模具加工中模具变形的发生是指模具在工作项目中发生过大的弹性变形或塑性变形，使模具无法正常工作或产品质量不合格。原因及排除方法如下。
The occurrence of mold deformation in mold processing refers to the excessive elastic deformation or plastic deformation of the mold in the work project, which makes the mold unable to work normally or the product quality unqualified. The causes and troubleshooting are as follows.
刚性不足
Insufficient rigidity
在注塑成型过程中，模具承受着巨大的保压压力。如果这种压力导致模具永久变形，模具将无法使用，但即使在弹性限度内，模具产生的变形也可以恢复。模具的凝固和成型会使模具的打开变得困难甚至不可能。发生这种情况时，无法对模具进行结构改造，但可适当降低注射压力，或从外部加装框架以增强刚性。虽然不好看，但是也用过。
In the process of injection molding, the mold bears great pressure. If this pressure causes permanent deformation of the die, the die will not be used, but the deformation generated by the die can be recovered even within the elastic limit. The solidification and molding of the mold will make the opening of the mold difficult or even impossible. In this case, the structure of the mold cannot be modified, but the injection pressure can be appropriately reduced or a frame can be added from the outside to enhance the rigidity. Although it doesn't look good, it's also used.
模具装配错位
Mold assembly dislocation
如果模具组装不当，如模具对中不良，合模部位及其接头对位不准确，造成熔体充填不平衡，容易造成模具变形或错位。对此，应重新组装模具，有时可以通过校正浇口来校正充模不平衡。
If the mold is not assembled properly, such as poor alignment of the mold, inaccurate alignment of the clamping part and its joint, resulting in unbalanced melt filling, which is easy to cause mold deformation or dislocation. In this regard, the mold should be reassembled. Sometimes the mold filling imbalance can be corrected by correcting the gate.
模具的正确使用和保养是提高模具质量的一大因素。比如模具的安装调试方法要合适，有热流道的情况下，电源接线要正确，冷却水回路要符合设计要求，注塑机的参数，模具制作过程中的压铸机和压力机应符合设计要求。
The correct use and maintenance of molds is a major factor in improving the quality of molds. For example, the installation and commissioning method of the mold should be appropriate. When there is a hot runner, the power wiring should be correct, the cooling water circuit should meet the design requirements, the parameters of the injection molding machine, and the die casting machine and press in the process of mold manufacturing should meet the design requirements.
济南注塑加工人员认为在正确使用模具的同时，还需要对模具进行定期保养。导柱、导套等与模具有相对运动的部位应经常加注润滑油。对于锻造模、塑料模、压铸模等模具，成型前应在成型件表面喷涂润滑剂或脱模剂。
Jinan injection molding workers believe that while using the mold correctly, they also need to maintain the mold regularly. The parts with relative movement with the die such as guide post and guide sleeve shall be filled with lubricating oil frequently. For forging dies, plastic dies, die-casting dies and other dies, lubricant or release agent shall be sprayed on the surface of the formed parts before forming.
所以模具设计时要考虑周全，包括模具材料的选用，模具结构的可使用性及安全性，模具零件的可加工性及模具维修的方便性，这些在设计时都要考虑到，权衡综合性能，有利因素很大化。
Therefore, the mold design should be considered comprehensively, including the selection of mold materials, the usability and safety of mold structure, the machinability of mold parts and the convenience of mold maintenance. These should be taken into account in the design to weigh the comprehensive performance and greatly reduce the favorable factors.
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