Konceptframtagning av utstötarbord

Sammanfattning: Metso Ersmark develop and manufacture rubber liners for mining mills. When making these rubber liners, large molds are placed in the furnaces. The molds are filled with rubber and metal parts which then are vulcanized together under pressure and heat. When the vulcanize process is completed, the mold is taken out on a so-called ejection table. The table has the task of pushing out the details of the molds using jacks and placing the molds at an ergonomic working height for the production staff before and after the vulcanization process.   The aim of this graduation project is to develop a concept on a table with lifting device to reach the upper floor of the production furnace, a locking function of the ejection table when pressing out the rubber liner and increase the stroke length of the ejector function. Today there is two already existing ejection tables in Metso's production that are useful for this project,  12-54 and 12-39. These have been sources of inspiration for this work and a CAD model of 12-54 has been the basis for the final result.   The concept was modeled in Inventor and calculations were performed to ensure the strength. The result was a table similar to 12-54 but with a longer stroke on the ejector function, wider table surface to enable a scissor lift, scissor lift as a lifting device and locking in the bottom position to relieve the scissor lift during loosening of the rubber lining. The goal in this project was reached, except that calculations was not made for the table lifting device. A concept of a scissor lift adapted for the table was drafted for a visual result, but detailed job to ensure its function was not made. Metso Ersmark develop and manufacture rubber liners for mining mills. When making these rubber liners, large molds are placed in the furnaces. The molds are filled with rubber and metal parts which then are vulcanized together under pressure and heat. When the vulcanize process is completed, the mold is taken out on a so-called ejection table. The table has the task of pushing out the details of the molds using jacks and placing the molds at an ergonomic working height for the production staff before and after the vulcanization process.   The aim of this graduation project is to develop a concept on a table with lifting device to reach the upper floor of the production furnace, a locking function of the ejection table when pressing out the rubber liner and increase the stroke length of the ejector function. Today there is two already existing ejection tables in Metso's production that are useful for this project,  12-54 and 12-39. These have been sources of inspiration for this work and a CAD model of 12-54 has been the basis for the final result.   The concept was modeled in Inventor and calculations were performed to ensure the strength. The result was a table similar to 12-54 but with a longer stroke on the ejector function, wider table surface to enable a scissor lift, scissor lift as a lifting device and locking in the bottom position to relieve the scissor lift during loosening of the rubber lining. The goal in this project was reached, except that calculations was not made for the table lifting device. A concept of a scissor lift adapted for the table was drafted for a visual result, but detailed job to ensure its function was not made. Metso Ersmark develop and manufacture rubber liners for mining mills. When making these rubber liners, large molds are placed in the furnaces. The molds are filled with rubber and metal parts which then are vulcanized together under pressure and heat. When the vulcanize process is completed, the mold is taken out on a so-called ejection table. The table has the task of pushing out the details of the molds using jacks and placing the molds at an ergonomic working height for the production staff before and after the vulcanization process.   The aim of this graduation project is to develop a concept on a table with lifting device to reach the upper floor of the production furnace, a locking function of the ejection table when pressing out the rubber liner and increase the stroke length of the ejector function. Today there is two already existing ejection tables in Metso's production that are useful for this project,  12-54 and 12-39. These have been sources of inspiration for this work and a CAD model of 12-54 has been the basis for the final result.   The concept was modeled in Inventor and calculations were performed to ensure the strength. The result was a table similar to 12-54 but with a longer stroke on the ejector function, wider table surface to enable a scissor lift, scissor lift as a lifting device and locking in the bottom position to relieve the scissor lift during loosening of the rubber lining. The goal in this project was reached, except that calculations was not made for the table lifting device. A concept of a scissor lift adapted for the table was drafted for a visual result, but detailed job to ensure its function was not made.