product name:
Steel belt rectification monitoring device 1. Introduction Two serious problems in production lines using steel belts affect production and equipment life. One is that the steel belt is off track and needs to be adjusted frequently, otherwise it will damage the edge of the steel belt and the rubber strip, and need to be stopped for repairs, which seriously affects production. The second is that the tension of the steel belt is too large, which causes the steel belt to be seriously deformed in a short time, and the edge of the steel belt becomes a "wave" shape, and the service life is greatly shortened. The main reason for the excessive tension of the steel belt is that the operator of the equipment adjusts the tensioning mechanism too tight in order to limit the deviation of the steel belt. As a result, the deviation of the steel belt cannot be restricted, and the tensile deformation of the steel belt is severe.
The steel belt rectification monitor is a monitoring and control instrument specially designed and produced for the production line with steel belt. It is used to monitor the offset position of the steel belt in real time, and automatically perform the steel belt correction control, so that the steel belt always works in a normal state; monitor the tension of the steel belt in real time, guide the adjustment of the steel belt tension, and prevent the steel belt tension from being too large or too small , Significantly increase the service life of the steel belt.
2. System composition The system consists of 8 parts:
1. The host of the steel belt rectification monitor.
The host is the management and control center of the system, mainly composed of computer chip, embedded software, 2 strain analog channels, 6 photoelectric coupling channels, 4 function inputs, 3 control outputs, key scanning, dot matrix LCD Chinese characters display functions. The host is installed in the main control box.
2. Main control box.
In addition to the host computer, the main control box also has a motor forward output relay and contactor, a motor reverse output relay and contactor, an alarm drive and an audible and visual alarm device, a low-voltage power supply, and a manual control device.
3. Mechanical pushing mechanism.
The mechanical pushing mechanism is an actuator that automatically corrects the deviation of the steel belt. It consists of a 380V three-phase motor, a turbo deceleration mechanism, a push rod and a connector, and a stroke limit switch.
4. Force sensor.
The force sensor is a detector that monitors the tension (tension) of the steel belt, and the two sensors monitor the left and right tensions, respectively.
5. Photoelectric detector.
There are 2 groups of photoelectric detectors, each with 3 pairs, to monitor the deviation position of the steel belt.
6. Distribution box.
There are 380V three-phase power distribution and short-circuit and overload protection devices, signal converters for steel belt operation or shutdown in the distribution box.
7. Industrial computer and software (optional).
If you need to connect a steel belt deviation correction monitor to transmit and display information to the control room, you can choose an industrial computer and software and an RS485 / USB bus interface card. When there are multiple steel belt rectification monitors in the same workshop, an industrial computer and software can be used to complete the exchange and display of all information.
8. RS485 / USB bus interface card (optional).
3. Working Principle The steel belt rectification monitor is an intelligent monitoring and control system using analog electronic technology, microcomputer technology, and electrical control technology.
Assemble the mechanical pushing mechanism and the steel belt roller connecting rod together, and use the movement of the mechanical pushing mechanism to drive the steel belt roller to make radial movement, which is used to increase or decrease the tension of the steel belt and achieve the purpose of correcting the steel belt.
The system has 2 control methods: manual control and photoelectric control.
The system has 4 kinds of alarm functions, steel belt left alarm, steel belt right alarm, too high tension alarm and too low tension alarm. When the system alarms, you can press the key to mute the sound. Silence is cancelled only after the alarm is released. Only re-alarm when there is a new alarm.
The system has a fault self-detection function that can detect sensor faults and optocoupler faults. When the sensor fails, the failure message is displayed and the system stops control. When there is only one pair of optocoupler faults, the fault information is displayed and normal control is possible. When more than two pairs of optocouplers fail, the failure message is displayed and the system stops control.
The system can detect the steel belt stop signal. When the steel belt stops, the system stops the photoelectric control.
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