> The project synopsis little while ago, a printer
company entrusted us to develop one kind of new entire automatic
trademark printer complete set electrically controlled system.
Because the before type was the pure machinery, along with these
years automated product rich, the function enhancement, this company
also intended to use the automated new technology to increase the
product function, the promotion product scale. Chart 1 H210T
entire automatic trademark printer this section new high speed entire
is automatic does not do the rubber trademark printer the technical
specification: Project technical specification printing speed
200 trademarks/minute printing length scope 5 ~ 350mm the printing
precision ± 0.025mm function four colors chromatographies, trace the
color code printing synthesis above request, this type highest
request: In a minute prints 350mm long trademark 200 (namely in
0.3 second to want servo electrical machinery to locate 350mm), also
precision request in 5. This also requests the programmable
controller to be able to transmit very the high-frequency pulse
instruction, controls the servo electrical machinery rapid reaction,
is high speed moreover the high pintpointing. The union
technological requirement, and according to the market conditions, the
proper attention to both overall system cost control, finally used the
price quite high Japan Fuji electrical machinery company's UG20 series
to touch
The screen, SPB product and so on series programmable
controller, G11 frequency changer has composed the entire project
electricity control system. The product has composed the entire
project electricity control system. Mainly touches the screen
through the operation, by the PLC control frequency changer, the servo
electrical machinery achieves the high accuracy localization.
Below is overall system overall diagram Fuji programmable
controller PLC SPB Fuji frequency changer G11 entire numeral A.C.
servomechanism Fuji touches below screen PODUG20 is the overall system
mechanical layout: About the frequency conversion control swings
puts the paper to escape the board printing plate, but four colors
chromatographies drum color code detector set servo electrical
machinery 模切 board systems control introduction entire control
system roughly divides two parts
1. decides the long printing control so-called to decide
the length which the long printing control is refers each time prints
is fixed. The user in touches on the screen to input the
printing length, choice printing speed and establishment print
quantity. Then carries on after PLC the user establishment data
certain operation processing to control the servo electrical machinery
to carry on high speed decides the long localization. Because
running rate higher, but user design drum very heavy, the inertia is
very big; Because the request stops must be steady. Has
used in Fuji PLC some special instructions for this us, coordinates we
some special operational formulas, can achieve PLC the instruction
pulse the S addition and subtraction fast, and from the servo
examination curve looked also completely realized electrical machinery
S to decelerate, achieved smoothly stopped effect. Greatly
reduced the large diameter drum the position deviation which produces
to the servo electrical machinery impact.
In realizes this kind to stop in the effect programming
debugging, we felt Fuji PLS1 sends the pulse instruction to have the
full superiority in this aspect. First its addition and
subtraction fast time is short, only has 6ms; Next may when
sends the pulse unceasingly transform the pulse frequency, may achieve
the graduation to decelerate. Such stopped causes the
electricity function smoothly to decelerate, reduced the big inertia
drum to the machinery the impact, has achieved the goal which the high
metre movement and steadily stopped. In addition, although
Fuji's this section SPB the series small PLC price is lower, but has
transmits 2 groups to reach as high as the 100KHz pulse ability.
In other words, it may simultaneously control two exchanges
servos electrical machinery, the realization is high speed, the high
accuracy localization. This also is we uses Fuji PLC with the
customer unanimous approval a big factor. 2. so-called pursues
the color printing control to pursue the color printing control, is
refers preceding time has printed the trademark prints once more, on
chromatography other colors designs. In printing had to act
according to on the paper already to print the good some kind of color
the color code to locate, realization many kinds of colors precise
color printing. The user in touches on the screen to input the
printing length, the tracing color code length, the choice printing
speed and pursues the color speed. In the movement, the servo
electrical machinery first high speed moves section of distances, then
by the lower speed movement, simultaneously in pursues in the color
length scope to seek the color code, once found the color code to stop
immediately. We have still used Fuji PLC some unique
instructions, achieved high speed quickly enters, the low speed
pursues the color; Both has the rapidity, and has guaranteed the
accuracy. Pursues the color printing control command curve:
Instruction pulse frequency Hz traces the color code time (S) to
decelerate traces the color code to pursue in the color printing
control the electrical machinery actual rotational speed diagram of
curves: Because the localization pattern with decides the long
printing control to have the same place, all simultaneously used the S
addition and subtraction fast, in pursued in the color process to be
able very good to pursue the color braking, pursued the color
precision also to control in 10. Summary the effect which
actually uses from the user looked that, this systems control had
completely achieved the user proposed the request, the printing
effect, pursues the color effect to be ideal. In this us
especially has made the new old two kind of printers characteristic
the comparison: Old type: Pure mechanical trademark
printer new type: The entire automatic trademark printer entire
machine mechanism complex succinct mechanical cost height electric
appliance cost low medium reliability low high operation contact
surface does not have Chinese, English prints the function to
operator's quality request height entire machine attachment value low
Gao Dingchang has the method adjustment gear to touch the screen
establishment decides when long printing the length adjustment
situation to be complex, time-consuming simply to take the trouble,
time-saving to reduce effort to pursue the color printing function not
to have
What is worth mentioning, this company originally plans
uses the text monitor, but afterwards we recommended dispose Fuji to
touch the screen. After the use, they felt operates extremely
facilitates, the contact surface is rich, the Chinese and English
comparison, the operator does not need too many training then to
begin. Them to the Fuji product operation convenience, is been
stable and has reliably made the profound impression. The new
printer as soon as passes through is published, then sells in distant
markets Turkey, at present already entered the volume production
stage, has created the good economic efficiency for the customer. |
