Thematische Bibliographien / Tire mould segment

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Auswahl der wissenschaftlichen Literatur zum Thema „Tire mould segment“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 11. Februar 2022

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Zeitschriftenartikel zum Thema "Tire mould segment"

Hnatkova, Eva, und Zdenek Dvorak. „Demoulding of Tires from Segmented Mould“. Applied Mechanics and Materials 827 (Februar 2016): 133–36. http://dx.doi.org/10.4028/www.scientific.net/amm.827.133.

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Segmented moulds are special tools intended for tires with a complex groove pattern and demoulding is the final stage in tire manufacturing process during which some damage on tire surface can occur. The aim of this work is to carry how the amount of segments will influence the stress generated during mould opening on the rubber surface, as well as investigation of opening force required for the segment radial moving based on segment angles. The obtained results showed that for proposed symmetrical design of tire and material properties, the generated stresses are negligible and all proposed solutions may be used. If we do not consider the economical part, the optimal segment angle is 23° and the number of segments is 11.

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Li, Xiao Bin, und Hai Ming Hu. „Finite Element Analysis of Turning Tire Active Mold Segment Using DEFORM-3D“. Key Engineering Materials 501 (Januar 2012): 418–21. http://dx.doi.org/10.4028/www.scientific.net/kem.501.418.

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By using DEFORM-3D to simulate the turing process of the tire active mold segment, the stress distribution, temperature distribution, strain distribution and cutting force transformation of turning tool and work-piece can be explored. The simulation results are helpful to configure the material and shape of the turning tools. Also the results play an important role in reducing development cost of the segment manufacturing technology and improving the accuracy and the lifetime of the mould segment.

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Hu, Hai Ming, Xiao Bin Li und Zhong Ke Tian. „The Wear Model Parameters Research of Cone Ring Sliding Plate on Tire Segmented Mould“. Key Engineering Materials 501 (Januar 2012): 427–30. http://dx.doi.org/10.4028/www.scientific.net/kem.501.427.

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This paper researched the mating surfaces between sliding plates on cone ring and segment holders and discussed vertical clearance between segments caused by wear. Relationships between wear depth and parameter a, b, c and wear coefficient K of Archard wear model were analyzed. This work laid a solid foundation for confirming these coefficients accurately in the future.

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Tian, Zhong Ke, Zi Hao Zhang, Hai Ming Hu und Xiao Bin Li. „Application Analysis of Radial Tire Mould Assembly Process“. Advanced Materials Research 221 (März 2011): 566–70. http://dx.doi.org/10.4028/www.scientific.net/amr.221.566.

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The segmented mould is key equipment for vulcanizing meridian tires. It can open and close along radial direction and results in the minimum deformation on tire shape. This article introduced the structure of inclined plane radial parting mold and illustrated assembly methods to every part of the radial parting mold in detail and problems should be noticed. At last, this article presented the pressure test contents of semi-steel and all-steel mould and pointed certain adjustment methods to unreasonable gaps in segmented mould.

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Chang, Chih-Yuan, und Wei-Ru Chen. „Influence of processing variables on quality of unsaturated polyester/E-glass fiber composites manufactured by double-bag progressive compression method“. Advances in Mechanical Engineering 10, Nr. 9 (September 2018): 168781401879853. http://dx.doi.org/10.1177/1687814018798531.

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A hybrid process of articulated resin transfer molding and vacuum-assisted resin infusion, called double-bag progressive compression method, has been invented to fabricate composite parts. In double-bag progressive compression method, the secondary bag is divided into several segments. During resin infusion, the double bag is drawn upward by vacuum, and the initial flow resistance offered by the loose preform is low. Once the resin infusion is completed, the vacuum on the segmented bags is progressively released to ambient pressure, and the segmental compression is sequentially performed until unnecessary resin is completely removed. This research is to experimentally investigate the influence of double-bag progressive compression method processing parameters, including vacuum pressure in the cavity, number of segments, initiating time of the next compression, temperature of the heated air, initiating segment of the heated air, initial height of the mold cavity, and excess infused resin, on the mechanical property of the part. The design of experiments adopts Taguchi’s method. Results show that the double-bag progressive compression method significantly reduces total filling time and maximally increases the flexural modulus of the part by 17.81% as compared with the typical vacuum-assisted resin infusion. A preferable parameter condition is proposed by taking both the flexural modulus and the operation complexity into account.

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Boxshall, Geoffrey A., und Rony Huys. „The ontogeny and phylogeny of copepod antennules“. Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 353, Nr. 1369 (29.05.1998): 765–86. http://dx.doi.org/10.1098/rstb.1998.0242.

