Conveyors: power-driven – Conveying system having plural power-driven conveying sections – With relatively adjustable sections
Patent
1990-12-21
1991-12-10
Dayoan, D. Glenn
Conveyors: power-driven
Conveying system having plural power-driven conveying sections
With relatively adjustable sections
1986261, 1986265, 198631, B65G 1514
Patent
active
050709984
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a conveyor system for handling food products, such as fish, and of the type comprising two cooperating, horizontally oriented, vertically displaced conveyor belts.
BACKGROUND OF THE INVENTION
The use of conveyor belts in connection with handling and processing of food products is widely known and may involve feed faces whose longitudinal directions may be oriented horizontally or in various inclinations transversely and longitudinally thereof.
For example, the Danish application 0447/76 concerns an apparatus for treating fish and comprises a plurality of conveyor belts having substantially horizontally oriented conveying surfaces. This system advances and positions fish along a horizontal path while the fish are subjected to i.a. cleaning. Thus, the supporting face does not change its nature during the processing of the fish.
Known is also a fish feeding system where the fish are gripped and retained by holding means which engage the gill openings of the fish and thereby retain and position the fish in a subsequent cleaning operation.
The above-mentioned plants have preferably been used in connection with cleaning fish of guts, etc., but conveyor belts are also known which support fish horizontally for feeding at a station where decided boning of fish takes place.
In the past, fish have thus been disposed on a horizontal supporting face for providing the said operations, but the invention is based on the finding that significant operational advantages will be obtained if the fish can be held in a vertical position via the tail, which makes complete cleaning of the fish possible, where not only guts, but also bones and other matter can advantageously be removed, especially because of an increasing automatization in this field too.
SUMMARY OF THE INVENTION
The object of the invention is to provide a conveyor system of the stated type which permits said retention and feeding of the fish so that the fish fillet is free of support substantially along its entire surface so that unimpeded treatment and advantageous offal collection are obtained.
This object is obtained by providing a conveyor system which has a double conveyor with two cooperating conveyor belts arranged vertically one above the other so as to be capable of gripping food products on a feed conveyor and being able to transport the food products to a receiving conveyor. When a conveyor system is constructed in this manner, the result will be a system which, because the conveyor belts of the double conveyor are oriented vertically above each other and horizontally, can catch, squeeze and retain the fish fillets in their tail portion in a very simple manner, so that they hang downwardly during transport and treatment in this station. Of course, this vertical treatment position entails that bones and other impurities can more easily be separated from the fish meat.
For this mode of treatment to be feasible with fish of various types, sizes and qualities, the double conveyor is arranged so that it can be laterally displaced at its collection end in a horizontal plane for positioning along the end face of a preceding conveyor. The angular position of the conveyor with respect to a preceding conveyor feed belt can currently be adjusted in this manner on the basis of information on the nature of the individual fillets, said information being recorded from a preceding station. When, the preceding detection station is arranged to give information to an ejector device provided in connection with the conveyor, control measurements from a station may signal rejection and thus ejection of a fish fillet when this does not comply with specified control data. The structure of the double conveyor makes it possible that ejection of fillets can advantageously be effected by locally reducing the squeezing so that the fillet just drops down into the collection unit for ejected fillets.
The conveyor system is moreover advantageously provided in combination with a chute or guide rail which is disposed in the immediate vicinity of the collecti
REFERENCES:
patent: 1219077 (1917-03-01), Buchanan
patent: 3915282 (1975-10-01), Remensperger
patent: 4094399 (1978-06-01), George
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patent: 4502586 (1985-03-01), Dusel et al.
patent: 4674636 (1987-06-01), Sekitani et al.
patent: 4735302 (1988-04-01), Marchetti
Dayoan D. Glenn
Lumetech A/S
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