Initial setting value is referenced to 25. When pressure is too small and speed is too slow, you can try to increase speed. Pressure is too small to increase speed to required level, so speed can be increased by 5 at a time. Note that when pressure is set to a large value, moving mold plate will be instantly increased in pressure to change static state into motion state,so that movable mold plate hole and tie rod will generate a huge friction force, which will accelerate wear of the machine's moving mold plate hole and tie rod for a long time, affecting smoothness and precision of moving mold plate, reducing precision, and may affecting production of individual molds with high requirements on clamping mechanism.

Based on actual situation, but pay attention that movement should not be too fast. Speed should have a continuous movement with next clamping action, rather than obvious pause action switching. It is best to set speed high and pressure low, control speed by pressure.

Push mold at low pressure and speed, starting from distance requiring safety protection to mold's complete closure

Based on actual situation, speed should be slow. If speed is too fast, even if a low pressure is set, inertial movement still has a huge impact destructive force. When there are unexpected hard obstacles such as slipping position deviation, ejection pin breakout, mold clamping action is entered. Under conditions of effective low pressure and slow mold clamping protection parameters, impact damage is greatly reduced.
In fact, speed can be tens, then it is not moved, and pressure is adjusted to be very low, such as 5 for testing. Pressure is used to control speed, and then pressure is gradually increased to a suitable clamping protection speed.

You can first adjust speed to a high value and pressure to a very low value, such as 5 for mold clamping test. Because pressure is low, even if speed is set too large and support of pressure is lost, mold clamping speed will not be very high. Based on pressure control speed, on the basis of 5, add a little bit to ideal mold clamping protection speed, and close mold with the lowest pressure.

This value should be set according to size and structure of mold to a large difference in value, usually between 5-20 cm before mold is closed. Many people just use low pressure to set mold too close. Distance that should be protected by low pressure in advance is affected by large pressure speed of previous section. When unexpected hard obstacles such as slipping position deviation, ejection pin break, impact is fast and low voltage protection is invalid, and it is late.

This parameter is position where mold is just completely closed, that is, moving mold plate has stopped at the end. When adjusting, first adjust low-pressure pressure and speed, then set position to 0, close door, and manually close test to obtain a low-pressure close position value;
For example, this value is 2.2, which is affected by adjustment of electronic ruler, mold adjustment setting, clamping pressure, also it will be affected by accuracy of machine and small debris on mold surface. There may be small changes every time mold is closed, so set termination position to a slightly larger value, such as adding 0.2 to 2.4 (reference add 0.1-0.3), to protect mold accurately at the lowest position. If position value obtained by low-pressure mold clamping test is not set to a larger value, use 2.2 directly, it may often occur that low-pressure clamping position is greater than 2.2, low-pressure position cannot be ended and cannot be transferred to high-pressure clamping.
However, more people set mold with a distance of a few centimeters or longer, they will terminate with low pressure and start to use high voltage. Low pressure protection will not work. It is often seen that some molds are accidentally closed with ejected formed products, mold cavity is deformed.

 

Began to use a high-pressure pusher hinge to straighten and tighten closed mold lock. Many people just use high voltage when mold is not completely closed, low voltage protection fails.

Initial setting value is referenced to 60. When it cannot be met, pressure is increased by 10 each time. Pressure is too large, and it is not necessary to increase load on the machine.

Initial setting value is referenced to 25. When requirements cannot be met, first try to increase pressure. If not OK, then try to increase speed by 10 each time. High-pressure mold locking should not hear excessive noise, speed up twice, friction loss of locking mechanism increase N times.
Everybody should pay attention to difference between clamping and locking as I said above. Mold clamping = movable mold plate movement, mold locking = Straighten and lock closed mold with a high-pressure pusher. For setting of low-pressure clamping protection, in fact, most people do not do right in low-voltage clamping start position and end position;
First, mold was too close when low pressure started position, position was too small, low pressure protection came too late, was affected by higher and faster pressure, speed of previous paragraph (start, fast, high speed).
Second is that low-voltage termination position ends too early. When mold is not closed for a few centimeters or more, low-voltage protection is terminated and switched to high-pressure clamping. These two problems generally exist at the same time, which results in low-pressure mold clamping protection position being too short. It is threatened by a large pressure and a rapid mold clamping impact, then pressed by both sides of mold clamping pressure, which is equivalent to invalidity of low-pressure mold clamping protection.
Under protection of invalid low pressure, following problems may occur when mold is crushed and broken: (clamping obstacles with higher pressure clamping = compression mold, clamping with hard obstacles with higher speed clamping = impacting mold)
1. Mold is pressed, which reduces precision of mold, changes injection molding conditions, and makes debugging of process parameters more difficult.
2. Mold is pressed, which reduces precision of mold, increases burr of formed product, increases work intensity and workload of production workers, accelerates fatigue of workers, decreases output, quality and efficiency of products.
3. Mold is pressed, which causes precision of mold to decrease, burr of formed product is increased. Original staff can no longer meet labor needs of work. It needs to increase manpower to make labor-intensive production of manufactured products, labor more intensive, increase labor costs, and increase cost of product manufacturing.
4. Mold is pressed and bumped, which causes mold to be damaged and unable to produce, delays production, requires time and cost to repair mold.
5. Smooth surface of mold cavity was hit and crushed, no matter how it is repaired, it is difficult to avoid leaving a patch, leaving a mark on formed product. For finished plastic parts that belong to direct view, a smooth product surface has a repaired trace, which is a flaw, product quality and grade may be affected as a result.
6. Mold is crushed and crashed, bad mold is welded and repaired. Quality and performance of mold accelerates, incidence of mold failure increases, cost of mold operation and maintenance increases. With repairs and gradual decline in precision, service life of injection molds will eventually be pushed away by accidental impact during production because they are not properly protected in production, final life will be shortened.
To sum up, all things that have a lot of impact on production quality, output, cost, and efficiency should be done in order to avoid them.