CN206316512U - A kind of accumulation energy type stud welding device control circuit and accumulation energy type stud welding device - Google Patents
A kind of accumulation energy type stud welding device control circuit and accumulation energy type stud welding device Download PDFInfo
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- CN206316512U CN206316512U CN201621402279.7U CN201621402279U CN206316512U CN 206316512 U CN206316512 U CN 206316512U CN 201621402279 U CN201621402279 U CN 201621402279U CN 206316512 U CN206316512 U CN 206316512U
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Abstract
The utility model discloses a kind of accumulation energy type stud welding device control circuit and accumulation energy type stud welding device, including：One end is electrically connected with city, the pfc circuit that the other end is connected by a rectification circuit with charge control power supply；The charge control power supply being connected with switch transformer；The switch transformer being connected with storage capacitor；The storage capacitor being connected respectively with computing circuit, control circuit, discharge circuit；The computing circuit being connected with the charge control power supply；The control circuit that detection circuit, trigger detection circuit, thyristor gating circuit, discharge circuit are connected is contacted with welding gun respectively；The welding gun being connected with the control circuit contacts detection circuit；The trigger being connected with the control circuit detects circuit；The thyristor gating circuit being connected with the control circuit；The discharge circuit being connected with the storage capacitor；And for providing the accessory power supply of power supply for whole circuit.The utility model is effectively improved control accuracy and stability.
Description
Technical field
The utility model is related to a kind of accumulation energy type stud welding device control circuit and accumulation energy type stud welding device.
Background technology
Stud welding is a kind of new welding technique grown up upper world's end of the sixties.The general principle of stud welding
It is it is produced welding arc each other by the instantaneous large-current between stud and workpiece, makes the contact surface of stud and workpiece
In molten condition so that stud is quickly pressed onto workpiece surface, operative liquid metal in the presence of welding gun inner spring pressure
Oxide impurity is taken out of while being extruded weld zone, to ensure the quality of welding point, firmly connect with foring
Head.The great advantage of stud welding is to eliminate the complicated processing method of perforating, tapping etc. in machining in the past, welds spiral shell
The firmness of post is high and speed of welding is fast, reduces energy resource consumption, saves manpower, reduces processing cost.
According to the difference of stud welding machine operation principle, stud welding machine is typically divided into capacitor discharge stud welding machine and arc pulling type spiral shell
The major class of post welding machine two.
The drawn arc stud welding machine course of work is；Welding machine starts to produce less striking electric current, by welding base metal surface
After various attachment burnings are removed, then one high current is produced, by stud welding on mother metal.Wherein drawn arc stud welding machine is pressed
Time length required for its welding process, can be divided into two kinds of short cycle arcing and long period arcing；Short cycle arcing equipment weldering
The time connect is shorter, typically within 200 milliseconds, it is adaptable to the weldering nail of thin plate (below 5mm) and diameter smaller (below 10mm)
Between welding；The welding interval of long period arcing is longer, most long up to 2000 milliseconds, it is adaptable to thickness of slab (more than 2mm) and directly
Welding between the weldering nail in footpath larger (more than 10mm).
And the capacitance energy storage type stud welding machine course of work is：Burnt by the striking point striking of stud front end, while by stud
It is welded on mother metal.Capacitance energy storage welding applies in general to welding between thin plate and tingle, is characterized in that the time is short, thermal deformation
Stud welding that is small, being well suited for thin plate, such as Chinese patent 200610052886.X discloses a kind of energy storage arc pulling type screw rod weldering
Machine；It should be understood that existing capacitor discharge stud welding machine is controlled because it is more using using relay simulation, so its
Control accuracy and stability are all greatly reduced, and it is welded disqualification rate can be higher.
The content of the invention
In view of the defect that prior art is present, the purpose of this utility model is to provide for a kind of new accumulation energy type arc stud welding
Connection device control circuit, it is effectively improved the control accuracy and stability of stud welding device so that what it was welded
Qualification rate effectively improves.
