EP0267458A1 - Düse mit mindestens einer verschliessbaren Düsenöffnung - Google Patents

Düse mit mindestens einer verschliessbaren Düsenöffnung Download PDF

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Publication number
EP0267458A1
EP0267458A1 EP87115211A EP87115211A EP0267458A1 EP 0267458 A1 EP0267458 A1 EP 0267458A1 EP 87115211 A EP87115211 A EP 87115211A EP 87115211 A EP87115211 A EP 87115211A EP 0267458 A1 EP0267458 A1 EP 0267458A1
Authority
EP
European Patent Office
Prior art keywords
piston
nozzle
opening
guide
nozzle according
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Withdrawn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
EP87115211A
Other languages
German (de)
English (en)
French (fr)
Inventor
Lars Erik Trygg
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.)
SIG Combibloc GmbH and Co KG
Original Assignee
SIG Combibloc GmbH and Co KG
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 SIG Combibloc GmbH and Co KG filed Critical SIG Combibloc GmbH and Co KG
Publication of EP0267458A1 publication Critical patent/EP0267458A1/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Withdrawn legal-status Critical Current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
    • B65B39/001—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
    • B65B39/004—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves moving linearly

Definitions

  • the present invention relates to a nozzle with at least one closable nozzle opening, in particular a filling nozzle for filling machines and the like for liquid products, with a valve body designed as a piston, which is located between a retracted position in which the opening is opened and an advanced position. in which the piston protrudes into the opening and completely closes it, it can be moved back and forth.
  • Nozzles of this type are used, inter alia, in machines for filling soups, creams, fruit compotes, sauces and the like, which can contain pieces of fruit, vegetables or meat, in packaging which is conveyed in rapid succession on a conveyor belt located under the nozzle opening. Since it is food, great demands are placed on hygiene and the nozzles must be sterilized at regular intervals. As a result, and also because the area around the nozzle is rather aggressive, partly because of fruit acids, the parts of known nozzles are made of stainless steel.
  • the products to be filled can in various cases consist of large pieces and also pieces of long-fiber products which have to be cut off in connection with the filling, it is necessary to have a very tight fit between the piston-shaped valve body and the Can maintain nozzle opening to obtain an effective cutting function between these parts.
  • This tight fit means that the piston remains seated during the sterilization processes due to material expansion at the elevated temperatures in the nozzle opening or existing guides, in order to be able to move again only after the temperature has dropped to essentially normal operating temperature.
  • the main object of the present invention is to provide a nozzle of the type mentioned above, which, while avoiding the disadvantages mentioned, combines, among other things, the advantages of a very effective cutting function with the possibility of the piston moving even during the sterilization processes.
  • this object is generally achieved in that the piston is designed in such a way that its dimensions automatically adapt to the current dimension of the nozzle opening and piston guides.
  • a nozzle of the type mentioned in the introduction is therefore characterized according to the present invention by a guide for the piston, with at least two guide surfaces, which cooperate with two essentially opposite surfaces on the piston to guide the piston precisely into the nozzle opening, that the piston in the axial direction is split or slotted and that biasing members are arranged to press the piston halves away from each other for sealing support against the walls of the nozzle opening.
  • the piston is expedient for the piston to be divided or slotted in an axial plane which extends between the surfaces of the piston which are located opposite one another and cooperate with the said guide surfaces.
  • the guide surfaces preferably have the same shape as the walls of the nozzle opening and merge smoothly into the same.
  • the guide comprises a guide sleeve surrounding the piston and adjoining the nozzle opening, the walls of which are formed with openings that can be closed by the piston in the advanced position of the same, and a sealing element is provided to prevent leakage through the nozzle opening through the separation or to prevent the slit of the piston in the advanced position of the piston.
  • the sealing element expediently comprises a rubber seal which is arranged between the piston halves and which adjoins the shape of the outer boundary surfaces of the piston, at least on the part of the piston lying outside the guide.
  • the sealing element can have the shape of a rubber washer with position-determining projections which interact with corresponding recesses in the piston halves.
  • the rubber washer at the outer end of the piston can be formed with a thicker section which merges into one or more tips protruding outside the face of the piston.
  • the sealing element can be designed as a rubber ring which surrounds the rear, non-slotted part of the piston and, in the advanced position of the piston, cooperates in a sealing manner with a sleeve-shaped piston guide.
  • the biasing members acting on the piston halves preferably comprise a resilient element arranged between the piston halves.
  • 1 shows very schematically the principle of a filling machine in which a nozzle according to the invention is used.
