Conveyors: fluid current – With means to control conveying fluid or movement of load in... – Control of conveying fluid
Patent
1989-02-03
1990-08-14
Basinger, Sherman D.
Conveyors: fluid current
With means to control conveying fluid or movement of load in...
Control of conveying fluid
406177, 406180, B65G 5108
Patent
active
049483021
ABSTRACT:
Discharge apparatus for discharging broken-off fastener parts (such as the stems of blind rivets) from fastener installation apparatus, comprises a passageway (13) along which the parts (37) are conveyed away from the installation apparatus (11) by a flow of air generated by a vacuum pump (14). The end of the passageway (13) remote from the installation apparatus (11) is normally sealed against the entry of air by a discharge valve (16). A broken-off part (37) approaching the discharge valve (16) is detected by an approach sensor (34) which is connected by a latching relay unit (33) and a control valve (25) to actuate a pneumatic ram (22) to open the discharge valve (16). At the same time the vacuum pump (14) is turned off to prevent a reverse flow of air through the open valve (16). The part (37) is discharged through the valve (16) and into a receptacle (19) which is outside the vacuum system. An exit sensor (35 ) beyond the valve (16) detects the discharged part and actuates the control valve (25) to close the discharge valve (16) and turn on again the vacuum pump (14).
REFERENCES:
patent: 568291 (1896-09-01), Batcheller
patent: 1944769 (1934-01-01), Stoetzel
patent: 2135355 (1938-11-01), Scanlan
patent: 3853355 (1974-12-01), Buisson
Avdel Systems Limited
Avila Stephen P.
Basinger Sherman D.
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