1, Start closing
1. Starting die closing pressure: the initial setting value is 25. When the pressure is too small and the speed is too slow, try to increase the speed. If the pressure is too small, the speed can not be increased to the required speed. Add + 5 every time. Note that when the pressure is set higher, it will make the moving template instantly increase high pressure, change the static state and change the movement, so that the moving template hole and the pull rod produce huge friction, For a long time, it speeds up the wear of the hole and pull rod of the moving die plate, affects the stability and precision of the moving template movement, and may affect the production of the die with high precision requirements for the clamping mechanism.
2. Starting closing speed: it depends on the actual situation, but it should be noted that the action should not be too fast. The speed should be consistent with the next mold closing action, rather than obvious pause action switching. It is better to set the speed high and pressure low, and control the speed by pressure.
2, Low pressure die closing
Themold is pushed by low pressure and low speed, starting from the distance requiring safety protection until the mold is completely closed
1. Low pressure die closing speed: according to the actual situation, the speed should be slow. If it is too fast, even if the low pressure is set, the inertial motion still has a huge impact destructive force. When there are unexpected hard obstacles such as sliding position deviation and thimble breaking out, the mold closing action will greatly reduce the impact damage under the effective mold closing protection parameters of low pressure and slowness.
In fact, the speed can be dozens, and then do not move it, and then start to adjust the pressure to a very low level, for example, 5 for testing, control the speed with pressure, and then step by step pressurize to the appropriate mold closing protection speed.
2. Low pressure die closing pressure: you can adjust the speed to a very high level and the pressure to a very low level. For example, 5 is used for mold closing test. Because the pressure is low, even if the speed is set very large and the support of pressure is lost, the mold closing speed will not be very fast. On the basis of 5, increase the ideal mold closing protection speed a little bit, and close the mold with the lowest pressure.
3. The starting position of low-pressure die closing: (i.e. the end position of the last section of mold closing) this value with large difference in size should be set according to the size and structure of the mold. Generally, it is between 5-20 cm before the mold is closed. This position should be handled by everyone. Many people start to use low pressure only when the mold is closed too close. They should get the distance of low-pressure protection in advance. When the mold is impacted by the higher pressure speed of the previous section, the sliding position is shifted, and the ejector pin breaks out, the sudden impact occurs. At this time, the low-pressure protection is ineffective and late.
4. End position of low-pressure mold closing (i.e. the starting position of high-pressure mold locking): this parameter refers to the position where the mold just closed completely, that is, the moving template has stopped at the end. During debugging, adjust the low-pressure pressure and speed, and then set the position to 0, and then close the mold manually to get a value of the low-pressure mold closing position;
For example, the value is 2.2, which is affected by the setting and adjustment of electronic ruler, the tightness of mold adjustment, and the mold closing pressure. Moreover, this value will be affected by the machine precision and the small impurities on the mold surface. There may be a small change in each mold closing. Therefore, the termination position should be set a little higher, such as 0.2 to 2.4 (refer to plus 0.1-0.3), with the lowest value If you don't set the position value obtained by the low-pressure die closing test a little higher, you can directly use 2.2. It may often appear that the low-pressure mold closing position is greater than 2.2, and the low-pressure position can not end and cannot be transferred to the high-pressure mold locking.
However, more people set the mold to stop at low pressure when there is still a few centimeters or more distance before the mold is completely closed. High pressure is used, and the low-pressure protection is ineffective. It is often seen that some molds are accidentally brought out of the mold to form a product closed mold, and the steel mold cavity is pressed into deformation.
3, High pressure mould locking
Start to straighten the closed mold lock with the high-pressure push hinge. Many people set the mold is not completely closed, began to use high pressure, low pressure protection failure.
1. High pressure mold locking pressure: the initial setting value is 60. When it cannot meet the requirements, each time + 10 pressure will be added. If the pressure is too high, it is unnecessary to increase the machine load;
2. High pressure mold locking speed: the initial setting value reference is 25. When it can not meet the needs, try to increase the pressure first, and then try to speed up the speed, each time + 10. If the speed is doubled, the friction loss of the clamping mechanism will increase n times.
You should pay attention to the difference between mold closing and mold locking that I mentioned above is: mold closing = moving template movement; mold locking = straightening and locking closed mold with high-pressure pushing machine hinge. In fact, most people do not make the right start and end position of low-pressure mold closing protection settings;
First, the mold is too close to the low pressure start position, the position is too small, and the low pressure protection comes too late, which is affected by the higher and faster pressure and speed of the previous section (start, fast, high speed).
The other is that the low-pressure end position ends too early. When the mold is not closed for several centimeters or more, the end of low-pressure protection is terminated, and the switch to high-pressure mold locking. These two problems generally exist at the same time, which means that the low-pressure mold closing protection position is too short, which is threatened by the impact of higher pressure and faster mold closing speed, and then by the pressure of high-pressure mold locking, which is equivalent to two-sided clamping The low voltage mold closing protection is invalid.
