Thermosetting plastic mold manufacturing features

(1) the cavity and core size of the compression mold is determined by the shape and dimensional accuracy required by the plastic parts. Because the mould is in heating (60 ℃ -- 150 ℃) conditions of the job, so when heated size will swell, and cavity after cooling, the size will shrink again, over and over again, alternately in compression mold, in addition to carefully according to the size of pattern processing and manufacturing, also should put the cavity and core wear and heat bilges cold shrink these factors into consideration, so that the mold use for a long time, To ensure the quality of products.

(2) in the manufacture of compression mold, the core and cavity should be processed. After processing, paraffin wax or plasticine can be used to repair while trial dressing processing. After the inspection, then hardening and grinding.

(3) In order to facilitate the removal of products, cavity and core should be processed out of the mold slope.

(4) The position accuracy of the upper and lower die of the compression mode is generally guaranteed by the guide column and guide sleeve. In processing, guide column, guide sleeve installation hole should be consistent, with the gap should be appropriate. Forming hole, insert hole, core fixed plate on the core hole and guide column, guide sleeve hole should maintain a certain position accuracy, in order to make the mold assembly, flexible movement.

(5) The forming parts of the compression die should be polished and chrome plated, so that the surface roughness can reach more than 0.20μm.