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DE9413035U1 - Packaging machine with a welding device for closing packaging containers - Google Patents

Packaging machine with a welding device for closing packaging containers

Info

Publication number
DE9413035U1
DE9413035U1 DE9413035U DE9413035U DE9413035U1 DE 9413035 U1 DE9413035 U1 DE 9413035U1 DE 9413035 U DE9413035 U DE 9413035U DE 9413035 U DE9413035 U DE 9413035U DE 9413035 U1 DE9413035 U1 DE 9413035U1
Authority
DE
Germany
Prior art keywords
packaging machine
recess
packaging
sealing
machine 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.)
Expired - Lifetime
Application number
DE9413035U
Other languages
German (de)
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE9413035U priority Critical patent/DE9413035U1/en
Publication of DE9413035U1 publication Critical patent/DE9413035U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/346—Making joints having variable thicknesses in the joint area, e.g. by using jaws having an adapted configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • B29C66/43122—Closing the top of gable top containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
    • B65B51/144—Closing paperboard containers
    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81261—Thermal properties, e.g. thermal conductivity, thermal expansion coefficient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/81264—Mechanical properties, e.g. hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2883/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as mould material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Closing Of Containers (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Description

R. 27235R.27235

08.08.1994 Vt/Vt/Kei08.08.1994 Vt/Vt/Kei

ROBERT BOSCH GMBH, 70442 StuttgartROBERT BOSCH GMBH, 70442 Stuttgart

Verpackungsmaschine mit einer Schweißvorrichtung zum Verschließen von Verpackungsbehältern 15 Packaging machine with a welding device for closing packaging containers 15

Die Erfindung geht aus von einer Verpackungsmaschine nach dem Oberbegriff des Anspruchs 1. Bei einer derartigen, beispielsweise als Paketieranlage ausgebildeten Verpackungsmaschine werden aus einem siegelfähigem 0 Packstoffband quaderförmige Verpackungsbehälter in Form von Beutel hergestellt. Die Beutel werden mit einem Füllgut, wie zum Beispiel Kaffee, befüllt, und die Kopfbereiche der Beutel anschließend flossenförmig gefaltet. Dabei entstehen im Kopfbereich der Beutel im Bereich der V-förmig eingezogenen Seitenfalten und der Längsnaht Querschnitte mit vier Materiallagen. Zwischen diesen Bereichen hat der Querschnitt der Beutel jeweils zwei Materiallagen. Die so gefalteten Beutel werden abhängig vom Füllgut anschließend gegebenenfalls evakuiert. Nach dem Evakuieren wird im 0 Kopfbereich der Beutel mittels zweier Siegelbacken einer Schweißvorrichtung eine den Kopfbereich luftdicht verschließende Quer- oder Kopfnaht gebildet. Danach wird der so gebildete Kopfverschluß umgefaltet und die Beutel nachfolgenden Bearbeitungsstationen zugeführt.The invention is based on a packaging machine according to the preamble of claim 1. In such a packaging machine, designed for example as a packaging system, cuboid packaging containers in the form of bags are made from a sealable packaging material band. The bags are filled with a filling material, such as coffee, and the head areas of the bags are then folded in a fin shape. In the head area of the bags, cross sections with four layers of material are created in the area of the V-shaped side folds and the longitudinal seam. Between these areas, the cross section of the bags has two layers of material. The bags folded in this way are then evacuated if necessary, depending on the filling material. After evacuation, a cross or head seam that seals the head area airtight is formed in the head area of the bags using two sealing jaws of a welding device. The head closure thus formed is then folded over and the bags are fed to subsequent processing stations.

Bei der Herstellung insbesondere von sogenannten peelbaren, das heißt manuell offenbaren Quer- oder Kopfnähten ist der Übergang bsw. von zwei auf vier Materiallagen und umgekehrtWhen producing so-called peelable, i.e. manually openable cross or head seams, the transition from two to four layers of material and vice versa is

R. 27235R.27235

besonders kritisch. Um auch in diesen Bereichen eine gute Verschweißung zu erzielen, muß mit relativ hohen Anpressdrücken der Siegelbacken bzw. mit hohen Schweißtemperaturen gearbeitet werden. Dies kann jedoch zu einer Beschädigung des Verpackungsmaterials führen. Wird der Anpressdruck bzw. die Schweißtemperatur erniedrigt, so ist keine luftdichte Schweißung in den Bereichen mit geringerer Lagenanzahl, und insbesondere in den Übergangsbereichen zwischen verschiedenen Materiallagenanzahlen sichergestellt.particularly critical. In order to achieve good welding in these areas, relatively high contact pressures of the sealing jaws or high welding temperatures must be used. However, this can lead to damage to the packaging material. If the contact pressure or the welding temperature is reduced, an airtight weld cannot be ensured in the areas with a lower number of layers, and in particular in the transition areas between different numbers of material layers.

