DD207822A3 - METHOD AND DEVICE FOR DOSING STUECKGUT - Google Patents

Abstract

BASED ON THE TASK - CREATING A METHOD AND A DEVICE FOR MINIMIZING THE NUMBER OF SINGLE ASSUMPTIONS ACCORDING TO THE ARTICLE SIZE OR APPARATUS. ARTICLE WEIGHT AND COMPENSATION OF FEHLEREINFLUESSE THE individual weighing - BECOME piece cargo IN A SUPPLY DEVICE IN EINZELSTUECKSPUREN SELECTED, a selectable number of EINZELSTUECKSPUREN EACH GROESSENGESTAFFELTEN EINZELWAEGEEINRICHTUNGEN fed, FROM A COMPUTER THE COMBINATION OF SINGLE COMPOUNDS OF piece cargo TO WHICH PREVIOUSLY GIVEN TOTAL GROUND NEAR COMING, MADE IN TO THE COMBINATION STUECKGUETER TO A TOTAL WAITING APPROVAL AND TO THE ADMISSIBILITY OF THE TOTAL MEASURE OF A PACKAGING DEVICE.

Description

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! experienced and device for dosing of general cargo

· -> Application area

The invention relates to a method and a device for metering general cargo, in particular fruit,

Characteristic of the known technical solutions

Bs are known metering devices (DS 294-9781), the filter using a Eechners of a given number of weighing devices weighed article by article combination, a smaller A n l zah this article so that it '. , possibly approaching a given mass, whereby it is possible to produce packages with a target weight while maintaining a predetermined tolerance. A disadvantage of this device, since £, due to different size of the article and thus different numbers of items per pack, a variety of weighing must be present. The number of possible combinations increases suddenly with the number of scales, which makes high demands on the computer in terms of labor costs (time and volume). Furthermore, the weighing devices must work very accurately in dependence on the allowable tolerance in order to keep the sum error of the entire device smaller than the allowable tolerance. . ' - Due to the high sum error of the individual weighings

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When assembling packages into larger units, for example pallets with a given total mass, high errors are to be expected or a separate overall weighing of the pallets with corresponding corrections, which undesirably leads to a different number of packs of pallets, is to be carried out.

Object of the invention

The aim of the invention is to increase the variability of the device while minimizing the technical complexity and increasing the accuracy even when assembling the packages into larger units.

Object of the invention

The object of the invention is to provide a method and a device for the metering of piece goods, in particular fruit, while minimizing the number of individual weighings according to the article size or article mass and compensation of the 3 ¶hlerseinflÜsse the individual weighing.

Essence of the invention. .

Eriindungsgemäß the object is achieved by the process side that the piece goods selected in a supply device in Einzelstückspuren, a selectable number of Binzelstückspuren each size staggered individual weighing fed from a lechner the combination of individual masses of the piece goods, which comes close to a predetermined total mass, formed in the goods contained in the combination zu.einer Gesamtweägeeinrichtung and the permissibility of the total mass of a Yerpackungseinrichtung be supplied. ·

The of the. ' Total weighing device as inadmissible combination of piece goods is fed back to the dosing process. For tendentious deviation, i. H. If the total mass is exceeded or fallen short of, the number of individual items is changed to one or more individual weighing units.

directions. For tendentious deviation, i. If the total mass is over- or under- graded, a compartment adjustment of one or more individual weigh- in units will be carried out.

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According to the invention, this object is achieved by the device. solved that the supply device is provided with adjustable webs, the individual weighing devices designed to accommodate a predetermined number of piece goods and the individual weighing devices via a discharge device and a transport downstream subordinate weighing and this one- Eüclsführeinrichtung and

a packaging device is arranged downstream. ,

The large scale of the weighing device is 5: 3: 2: 1: 1: 1. The Sechner is designed to carry out the following operations:

- Forming of the intended total mass approaching total mass of the combination of individual masses and activation of the supply and discharge devices from and to the corresponding Einzeljnassen containing individual weighing facilities or blocking the Za and Abführeinrichtungen from and to the Binzelwägeeinriehtungen not involved in the combination of Sinzelmassen ~

- "Comparison of the actual total weight determined by the total weighting with the given seed mass

- Supply of the total mass to the packaging device at a permissible total mass

- Activation of the repatriation device with impermissible total mass

- Change in the number of individual tracks left on the individual weighing devices with impermissible total mass

- Adjustment of one or more individual weighing devices in case of deviations of the total mass from the permissible total mass.

embodiment

The method according to the invention is explained in more detail below using an exemplary embodiment,.

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The piece goods contained in a provisioning device are selected in single track tracks «A selectable number of Einzelstüekspuren, ge nach. Size or mass of the articles, are led to size graduated Einzelwalleninriehtungen. Sound of a computer is the combination of linzelmassen, which comes close to a predetermined total mass formed. The piece goods contained in the combination are fed to a total weighing device. If the total mass is admissible, the total mass lies within the tolerance limits of the total nominal mass, the metered mass is supplied to a packing unit.

