GB2151800A - Automatic weighing of bulk materials or fluids - Google Patents
Automatic weighing of bulk materials or fluids Download PDFInfo
- Publication number
- GB2151800A GB2151800A GB08431827A GB8431827A GB2151800A GB 2151800 A GB2151800 A GB 2151800A GB 08431827 A GB08431827 A GB 08431827A GB 8431827 A GB8431827 A GB 8431827A GB 2151800 A GB2151800 A GB 2151800A
- Authority
- GB
- United Kingdom
- Prior art keywords
- receptacle
- weighing out
- handling device
- fluid
- dosing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005303 weighing Methods 0.000 title claims abstract description 44
- 239000012530 fluid Substances 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000000151 deposition Methods 0.000 claims abstract description 4
- 239000013590 bulk material Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000000470 constituent Substances 0.000 description 12
- 239000000654 additive Substances 0.000 description 10
- 230000000996 additive effect Effects 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 238000009434 installation Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/22—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them
- G01G19/38—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for apportioning materials by weighing prior to mixing them programme controlled, e.g. by perforated tape
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
- G01G13/04—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism involving dribble-feed means controlled by the weighing mechanism to top up the receptacle to the target weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/24—Weighing mechanism control arrangements for automatic feed or discharge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Basic Packing Technique (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
A method for weighing out bulk materials or fluids is carried out by means of a handling device 4, preferably in the manner of an industrial robot, which executes the necessary operation steps such as, for example, placing the receptacle 16 for the material or fluid in readiness, actuation of the dosing element 18 for feeding the material or fluid with and without loosening mechanisms and/or closures, weighing out the filled receptacles and the marking and depositing thereof in accordance with a calculated plan. The weighing out mechanism is an integral component part of the handling device 4 and preferably the drive 11, 12 for dosing elements, loosening mechanisms 19, 21 and other drivable components is carried along therewith. <IMAGE>
Description
SPECIFICATION
Method for automated weighing out of bulk materials and/or fluids This invention relates to a method for the automated weighing out of bulk materials and/or fluids. Such methods are required for example in the rubber industry for the preparation of raw material mixtures according to particular prescription by also putting together different weights of several or many additive substances. In such a method the additive substances should be prepared in readiness as prescribed and in the correct sequence, and sources of error occurring through incorrect weighing out cycles are to be identifiable and eliminated.
It is known that the weighing out of small mounts of minor constituents is still carried out by hand in the rubber industry. Here, the staff fill bags, placed on scales, with scoops which are lying in readiness in storage containers holding the constituents.
Essential disadvantages which have been found in this method are that the contents of the bag can be interchanged, the weighing out tolerances are exceeded, and additive substances which are not compatible with each other are mixed because of contamination of the work place. It is also possible to mark the bags incorrectly.
These disadvantages led to the semi-automatic weighing out of minor constituents, in which through recording receipt by means of push buttons on a calculating machine, monitoring calculations are carried out by totalling the sums, whereby all the sources of error through weighing out by hand which have been described, with the exception of unintentional exceeding of tolerances, are still possible.
In the journal "Rubber and Plastics News" of 21st November1983, pages 16 and 17, the principle of a fully automatic weighing out of minor constituents is shown for the first time, and is intended to preclude incorrect weighing out by hand. A chain bucket conveyor with receiving containers runs between two rows of minor constituent containers. A weighing out mechanism and dosing elements with drives are allocated to each minor constituent container. Under computer control, the chain buckets are filled in a sequence that is provided for by a prescription for the raw material mixture. The chain bucket conveyor transports the filled containers to the mixer.However, it is evident that an installation of the type of construction described becomes very expensive through the numerous weighing systems, dosing elements and drives for these, and is scarcely suitable for the charging of several mixers with differing and changeable prescription requirements, because the conveyor chains is of rigid construction.
In addition, each container may be loaded with differing additive substances through which, here too, there is a risk of undesired mixtures of material.
