사출성형의 냉각 파라미터가 플라스틱 롤러의 수축에 미치는 영향
The effect of injection molding cooling parameters on shrinkage of plastic roller
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A plastic roller for opening and closing the safety door of the injection molding machine was molded. Thedimensional change of the measurement position of the roller was studied when the cooling time was applied differentlyamong the molding conditions, and when the temperature of the coolant applied for mold cooling was also applieddifferently. Cooling times of 300 seconds and 400 seconds, hot and low-temperature coolant were applied. When thelow-temperature coolant was applied, the measuring point of the roller shrank by 0.03 mm. However, when thehigh-temperature coolant was applied, the measuring point shrank by 0.3 mm. It was found that the application oflow-temperature coolant among coolants was more suitable for the reference dimension of the molded article comparedto the application of high-temperature coolant. Among the cooling water applied for the molding of plastic rollers, whenhigh-temperature coolant is applied, the shrinkage rate measured immediately after ejection was smaller than whenlow-temperature coolant is applied. However, it was found that post shrinkage, which occurs over time, occurs muchlarger when high-temperature coolant is applied.
Abstract
A plastic roller for opening and closing the safety door of the injection molding machine was molded. Thedimensional change of the measurement position of the roller was studied when the cooling time was applied differentlyamong the molding conditions, and when the temperature of the coolant applied for mold cooling was also applieddifferently. Cooling times of 300 seconds and 400 seconds, hot and low-temperature coolant were applied. When thelow-temperature coolant was applied, the measuring point of the roller shrank by 0.03 mm. However, when thehigh-temperature coolant was applied, the measuring point shrank by 0.3 mm. It was found that the application oflow-temperature coolant among coolants was more suitable for the reference dimension of the molded article comparedto the application of high-temperature coolant. Among the cooling water applied for the molding of plastic rollers, whenhigh-temperature coolant is applied, the shrinkage rate measured immediately after ejection was smaller than whenlow-temperature coolant is applied. However, it was found that post shrinkage, which occurs over time, occurs muchlarger when high-temperature coolant is applied.
참고문헌 (13)
- Seong-Ryeol Han, "Development of plastic passenger air bag(PAB)housing for replacing the steel PAB housing and reducing the automobile weight", Journal of the Brazilian Society of Mechanical Sciences and Engineering, 40(4), pp.1~10 (2018)
- Seong-Ryeol Han, "Numerical and experimental studies on injection compression molding process for thick plastic gas valve stem", International Journal of Advanced Manufacturing Technology, 89(1-4), pp.651~660 (2017)
- Ferenc Szabó, "Development of injection molding simulation algorithms that take into account segregation", Powder Technology, 389, pp.368~375 (2021)
- 곽태수, "초정밀 광학렌즈의 복굴절 예측과 금형 전사성", 한국정밀공학회지, 22(6), pp.55~60 (2005), 한국정밀공학회
- 최윤서, "Core in Core 냉각기술을 적용한 플라스틱 사출성형 특성에 관한 연구", 한국기계가공학회지, 18(3), pp.82~87 (2019), 한국기계가공학회[DOI]
- 이대수, "사출성형 열가소성 폴리우레탄의 물리적 성질에 미치는 금형 온도 영향", 엘라스토머 및 콤포지트, 39(4), pp.286~293 (2004), 한국고무학회
- 우정우, "투명 사출품에서 성형조건에 따른 복굴절 및 잔류응력의 분석", 폴리머, 40(2), pp.175~180 (2016), 한국고분자학회[DOI]
- József Bálint Renkó, "Comparison of cooling simulations of injection moulding tools created with cutting machining and additive manufacturing", Materials Today: Proceedings, 12(2), pp.462~469 (2019)
- Suping Shen, "Thermal and mechanical analysis for conformal cooling channel in plastic injection molding", Materials today: Proceedings, 28(2), pp.396~401 (2020)
- O. Rashid, "Mold cooling in thermoplastics injection molding : Effectiveness and energy efficiency", Journal of Cleaner Production, 264(10), pp.45~49 (2020)
- Singh S. Deepika, "Plastic injection molded door handle cooling time reduction investigation using conformal cooling channels", Materials Today:Proceedings, 27(1), pp.519~523 (2020)
- 이중현, "유한요소 해석을 통한 차량용 도어 래치 사출성형 공정조건 결정", 한국산학기술학회논문지, 17(10), pp.499~508 (2016), 한국산학기술학회[DOI]
- Bambang Waluyo Febriantoko, "Post Shrinkage Comparison of Plastic Injection Products by Using Solid Mold, Laminated Steel Tooling Mold, and Soft Tooling Mold", AIP Conf. Proc, 2114, pp.030009~ (2019)