Die Aufgabe der Erfindung ist es, die Schweißvorrichtung bei gattungsgemäßen Verpackungsmaschinen so weiterzubilden, daß auch luftdichte Schweißnähte möglich sind, in deren Bereich sich eine unterschiedliche Anzahl von Materiallagen befindet.The object of the invention is to further develop the welding device in packaging machines of this type in such a way that airtight weld seams are also possible in the area of which there is a different number of material layers.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Verpackungsmaschine mit einer Schweißvorrichtung zum Verschließen von Verpackungsbehältern 0 mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß auch Verpackungsbehälter, in deren Kopf- bzw. Quernahtbereich sich eine unterschiedliche Anzahl von Packstofflagen befindet, sicher und luftdicht verschweißt werden können.The packaging machine according to the invention with a welding device for closing packaging containers 0 with the characterizing features of claim 1 has the advantage that packaging containers in whose head or cross seam area there is a different number of layers of packaging material can also be welded securely and airtight.

Weitere Vorteile und vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen und der Beschreibung. Besonders einfach lassen sich die Siegelbacken herstellen, wenn die Nut über die gesamte Breite der Siegelbacke ausgebildet ist.Further advantages and advantageous developments arise from the subclaims and the description. The sealing jaws are particularly easy to manufacture if the groove is formed over the entire width of the sealing jaw.

Vorteilhaft ist es außerdem, wenn die elastische Ausgleichsmasse lediglich linienförmig in der Ausnehmung anliegt, da dadurch eine geringere Wärmeübertragung von der Siegelbacke auf die Ausgleichsmasse erzielt wird.It is also advantageous if the elastic leveling compound only lies linearly in the recess, as this results in less heat transfer from the sealing jaw to the leveling compound.

R. 27235R.27235

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird in der nachfolgenden Beschreibung näher erläutert. Es zeigen Fig.l einen Teil einer Schweißvorrichtung einer Verpackungsmaschine vereinfacht im Querschnitt, Fig.2 die Schweißvorrichtung nach Fig.l bei geöffneten Siegelbacken, Fig.3 einen Verpackungsbehälter in perspektivischer Ansicht und Fig.4 einen Schnitt entlang der Linie IV-IV der Fig.3.An embodiment of the invention is shown in the drawing and is explained in more detail in the following description. Fig. 1 shows part of a welding device of a packaging machine in a simplified cross-section, Fig. 2 shows the welding device according to Fig. 1 with the sealing jaws open, Fig. 3 shows a packaging container in a perspective view and Fig. 4 shows a section along the line IV-IV of Fig. 3.

Beschreibung des AusführungsbeispielsDescription of the embodiment

In einer nicht näher dargestellte Verpackungsmaschine beispielsweise zum Herstellen, Füllen, Evakuieren und Verschließen von Verpackungsbehältern, wie Beutel 10, ist eine Schweißvorrichtung 11 angeordnet. Die Schweißvorrichtung 11 hat zwei horizontal gegeneinander verfahrbare Siegelbacken 12, 13, In jeder der Siegelbacken 12, 13 ist jeweils eine Heizeinrichtung in Form beispielsweise einer elektrisch betriebenen Heizpatrone 14 angeordnet. Die beiden Siegelbacken 12, 13 haben zueinander parallel angeordnete Stirnflächen 16, 17, zwischen denen eine Kopfnaht 18 im Beutel 10 gebildet wird.A welding device 11 is arranged in a packaging machine (not shown in detail) for producing, filling, evacuating and closing packaging containers such as bags 10. The welding device 11 has two sealing jaws 12, 13 that can be moved horizontally against each other. A heating device in the form of, for example, an electrically operated heating cartridge 14 is arranged in each of the sealing jaws 12, 13. The two sealing jaws 12, 13 have end faces 16, 17 arranged parallel to each other, between which a top seam 18 is formed in the bag 10.