It is an object of the present invention to reduce or eliminate the possibilities for error which have been indicated, and drastically to reduce the constructional resources for a weighing out installation. According to the present invention there is provided a method for the automated weighing out of bulk material and/or fluids, where the operating steps necessary for weighing out are carried out in accordance with a predetermined programme. Preferably, the steps include placing a receptacle for the material or fluid in readiness for receipt of the receptacle, actuation of the dosing elements for feeding the material or fluid, weighing out and closing the receptacle when filled and the marking and depositing of the filled receptacle using a computer-controlled handling device, preferably in the manner of a so-called industrial robot.In order to arrange the weighing out according to this method so as to be even more favourable in cost, the handling device for the retrieval of additive substances from as many raw material containers as desired may increase its operating span in that it is mounted so as to be stationary or movable on a chassis, which carries along with it a receptacle dispenser, a weighing out mechanism for a receptacle, a receptacle closing and marking device and receptacle deposit.A particularly efficient weighing out is achieved if the weighing out of the filling receptacles is carried out through the corresponding design of a gripper on the handling device, combined with a weighing out mechanism, i.e. the weighing out mechanism forms an integral component part of the handling device, and if, in a further embodiment of the invention, the handling device has one or more driving members which are able to be coupled to stationary dosing elements, which may be supplemented by loosening mechanisms and/or closures. If the dosing elements, which may also be different in construction, size and performance, are fixedly associated to the corresponding raw material containers, an undesired mixing of different additive substances is entirely precluded.
At the same time, through the fact that in an expedient further embodiment of the invention the driving member o-r members can be controlled and regulated according to a calculated plan as regards their performance, rotational speeds and/or paths, in a way which is extremely favourable in terms of cost for example a single drive source may also be used for all the dosing elements, also with lossening mechanisms and/or closures. If, finally, the handling device itself has dosing elements in addition to associated driving members, which are able to be left off as required in the manner of a tool exchange, the number of the dosing elements may also be reduced.
By means of the present apparatus it may be firstly ensured that the receptacles are filled with the additive substance which a particular prescription requires. A process control provides for the bringing up and coupling on of the handing device on to the constituent container which is filled accordingly.
Errors in weighing out are practically precluded by the possible successive adjustments of the dosing element movements for, for example, coarse dosing, fine dosing and superfine dosing. Incorrect weighing out operations through different dosing behaviour of additive substances, which occurs on rare occasions, are measured in a manner known perse with computer assistance, and result in the respective receptacles being eliminated. The subsequent closing of the receptacles and the marking are likewise automated ånd may be carried out in a manner known parse. Essential advantages of the invention are to be seen in addition in the avoidance of faulty charges, lowering of costs by the high weighing out speed and the prevention of operating staff from coming into contact with toxic additive substances.
In order to enable the invention to be more readily understood, reference will now be made to the accompanying drawings, which illustrate diagrammatically and by way of example an embodiment thereof, and in which:
Figure 1 is a side view of a machine installation for weighing out bulk materials, and
Figure 2 is a plan view of the installation shown in
Figure 1.
Referring now to the drawings, there is shown a weighing installation in which a wheeled chassis 2 carrying a chassis platform 3 is movable along a track in the form of a pair of rails 1. A handling device 4 is mounted on the chassis platform 3, and consist of the rotable column 5 with a main arm 6, a rotatable fork 7 and an auxiliary arm 8. The rotatabie fork7 is rotatably mounted on the main arm 6 by means of a fulcrum pin 9 and the auxiliary arm 8 is rotatably mounted by means of a bearing 10 on the rotatable fork 7. The auxiliary arm 8 carries a drive motor 11 with a drive shaft 12, the motor being controlled in accordance with a predetermined programme, as well as a torsion spring 13 with weighing arm 14 and receptacle gripper 15, a bag 16 being the receptacle in this embodiment.A bag 16 which is to be filled is held, in accordance with the prescription requirement, under the filling nozzle 17 of a dosing element 18, e.g. a dosing screw. The dosing element 18 and a loosening mechanism 19 are associated with a container 20 for the constituent which is to be weighed out. A shaft 21 of a loosening mechanism is connected by a toothed belt 22 to the shaft 23 of the dosing element 18. Two supports 25 are mounted on the frame 24 of the constituent container 20 and two support pins 26 are attached to the auxiliary arm 8 as two counterparts to the support 25.
