Estudo de ocorrência de gap entre tampa traseira e gabinete injetados plasticamente num monitor de 29 polegas

Abstract

Over time, processes and products have increased their complexity, consequently, quality follows this trend. In this regard, customers are more concerned about your product and are looking for something without flaws or defects. In this way, companies, in order to remain in the market, must deliver products and services that satisfy and conquer their consumers, since losing the trust of a customer can have consequences that go beyond the reduction of the cost of the product (RODRIGUES, 2018 ). Based on this, this project aimed to highlight a recurring failure for a monitor factory of a South Korean multinational company in the Industrial Pole of Manaus, where there is a production line capable of making the complete assembly of the monitor for shipment to the customer. The monitor is divided into three main parts: the module (where the screen and the main control board are located), the cabinet (which is attached to the module to fix it to the cover), and the rear cover (responsible for protecting the device against dirt and impacts. In the production line of the factory in question, it was observed that some monitors had a certain opening in one of the closing parts, specifically in the upper right corner between the cabinet and the back cover. Such a problem, recurrent in factories, is called of GAP (from the English, “interval”) Due to this, the production had to be interrupted for a certain time. In this context, the opportunity arose to develop and research methods that were capable of working with root cause concepts such as the Ishikawa diagram and with problem solving concepts such as the famous 8D method to act systematically so that it was possible to use interim solutions to maintain production while the root cause is not reached, consequently, the definitive solution. After that, it was observed that the problem was concentrated in injection parameters that directly affected the cabinet (part that is the result of plastic injection) that, after adjustments, had positive effects, in addition to project improvements that were able to eradicate the problem of GAP and serve as an example for countless other cases in this company.