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Design of manufacturing technology for plastic terminal device
Adamiec, Pavel ; Žák, Ladislav (referee) ; Kandus, Bohumil (advisor)
The master thesis deals with design to produce terminal using the plastic injection molding. In the first part are theoretical information about injection molding and injection molding with inserts. The second part is a concrete design of production terminal which contains: injection mold design, calculation of the injection parameters, machine selection, technical and economic evaluation of production. Terminal is made of polyamide 66, inserts material is brass. Parts of injection mold assembly are selected from Hasco standards. The main parts of assembly are made of 1.2312 steel. Production cycle is placed on injection machine Allrounder 375 V from Arburg.
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Production technology of plastic unit base
Vyškovský, Stanislav ; Kebrle, Ondřej (referee) ; Kandus, Bohumil (advisor)
Thermoplastic injection technology is widely used in all sectors of consumer electronics and automotive industry. The biggest advantage of this manufacturing technology is a high degree of automatization and good reproducibility of the manufacturing process. Another advantage is the possibility of recycling of the gating scrap and defective products. The main task of this work is to calculate the necessary parameters for the injection process, which takes place at the designed injection form. Next part is technical design which includes choice of standard parts of injection mold and idividual semi-finished parts for mold. Thesis continues with selecting the type of injection press based on calculated parameters of the injection process. Thesis is finished by technical-economic evaluation.
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Design of manufacturing technology for motorcycle headlamp body
Nosek, Jan ; Urbanec, Antonín (referee) ; Kandus, Bohumil (advisor)
The thesis is a proposal technology of the main body of motorcycle polymer material from Bayer's APEC - high temperature polycarbonate 1703. Literary study summarizes findings from a thermoplastic injection molding technology and the possibilities of structural design of injection molds, plastic plating technology from a focus on the most important technology in the field of lighting technology vehicles. Given the anticipated production run of 50 thousand. pieces are assessed a total of 2 variants of the molding parts. The practical part was modeled and specified product designed mold. Construction was done by using SolidWorks 2007 software and normalities FCPK Bytów and HASCO. For the selected option is implemented technological calculations. For the proposed technology was chosen Allrounder injection molding machine 570 A the manufacturer Arburg designed and suitable technological process of production.
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Buckling Analysis of Thermoplastic Pipes
Procházka, Martin ; Kytýr, Jiří (referee) ; Gratza, Roman (advisor)
This thesis deals with buckling analysis of thermoplastic pipes. An experiment was conducted in which the pipes were encumbered in axis. During this experiment, the loading force was monitored and measured at the material stability loss. For these measurements, polyethylene, polypropylene and polyvinylchloride pipes were used. Afterwards, the static and buckling analysis of pipe models were made in the ANSYS programme. The models were created on the basis of the experiment results. The outcomes of the analysis were compared with figures of the theoretical calculations. In the ANSYS programme pipes were strained by external overpressure.
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Laser welding of plastics
Nováková, Eliška ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
The bachelor presents a brief characteristics of thermoplastics welding methods followed by a more detailed description of laser welding of thermoplastics, i.e. laser description, division and types. Then, conditions and parameters of welding are defined. The experimental part is focused namely on visual welding tests on a test sample. The sample consists of two types of material – pure polymethyl methacrylate and black polycarbonate – which are used in car headlamp production. For welding, a diode laser designed for thermoplastics welding was used. The main target of inspection were flaws that were visible on macroscopically enlarged images. The tested welds mostly showed porosity and air bubbles. Finally, an evaluation of the experiment is conducted.
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Analysis of Thermoplastic Welded Joints
Procházka, Martin ; Kytýr, Jiří (referee) ; Gratza, Roman (advisor)
This thesis deals with analyses of thermoplastic welded joints. Experiments were performed, in which the not-welded specimens and specimens with cruciform welded joints were tested by tensile and three-point bending test. For these measurements, polypropylene and polyethylene specimens were used. Afterwards, the analyses of specimen models were made in the ANSYS programme. The results of the analyses were compared with figures of the analytic calculations and measurements.
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Injection moulding
Heralt, Aleš ; Balej, Zdeněk (referee) ; Žák, Ladislav (advisor)
This Bachelor´s thesis is focused on construction forms for injection of thermoplastic matters. The technology for plastic products production is technology that participate more and more in production of all sorts of products - from technical components over kitchenware after as much as toys. Main part of this thesis is focused on description of the injection valve, ejector, annealing and ventilation system forms for injection with the main structural principles.
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Filament recycler for FDM 3D printers
Neuwirth, Karel ; Bayer, Robert (referee) ; Jaššo, Kamil (advisor)
The first part of the project is focused on various types of 3D printing technology, especially FDM technology, where is possibility of recycling printed material. Next is a description of the most used materials for printing by FMD technology and a description of the production of filament using screw extruders. Several devices were selected for recycling and production of filament from FDM printing, for which their technological procedure in recycling is described. Subsequently, the work deals with the design of a device for melting plastic using a screw extruding device, including the possibility of measuring and regulating the output. In the last part, according to the design, the device is assembled and tested.
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Optimization of wall thickness for headlamp body
Prokeš, Radim ; Tomaj, Martin (referee) ; Kandus, Bohumil (advisor)
This project is concerned with the issue of the thickness optimalization of the wall thickness of the plascics headlamp housing by the simulation Moldflow analyse. There are mentioned the basic information about the plastic materials and their dividing over there. Furthermore the description of the injection process, the injection machines and the tools is included. The principles of the proposal and the construction of the plastics part is also mentioned here. In the application of the Moldflow Plastics Insight 6.0 there is provided the simulation of the melt moldflow for the proposed headlamp housing. Based on this analyse the proposal of the thickness reduction of the wall thickness of the headlamp housing is worked out with the aspect on the required qualities. It also contains the technoeconomic estimation of the benefit optimalization.
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