit, a power switch and a filter circuit, a single-phase step-down transformer, a thin film capacitor current-limiting module, a bidirectional thyristor module, a single-phase rectifier bridge module, an electrolytic capacitor energy storage module, a thyristor discharge module, a welding gun and a grounding clamp,
the control panel adopts an LED nixie tube to display welding parameters, and the control panel can set the numerical value of welding voltage through a key;
the drive board is electrically connected with the control board to form a control system, and receives control board signals and drives an effect tube discharge circuit, a power switch and filter circuit, a single-phase step-down transformer, a thin film capacitor current-limiting module, a bidirectional thyristor module, a single-phase rectifier bridge module, an electrolytic capacitor energy-storage module and a thyristor discharge module;
the power switch is used for switching control of a power supply, and the filter circuit is used for filtering pretreatment of interference from a power grid;
the single-phase step-down transformer is connected with the power switch and the filter circuit, and is configured to supply power to the charging circuit and the driving board;
the thin film capacitor current limiting module is connected with the single-phase step-down transformer, and is configured to limit current in a charging loop;
the bidirectional thyristor module is connected with the thin film capacitor current limiting module, and the bidirectional thyristor module is configured to be used as a switch of a charging loop;
the single-phase rectifier bridge module is connected with the bidirectional controllable silicon module and is configured to convert alternating current into direct current;
the electrolytic capacitor energy storage module is connected with the single-phase rectifier bridge module and is configured for storing energy;
the controllable silicon discharging module is connected with the electrolytic capacitor energy storage module, and the controllable silicon discharging module is configured to realize instant discharging of the electrolytic capacitor energy storage module under the driving of the driving electric plate;
the field effect tube discharging circuit is respectively connected with the electrolytic capacitor energy storage module and the driving board; the grounding clamp is connected with the negative electrode of the electrolytic capacitor energy storage module; and the welding gun is connected with the output of the silicon controlled module.
2. The energy storage type stud welding machine adopting the capacitive current-limiting charging mode as claimed in claim 1, wherein: the control system is respectively connected with the single-phase step-down voltage transformation module, the bidirectional thyristor module, the field-effect tube discharge circuit and the thyristor discharge module.
3. The energy storage type stud welding machine adopting the capacitive current-limiting charging mode as claimed in claim 1, wherein: the welding gun is connected with a welding stud.
4. The energy storage type stud welding machine adopting the capacitive current-limiting charging mode as claimed in claim 2, wherein: the electrolytic capacitor energy storage module is provided with a voltage threshold, and when the charging voltage of the electrolytic capacitor energy storage module is larger than the voltage threshold, the control system slowly discharges the electrolytic capacitor energy storage module by controlling the field effect tube discharge circuit until the voltage threshold is reached.
5. The energy storage type stud welding machine adopting the capacitive current-limiting charging mode as claimed in claim 1, wherein: the power switch, the filter circuit, the single-phase step-down transformer, the thin-film capacitor current-limiting module, the bidirectional thyristor module, the single-phase rectifier bridge module, the electrolytic capacitor energy storage module, the thyristor discharge module and the welding gun are sequentially connected, and the grounding clamp is connected with the negative electrode of the electrolytic capacitor energy storage module to form a main loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921888056.XU CN210878040U (en) | 2019-11-05 | 2019-11-05 | Energy storage type stud welding machine adopting capacitor current-limiting charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921888056.XU CN210878040U (en) | 2019-11-05 | 2019-11-05 | Energy storage type stud welding machine adopting capacitor current-limiting charging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210878040U true CN210878040U (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921888056.XU Active CN210878040U (en) | 2019-11-05 | 2019-11-05 | Energy storage type stud welding machine adopting capacitor current-limiting charging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210878040U (en) |
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2019
- 2019-11-05 CN CN201921888056.XU patent/CN210878040U/en active Active
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