Material or article handling – Chamber of a type utilized for a heating function and...
Patent
1986-11-05
1988-10-04
Paperner, Leslie J.
Material or article handling
Chamber of a type utilized for a heating function and...
271 181, 414122, 414281, B65G 5904
Patent
active
047752777
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention concerns a manufacturing system for the automatic processing of metallic work pieces carried by pallets in which a pallet storage is provided between at least one production machine and a guide path for the transport of the pallets, from which (pallet storage) is effected the feeding of the production machine.
BACKGROUND AND SUMMARY OF THE INVENTION
An arrangement of this kind is already known from VDI-Z 121 (1979) No. 3, pp. 83-95, particularly illustration 26. With respect to automation of production processes, arrangements of this type start with the fact that buffer zones must be provided between the transport means for the pallets and the production machines so as to be able to store pallets temporarily during unavailability of one or the other equipment.
The invention begins from this state of the art and has as its objective to fashion a manufacturing system in such manner that metal sheets can be fed to production machines automatically, without the need for essential modification of the latter.
The essence of the invention resides in the fact that a pallet storage for pallets loaded with stacks of sheet metal realized as a high (multi-tier) shelf is provided at a distance ahead of the feed station of the production machine, and that the intervening space is filled by a transport means which is guided along the pallet storage movably in the vertical and that the pallet storage is equipped with a pallet change arrangement as well as a single-part feeder for the automatic feeding of single sheets to the production machine.
High multi-tier shelves for the support of stacks of sheet metal carried by pallets are known. It is also known how to array transport means adjustable lengthwise and transversely as well as in elevation with such high multi-tier shelves. However, it is not known how to arry such tall multi-tier shelves, which in the case of the invention exhibit more of a columnar shape at a given distance ahead of a production machine, in order to take the pallets and/or stacks of sheet metal on the side away from the production machine and to place them into the high multi-tier shelf, while on the side facing the production machine the loaded pallets are removed from any tier of the high multi-tier shelf by the action of the transport means in the sense of the invention and brought into a position where the automatic feeding of single sheets to the production machine can take place.
A distinct advantage of the invention lies in the fact that the production machine need not be extensively modified in order to accomodate the production system.
In accordance with the invention, there is provided a single-item feed device having suction heads movably guided horizontally and vertically which acts upon the sheet metal surface. The feed device has the capability of always lifting the topmost sheet in the stack and feeding it to the production machine.
According to the invention, an important aspect lies in use of a transport means exhibiting on the side away from the production machine a support table for the metal sheets with elements which induce sliding, and whose support plane, in the transfer position of the transport means lies above the intake plane of the production machine. For the purpose of connection to said intake plane, the support table is capable of changing position. Thereto it is recommended that the support table for the sheet metal on the transport means is pivotable about an axis disposed above the intake plane, and is equipped with an oscillating drive. Thus the capability is attained of moving the metal sheet topmost at the moment along the sheet metal support table forward over such distance that upon slewing of said table a sliding movement of the metal sheet into the production machine can occur automatically because of gravity.
The particular problem of the invention resides in the capability to separate the several metal sheets of the sheet metal stack from one another. It is a fact that normally metal sheets are provided on their sur
REFERENCES:
patent: 4024963 (1977-05-01), Hautau
Werkstatt und Betrieb; 117 (1984) 10; Oct. 1984; M. Benzinger, "Flexible Automatisierte Fertigung ebener . . . "; pp. 641-646.
Tooling & Production; Jan. 1985; Flexible Fabricating Punches Up Productivity"; pp. 77-79.
Dubno Herbert
Kleindienst GmbH
Paperner Leslie J.
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