In der einen Stirnfläche 16 der Siegelbacke 12 ist mittig und in Längsausrichtung mit der Kopfnaht 18 eine Nut 19 ausgebildet, die zumindest die Breite der Kopfnaht 18 hat. In der Nut 19 ist eine elastische Ausgleichsmasse in Form einer Raupe oder einer Rundschnur 21 angeordnet. Die Rundschnur 21 berührt die Nut 19 bei geöffneten Siegelbacken 12, 13 an Berührungslinien 22 bis 24. Weiterhin überragt die Rundschnur 21 die zugehörige Stirnfläche 16 der SiegelbackeIn one end face 16 of the sealing jaw 12, a groove 19 is formed centrally and in longitudinal alignment with the head seam 18, which groove has at least the width of the head seam 18. An elastic compensating compound in the form of a bead or a round cord 21 is arranged in the groove 19. The round cord 21 touches the groove 19 when the sealing jaws 12, 13 are open at contact lines 22 to 24. Furthermore, the round cord 21 projects beyond the associated end face 16 of the sealing jaw.

R. 27235R.27235

12 um ein bestimmtes Maß, zum Beispiel 0,5 mm bis 2 mm, je nach Material des Beutels 10 bzw. der Rundschnur 21.12 by a certain amount, for example 0.5 mm to 2 mm, depending on the material of the bag 10 or the round cord 21.

Zur Bildung der Kopfnaht 18 im Bereich der Stirnflächen 16, 17 wird ein Beutel 10 zwischen die beiden Siegelbacken 12,To form the head seam 18 in the area of the front surfaces 16, 17, a bag 10 is placed between the two sealing jaws 12,

13 verbracht und diese bei gleichzeitiger Aktivierung der Heizpatronen 14 gegeneinander verfahren und mit einem bestimmten Anpressdruck gegeneinander gepresst. Dabei weist der zuvor mittels einer nicht dargestellten Falteinrichtung flossenartig gefaltete Kopfverschluß 25 des Beutels 10 im Bereich der eingezogenen Seitenfalten 26 und der Längsnaht 27 Bereiche 28 mit vier Lagen Packstoff, und zwischen diesen Bereichen 28 andere Bereiche 29 mit zwei Lagen Packstoff auf. Werden nun die beiden Siegelbacken 12, 13 gegeneinander gepresst, so wird durch den aus der Stirnfläche 16 ragenden Teil der Rundschnur 21 insbesondere der Packstoff in den zweilagigen Bereichen 2 8 an die der Rundschnur 21 gegenüberliegende Stirnfläche 17 der Siegelbacke 13 gedrückt. Dies geschieht deshalb, weil die Rundschnur 21 in den vierlagigen Bereichen 28 stärker verformt wird als in den zweilagigen Bereichen 29. Somit wird auch in den zweilagigen Bereichen 28 der Packstoff selbst bei relativ geringen Anpressdrücken der Siegelbacken 12, 13 oder relativ geringen Schwexßtemperaturen sicher verschweißt. Die Rundschnur 21 bewirkt also eine Anlage des {zweilagigen) Packstoffes an der Stirnfläche 17 der Siegelbacke 13. Weiterhin liegt die Rundschnur 21 auch in den Übergangsbereichen zwischen den vier- und zweilagigen Bereichen 28, 29 stets formschlüssig am Beutel 10 an, so daß auch in den Ubergangsbereichen zwischen den Bereichen 28, eine sichere und insbesondere luftdichte Verschweißung durch Anlage des Packstoffes an der Siegelbacke 13 erzielt wird.13 and these are moved against each other with simultaneous activation of the heating cartridges 14 and pressed against each other with a certain contact pressure. The head closure 25 of the bag 10, which was previously folded like a fin using a folding device (not shown), has areas 28 with four layers of packaging material in the area of the drawn-in side folds 26 and the longitudinal seam 27, and other areas 29 with two layers of packaging material between these areas 28. If the two sealing jaws 12, 13 are now pressed against each other, the part of the round cord 21 protruding from the end face 16 presses the packaging material in the two-layer areas 28 against the end face 17 of the sealing jaw 13 opposite the round cord 21. This happens because the round cord 21 is deformed more in the four-layer areas 28 than in the two-layer areas 29. Thus, even in the two-layer areas 28, the packaging material is securely welded even with relatively low contact pressures of the sealing jaws 12, 13 or relatively low welding temperatures. The round cord 21 thus causes the (two-layer) packaging material to rest on the front surface 17 of the sealing jaw 13. Furthermore, the round cord 21 always rests positively on the bag 10 in the transition areas between the four- and two-layer areas 28, 29, so that even in the transition areas between the areas 28, a secure and in particular airtight weld is achieved by the packaging material resting on the sealing jaw 13.