  • 1 denotes a container for a product that is to be filled in packs 2, which are conveyed in rapid cycle on a belt running under the filling machine.
  • the product can consist, for example, of fruit compotes with pieces of fruit or soups with pieces of meat.
  • 3 designates a valve which, in the schematic embodiment shown, is connected to the piston in a nozzle 5 according to the invention by an actuating rod 4.
  • the rod 4 is effected by using an actuating cylinder 6 upwards and downwards.
  • another cylinder is designated, which acts on a metering piston 8.
  • the piston 9 according to the present invention can be divided into two halves, see Fig. 3, which halves with are loaded by a biasing force, in the present example by a spring 13, which press the piston halves in the direction of one another and for support against the boundary walls of the openings 10.
  • a biasing force in the present example by a spring 13 which press the piston halves in the direction of one another and for support against the boundary walls of the openings 10.
  • each guide 14 is provided with two opposite openings 15. These openings are closed by the pistons 9 when they move into the openings 10 in the plate 12.
  • each piston 9 is divided in an axial plane, which extends between the opposite guide surfaces mentioned and which continuously transition into the openings 10.
  • a seal between the piston halves In order to prevent leakage through the nozzle opening due to the separation between the pistons, it is sufficient to provide a seal between the piston halves over the part extending above the guides 14.
  • an expedient sealing element in the form of a rubber washer 16 is shown, which is provided for attachment between the piston halves and is designed with a width such that it closely adjoins the outer profile of the piston 9, see the section in Fig. 5.
  • Die The rubber disc is designed with position-determining projections 17, which cooperate with corresponding recesses in the respective piston half, and has an opening 18 for the spring 13.
  • a rubber strip fixed in grooves in the piston halves and, for example, a frame-shaped rubber strip which extends along the edges of the piston halves.
  • a rubber strip or the shown rubber washer also fulfills another essential function, namely as a shock absorber. If a piston 9 is to be advanced at high speed into the corresponding opening 10 while simultaneously cutting off a meat cube or similar, a radially inward force is obtained which compresses the piston halves to a certain extent against the action of the spring 13. It may be unsuitable to measure the spring 13 such that it resists an inward movement of the piston halves caused by an impact.
  • the rubber washer or the rubber strip serves as an effective shock absorber that dampens the piston halves and prevents excessive compression of the same. If necessary, it is possible to completely replace the spring 13 with a rubber sealing element or to form or provide this with individual cushions made of elastic rubber material, which has the same effect as that of the spring 13.
  • the rubber material can have different spring characteristics if it is exposed to impacts or slow-acting forces.
  • the piston 9 need not be entirely divided, but can be provided with a slot which extends over only part of the length of the piston, provided that the halves separated by the slot are slightly opposite can move each other.
  • a sealing element arranged between the piston halves, an O-ring seal or the like can be used, which runs in a groove around the unslotted part of the piston, so that the seal at the bottom dead center of the piston Interaction with the associated guide 14 comes.
  • the piston is formed with a tip 19 as shown in FIG. 6, which protrudes from the end face thereof.
  • This can consist, for example, of the tip of a cylindrical rubber body which is inserted in a corresponding recess in the piston.
  • the cylindrical rubber body with the tip 19 can be formed in one piece with the sealing washer 16.
  • FIG. 7 shows a nozzle according to the invention with a piston 9 according to FIG. 6 while the intended amount of product is being filled in a package 2 located under the nozzle opening.
  • the piston 9 is shown in one position when it is just protruding into the opening 10, product pieces which are then intended to pass through the opening edge being effectively cut off due to the cutting function between the piston 9 and the edge.
  • pistons made of TORLON and POLYSULPHONE were used with very good results, inter alia with regard to the cutting effect.
  • a nozzle according to the above can be designed with any number of pistons 9 and openings 10 and with the desired mutual attachment.
  • the prestressing element can be of any design and, for example, can be replaced in a slotted piston by a spring action of the legs of the piston.
  • the piston can be provided with several tips of the same or different sizes, depending on the current product, or with an irregularity of the piston surface caused in another way, which facilitates the release of the product from the surface.
  • Split pistons with guides according to the invention can be used in other nozzles or devices, as is apparent to the person skilled in the art, in addition to filling nozzles of the embodiment shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)
  • Basic Packing Technique (AREA)
  • Closures For Containers (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP87115211A 1986-10-29 1987-10-17 Düse mit mindestens einer verschliessbaren Düsenöffnung Withdrawn EP0267458A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8604611A SE460598B (sv) 1986-10-29 1986-10-29 Munstycke med minst en tillslutbar munstycksoeppning
SE8604611 1986-10-29

