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vertical injection molding machine to improve test

time:2017-08-16 11:58:38 From: Alina

 vertical injection molding machine to improve test

  The improved system of two throttle maximum flow down to 0.1L / min, at this time the ejection lever velocity of 0.15m / s, indicating that the flow rate by adjusting the throttle valve to control the movement of the hydraulic cylinder speed. The maximum flow rate is adjusted to a throttle of 0.7L / min, the right of the solenoid valve 2 after power failure, the movement speed of the ejection lever is about 0.092m / s. Because of the relative energy loss is slightly above normal after a single valve solenoid valve in parallel, so the speed of a single valve using the improved relative improvement before slow 0.008m / s. The above results can be seen: the control solenoid valve through power outages, improved system can achieve two speed, and by adjusting the throttle valve can be controlled to achieve the speed of the hydraulic cylinder.
3 vertical injection molding machine to improve test
         Improvement of vertical injection molding machine, test verification by injection 500mL bottles preforms. Materials used PET plastic bottle outside diameter 200-0.35mm, bottom SR10mm, wall thickness of 3mm, preforms high 90mm. Hot runner mold structure, automatic ejection structure, injection pressure a mold cavity 12 40 ~ 50MPa.
         In order to ensure that the product is not damaged stripping, stripping at the top of the speed of the product to be slow, but when you can accelerate the speed of the product from the mold, putting the speed of return can be accelerated. However, the ejection mechanism generally vertical injection molding machine using only one set of hydraulic neutron circuit, when the speed of the product from the mold after or the same, the speed of the return is also constant.
         Two sets of hydraulic oil passage of neutrons will now be parallel with the front oil passage demold time when compared to the unmodified work simultaneously two groups of passage. Slow at the top of the product using a set of hydraulic oil, when the product from the mold, the oil began to work in parallel to achieve rapid movement, when the oil return line is also used in parallel to achieve rewind.
3.2 two cylinder deformation amount
         In the ANSYS environment modeling, elastic modulus is set to 2.6 × 1011, Poisson's ratio is set to 0.3, D1 = 0.38mm; DW1 = 0.47mm, on the model meshing constraint imposed on the whole cylinder ends in applying the internal cylinder p = 1.25 × 1.7313 × 42 × 106N / m2 uniform pressure load.
4. Conclusion
         MATLAB is applied to the design of large-bore column work, the work is summarized as follows: (1) describes the structural characteristics of large-bore column and application principles covering hydraulic holder; and (2) analysis of the double telescopic columns, etc. under load, the working pressure of the piston chamber characteristics determine the cylinder operating pressure and the use of high flow valve theoretical basis; (3) the use of MATLAB programming, variable parameters checking cylinder pressure and burst pressure limit is calculated process; (4) application of ANSYS on the cylinder tube deformation of the finite element analysis. The method described in this paper can be used for the entire process of complex product design.

 plastics injection molding machine industry 

Alina

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