1 introduction
Automatically will cut a main use is uses for to
decide long adhesive tape, plastic membrane, paper volume material and
so on cuts the transparent tape, does not do, will put in order the
volume extra wide material to sliver the small volume through the
hypothesis width minute. For example the commonly used clear
plastic, is cuts through this equipment becomes. Cuts the width
may carry on the hypothesis on the man-machine contact surface.
May establish the many kinds of working pattern on the
man-machine contact surface, each kind of pattern includes:
Hypothesis width, cutting-off tool several two parameters.
For example if customer choice pattern 1, after then moves the
system automatically to carry on according to the pattern 1 hypothesis
width cuts, cuts the knife amounts to after the hypothesis knife
number, auto-stop. If choice pattern 10, after then starts,
after system the knife number which establishes pattern 10 cuts
finished, auto-stop. Double servo and the single servo
difference lies in, the single servo-control cuts a migration is
through the servo impetus, 进刀 and draws back the knife dependence
flowing tubing head pressure systems control. The double servo
not only cuts the motion use servo moreover 进刀 and draws back the
knife also to use the servo. 进刀 the length can carry on the
hypothesis on the man-machine, increased the precision which cuts.
Automatically cuts to divide into 单管and the double barrel
two kinds. These two kind of equipment Shanghai mechanical and
electrical all already had the successful case, moreover already in
the customer place stable use, the necessary mechanical merchant also
already the product which reached in normal use. Because this
profession competition is intense day after day, in order to can
further enhance the equipment the scale and to satisfy the higher
precision request, we provided the double servo for the customer
automatically to cut the control plan, through two day-long
developments and the debugging, developed successfully the equipment.
Nearly step consolidated customer use to reach the product the
confidence. Simultaneously reached servo the performance also to
obtain the customer approval.
2 electrically controlled system designs
2.1 systems compositions
The system composition sees also the system diagram
(chart 1).
2.2 reaches the technical platform based on
the electrically controlled system hardware disposition
3 pair of servos automatically cut the
control system design
3.1 crafts main bodies analysis
The double servo automatically cuts to actuate by two
frequency changers. An actuation main axle motor; Moreover
actuates the round knife (cutter). Two servos coaxial are
connected with the lead screw, a control cuts a localization, namely
decides long. Moreover a control 进刀 and draws back the
knife. The frequency changer through the RS485 communication way
control, assigns the main axle and the round knife rotational speed.
?takes the Pt pattern localization. Has provided the
single stage according to the customer request for it and continuously
two control modes and 10 kind of operations patterns. If has the
special need, may operate the pattern to expand to several dozens kind
of patterns. Each kind of operation pattern includes: The
width hypothesis, the knife number establish two parameters.
3.2 crafts control design
The customer basis produces the request, will need to
produce the adhesive tape width and this width will need to cut the
knife number will establish in advance in the parameter list, these
two parameters will be connected in PLC to fall the electricity
maintenance register. If the operator chooses the single stage
control mode, inputs the pattern number after the man-machine, the
system automatically (width and knife number) transfers to should the
pattern parameter. After the start, cuts to start through the
servo to decide the long derailing, after arrives the hypothesis the
width, cuts a derailing to stop, cuts a longitudinal shift through
other servo-control. When cuts a migration to the front spacing,
fixed time starts, to guarantee completely shuts off the adhesive
tape, fixed time the time one, automatically returns to the after
limit switch place stops. If this pattern hypothesis knife
number is not zero above, then duplicates act, after cuts the number
of times was equal to this pattern hypothesis the knife number,
automatically stops. If this pattern hypothesis knife number for
zero then the system act. But if the operator chooses the
stepless control way, inputs the pattern number on the man-machine,
after then starts the system automatically cuts according to the
pattern 1 hypothesis width and the knife number, after the pattern 1
cuts finished, automatically cuts according to the next pattern
hypothesis width and the knife number, if this pattern hypothesis
knife number will be zero, then the system automatically has jumped
this pattern, the execution next pattern, after the pattern which
establishes completely cuts the auto-stop. For example:
Under continual pattern: The choice pattern 10, after the
start the system cuts according to the pattern 1 hypothesis parameter,
the pattern 1 cuts finished, if the pattern in 2 establishes the knife
number is not zero, then defers to the pattern 2 hypotheses the widths
and knife number automatic gas cutting; If the pattern in 2
establishes the knife number is zero, then the system automatically
has jumped the pattern 2, in 3 establishes the parameter according to
the pattern to cut. To this analogizes, after cuts the pattern
10 hypotheses widths and the knife number finished, system auto-stop.
Cuts a derailing the speed to be allowed to carry on the
hypothesis on the man-machine, the derailing speed divides into two
sections fast: Motion initial speed, normal operation speed.
Two sections of speeds cuts through fixed time complete.
Two sections of fast cuts time carry on the hypothesis on the
man-machine. The system must carry on before the regular
production to the knife, guaranteed the round knife can the material
which needs to cut shut off, simultaneously requests fast 进刀/to
draw back the knife, when round knife soon with material contact, the
round knife completely fast cuts. Cuts finished, fast draws back
the knife. Under this request, I have designed the unusual human
nature operation for the customer. Before the start, establishes
the good 进刀 speed on the man-machine, cuts the speed, then
手动进刀. 手动进刀 starts when 进刀 the speed is
quicker, delivers 手动进刀, the round knife fast returns.
This time, system automatic memory 手动进刀 movement time,
and demonstrated this period of time on the man-machine. When
the system is at the normal operation condition, each time cuts, the
round knife all establishes 进刀 the speed fast approaches the
material which cuts, moves to the knife in front of the automatic
memory time, cuts the speed which the time as soon as arrives
establishes to carry on the idling speed to cut. Operates the
succinct convenience, even more human nature.
