Material or article handling – Plural – static structures for supporting discrete loads and... – Load-underlying members
Patent
1991-07-11
1994-02-15
Werner, Frank E.
Material or article handling
Plural, static structures for supporting discrete loads and...
Load-underlying members
414786, 414279, 414284, 414283, 414911, 364478, B65G 106
Patent
active
052861570
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method and apparatus for storing paper rolls in a storage area where the rolls are deliverd and stored one above the other and from where they are retrieved for further processing.
Method and a similar apparatus are proposed in the Finnish patent application 864705 and accordingly one object of the present invention is to further develop and improve this method and apparatus.
The method of the invention is characterized in that the storing means comprises a separate transport carriage for moving paper rolls from the storing means into the longish corridors in the storage shelving and back from the storage to the storing means. The invention optimizes the utilization of the storage space in both vertical and horizontal directions. Thus, e.g. in the lengthwise direction of a shelving corridor, the corridor may accommodate a larger number of short rolls than of long rolls, which means that the utilization rate of the store can be optimized. The utilization rate is calculated and optimized by a computer.
A preferred embodiment of the invention is characterized in that the paper rolls are brought into the store in a recumbent position by a forklift truck and deposited on a reception station, where the transport carriage of the storing means picks them up either singly or several rolls at a time and takes them to the storing means, which then moves to a definite place in the store, whereupon the transport carriage takes the roll(s) into a shelving corridor reserved for the sort of roll in question. As the rolls are thus held in a recumbent position throughout the storage process, they are very unlikely to be damaged and the storage space in the shelving can be utilized to the optimum. Paper rolls of a given size are always stored in the same shelving corridor, reserved for the roll size in question.
The invention also relates to an apparatus for implementing the method described above. The apparatus comprises a storing means, such as a stacker, by means of which the incoming paper rolls can be placed in the store and retrieved for delivery to a processing machine. The apparatus of the invention is characterized in that the storage space consists of longish shelving corridors known in themselves, where the transport carriage of the stacker can drive in to deposit or retrieve paper rolls. The invention permits optimal utilization of the storage space in vertical as well as lengthwise and sideways directions. In principle, such a store with the necessary equipment can be built in any space.
An embodiment of the invention is characterized in that the carriage support of the stacker can be rotated through 180.degree. around its vertical axis so as to allow the transport carriage resting on it to be turned in such manner that the carriage is able to move forwards, i.e. with the lifting fork first, into the shelving corridors on both sides of the stacker. Thus the transport carriage can serve two separate sets of storage shelves on either side of the stacker.
An embodiment of the invention is further characterized in that each shelving corridor is provided with a pair of U-shaped tracks connected to each other by a concave carrier surface on which the paper rolls can be deposited for storage, said U-shaped tracks serving as running tracks for the wheels of the transport carriage. Such a solution is cheap and prevents the outer layer of the paper roll from being damaged by the weight of the roll itself, because the supporting surface of the roll is sufficiently large.
The carrier surface may also consist e.g. of a bandlike or similar structure which is attached to a supporting wall and sustains high tensile stresses. Due to the weight of the paper roll, the carrier surface undergoes an elastic deformation that allows it to adapt to the circular form of the roll. For this adaptation, the elasticity of the supporting wall itself is also utilized.
According to another feature of the present invention, an elastic steel plate is used as a carrier surface, the plate being of a sufficiently t
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Automatische Lagerung von Blechbunden, dhf-Kennziffer 162.
Hilber Walther
Vainio Frans
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