Conveyors: power-driven – Conveyor system for arranging or rearranging stream of items – By laterally or vertically moving successive items in...
Patent
1994-06-17
1996-03-26
Bidwell, James R.
Conveyors: power-driven
Conveyor system for arranging or rearranging stream of items
By laterally or vertically moving successive items in...
1984591, B65G 4726
Patent
active
055013163
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to apparatus for routing containers of glass, glass-like material or plastics material from one conveyor belt to another. More particularly, the invention pertains to apparatus for routing items arriving on a first conveyor belt in a row at a comparatively high first speed to a second conveyor belt running at a lower second speed and at an angle to the first conveyor belt. The second conveyor belt carries away the containers in a row.
Transportation fingers arranged in and moved by a common drive member route each container from the first to the second conveyor belt. In the routing of the containers, the transportation fingers are guided on a continuously curved path which is concave with reference to the containers. Support means is provided to maintain each container on the continuously curved path.
2. Description of Related Art
In one known apparatus of this type (transfer apparatus type WT 650 of the company Ernst Pennekamp, Ho/ lker Feld 22, W-5600 Wuppertal 2, Germany) the drive member is formed as an endless chain whose working section is pushed by a driving chain wheel. Each transportation finger is connected fixedly with a stopping member of the support means to an L-shaped component. Each said component is connected to the chain by a trailing arm for pivotal movement about a vertical axis, with the arm having at its free end a curve roller arranged to run in a stationary curved track. The transportation fingers, by special shaping of the curved track, should pivot inwards into the container train at the input to the first conveyor belt and in the same way should pivot outwards out of contact with the containers after the delivery of the containers to the second conveyor belt. At the delivery end the chain is guided by means of a deflection chain wheel whose axis is adjustable for tensioning the chain in the direction of the second conveyor belt. Between the first and the second conveyor belts is mounted a stationary slide plate for the containers. The chain is driven at least approximately at the lower, second speed of the second conveyor belt. It is disadvantageous that each container, at least on the slide plate, is not located in a defined, reproducible position against its transportation finger and the associated stopping member. Thus, it cannot be guaranteed that the containers will reach the second conveyor belt in a uniform row and in constant distances from each other. Moreover, the periodic pivoting of the transportation fingers increases the cost and leads to wear.
In the customary way, a glass forming machine delivers newly formed containers to the first conveyor belt. For technical reasons, the containers are positioned on the first conveyor belt at a comparatively large distance from one another. The first conveyor belt runs at a comparatively high speed. Under these conditions, introduction of the containers into the subsequent annealing lehr can be problematic. It is therefore customary to route the train of containers from the first conveyor belt on to a second conveyor belt which runs at an angle of mostly 90.degree. thereto.
The second conveyor belt runs at a lower speed, so that the containers on the second conveyor belt are positioned at a smaller distance from each other. The containers are pushed into the annealing lehr from the second conveyor belt by a stacker which is known per se and which can handle a greater number of containers simultaneously. To permit the pushing movement to be performed in an orderly yet rapid manner without the risk of upsetting the containers, the spacing between the containers on the second conveyor belt should be alike and as small as possible. Moreover, the containers on the second conveyor belt should be arranged in a straight line as far as possible.
Previously known devices for routing the containers from the first to the second conveyor belt impart shocks to the containers. The transportation fingers of the devices circulate essentially at the lower speed of the s
REFERENCES:
patent: 3193076 (1965-07-01), Creed
patent: 3701407 (1972-10-01), Kulig
patent: 4411353 (1983-10-01), McDole
patent: 4776448 (1988-10-01), Kulig
patent: 5277296 (1994-01-01), Roberts et al.
Hermening Heinz
Schwarzer Siegfried
Seidel Hans-Georg
Bidwell James R.
Hecht Gary A.
The Firm Hermann Heye
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