Conveyors: power-driven – Conveyor for changing attitude of item relative to conveyed... – By actuating item-holder relative to holder-carrying conveyor
Patent
1993-07-29
1995-06-20
Valenza, Joseph E.
Conveyors: power-driven
Conveyor for changing attitude of item relative to conveyed...
By actuating item-holder relative to holder-carrying conveyor
1988037, 19880312, B65G 4724
Patent
active
054254418
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a transporting device, preferably for transporting workpieces between processing stations, in particular for treating foundry cores and molds, the device comprising an upright and at least one holding device carried by the upright for receiving the workpiece, the holding device being again provided with at least one holding element adapted for engagement with the workpiece.
Transporting devices of the kind in question have been known from practice for years. To demonstrate the problems having so far been attached to these transport devices, the description as it proceeds will refer to the foundry practice, without however limiting thereto the teaching of the present invention.
In the foundry practice, in particular for casting molded pieces, cores or molds are generally manufactured separately, combined, and interconnected. Thereafter, the interconnected cores are individually transported to a blacking device, in that the cores are moved in a downward hanging position into a dipping station. To this end, the cores are generally flooded by raising a tank filled with blacking. Finally, it is necessary to allow excessive blacking to drip from the cores, the latter being delivered at a transfer station to a further transporting device, for example for drying in drying furnaces.
In practice however, the transporting devices for transporting foundry cores to the respective processing stations are problematic, inasmuch as these transporting devices allow only a certain controlled speed on the one hand, and require considerable amount of floor space on the other hand as a result of the generally linear arrangement of the processing stations.
It is therefore the object of the present invention to configure and further develop the initially-described transporting device such that this device allows to realize a fast timing sequence with little floor space requirements. This transporting device is to be particularly suitable for the treatment of foundry cores and molds.
SUMMARY OF THE INVENTION
The transporting device of the present invention accomplishes the foregoing object. Accordingly, the initially-described transporting device is configured and further developed such that the holding device is continuously rotatable about a vertical axis, so that the holding element describes a substantially circular path.
In accordance with the invention, it has primarily been recognized that it is necessary to arrange the processing stations in a circle to shorten the paths of transportation on the one hand, and to reduce the floor space requirements on the other. Accordingly, the holding device is adapted for continuous rotation about a vertical axis, so that the holding element describes a substantially circular path, along which the individual processing stations, for example, the blacking device and the dripping zone are arranged.
In an especially advantageous manner, the holding device serving to hold the workpiece is also adapted for rotation about a horizontal axis. Such a rotation can be realized preferably in a range up to 180.degree.. Likewise, it would be conceivable to design and construct the holding device for an endless horizontal rotation or pivoting by 360.degree., thereby making it unnecessary to rotate or pivot the holding device back.
Assuming that the workpiece to be processed is placed from outside the transporting device onto the holding device and secured thereon, it is possible to pivot the workpiece downward via the horizontal rotating means. Accordingly, the holding element can be rotated in any horizontal position of the holding device from an upward directed position to a downward directed position.
To be able to process or transport several workpieces at the same time, at least two holding devices are provided in a further advantageous manner, the holding devices being arranged oppositely to one another at equal distances from the vertical axis of rotation. Naturally, it is possible to arrange several axes of rotation in star shape around t
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patent: 4783905 (1988-11-01), Hasenkamp
patent: 4798276 (1989-01-01), Loeffler
patent: 5156255 (1992-10-01), Landua et al.
Landua Werner
Muller Jurgen
Rommel Reiner
Adolf Hottinger Maschinenbau GmbH
Valenza Joseph E.
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