EP0593861B1 - Ventilsackfüllmaschine - Google Patents

Ventilsackfüllmaschine Download PDF

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Publication number
EP0593861B1
EP0593861B1 EP93111846A EP93111846A EP0593861B1 EP 0593861 B1 EP0593861 B1 EP 0593861B1 EP 93111846 A EP93111846 A EP 93111846A EP 93111846 A EP93111846 A EP 93111846A EP 0593861 B1 EP0593861 B1 EP 0593861B1
Authority
EP
European Patent Office
Prior art keywords
valve
valve bag
filling machine
filling
tensioning lever
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 - Lifetime
Application number
EP93111846A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0593861A1 (de
Inventor
Alois Combrink
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.)
Haver and Boecker OHG
Original Assignee
Haver and Boecker OHG
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
Application filed by Haver and Boecker OHG filed Critical Haver and Boecker OHG
Publication of EP0593861A1 publication Critical patent/EP0593861A1/de
Application granted granted Critical
Publication of EP0593861B1 publication Critical patent/EP0593861B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65B1/04—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 present invention relates to a valve bag filling machine with at least one filling tube, which is in flow connection with a filling unit.
  • valve bag filling machine in question is known in various versions. Preferred embodiments are the so-called rotating filling machines and the stationary machines.
  • the filling pipes are provided with a screw-on flange that is opposite the outflow opening to make them easier to replace. With these rotating filling machines, the filling pipes are either horizontal, vertical or they are inclined at a small acute angle to the horizontal. The same applies to the stationary filling machines if they are designed as a row packing machine.
  • the filling units are e.g. B. rotatingly driven filling turbines or pressurized filling pots.
  • the latter Valve bag filling machines are referred to in the industry as air packers.
  • a valve bag filling machine equipped with an air packer and a filling turbine is previously known from DE-C-36 07 508.
  • This rotating filling machine can be equipped with different filling pipes.
  • double-walled filling pipes are used in many cases, for example.
  • Such a filling pipe is known for example from DE-C-38 34 810.
  • This publication can also be seen that the valve bag attached to the filling tube can be fixed by means of a stamp that can be moved up and down.
  • the previously known valve bag filling machines have proven their worth in practice.
  • a conical design of the filling tube and a filling tube with an inflatable cuff are known.
  • a conical design of the filling tube and a filling tube with an inflatable cuff are known.
  • a filling tube with a double cone was also developed.
  • this design can be considered sufficient in terms of filling technology, sack production is very problematic and represents a significant increase in costs due to the conical shape Valves.
  • it must be taken into account that it is absolutely necessary for the valve bag to be plugged onto a filling pipe that the valve can be slipped on easily, ie without any special force being applied. For this purpose, it is necessary that there is a game between the inner contour of the valve and the fill pipe.
  • the filling tube be designed as an expandable inflation hose, at least in the central region.
  • the inflation hose is, however, to be regarded as a wearing part.
  • valve of the valve bag as a filter valve, i.e. to be made of an air-permeable material so that the exhaust air can be sucked through the valve.
  • a satisfactory solution is not yet achieved by expanding the valve.
  • the present invention is based on the object of designing a valve bag filling machine of the generic type in such a way that no filling material can escape, so that one can speak of a clean or dust-free filling technique.
  • the object is achieved in that the filling tube has at least one slot-like recess extending in the longitudinal direction over a defined area, that in the area of the filling tube a tensioning lever is movably mounted in the area of the slot-like recess or slots-like recesses, which is controlled by means of a controlled Drive after inserting a sack to be filled can be inserted into the recess, so that the valve of a valve sack put on the filling tube is extended over the entire length substantially over the entire length by the clamping lever lowered into the recess during the entire filling process by the clamping forces generated by the clamping lever creates the outer surface of the filling pipe.
  • a filling nozzle for a filling machine (not explained in more detail) which is flattened on the upper side is, the surface extending either over the entire length of the filling nozzle or over the front region.
  • the filling tube can be provided with a transverse depression in the central region.
  • This design of the filling nozzle is intended to ensure that the sack to be filled does not slide off the filling nozzle.
  • a hand lever is pivotally mounted on a boom, which is first placed on the sack by hand by swiveling it after it has been attached.
  • This hand lever is designed so that it presses the sack against the filling tube during the filling process, since the sack tends to slide off the filling tube.
  • the filling tube is designed so that the flat is roughened. The end contacting the sack is then provided with a corresponding roughening.
  • the filling tube is provided in the middle with a step or a recess in further versions, so that the sack is deformed by the hand lever attached. From this publication it follows that no measures have been taken to prevent the discharge of the filling material. This publication also does not show how the filling machine is constructed so that the filling material gets into the sack through the filling nozzle. Due to the age of this previously known filling nozzle, a comparison with the prevailing conditions is not possible anyway. In particular, the transverse step or recess means that no sealing is achieved, but rather leaky channels are created.
  • the valve base of the valve bag put on the filling tube now forms an abutment for the clamping lever pressed into the recess.
  • the region of the valve assigned to the recess is exposed to externally acting clamping forces, which cause the valve to be pulled against the outer surfaces of the filler pipe lying outside the recess. Since the valve is also within certain tolerances, it can happen that the area of the valve that is longitudinally assigned to the recess does not rest over the entire surface, but that only a part is exposed to these clamping forces. However, this part is so long that one can speak of a sealing surface in the valve area of sufficient length so that no filling material can escape.
