EP1291281A1 - Materialhandhabungssystem - Google Patents

Materialhandhabungssystem Download PDF

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Publication number
EP1291281A1
EP1291281A1 EP02256168A EP02256168A EP1291281A1 EP 1291281 A1 EP1291281 A1 EP 1291281A1 EP 02256168 A EP02256168 A EP 02256168A EP 02256168 A EP02256168 A EP 02256168A EP 1291281 A1 EP1291281 A1 EP 1291281A1
Authority
EP
European Patent Office
Prior art keywords
conduit
outlet
inlet
tapering portion
station
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.)
Withdrawn
Application number
EP02256168A
Other languages
English (en)
French (fr)
Inventor
Bernard A Timings
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.)
Ishida Europe Ltd
Original Assignee
Ishida Europe Ltd
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 Ishida Europe Ltd filed Critical Ishida Europe Ltd
Publication of EP1291281A1 publication Critical patent/EP1291281A1/de
Withdrawn legal-status Critical Current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
    • B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/007—Guides or funnels for introducing articles into containers or wrappers
    • 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
    • B65B37/00—Supplying or feeding fluent-solid, plastic, or liquid material, or loose masses of small articles, to be packaged
    • B65B37/02—Supplying or feeding fluent-solid, plastic, or liquid material, or loose masses of small articles, to be packaged by gravity flow

Definitions

  • the present invention relates to systems for handling particulate materials, e.g. foodstuffs.
  • the invention in one aspect relates to a conduit having an inlet and an outlet, the outlet being of smaller cross-sectional area than the inlet.
  • the inlet is intended to be higher than the outlet, and the conduit is arranged so that particulate material can fall from the inlet to the outlet .
  • the inlet may be intended to receive weighed batches or charges of particulate material from a weighing unit.
  • the outlet may be intended to be coupled to a downstream processing station, having an inlet of similar dimensions to the conduit's outlet.
  • the processing station may be a packaging station, e.g. comprising a bag making machine.
  • Preferred embodiments of the invention may enable one to ameliorate or solve either or both of these problems.
  • a conduit has a tapering portion of noncircular internal cross-section for discouraging helical flow along it. It is preferably of facetted cross-section.
  • the noncircular conduit portion is preferably offset, in that its outlet is at a lower level than its inlet, and laterally spaced from it. It may communicate with a second tapering portion. This may have internal walls that are generally steeper than those of the first tapering portion. It may have one or more transitions at which the wall steepness increases.
  • Upper and lower portions of the second tapering portion may both extend substantially vertically, with one being laterally offset with respect to the other. The upper portion may have one or more internal fins extending downwardly to restrain swirling.
  • the conduit, or at least the second tapering portion may be mounted so as to be vibratable and coupled to a vibratory device.
  • a preferred type of embodiment works on the principle of keeping the charge going, letting the speed build up as the charge drops through the system, but limiting the amount the charge spreads out (or disseminates). This means that the charge enters into the smallest diameter at a high speed and the particles making up the charge are spread out to an extent so that the density of the charge at this point is low. Therefore the chances of a jam are very low. This combined with the shape of the outlet chute and with the use of vibration lower the chance of jamming to nearly zero. Because the charge is travelling fast, even with the spread there will be a clear gap between the charges. This allows for the down line processing such as bag making or carton filling.
  • the conduit assembly 20 has an upper chute portion 22. This is an angled, tapering tube, of facetted cross-section.
  • the illustrated example is octagonal in section.
  • Its upper opening 24 is of very similar cross-sectional area to the outlet port 14 of the weighing machine. Being octagonal, it cannot match it exactly, so it is very slightly larger so that no particulate material emerging through the port 14 can fall outside the chute 22.
  • the chute extends steeply downwardly and slightly laterally to its outlet end where it is coupled to an outlet chute 26.
  • This may be of generally circular cross-section and may extend substantially vertically. It is shown in more detail in Fig. 2.
  • the upper mouth 28 is very slightly larger than the outlet aperture 30 of the upper chute 22.
  • the upper section 32 of the outlet chute 26 tapers slightly, to an annular vertex region 34.
  • the internal wall is closer to the vertical. It is still tapered.
  • the tapering has an asymmetry, such that the outlet 36 is slightly off-centred with respect to the upper inlet 28.
  • the wall has a continuous taper whereas at the other side 40, the tapering ends at a vertex 44 and the final portion of the internal wall 46 extends vertically (that is, parallel to the axis), with the result that the centre line 48 of the exit aperture 36 is slightly off set from the centre line 50 of the inlet aperture 30.
  • the lower portion of the outlet chute is smoothly shaped so that, circumferentially, there is a smooth transition from the vertical portion 46 to the angle of taper at the diametrically opposite portion. The offsetting is achieved without any internal step that would interfere with particle flow.
  • the weighing machine 10 In use, the weighing machine 10 accumulates successive batches or charges of particulate material, and releases them at intervals, into the top of the conduit 20. Each charge drops in through the mouth 24 without any retardation.
  • the facetted chute is quite steep, despite the offsetting, so the material can pass through quickly.
  • particulate material falls through a simple tubular conduit, particles tend to diverge from a direct path, parallel to the axis. There is a tendency to adopt helical paths. Much kinetic energy tends to be lost when this occurs, resulting in some particles travelling through the conduit much slower than the rest. The batch or charge of material thus becomes spread out.
  • the particles are kept moving substantially in the intended, downstream direction. If they start to deviate and move across the chute, the facets interrupt this component of their motion.
  • the outlet chute 26 has very steep sides, to keep the particles moving smoothly, with minimum contact. The final portion is offset. This produces an angular transition, which eases the passage from the larger to the smaller diameter, corresponding to the inlet diameter of the packaging machine 16.
  • the charge of material does not spread out substantially during transit and it passes through the exit orifice at high speed.
  • the overall length of the conduit is such that there will have been some spreading out in the direction of travel. Some spreading is actually desirable, since it reduces the density of the material and thus reduces the chance of a jam. Because the charge is travelling fast, even with the spreading that does occur, there will be a clear gap between successive charges. This facilitates downstream processing such as bag-making or carton filling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)
EP02256168A 2001-09-05 2002-09-05 Materialhandhabungssystem Withdrawn EP1291281A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0121469 2001-09-05
GB0121469A GB0121469D0 (en) 2001-09-05 2001-09-05 Material handling system

