Design of Injection Mould with Oblique Core⁃pulling on Both Sides of Moving and Fixed Molds along Mold Opening Diagonal Direction

doi:10.19491/j.issn.1001-9278.2021.06.016

Abstract

Abstract:

According to the structural characteristics and technical requirements of automotive plastic parts， we designed a mold with oblique core?pulling on the both sides of moving and fixed molds along the mold opening diagonally direction. This design resolved the problem that the core?pulling and demolding of the stepped hole was not parallel to the mold opening direction. The mould was designed with a two?step core?pulling mechanism equipped with a separable top clamp plate with the A plate on the fixed mold and a core?pulling mechanism equipped with a separable B plate with the support plate on the moving mould. Meanwhile， a sequential distance parting mechanism and an accompanying mechanism for the ejector were designed. The mold has been tested to meet the production requirements and has been applied for the mass production.

Key words: injection, mold, oblique core?pulling, two?step core?pulling mechanism, sequential distance parting mechanism, accompanying mechanism for ejector

CLC Number:

TQ320.66⁺2

LIU Qingdong. Design of Injection Mould with Oblique Core⁃pulling on Both Sides of Moving and Fixed Molds along Mold Opening Diagonal Direction[J]. China Plastics, 2021, 35(6): 100-105.

Figures/Tables 14

Fig.1. Structure of the plastic part

Fig.2. Parting surface

Fig.3. Appearance of the mould

Fig.4. Stationary mould fixed half

Fig.5. Movable mould moving half

Fig.6. Gating system

Fig.7. Slides

Fig.8. Sequential distance parting mechanism

Fig.9. Slides on stationary mould fixed half

Fig.10. Slides on movable mould moving half

Fig.11. Accompanying mechanism for the ejector

Fig.12. Angle pin for the slide?pulling

Fig.13. Ejector

Fig.14. Cooling system

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