DE19705743A1 - Filling and closing thermoplastic sacks - Google Patents
Filling and closing thermoplastic sacksInfo
- Publication number
- DE19705743A1 DE19705743A1 DE1997105743 DE19705743A DE19705743A1 DE 19705743 A1 DE19705743 A1 DE 19705743A1 DE 1997105743 DE1997105743 DE 1997105743 DE 19705743 A DE19705743 A DE 19705743A DE 19705743 A1 DE19705743 A1 DE 19705743A1
- Authority
- DE
- Germany
- Prior art keywords
- sacks
- sack
- filling
- suction
- lowered
- 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- Withdrawn
Links
Classifications
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- 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
- B65B1/28—Controlling escape of air or dust from containers or receptacles during filling
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- 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
- B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
- B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
- B65B43/46—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers
- B65B43/465—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers for bags
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- 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
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- 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
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- 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
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- 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
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- 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
- 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
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/849—Packaging machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Basic Packing Technique (AREA)
- Making Paper Articles (AREA)
- Package Closures (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Befüllen und Verschließen einseitig offener, vorzugsweise mit Seitenfalten versehener Säcke aus thermoplastischem Kunststoff, bei dem die Säcke an den Seitenbereichen ihrer Öffnungsränder durch Halte- und/oder Transportgreifer erfaßt, durch einen in die geöffneten Säcke absenkbaren Füllstützen befüllt und durch eine Kopfschweißnaht verschlossen werden, sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for filling and closing unilaterally open, preferably with gusseted bags made of thermoplastic material, in which the bags are held on the side areas of their opening edges by holding and / or gripper is gripped by one that can be lowered into the open sacks Filling supports are filled and closed by a head weld, as well as a Device for performing this method.
Bei einem aus EP 0 290 879 B1 bekannten Verfahren dieser Art werden die nach ihrem Befüllen durch Kopfschweißnähte verschlossenen Säcke abtransportiert, zwi schengelagert und zum Versand gebracht oder gelagert. Die ihrer grundsätzlichen Form nach quaderförmigen Säcke werden bei ihrer Handhabung nach dem Befüllen und Verschließen zu Stapeln zusammengefaßt. Bei der Stapelung und Handhabung der Säcke machen sich jedoch unvermeidbare Lufteinschlüsse nachteilig bemerkbar, weil die Säcke aufgrund der durch die Lufteinschlüsse gebildeten Luftpolster zum Federn und Schwimmen neigen. Da die Säcke aus luftundurchlässigem thermopla stischem Kunststoff bestehen, bauen sich auch über die Zeit diese Luftpolster nicht ab. Aufgrund der durch Lufteinschlüsse gebildeten Luftpolster sind die gefüllten Säc ke auch nicht formstabil.In a method of this type known from EP 0 290 879 B1, the following their filling by means of head welding seams, closed bags, zwi stored and shipped or stored. That of their basic Shape after cuboid sacks are handled when they are filled and sealing combined into stacks. When stacking and handling of the bags, however, unavoidable air pockets have a negative impact, because the bags due to the air pockets formed by the air pockets to Feathers and swimming tend. Since the bags are made of airtight thermopla consist of plastic, these air cushions do not build up over time from. Due to the air cushions formed by air pockets, the filled bags are ke also not dimensionally stable.
Aufgabe der Einfindung ist es daher, ein Verfahren der eingangs angegebenen Art vorzuschlagen, nachdem sich formstabile Säcke ohne Luftpolster herstellen lassen.It is therefore the task of finding a method of the type specified at the beginning to propose after dimensionally stable bags can be made without air cushions.
Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß aus dem gefüllten Sack vor dem Anbringen der Kopfschweißnaht Luft abgesaugt wird.According to the invention this object is achieved in that from the filled bag air is drawn off before the head weld is applied.
Um in dem gefüllten Sack einen vorherbestimmten Unterdruck zu erzeugen, wird nach einer vorteilhaften Ausgestaltung beim Absaugen der Luft der Unterdruck in dem Sack gemessen und das Absaugen beendet, wenn ein vorgegebener Unter druck erreicht worden ist.In order to generate a predetermined negative pressure in the filled sack, according to an advantageous embodiment, when the air is sucked off, the vacuum in measured the sack and the suction stops when a predetermined sub pressure has been reached.