At the beginning of a weighing out process, the bag gripper 15 removes a bag from a bag dispenser 27 known parse. The handling device 4 positions the bag under the filling nozzle 17, whilst introducing the two support pins 26 into the supports 25. At the same time the drive shaft 12 couples onto the shaft 23 of the dosing element 18. The programmecontrolled drive motor then drives the dosing element and the connected loosening mechanism, wherebythe bag is filled, the provision ofthetorsion spring 13, enabling a vibration-free weighing out to be achieved. The drive is adjusted in accordance with the design of the dosing element and the rotational speeds are determined as a function of the quantity being weighed out, for coarse dosing, fine dosing and superfine dosing.Through this all the different weighing out quantities which may occur within the weighing range or ranges of the integrated weighing out mechanism, e.g. from a few hundred grams to several kilograms, are individually regulated and carried out at optimum settings in the shortest time. If the bag is filled and an incorrect excess weight is found, the bag is either emptied back directly through a corresponding incorrect charge opening 28 into the constituent container 20 or, particularly in the case of incorrect weighing out operations of a second additive substance into the same bag, is deposited in isolation. With a filling weight within the tolerance thresholds, the filled bag is carried by the handling device to a bag closing and marking device 29 known perse and is closed and marked there.The bag dispenser 27 and bag closing and marking device 29 are carried along on the chassis platform 3 and may also be present several times to avoid unnecessary pivoting periods. The depositing of the filled bags may take place onto pallets 30, which are carried along on the chassis platform 3, according to pre-determined placing. In the embodiment under discussion, the pallets 30 only serve to receive incorrect weighings out, and the correctly weighed out and filled bags which are released are placed on a conveyor system 31, which is necessarily computer-controlled in accordance with the prescription and the method, and is possibly reversible, in order to prepare an automatic furthertransportion with precisely defined bag positions.
In the embodiment described, the constituent containers are arranged in a straight line in one row.
In other embodiments the constituent containers may be arranged in accordance with the space available, in two rows, curved and even arranged one above the other:
Claims (9)
1. A method for the automated weighing out of bulk material and/or fluid, wherein the operating steps necessary for weighing out are carried out in accordance with a predetermined programme.
2. A method as claimed in claim 1,wherein said steps include placing a receptacle for the material or fluid in readiness, receipt, of the receptacle, actuation of dosing element(s) for feeding the material or fluid, weighing out and closing receptacle when filled, and marking and depositing the filled receptacle using a computer-controlled handling device.
3. Apparatus for carrying out the method claimed in claim 1, wherein the apparatus comprises a handling device which is mounted so as to be stationary or movable on a chassis, which carries along with it a receptacle dispenser, a weighing out mechanism for a receptacle, a receptacle closing and marking device and receptacle deposit.
4. Apparatus as claimed in claim 3, wherein the weighing out mechanism forms an integral component part of the handling device.
5. Apparatus as claimed in claim 3 or 4, wherein dosing elements for feeding the material or fluid are supplemented in a manner known perse by loosening mechanisms and/or closures.
6. Apparatus as claimed in any one of claims 1 to 5, wherein the handling device has one or more drive members which are able to be coupled to stationary dosing elements, loosening mechanisms and closures.
7. Apparatus as claimed in claim 5, wherein the drive member or members are able to be controlled and regulated according to a calculated plan as regards their performance, rotational speeds and/or paths.
8. Apparatus as claimed in any one of claims 3 to 5, wherein the handling device has dosing elements in addition to associated drives, which are able to be removed if required.
