Dynamics of a Moulding Cooling at Injection of Plastics

Abstract:

For a regulation of moulding cooling time course in a mould it is necessary to derive an equation of the mould temperature dependence on the moulding temperature as the equation of the regulation system. Amplitude, phase and transition characteristic are for R=1 and P=1 identical as for the action quantity. Amplitude, phase and transition characteristic of the action quantity and the control of the regulation circuit at use of the proportional regulator show that the circuit is stable a periodic. From the amplitude, phase and transition characteristic of the regulation circuit defect it is seen that the defect in the regulation circuit is relatively fast lowered. From the mentioned conclusions it is seen that the moulding cooling in the mould at injection of plastics with the proportional regulator introduces the regulation with relatively favourable regulation properties.

• Periodical: Key Engineering Materials (Volume 756)
• Pages: 149-154
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.756.149
• Online since: September 2017
• Authors: Juraj Ružbarský*
• Keywords: Dynamics, Moulding Cooling, Plastics

References

[1] E. Neuhäusl, Injection of plastics (Vstříkovaní plastických hmot), SNTL Praha, 1973 (in Czech).

[2] E. Ragan et al. Pressure die casting (Liatie kovov pod tlakom), 1st Ed., Prešov, VMV, 2007, 381 p. (in Slovak).

[3] J. Ružbarský and J. Žarnovský, Optimization of parameters in the compression moulding process of thermoset products, Advanced Materials Research 801 (2013) 61-66.

DOI: 10.4028/www.scientific.net/amr.801.61

[4] M. Müller, J. Ružbarský, P. Valášek and P. Hrabě, Compacting technologies of polyethyleneterephtalate bottle, Key Engineering Materials: Operation and Diagnostics of Machines and Production Systems Operational States 3. Vol. 669 (2016) 29-35.

DOI: 10.4028/www.scientific.net/kem.669.29

[5] E. Ragan, P. Baron and J. Dobransky, Sucking Machinery of Transport for Dosing Granulations of Plastics at Injection Molding, Advanced Materials Research 383-390 (2012) 2813-2818.

DOI: 10.4028/www.scientific.net/amr.383-390.2813

[6] T. Krenický, Implementation of Virtual Instrumentation for Machinery Monitoring, in: Scientific Papers: Operation and Diagnostics of Machines and Production Systems Operational States: Vol. 4, RAM-Verlag, Lüdenscheid, 2011, pp.5-8.

[7] T. Krenický and P. Jacko, Real-time monitoring of technical systems operation (Real-time monitoring prevádzky technických systémov), Strojárstvo Extra 5 (2011) 32/1-32/2. (in Slovak).

[8] J. Dobransky, R. Mikus, and J. Ruzbarsky, Comparison of Cooling Variants by Simulation Software, Advanced Materials Research 801 (2013) 75-80.

[9] J. Krebs and L. Bobčík, Thermopolastics in practice (Termoplasty v praxi), Verlay Dashofer Praha, 1999 (in Czech).

[10] P. Valášek, M. Müller and J. Ružbarský, Using Recycled Rubber Particles as Filler of Polymers, Applied Mechanics and Materials 616 (2014) 260-267.

DOI: 10.4028/www.scientific.net/amm.616.260

[11] E. Ragan et al., Injection and processing of plastics (Vstrekovanie a spracovanie plastických hmôt), 1st Ed., Prešov, FVT TU, 2008. (in Slovak).