How to clean and adjust the sensor of CTP system
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The sensor is a device that receives signals or stimulates and generates a reaction. It can transform the detected information into electrical signals or other forms of information according to a certain rule, and can output, process, store, display, record and control information. Claim. In a highly automated CTP system, various types of sensors play an important role.
The sensors in the CTP system can be roughly divided into three types: photoelectric sensors, temperature and humidity sensors, and magnetic sensors. These sensors can effectively protect and accurately control the operation of the device, ensuring that every plate can be output. Up to standard. Therefore, we must do a good job of cleaning and adjusting the sensor during the daily maintenance of the CTP system.
Photoelectric sensor
1.Upper system rubber roller position sensor
It is used to sense whether the rubber roller is in the position away from the drum or in the position close to the drum to prevent the plate from being incorrectly placed or the position of the plate is out of the specified range because it is not attached to the drum.
2. Head clamp position sensor
It is used to sense whether the head clamp is in the position away from the drum or in the position close to the drum to ensure that the CTP system will not malfunction when the Clamp system is running close to the high-speed rotating drum, thus ensuring safe operation of the system.
3. Tail clip position sensor
There are a total of 6 for sensing whether the tail clip is on the drum or on the bracket to ensure that the edge of each plate in the CTP system is correctly positioned and on the same line.
4. Screw position sensor
A blocking sensor for detecting whether the lead screw base is in the initial position or in the offside position to prevent mechanical failure or circuit failure due to the laser head portion being exceeded. The figure shows two different screw position sensors, but they function the same in a CTP system.
5. Flying version sensor
It is used to detect the abnormal pop-up of the plate. When the plate is abnormally popped up, the fly-sell sensor will send a command to disable the CTP system action, and there are related prompts, such as the drum stop, the next step cannot be performed.
Temperature and humidity sensor
1. Laser head temperature and humidity sensor
The temperature and humidity inside the laser head can be detected by the sensor and displayed in software. If the temperature and humidity are outside the standard range, the equipment will warn and stop working to protect the working environment of the laser head and ensure its service life.
2. Coolant temperature sensor
The coolant circulates around the laser head. The temperature sensor of the coolant can detect the temperature of the coolant at any time. If the temperature changes, the sensor will give a prompt and work through the internal circuit to adjust the temperature back to normal.
3. Screw temperature sensor
It is used to detect the temperature generated by the rotation of the screw when the equipment is running, to prevent the phenomenon of heat rise and contraction. The sensor can transmit the screw temperature value to the CPU board of the CTP system, and adjust the parameters within the laser head exposure range at any time. In the event of a failure, the CTP system will stop working.
Magnetic sensor
1. Cover sensor
Early CTP systems commonly used magnetic sensors to detect whether the cover was in a normal position. Today's CTP systems use switch locks to achieve related functions.
2. Exit door sensor
When retiring, check whether the exit door is in the correct position to ensure the normal operation of the exit door.
Sensor operation command
In some general-purpose CTP systems, if some sensors fail, we can use internal commands to shield or open the sensor. Some of the operation commands are shown in Table 1. It is worth noting that some important sensors cannot be shielded.