Uppmärksamhet bör ägnas när formsprutningsmaskinen stängs av

Omformsprutningsmaskin is suspended, the remaining plastic must be sprayed out or let the plastic pass through the formsprutningsmaskin to clean the remaining plastic in the injection cylinder or barrel. In case of plastic fading, the number of blow-outs will increase. For minor repairs; the heater of the injection cylinder must be adjusted to the maximum value, such as 150°C, to minimize the possibility of thermal decomposition.

Before injecting thermally stable plastics (such as PS or PE), if you have shut down for one night in advance, you only need to turn off the sliding plate at the bottom of the hopper and the heater of the injection cylinder (only the heater of the nozzle is turned on), and the injection cylinder is blown out clean. After the nozzle is completely cleaned, cool the barrel as high as possible. After the formsprutningsmaskin has cooled down, turn off all equipment. The formsprutningsmaskinär helt redo att värma upp igen.
Omtemperature of the injection cylinder or barrel is high, only slightly modify the above steps to prevent the resin from being decomposed by heat. For example, turn off the heater of the injection cylinder (only turn on the heater of the nozzle), or cool the barrel as high as possible, during which the remaining resin is continuously sprayed out. Close the slide plate at the bottom of the hopper, and try to spray the oblique rubber in the barrel again. If no more plastic is sprayed, the equipment can be closed for the next use.

Omplastic decomposes or burns in the formsprutningsmaskin, it will eventually change color, making the finished product waste. In this case, the formsprutningsmaskinmåste stängas av helt och sprutas rent. Den förebyggande metoden är att använda en plast med högre termisk stabilitet för att spränga ut det värmekänsliga hartset så att det tål efterföljande uppvärmning.
Some plastics (such as POM, PVC) are easy to decompose. Ommachine stops suddenly during injection molding, the heater of the nozzle should be turned on before the injection is continued. Only when the plastic has the nozzle melted, can the heater of the injection cylinder be turned on. The temperature of the shooting cylinder or barrel should be adjusted to about 140°C. Then raise the temperature to the processing temperature, and spray the remaining plastic as soon as possible. The sprayed plastic must be put into cold water. If you want to change other plastics, use PS or PE natural, non-fireproof grades as the cleaning agent; if the remaining material is not completely sprayed, please do not mix POM with PVC, or mix them one after another.

Innan du stannar maskinen eller byter till en annan plasttyp, kontrollera att stegen är korrekta. Materialleverantören har redan skrivit ut och förberett ett häfte med tillräcklig information. Läs den noggrant före användning för att förstå "standardavstängningsproceduren" som krävs för varje plast. Broschyren ska placeras bredvidformsprutningsmaskinså att operatören kan läsa den när som helst.