Publications (1)

Publication Number Publication Date
EP0267458A1 true EP0267458A1 (de) 1988-05-18

Family

ID=20366110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115211A Withdrawn EP0267458A1 (de) 1986-10-29 1987-10-17 Düse mit mindestens einer verschliessbaren Düsenöffnung

Country Status (5)

Country Link
US (1) US4792068A (sv)
EP (1) EP0267458A1 (sv)
JP (1) JPS63125102A (sv)
IN (1) IN168159B (sv)
SE (1) SE460598B (sv)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345685A1 (de) * 1988-06-09 1989-12-13 PKL Verpackungssysteme GmbH Zapf-Mundstück
EP0400368A1 (de) * 1989-06-02 1990-12-05 PKL Verpackungssysteme GmbH Füllventil zum portionsweisen Abfüllen von fliessfähigen Produkten

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119567A (en) * 1990-08-01 1992-06-09 Trend Products, Inc. Glass block spacing tool and method
US5228394A (en) * 1990-11-02 1993-07-20 Kabushiki Kaisha Kobeseikosho Processing apparatus for food materials
IL102515A (en) * 1992-07-15 1997-09-30 Shany David Storing and dispensing device for granular foodstuff, particularly dogfood
US5758698A (en) * 1996-08-01 1998-06-02 Tetra Laval Holdings & Finance, S.A. Fill system including a valve assembly and corresponding structure for reducing the mixing of product and air during container filling
US5819823A (en) * 1996-08-28 1998-10-13 Tetra Laval Holdings & Finance, S.A. Umbrella valve assembly having drip-prevention structure disposed about product fill pipe
US5775387A (en) * 1996-09-10 1998-07-07 Tetra Laval Holdings & Finance, S. A. Container filling system having fill-pipe with an extended sealing member for reducing mixing of product and air during container filling

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185885C (sv) *
FR1426463A (fr) * 1965-02-01 1966-01-28 Chemetron Corp Machine à remplir des récipients
DE1215457B (de) * 1964-05-15 1966-04-28 Gerdts Gustav F Kg Ringschieber
DE2819245A1 (de) * 1978-05-02 1979-11-15 Hick & Co Gmbh Dosiereinrichtung fuer abfuellanlagen

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466731A (en) * 1940-09-07 1949-04-12 American Can Co Liquid filling machine with traveling measure
US2761607A (en) * 1954-02-15 1956-09-04 American Machinery Corp Filler-valve for filling containers
US3425662A (en) * 1965-09-03 1969-02-04 Grove Valve & Regulator Co Valve construction with retractable seat rings
US3395889A (en) * 1965-09-29 1968-08-06 Westinghouse Air Brake Co Angle cock with positive sealing pressure reduction means
AT284574B (de) * 1967-02-23 1970-09-25 Grohe Armaturen Friedrich Steuerkolben in Flüssigkeitsarmaturen
US3865281A (en) * 1970-05-18 1975-02-11 Owens Illinois Inc Apparatus for filling containers
US3764042A (en) * 1972-08-03 1973-10-09 United States Steel Corp Reciprocable slidable gate with rotating slide element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185885C (sv) *
DE1215457B (de) * 1964-05-15 1966-04-28 Gerdts Gustav F Kg Ringschieber
FR1426463A (fr) * 1965-02-01 1966-01-28 Chemetron Corp Machine à remplir des récipients
DE2819245A1 (de) * 1978-05-02 1979-11-15 Hick & Co Gmbh Dosiereinrichtung fuer abfuellanlagen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345685A1 (de) * 1988-06-09 1989-12-13 PKL Verpackungssysteme GmbH Zapf-Mundstück
EP0400368A1 (de) * 1989-06-02 1990-12-05 PKL Verpackungssysteme GmbH Füllventil zum portionsweisen Abfüllen von fliessfähigen Produkten

Also Published As

Publication number Publication date
JPS63125102A (ja) 1988-05-28
IN168159B (sv) 1991-02-09
SE8604611L (sv) 1988-04-30
SE8604611D0 (sv) 1986-10-29
US4792068A (en) 1988-12-20
SE460598B (sv) 1989-10-30

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Inventor name: TRYGG, LARS ERIK