If the actual total mass lies outside the tolerance limits, the metered mass is returned to the metering process. In case of biased deviations of the actual total mass, a change of the single-track tracks to one or more individual weighing devices or a technical adjustment of one or more individual weighing devices takes place.

Subsequently, the device according to the invention will be explained in more detail using an exemplary embodiment.

The drawing shows the metering device according to the invention. for general cargo.

The metering device contains a supply device 1 with individual side by side, adjustable in number and arrangement webs 3, are arranged in the piece goods 2. The supply device 1 are arranged downstream juxtaposed feed devices 4 which are movable in the direction of the arrow and which reach the, end positions A and B periodically. Similarly, Abfülir devices 5 are present, i move periodically in the direction of the arrow between the end positions B and C. Both the supply and the discharge devices are provided with locking devices, not shown, and can optionally be disabled, the control of these functions via a computer 6 takes place.

The metering device further includes juxtaposed, the discharge devices 5 upstream and the feeder en K downstream single weighing 7, the

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are directly connected to the computer 6.

The Abführeinrieiltungen 5 is über.eine transport device 8 a total weighing device 9 downstream. The total weighing device 9 is also verbun with the computer 6. The total weighing device 9 is associated with both a return device 10 and a terpacking device 11.

The mode of action of the metering device for piece goods according to the invention will be described below. ^} The articles 2, which are arranged continuously one after the other between the webs 3, are handed over to the individual weighing devices 7 by means of feeders 4 and the determined masses are transmitted to the computer 6. The masses are combined to form overall masses which come as close as possible to a given total mass.

From the large number of possible combinations, the computer 6 selects the most expedient, ie, the one with the smallest deviation from the predefined total mass, and activates the corresponding removal devices 5, which transfer the articles contained in the combination to a transport device 8. The articles not contained in the combination remain on the corresponding single weighing devices, since the corresponding discharge devices 5 have been blocked *

It is ensured that the respective discharge device 5 corresponding feeder 4 only then feeds additional Article 2, if the corresponding SinzelwägeeinricJa-. 7 was emptied. .

The adjustment of the webs 3 & ez providing device is made in accordance with the frequency distribution of the articles in terms of mass so that it gives the largest possible number of combinations within an expected frequency. The supply and discharge devices arranged downstream of the provisioning device 1 as well as the single-weight weighing device are scaled according to the web position. Preferably, the graduation of the sizes takes place in the ratio.

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$: 3i2i1i1: 1j d · h. For example, the first individual weighing device can accommodate one to five articles. About the transport device 8, the metered mass passes to Gesajstwägeeinrichtung 9 »which determines the actual total mass« This total mass is transmitted to the computer 6, which compares the actual total mass with the target total mass.

If the actual total mass is within the tolerance limits of the total target mass, the metered mass is transported to the Yerpackungseinrichtung 11. If the actual total mass is not within the tolerance limits of the desired total mass, the metered mass za of the return device 10 is transported and thus fed back to the metering process, if there are tendentious deviations from the total target mass, a change occurs in the number of single piece spurs to one or more single weighing devices or In addition, according to the invention, by evaluating the total weighings over longer periods by means of computer 6 balances (hourly, iEages- !, lonatsleistungen) made and characteristic values (standard deviation, .Maximal-, minimum values, mean values, frequency distributions) determined.

Claims (5)

L * U VJ U 1. A method for dosing piece goods, characterized in that the piece goods in a supply device in Sinzelstückspuren selectively ± er, a selectable Any.hii of Einzelstückspuren each size staggered ) Sinzelwägeeinrichtungen supplied from a Eechner the combination of individual masses of the piece goods, the one previously determined overall mass, formed, the pieces of goods contained in the combination are delivered to a total weighing device and, if the total mass is permissible, to a packaging device · ₍ 2. Method according to item 1, characterized in that the combination of piece goods recognized as inadmissible by the total weighing device is returned to the dosing process. 3. The method according to item 1, characterized in that at. tendentious deviation from the total mass, a change in the number of single piece tracks to one or more individual weighing facilities is made. 4. The method according to item 1, characterized in that at biased deviation of the total mass a Hachgustierung one or more individual weighing facilities is made. ' 5 · Dosing device for ⁷ general cargo with a provisioning. device, (Eransporteinrichtiingen, Einzelwägeeinrichtungen and a Hechner, characterized in that the provision device (1) with adjustable Ste. <. Gen. (3) is provided for selection in Einzelstückspuren, the Sinzelwägeeinrichtungen (7) .To receive a 'pre-determined number formed by piece goods (2) and the individual weighing means (7) via a Abführeinriehtung (5) uj2d transport device (8) is assigned a downstream e Gesaatwägeeinrichtung and this a return device (10) and a packaging device (11).