scholarly journals Production injection moulds with additive technology by the HP MJF 4200 printer

2021 ◽  
Vol 1199 (1) ◽  
pp. 012072
Author(s):  
Z Chval ◽  
K Raz ◽  
M Stepanek
Keyword(s):  
Cost Reduction ◽  
Injection Moulding ◽  
Universal Design ◽  
Plastic Material ◽  
Additive Technologies ◽  
Thermal Resistivity ◽  
Fusion Technology ◽  
Additive Technology ◽  
Cooling Channels ◽  
Plastic Parts

Abstract This paper is focused on the production plastic parts. It is describing two technologies-injection moulding and additive technology. The production process of the metal mould for the new parts takes about ten weeks. It is necessary to make some reductions after the mould is produced. It is increasing the time which is necessary for the prototype of products. This time (from the initial design of mould to the prototype of product) can take about six months. Additive technologies can be used for decreasing this time and for cost reduction. Moulds produced by the additive technology are mostly special inserts which can be implemented in the universal design of mould. It is also possible to produce whole moulds from plastic material. These moulds can have integrated cooling channels. There are high demands on the material of the mould with respect to the thermal resistivity, toughness and surface quality. There are really often used SLA technologies, which are considering the High Temp Resin and Material Jetting Digital ABS. Other options used in the factories are Somos PerFORM and Digital ABS Plus. This paper deals with the possibility of usage of the HP Jet Fusion technology with the material PA12 GB for the production of mould inserts and it is evaluating this process and repeatability of process.

scholarly journals Additive Technology Parts and their Material Properties

2019 ◽  
Vol 16 (1) ◽  
pp. 58-61
Author(s):  
Juraj Beniak ◽  
Miloš Matúš ◽  
Peter Križan ◽  
Michal Holdy
Keyword(s):  
Fused Deposition Modeling ◽  
Plastic Material ◽  
Acrylonitrile Butadiene Styrene ◽  
Additive Technology ◽  
Modeling Technology ◽  
Fused Deposition ◽  
Steel Material ◽  
Plastic Materials ◽  
Wide Range ◽  
Plastic Parts

Abstract Additive technology uses a wide range of materials. Beginning from plastic material, different types of resin but also steel material. Presented paper deals with Fused Deposition Modeling technology which is focused to processing of plastic materials based on polymers. Mostly used are ABS plastic (Acrylonitrile Butadiene Styrene), Nylon, Polycarbonate (PC), or composites based on different polymers. New devices designed for the production of plastic parts are able to work also with environmentally friendly and biodegradable materials as Polylactic acid (PLA). The aim of this paper is to show the possibility of using materials based on organic polymers whose properties are comparable to conventionally used polymers. Presented are measured and statistically evaluated data related to basic properties of PLA material.

scholarly journals A New Conformal Cooling System for Plastic Collimators Based on the Use of Complex Geometries and Optimization of Temperature Profiles

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2744
Author(s):  
Jorge Manuel Mercado-Colmenero ◽  
Abelardo Torres-Alba ◽  
Javier Catalan-Requena ◽  
Cristina Martin-Doñate
Keyword(s):  
Thermal Performance ◽  
Cycle Time ◽  
Cooling System ◽  
Plastic Material ◽  
Dynamic Performance ◽  
Conformal Cooling ◽  
Cooling Channels ◽  
Optical Part ◽  
Part Surface ◽  
Plastic Parts

The paper presents a new design of conformal cooling channels, for application in collimator-type optical plastic parts. The conformal channels that are presented exceed the thermal and dynamic performance of traditional and standard conformal channels, since they implement new sections of complex topology, capable of meeting the high geometric and functional specifications of the optical part, as well as the technological requirements of the additive manufacturing of the mold cavities. In order to evaluate the improvement and efficiency of the thermal performance of the solution presented, a transient numerical analysis of the cooling phase has been carried out, comparing the traditional cooling with the new geometry that is proposed. The evolution of the temperature profile versus the thickness of the part in the collimating core with greater thickness and temperature, has been evaluated in a transient mode. The analysis of the thermal profiles, the calculation of the integral mean ejection temperature at each time of the transient analysis, and the use of the Fourier formula, show great improvement in the cycle time in comparison with the traditional cooling. The application of the new conformal design reduces the manufacturing cycle time of the collimator part by 10 s, with this value being 13% of the total manufacturing cycle of the plastic part. As a further improvement, the use of the new cooling system reduces the amount of thickness in the collimator core, which is above the ejection temperature of the plastic material. The improvement in the thermal performance of the design of the parametric cooling channels that are presented not only has a significant reduction in the cycle time, but also improves the uniformity in the temperature map of the collimating part surface, the displacement field, and the stresses that are associated with the temperature gradient on the surface of the optical part.

