EP0248371B1 - Sackfüllmaschine - Google Patents

Sackfüllmaschine Download PDF

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Publication number
EP0248371B1
EP0248371B1 EP87107863A EP87107863A EP0248371B1 EP 0248371 B1 EP0248371 B1 EP 0248371B1 EP 87107863 A EP87107863 A EP 87107863A EP 87107863 A EP87107863 A EP 87107863A EP 0248371 B1 EP0248371 B1 EP 0248371B1
Authority
EP
European Patent Office
Prior art keywords
machine
filling
parallel links
parallel
bag support
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.)
Expired
Application number
EP87107863A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0248371A1 (de
Inventor
Joachim Dr.-Ing. Spiess
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Natronag Gesellschaft fuer Verpackungssysteme mbH
Original Assignee
Natronag Gesellschaft fuer Verpackungssysteme mbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6302189&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0248371(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Natronag Gesellschaft fuer Verpackungssysteme mbH filed Critical Natronag Gesellschaft fuer Verpackungssysteme mbH
Priority to AT87107863T priority Critical patent/ATE44925T1/de
Publication of EP0248371A1 publication Critical patent/EP0248371A1/de
Application granted granted Critical
Publication of EP0248371B1 publication Critical patent/EP0248371B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
    • B65B1/32—Devices or methods for controlling or determining the quantity or quality or the material fed or filled by weighing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/18—Methods of, or means for, filling the material into the containers or receptacles for filling valve-bags

Definitions

  • the invention relates to a sack filling machine with an electronic weighing device, which has a force transducer acted upon by a sack chair column, and with a sack chair guide, which consists of two upper and lower parallel bars, which are arranged on both sides of the sack chair column and whose two bearing points are designed as rod ends.
  • Such a bag filling machine is known from DE-PS 2 704 138.
  • links with rod ends for example self-aligning ball bearings
  • certain manufacturing tolerances in the manufacture of the links can be compensated. Since the deflection of the sack chair is only a few millimeters on an electronic scale, there is a sufficiently good approximation of a vertical movement of the sack chair column.
  • wishbones are provided which engage the sack chair column in the upper and lower area and prevent a possible tilting movement.
  • the wishbones Since the wishbones have a fixed length, they somewhat hinder the vertical movement of the sack chair column, as is made possible by the parallel arms. This can adversely affect the weighing process.
  • the invention is therefore based on the object of designing a sack filling machine of the type mentioned at the outset in such a way that a tilting movement of the sack chair column between the parallel cores is reliably prevented and yet there is no impairment of the vertical movement of the sack chair column.
  • Sack filling machines which are provided for filling valve sacks have a filling tube which can be inserted into the sack valve.
  • the filling tube is regularly inclined downwards, for example by 20 ° with respect to the horizontal. It has been shown that a measurement error occurs during the filling process, during which the weighing process takes place continuously. Studies have shown that this measurement error is due to the fact that the filling material coming from the filling tube hits the side wall of the sack at approximately the angle of the filling tube. This creates a vertical force component that falsifies the weighing result.
  • the parallel links are parallel to an inclined filling tube.
  • the parallel links are also inclined downwards at an angle of 20 °.
  • the force transducer can still be aligned horizontally so that its measuring direction is aligned perpendicular.
  • the force transducer can also be oriented in such a way that its measuring direction is oriented perpendicular to the parallel core, so that in the example mentioned it is tilted 20 ° from the vertical. This leads to the sensor measuring only one weight component, namely the weight multiplied by cos 20 °. To get the exact measurement result, the electronics of the balance must multiply the measurement result by 1 / cos 20 °.
  • a fixed machine frame 1 is shown in dashed lines.
  • joint heads 3 of upper parallel core 4 and lower parallel core 5 designed as self-aligning ball bearings are attached.
  • the other ends of the parallel links are connected to an upper axle 6 or lower axle 7 via corresponding joint heads 3.
  • sleeves 8 are arranged which enclose a bag chair column 9 and hold it firmly.
  • the upper parallel link 4 are connected by a rigid coupling rod 10 and the lower parallel link 5 by a rigid coupling rod 11.
  • the coupling rod 10 and 11, with the associated parallel link core 4 and 5, thus forms a rigid frame which prevents the axis 6, 7 from tilting sideways out of the plane formed by the parallel link link 4 and 5. This also prevents the bag chair column 8 from tilting.
  • the parallel links 4,5 are inclined 20 ° downwards from the horizontal. This inclination corresponds to the inclination of the filling tube (not shown) of the bag filling machine.
  • this has a rectangular frame 12, the upper cross bar of which is connected to a force transducer 13.
  • the frame 12 is inclined forward from the vertical by 20 °, so that it is perpendicular to the planes formed by the parallel links 4 and 5, respectively.
  • the force transducer 13 is oriented such that its effective measuring direction is oriented perpendicular to the links 4 and 5 - and thus also perpendicular to the upper crossbar of the frame 12.
  • the force transducer 13 is formed by a bending rod which is fastened to the machine frame 1 parallel to the parallel core 4 or 5.
  • the parallel links 4 and 5 are parallel to the filling tube of the bag filling machine and parallel to the longitudinal axis of the bending rod serving as a force transducer 13.
  • the force transducer 13 does not measure the weight G of the filled bag, but a weight component G - cos 20 °.
  • the evaluation electronics is therefore set so that it multiplies the weight measured by the force transducer 13 by the constant factor 1 / cos 20 °. In this way, the correct absolute value is determined by the weighing device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Basic Packing Technique (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP87107863A 1986-06-03 1987-05-30 Sackfüllmaschine Expired EP0248371B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87107863T ATE44925T1 (de) 1986-06-03 1987-05-30 Sackfuellmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3618648 1986-06-03
DE19863618648 DE3618648A1 (de) 1986-06-03 1986-06-03 Sackfuellmaschine