• a• a

R. 27235R.27235

Dadurch, daß die Rundschnur 21 linienförmig an den Berührungslinien 22 bis 24 in der Nut 19 der Siegelbacke 12 anliegt, wird nur relativ wenig Wärme von der Siegelbacke auf die Rundschnur 21 übertragen. Als Material für die Rundschnur 21 kommt bevorzugt Silikon oder Viton zur Anwendung, das eine möglichst hohe Wärmebeständigkeit, bsw. bis 200 Grad Celsius, sowie eine Shorehärte von ca. 40-50 besitzen sollte.Because the round cord 21 lies linearly on the contact lines 22 to 24 in the groove 19 of the sealing jaw 12, only relatively little heat is transferred from the sealing jaw to the round cord 21. Silicone or Viton is preferably used as the material for the round cord 21, which should have the highest possible heat resistance, e.g. up to 200 degrees Celsius, and a Shore hardness of approx. 40-50.

Ergänzend wird darauf hingewiesen, daß die Anwendung der Schweißvorrichtung 11 nicht nur auf die im Ausführungsbeispiel beschriebene Paketieranlage beschränkt ist. Vielmehr lassen sich bsw. auch Schlauchbeutelmachinen in gleicher vorteilhafter Weise weiterbilden. Weiterhin kann die Anordnung der Nut 19 bzw. der Rundschnur 21 in den Siegelbacken 12, 13 derart geändert werden, daß zum Beispiel in beiden Siegelbacken 12, 13 je eine Nut 19 bzw. Rundschnur 21 angeordnet ist, oder daß sich die Nut 19 nur in einem Abschnitt in einer der beiden Siegelbacken 12, 13 befindet.In addition, it should be noted that the use of the welding device 11 is not only limited to the packaging system described in the embodiment. Rather, tubular bag machines can also be developed in the same advantageous manner. Furthermore, the arrangement of the groove 19 or the round cord 21 in the sealing jaws 12, 13 can be changed in such a way that, for example, a groove 19 or round cord 21 is arranged in each of the two sealing jaws 12, 13, or that the groove 19 is only located in one section in one of the two sealing jaws 12, 13.

Um die Wärmeübertragung von den Siegelbacken 12, 13 auf die Rundschnur 21 weiter herabzusetzen ist es auch denkbar, auf die Beheizung der Siegelbacke 12, 13, in der sich die Rundschnur 21 befindet, zu verzichten.In order to further reduce the heat transfer from the sealing jaws 12, 13 to the round cord 21, it is also conceivable to dispense with the heating of the sealing jaw 12, 13 in which the round cord 21 is located.

Claims (6)

