Conveyors: power-driven – Conveyor section – Reciprocating conveying surface
Reexamination Certificate
1999-06-15
2001-04-10
Kramer, Dean J. (Department: 3652)
Conveyors: power-driven
Conveyor section
Reciprocating conveying surface
C193S023000
Reexamination Certificate
active
06213291
ABSTRACT:
This invention relates to a vibration conveyor as used in a variety of embodiments for conveying small parts. Vibration conveyors of this type work on the principle that a spiral or circular-shaped track is made to vibrate, with the movement essentially comprising a horizontal and a vertical component. The material to be conveyed may be small parts made of highly varied materials, which have to be e.g. sorted, inspected, cleaned and filled into drums as part of a production process. Sorting pots driven in this manner cause the small parts inside to move around the edge of the sorting pot, with only those small particles that find themselves in a certain position being able to negotiate a corresponding sorting passage, whilst the others fall back into the sorting pot. Another special version of a vibration conveyor serves to simultaneously smooth and remove dust from pharmaceutical products such as tablets or pills. Vibrations conveyors of this type are fitted with a drive unit consisting of an electromagnet to which alternating voltage is applied. On top of the electromagnet there is a vibration plate, to which the parts of the vibration conveyor that are to be made to vibrate are securely attached. On the opposite side of the electromagnet there is a suspended complementary vibration plate, on which the electromagnet is vertically adjustably attached, with the vibration plate and the complementary vibration plate being elastically connected to each other. This elastic connection can consist, for example, of leaf spring sets disposed at an oblique angle to the winding axis of the electromagnet so that when the vibration plate is made to vibrate, it receives both a vertical and horizontal vibration component. The base construction is connected to the vibrating part solely by means of the vibration nodes of the leaf spring sets, and so the base construction remains stationary in operation and is not exposed to any vibration.
Such prior art vibration conveyors have a dispensing chute through which the conveyed parts fall into a drum. In practice, the drum is placed under the dispensing chute on a weighing device and filled up until the target weight is achieved, or the drum is filled up to a visual level indicator mark. The vibration conveyor is then switched off, or the dispensing chute is blocked until a new, empty drum can be positioned. Sometimes, several drums are arranged next to each other and a swivelling funnel device into which the small parts fall as they leave the dispensing chute is moved by hand from one drum to the next as each drum fills up with the vibration conveyor in operation all the time. After filling a number of drums, e.g. enough to load on a pallet, the vibration conveyor has to be switched off, the pallet with the full drums has to be removed, and another pallet with empty drums repositioned under the dispensing chute. With the increasing automation of the process of transferring small parts to containers it would be preferable to organize the filling up of individual drums without any manual intervention.
Hence it is the task of this invention to provide a vibration conveyor with a device for automatically filling up several containers.
This task is solved by a vibration conveyor with a spiral or circular-shaped conveyor channel which can be made to vibrate by means of an electromagnet under alternating voltage and whose end opens out into a dispensing chute, it being characterized in that the dispensing chute is contrived as a distribution gate which comprises a dispensing channel that can be moved to and fro around a pivot axis by an electric motor, with mechanical and electrical control means for guiding the dispensing channel to different positions in line with a control program.
An advantageous embodiment of this vibration conveyor with distribution gate is illustrated in the drawings; it will be described below with reference to these drawings, and the function of the individual parts will be explained and commented on.
REFERENCES:
patent: 767713 (1904-08-01), Raygor et al.
patent: 789135 (1905-05-01), Baggaley
patent: 2799378 (1957-07-01), English
patent: 2842242 (1958-07-01), Patterson
patent: 3827578 (1974-08-01), Hough
patent: 4347922 (1982-09-01), Curry et al.
patent: 5024320 (1991-06-01), Musschoot
patent: 5931286 (1999-08-01), Illi
patent: 0549533 (1993-06-01), None
patent: 2537638 (1984-06-01), None
patent: 1356579 (1974-06-01), None
patent: 9626873 (1996-09-01), None
Kramer Dean J.
Kramer AG Bassersdorf
Schindler Edwin D.
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