3.3 crafts controls flow
The systems control flow order as follows states:
First the cartridge movement, in front of the cartridge
movement, the rocking shaft air cylinder first must upwardly act, on
after the spacing, the cartridge and the thimble movement, will
advocate 轴顶 is tight and grips. Then the main axle and the
round knife can start carries on cuts. In automatic movement
process if according to completely stops, then the main axle and the
round knife stop revolving, then the thimble returns, the cartridge
delivers start, after the thimble draws back arrives, the rocking
shaft air cylinder to under, gets down after the spacing stops.
Finished after the continuous running, the system automatically
stops, and automatically returns the thimble, the cartridge pine
opens. The rocking shaft air cylinder arrives to under.
Then after retrades the volume, if starts the cartridge, then
cuts the automatic reset zero point, and the rocking shaft upwardly
arrives, the thimble goes against arrives, the cartridge clamps the
main axle, after is advantageous for the entire volume adhesive tape
to cut finished, carries on when trades the volume, facilitates uses
personnel's operation.
3.4 automatic memories functions
In entire automatically cuts the volume in the process,
if appears any breakdown or the operator manual stops, then the system
recording current carries out the pattern number and already completed
several time has cut, after if breakdown processing finished starts
once more, then deferred to stops the front pattern to continue to
cut. What above states is the automatic gas cutting condition.
3.5 automatically to knife function
Under the manual condition, has provided for the
customer automatically to the knife function. Namely when
appears the breakdown or preceding time cuts the quality is not high,
under the engine off condition, may through the man-machine 'or'
operation kneading board on, according to indirectly turn over to the
position or the indirect advance button, cuts automatically by the
current pattern hypothesis width to after or a forward motion width,
achieves automatically to the knife function. Simultaneously
also provides manually to the knife function.
3.6 essential technical designs
1 pattern parameter hypothesis and
transfer
In use PLC continual falls the electricity maintenance
area the data memory all patterns parameter (width hypothesis, knife
number hypothesis), also the address which corresponds in PLC all is
the double character. If the pattern 1 center width hypothesis
corresponds in PLC D500, then the knife number hypothesis corresponds
in PLC D502, then the pattern 2 center two parameters correspond in
PLC the address is D504, D506. Therefore may come the addressing
using the indexed address. The pattern number input corresponds
D570, then then realizes the parameter function of transfer through
the below procedure.
SUB D570 K1 D90
MUL D90 K4 D92
MOV D92 F2
ADD D92 K2 D160
MOV D160 F1
DMOV D500F2 D192 // hypothesis width
MOV D500F1 D190 // hypothesis knife number
2 yardage calculations
The lead screw 导程 10mm, the electronic gear compared
to is 2, servo every 10,000 pulses/circle, servo and lead screw
plumbing. The width establishes 2 decimals. Therefore may
promote the hypothesis the width with to have to transmit between the
pulse the relations as follows:
Needs pulse =10000* the hypothesis width /100* electron gear to
compare * 导程 = hypothesis width *5
3 patterns transformations
Presently the cutting-off tool number take has drawn
back the knife to arrive as the datum, each time adds one. When
already the cutting-off tool number and the hypothesis knife number is
equal, pattern automatic Canada one. Thus will move
the parameter automatic extension to change into the next pattern
hypothesis the parameter.
4 communications
The main axle speed and the round knife speed through
the RS-485 communication, assigns the frequency changer by PLC.
4 systems debuggings
4.1 systems debuggings
1 completes the entire control through the debugging
the logical gate. Guaranteed the basic logical movement is
unmistakable.
2 program debugging successfully the main axle and round knife
frequency component communication.
3 uses the manual pattern, causes the servo by the JOG way
movement.
4 servo parameters hypothesis: 1-00: 2; 1-01:
0; 1-44: 2; 2-08: 12; 2-10:
1; 2-15: 0; 2-16: 0; 2-17:
0; Adjusts according to the servo concrete movement effect
2-00; 2-02; 2-04; 2-25; 2-26;
Simultaneously the corresponding adjustment 1-08 parameter,
guaranteed the servo when tells the movement gentle somewhat,
establish this parameter according to the special details.
5 judges servo the revolution direction, is consistent with the
request.
6 actuates the servo on the earth to meet according to the
request, simultaneously meets the frequency changer on the grounding
and the reliable earth connection. Otherwise has the possibility
because the frequency changer moves the disturbance causes the servo
misoperation. If the scene unreliable earth, corresponding
reduces the frequency changer the carrier frequency. If in the
electricity cabinet has the 24V power source, may consider meets the
frequency changer the grounding and switching power supply 24V- is
connected, reduces the disturbance.
4.2 entire machine pictures
5 concluding remark
Center reaches the electricity to pass mainly is
China most has the growth potential the automated market equipment and
the service supplier. Reaches the frequency changer, the
encoder, the man-machine contact surface, PLC, the servo, warm
controlling and so on the mechanical and electrical product and the
technical service covers the main automation area of technology.
Center reaches the parent company which the electricity passes
for world famous electron manufacture transnational enterprise - to
reach the electronic group. Reaches the group to have the scale
huge production base in Jiangsu Wu Jiangjian, provides the mechanical
and electrical product the comprehensive manufacture. Center
reaches the service system which the electricity passes to proliferate
the nation. Reaches or the global first big power source
management system management system to supply goods business.
Controls in the profession as the labor the well-known merchant,
through applies own product to be able to provide the comprehensive
solution for all the various trades' and occupations' customer. The best product price, the is thorougher than
consummation nation and even the global 联保 service can guarantee
the customer benefit. |
