Basic structure and working principle of injection mould

A) Basic structure
1. Molded parts (including punches, dies, cores, etc.)
Function: Mainly determine the geometric shape and size of the product.
2. Guide mechanism (guide post, guide sleeve, guide post hole)
The role of the guiding agency:
1) Ensure the accurate alignment between the movable and fixed molds or between other parts of the mold to ensure the accuracy of the shape and size of the product.
2) Avoid collision and interference between various parts in the mold.
3. Pouring system (main runner, branch runner, gate, cold slug, draw rod, etc.)
Function: Lead the plastic melt injected by the injection machine to the closed cavity.
Its shape and size have an important influence on the flow characteristics of melt filling and the quality of parts.
4. Ejection and demoulding mechanism:
Concept: a device to eject the part from the mold cavity.
Composition: pull rod, ejector rod, ejector fixed rod, ejector bottom plate, etc.
5. Lateral parting and lateral core-pulling mechanism:
Before opening the mold and ejecting the product, the mechanism first draws out the flap module or the side core that forms the undercut (or side hole) from the product.
6. Exhaust structure: (including exhaust groove, matching clearance exhaust, etc.)
In the plastic melt filling process, the air in the mold cavity and various gases volatilized by the plastic itself are removed to avoid molding defects.
7. Temperature regulation system:
Purpose: In order to meet the mold temperature requirements of the injection molding process, to ensure the plastic melt filling and the solidification of the product.
8. Supporting parts:

Function: Install and fix or support the molded parts and assemble them together to form the basic skeleton of the mold.