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Comparative analysis of the development of antennulary segmentation and setation patterns across six orders of copepods revealed numerous common features. These features are combined to produce a hypothetical general model for antennulary development in the Copepoda as a whole. In this model most compound segments result from the failure of expression of articulations separating ancestral segments. In adult males, however, compound segments either side of the neocopepodan geniculation are typically formed by secondary fusion at the last moult from CoV (stage 5). The array of segments distal to the articulation separating segments XX and XXI is highly conserved both in ontogeny and phylogeny: typically the distal segmentation of the adult female is already present in the CoI. A maximum of three setae is added to the distal array during the entire copepodid phase. This morphological conservatism is interpreted as evidence of the functional continuity of the distal setal array as a mechanosensory system providing early warning of approaching predators. Sexual dimorphism typically appears late in development; the male undergoing modifications especially at the final moult to sexual maturity. These modifications include the formation of the neocopepodan geniculation at the XX to XXI articulation and, in some orders, the formation of a proximal geniculation at the XV to XVI articulation. A proximal geniculation is reported here from the Calanoida for the first time. The geniculations allow the male to grasp the female during any mate guarding and during spermatophore transfer. Particular setae on segments either side of the neocopepodan geniculation are modified as basally fused spines in at least some representatives of the Calanoida, Misophrioida, Cyclopoida, Harpacticoida and Siphonostomatoida. The antennulary chemosensory system, comprising primarily the aesthetascs, is enhanced at the final moult in many male copepods. In planktonic copepods this enhancement may take the form of a doubling of the aesthetascs on almost every antennulary segment, as in the eucalanid calanoids, or of an increase in size of existing aesthetascs, as in the siphonostomatoid Pontoeciella , or of the transformation of possibly originally bimodal, seta–like elements into distally thin–walled, more aesthetasc–like elements, as in some calanoids, harpacticoids and poecilostomatoids. Enhancement of the chemosensory capacity of adult males appears to be linked with their mate–locating role. Copepods inhabiting the open–pelagic water column are more likely to exhibit enhancement of the chemosensory system than neritic or benthic forms. Enhancement may confer a greater sensitivity to chemosensory signals, such as pheromones produced by receptive females, which may retain their directional information at lower concentrations and, therefore, for longer periods, in oceanic waters than in more turbulent neritic waters. Aesthetascs appear to be more evolutionarily labile than other setation elements, apparently being lost and regained within well–defined lineages. Caution is urged in the use of aesthetasc patterns in phylogenetic analysis. The ontogenetic analyses suggest that the timing of expression of intersegmental articulations during development may in future provide the most informative characters for phylogenetic study, rather than either segment numbers or the patterns of fused or undivided segments.

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TORRES, GUSTAVO RUBENS DE CASTRO, FLAVIA PAIVA COUTINHO, BIANCA GALÚCIO PEREIRA ARAÚJO, GIOVANNA PEREIRA DE ABREU und RUI SALES JÚNIOR. „THERMOTHERAPY AS A MICROBIAL CONTAMINANT-REDUCING AGENT IN MICROPROPAGATION OF BAMBOO“. Revista Caatinga 32, Nr. 3 (September 2019): 690–97. http://dx.doi.org/10.1590/1983-21252019v32n313rc.

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ABSTRACT The aim of the research was to evaluate the effectiveness of thermotherapy by humid heat of nodal segments to reduce the incidence of microbial contaminants in the introduction phase of the in vitro propagation of Bambusa vulgaris. Two independent experiments were carried out in a completely randomized design using a 4 × 2 factorial arrangement, four levels of temperature (25, 30, 40 and 50 °C) versus two treatment time intervals (5 or 10 min). Each treatment was composed of nine replications, corresponding to one single-nodal segment obtained from primary or secondary branches, in sucrose-free Murashige and Skoog medium with half the concentration of salts, supplemented with 6.5 g L-1 agar, 50 mg L-1 citric acid, 50 mg L-1 ascorbic acid, 200 mg L-1 chloramphenicol and 2 mg L-1 N6-benzylaminopurine. Isolation of prevalent mold fungi per repetition was conducted, and identification at genus level obtained from microcultures. The treatments corresponding to 50 °C for 5 or 10 min reduced significantly the fungal contamination that occurred at 11% and 0%, respectively, in nodal segments from primary branches, and 0% and 11%, respectively, in those from secondary ones. Fungi of genera Alternaria, Bipolaris and Curvularia were isolated from both types of segment, and Cladosporium from secondary branches only. The lowest percentages of mycelial growth detected in nodal segments submitted to both binomials demonstrated the effectiveness of the technique to reduce fungal contamination despite negative interference on sprouting.

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Hu, Hai Ming, De Bao Yin und Hui Li. „Forming Process of Segment-Narrow-Bars on the PCR Mold“. Key Engineering Materials 561 (Juli 2013): 270–73. http://dx.doi.org/10.4028/www.scientific.net/kem.561.270.

