What are the adjustment skills of the injection molding […]
What are the adjustment skills of the injection molding machine?
1. Mold transparency method
When we adjust the machine, we often sigh: If the mold is transparent, it will be fine! In this way, you can see the entire filling process of the melt, and see how and when the defect occurred. When we design a certain glue injection process, whether the glue injection process is actually completed according to the envisaged requirements, whether the starting point is set correctly, etc., we hope to see a series of questions.
Transparent injection mold model
In fact, it is impossible to directly see the melt filling process without high-tech equipment. But there is an indirect method. Using this technique, each operator can be as clear as if he saw the filling process, and the method is very simple.
We only need to increase the injection time every second, one beer for each additional second, and then arrange the unmatched beer pieces in order, so that the filling of the melt can be clearly seen Process until the cavity is filled. If you want to take a closer look at a key position, only 0.1 second per beer is added at this key position, so you can see clearly.
It is even easier if you just want to see if the starting point is accurate. You only need to adjust the pressure and speed of the next stage to 0, and you can see where the starting point is, instead of using the method of increasing every second to observe slowly.
It should be reminded here that since the melt will have a little inertial expansion after the injection stops, the actual shape of the beer part when the injection is stopped will be slightly different from the moment when the injection is stopped. The actual starting point should be earlier than the beer you see.
2. Positioning injection method
The so-called "positioned shot glue" method is a tuning method that evolved from our commonly used fast shot glue to lower-level slow shot glue. This method is to adjust the slow speed and pressure of the next stage to zero, so that the rapid injection of the previous stage will stop immediately when it reaches a set starting position, allowing the pressure stored in the cavity to be naturally released. For the final filling of the cavity and holding pressure. Usually the starting point is set at the point where it just fills the cavity, and then adjusts to move forward and backward according to the actual situation.
In the commonly used adjustment technique of "fast-turn and slow-shot glue", the three levels of slow speed, fast speed, and starting position are all interrelated and affect each other, so those with inexperience are not easy to hold.