一、 The cause of the mold sliding

• Insufficient lubrication of the sliding part of the mold
• The hardness of the sliding part of the mold is insufficient
• Deformation of the sliding part of the mold

二、 Associated knowledge

• The mold is deformed and misaligned due to the action of injection pressure, and the sliding part of the mold is applied by excessive pressure and the phenomenon of occlusion. So the rigidity of the mold should be large. Pay attention to the screws of each part of the mold to be tightened and firm.
• I want to quench the sliding part so that the sliding part has sufficient hardness.
• The sliding parts are made of different materials such as steel and copper to prevent seizure

三、Solution

• Immediate: Use lubricants such as molybdenum disulfide and copper powder in the sliding part.
• Long-term: Quenching the sliding part and strengthening it with the grooves of the entire mold

四、 Due to the difference in plastic materials

• There is no particular reason

五、References

• If the lubricant contains oil, it is easy to cause reticulated cracks when attached to the product.
• When the mold has a slight occlusion, the lubricant is added after polishing.