|
|
Technology of injection molding of thermoplastic test specimens
Khamzin, Yersin ; Petruš, Josef (referee) ; Kučera, František (advisor)
The diploma thesis focuses on the optimization of technological parameters of plastic injection molding and the study of the influence of technological parameters on the quality of molded test specimens’ type 1A. The quality of molded parts for 3 types of polypropylene (PP) with different melt flow rate (Mosten GB 002, Mosten GB 218, Mosten MA 230) and 1 type of polystyrene (PS) (Krasten PS GP 154) was evaluated in terms of dimensional stability and weight. The contribution of software for modeling the plastic injection molding process was evaluated in this work. SOLIDWORKS Plastics software was used to optimize technological parameters. The construction of the bodies, mold and cooling system was constructed, and test bodies were produced on the basis of parameters obtained from the simulation of the injection molding process. Their quality parameters were compared with a 3D model and for each of the studied materials the optimal technological parameters were selected in terms of quality and the degree of influence of individual injection parameters on the quality of moldings was evaluated. The accordance of the results of the theoretical simulation with the real experiment was proved and a computational module independent of the optimized quality parameters, generally suitable for optimizing the quality parameters of the injected parts, was developed.
|
|
|
Design of injection mold production technology for precision casting
Fendrich, Tomáš ; Polzer, Aleš (referee) ; Zlámal, Tomáš (advisor)
The diploma thesis deals with the design and production of an aluminum injection mold for investment casting. The work briefly describes the technology of investment casting together with a description of the types of molds, their internal arrangement and the most commonly used materials. Another part of the work is devoted to the analysis of aluminum molds machining. Emphasis was placed mainly on those operations, that will be used in production of mold. The practical part describes in detail the process of designing the model and mold, as well as the process of designing production technology. The construction is performed using the program SolidWorks, production technology using the program SolidCam. At the end of the work, the mold is assembled and the functionality of the mold is verified by means of test injection and economic evaluation is made.
|
|
|
Production of corner cover
Hrdina, Vojtěch ; Ohnišťová, Petra (referee) ; Žák, Ladislav (advisor)
The project elaborated design of injection mould for production of corner cover, which serves to protect a reprobox from mechanical damage. The production possibilities were considered at the beginning. The injection molding technology was chosen from available technologies. The first part of the thesis is theoretic, plastics and injection molding are investigated. The choice of suitable polymer and the entire draft of mold is in the second part of thesis. The final mold is two-cavity with cold runner system. The technical and economic assessment of the proposal is carried out in the last part of thesis.
|
|
|
Production of HTHT32 / 40 GI Double Elbow
Kříbala, Milan ; Kandus, Bohumil (referee) ; Žák, Ladislav (advisor)
The diploma thesis deals with the design of an injection mold for manufacturing double elbow, which finds its use in the siphon assembly. The part will be made of polypropylene with the trade name Tatren HT 25 11. The production batch size is set at 100,000 units in 3 months. Firstly, the analysis of the part is done including a detailed specification of its function and criteria that must be met by the component. Furthermore, a suitable technology for the production of the part is chosen. The theory of injection molding and mold design is made on the basis of the chosen injection technology. Subsequently, in the practical part is made a complete design of injection mold including technological calculations and simulations. An injection molding machine is chosen for the proposed injection mold. The conclusion of the thesis consists of technical - economic evaluation of the production of double elbow.
|
|
|
Optimization of the vacuum deaeration of the injection mold
Rohlínková, Marie ; Kebrle, Ondřej (referee) ; Kandus, Bohumil (advisor)
The project elaborated design of optimization venting of molds exhibiting bubbles or low quality weld lines. Based on a literature study of the injection mold venting, the use of vacuum venting, namely the VACUUMJET system of the Spanish CUMSA manufacturer, has been proposed. The experiments proved the elimination of bubbles in the part and the marked improvement of visual quality of the weld lines. The effect on the closing force was not confirmed. The use of the system is more economical for larger batches production, or when high quality parts are required that allow price increasing.
|
|
|
The design and manufacturing process of an injection mold
Stančík, Jan ; Dvořák, Jaromír (referee) ; Kalivoda, Milan (advisor)
Bachelor thesis deals with the topic of plastics injection. Firstly, it deals with the design process of the injection mold, which starts with the design of the injection molding product, with the design of the gating system and depending on the suitable forming of the core and cavity and suitable placement of the ejecting elements. After designing the injection mold design, the work is focused on the TPV documentation for the selected part of the mold assembly. Here are solved technological parameters and machining operations, assignment of machines and tools. In the last part of the thesis, an injection machine is selected depending on the calculations. Finally, an economic assessment is made on injection molding and discussion.
|
|
|
Production of injection molded parts
Kratina, Patrik ; Kandus, Bohumil (referee) ; Žák, Ladislav (advisor)
The work, elaborated within B-STG Engineering Bachelor´s degree program, is focused on the topic of injection molding into molds. In the introductory part, the work deals with materials suitable for injection. In the next chapter, the work is focused on the process of injection and description of individual parts and components of the injection machine and its tools. The thesis contains the concept of the technology of production ( injection moulding into metal molds) and its design solution. The conclusion of the thesis includes economic evaluation, attachment and drawing documentation.
|
|
|
Analysis and production of a part from an injection mold
Dudek, Ladislav ; Mouralová, Kateřina (referee) ; Kalivoda, Milan (advisor)
The aim of the thesis was to make a 3D model of the injection mold for injection moulding machine, to determine the production process and to evaluate the technical and economic aspects. The first part describes the input parameters, which need to be clarified and determined before the construction of the tool. In the second part the individual parts of the injection mold and their solutions are analyzed. The third part of the thesis deals with the creation of a 3D model of mold. The program in which the model was created and the main features of the program.The fourth part describes the production process with a description of each operation.What part of the mold is the given operation introduced, what to do with the operation and why this operation has been selected. In the fifth part, two of the production operations, namely roughing and EDM, are analyzed. The sixth part describes the technical aspects that are necessary for the construction of the tool and the evaluated economic aspect. The last part summarizes the main data from the whole work.
|
|
|
Technology design manufacturing plastic worm gear
Petrucha, Roman ; Kebrle, Ondřej (referee) ; Kandus, Bohumil (advisor)
The master thesis deals with the design of the injection mold for the production of a plastic two-part worm which is part of the worm gear set in the sleeve. From the beginning, an analysis of the assigned component was performed, specifying its function and specifying the criteria that must be met by the component. In addition, design of the production technology (injection molding) was carried out, followed by theoretical analysis of plastic materials, injection molding technology and mold design. Subsequently, in the practical part, a complete design of the injection mold was made on the basis of simulations and technological calculations. On the basis of the parameters of the injection mold, a machine was chosen, on which production should be carried out according to the proposed technological procedure. The conclusion of the thesis contains a technical and economic evaluation of the proposed technology for the production of Plastics splatter component.
|
|
|
Technology design manufacturing threaded plastic ends
Vrátný, Martin ; Kebrle, Ondřej (referee) ; Kandus, Bohumil (advisor)
This diploma thesis submits a proposal of technology design manufacturing threaded plastic ends. In the first part it deals with literary studies of plastics and plastic injection molding. In the second part is the design of an injection form for the specified component. Part of the practical part is also the right choice of material and the injection mold, which was designed based on the calculations of technological parameters. In the conclusion of this thesis is technical economic evaluation.
|
guest ::
