CC BY
11INJECTION MOLDING OF INTELLECTUAL POLYMER MATERIALS
Ivitskyi 1.1., PhD
Ukraine, Kyiv
National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" DOI: https://doi.org/10.31435/rsglobal_ws/12072018/6041
ARTICLE INFO ABSTRACT
Received: 19 May 2018 Intrusion into the polymer composite products intelligent sensors allows
Accepted: 30 June 2018 for remote diagnostics and monitoring of these products directly during
Published: 12 July 2018 their operation. The article considers aspects of design of injection
- molding processing equipment. The designs of molds for introducing
KEYWORDS sensors into polymeric products were demonstrated.
intellectual materials; intellectual sensors; injection molding.
Citation: Ivitskyi I. I. (2018) Injection Molding of Intellectual Polymer Materials. World Science. 7(35), Vol.5. doi: 10.31435/rsglobal_ws/12072018/6041
Copyright: © 2018 Ivitskyi I. I. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Introduction. One of the types of polymeric materials is the materials that are capable of remote transmitting data on their properties for online monitoring. This is achieved by the introduction into polymer of intelligent sensors. They have the form of a structural totality of one or more measuring transformers of the magnitude that measured and controlled. Intelligent sensor produces an output signal suitable for the remote transmission, storage and usage in control systems, and possesses normalized characteristics [1, 2].
Research results. Injection molding machine performs of polymer melt injection in form until it is at a predetermined filling pressure. Thereafter intelligent sensor probe is introduced to a predetermined thickness and coordinate the product width is output probe from the mold cavity and the pressure is reduced to a predetermined value in the process and regulation is maintained a certain time, and then cooled without pressure, open form and the product removed (Fig. 1).
3 2 5 4 6 7
Fig. 1. Introduction of intelligent sensor by process of injection molding 1 - die; 2 - punch; 3 - cavity; 4 - pusher; 5 - nozzle; 6 - intelligent sensor; 7, 8, 11 - drives;
9 - pusher; 10 - gate valve
Form-forming elements in the form of a matrix and a punch move relative to each other (Fig. 2). Intelligent sensors, together with a mixture of polymer melt, are fed into the cavity of the loader. By means of a plunger of the injection mechanism, a mixture of the polymer melt together with the sensors is injected into the mold cavity.
The prepared portion of the polymer melt with a certain pressure is injected into the mold cavity. Further, the mixture of the polymer melt together with the embedded parts enters the working chamber of the injection mechanism plunger. At this moment, the pressure in the cavity is reduced.
The melt mixture of the polymer then passes through a check valve which prevents the main melt of the polymer from entering the mold cavity into the hole. The pressure in the forming cavity rises, so that the final pressing of the product takes place.
After a predetermined period of time, the mold is opened, the product is removed from the mold cavity, and the plunger is returned to its original position by the drive. Then the whole cycle repeats. Thus, a polymer product is formed with intelligent sensors that are located in a given volume zone without contact with its external surface.
2
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Fig. 2. Press form for manufacture of plastic details 1 - die; 2 - punch; 3 - cavity; 4 - nozzle; 5 - pusher: 6 - injection mechanism; 7 - loader; 8 - intelligent sensor; 9 - check valve; 10 - drive
Thanks to the use of this mold, insertion parts are provided, which can also be used as intelligent sensors, in any given area of plastic products
Intelligent sensors are usually inserted near the wall of processing equipment. In this regard, it is very important to consider wall effects in polymeric materials. A number of articles are devoted to the problems of wall effects [3-9]. The data obtained in these articles allows modeling the introduction of intelligent sensors taking into account wall effects. While ignoring the wall effects are possible fundamental errors in modeling.
Conclusions. The scope of the use of intelligent sensors in polymer composite materials is very wide. However, no technology and equipment for the automated dosing sensors in predetermined regions of polymer products during their manufacture [10-13].
The proposed methods and device for injection molding provide intelligent sensors in any given points of polymer products that will receive input signals from the sensors in real time.
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