For the arc core-pulling injection mould,according to the structure and material properties of the plastic parts,the location and structure of the gate are optimized.CAE simulation analysis found that the maximum deformation of the plastic part located at the filling end and the maximum wall thickness was 0.739 mm,which was within the allowable range of the design.The oil-cylinder was used as the driving power source,and the gear and internal gear were driven by the rack to rotate to realize the core-pulling action;The internal gear was designed as special-shaped non-standard gear,which reduced the space occupied and realized the purpose of two-cavity layout.Aiming at the problem that the cooling water path of the arc-core was difficult to be machined,the designed processing procedure was as follows:first rough machining according to the straight core,drilling and processing the cooling water path of the core,then hot bending the core into the required shape,and tempering treatment,and finally finishing the core to the design requirements,so as to achieve the conformal cooling effect.For the key parameters of the transmission mechanism,a combination of theoretical calculation verification and CAE simulation analysis was used for verification.After testing,the calculation verification efficiency was improved by about 4 times.
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