Injection Mold Design for Child Safety Seat Headrest with Double Slider Secondary Core‑Pulling Mechanism

doi:10.19491/j.issn.1001-9278.2020.07.015

Abstract

Abstract:

According to the characteristics of plastic parts, a single?parting surface and hot?runner mold with one module and one cavity was designed by using the UG software. For the lateral demolding products easy to generate some problems like deformation and the limitation in mold space distance, we designed an ejector in the small slider and a hydraulic core?pulling mechanism with small sliders on the top of big sliders, and emphatically analyzed the key points for the design of each system in the mold. The practice production proved that the structural design of the mold were reasonable and advanced to realize the automatic production of products, and all of performance index could meet the requirements for the plastic parts.

Key words: safety seat headrest, mould mechanism, hydraulic pressure core?pulling mechanism, automation

CLC Number:

TQ 320.66⁺2

Yinglong FU, Mingchao SHAO. Injection Mold Design for Child Safety Seat Headrest with Double Slider Secondary Core‑Pulling Mechanism[J]. China Plastics, 2020, 34(7): 92-96.

Figures/Tables 10

Fig.1. Plastic part structure

Fig.2. Design of casting system

Fig.3. Filling time analysis

Fig.4. Main parting surface of plastic parts

Fig.5. Integrally embedded cavity and core design

Fig.6. Slider with thimble core pulling mechanism

Fig.7. Hydraulic core?pulling mechanism

Fig.8. Cooling channel of the moving mould

Fig.9. Cooling channel of the fixed mould

Fig.10. Mold assembly drawing

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