Each injection molding position for annual maintenance program depends on the different mold cycle. Here are some general principles can make each mould users to ensure hot runner, heater, guide pillar and thimble mold components such as effective operation, to prevent the occurrence of unexpected circumstances.
1. Check the scattered hole if there is a warning of rust or damp phenomenon - if you are found near hot runner vent have rust or damp phenomenon, it means that the internal condensation or possible water pipe burst. Damp phenomenon could cause short circuit of heater is deadly. If the machine is not all year-round to run, but in the evening or weekend will shut down, this will increase the risk of condensation phenomenon.
2. Remind operators don't put the gate in the hot mouth to "clean up" off - if the operator happened to see there was a piece of stainless steel in the mold runner, it might be shuikou component is actually a point. "Clean" this seemingly is often destroyed hot tongue. Not to damage the hot mouth, please confirm before taking action under the tongue type of hot runner system, ensure that all operators are trained and able to identify their access to all of the different types of tongue.
3. The taxi stop button - for all year-round operation of the machine, the work should be conducted once a week. At the end of a good time to give these parts to a routine of lubricating maintenance.
4. Interaction to verify the resistance of the heater - you should start to use the heater was measured the resistance value of it, now it is time again to measure and compare. If there are 10% of the floating up and down resistance, can consider to replace the heater in order to make sure it won't be in the critical moment in the process of production out of the situation. If there is no measured the resistance value of the original from the measuring a right now and check the heater in the future will be the value used as the reference data.
5. Check the guide pin and guide suites for signs of wear - looking for have a shave? P or wipe? P and so on, the wear is due to lack of lubrication. If the mark is just emerging, you can also pass to guide pillar and guide bush lubrication to prolong its life. If the wear is very serious, it's time to replace the new parts. Otherwise, the mold cavity and core parts may not fit well, different parts in the cavity wall thick.
6. Check the current situation in water outlet connecting a hose, let the water through the pipe until the pail. If the flow of water is not clear or colored might have rust occurs, the current weak means somewhere jam. If it is found that these problems will all pipe drill wear again, ensure unblocked (or take you to the most commonly used any method to clean). Improve the plant water treatment system can prevent the recurrence of future caused by rust and blocking all kinds of problems.
7. Clean the thimble - after a year's time, thimble will due to hoarding and membrane gas impurities become very dirty. Recommended every six to twelve months to get a good cleaning with mold cleaning agents. After cleaned, coated with a layer of lubricant to prevent scratches on thimble or fracture.
8. See hot pot mouth radius area if there is a fracture - fracture by residual heat in the machine's mouth loose hardens when pieces of plastic injection molding forward from injection plastic cylinder clamping force caused by the component. The cause of the problem may be the center line of the no alignment. When found fracture want to consider these two possibilities. If all the damage has been too serious to prevent petals shape leakage (mold users previously used a term refers to between the guide sleeve and hot mouth of the machine of plastic leak), you should replace gate set.
Using these tips will help you to find and to prevent potential problems, ensure your mold is always running in top form.