Design of Injection Mould for Face Cover of Driving Recorder

doi:10.19491/j.issn.1001-9278.2021.11.020

Abstract

Abstract:

The technical requirements and structure characters of the face cover of a type of driving recorder were introduced， and a type of injection mould with two cavities and three different core?pulling mechanisms was designed for the face cover. The first mechanism is a tunnel mode core?pulling mechanism with a pushing block fixed on the top plate. The second mechanism is a titling angular core?pulling mechanism. In the middle of this mechanism， a double T?blocks core?pulling mechanism as the third mechanism is fixed， and the other two mechanisms are linked with it. The fourth mechanism is a common lifter. The computing formulas of core?pulling distance for the titling angular core?pulling mechanism and the double T?blocks core?pulling mechanism were given. The runner system for the mould is open hot nozzles turning to round runners and then to fan?shaped gates. Ejection pins and sleeves were used for the ejector system of the mould.

Key words: driving recorder, core?pulling mechanism, pushing block, lifter, runner system, ejector system

CLC Number:

TQ 320.66

ZHOU Jianan. Design of Injection Mould for Face Cover of Driving Recorder[J]. China Plastics, 2021, 35(11): 133-137.

Figures/Tables 9

Fig.1. Three dimensional model of the face cover of the driving recorder

Fig.2. 2D drawing of the face cover of the driving recorder

Fig.3. Schematic diagram of the gating system

Fig.4. Schematic diagram of the tunnel mode pulling mechanism

Fig.5. Titling angular core?pulling mechanism

Fig.6. Double T?blocks core?pulling mechanism

Fig.7. Schematic diagram of lifters

Fig.8. Schematic diagram of all pulling?core mechanisms

Fig.9. Assembly drawing

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