The following paper will illustrate the development of a multiflex chain in hybrid construction. The aim of this novel chain variant is to improve the stiffness and strength in comparison to conventional plastic slide chains. A two part multiflex chain with a chain pitch of 33.5 mm and a structural width of 83 mm was used as the basis for the development of the hybrid multiflex chain. The hybrid multiflex chain is supposed to be integrated in already existing layouts of chain conveyors. The load bearing structure of the single chain links is manufactured in the metal die cast procedure while taking the constructive, production related, and operational aspects into consideration and subsequently covered in the injection molding process with plastics commonly used for multiflex chains. The evaluation of the improved stiffness and strength takes place in the course of extensive test series. / In der folgenden Abhandlung wird die Entwicklung einer Multiflex-Kette in Hybridbauweise erläutert. Mit dieser neuartigen Kettenvariante soll eine Steifigkeits- und Festigkeitssteigerung gegenüber den konventionellen Kunststoffgleitketten erzielt werden. Als Ausgangsbasis für die Entwicklung der hybriden Förderkette dient eine zweiteilig ausgeführte Multiflex-Kette mit der Teilung von 33,5 mm und einer Baubreite von 83 mm. Die hybride Förderkette soll in bestehende Layouts von Kettenförderern integriert werden können. Unter Beachtung konstruktiver, fertigungstechnischer und betrieblicher Aspekte wird die lasttragende Struktur der einzelnen Kettenglieder im Metalldruckgussprozess gefertigt und anschließend mit einem, für Multiflex-Ketten üblichen Kunststoff im Spritzgießprozess ummantelt. Die Evaluierung der Steifigkeits- bzw. Festigkeitssteigerung erfolgt im Rahmen umfangreicher Versuchsreihen.

During the continuous production of bread sometimes there are problems that lead to interruptions in the production and consequently to quality problems. One such problem is the bread burning in the contact area between the bread and the conveyor belt. In order to understand the problem and to know how to quantify it, it is necessary to understand what a thermodynamic system is and what types of systems exist, how the various types of heat transfer are processed, how to measure the temperature of an object by infrared radiation and some mathematical methods such as the least square root method. Temperature measurements were planned and carried out. The goal with the first experiment was to understand how the temperature of the conveyor belt varies during an interruption. All the other tests were done to investigate the effects of different solutions in the temperature variation of the belt. According to the results, the best solution is to turn off the oven during an interruption and the worst to spray the belt with water. To spray the belt with water may be a better solution than these results shows, but it is very affected by other problems, like depositions of limestone on the nozzles. A lot more solutions could be found but due to the time available, it was not possible to investigate all the variables/solutions in the process. A long-term  study would help understand much more within the regulation of the industrial baking process. / Under kontinuerlig produktion av bröd finns det ibland problem som leder till avbrott i produktionen och kvalitetsproblem. Ett sådant problem är att brödet blir bränt  i kontaktytan mellan brödet och transportbandet. För att förstå problemet och veta hur man kvantifierar detta,  är det nödvändigt att förstå vad ett termodynamiskt system är och vilka typer av system finns, hur olika typer av värmeöverföring sker, hur man mäter temperatur med hjälp av infraröd strålning och några matematiska metoder som minst kvadratrotsmetoden. Temperaturmätningar planerades och genomfördes. Målet med det första experimentet var att förstå hur transportbandets temperatur varierar under ett huppehåll. Alla andra tester utförades för att undersöka effekterna av de olika lösningarna i bandets temperaturvariation. Enligt resultaten är den bästa lösningen att stänga av ugnen under ett uppehåll och det värsta att spreya bältet med vatten. Att spreya bältet med vatten kan vara en bättre lösning än vad resultaten visar, men det påverkas mycket av andra problem, som avsättningar av kalksten på munstyckena. Många fler lösningar kunde hittas men det var inte möjligt att undersöka alla variabler / lösningar i processen på grund av tillgänglig tid. En långsiktig studie skulle hjälpa till att förstå mycket mer inom regleringen av industriell bakning.

This master’s thesis is dealing with the conveying machines used for transport of piece goods. The thesis is divided into theoretical and practical part. In the first part is performed overview of the most widely used conveyors. Second part of this thesis is focused on creating design of conveyor system for distribution centre with required line throughput.

The aim of this thesis is to design a device for relocation and orientation of special clamps using vibration technology. The introductory part describes the analysis of the current state of science and technology in the field of vibration technology. The next part describes the design of the device itself, risk analysis and economic evaluation of the whole device.

The thesis deals with the design of technology for production of wheels to be manufactured by die forging 15 142 low-alloy steel at an amount of 500,000 items per year. Based on a consideration of the suitable methods of manufacture, die forging on a Jing Duann FP-1600G vertical forging press was chosen as the best, as documented by the necessary technological and design drawings. A die with inserts made of 19 552 steel was designed for this machine. In view of the volume of annual production, a fully automated workplace was designed consisting of three robots and a chain and pan conveyor. In the conclusion there was a technical-economic evaluation of costs for the material of the semi-finished products and price of dies for annual production.

The aim of the thesis is to get acquainted with the principle and function of functional generators. Furthermore, with their design using active elements that can be electronically controlled. The design and simulation results are presented in Chapter 4, which also shows schematics of simulated and measured circuits.

This thesis is aimed at the design of a loading device for a multi-storey bakery oven, which is going to be located in a bread production line. The introduction describes a principle of operation of the bread line and defines the parameters of the device. Furthermore, the hygienic, design and material requirements for the machines which are used in a food industry are briefly stated. Next part summarizes the possibilities of design solutions and the chosen concept. The construction part is aimed at the design of the conveyor and the scissor mechanism. In the calculation part, a static calculation of the lifting mechanism and a strength check of its arms and pins is performed. This thesis also includes the design of a hydraulic circuit for a stroke drive. Finally, the method of a control of the stacker and its safety elements are discussed.

The aim of the thesis is to get acquainted with the principle and function of functional generators. Furthermore, with their design using active elements that can be electronically controlled. The design and simulation results are presented in Chapter 4, which also shows schematics of simulated and measured circuits.

This diploma thesis deals with the issue of adhesion of pollution to the final surface treatments of the ETICS system. The theoretical part deals with important factors and processes that affect the degree of adhesion of pollution. The practical part of the diploma thesis follows the diploma thesis of Ing. Jakub Krejčík. Optimization of test methods for simulation of artificial pollution on tested samples was proposed. These samples were then evaluated in the laboratory and also compared with plasters that were exposed to real pollution from the natural environment.

This diploma thesis describes the actual situation of the manure spreader machines of the organic manure and it compares the characteristics of these machines from different manufacturers. And then this thesis designs the driving system for cutter mechanism, for the manure conveyor and the manure spreading device including the details. Drawings are in the attachment.