Publications (2)

Publication Number Publication Date
EP0248371A1 EP0248371A1 (de) 1987-12-09
EP0248371B1 true EP0248371B1 (de) 1989-07-26

Family

ID=6302189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107863A Expired EP0248371B1 (de) 1986-06-03 1987-05-30 Sackfüllmaschine

Country Status (7)

Country Link
US (1) US4708216A (enExample)
EP (1) EP0248371B1 (enExample)
AT (1) ATE44925T1 (enExample)
AU (1) AU582086B2 (enExample)
CA (1) CA1277644C (enExample)
DE (2) DE3618648A1 (enExample)
ES (1) ES2010690B3 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD318353S (en) 1989-06-23 1991-07-16 French Can-Can, Inc. Wall mounted bag holding rack
US5735494A (en) * 1996-03-07 1998-04-07 Kurk; Robert Bag holder
US6894232B2 (en) * 2002-08-12 2005-05-17 Mettler-Toledo Bagger scale
CA135055S (en) * 2009-11-12 2010-11-26 Kupri Beheer B V Rubbish bag holder

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US447686A (en) * 1891-03-03 Bag-holder
US1520372A (en) * 1922-04-27 1924-12-23 Paul R Syers Combined laundry-bag holder and weight indicator
DE1299249B (de) * 1965-11-09 1969-07-10 Nakashima Shigeo Makagyo Vorrichtung zum Einfuellen von pulverfoermigem Gut in Ventilsaecke
US3620317A (en) * 1970-05-04 1971-11-16 Nelson R Henry Automatic filling and weighing mechanism
DE2312851C2 (de) * 1973-03-15 1982-08-19 Erwin Behn Verpackungsbedarf Gmbh, 4150 Krefeld Wägeeinrichtung für Ventilsackfüllmaschinen
DE2704138C2 (de) * 1977-02-02 1982-05-06 Natronag Papierproduktion Gmbh & Co, Papiersackfabriken Kg, 3380 Goslar Parallelführung einer Sackstuhlsäule einer Ventilsack-Füllmaschine

Also Published As

Publication number Publication date
ATE44925T1 (de) 1989-08-15
DE3760355D1 (en) 1989-08-31
DE3618648C2 (enExample) 1988-03-10
EP0248371A1 (de) 1987-12-09
AU582086B2 (en) 1989-03-09
AU7367187A (en) 1987-12-10
DE3618648A1 (de) 1987-12-10
US4708216A (en) 1987-11-24
ES2010690B3 (es) 1989-12-01
CA1277644C (en) 1990-12-11

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