CN102009243B - Fixed-heating-quantity electric iron device and control method - Google Patents
Fixed-heating-quantity electric iron device and control method Download PDFInfo
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- CN102009243B CN102009243B CN201010521796A CN201010521796A CN102009243B CN 102009243 B CN102009243 B CN 102009243B CN 201010521796 A CN201010521796 A CN 201010521796A CN 201010521796 A CN201010521796 A CN 201010521796A CN 102009243 B CN102009243 B CN 102009243B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to a fixed-heating-quantity electric iron device and a control method. The fixed-heating-quantity electric iron device comprises a keyboard, a display screen, a control circuit, a power-rectifier main loop circuit and an electric-iron resistance wire, wherein the control circuit is composed of a keyboard input circuit, an MUC control circuit, a PWM (Pulse-Width Modulation) drive circuit, a temperature detecting circuit, a display circuit and a direct-current power supply supplying power for the control circuit. The device sets and controls the amount of pulses outputted by PWM signals by the keyboard to enable four IGBI (Insulated Gate Bipolar Translator) elements T1, T4 and T2, T3 to be connected and disconnected respectively, electric energy is transferred to an electric iron for heating the resistance wire through capacitance coupling, and the electric iron is controlled to heat the resistance wire for generating fixed heating quantity by controlling the frequency of connection and disconnection of the four IGBI elements T1, T4 and T2, T3. The method controls the duty ratio of signals by regulating high-frequency PWM, drives the IGBI, generates a high-frequency power supply to heat the electric-iron resistance wire, and changes the temperature of the fixed-heating-quantity electric iron in a working mode for regulating the duty ratio.
Description
Technical field
The present invention relates to a kind of decide heat electric iron arrangement and control method, belong to the electronic welding technical field of tools.
Background technology
In the electronic welding process, electric iron is the soldering appliance of using always, makes temperature raise because heat discharges in the welding, and welding welding material and workpiece arrive the welding purpose.But in welding process technology,, usually need control the time of contact of welding material and workpiece, and reach welding quality in order to guarantee welding quality.But, occur the workpiece that is soldered is damaged because soldering appliance and operator's qualification is long because of time of contact often.In welding procedure, weld similar lead and film workpiece, during like the welding of touch-screen, LCD lead wire, conventional (comprising constant temperature) electric iron is scalded film easily.The present invention adopts through deciding heat electric iron arrangement and control method, can effectively avoid conventional electric iron to scald film easily.
At present, in the electronic welding process, soldering appliance electric iron commonly used mainly contains following several kinds of forms:
(1) electric iron has no control, and welding quality leans on operating personnel's qualification to control fully.The workpiece of this type electric iron welding often belongs to extensive form, is not suitable for the high workpiece of welding process requirement.(2) in the big standard circuit welding, often adopt the crest welding, it can improve welding efficiency and welding quality (relevant with flux), but it can not weld similar welding like touch-screen, LCD lead wire.(3) constant temperature electric iron, in welding process technology, though temperature is constant, solder horn contacts with workpiece for a long time, still can workpiece be damaged, and especially requires the relatively more accurate workpiece of welding.(4) the hot gas welding bonding tool usually is used for welding accurate surface mount elements, is inapplicable for similar welding like touch-screen, LCD lead wire.
Summary of the invention
One of the object of the invention produces accurate heat output for a kind of the setting through parameter is provided, and makes electric iron on the basis of certain heat, produce temperature, welding work pieces; Two of the object of the invention is to provide a kind of method, through changing the dutycycle of high-frequency PWM control signal, removes to drive IGBT (insulated gate bipolar transistor), produces high frequency electric source electric iron is heated.
Technical scheme of the present invention is, saidly decides the heat electric iron arrangement and comprises keyboard, display screen, control circuit, power rectifier main loop circuit and electric iron resistance wire.Control circuit is made up of the dc source of keyboard input circuit, MUC control circuit, PWM drive circuit, temperature sensing circuit, display circuit and supply control circuit.Said device is through the number of pulses of keyboard to set up control pwm signal output, and the fixed-frequency of pwm control signal is 40KHz; The control signal of PWM is divided into two groups, is A1, A2 and B1, B2; They respectively with four IGBT of full-bridge (insulated gate bipolar transistor) T1, T4 and T2, T3 connect, the number of pulses of control pwm signal output; Make four IGBT elements T 1, T4 and T2, T3 is conducting and shutoff respectively, and electric energy flows to the electric iron resistive heater through Capacitance Coupled; Through controlling four IGBT elements T 1, T4 and T2, the number of times of T3 conducting and shutoff and arrive control electric iron resistive heater and produce and decide heat.
