Production line for chairs - SIRIUS Praha - #1

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Project case study: Production line for chairs This production line enables to manufacture the chair parts like - outer side frame, inner side frame and seat frame. The production line contains following parts: manipulator, 2 identical parts of production lines. Both parts contain complete production operation for manufacturing all frames.. About customer Kovona a.s., was founded in 2000. Birth of this company was set up by repurchase of production assets of Kovona Karvina, a.s. corporation. Fundamental business activities at the very beginning, was production of light shelf-racks, production of metal interior components and surfacing by powdered spray stuff. In this context, it is good to mention their collaboration with Skoda Auto a.s., where they delivered discs for car wheels. Due to its abidance in a continuity of secular development of metal processing craftsmanship, this company got the unique opportunity to establish relations with globally orientated distribution partners. Already in a first year of existence of the company, the negotiations with Ikea Corporation were started about a serial mass production of office furniture. The result aroused in a long-term business contract, which increasing significance set off an energetic growth of the company in years to come. At the end of 2003, a new production facility was built in Cesky Tesin and a serial mass production of folding chairs was started up. Technical description of the production line \ \ Punching / /units  \ \ Angular \ Drilling units / /punching units/ /with bend Bending units  Working cycle of whole production workplace - The manipulator jaws clamps two semi-products (outer and inner frames) in the handover place and at the same time a second jaws unbends the prior two semi-products into the machine loading magazines for outer and inner frames - manipulator drives forward and the working cycle is repeated - it refills the machine magazines - semi-products unbent by loading magazines falls into bending units, then are centered and after clamping are bended into the required design - semi-products are unloaded from bending unit by feeder and then are moved into punching units - after semi-product clamping succeeds punching units stroke (in case of outer frame also set ups with drilling units and bending units); firstly the units clamp the semi-product and through punch stroke are made required holes, including bend - semi-product is unbends from punching unit by feeder and moved on unloading chute finished by delivery points in case of seat frame is filling process provided by docking equipment - the semi-products are taking over from the transport container and stocking into bending unit (other machine functions are analogous like at outer and inner frame) This production line manufactures whole chair construction. One chair takes only 4 seconds. Whole chairs production represents a complexly automatic working cycle without human interventions. According to that the production line requires highest level of accuracy. Complete production covers interconnection with loading equipment, which prepares and loads the material into production line (made by SIRIUS) and also cover interconnection to automatic assembly-line. SIRIUS Praha, Ltd. Polygraficka 18, CZ - 10800 Prague 10, Czech Republic, E.U. Tel. +420 272 703 594 I Fax +420 272 703 794 www.sirius-praha.cz I sirius@sirius-praha.cz