Will the injection molding machine test die, thimble white what is going on, what should I do, ask for help?
This is the debugging problem. Is the size of the clamping force, the debugging of the rod and the electronic ruler in place? Is the release force reasonable?
The design of the grinding tools is not smooth! Take the mold as slowly as possible, the injection pressure can not be too large and too long ~ cool down for a long time
It is caused by bad demoulding of moving dieReduce the holding pressure, increase the cooling time, and then die polishing.
Try not involved in forming pressure, just when there is surface dent to check whether there is a white hat, such as the draft or ejection resistance problems, recommend die; if it is a problem of technology can reduce the pressure, pressure holding try.
Top White is the general plastic injection molding products, injection molding, mold thimble pressure injury, pressure injury parts appear albino;Causes and elimination methods of defectsWhite hat, also called the top white. The reason for the appearance of "top white" is mainly due to the excessive force at the top of the white place. In the white part of the plastic parts, the chemical resistance and mechanical properties of them are greatly weakened. The detailed analysis is as follows. 1) injection moldIf the surface of the cavity is rough, the resistance of the mould will be increased and the top White will be reduced. Therefore, the surface roughness of the cavity should be reduced. If the top rod is at the weak part of the plastic parts, it will aggravate the phenomenon of top white. In this case, the ejection device should be placed at the wall thickness.If the mould is too small, the release resistance of the plastic parts will be increased, and the force of the plastic parts will be increased when the top is pushed out.In order to improve the strength of the top part, local strengthening can be done here, and the structure and wall thickness can be strengthened.If the contact surface between the rod and the plastic parts is too small, the local stress of the plastic parts is very large, so that it produces a top white. In this case, the sectional area of the end of the push rod should be appropriately increased.The plastic parts of cores, demoulding is difficult, is also prone to white hat, which will release the core and the plastic vacuum pieces, such as the core arranged in the valve to release the vacuum is a good method.
