WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |

Search International and National Patent Collections
World Intellectual Property Organization
Machine translation
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000140    International Application No.:    PCT/US1979/000445
Publication Date: 07.02.1980 International Filing Date: 25.06.1979
B24C 3/26 (2006.01)
Priority Data:
918707 26.06.1978 US
Abstract: front page image
(EN)A deflashing apparatus having an insulated housing (C) defining a deflashing chamber in which a continuous belt (B) rotates for tumbling molded or die cast articles having flash thereon. The articles within the chamber are bombarded by a high velocity stream of deflashing media propelled into the chamber by a throwing wheel (93). The deflashing chamber is maintained in a cryogenic environment which lowers the temperature of articles so that the flash becomes brittle in comparison to the body portion of the article and is readily removed by the impact of deflashing media and the tumbling along the belt (B). A gas interlock which may be referred to as a vestible structure (V) is additionally disclosed which forms an effective barrier to prevent the escape of the cryogenic gas during the insertion and removal of articles from the chamber. The efficiency of the deflashing process is enhanced by novel means (516, 518, 525) which permit a variable adjustment during machine operation of the density, intensity, and pattern of the thrown media to ensure proper and uniform flash removal.
(FR)Un appareil d"ebavurage comprend une enceinte isolee (C) definissant une chambre d"ebavurage dans laquelle une bande continue (B) tourne pour sabler les articles moules ou coules ayant des bavures. Les articles sont bombardes dans la chambre par un courant a haute vitesse d"un materiau d"ebavurage propulse dans la chambre par une roue de projection (93). La chambre d"ebavurage est maintenue dans un environnement cryogenique qui abaisse la temperature des articles de sorte que les bavures deviennent cassantes par rapport aux corps des articles et sont enlevees par l"impact du materiau d"ebavurage et le sablage le long de la bande (B). Un dispositif de retention gazeuse, du type sas (v) est egalement decrit; il forme une barriere efficace qui empeche le gaz cryogenique de s"echapper pendant l"introduction des articles dans la chambre et leur retrait. L"efficacite du procede d"ebavurage est ameliore par de nouveaux moyens (516, 518, 525) qui permettent, pendant le fonctionnement de la machine, un reglage variable de la densite, de l"intensite, et de la configuration de la projection du materiau projete pour assurer un ebavurage correct et uniforme.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)