Conveyors: power-driven – Conveyor arrangement for selecting among plural sources or... – With gravity-conveying means
Patent
1983-12-13
1985-11-26
Valenza, Joseph E.
Conveyors: power-driven
Conveyor arrangement for selecting among plural sources or...
With gravity-conveying means
193 36, 198365, 198367, 198598, B65G 4757
Patent
active
045550107
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a junction diverter for a transport system having a main conveyor path extending through or terminating at the junction, and a pair of lateral conveyor paths extending obliquely downwards from the junction at their respective sides of the main conveyor paths.
At the junction where a main conveyor path, which is e.g. a sorting conveyor in a parcel sorting system, meets a pair of lateral conveyor paths disposed opposite each other at either side of the main conveyor path, parcels are to be diverted to a desired one of these two lateral conveyor paths.
The Danish Patent Application No. 1538/77 discloses a conveyor having laterally tiltable carrier plates or trays capable of performing this task. The proposed solution, however, has resulted in a rather complicated conveyor because these tiltable carrier plates are incorporated in the entire main conveyor path, which consists of a very large number of adjoining carrier plates each of which has its own tilting mechanisms.
The Swedish Patent Specification No. 331 963 discloses a junction diverter containing, in the direction of the main conveyor path, an intermediate conveyor belt which has to be lowered when the parcels are to be diverted to one or the other lateral conveyor paths. This intermediate conveyor belt means that the main conveyor path is always interrupted and reduces the capacity of the overall system. Moreover, the intermediate conveyor belt causes the system to be relatively expensive to manufacture.
The Danish Patent Specification No. 121 288 discloses a transport system having a junction diverter which only diverts the parcels to one side. Consequently, the transport system in question requires another junction diverter if the parcels are to be diverted to the other side, and will therefore take up excessive space.
From U.S. Pat. No. 3,058,570 of Hansen a junction diverter for a transport system is known having a main conveyor path extending through or terminating at the junction. There is furthermore provided a pair of lateral conveyor paths extending obliquely downwards from the junction at their respective sides of the main conveyor path, the junction comprising means providing a movable supporting surface which, in an inoperative position, is disposed below the main conveyor path and can, in an operative position, be lifted above the main conveyor path to an inclined position in which it is flush with one or the other of the lateral conveyor paths.
This known junction diverter, however, comprises also basically the same drawbacks as the prior art described hereinbefore.
It is therefore the object of the invention is to solve the present problem far more simply without the drawbacks of the said known systems.
Accordingly, the invention provides a junction diverter for a transport system having a main conveyor path extending through or terminating at the junction, and a pair of lateral conveyor paths extending obliquely downwards from the junction at their respective sides of the main conveyor paths, the junction comprising means providing a supporting surface which in an inoperative position is disposed below the main conveyor path and can in an operative position be lifted above the main conveyor path to an inclined position in which it is flush with one or the other of the lateral conveyor paths, wherein the means are secured to and extend upwardly from a first carrier frame which is journalled on a second carrier frame for pivotal movement about a first axis disposed substantially in parallel with the main conveyor path and at one side of the center thereof, and that the second carrier frame is journalled on a frame for the main conveyor path for pivotal movement about a second axis disposed substantially in parallel with a main conveyor path and at the other side of the center thereof. Thus, the means providing the supporting surfacing, which can be inclined to one or the other side with respect to the main conveyor path, and the supporting surface itself are only necessary at the junction itself, while the main c
REFERENCES:
patent: 1933147 (1933-10-01), Paxton
patent: 3058570 (1962-10-01), Hansen
patent: 3642113 (1972-02-01), Burgis
patent: 3822777 (1974-07-01), Jepson
Flocks Karl W.
ITS-Intern Transport System A/S
Kim Lyle
Neimark Sheridan
Starobin A. Fred
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