  • valve bag filling machine ensures that the clearance between the valve and the filling pipe can be particularly large, as a result of which attachment is facilitated.
  • the filling pipe is double-walled, the separation of the outer, annular ventilation duct from the inner filling duct is fully preserved, so that the separation between the exhaust air and the product flow remains.
  • the slot-like recess extends from the outlet opening into the central region extends. This design makes it possible in a particularly simple manner for the exhaust air to get into the ventilation duct.
  • the length of this sealing surface is completely sufficient for sealing double-walled and single-walled filling pipes. This also applies if one takes into account that the valve cannot be stretched over the entire length of the slot-like recess due to tolerances in the manufacture of the sack, but that the tensioning lever touches down in the region of the front or rear end of the recess.
  • the function of the tensioning lever is significantly increased if its swivel axis can shift from filling to filling within a predetermined range, so that with different valve widths the lowering clamping lever contacts the valve bottom in the area of the end of the recess and then adjusts itself automatically. that the valve is stretched substantially over the entire valve length. This creates pressure points at least in the area of the front and rear end of the recess.
  • the adjustment of the pivot axis of the tensioning lever can be achieved particularly easily if the pivot axis is formed by a bolt which is guided in at least one elongated hole of a stationary bearing part.
  • Each tensioning lever is expediently designed as a one-armed lever, which is pivotably mounted at one end in the region of the end of the recess of the filling tube, and at the opposite end of which the controlled drive is articulated, the tensioning lever being angled in the central region and the included angle just below 180 degrees, for example 170 degrees.
  • the effective area of the tensioning lever in the lowered position is parallel or approximately parallel to the central longitudinal axis of the filling tube, so that the valve is tensioned over its entire length if possible.
  • the recess or the recesses is in each case a longitudinal slot, since this does not limit the movement of the tensioning lever in the direction of the central longitudinal axis of the filling tube.
  • the downwardly open recess also ensures that the flow of the filling material is guided separately from the exhaust air, since the bag parts pressed into the recess do not hinder the filling material flow.
  • the approximately parallel shape of the tensioning lever with the filler tube also ensures that the valve hose lies fully in the area of the ventilation slots, so that no external air can be sucked in through the valve end.
  • a double-walled filling tube 10 is shown with an inner tube 11 with an annular cross section and an outer tube 12 with a polygonal cross section.
  • the inner tube 11 and the outer tube 12 delimit a ventilation duct 13, which can be brought into a fluidic connection via a pipe socket 14 in a manner not explained in more detail with a vacuum source.
  • the outer tube 12 of the filling tube 10 is provided in the front region with a plurality of elongated holes 16 which extend over the entire circumference and extend in the longitudinal direction, the inner tube was partially cut open. The exhaust air passes through these elongated holes 16 into the ventilation duct 13.
  • the filling tube 10 is provided with a longitudinal slot 17 which extends through the inner tube 11 and the outer tube 12 and extends essentially from the outflow opening to the central region, and forms the recess.
  • This longitudinal slot 17 is located in the upper region of the filling tube 10. In deviation from the illustration, however, it can also be an inwardly directed bead which can also reach the inner tube 11.
  • a fork head 18 is attached to the outer tube 12 in alignment.
  • This fork head 18 is the bearing part for a clamping lever 20.
  • the end of the clamping lever 20 facing away from the outflow opening is pivotably mounted in the fork head.
  • the fork head 18 is equipped with elongated holes 21 provided in the two parallel legs.
  • the mounting of the tensioning lever 20 is such that the distance of the pivot axis to the filling tube can change from filling operation to filling operation, so that the tensioning lever tensions the valve over the length assigned to the recess 17. This at least ensures that the seal extends essentially over the area of the elongated holes 16 and thus also essentially over the length of the valve.
  • the longitudinal slot 17 is also sealed at the end region facing away from the outlet opening of the filling tube, so that no filling material can emerge from the slot.
  • the tensioning lever 20 is angled in the central area, the included angle being a little below 180 degrees.
  • the tensioning lever 20 carries a connecting lug 22 for articulated connection to the piston rod of a piston-cylinder unit 15, which forms the controlled drive for the tensioning lever 20.
  • the piston-cylinder unit 15 is suspended from cantilevers of the valve bag filling machine which are not explained in detail.
  • the reference numeral 24 designates a button for determining the attached sack by which the filling process is triggered.
  • valve bag is pressed with its valve into the slot-shaped recess 17 when the tensioning lever 20 is lowered.
  • This will the assigned area is ideally drawn over this area to the free outer surface of the filling tube 10.
  • the otherwise usual bag holder can be dispensed with in the normal case, so that the additional construction effort for the filling machine according to the invention is extremely low.
  • the valve of the valve bag is still sufficiently tensioned if it is within large tolerances, since at least one area is tensioned so that the necessary tightness is achieved.
  • the present invention is not limited to the illustrated embodiment, it is u. a. also applicable to a filling machine with a vertical downpipe.
  • the longitudinal slot 17 then extends over the corresponding area of the analog filling pipe attached to the downpipe.
  • the filling tube 10 can also be provided with two recesses in the form of the longitudinal slots 17 and two clamping levers 20.
  • the longitudinal slots 17 are then, in relation to the circumference of the filling tube, at a relatively small angular distance from one another. This version is advantageous for filling pipes in the lower diameter range. It is possible to compensate for larger tolerances between the filling pipe 10 and the bag valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)
EP93111846A 1992-10-21 1993-07-23 Ventilsackfüllmaschine Expired - Lifetime EP0593861B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4235469A DE4235469A1 (de) 1992-10-21 1992-10-21 Ventilsackfüllmaschine
DE4235469 1992-10-21