9. Apparatus for the automated weighing out of bulk material and for fluid substantially as hereinbefore described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3346102A DE3346102C2 (en) | 1983-12-21 | 1983-12-21 | Device for automated weighing |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8431827D0 GB8431827D0 (en) | 1985-01-30 |
| GB2151800A true GB2151800A (en) | 1985-07-24 |
| GB2151800B GB2151800B (en) | 1987-05-20 |
Family
ID=6217499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08431827A Expired GB2151800B (en) | 1983-12-21 | 1984-12-17 | Automatic weighing of bulk materials or fluids |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE3346102C2 (en) |
| GB (1) | GB2151800B (en) |
| IT (1) | IT1179529B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0287708A2 (en) * | 1987-04-22 | 1988-10-26 | Color Service Srl | Automatic weighing plant for powdery products |
| EP0295035A2 (en) * | 1987-06-08 | 1988-12-14 | Ngk Insulators, Ltd. | Apparatus for weighing powder material |
| FR2655092A1 (en) * | 1989-11-24 | 1991-05-31 | Vilbert Bernard | OPEN PERISTALTIC PUMP WITH DECOUPLABLE ROTOR FOR PERFUMER ROBOT. |
| EP0446398A1 (en) * | 1990-03-16 | 1991-09-18 | Ching Fu Kuan | Automatic metering and dispensing system for powder material |
| EP0516573A1 (en) * | 1991-05-31 | 1992-12-02 | Solignac Industries | Peristaltic pump device for automatically sampling, weighing and mixing various liquids |
| US5597094A (en) * | 1992-12-03 | 1997-01-28 | Solignac Industries S.A. | Device with peristaltic pump which makes it possible to draw, weight and mix liquids automatically |
| US7996107B2 (en) | 2000-10-06 | 2011-08-09 | Chemspeed Technologies Ag | Device having a tool holder, a tool and a balance |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3818637A1 (en) * | 1988-06-01 | 1989-12-21 | Azo Gmbh & Co | DEVICE FOR COMBINING GIANT MATERIAL COMPONENTS TO A MIXTURE |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB907136A (en) * | 1958-10-22 | 1962-10-03 | Parker Ltd Frederick | System controlling the preparation of mixtures of bulk materials |
| GB970778A (en) * | 1962-03-22 | 1964-09-23 | Pierre Escoffier | Improvements in or relating to automatic weighing devices |
| GB983847A (en) * | 1960-11-24 | 1965-02-17 | Elba Werk Maschinen Gmbh & Co | Apparatus for batching and weighing pourable materials |
| GB1184666A (en) * | 1966-07-28 | 1970-03-18 | Euclid Crane And Hoist Company | Load Transfer and Storage Mechanism. |
| GB1308755A (en) * | 1970-03-03 | 1973-03-07 | Hesser Ag Maschf | Arrangement for discharging measured quantities of powdered or granular filling materials into packaging containers |
| GB2028518A (en) * | 1978-08-16 | 1980-03-05 | Fata Fab App Sollevamento | Proportioning mixtures by weight |
| GB2046455A (en) * | 1979-03-31 | 1980-11-12 | Buehler Miag Gmbh | Method and plant for automatically forming batches of raw rubber |
| GB2062706A (en) * | 1979-10-02 | 1981-05-28 | Schubert & Salzer Maschinen | Method and apparatus for opening and mixing fibre bales |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3272347A (en) * | 1963-01-14 | 1966-09-13 | Jerome H Lemelson | Article manipulation apparatus |
| DE2943351A1 (en) * | 1979-10-26 | 1981-05-07 | Meyer Maschinen- und Wiegeapparatebau GmbH & CO KG, 5202 Hennef | Preparation and weighing out of small material quantities - uses dosing containers cooled for correct magazine insertion |
-
1983
