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1. WO1981002879 - BULK MATERIAL HANDLER AND FEEDER

Publication Number WO/1981/002879
Publication Date 15.10.1981
International Application No. PCT/US1980/000350
International Filing Date 31.03.1980
IPC
B65H 20/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
20Advancing webs
02by friction roller
B65H 20/24 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
20Advancing webs
24by looping or like devices
CPC
B65H 20/02
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
20Advancing webs
02by friction roller
B65H 20/24
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
20Advancing webs
24by looping or like devices
B65H 2408/212
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
2408Specific machines
20for handling web(s)
21Accumulators
212of zigzag-type
Applicants
Inventors
Priority Data
US80/0035031.03.1980WO
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BULK MATERIAL HANDLER AND FEEDER
(FR) DISPOSITIF D"ALIMENTATION ET DE MANIPULATION DE MATERIAU EN VRAC
Abstract
(EN)
A bulk material feeder (10) has two rollers (12, 14), at least the lower (14) of which is driven (24, 26). Strip material (34) is threaded around the side of the upper roller (12) toward the direction of feed, between the rollers (12, 14), around the side of the lower roller (14) opposite the direction of feed and to downstream machinery (38) spaced from the feeder (10). Roller (12, 14) spacing is greater than material (34) thickness precluding compression of the material (34). Feed is produced by friction between the roller and material (34) only, Feed rate is greater than usage thereby producing a depending loop (40) between the feeder (10) and the downstream machinery (38). In one embodiment, increasing loop (40) size decreases material (34) and roller (14) contact, causing relative slippage and a discontinuance of feed. In another embodiment, both rollers (12, 14) are driven and loop (40) size is limited by a photoelectric device (42) and associated control circuitry.
(FR)
Un dispositif d"alimentation de materiau en vrac (10) possede deux rouleaux (12, 14), le rouleau inferieur (14) au moins etant entraine (24, 26). Un materiau en bandes (34) est enroule autour du cote du rouleau superieur (12) vers la direction d"alimentation, entre les rouleaux (12, 14), autour du rouleau inferieur (14) oppose a la direction d"alimentation et vers le cote aval de la machine (38) espace du dispositif d"alimentation (10). L"espacement entre les rouleaux (12, 14) est plus grand que l"epaisseur du materiau (34) empechant la compression du materiau (34). L"avance est effectuee par friction entre le rouleau (14) et le materiau (34) seulement. La vitesse d"avance est superieure a celle d"utilisation ce qui produit une boucle (40) entre le dispositif d"alimentation (10) et la partie aval de la machine (38). Dans un mode de realisation, l"accroissement de la dimension de la boucle (40) reduit le contact du materiau (34) et du rouleau (14), provoquant un glissement relatif et une alimentation discontinue. Dans un autre mode de realisation, les deux rouleaux (12, 14) sont entraines et la dimension de la boucle (40) est limitee par un dispositif photoelectrique (42) et un circuit de commande associe.
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