To achieve these goals, the technical solution of the utility model：
A kind of accumulation energy type stud welding device control circuit, it is characterised in that including：
One end is electrically connected with city, the pfc circuit that the other end is connected by a rectification circuit with charge control power supply, and it is used for
Carry out inductance compensation；
The charge control power supply being connected with switch transformer, it is used to control the closed loop voltage of whole circuit power and closed
Circular current；
The switch transformer being connected with storage capacitor, it is used for the charging process for controlling storage capacitor；
The storage capacitor being connected respectively with computing circuit, control circuit, discharge circuit；
The computing circuit being connected with the charge control power supply, its be used for collect discharge voltage, discharge current
It is amplified in order to which the charge control power supply adjusts corresponding discharge voltage；
The control that detection circuit, trigger detection circuit, thyristor gating circuit, discharge circuit are connected is contacted with welding gun respectively
Circuit processed；
The welding gun being connected with the control circuit contacts detection circuit, and it is used to detect welding gun activation signal；
The trigger being connected with the control circuit detects circuit, and it is used to detect trigger action signal；
The thyristor gating circuit being connected with the control circuit, it is controlled by the control circuit；
The discharge circuit being connected with the storage capacitor, the discharge process for controlling storage capacitor；
And for providing the accessory power supply of power supply for whole circuit.
Further, as preferred scheme of the present utility model
The pfc circuit includes：The two-stage circuit that active pfc circuit and passive pfc circuit are constituted；It is wherein described passive
Pfc circuit one end is connected with civil power side, and the other end is connected with active pfc circuit；Described active pfc circuit one end and passive PFC
Circuit is connected, and the other end is connected by a rectification circuit with charge control power supply.
Further, as preferred scheme of the present utility model
The active pfc circuit uses step-up switching power supply circuit, and the passive pfc circuit uses inductance element, institute
State rectification circuit and full-wave rectification is carried out using single-phase bridge rectification bridge.
Further, as preferred scheme of the present utility model
The charge control power supply uses single tube forward power circuit.
It is preferred that, the single tube forward power circuit includes：PFC control module FAN4800, insulation FET
IXTQ22N50P, voltage-stabiliser tube IN5245, some diodes and some resistance, some capacity cells.
Further, as preferred scheme of the present utility model
Another object of the present utility model is to provide for a kind of accumulation energy type stud welding device, and it includes above-mentioned accumulation energy type spiral shell
Post welder control circuit.
Further, as preferred scheme of the present utility model
Compared with prior art, the beneficial effects of the utility model：
1. the utility model makes the DC voltage that final rectification is exported with passive PFC circuit by the way that reasonable employment is active
More stable, power factor is higher；
2. the utility model, by charging voltage and current feedback to arithmetic unit, makes charging by using closed loop control algorithm
Voltage is more accurate.
Brief description of the drawings
Fig. 1 is the corresponding circuit theory diagrams of device described in the utility model；
Fig. 2 is the corresponding pfc circuit instance graph of device described in the utility model；
Fig. 3 is the corresponding welding gun contact detection circuit of device described in the utility model, trigger detection circuit, control machines
Circuit and discharge circuit instance graph；
Fig. 4 is the corresponding auxiliary power circuit instance graph of device described in the utility model；
Fig. 5 is the corresponding charge control power supply of device described in the utility model and switch transformer instance graph；
Fig. 6 is the main process flow steps figure that device described in the utility model realizes control process.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing, to this reality
It is further elaborated with new.
As shown in figure 1, the utility model provides a kind of stable, accurate, efficient energy-storage type double screw-bolt welder, it is wrapped
Include：Pfc circuit, charge control power supply, switch transformer, storage capacitor, computing circuit, control circuit, welding gun contact detection electricity
Road, trigger detection circuit, thyristor gating circuit, discharge circuit, accessory power supply；
As shown in Fig. 2 the pfc circuit, for carrying out inductance compensation, its one end is electrically connected with city, and the other end passes through one
Rectification circuit is connected with charge control power supply；Further, as preferred scheme of the present utility model, the pfc circuit includes：It is main
The two-stage circuit that dynamic pfc circuit and passive pfc circuit are constituted；Wherein described passive pfc circuit one end is connected with civil power side, separately
One end is connected with active pfc circuit；Described active pfc circuit one end is connected with passive pfc circuit, and the other end passes through a rectified current
Road is connected with charge control power supply.Further, as preferred scheme of the present utility model, its mainly by active PFC, passive PFC,
Rectifier bridge KBG608G and some resistance, capacity cell are constituted, with realize 220V alternating currents by passive and active pfc circuit with
And rectification circuit output direct current supplies electricity to Switching Power Supply；It is preferred that the passive pfc circuit use inductance element, such as use one piece
3mH inductance, is made up of inside it winding copper cash outside polylith silicon steel sheet, is inputted using inductance compensation method by making exchange
Fundamental current and voltage between phase difference reduce and improve power factor, its is simple in construction, good stability；The active PFC
Circuit uses step-up switching power supply circuit, and it is made up of the element such as high-frequency inductor LF2318, electric capacity C26 and FAN4800, should
The advantage of circuit is：The high and low loss of power factor and it is highly reliable, have a very wide input voltage range, and due to output DC electricity
Ripple very little is embossed, therefore use need not use the filter capacitor of very Large Copacity；The rectification circuit uses single-phase bridge rectification
Bridge KBG608G carries out full-wave rectification.