A Method for Predicting the Behavior of Plastics at Different Temperatures

2014 ◽  
Vol 1039 ◽  
pp. 107-111
Author(s):  
Yang Chen ◽  
Gui Qin Li ◽  
Bin Ruan ◽  
Xiao Yuan ◽  
Hong Bo Li
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Constitutive Model ◽  
Research And Development ◽  
Mechanical Behavior ◽  
Plastic Material ◽  
Different Temperatures ◽  
Plastic Parts

The mechanical behavior of plastic material is dramatically sensitive to temperature. An method is proposed to predict the mechanical behavior of plastics for cars, ranging from low-temperature low temperature ≤-40°C to high temperature ≥80°C. It dominates the behavior of plastic material based on improved constitutive model in which the parameters adjusted by a series of tests under different temperatures. The method is validated with test and establishes the basis for research and development of plastic parts for automobile as well.

scholarly journals 3D print additive technology as a form of textile material substitute in clothing design – interdisciplinary approach in designing corsets and fashion accessories

2018 ◽  
Vol 69 (03) ◽  
pp. 190-196 ◽  
Author(s):  
KONČIĆ JASMINKA ◽  
ŠČAPEC JOSIPA
Keyword(s):  
Contemporary Art ◽  
Interdisciplinary Approach ◽  
Additive Technologies ◽  
Textile Material ◽  
Fashion Design ◽  
Additive Technology ◽  
3D Print ◽  
Clothing Design ◽  
Design Options ◽  
Interdisciplinary Process

This research paper enquires into the application of 3D print additive technology in fashion design. The research aims to find the design options for garments by substituting the textile material with new technological solutions. The focus of the paper is the interdisciplinary research of innovative corset and fashion accessories designs made using 3D print additive technologies. The main focus of the work is the interdisciplinary process of creating clothes ranging from preliminary sketches to prototypes within three different areas: contemporary art, fashion design and additive technology.

A brief history of the filling simulation of injection moulding

2008 ◽  
Vol 223 (3) ◽  
pp. 711-721 ◽  
Author(s):  
D Cardozo
Keyword(s):  
Computer Simulation ◽  
Injection Moulding ◽  
Three Dimensional ◽  
History Of ◽  
Dimensional Models ◽  
Three Dimensional Models ◽  
Set Up ◽  
Filling Simulation ◽  
Basic Features ◽  
Plastic Parts

Injection moulding is one of the most important manufacturing processes for mass production of complex plastic parts. The quality of injection moulded parts depends not only on the material, shape, and function of the part design, but also on how the material is processed during moulding. Traditional design approaches based on intuition, prior experience, and trial-and-error methodology have been becoming less efficient and effective. With advances in numerical modelling and computer simulation techniques, there have been tremendous efforts made to develop computer simulation tools to facilitate injection moulding design and process set-up. This paper reviews the history of research and development in the filling simulation of injection moulding. The existing models are classified into three categories: one-dimensional models, 2.5D models, and three-dimensional models. The basic features and relative key techniques about these models have been discussed. The techniques of tacking the moving flow front have also been presented. It is then followed by conclusions and discussions of these mentioned models.

OPTIMASI PRODUKSI TUTUP BOTOL 500 ml PADA PROSES INJECTION MOULDING MENGGUNAKAN METODE RESPONSE SURFACE

ROTOR ◽  
2017 ◽  
Vol 10 (1) ◽  
pp. 36
Author(s):  
Kurniawan Purnama Putra ◽  
R. Koekoeh R. W.
Keyword(s):  
Injection Molding ◽  
Response Surface ◽  
Cycle Time ◽  
Injection Moulding ◽  
Plastic Material ◽  
Cooling Time ◽  
Mathematical Methods ◽  
Nozzle Temperature ◽  
Pressure Nozzle ◽  
Plastic Pellets

Injection molding is one of the most common operations and versatile for mass production of complex plastic components. Injection molding is a process of plastic forming into a desired shape by means of pressing molten plastic into a space (cavity). Injection molding has a multi-step process, starting from inserting plastic pellets into the hopper, then plastic pellets into barrels / heating which makes the plastic material is melted. Melting plastic material is driven by the rotation of the screw, so that the flow to the nozzle, and then toward the sprue, runner, gate and into the cavity. Then the material present in the cavity will be retained within the mold under a certain pressure (holding pressure) to keep no shringkage when the product cooling process (cooling).The purpose of this study was to obtain the optimization of the cycle time and the percentage of production reject the bottle cap 500 ml in PT Berlina Tbk. The method used for this research is the method of response surface analysis, method surface respone is statistical and mathematical methods used to examine the relationship between one or more variables with the qualitative form of the response variables that aims to optimize and develop the response in an experiment. The data is optimized using Minitab software 16 produces an output response parameter setting optimization to inject pressure, nozzle temperature and cooling time. From the data analysis using the software Minitab 16 is obtained from the optimum situation results generated under conditions injection amounting to 1420 bar pressure; nozzle temperature at 264.7912 ° C; and the cooling time of 14.08 seconds. In this state of production can be increased by 10.836%. From the state of the optimum cycle time generated is 27.9161 seconds, net produced according to the standard that is 33.5820 grams and reject percentage the resulting is 11.11%. With a cycle time 27.9161 seconds with a net according to the standard and the percentage of rejects decreased 3.89%, the resulting product amounts to ± 15,517 /shift or up approximately 10.836%. The amount is based on the number of products produced in the cycle time previous of 30 seconds to produce ± 14,000 /shift. Keywords: Injection moulding, box-benhken design, Response surface methodology

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