Fluent material handling – with receiver or receiver coacting mea – Processes – Battery grid pasting
Patent
1992-05-05
1994-05-10
Recla, Henry J.
Fluent material handling, with receiver or receiver coacting mea
Processes
Battery grid pasting
141 83, 141266, B65B 104
Patent
active
053099559
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a process and a device for adjusting the quantities of product dosed and dispensed by a doser-dispenser, for foodstuffs or pharmaceuticals, the product preferably being in a liquid and/or pasty state.
FIELD OF THE INVENTION
The present invention is particularly applied to a doser-dispenser of the type comprising, in a first cylindrical enclosure, on the one hand, an upper supply chamber connected by a supply conduit to a first reservoir for storing the product and, on the other hand, a lower dosing chamber, a doser-piston which slides tightly in said first enclosure and separates said supply chamber from said dosing chamber and which comprises a central passage constituting the seat for an obturation flap of an admission valve opening in the direction of the supply chamber, a first control tube penetrating tightly into said first enclosure in which it is fixed to the doser-piston and outside which it is fixed to the piston of a first control jack whose cylinder is mounted on a support of said first enclosure, the doser-dispenser further comprising a second control tube whose lower end part penetrates tightly in said first enclosure, is guided in said first control tube and is fast, at its upper end, with a piston of a second control jack incorporated in said first control tube, as well as a dispensing chamber connected, on the one hand, to the outlet of the dosing chamber and, on the other hand, to an ejection pipe adapted to be obturated by the flap of an ejection valve.
BACKGROUND AND PRIOR ART
This type of doser-dispenser is described in Patent Application FR 89 06316 of 12.5.1989 and in Patent Application EP 90401252 of 15.5.1990 to which reference may be made for greater details.
In an installation for packing a liquid and/or pasty product in receptacles or recipients made by thermoforming a thermoplastic web, a plurality of juxtaposed doser-dispensers are used, in a row extending transversely with respect to the direction of advance of the thermoplastic web containing successive transverse rows of recipients parallel to that of that of the row of doser-dispensers and advancing step by step with the web in the direction of advance thereof.
These doser-dispensers are, like others (cf. for example French Patent 2 067 983), volumetric dosers which dispense determined quantities of product for a given product density. It frequently happens that the density of the product varies locally by some percent, with the result that the weight of the quantities of product dosed volumetrically and dispensed in the corresponding recipients differs beyond the allowed limits from the theoretical weight inscribed on said recipients. In order to eliminate the most important differences in weight, a filled recipient is weighed at regular intervals and its weight is compared with a standard recipient. When the difference in weight thus ascertained exceeds a limiting value, the stroke of the doser piston of each of the doserdispensers is readjusted as a function of the difference in weight. Such readjustment obviously requires that the whole installation be stopped, resulting in a loss of productivity.
In another installation disclosed in German Patent 3 510 110, the quantity dosed by the doser is checked from time to time, by diverting the dosed quantity from its normal discharge into a packaging recipient to a standard recipient disposed on precision scales whole output signal corresponding to the measured weight of said deviated dosed quantity is sent to the input of a computer such as a micro-processor. The signal corresponding to the measured weight of the dosed quantity is compared in this computer with a standard signal corresponding to a given weight. If there is a difference between the two signals, the computer emits a correction signal to modify the stroke of the piston of the doser in the sense of bringing the octal weight of the dosed quantity closer to the standard weight. During the process, the packaging recipients are not filled and transport of the recipients and actu
REFERENCES:
patent: 3744538 (1973-07-01), Nasica et al.
patent: 4164244 (1979-08-01), Meier
patent: 4467844 (1984-08-01), Di Gianfilippo et al.
patent: 4767031 (1988-08-01), Proepper
patent: 4917158 (1990-04-01), Lingenhoff
patent: 5027983 (1991-07-01), Wakabayashi et al.
patent: 5145009 (1992-09-01), Mheidle et al.
Search Report for PCT/FR91/00614.
ERCA Holding
Recla Henry J.
Walezak David J.
LandOfFree
Process and device for adjusting the quantities of product dosed does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and device for adjusting the quantities of product dosed, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for adjusting the quantities of product dosed will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2409005