2022.09.27
1. First drain the condensed water in the steam line and in the compressed air filter unit. First, drain the condensed water in the steam pipe and the compressed air filter device, and drain the condensed water in the compressed air filter device. 2. Add a small amount of lubricating oil to the 4 guide rods of the discharge door and the upper and lower sealing sleeves of the main shaft of the bolt. 3. Turn on the power, start the main and auxiliary rotation through the touch screen, close the discharge door, and open the motors on the fluidized drying bed. 4. Adjust the computer touch screen to the process parameter page, and adjust or infiltrate various parameters according to the density of the material. 5. Manually preheat the pre-engine through the touch screen, and preheat the barrel temperature to 80-90℃. 6. According to the requirements of sending materials, use the step-by-step method to reach the weight weighing value. 7. After weighing, feed the material, and adjust the feeding time until the material in the weighing hopper is completely exhausted and then extend it for 2-3S. 8. The barrel is heated and decompressed. The temperature of the barrel is generally set at 95-110°C, and the pressure of the barrel does not exceed 0.045Mpa, which is generally set at 0.025-0.035Mpa; it can be adjusted by adjusting the steam pressure reducing valve, Proportional valve or adjust the pointer of electric contact pressure gauge to control the temperature and pressure in the barrel. After heating to the upper material level sensor, the machine automatically turns off the steam valve, and starts exhausting or decompressing after a few seconds of pressure stabilization, and the exhausting time is 3-6S. 9. Open the feed door. 10. Discharging and cleaning, the discharging time is set until the material in the barrel is exhausted and then delayed for 2-3S, and the bottom cleaning is to start closing the material 3-5S in advance. When the material door cylinder is closed in place, there will be a new number to stop, and the bottom cleaning mainly flushes out the blocked material in the vent gap and helps to discharge the material. 11. The cleaning of the sight glass is to blow air intermittently, mainly to ensure that the material level sensor (the key component for controlling the density of the material) does not have errors. The blowing time should not be too long, which will easily affect the material. Interval 2-3S. The blowing time is between 0.1-0.3S. 12. Close the material door (limit switch control). 13. When the pre-expander starts to discharge material for the first time and the cylinder is opened in place, all the motors on the fluidized drying bed start to run. We master the features of the fully automatic multi-function and the foaming machine by detecting the foaming material in the fluidized drying bed. foam density and other information. After 3-4 cycles, after the EPS foaming density is detected by the balance, if there is an error, it can generally be solved by the following methods: a. Increase or decrease the weight of the beads printed by EPS. b. Adjust the flow rate of the pressure reducing valve. c. Move the feeding sensor. d. Increase or decrease the holding time. When the foaming density of EPS is adjusted to the required specific gravity, the automatic automatic feeding can be used to carry out secondary continuous automatic feeding of EPS.
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