Deformation or breakage of mold locating pins in hot-press lamination

Failure of lamination mold locating pins causes layer deviation. Deformation usually gradually intensifies after demolding, especially in asymmetric structures or parts with large wall thickness differences. This problem causes product dimensions to exceed the tolerance range, affecting assembly accuracy and product function.

(1) Pressure parameter aspect: locating pin material not resistant to high temperature/pressure causing deformation, which may cause internal material damage or excessive resin bleed-out, affecting product structural uniformity. (2) Process factor: fatigue fracture from repeated use; this factor affects the '2079851475616104453 and final quality of the product. (3) Process aspect: uneven cooling causing shrinkage differences in various regions producing thermal stress. (4) Design aspect: asymmetric structure or uneven wall thickness distribution causing anisotropic shrinkage. (5) Material aspect: differences in molecular chain orientation or fiber alignment direction causing different shrinkage in each direction.

(1) Implementation measures: make locating pins from heat-treated alloy steel or high-temperature-resistant materials; formulate specific operation plans based on actual production conditions and verify implementation effects. (2) Equipment maintenance: regularly inspect and replace locating pins; formulate regular inspection and maintenance plans to ensure the equipment is in optimal working condition. (3) Formulation optimization: increase the number of locating pins to share the load., determine the optimal addition amount through small-batch tests, and verify the impact on the comprehensive performance of the product. (4) Preventive measures: perform shrinkage and warpage simulation analysis during the product design stage to optimize structure and process plans in advance.

Deformation problems originate from internal stress caused by uneven shrinkage or heating in various parts of the product, and need to be systematically solved from three aspects: structural design, process parameters, and post-treatment.