The stannum that is based on a stage to amount to mechanical and electrical products creams printing machine

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Summary: The introduction is based on a stage to amount to PLC system the system of automation of SMT printing machine of compositive framework. Cream to stannum technological process of printing machine model gives an automation systems analysis. PLC automation system designs essentials discussion to have general and referenced value. Keyword: SMT pressworks limited company of industry of some nicety of Shanghai of PLC 1 foreword is manufacturer of electronic production facilities. This company has higher integrated development capability and perfect quality guarantee system, ceng Huo gets award of achievement of multistage scientific research and invention patent. Product of heart beautiful nicety is popular area of countrywide each district and southeast Asia, middle east, get client reputably. Main product has: SMT (the surface installs printed circuit board) send printing machine, automatically receive the facility of electronic trade main body such as trigger trigger, automatically. The face that article key introduces installs printed circuit board stannum creams printing machine is among them core equipment. System of automation of 2 SMT printing machine is in SMT craft production process, stannum creams presswork the one annulus that craft is special key, its character will be affected directly then hind paragraph the character of working procedure, want to assure the character of whole SMT craft, must assure to presswork above all craft character. Statistic makes clear, PCB (printed circuit board) the 60% reasons that cannot pass a test and need do poorly done work over again presswork to quality is differred and be caused. The one link with cream because of this stannum printing machine is on electronic production line important. 2.

Design of 1 automation system is electronic-controlled the system is based on a stage to amount to PLC automation system compositive. Interface of feeling screen man-machine comes true below PLC drive full automatic control, have the characteristic that operates simple, study to go to the lavatory. PCB drive and conveyer compose use the entrance electric machinery of accurate stability, set of a variety of operation pattern choice are simple. The framework of system of SMT printing machine that is based on a stage to amount to PLC automation platform is shown 1 times like the graph. DVP-14SS11R is the stage is amounted to thin model the unit with artful Zuo PLC, offer most the Zuo order that Dai uses Yijuji controls Ha function. DOP-A57BSTD is the stage is amounted to 5.

8 ash of 7 rank interface of feeling screen man-machine. VFD004M21A is the stage amounts to transducer of M series low noise, volume small price is low, apply to general requirement to apply an environment. Framework of system of automation of printing machine of graph 1 SMT 2.

2 automation presswork function (1) equipment operation interface is offerred by feeling screen. Cent uses an option for full automatic, semi-automatic, hand 3 kinds of operation pattern, and here each have LCD, SMT below 3 kinds of mode child mode choice. There still is choice of one-way, two-way mode below SMT mode, have below LCD mode stop left, stop right pattern alternative, and respective movement is different, the user can need agile alternative according to his, if the graph is shown 2 times,feeling screen model handles indication picture case. (A) (B) graph Nextpage of picture of 2 typical craft (2) if electrify asks to whether in judging basket support, leave below SMT mode board whether be in upper limit and drawknife or so limit, if starting the position, by start a meeting to appear call the police, remind an user to need a hand to use the position that tone needs to the place that start. And need not judge drawknife to whether be restricted in the left and right sides below LCD mode, if not be restricted in the left and right sides, need to be pressed on man-machine only start or stop left, when stopping right choice, meet choose automatically according to yours, drawknife stops in the limit that you choose, if pursue,3 are shown. Graph 3 electrify diagnose a picture (3) equipment starts automatic judgement drawknife to there still is the limit in left limit, if start left limit program in left limit, if start the movement of right limit in right limit. 2.

Technological process of 3 typical automation (1) SMT mode lays one-way pattern (initiative stop in left limit) : From board drop, drop floor level, time, next left drawknife, time, drawknife right travel, drawknife right limit, time, receive left drawknife, time, from board rise to upper limit. (2) SMT mode lays two-way pattern (initiative stop in left limit) : From board drop, drop floor level, time, next left drawknife, time, drawknife right travel, drawknife right limit, time, receive left drawknife, time, next right drawknife, time, drawknife is left row, drawknife is left the limit, time, receive right drawknife, time. (3) different pattern stops below LCD mode (initiative stop in left limit) : From board drop, drop to issue left drawknife right travel at the same time to floor level, to from board floor level and drawknife are right be restricted, time, drawknife left travel, drawknife is left be restricted, time, receive left drawknife, time, from board rise to upper limit. In normal manufacturing procedure, when moving automatically to use moving switch with the hand, the system stops entirely first machine next again switch arrives corresponding working status, the security that handles in order to ensure. Want to undertake manufacturing computation in equipment start course, crop arrives to stop automatically later machine, remind an user to change bat. 2.

