CN102107316A - Sequential control scheme for vertically lifting arc strike - Google Patents
Sequential control scheme for vertically lifting arc strike Download PDFInfo
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- CN102107316A CN102107316A CN2009102004773A CN200910200477A CN102107316A CN 102107316 A CN102107316 A CN 102107316A CN 2009102004773 A CN2009102004773 A CN 2009102004773A CN 200910200477 A CN200910200477 A CN 200910200477A CN 102107316 A CN102107316 A CN 102107316A
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- 238000003466 welding Methods 0.000 claims abstract description 54
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- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 3
- 235000018734 Sambucus australis Nutrition 0.000 claims description 11
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- OGFXBIXJCWAUCH-UHFFFAOYSA-N meso-secoisolariciresinol Natural products C1=2C=C(O)C(OC)=CC=2CC(CO)C(CO)C1C1=CC=C(O)C(OC)=C1 OGFXBIXJCWAUCH-UHFFFAOYSA-N 0.000 claims description 11
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Abstract
The invention discloses a sequential control scheme for a vertically lifting arc strike, which is mainly finished through an 8-bit singlechip (C51). The sequential control scheme for lifting arc strike is programmed in the singlechip (C51), and the sequential control, particularly given sequential control on current, is realized through a central processing unit (CPU) sequential control circuit in the welding process, so that a welding machine is in a periodic working state after electrification, a voltage filter and amplification signal is detected by utilizing a working period so as to judge whether a welding gun contacts a workpiece; moreover, a current given reference signal (Iref) is still kept minimum after the welding gun contacts the workpiece, so that a pulse width modulation signal at the moment the welding gun contacts the workpiece is rapidly reduced to minimum, and after keeping 20MS, the current given reference signal (Iref) slowly rises, so that short-circuit current is 20A. After the short-circuit current is 20A, the voltage signal is continuously detected so as to judge whether the welding gun leaves the wokepiece, and after that the welding gun leaves the wokepiece is detected, the current given reference signal (Iref) is switched to the preset current, and normal welding is performed.
Description
Technical field
The present invention relates to a kind of SECO technology, especially a kind of SECO technology that is applied to the vertical-lift striking in the manual electric welding machine.
Background technology
At present, general manual electric welding machine is started working when connecting power supply, and the given reference signal of electric current (Iref) is set at short circuit current, the weak point of She Dinging is like this: when welding gun contact workpiece moment, pulse-width signal does not have timely constriction, cause that the peak current duration is long, welding gun clings workpiece easily.Especially when the welding of little electric current, easy current interruption when clinging workpiece and firmly pull away because of welding gun.
Summary of the invention
Purpose of the present invention aims to provide a kind of SECO scheme that promotes striking, allow electric welding machine cannot not have stickingly workpiece at the state of working on power, and the arc maintenance performance when the lifting welding gun pulls away workpiece is to overcome the defective that present manual electric welding machine clings workpiece and easy current interruption easily.
The technical solution adopted in the present invention is mainly finished by 8 single-chip microcomputers (C51).In single-chip microcomputer (C51), enroll the SECO scheme that promotes striking, realize the control of cycle time of welding process by the CPU sequential control circuit, especially to the given time sequence control of electric current, make welding machine after powering on, be the periodic duty state, utilize working hour detecting voltage filtering amplified signal, judge with this whether welding gun touches workpiece, and still keep minimum touching the given reference signal of workpiece after-current (Iref), make welding gun touch workpiece moment pulse-width signal and reduce to minimum rapidly, and the slow more given reference signal of ascending current (Iref) makes short circuit current reach 20A behind the maintenance 20MS.After short circuit current reaches 20A, continue the detecting voltage signal, judge with this whether welding gun leaves workpiece, to leave the given reference signal of workpiece after-current (Iref) and switch to predetermined current detecting welding gun, welding is normally welded.