R. 27235 R. 27235 08.08.1994 Vt/Vt/Kei ROBERT BOSCH GMBH, 70442 Stuttgart AnsprücheR. 27235 R. 27235 08.08.1994 Vt/Vt/Kei ROBERT BOSCH GMBH, 70442 Stuttgart Claims 1. Verpackungsmaschine mit einer Schweißvorrichtung (11) zum Verschließen von Verpackungsbehältern (10), mit zwei gegeneinander verfahrbaren Siegelbacken (12, 13) zur Bildung einer Schweißnaht (18) im Bereich zweier parallel angeordneter Stirnflächen (16, 17) der Siegelbacken (12, 13), wobei in zumindest einer der Siegelbacken (12, 13) eine Heizeinrichtung (14) angeordnet ist, dadurch gekennzeichnet, daß in wenigstens einer der Siegelbacken (12, 13) im Bereich der Stirnflächen {16, 17) eine in Ausrichtung mit der Schweißnaht (18) angeordnete Ausnehmung (19) ausgebildet ist, daß in der Ausnehmung (19) eine elastische Ausgleichsmasse (21) angeordnet ist, und daß die Ausgleichsmasse (21) aus der Stirnfläche (16) der einen Siegelbacke (12) herausragt.1. Packaging machine with a welding device (11) for closing packaging containers (10), with two sealing jaws (12, 13) which can be moved relative to one another to form a weld seam (18) in the region of two parallel end faces (16, 17) of the sealing jaws (12, 13), with a heating device (14) being arranged in at least one of the sealing jaws (12, 13), characterized in that in at least one of the sealing jaws (12, 13) in the region of the end faces (16, 17) a recess (19) arranged in alignment with the weld seam (18) is formed, that an elastic compensating mass (21) is arranged in the recess (19), and that the compensating mass (21) protrudes from the end face (16) of one sealing jaw (12). 2. Verpackungsmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Ausnehmung in der einen Siegelbacke2. Packaging machine according to claim 1, characterized in that the recess in one sealing jaw (12) eine Nut (19) ist.(12) is a groove (19). • ·· R. 27235R.27235 3. Verpackungsmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Ausnehmung (19) mittig und in Längsausrichtung mit der Schweißnaht (18) in der Stirnfläche3. Packaging machine according to claim 1 or 2, characterized in that the recess (19) is centrally and in longitudinally aligned with the weld seam (18) in the front face (16) der einen Siegelbacke (12) ausgebildet ist. 5(16) which is designed with a sealing jaw (12). 5 4. Verpackungsmaschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die in der Ausnehmung (19) angeordnete Ausgleichsmasse (21) aus Silikon oder Viton besteht.4. Packaging machine according to one of claims 1 to 3, characterized in that the compensating mass (21) arranged in the recess (19) consists of silicone or Viton. 5. Verpackungsmachine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Ausgleichsmasse (21) in der Ausnehmung (19) an Berührungslinien (22 bis 24) anliegt.5. Packaging machine according to one of claims 1 to 4, characterized in that the compensating mass (21) in the recess (19) rests against contact lines (22 to 24). 6. Verpackungsmaschine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Ausgleichsmasse in Form einer Raupe oder Rundschnur (21) in der Ausnehmung (19) angeordnet ist.6. Packaging machine according to one of claims 1 to 5, characterized in that the compensating mass is arranged in the form of a caterpillar or round cord (21) in the recess (19).
DE9413035U 1994-08-12 1994-08-12 Packaging machine with a welding device for closing packaging containers Expired - Lifetime DE9413035U1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904154A1 (en) * 1999-02-03 2000-08-17 Bosch Gmbh Robert Device for closing packaging made from a heat-sealable material
DE10000052A1 (en) * 2000-01-03 2001-07-05 Focke & Co Thermic closure device for foil packaging has reciprocating heated closure plate cooperating with counter-plate supporting foil packaging
WO2003031269A1 (en) 2001-10-05 2003-04-17 Robert Bosch Gmbh Device and method for producing and sealing packagings produced from at least one heat sealable packaging material strip
DE102007061245A1 (en) * 2007-12-19 2009-06-25 Multivac Sepp Haggenmüller Gmbh & Co. Kg Device and method for sealing packages
WO2011002885A1 (en) * 2009-07-01 2011-01-06 Printpack Illinois, Inc. Heat seal die with compressible heat seal members and methods of use thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904154A1 (en) * 1999-02-03 2000-08-17 Bosch Gmbh Robert Device for closing packaging made from a heat-sealable material
DE10000052A1 (en) * 2000-01-03 2001-07-05 Focke & Co Thermic closure device for foil packaging has reciprocating heated closure plate cooperating with counter-plate supporting foil packaging
US6619012B2 (en) * 2000-01-03 2003-09-16 Focke & Co. (Gmbh & Co.) Apparatus for the heat sealing of folding flaps, and mechanism for actuating sealing elements
WO2003031269A1 (en) 2001-10-05 2003-04-17 Robert Bosch Gmbh Device and method for producing and sealing packagings produced from at least one heat sealable packaging material strip
DE102007061245A1 (en) * 2007-12-19 2009-06-25 Multivac Sepp Haggenmüller Gmbh & Co. Kg Device and method for sealing packages
WO2011002885A1 (en) * 2009-07-01 2011-01-06 Printpack Illinois, Inc. Heat seal die with compressible heat seal members and methods of use thereof

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