EXTRUSION DIES

• Main Authors: BREW, Thomas William, SHEN, Min, LI, Yuehao, SARIEGO, Kenneth Charles
• Format: Patent
• Language: English; French
• Published: 27.06.2019
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STEAM ENGINES; THEIR RELEVANT APPARATUS; TRANSPORTING; WEAPONS; WORKING CEMENT, CLAY, OR STONE; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A honeycomb extrusion die body (401) including inlet (414) and exit (402) faces, and a plurality of pins (406) on the exit face (402) defining a matrix of intersecting wide slots (425) and narrow slots (427). The wide slots (425) have an exit width (W1) greater than an exit width (W2) of the narrow slots (427). The die body (401) further includes feedholes (422) at the inlet face (414) and intersecting with inlet portions (416) to the wide slots (425) and/or the narrow slots (427). Some of the pins (406) defining the wide slots (425) include a first surface indentation feature (430) that is (i) located between the inlet portion (416) and the wide slot exit and (ii) spaced away from the wide slot exit. Some of the pins (406) defining the narrow slots (427) include a second surface indentation feature (434) that is (i) located between the inlet portion and the narrow slot exit and (ii) spaced away from the narrow slot exit. Cette invention concerne un corps (401) de filière d'extrusion en nid d'abeilles comprenant des faces d'entrée (414) et de sortie (402), et une pluralité de broches (406) sur la face de sortie (402) définissant une matrice de fentes larges (425) et de fentes étroites (427) croisées. Les fentes larges (425) ont une largeur de sortie (W1) supérieure à une largeur de sortie (W2) des fentes étroites (427). Le corps de filière (401) comprend en outre des trous d'alimentation (422) dans la face d'entrée (414) et se croisant avec des portions d'entrée (416) vers les fentes larges (425) et/ou les fentes étroites (427). Certaines des broches (406) définissant les fentes larges (425) comprennent un premier élément (430) d'indentation de surface qui est (i) situé entre la portion d'entrée (416) et la sortie de fente large et (ii) espacé de la sortie de fente large. Certaines des broches (406) définissant les fentes étroites (427) comprennent un second élément (434) d'indentation de surface qui est (i) situé entre la portion d'entrée et la sortie de fente étroite et (ii) espacée de la sortie de fente étroite.