EXTRUDER

PURPOSE:To control the production with good efficiency, by detecting the crosssectional area of an extrudate at all times, comparing the detected crosssectional area with a reference value that is a predetermined value to which the crosssectional area is desirably controlled, and controlling the spe...

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Bibliographische Detailangaben
Hauptverfasser:	TANAHASHI MASATAKA, HAYASHI CHIKAHISA
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MAKING GRANULES OR PREFORMS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PERFORMING OPERATIONS PHYSICS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED PUNCHING METAL RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS REGULATING SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To control the production with good efficiency, by detecting the crosssectional area of an extrudate at all times, comparing the detected crosssectional area with a reference value that is a predetermined value to which the crosssectional area is desirably controlled, and controlling the speed of a take-up by a feed-back method so that the deviation becomes zero. CONSTITUTION:The crosssectional area of an extrudate is measured and the data is inputted into a speed controller 40. In the speed controller 40, the crosssectional area of the extrudate is compared with a prescribed crosssectional area that is a predetermined value which is aimed, and the take-up speed of the take-up 20 is adjusted so that the deviation becomes zero. The discharge amount Q of the extruder is given by the relationship: Q=K.SV wherein S is the crosssectional area, and V is the take-up speed. Therefore, if the crosssectional area of the extrudate becomes less than the aimed predetermined value, the take-up speed is lowered, while if it becomes higher than that value, the take-up speed of the take-up is increased.