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 Computational study on the clamping mechanism in the injection molding machine
Tác giả hoặc Nhóm tác giả: Van-Duong Le, Van-Thanh Hoang, Quang-Bang Tao, Lahouari Benabou, Ngoc-Hai Tran, Duc-Binh Luu & Jang Min Park
Nơi đăng: The International Journal of Advanced Manufacturing Technology; Số: 2022;Từ->đến trang: .. - ..;Năm: 2022
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
ABSTRACT
The clamping mechanism plays an important role in obtaining high-quality products of the injection molding process. The clamping mechanism of the fve-point double-toggle has been widely used for the high-speed plastics injection molding machine. The purpose of this paper is to optimize the fve-point double-toggle clamping mechanism through multi-body dynamics analysis. This work also provides guidelines and a clear understanding for designing the clamping system in an injection molding machine with various clamping forces. The theoretical calculation has been handled frst and then the computational model has been verifed in this study. In addition, the efects of clamping forces on the main dimensions, including movable-fxed plate thickness, tie-bar diameter, and average link cross-section have been investigated theoretically and numerically. The results show that the optimal design allows reaching a high force amplifed ratio and that the obtained
mechanism has good kinematic performance and works steadily with lower energy consumption and lower cost than the
preliminary design. Moreover, the relationships between the parameters such as the critical angles of the double-toggle
clamping mechanism, the ratio of force amplifcation, and the stroke of movable mold have been found in this work. The
optimized parameters will yield useful knowledge to design and manufacture the clamping mechanism of the microinjection
molding machine in practice.
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