Influence of Processing Parameters on Clamping Force During Injection Molding Process

Poszwa, Przemysław; Brzęk, Paweł; Gontarev, Ilya

doi:10.1007/978-3-030-16943-5_26

Cited by 2 publications

(3 citation statements)

References 9 publications

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“…All of the above studies were conducted to improve the yield of injection molded products by directly extracting the pressure signal inside the cavity and controlling the regulation. In 2019, Poszwa et al [17] proposed that in the injection molding process, clamping force is needed to keep the injection molding machine mold in the closed state, so the change in pressure in the cavity causes a corresponding change in clamping force in the injection molding machine. Therefore, based on the relationship between cavity pressure and clamping force changes in the injection molding process, we can extract the real-time clamping force change signal in the parallel molding process, which can be used to indirectly reflect the change in cavity pressure in the process.…”

Section: Literature Reviewmentioning

confidence: 99%

Intelligent Predicting of Product Quality of Injection Molding Recycled Materials Based on Tie-Bar Elongation

Chang

et al. 2022

Polymers

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In the process of injection molding, a certain percentage of recycled material is usually used in order to save costs. The material properties of recycled materials can change significantly compared with raw materials, and the quality of their molded products is more difficult to control. Therefore, it is crucial to propose a method that can effectively maintain the yield of the recycled material products. In addition, the variation of clamping force during the injection molding process can be determined by measuring the tie-bar elongation of the injection molding machine. Therefore, this study proposes a real-time product quality monitoring system based on the variation of clamping force during the injection molding process for the injection molding of recycled materials for plastic bottle caps. The variation of clamping force reflects the variation of cavity pressure during the injection molding process and further maps the variation of injection parameters during the injection molding process. Therefore, this study evaluates the reliability of the proposed method for three different injection parameters (residual position, metering end point and metering time). Experiments have shown that there is a strong correlation between the quality (geometric properties) and weight of the product under different molding parameters. Moreover, the three main injection parameters have a strong influence on the weight and quality of the plastic caps. The variation of the clamping force is also highly correlated with the weight of the plastic bottle cap. This demonstrates the feasibility of applying the variation of clamping force to monitor the quality of injection molded products. Furthermore, by integrating the clamping force variation index with the calibration model of the corresponding injection parameters, it is possible to control the weight of the plastic cap within the acceptable range of the product in successive production runs.

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Section: Literature Reviewmentioning

confidence: 99%

Intelligent Predicting of Product Quality of Injection Molding Recycled Materials Based on Tie-Bar Elongation

Chang

et al. 2022

Polymers

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“…Mold clamping force can reach several tons to dozens of tons, and even up to hundreds of tons for heavy TPIMM (Xu et al , 2021). Due to misoperation or mold manufacturing error, there is an inevitable deflection between the two molds during mold locking (Carpenter et al , 2006; Poszwa et al , 2019). When the deflection between the two molds occurs and under the action of large clamping force, great pitch moment or yaw moment will be generated (Carpenter et al , 2006; Poszwa et al , 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Due to misoperation or mold manufacturing error, there is an inevitable deflection between the two molds during mold locking (Carpenter et al , 2006; Poszwa et al , 2019). When the deflection between the two molds occurs and under the action of large clamping force, great pitch moment or yaw moment will be generated (Carpenter et al , 2006; Poszwa et al , 2019). The pitch moment or yaw moment is mostly borne by the supporting guideway, which requires the guideway to have the ability to resist the instantaneous impact of large load.…”

Section: Introductionmentioning

confidence: 99%

Static and dynamic characteristics of large-span six-slider closed hydrostatic guideway considering pitch moment and yaw moment

Zhang,

Lu,

Pan

et al. 2024

ILT

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Purpose The purpose of this study is to design a closed hydrostatic guideway has the ability to resist large-side load, pitch moments and yaw moments, has good stiffness and damping characteristics, and provides certain beneficial guidance for the design of large-span closed hydrostatic guideway on the basis of providing a large vertical load bearing capacity. Design/methodology/approach The Reynolds’ equation and flow continuity equation are solved simultaneously by the finite difference method, and the perturbation method and the finite disturbance method is used for calculating the dynamic characteristics. The static and dynamic characteristics, including recess pressure, flow of lubricating oil, carrying capacity, pitch moment, yaw moment, dynamic stiffness and damping, are comprehensively analyzed. Findings The designed closed hydrostatic guideway has the ability to resist large lateral load, pitch moment and yaw moment and has good stiffness and damping characteristics, on the basis of being able to provide large vertical carrying capacity, which can meet the application requirements of heavy two-plate injection molding machine (TPIMM). Originality/value This paper researches static and dynamic characteristics of a large-span six-slider closed hydrostatic guideway used in heavy TPIMM, emphatically considering pitch moment and yaw moment. Some useful guidance is given for the design of large-span closed hydrostatic guideway.

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Influence of Processing Parameters on Clamping Force During Injection Molding Process

Cited by 2 publications

References 9 publications

Intelligent Predicting of Product Quality of Injection Molding Recycled Materials Based on Tie-Bar Elongation

Intelligent Predicting of Product Quality of Injection Molding Recycled Materials Based on Tie-Bar Elongation

Static and dynamic characteristics of large-span six-slider closed hydrostatic guideway considering pitch moment and yaw moment

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