The invention has the beneficial effects as follows by increasing the signals collecting parameter of CPU sequential control circuit, under the situation that does not influence welding performance, it is 100MS that periodicity welding machine working control signal enables (PWM-ON) time set, welding machine working control signal forbidden energy (PWM-OFF) time set is 200MS, at welding gun and the given reference signal of workpiece short circuit after-current (Iref) maintenance minimum time is 20MS, and short circuit current is set at 20A.Utilize working hour detecting voltage signal with this, change when the welding gun contact workpiece moment pulse-width signal and in time do not contracted and cause the disadvantage of peak current overlong time, improve the resistance to bond of lifting striking at transcient short circuit time.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the SECO scheme circuit block diagram of a kind of vertical-lift striking of the present invention
Fig. 2 is the workflow diagram and the given sequential chart of electric current of the SECO scheme of a kind of vertical-lift striking of the present invention
The specific embodiment
Fig. 1 is a circuit block diagram of the present invention.As shown in Figure 1, the present invention includes power output circuit, forward voltage current signal filter amplification circuit, CPU sequential control circuit and pulse-width modulation circuit.Forward voltage current signal filter circuit carries out voltage signal and current signal collection respectively to voltage, the electric current of power output circuit output, and the voltage filter amplified signal after will gathering and current filtering amplified signal feed back to the CPU sequential control circuit, carry out the given time sequence control of electric current via the CPU sequential control circuit, analyze and provide welding machine working control signal and the given reference signal of electric current, and regulate by pulse-width modulation circuit, the output pulse width modulation signal also feeds back to power output circuit, realizes the given time sequence control of electric current with this.
Fig. 2 is workflow diagram of the present invention and the given sequential chart of electric current.As shown in Figure 2, duty after the present invention's welding machine powers on is set to the periodic duty state, it is 100MS that periodicity welding machine working control signal enables (PWM-ON) time set, welding machine working control signal forbidden energy (PWM-OFF) time set is 200MS, it is 20MS that welding gun and the given reference signal of workpiece short circuit after-current (Iref) keep minimum time, and short circuit current is set at 20A.In the working time section, the CPU sequential control circuit judges by detecting voltage filtering amplified signal whether welding gun touches workpiece, if do not touch workpiece, shows welding no-load running; If touch workpiece, then making welding machine is 20MS touching the given reference signal of workpiece after-current (Iref) maintenance minimum time, in 20MS, pulse-width signal is reduced to minimum rapidly, and the beginning linearity increases the given reference signal of electric current (Iref) after keeping 20MS, makes short circuit current reach 20A.The CPU sequential control circuit continues detecting voltage filtering amplified signal, judges by signal whether welding gun leaves workpiece, if short circuit current does not reach 20A, continues the linear given reference signal of electric current (Iref) that increases; If short circuit current reaches 20A, wait for that then welding gun leaves workpiece.When welding gun left workpiece, whether the CPU sequential control circuit continue surveyed predetermined current greater than 20A, if less than 20A, the given reference signal of electric current (Iref) can slowly drop to predetermined current preventing current interruption, and the normal welding of beginning; If greater than 20A, the given reference signal of electric current (Iref) directly rises to predetermined current and begins normal welding.
Claims (3)
1. the SECO scheme of a vertical-lift striking comprises power main circuit, forward voltage current signal filter amplification circuit, CPU sequential control circuit and pulse-width modulation circuit.It is characterized in that: forward voltage current signal filter circuit is gathered respectively voltage, the current signal of the output of power main circuit, and the voltage filter amplified signal after will gathering and current filtering amplified signal feed back to the CPU sequential control circuit, after judging, upgrades the CPU sequential control circuit given reference signal of electric current and welding machine working control signal, thereby realize pulsewidth modulation and output pulse width modulation signal driving power main circuit, realize SECO output current with this.
2. according to the described CPU sequential control circuit of claim 1, it is characterized in that utilizing the working time section to come detecting voltage filtering amplified signal, and judge according to the signals collecting parameter of program setting whether welding gun touches workpiece and whether welding gun leaves workpiece, by given SECO realizes the SECO of welding current to electric current.The signal sets parameter is: not during contact workpiece, the given reference signal of electric current (Iref) is minimum at welding gun, and when welding gun is 20MS with Iref maintenance minimum time after workpiece contact, then linearity increases to 20A, switches to welding current when welding gun leaves workpiece.
