Conveyors: power-driven – With means to facilitate working – treating – or inspecting... – Means engaging conveyor or load on a conveyor to align load...
Reexamination Certificate
1999-09-29
2001-12-04
Hess, Douglas (Department: 2167)
Conveyors: power-driven
With means to facilitate working, treating, or inspecting...
Means engaging conveyor or load on a conveyor to align load...
C198S465100, C198S465200
Reexamination Certificate
active
06325199
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to improved solutions for conveying electric machine components (e.g., armatures or stators for electric motors, generators, or alternators) between different processing stations and between machines of the same processing station of a manufacturing line.
Manufacturing lines that use pallet conveyor apparatus are known. For example, the disposition of processing stations along such lines, the sequence with which the pallets reach the stations, and the transport routes by which the pallets reach the stations have been described in Santandrea et al. U.S. Pat. No. 4,984,353, which is hereby incorporated by reference herein.
A component of a dynamo-electric machine (e.g., the armature or stator being made) is often carried along the manufacturing line by a conveyor apparatus while mounted on a pallet, which may carry one or more such components. The pallet can be encoded in a known way with information regarding the condition of the component or components it is carrying. The encoded information can include an identification of the processing steps to be performed, the status of each step, whether the component should be rejected, etc. The information can be encoded magnetically, electronically, mechanically, or electromechanically, and a suitable reading device is provided adjacent each processing station to read the information. When a manufacturing line or processing station includes a plurality of routes, pallets are usually transferred between the routes as necessary. Pallet transfer should be simple and reliable, but should not interfere with the information encoded on the pallet. Moreover, a pallet should be able to convey different size components along the manufacturing line.
Some manufacturing lines include processing stations with two or more machines that perform the same function (e.g., winding). Two or more machines may be needed at a single processing station to avoid a “bottleneck” when the processing time of a machine is longer than the processing time required by other machines or stations of the same manufacturing line. Transfer between machines of a single station, however, can be mechanically complicated and expensive to manufacture and maintain. Moreover, conventional transfer apparatus can consume substantial floor space, making it difficult for an operator to gain access to components and machines of a processing station.
It is therefore desirable to provide a mechanically reliable conveyor apparatus that provides an operator easy access to components and machines of a processing station.
In view of the foregoing, it is an object of this invention to provide a solution for the problems associated with conveying and transferring dynamoelectric machine components in a manufacturing line.
It is another object of this invention to provide a reliable pallet conveyor apparatus that accommodates a large number of pallets, each of which can accept multiple size components.
It is yet another object of this invention to provide a pallet conveyor apparatus that provides an operator easy access to components and machines of a processing station along a manufacturing line.
It is still another object of this invention to provide a pallet conveyor apparatus that can transfer pallets between different manufacturing lines, including compact, vertically stacked manufacturing lines, without complicated transfer apparatus.
SUMMARY OF THE INVENTION
These and other objects of the invention are accomplished in accordance with the principles of the invention by providing a pallet conveyor apparatus that includes a plurality of pallets, at least one substantially horizontal rail structure, at least one loop-shaped conveyor belt, and a drive for causing the conveyor belt to move on an upper track of the rail structure along the rail structure's length.
Each of the pallets includes a platform having an upper surface adapted to at least partially support a component, and a seat portion having a substantially inverted “U” shape. The seat portion of the rail structure has a central surface and two opposing surfaces. The opposing surfaces have a first height and are separated by a first distance.
The rail structure has a length, an upper track, and two side surfaces. The side surfaces have a second height and are separated by a second distance. The first distance is larger than the second distance so that the rail structure can fit between a pallet's opposing surfaces. Also, the first and second heights are sufficient to prevent pallets from falling off the rail structure.
The conveyor belt has an inner belt surface and an outer belt surface. The inner belt surface is at least partially disposed on the upper track of the rail structure and the outer belt surface at least partially engages a central surface of a pallet. The drive, which may be an electric motor, for example, causes the conveyor belt to move along the upper track of the rail structure, thereby causing pallets resting on the conveyor belt to be moved.
REFERENCES:
patent: 3854889 (1974-12-01), Lemelson
patent: 4042118 (1977-08-01), Schmidt
patent: 4193312 (1980-03-01), Cicognani
patent: 4237598 (1980-12-01), Williamson
patent: 4460966 (1984-07-01), Chynoweth et al.
patent: 4473883 (1984-09-01), Yoshida et al.
patent: 4712670 (1987-12-01), Burkhardt
patent: 4713883 (1987-12-01), Santandrea et al.
patent: 4768727 (1988-09-01), Sandandrea et al.
patent: 4815673 (1989-03-01), Wheeler et al.
patent: 4892186 (1990-01-01), Frei
patent: 4981207 (1991-01-01), Kuikka
patent: 5441146 (1995-08-01), Ziegler
patent: 5503264 (1996-04-01), Eberle
patent: 5518105 (1996-05-01), Richard et al.
patent: 5715585 (1998-02-01), Zachau et al.
patent: 6112886 (2000-09-01), Horn
patent: 682 069 A (1993-07-01), None
patent: 94 16 155 U (1995-08-01), None
patent: 1 261 264 A (1972-01-01), None
Ancillotti Vieri
Becherucci Raffaele
Stratico Gianfranco
Axis USA Inc.
Fish & Neave
Hess Douglas
Jackson Robert R.
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