Conveyors: power-driven – With means to facilitate working – treating – or inspecting... – Means to transfer a load back and forth between the mainline...
Patent
1987-02-02
1989-02-14
Spar, Robert J.
Conveyors: power-driven
With means to facilitate working, treating, or inspecting...
Means to transfer a load back and forth between the mainline...
198360, 198367, 1984633, 209655, 209924, B65G 4700
Patent
active
048040789
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention refers to a sorting device for conveyor belt systems of the type comprising a plurality of conveyor belt units that can be angularly oscillated from a basically horizontal position, to a downwardly inclined position in the travel direction of the objects being conveyed.
2. Description of the Prior Art
Conveyors of the above mentioned type are used widely in several technical fields. For example in the industial field they are used as distributors in warehouses or as collectors and sorters in assembly lines. Moreover, in post offices they are used to select, sort and forward envelopes, packages, etc.
As it is known, conveyor belts have a fairly simple structure, composed of conveyor belts wound around their respective motorized rollers. By placing several conveyor belts one behind the other, a chain or conveyor belt line is created. Each individual conveyor constitutes what experts in the field refer to as a "sorting unit". So that sorting takes place on one side or the other of a conveyor belt line, several rollers assembled between one band and the other of a unit with axes that are perpendicular to those of the motor rollers that can be either raised or lowered to sort the package in a direction perpendicular to that of the conveyor belt line, have been designed.
An example of a conveyor belt capable of this type of sorting has been described and illustrated by the same applicant in the Italian Pat. No. 1025846 to which reference is made for further details.
Subsequent improvements have made possible conveyor belts capable of transporting and sorting an increasingly larger number of products.
At present the sorting devices designed on the basis of known technology are, generally speaking, efficient and their performance is optimum.
However, should there be a desire to increase the number of outputs, while maintaining a simple structure modification, problems of cost and size arise.
SUMMARY OF THE INVENTION
The main object of this invention is to solve the above mentioned problems and to design a sorting device with a simple and fairly inexpensive structure.
Another object of this invention is to design a device with several outputs, whose overall size is smaller than that obtainable with any other type of known device with the same number of outputs.
A further object of this invention is to design a sorting device that is easy to use when combined with existing conveyor belts.
These objects and others, which will become more apparent hereinafter, are basically attained by using a sorting device for conveyor belts. This device comprises a flat element, mounted on a pivot which has a longitudinal axis that lies substantially in the plane created by an inclined conveyor belts, and the pivot has a stroke that runs from a first lateral sorting position of the carried objects, to a second position which is symmetrical across a vertical plane through the above mentioned pivot. Moreover the device further comprises a set of chutes with convergent axes, placed symmetrically across the vertical plane and below the pivot, to convey the objects being transported to their respective containers. The containers are, situated below the chutes, and the stroke of the flat element is controlled by a suitable actuator means.
BRIEF DESCRIPTION OF THE DRAWINGS
Further features and advantages will be clearer from a description of a preferred, but not exclusive, embodiment of this invention, illustrated by way of an indicative and not limitative example in the enclosed drawings, where:
FIG. 1 shows a schematic front elevation view of the sorting device in accordance with this invention; and
FIG. 2 shows a schematic perspective view of the sorting device in different working positions.
BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENTS
With reference to the above mentioned figures, and in particular to FIG. 1, reference numeral 1 indicates the whole conveyor belt system.
It is composed, in a fashion known per se, of a number of conveyor belts 2 to which s
REFERENCES:
patent: 2868245 (1959-01-01), Ernst
patent: 2901082 (1959-08-01), Baumann
patent: 3631979 (1972-01-01), Frankiewicz et al.
patent: 3776675 (1973-12-01), Veneria
patent: 4011935 (1977-03-01), Massey
patent: 4555010 (1985-11-01), Solund
Doyle Jennifer L.
Meccanizzazione Postale E Automazione SpA (MPA)
Spar Robert J.
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