Publications (2)

Publication Number Publication Date
EP0593861A1 EP0593861A1 (de) 1994-04-27
EP0593861B1 true EP0593861B1 (de) 1995-08-16

Family

ID=6470971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111846A Expired - Lifetime EP0593861B1 (de) 1992-10-21 1993-07-23 Ventilsackfüllmaschine

Country Status (5)

Country Link
US (1) US5327950A (da)
EP (1) EP0593861B1 (da)
DE (2) DE4235469A1 (da)
DK (1) DK0593861T3 (da)
ES (1) ES2075749T3 (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT1153846E (pt) * 1998-12-30 2004-04-30 Terolasa S L Processo e instalacao para fabricar e encher sacos de multiplas cavidades

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1667930A (en) * 1927-08-22 1928-05-01 Louis L Edmunds Bag-filling apparatus
US1822747A (en) * 1928-05-26 1931-09-08 Richardson Scale Company Bag holder
US2046761A (en) * 1930-12-08 1936-07-07 Andreas Arno Bag filling spout
DE580335C (de) * 1931-11-11 1933-07-08 Arno Andreas Abfuellduese
US2156224A (en) * 1937-08-05 1939-04-25 Us Patent Dev And Royalty Comp Bag filling device
US2523673A (en) * 1947-06-10 1950-09-26 Austin Elmer Dale Bagging machine with trough leading to an apertured rotatable plate having bag spreading means
DE1712291U (de) * 1955-09-17 1955-12-01 Natronzellstoff Und Papierfab Absackstutzen fuer seitenfaltensaecke od. dgl. mit mechanisch, hydraulisch, pneumatisch oder magnetisch betaetigter sackklemme.
US3118474A (en) * 1961-04-18 1964-01-21 Staley Mfg Co A E Packing spout

Also Published As

Publication number Publication date
DE59300486D1 (de) 1995-09-21
DK0593861T3 (da) 1995-12-27
US5327950A (en) 1994-07-12
DE4235469A1 (de) 1994-05-05
ES2075749T3 (es) 1995-10-01
EP0593861A1 (de) 1994-04-27

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