Causes Of Plastic Mold Failure

Plastic mold processing molds are mainly composed of pouring system, temperature adjustment system, molding parts and structural parts. Among them, the pouring system and the molded parts are the parts that are in direct contact with the plastic and change with the plastic and the product. They are the parts of the plastic mold that are complex and change a lot, requiring high processing finish and precision.

1. Springs and other elastic parts are easy to damage during use, and usually break and deform. The method adopted is to replace, and the specification and model of the spring must be paid attention to during the replacement process. The specification and model of the spring are confirmed by the three items of color, outer diameter and length, and it can be replaced only when the three items are the same.

2. The punch is prone to breakage, bend and breakage during the processing and use of plastic molds, and the punch sleeves are generally broken. Damaged punches and sleeves are generally replaced with parts of the same specification. The parameters of the punch mainly include the size of the working part, the size of the installation part, and the length.

3. Fastening parts, check whether the fastening parts are loose or damaged, the method adopted is to find the same specifications for replacement.

4. Pressing parts such as pressing plates, Uniglue, etc., unloading parts such as stripping plates, pneumatic ejectors, etc. During maintenance, check the relationship between parts of each part and whether there is damage, repair the damaged part, check whether there is air leakage by pneumatic jacking, and take measures for specific conditions. Replace if the trachea is damaged.

Although the structure of plastic molds may vary widely due to different types and properties of plastics, shapes and structures of plastic products, and types of injection machines, the basic structure is the same.