Temperature of the molten plastic is an important factor to be controlled in injection moulding. The design of cooling system operating temperature of the injection moulding is affected by the following factors. Type of polymer used. Length of flow within the impression. Wall section of moulding length of the feed system. Number of impressions in
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Extruder is one of the most common processes used to create plastic components for further processing. Extruder machine is also similar to that of injection moulding machine. The process consists of feeding the powdered plastic from the hopper into the heated chamber. A rotating screw carries the material forward and forces it out through the heated
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Blow moulds are relatively simple in design and construction when the predominant blow moulded products are bottle and container. The blow moulding process are made of aluminum or other lightweight metal. It can be either machined or cast. Requires a high degree of cooling throughout the mould. It requires several vents at parting line and
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A standard mould for injection moulding is divided in two sides: cavity side and core side. A cavity side consists of sprue and runner system through which the plastic melted from nozzle enters into the mould. A core side consists of core, de moulding system and ejection system. Since this type of mould have one
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Engineering design is a complex process which involves interaction between many skills and discipline. In traditional design, the components are designed through mechanical, hydraulic or pneumatic components and principles. But in a mechatronics approach, mechanical, electronics, computer technology and control engineering principles are included to design a system. Figure shows the schematic of traditional and
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The mechatronics system design process consists of the following stages. Stage 1: Need for design The mechatronics system design process begins with a need. Needs are usually arise from dissatisfaction with an existing situation. Needs may come from inputs of operating or service personal or from a customer through sales or marketing representatives. They may
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However, the difference between PLC and PC certain characteristics as follows. The architecture of a PLC is basically the same as that of a general purpose computer. The application of PLC is for industrial environment with wide variation in atmosphere conditions and PLC is very rigid and compact. The PLC programming can be accomplished in
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The “brain” of the system which has three sub-parts. Central Processing Unit (CPU) (i) Microprocessor: Microprocessor caries out mathematic and logical operations. (ii) Memory: The area of the CPU in which data and information is stored and retrieved. It holds the system software and user program. (iii) Power supply: The electrical supply that converts Alternating
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Press is a metal forming machine tool used to shape or cut metal by applying force. Press working may be defined as a chipless manufacturing process by which various components are made from sheet metal. Many components in our day to day life are made by press working operations. Press working is mainly useful for
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Conventional machines are controlled by human operators. The machine control involves feed movements, positioning and sequencing etc. Due to repeated operations and environmental influences, there is an uncertainty in the quality and reliability of parts produced. A numerically controlled machines tool is the one that is controlled by numbers. The instructions are coded as a
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