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The narrow bars on tire mold segment are used for molding the sipes on the tread, Its size is small.Its shape and location is diverse and process is complex. This article, through processing feasibility analysis of the narrow bars, combined with production practice, conducted a systematic and detailed explanations on the process of molding the narrow bars in the precision casting method for molding segment.Through analyse a number of empirical conclusions about narrow bars’ forming process which have drawn, and has proved the practicality of these methods through practice.

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Hopmann, C., und M. Schmitz. „Targeted Solidification through Self-optimising, Highly Segmented Mould Temperature Control in Injection Moulding“. International Polymer Science and Technology 44, Nr. 8 (August 2017): 1–8. http://dx.doi.org/10.1177/0307174x1704400801.

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The precision of manufactured parts is one of the most important quality criteria in mass production processes. While for mechanical machining processes high-precision parts can be achieved by using CNC techniques and high-precision machining, melt-based production processes still have large precision drawbacks, which can only be compensated by time-consuming mould trial iterations or post-processing. The following article discusses a new approach to incorporating a segmented temperature control system in an injection mould, leading to a processing technique which is capable of local adjustment of the part temperature. This segmented local temperature control, which is based on appropriate heating and cooling techniques and a novel control approach, is designed to have a positive effect on the solidification of the melt and shrinkage of the plastics part in order to achieve minimal part warpage. This process control is extremely demanding in terms of temperature control techniques, process measurements and control strategies, which are discussed below. Firstly, temperature control techniques that are able to deliver high performance and allow the most dynamic control of the part's surface temperature are discussed and evaluated. To control this process effectively, various sensors are analysed which are capable of measuring real part temperatures within the process runtime. Finally, the requirements for a control concept that allows efficient control of mould temperature are discussed, taking account of high dead times.

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Xu, Guangyu, Darrell R. Jackson, Karen G. Bemis und Peter A. Rona. „Time-series measurement of hydrothermal heat flux at the Grotto mound, Endeavour Segment, Juan de Fuca Ridge“. Earth and Planetary Science Letters 404 (Oktober 2014): 220–31. http://dx.doi.org/10.1016/j.epsl.2014.07.040.

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Dissertationen zum Thema "Tire mould segment"

Kvaššay, Adrián. „Konstrukce segmentu formy pro lisování pneumatik vyráběného technologií Selective Laser Melting“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-444402.

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This diploma thesis deals with development and design modifications of tire mould segment which will be batch produced by additive technology Selective Laser Melting. Material for its production is maraging steel 1.2709. Lattice structure was used inside the segment construction. The geometry of the lattice cell was chose based on two main factors – eliminating production costs and providing sufficient stiffness. Strength of the segment was calculated by FEM. The functional sample was made and its distortion was analyzed by optical digitalization.

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Konferenzberichte zum Thema "Tire mould segment"

Yi-Chih Liu und Sheng-De Wang. „An algorithm to segment the ventless tire mold“. In 2009 Asia-Pacific Conference on Computational Intelligence and Industrial Applications (PACIIA 2009). IEEE, 2009. http://dx.doi.org/10.1109/paciia.2009.5406485.

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Tang, Yue, Long Cui und Qiang Li. „Parameters Optimization Design and Analysis of Bow-shape Seat in Segmented Tire Mould Structure“. In 2015 International Conference on Intelligent Systems Research and Mechatronics Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/isrme-15.2015.326.

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Nalla, Ajit R., und James L. Glancey. „Closed Loop Control of Resin Flow in VARTM Using a Multi-Segment Injection Line and Real-Time Adaptive, Model-Based Control“. In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81767.

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To improve process controllability during VARTM, a new resin injection line was designed and tested. The injection line, which consists of multiple segments each independently operated, allows for the control of resin flow to different locations within the mold. Simulation of different injection line configurations for various mold geometries is studied. Performance of a prototype line is quantified with a laboratory size mold used to demonstrate the potential value and benefits of this approach. Specific performance metrics, including resin flow front controllability, total injection time and void formation are used to compare this new approach to conventional VARTM injection methods. Computer-based closed loop controller strategies are designed that use point sensor feedback of resin location. In addition, an adaptive control algorithm that uses a finite element model to provide real-time updates of the injection line configuration is presented. Experimental validation of two different control strategies is presented, and demonstrates that real-time, model-based control is possible in VARTM.

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Irani, Rohinton K., Srinivas Kodiyalam und David O. Kazmer. „Runner System Balancing for Injection Molds Using Approximation Concepts and Numerical Optimization“. In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0129.

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Abstract The goal during runner balancing is to vary the diameters of the runner segments such that all the cavities, in a multi-cavity injection mold, fill at the same time. If the runner system is unbalanced, some cavities will fill before others, begin to overpack, and result in material wastage and inconsistent part quality. Numerical optimization methods and finite element mold-filling simulation are used to solve this nonlinear discrete variable problem. Approximation concepts are used to reduce the computational effort required for solving this iterative problem. This automated system has been successfully tested on a number of family molds.