The switch transformer is used for the charging process for controlling storage capacitor, and it is connected with storage capacitor；
The storage capacitor is welding energy storage, and it is connected with computing circuit, control circuit, discharge circuit respectively；Enter one
Step, as preferred scheme of the present utility model, the storage capacitor is made up of 3 22000uF electric capacity, and maximum can provide welding energy
Measure as 26400J.
The computing circuit is amplified in order to the charge control for the discharge voltage to collecting, discharge current
Power supply adjusts corresponding discharge voltage, and it is connected with the charge control power supply；Further, as of the present utility model preferred
Scheme, the computing circuit is made up of operational amplifier TLV2374, optocoupler PC123 and some resistance capacitances.It is used to gather
Feedback signal is conveyed to by the discharge voltage that arrives, electric current after two-stage calculation amplifier amplification by optocoupler PC123
FAN4800, so that FAN4800 adjusts discharge voltage.
The control circuit is mainly used in collection charging voltage signal, trigger action signal, monitoring resistor signal, and output can
Control silicon trigger signal, discharge signal etc., its contact respectively with welding gun detection circuit, trigger detect circuit, thyristor gating circuit,
Discharge circuit is connected；Further, as preferred scheme of the present utility model, the control circuit by ATmega48 single-chip microcomputers,
Two-way eight groups of bus transceiver 74LS245 and operational amplifier TLV2374 composition.
As shown in figure 3, welding gun contact detection circuit is used to detect welding gun activation signal, itself and the control circuit phase
Connection；
The trigger detection circuit is used to detect trigger action signal and the monolithic by trigger signal transmission to control circuit
Machine, it is connected with the control circuit；When the trigger of welding gun is detained, optocoupler TPL281 conductings, single-chip microcomputer can obtain trigger
Action signal.
The thyristor gating circuit for being controlled by the control circuit；Further, as preferred side of the present utility model
Case, thyristor gating circuit is made up of triode 2SC4672 and transformer and diode and some resistance, electric capacity；Work as monolithic
When machine sends trigger signal and makes triode ON, transformer is started working, then thyristor gating circuit is triggered.
The discharge circuit is used for the discharge process for controlling storage capacitor, is connected with the storage capacitor；Further, make
For preferred scheme of the present utility model, the discharge circuit is made up of optocoupler TLP281, voltage-stabiliser tube, MOSFET and resistance capacitance；
After single-chip microcomputer detects under capacitance voltage timing and shutdown, single-chip microcomputer sends control signal, by corresponding optic coupling element and
Voltage stabilizing tube elements, make MOSFET open-minded, then now the discharge circuit starts electric discharge.
As shown in figure 4, the accessory power supply is used to provide power supply for whole circuit, it is mainly control circuit, computing electricity
Road and charge control power supply provide chip operation power supply, further, are used as preferred scheme of the present utility model, the accessory power supply
Circuit includes single-ended isolated current source PWM device UC3842, field-effect triode IRFBG30, optocoupler H11A817A, steady
Pressure pipe TL431C, MC78M05CDT and some diodes and resistance capacitance composition.
As shown in figure 5, the charge control power supply, closed loop voltage and closed loop current for controlling whole circuit power,
It is connected with switch transformer；Further, as preferred scheme of the present utility model, charge control power supply controls mould by PFC
Block FAN4800, insulation FET IXTQ22N50P, voltage-stabiliser tube IN5245, diode and resistance capacitance composition single tube normal shock
Power supply, it controls the closed loop voltage and closed loop current of power supply by controlling FAN4800 input signal.
Another object of the present utility model is to provide for a kind of accumulation energy type stud welding device, and it includes above-mentioned accumulation energy type spiral shell
Post welder control circuit.
Described device also includes being used for the display button circuit that associated control parameters set and change and accordingly shown.
