LEADING ALINGMENT BANDS
Aligning is to restrain the lateral movement. With that is possible the machine wasting reduction right when the machine starts, and a worthy decrease in the operations wasting. The great regulation accuracy and the constant adjustment insure an impeccable result, getting with that a favorable price.
Too used to insure a perfect alignment in the rollers handling within paper process, plastic, cloth material, cellophane, cardboard, etc. Too used in cutter machines, printers, packing machines, diaper manufacturers, etc. This system controls printed mark or sides by means of an ultrasonic yoke sensors and mark readers by color contrast.
The most important thing is the three kind in malfunction eradication :
- Static failure because of mislead roller regulators, off – center paper reels, etc.
- Dynamic failures because of ondulated borders, staggering rollers, moisture, oscillation of temperature, etc.
- Strain failures, iregular distribution of strain in transversal sense of the band.
The band leading system is an equipment builded with the closed "bucla technology" (turning motion process), the main characteristics are :
- Touching without contact of the bands border, of stripes or contrast borders.
- Touching signal simple transformation, and adjustment driving transmition, that insures a high regulation frequency and therefore one safer control of band high velocities.
- Operates only with one kind of power… The electricity.
SENSOR
- Thanks to semiconductors advanced technics the photoelectric sensor is a senseless element against weird light sources scanning with no contact of band rollers, contrast and color borders just as stripes.
- Reply frequency 10 KHz.
- In voltage from 10 to 30 VDC.
- Operates by means of scanner system.
- Protection against inverted polarity.
- Stripes reading capacity between 0,5 to 4mm.
- Amplifier with gain estabilizer due to voltage and temperature variations.
CONTROL EQUIPMENT
- Regulator is the central commands unit, on that the signals are processed and amplifyed, then transmited to the position device. The regulator contains all the handling elements and the necessary for the optimal regulation in order to facilitate the adjustment of the sensibility system; this holds an analogical motion band pointer. The regulation of the velocity in the position device is proportional on the error in the positionment.
- Totally monitored bridge for a faster motor reply.
- Automatic/manual operatonal mode available.
- Closed regulation "bucla" (turning motion process) to a better lineament and velocity reply with system PID.
- Protection of the actuator action blocked using limit sensors career.
ADJUSTMENT DRIVER
- It is about warner electric equipment usually, this has one direct motor with a power factor till 500 pounds. This one reaches a top speed till 4 inches per second.
- Protection against overload.
- Made of steel widespread piston.
- Inclemency proof – sheltered and sealed.
- Operating voltage, 24 VCD.
- Operating temperature since -15 f to 150 f.
- Completely maintenance free.
| LEADERS BANDS OUTLINE |
| Colin unrollers and coil rollers can go sideways, this is possible due to one direct current motor with one circulating balls spindle, meanwhile the band goes inspected with optoelectronic touching systems. |
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Alignment quadrants are useful when is necessary to make a lateral correction in a short round of regulation. Due to the imaginary point in the roller arrangement in the level of the material entrance it won’t result in asymmetric variations of the strain in the band. This one is the most frequently employed system because this principle is suitable at any class of material and too for it’s fitting properties in almost all dispositions alignment quadrant strong frame.
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| Sliding rollers are laid in the machines among production process, but on condition that the band can goes sideways without wrinkles in the material. So dispose of sufficiently long entrance band section is an essential issue. |
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