Publications (1)

Publication Number Publication Date
EP1291281A1 true EP1291281A1 (de) 2003-03-12

Family

ID=9921546

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02256168A Withdrawn EP1291281A1 (de) 2001-09-05 2002-09-05 Materialhandhabungssystem

Country Status (2)

Country Link
EP (1) EP1291281A1 (de)
GB (1) GB0121469D0 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2334474A1 (es) * 2007-03-26 2010-03-10 Payper, S.A. Tubo de aceleracion o tubo de llenado por gravedad para descarga de material pulvurulento o granulado.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949536A (en) * 1930-04-28 1934-03-06 Jl Ferguson Co Packaging device
US3925960A (en) * 1974-04-18 1975-12-16 Lakso Company Inc Article counting and filling machine
DE3210724A1 (de) * 1982-03-24 1983-10-06 Bosch Gmbh Robert Vorrichtung zum abmessen und abfuellen von gutportionen in verpackungsbehaelter
US4792031A (en) * 1983-09-21 1988-12-20 Kliklok Corporation Filler collar for multiple scale weighing system
US4877067A (en) * 1987-09-25 1989-10-31 Shikoku Kakoki Co., Ltd. Apparatus for distributedly filling particulate or granular material into containers
US6055781A (en) * 1996-11-04 2000-05-02 Jr Johanson, Inc. Archbreaking hopper for bulk solids

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949536A (en) * 1930-04-28 1934-03-06 Jl Ferguson Co Packaging device
US3925960A (en) * 1974-04-18 1975-12-16 Lakso Company Inc Article counting and filling machine
DE3210724A1 (de) * 1982-03-24 1983-10-06 Bosch Gmbh Robert Vorrichtung zum abmessen und abfuellen von gutportionen in verpackungsbehaelter
US4792031A (en) * 1983-09-21 1988-12-20 Kliklok Corporation Filler collar for multiple scale weighing system
US4877067A (en) * 1987-09-25 1989-10-31 Shikoku Kakoki Co., Ltd. Apparatus for distributedly filling particulate or granular material into containers
US6055781A (en) * 1996-11-04 2000-05-02 Jr Johanson, Inc. Archbreaking hopper for bulk solids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2334474A1 (es) * 2007-03-26 2010-03-10 Payper, S.A. Tubo de aceleracion o tubo de llenado por gravedad para descarga de material pulvurulento o granulado.

Also Published As

Publication number Publication date
GB0121469D0 (en) 2001-10-24

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