The corresponding closed loop control process of device described in the utility model is：
As Fig. 6, access civil power 220V carry out inductance compensation by the active and passive PFC two-stage circuit of pfc circuit
Afterwards；Power supply signal is sent to switch transformer, FAN4800 sending signal of the single-chip microcomputer of circuit to charge control power supply is controlled,
Switch transformer is worked, and then cause storage capacitor charging；At the same time, the voltage and current signal of charging process is fed back
To computing circuit, by the calculating of computing circuit, if capacitance voltage is not reaching to set solderable voltage, continue to
Storage capacitor charges, so repeatedly, until voltage reaches solderable requirement；When capacitance voltage reaches solderable voltage, monolithic
FAN4800 sending signal of the machine to charge control power supply, makes switch transformer be stopped, and is no longer charged to storage capacitor；This
When single-chip microcomputer wait welding gun contact and trigger signal, if now welding gun contacting metal plate and cocking is that welding gun connects
Touch detection electric circuit inspection and arrive welding gun activation signal, trigger detection electric circuit inspection is to trigger action signal, then single-chip microcomputer is to controllable silicon
Triggers circuit sends trigger signal, controls discharging circuit conduction, and storage capacitor is discharged metallic plate by stud, due to electric discharge electricity
Stream is very big, and now stud bottom surface and metallic plate contact surface are in molten condition, then stud is pressed onto on metallic plate by spring, complete
Welding process.
The above, only the utility model preferably embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model is disclosed, according to this practicality
New technical scheme and its utility model design are subject to equivalent or change, should all cover in protection model of the present utility model
Within enclosing.
Claims (4)
1. a kind of accumulation energy type stud welding device control circuit, it is characterised in that including：
One end is electrically connected with city, the pfc circuit that the other end is connected by a rectification circuit with charge control power supply, and it is used to carry out
Inductance compensation；
The charge control power supply being connected with switch transformer, its closed loop voltage for being used to control whole circuit power and closed loop electricity
Stream；
The switch transformer being connected with storage capacitor, it is used for the charging process for controlling storage capacitor；
The storage capacitor being connected respectively with computing circuit, control circuit, discharge circuit；
The computing circuit being connected with the charge control power supply, its be used for collect discharge voltage, discharge current carry out
It is exaggerated in order to the charge control power supply and adjusts corresponding discharge voltage；
The control electricity that detection circuit, trigger detection circuit, thyristor gating circuit, discharge circuit are connected is contacted with welding gun respectively
Road；
The welding gun being connected with the control circuit contacts detection circuit, and it is used to detect welding gun activation signal；
The trigger being connected with the control circuit detects circuit, and it is used to detect trigger action signal；
The thyristor gating circuit being connected with the control circuit, it is controlled by the control circuit；
The discharge circuit being connected with the storage capacitor, the discharge process for controlling storage capacitor；
And for providing the accessory power supply of power supply for whole circuit.
2. circuit according to claim 1, it is characterised in that：
The pfc circuit includes：The two-stage circuit that active pfc circuit and passive pfc circuit are constituted；Wherein described passive PFC
Circuit on one side is connected with civil power side, and the other end is connected with active pfc circuit；Described active pfc circuit one end and passive pfc circuit
Connection, the other end is connected by a rectification circuit with charge control power supply.
3. circuit according to claim 2, it is characterised in that：
The active pfc circuit uses step-up switching power supply circuit, and the passive pfc circuit uses inductance element, described whole
Current circuit carries out full-wave rectification using single-phase bridge rectification bridge.
4. a kind of accumulation energy type stud welding device, it is characterised in that including：Energy storage as described in claim 1-3 any one
Type stud welding device control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402279.7U CN206316512U (en) | 2016-12-20 | 2016-12-20 | A kind of accumulation energy type stud welding device control circuit and accumulation energy type stud welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621402279.7U CN206316512U (en) | 2016-12-20 | 2016-12-20 | A kind of accumulation energy type stud welding device control circuit and accumulation energy type stud welding device |
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| Publication Number | Publication Date |
|---|---|
| CN206316512U true CN206316512U (en) | 2017-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621402279.7U Active CN206316512U (en) | 2016-12-20 | 2016-12-20 | A kind of accumulation energy type stud welding device control circuit and accumulation energy type stud welding device |
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| Country | Link |
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| CN (1) | CN206316512U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001900A (en) * | 2019-12-26 | 2020-04-14 | 江门市保值久机电有限公司 | Welding gun control circuit |
| CN115156670A (en) * | 2022-07-01 | 2022-10-11 | 浙江上势自动焊接科技有限公司 | Wireless control method of stud welding equipment |
-
2016
- 2016-12-20 CN CN201621402279.7U patent/CN206316512U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111001900A (en) * | 2019-12-26 | 2020-04-14 | 江门市保值久机电有限公司 | Welding gun control circuit |
| CN115156670A (en) * | 2022-07-01 | 2022-10-11 | 浙江上势自动焊接科技有限公司 | Wireless control method of stud welding equipment |
| CN115156670B (en) * | 2022-07-01 | 2023-08-04 | 浙江上势自动焊接科技有限公司 | Wireless control method of stud welding equipment |
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