4PLCI/O interface designs PLCI/O interface design to express place to show as follows. PLC input outputs configuration to express Normal Align=center>INPUTnormal Align=center>normal Align=center>OUTPUTnormal Align=center>normal Align=center>X0normal Align=center> starts stop Normal Align=center>Y0normal MARGIN-LEFT of Center" Align=center> left drawknife: 7.

3pt; TEXT-ALIGN: Center" Align=center>X1normal Align=center> is left be restricted Normal Align=center>Y1normal MARGIN-LEFT of Center" Align=center> right drawknife: 7.

3pt; TEXT-ALIGN: Center" Align=center>X2normal Align=center> is right be restricted Normal Align=center>Y2normal MARGIN-LEFT of left travel of Center" Align=center> drawknife: 7.

3pt; TEXT-ALIGN: Center" Align=center>X3normal MARGIN-LEFT of Center" Align=center> upper limit: 7.

3pt; TEXT-ALIGN: Center" Align=center>Y3normal MARGIN-LEFT of right travel of Center" Align=center> drawknife: 7.

3pt; TEXT-ALIGN: Center" Align=center>X4normal MARGIN-LEFT of Center" Align=center> floor level: 7.

3pt; TEXT-ALIGN: Center" Align=center>Y4normal Align=center> leaves board Normal Align=center>X5normal MARGIN-LEFT of floor level of Center" Align=center> bedplate: 7.

3pt; TEXT-ALIGN: Center" Align=center>Y5normal Align=center> sucks vacuum 3 designs are schematic 3.

Guidance of 1 process designing wants to want technology to understand lucidly above all when writing a program, want to understand all sorts of circumstances to fall, should go flow movement (the mode LCD that needs according to you, SMT one-way, two-way, stop left, stop right, full automatic, semi-automatic, hand to move all sorts of actions, can meet when writing a program otherwise desultorily, cause misoperation to emerge in endlessly. Remember all sorts of alarm are variable, want an alarm variable know sth thoroughly at the heart, when debugging good judgement breakdown. 3.

2PLC outputs contact to protect general and normal circumstance to fall, get an electric shock to protect the output of PLC, perceptual to dc load if: 24V electromagnetism a powerful person, in electromagnetism a powerful person the two end of coil should add diode of retrorse follow on current.

The change of instantaneous electric current that breaks phone because of online circle electrify is bigger, the inductive electromotive force that arises from this passes follow on current of diode of retrorse follow on current to perhaps transfer with auxiliary relay in the faradic need that closes arise in loop, move for long otherwise, the likelihood answers the output PLC to nod burn down.

3.

3 taking ground connection seriously to design PLC ground connection to nod is to electric ark includes to be below the circumstance of reliable ground connection in whole equipment, reduce all sorts of effects that disturb pair of PLC.

But carry in actual client, what reliable ground connection causes an user rarely is enough take seriously, bring about whole equipment ground connection to exist in name only.

Below this kind of circumstance, if carry the ground of PLC and equipment ground connection join, can mix equipment sometimes instead the electric interference in electric ark introduces PLC, make PLC job abnormal, can bring about PLC to make mistake even namely ERROR lamp twinkles, PLC cannot move.

Solve method: ? ㄒ a pavilion or house on a terrace dash forward if the spot is accomplished not easily,beat of fan of ligature of Ы  uncut jade embraces? , can carry the ground connection of PLC take out or carry the ground connection of PLC the join of 24V negative pole with switch power source.

4 last words because process of new product development is medium,this accurate company product goes electronic-controlled problem of support of the technology before systematic OEM makes work and after service, affect company reputation. This case uses a stage to amounted to product of complete set of Electromechanical automation platform to develop printing machine successfully for its, send trigger, receive trigger. Stannum creams printing machine. Use a stage to amount to mechanical and electrical products to cream in stannum the successful application on printing machine, came true full automatic control, relatively the work efficiency that the earth improved printing machine, went to the lavatory user operation. CNC Milling