The present invention adopts direct rectifying and wave-filtering with the interchange 220v of 50Hz; Wherein will put filtered direct current in order through simple process such as dividing potential drop, voltage stabilizing, filtering; Be transformed into the needed dc source of control element (MUC control circuit power supply is direct current 5V, and PWM drive circuit power supply is direct current 15V); Direct and four IGBT elements T 1 of four IGBT control valves of full-bridge behind the interchange 220v rectifying and wave-filtering, T4 and T2, T3 connect shown in figure one; Four IGBT elements T 1, T4 and T2, the control utmost point of T3 respectively with the signal A1 of the control drive circuit of PWM; A2 and B1, B2 connects; The T1 of four IGBT control valves, T4 and T2, T3 conducting and ending respectively produces heat through capacitor C 2 couplings with the resistive heater that electric flux passes to electric iron; Set working condition through keyboard circuit; Set the number of pulses that control PWM drives signal output, fixed-frequency is 40KHz, and dutycycle is 35%; Handle internal processes through MUC control and calculate, demonstrate with digital form through display circuit and produce what of heat; Produce heat in the more visual control welding process, help similar welding like touch-screen, LCD lead wire.
The present invention removes to drive IGBT through regulating the method for high-frequency PWM control signal dutycycle, produces high frequency electric source to the heating of electric soldering iron resistance wire, changes the temperature of deciding the heat electric iron through the working method of regulating dutycycle.Pass through keyboard to set up; Make the electric iron of deciding heat be operated in duty normal time; The keyboard to set up circuit is that the MUC control circuit makes that the PWM drive circuit is that continuous output frequency is fixed as 40KHz, changes the temperature of deciding the heat electric iron through the working method of regulating dutycycle, through temperature sensing circuit, regulates control PWM and drives signal dutyfactor; Temperature is higher than design temperature, regulates control PWM and drives the signal dutyfactor minimizing; Temperature is lower than design temperature; Regulate control PWM and drive the signal dutyfactor increase; The dutycycle that reduces or increase is according to the temperature detection signal supplemental characteristic; Realize through the software programming of MUC control circuit, and through display circuit design temperature and actual temperature are presented on the display screen by the MUC control circuit.Through regulating the method for work of dutycycle, can make electric iron be heated to the temperature of setting rapidly, and can accurately maintain setting steady temperature duty that dutyfactor adjusting method is used for hot surely constant temperature electric iron and has certain energy-saving effect.
The beneficial effect of the present invention and prior art comparison is; The present invention adopts and decides the heat electric iron arrangement heat of electric iron is controlled; Can effectively avoid conventional electric iron to scald film easily, thereby guarantee the welding quality of electric iron, significantly reduce the scrappage of welding.
The present invention is applicable to the electric soldering iron that needs to decide heat control welding quality.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
The specific embodiment
The specific embodiment of the present invention is shown in accompanying drawing, and the contrast accompanying drawing is done further explain to the present invention below.
A kind ofly decide the heat electric iron arrangement, form by keyboard, display screen, control circuit, power rectifier main loop circuit and electric iron resistance wire.The 220v alternating current passes through the AC/DC rectification circuit, and carries out Filtering Processing by capacitor C 1, obtains the DC voltage about 310V, and DC voltage is through four full-bridge IGBT control valve elements T 1, and T4 and T2, T3 open and end to resistive heater and heat; When TI and T4 conducting, when T2 and T3 ended, C2 heated heating resistor through coupling capacitance; When T2 and T3 conducting, when T1 and T4 ended, electric flux heated heating resistor through coupling capacitance C2 equally; And TI and T4 conducting or end, T2 and T3 by or conducting, set according to the keyboard input circuit by the MUC control circuit, realize through the PWM drive circuit.The energy of output is through DC voltage, the quantity of pwm pulse signal dutycycle, frequency and pwm pulse signal, quantity of heat given up Q=U
0I
0T, wherein U
0Be output voltage, U
0=KU, K are dutycycle, and U is 310 DC voltages; I
0Be output current, confirm by load; T is the number of pulses of given certain frequency, and frequency is 40KHz, and dutycycle is 35% to be set by keyboard input and to provide; It is a setting thermal unit that per 10000 pulses are set in software programming, and the heating electric iron is 30W, and the electric iron heating produces certain heat like this; Set twice, three inferior generation heating heat difference, the keyboard input is set and can be uninterrupted setting continuously; Make electric iron produce the setting heat, uninterrupted continuous the generation kept the needs of welding procedure at every turn;
If the heating electric iron is set at constant temperature, its realization is such;
Under the constant temperature working method, through the keyboard input circuit, the welding temperature that input is set; It is 40KHz that the MUC control circuit drives pwm circuit generation frequency, and dutycycle changes with the height of electric iron temperature, and temperature sensing circuit detects the electric iron temperature signal through conversion; Be input to the MUC control circuit, and go out the difference of design temperature and actual temperature through computed in software, with this as regulating the variation that PWM drives signal dutyfactor; Temperature is high, and dutycycle is little; Temperature is low, and dutycycle is big.Recently regulating heating-up temperature through duty, to produce heat speed fast, and the control temperature accuracy is high; Under the situation of different duty, when T2 and T3 conducting, when T1 and T4 end, perhaps work as T2 and T3 and end, when T1 and T4 conducting, electric current all can be through 2 pairs of heating resistors heating of coupling capacitor C; And the size of electric current and T2 and T3 conducting; T1 and T4 by or T2 and T3 end, the dutycycle of T1 and T4 conducting has direct contact, through regulating four IGBT elements T 1; T4 and T2; The T3 control utmost point drives the variation of the dutycycle of signal PWM, and it is fast to realize that heating-up temperature produces heat speed, the precision of raising and control thermostat temperature.
