Dispensing – With discharge assistant – With discharge volume varying means
Patent
1989-03-21
1991-05-07
Hajec, Donald T.
Dispensing
With discharge assistant
With discharge volume varying means
222368, 277226, B65D 8854
Patent
active
050129589
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to an apportioning unit for the filling of food cans with a viscous, pasty or lumpy filling material, having at least one cylinder unit which is moved past a sealing plate.
In such apportioning units for the filling of food cans with a viscous, pasty or lumpy material, assurance must be had that the sealing plate is pressed with a well-defined pressure against the lower surface of the filling cylinder so that the open end of the filling cylinder can slide along the sealing plate while emergence of the filling material between the sealing plate and the open end of the filling cylinder is, however, dependably avoided.
OBJECTS OF THE INVENTION
The object of the invention is to create an apportioning unit in which the pressure with which the sealing plate is pressed against the open end of the filling cylinder satisfies these requirements.
SUMMARY OF THE INVENTION
This object is achieved in a first embodiment of the invention by a lower part which is developed with a first passage hole for the filling material and is provided with an annular spring which is arranged concentrically to the first passage hole and by an upper part which bears the sealing plate and is developed with a second passage hole for the filling material. The upper part is provided with an annular groove which receives the annular key and is arranged concentrically to the second passage opening. The depth of the annular groove is greater than the height of the annular key and the annular groove also receives an elastic annular tube.
A second embodiment is characterized by a lower part which is developed with a first passage hole for the filling material and is provided with an annular groove arranged concentrically to the first passage hole. An upper part is provided which is developed with a second passage hole for the filling material and is provided with an annular key which is concentric to the second passage hole and engages in the annular groove. The depth of the annular groove is greater than the height of the annular key and the annular groove also receives an elastic annular tube.
It is furthermore proposed that the annular tube be filled with air.
BRIEF DESCRIPTION OF THE DRAWINGS
Other features and advantages of the invention are set forth in the claims and the specification, in which one embodiment of the invention is explained with reference to the drawing, in which:
FIG. 1 shows a sectional view of an apportioning unit according to the invention;
FIG. 2 is a view on a larger scale which shows the apportioning unit in a position in which the upper part which bears the sealing plate is pressed against the cylinder unit;
FIG. 2A is a view similar to FIG. 2 showing an alternate embodiment of the invention;
FIG. 3 is a showing corresponding to FIG. 2, with the upper part lowered; and
FIG. 4 is a showing corresponding to FIGS. 2 and 3, with a defective tube.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
FIG. 1 shows an apparatus for the filling of food cans with a viscous, pasty or lumpy material which consists of a lower part 12, an upper part 18, and a plurality of filling cylinders 24 which are moved past a sealing plate 22.
The filling cylinders 24 are provided with sealing flanges which slide over the sealing plate 22, each filling cylinder 24 receiving, upon each filling process, an amount of filling material which is to be subsequently introduced into a food can.
In order to permit a dependable transfer between the upper part 18 of the apportioning unit and the filling cylinder 24, the sealing plate 22 must be pressed with a suitable pressure against sealing flanges 26 of the filling cylinders 24. This pressure must be great enough so that no filling material emerges between the sealing plate 22 and the sealing flange 26. On the other hand, this pressure must also not be too great, since it must be assured that sliding between the sealing flanges 26 and the sealing plate 22 be readily attained.
In order to permit the application of the sealing plate against
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Gideon Jurgen
Krieger Dieter
Mengel Eirch
EFFEM GmbH
Hajec Donald T.
Huson Gregory L.
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