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Gonzalez, David, Jose Garcia und Brittany Newell. „3D Printed Segmented Flexible Pneumatic Actuator“. In ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/smasis2019-5645.

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Abstract Soft actuators have been studied and analyzed as a new solution for soft robotic technologies. These types of actuators have many advantages due to their predictable deformations and their ease of control, enabling them to hold and move delicate objects performing complex movements in confined spaces. Soft actuators can be made using different manufacturing processes, but the most common is mold casting. However, this manufacturing process involves several steps, increasing the manufacturing time and hindering changes in the design. This paper presents a novel design of a 3D printed soft pneumatic actuator based on additive manufacturing, achieving design versatility and performance. The produced actuator has seven that can be individually controlled. The actuators were made using fused deposition modeling (FDM) technology in one continuous process and without support material. The mechanical performance of the soft actuators was demonstrated, analyzing the deformation in the z-axis based on input pressure.

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Lee, Alexander, James Brink, David Anderson und Karthik Ramani. „WirePATH Rapid Tooling Process and Supporting Software Development“. In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/dac-48723.

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Recent developments in Computer Aided Design (CAD) have drastically reduced overall design cycle time and cost. In this paper, wirePATH, a new method for rapid direct tooling, is presented. By using specialized interactive segmentation computer software and wire electrical discharge machining (wire EDM), wirePATH can reduce manufacturing time and cost for injection molds, casting patterns, and dies. Compared to other conventional-mold making methods, wirePATH can reduce fabrication time by as much as 40 to 70%. Wirepath can use a combination of wire EDM and other processes. Our method provides a new means to produce a greater variety in products by changing only portions of the tooling. Segments allow a part of a mold to be replaced to accommodate design changes and repair. WirePATH enables new applications of wire EDM to more complex shapes by bridging the gaps between CAD, our method, wire EDM and conventional manufacturing processes.

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Ghosh, Kalyanjit, und Srinivas Garimella. „Dynamic Modeling of Thermal Processes in Rotational Molding“. In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56801.

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Transient heat transfer phenomena in the rotational molding of plastic parts are modeled in this study. Natural convection and radiation from the furnace and flue gases to the mold housing are analyzed. Other models include transient heat transfer through the mold, single-phase conduction through the particulate plastic material prior to phase change, melting of the plastic, and heating of the liquid pool. Subsequent staged cooling and solidification of the mold and plastic using a combination of free and forced convection and radiation is also modeled. Information about the properties of the plastic in powder, liquid and solid forms is obtained from the literature. Assumptions about the behavior of the plastic powder and the molten plastic during the rotational operations are also made in accordance with the available literature. The mold wall, melt and solidified plastic regions are divided into a number of finite segments to track the temperature variation with time during the molding process. The corresponding variations in masses and thicknesses of the melt and solidified plastic regions are also estimated. Consequently, the energy consumption rates in the process are estimated. The model is applied to a specific molding process in a commercial rotational molding plant. Parametric studies of the effect of heating and cooling durations on the plastic temperatures and the energy consumption rates are also conducted. These analyses provide insights about opportunities for optimization of the heating and cooling schedules to reduce overall energy consumption and also improve throughput.

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Yueh, Yuh-Shan, und R. Allen Miller. „A Systematic Approach to Support Design for Manufacturability in Injection Molding and Die Casting“. In ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium collocated with the ASME 1995 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/cie1995-0804.

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Abstract In designing a part to be produced by injection molding or die casting, designers need to consider manufacturing characteristics of the part such as filling and ejectability from the dies as well as functional issues. The typical design cycle is iterative, laborious and time-consuming. In this paper, we present a procedure for defining parting information (locations where the mold/die come together), and recognizing the links between part design and die/mold construction. Many decisions and design details, such as draft on surfaces parallel to the draw (die opening) direction, gate and runner locations, vent locations, etc., depend on the parting locations and characteristics. Parting information is normally not part of the geometric model of the part design. Parting design, including draw direction and parting location, is addressed through a custom user interface which contains several options related to different levels of geometric modeling data. The resulting specification is stored in a segment structure which provides a flexible parting description and fits within the B-rep hierarchy. The reasoning about the linking of related surfaces is accomplished by splitting and traversing the extracted geometric entities based on parting definition. The entities covered by the same die/mold component are aggregated as a face group which is a set of complete or partial surfaces with the parting definition as the boundary information and with the draw direction as the moving information. In this approach, manufacturing information can be strongly coupled with geometric data to form a complete part model which supports manufacturability assessment and facilitates any necessary shape transformations to achieve a manufacturable part in a straightforward manner so that design iterations can be controlled and development cost can be reduced.

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