- 1983-12-21 DE DE3346102A patent/DE3346102C2/en not_active Expired
-
1984
- 1984-12-17 GB GB08431827A patent/GB2151800B/en not_active Expired
- 1984-12-21 IT IT24225/84A patent/IT1179529B/en active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB907136A (en) * | 1958-10-22 | 1962-10-03 | Parker Ltd Frederick | System controlling the preparation of mixtures of bulk materials |
| GB983847A (en) * | 1960-11-24 | 1965-02-17 | Elba Werk Maschinen Gmbh & Co | Apparatus for batching and weighing pourable materials |
| GB970778A (en) * | 1962-03-22 | 1964-09-23 | Pierre Escoffier | Improvements in or relating to automatic weighing devices |
| GB1184666A (en) * | 1966-07-28 | 1970-03-18 | Euclid Crane And Hoist Company | Load Transfer and Storage Mechanism. |
| GB1308755A (en) * | 1970-03-03 | 1973-03-07 | Hesser Ag Maschf | Arrangement for discharging measured quantities of powdered or granular filling materials into packaging containers |
| GB2028518A (en) * | 1978-08-16 | 1980-03-05 | Fata Fab App Sollevamento | Proportioning mixtures by weight |
| GB2046455A (en) * | 1979-03-31 | 1980-11-12 | Buehler Miag Gmbh | Method and plant for automatically forming batches of raw rubber |
| GB2062706A (en) * | 1979-10-02 | 1981-05-28 | Schubert & Salzer Maschinen | Method and apparatus for opening and mixing fibre bales |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0287708A2 (en) * | 1987-04-22 | 1988-10-26 | Color Service Srl | Automatic weighing plant for powdery products |
| EP0287708A3 (en) * | 1987-04-22 | 1990-01-10 | Color Service Srl | Automatic weighing plant for powdery products |
| US5006995A (en) * | 1987-04-22 | 1991-04-09 | Color Service S.R.L. | Automatic weighing plant for dyes in powder form |
| EP0295035A2 (en) * | 1987-06-08 | 1988-12-14 | Ngk Insulators, Ltd. | Apparatus for weighing powder material |
| EP0295035A3 (en) * | 1987-06-08 | 1990-01-17 | Ngk Insulators, Ltd. | Apparatus for weighing powder material |
| WO1991008451A1 (en) * | 1989-11-24 | 1991-06-13 | Laboratoire & Informatique | Device for automatically sampling, weighing and mixing various expensive liquids |
| FR2655092A1 (en) * | 1989-11-24 | 1991-05-31 | Vilbert Bernard | OPEN PERISTALTIC PUMP WITH DECOUPLABLE ROTOR FOR PERFUMER ROBOT. |
| EP0446398A1 (en) * | 1990-03-16 | 1991-09-18 | Ching Fu Kuan | Automatic metering and dispensing system for powder material |
| EP0516573A1 (en) * | 1991-05-31 | 1992-12-02 | Solignac Industries | Peristaltic pump device for automatically sampling, weighing and mixing various liquids |
| FR2677008A1 (en) * | 1991-05-31 | 1992-12-04 | Inf Lab | PERISTALTIC PUMP DEVICE FOR TESTING, WEIGHING AND AUTOMATICALLY MIXING LIQUIDS. |
| US5597094A (en) * | 1992-12-03 | 1997-01-28 | Solignac Industries S.A. | Device with peristaltic pump which makes it possible to draw, weight and mix liquids automatically |
| US7996107B2 (en) | 2000-10-06 | 2011-08-09 | Chemspeed Technologies Ag | Device having a tool holder, a tool and a balance |
| EP1322923B2 (en) † | 2000-10-06 | 2012-12-05 | Chemspeed Technologies AG | Device comprising a tool holder, a tool and scales |
Also Published As
| Publication number | Publication date |
|---|---|
| IT8424225A0 (en) | 1984-12-21 |
| DE3346102C2 (en) | 1986-04-03 |
| IT1179529B (en) | 1987-09-16 |
| GB2151800B (en) | 1987-05-20 |
| GB8431827D0 (en) | 1985-01-30 |
| DE3346102A1 (en) | 1985-07-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |