EP 0052682 B1 19860226 - A DEVICE FOR PURGING A PLURAL COMPONENT MIXING AND DISPENSING GUN AND A GUN INCORPORATING IT
Title (en)
A DEVICE FOR PURGING A PLURAL COMPONENT MIXING AND DISPENSING GUN AND A GUN INCORPORATING IT
Publication
Application
Priority
EP 80304222 A 19801125
Abstract (en)
[origin: EP0052682A1] A gun (10) for mixing and dispensing plural component plastic materials, for example, polyurethane foam, is provided with a purging device operable independently of the foam mixing and dispensing mechanism. The purging device comprises a rod (68), normally positioned rearwardly of the foam component inlet orifices and mixing chamber (34), the rod being selectively actuable independently of the foam mixing and dispensing operations, by a two way air cylinder (72) controlled by the gun operator. Purging elements, for example, compressible spheres (58) or plugs of a plastic material such as styrene are fed under pressure to seat in a position rearwardly of the foam component inlet orifices and mixing chamber. Upon selective actuation of the rod (68), one of the spheres (58) is forced through the mixing chamber (34) to purge any residual foam components by a scraping action.
IPC 1-7
IPC 8 full level
B05B 15/02 (2006.01); B05B 15/52 (2018.01)
CPC (source: EP)
B05B 15/52 (2018.01)
Citation (examination)
US 3030666 A 19620424 - ADAMS ELMER L
Designated contracting state (EPC)
BE DE GB IT NL SE
DOCDB simple family (publication)
EP 0052682 A1 19820602; EP 0052682 B1 19860226; DE 3071459 D1 19860403
DOCDB simple family (application)
EP 80304222 A 19801125; DE 3071459 T 19801125