Claims (1)
1. decide the heat electric iron arrangement for one kind; Comprise keyboard, display screen, control circuit, power rectifier main loop circuit and electric iron resistance wire; It is characterized in that said control circuit is made up of the dc source of keyboard input circuit, MUC control circuit, PWM drive circuit, temperature sensing circuit, display circuit and supply control circuit; Number of pulses through the output of keyboard to set up control pwm signal; Make four IGBT elements T 1, T4 and T2, T3 is conducting and shutoff respectively; Electric energy flows to the electric iron resistive heater through Capacitance Coupled; Through controlling four IGBT elements T 1, T4 and T2, the number of times of T3 conducting and shutoff and control the electric iron resistive heater and produce and decide heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010521796A CN102009243B (en) | 2010-10-27 | 2010-10-27 | Fixed-heating-quantity electric iron device and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010521796A CN102009243B (en) | 2010-10-27 | 2010-10-27 | Fixed-heating-quantity electric iron device and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102009243A CN102009243A (en) | 2011-04-13 |
| CN102009243B true CN102009243B (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010521796A Expired - Fee Related CN102009243B (en) | 2010-10-27 | 2010-10-27 | Fixed-heating-quantity electric iron device and control method |
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| CN (1) | CN102009243B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2990807B1 (en) * | 2012-05-16 | 2015-11-27 | Peugeot Citroen Automobiles Sa | ELECTRONIC DEVICE FOR PROTECTING AN ELECTRICAL CONDUCTOR AND METHOD FOR CONTROLLING SUCH A DEVICE |
| CN105033393A (en) * | 2015-08-06 | 2015-11-11 | 深圳市尚进电子科技有限公司 | Direct-current heating circuit and electric soldering iron formed by same |
| CN106001834A (en) * | 2016-07-27 | 2016-10-12 | 深圳市唐誉科技有限公司 | Electric soldering iron control system |
| CN111299748B (en) * | 2020-03-02 | 2021-11-09 | 南京机电职业技术学院 | Intelligent welding table and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196654A (en) * | 1997-03-14 | 1998-10-21 | 白光株式会社 | Heater-sensor complex |
| US6329641B1 (en) * | 1999-08-25 | 2001-12-11 | Hakko Corporation | Device and method for controlling a soldering iron |
| KR100865237B1 (en) * | 2007-06-28 | 2008-10-23 | 쿠쿠전자주식회사 | Induction heating apparatus |
| CN101867336A (en) * | 2010-06-09 | 2010-10-20 | 深圳市特尔佳科技股份有限公司 | Driving controller of electric eddy current brake and control method thereof |
-
2010
- 2010-10-27 CN CN201010521796A patent/CN102009243B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1196654A (en) * | 1997-03-14 | 1998-10-21 | 白光株式会社 | Heater-sensor complex |
| US6329641B1 (en) * | 1999-08-25 | 2001-12-11 | Hakko Corporation | Device and method for controlling a soldering iron |
| KR100865237B1 (en) * | 2007-06-28 | 2008-10-23 | 쿠쿠전자주식회사 | Induction heating apparatus |
| CN101867336A (en) * | 2010-06-09 | 2010-10-20 | 深圳市特尔佳科技股份有限公司 | Driving controller of electric eddy current brake and control method thereof |
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| Publication number | Publication date |
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| CN102009243A (en) | 2011-04-13 |
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