3. welding machine working control signal according to claim 1 and 2 and signals collecting parameter are set, duty after the present invention's welding machine powers on is set to the periodic duty state, it is 100MS that periodicity welding machine working control signal enables (PWM-ON) time set, and welding machine working control signal forbidden energy (PWM-OFF) time set is 200MS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200477.3A CN102107316B (en) | 2009-12-23 | 2009-12-23 | Sequential control scheme for vertically lifting arc strike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200477.3A CN102107316B (en) | 2009-12-23 | 2009-12-23 | Sequential control scheme for vertically lifting arc strike |
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| Publication Number | Publication Date |
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| CN102107316A true CN102107316A (en) | 2011-06-29 |
| CN102107316B CN102107316B (en) | 2015-06-10 |
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| CN200910200477.3A Expired - Fee Related CN102107316B (en) | 2009-12-23 | 2009-12-23 | Sequential control scheme for vertically lifting arc strike |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100785A (en) * | 2013-02-28 | 2013-05-15 | 广州市长胜焊接设备实业有限公司 | Digitization inversion arc welding machine output pole short circuit automatic protection system |
| CN104209627A (en) * | 2014-09-23 | 2014-12-17 | 上海通用重工集团有限公司 | Arc starting control mode of reinforcing steel bar electroslag pressure welder |
| CN104227229A (en) * | 2014-09-23 | 2014-12-24 | 上海通用重工集团有限公司 | Electrowelding method of touch spark-free steel electroslag pressure welding |
| CN105171195A (en) * | 2015-10-15 | 2015-12-23 | 上海通用重工集团有限公司 | Energy-saving control device for manual welding machine |
| CN107866622A (en) * | 2017-12-27 | 2018-04-03 | 张胜男 | A kind of new TIG welds built-in lifting arc strike control device |
| CN110340488A (en) * | 2019-06-01 | 2019-10-18 | 上海沪工焊接集团股份有限公司 | A kind of promotion arc start control method of inverter type welder |
| CN111545883A (en) * | 2020-05-14 | 2020-08-18 | 上海气焊机厂有限公司 | Cutting machine control method and control device |
| CN114273752A (en) * | 2021-12-10 | 2022-04-05 | 深圳市佳士科技股份有限公司 | Thermal arc striking control method of welding machine, welding machine driving circuit and welding machine |
| CN114871534A (en) * | 2022-06-17 | 2022-08-09 | 深圳市佳士科技股份有限公司 | Argon arc welding arc starting lifting control method and device, argon arc welding machine and storage medium |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5005332B2 (en) * | 2006-12-20 | 2012-08-22 | 株式会社ダイヘン | Arc start control method for consumable electrode arc welding |
-
2009
- 2009-12-23 CN CN200910200477.3A patent/CN102107316B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100785A (en) * | 2013-02-28 | 2013-05-15 | 广州市长胜焊接设备实业有限公司 | Digitization inversion arc welding machine output pole short circuit automatic protection system |
| CN103100785B (en) * | 2013-02-28 | 2015-11-25 | 广州长胜机电有限公司 | A kind of digitlization inverter arc welding machine output stage short circuit automatic protective system |
| CN104209627A (en) * | 2014-09-23 | 2014-12-17 | 上海通用重工集团有限公司 | Arc starting control mode of reinforcing steel bar electroslag pressure welder |
| CN104227229A (en) * | 2014-09-23 | 2014-12-24 | 上海通用重工集团有限公司 | Electrowelding method of touch spark-free steel electroslag pressure welding |
| CN105171195A (en) * | 2015-10-15 | 2015-12-23 | 上海通用重工集团有限公司 | Energy-saving control device for manual welding machine |
| CN107866622A (en) * | 2017-12-27 | 2018-04-03 | 张胜男 | A kind of new TIG welds built-in lifting arc strike control device |
| CN110340488A (en) * | 2019-06-01 | 2019-10-18 | 上海沪工焊接集团股份有限公司 | A kind of promotion arc start control method of inverter type welder |
| CN111545883A (en) * | 2020-05-14 | 2020-08-18 | 上海气焊机厂有限公司 | Cutting machine control method and control device |
| CN114273752A (en) * | 2021-12-10 | 2022-04-05 | 深圳市佳士科技股份有限公司 | Thermal arc striking control method of welding machine, welding machine driving circuit and welding machine |
| CN114273752B (en) * | 2021-12-10 | 2023-06-02 | 深圳市佳士科技股份有限公司 | Thermal arc striking control method suitable for inversion manual welding machine and welding machine |
| CN114871534A (en) * | 2022-06-17 | 2022-08-09 | 深圳市佳士科技股份有限公司 | Argon arc welding arc starting lifting control method and device, argon arc welding machine and storage medium |
| CN114871534B (en) * | 2022-06-17 | 2023-06-02 | 深圳市佳士科技股份有限公司 | Argon arc welding lifting arc striking control method and device, argon arc welding machine and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102107316B (en) | 2015-06-10 |
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Address after: 201700 No. 7177 Pine Road, Qingpu District, Shanghai Applicant after: SHANGHAI HUGONG ELECTRIC GROUP Co.,Ltd. Address before: 201700 No. 7177 Pine Road, Qingpu District, Shanghai Applicant before: Shanghai Hugong Welding Machine (Group) Co.,Ltd. |
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