Eine Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens mit einem die Säcke im Bereich ihrer Öffnungsränder an den Seitenbereichen erfassenden Greiferpaar, mit einem in die geöffneten Säcke absenkbaren und hebbaren Füllstüt zen und mit einer Schweißeinrichtung, die die aufeinanderliegenden Öffnungsränder der Säcke durch Querschweißnähte verschließt, zeichnet sich erfindungsgemäß da durch aus, daß ein durch eine Absenk- und Hubeinrichtung in den nach dem Befül len noch offenen Sack absenkbares und hebbares Saugrohr vorgesehen ist, daß die Öffnungsränder abklemmende, zangenartig zusammenwirkende Klemmleisten vor gesehen sind, die mit die Saugrohrmündung einfassenden Aussparungen versehen sind, und daß eine Steuerung vorgesehen ist, die die Schweißbacken unmittelbar nach dem Herausfahren des Saugrohrs zu einer Zeit schließen, in der sich die Klemmleisten noch in ihrer Klemmstellung befinden. Die erfindungsgemäße Vorrich tung gestattet es, aus dem bereits gefüllten Sack durch das Saugrohr überschüssige Luft durch eine Öffnung abzusaugen, deren Querschnitt im wesentlichen nur der Saugrohrmündung entspricht. Nach dem Ziehen des Saugrohrs verbleibt somit in dem Öffnungsrand des Sackes nur ein verhältnismäßig schmaler Spalt, den zuvor das Saugrohr eingenommen hatte, weil die übrigen Bereiche des Öffnungsrandes durch die Klemmleisten abgeklemmt und damit verschlossen sind. Da nach dem Ziehen des Saugrohrs sofort die Schweißbacken zusammenfahren und die den Sack verschließende Kopfschweißnaht anbringen, kann während der kurzen Öffnungszeit des Spalts nur eine vernachlässigbare Menge Luft in den Sack eintreten.A device for performing the method according to the invention with a the bags in the area of their opening edges on the side areas A pair of grippers with a filler that can be lowered and lifted into the open sacks zen and with a welding device that the superimposed opening edges the bags are closed by transverse welds, according to the invention by from that by a lowering and lifting device in the after filling len still open sack lowerable and liftable suction tube is provided that the Clamping strips that interlock with opening edges and interact like pliers are seen, which are provided with recesses enclosing the intake manifold mouth are, and that a control is provided that the welding jaws immediately after pulling out the intake manifold at a time when the Terminal strips are still in their clamped position. The Vorrich invention tion allows excess from the already filled sack through the suction pipe Extract air through an opening, the cross section of which is essentially only that Intake pipe mouth corresponds. After pulling the suction pipe, it remains in the opening edge of the sack only a relatively narrow gap, the previously the intake manifold had taken up because of the remaining areas of the opening edge are clamped by the terminal strips and thus closed. Since after Pulling the suction tube immediately pull the welding jaws together and the bag Apply a sealing head weld seam during the short opening time only a negligible amount of air enters the sack.
Der Öffnungsspalt kann zusätzlich dadurch kleiner gehalten werden, daß die Saug rohrmündung abgeflacht ist, so daß das Absaugen nur durch einen verhältnismäßig schmalen Spalt erfolgt.The opening gap can also be kept smaller in that the suction pipe mouth is flattened, so that the suction only by a proportionate narrow gap occurs.
Nach einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß parallel zu dem Saugrohr ein mit diesem absenk- und hebbares Meßrohr vorgesehen ist und daß die Klemmleisten mit das Meßrohr einfassenden Aussparungen versehen sind. Dieses Meßrohr mißt den durch das Saugrohr in dem gefüllten Sack erzeugten Un terdruck und beendet den Absaugvorgang, wenn ein gewünschter Unterdruck er reicht ist. Dieses Meßrohr ist in grundsätzlich gleicher Weise ausgebildet wie das Saugrohr, so daß auch der durch das Meßrohr bedingte schmale Öffnungsspalt zwi schen den Klemmleisten ebenfalls nur eine vernachlässigbare kleine Öffnung bildet, durch die während der kurzen Zeit des Ziehens von Saug- und Meßrohr bis zu dem Bilden der Kopfschweißnaht nur eine vernachlässigbare Menge Luft in den Sack eindringen kann.According to a preferred embodiment of the invention it is provided that parallel a suction tube which can be lowered and lifted with the suction tube is provided and that the terminal strips are provided with recesses enclosing the measuring tube. This measuring tube measures the Un generated by the suction tube in the filled bag terdruck and ends the suction process when a desired vacuum is enough. This measuring tube is designed in basically the same way as that Intake pipe, so that the narrow opening gap between the measuring pipe the terminal strips also only form a negligible small opening, through the during the short time of pulling the suction and measuring tube to the Form the head weld only a negligible amount of air in the sack can penetrate.
Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung nä her erläutert. In dieser ZeitAn embodiment of the invention is shown below with reference to the drawing ago explained. In these times
Fig. 1 eine perspektivische Ansicht der Mündungen des Saug- und Meßrohres während des Absenkens in den bereits gefüllten Sack mit noch geöffnetem Sackrand in schematischer Darstellung, Fig. 1 is a perspective view of the mouths of the suction and the measuring tube during the lowering in the already filled bag is still open edge of the bag in a schematic representation;
Fig. 2 eine der Fig. 1 entsprechende Darstellung, in der die Saug- und Meßrohrmündungen in den Sack abgesenkt und die den Sackrand abklemmenden Klemmleisten zusammengefahren sind, Fig. 2 shows one of Fig. 1 corresponding representation in which the suction and Meßrohrmündungen lowered into the bag and the bag edge abklemmenden clamping strips are moved together,
Fig. 3 eine den Fig. 1 und 2 entsprechende Darstellung, in der die Saug- und Meßrohrmündungen bereits den Sack wieder verlassen haben und die Schweißbacken zur Bildung der Kopfschweißnaht zusam mengefahren sind, und Fig. 3 is a FIGS. 1 and 2 corresponding representation in which the suction and Meßrohrmündungen have already left the bag again and the welding jaws are quantitative go together to form the weld head, and
Fig. 4 eine Seitenansicht der Einrichtung zum Abklemmen und Ver schließen der Säcke mit den Saug- und Meßrohren. Fig. 4 is a side view of the device for clamping and closing the bags with the suction and measuring tubes.
Das Herstellen der Säcke, das Befüllen der Säcke mit einem Füllgut und das Ver schließen sowie der Abtransport der gefüllten Säcke erfolgt in der grundsätzlich glei chen Weise, wie es in der EP 0 290 879 B1 beschrieben worden ist, auf die Bezug genommen wird.The manufacture of the bags, the filling of the bags with a filling material and the Ver closing and the removal of the filled sacks takes place in the same way Chen way, as described in EP 0 290 879 B1, to the reference is taken.
Aus Fig. 4 ist die Vorrichtung ersichtlich, in der die Säcke entlüftet und verschlossen werden, nachdem sie zuvor in einer Herstellungsstation hergestellt und in einer Be füllstation gefüllt worden sind. Den Transport der Säcke 1 von der nicht dargestellten Herstellungstation in die nicht dargestellte Befüllstation und von dieser in die aus Fig. 4 ersichtliche Station zum Entlüften und Verschließen der Säcke übernehmen zwei Transportgreiferpaare 2, 3 und 4, 5, die die Säcke in der aus den Fig. 1 bis 3 ersichtli chen Weise nur im Bereich ihrer Öffnungsränder an den Seitenbereichen bzw. den mit Seitenfalten versehenen Seitenbereichen erfassen.From Fig. 4 the device can be seen in which the bags are vented and closed after they have been previously manufactured in a manufacturing station and filled in a filling station. The transport of the bags 1 from the manufacturing station, not shown, into the filling station, not shown, and from there into the station shown in FIG. 4 for venting and closing the bags, are carried out by two pairs of transport grippers 2 , 3 and 4 , 5 , which remove the bags from Fig. 1 to 3 ersichtli chen way only in the area of their opening edges on the side areas or the side gussets provided.
In der nicht dargestellten Befüllstation fahren die den Sack haltenden Greifer 2, 3 und 4, 5 aufeinander zu, so daß die Seitenwände des Sackes im Öffnungsbereich durch nicht dargestellte Sauger aufgezogen werden können. In den derart geöffneten Sack fährt sodann in üblicher Weise der Füllstützen ein, so daß die Befüllung des Sackes beispielsweise mit einem Schüttgut erfolgen kann.In the filling station, not shown, the grippers 2 , 3 and 4 , 5 holding the sack move towards one another, so that the side walls of the sack can be opened in the opening area by suction devices, not shown. The filling support then moves into the sack opened in this way in the usual way, so that the sack can be filled, for example, with a bulk material.
Nach dem Füllen des Sackes transportieren oder verschwenken die Greifer den Sack bzw. den Öffnungsrand des Sackes in die aus Fig. 4 ersichtliche Verschließ station, in der die Greifer bereits in ihrer geöffneten Stellung dargestellt sind.After filling the sack, the grippers transport or pivot the sack or the opening edge of the sack into the sealing station shown in FIG. 4, in which the grippers are already shown in their open position.
In der Verschließstation fahren die Mündungen 6, 7 des Saugrohrs 8 und des Meß rohrs 9 in der aus Fig. 1 ersichtlichen Weise zwischen die noch teilweise geöffneten Ränder des Öffnungsrandes des Sackes 1. Sobald die Mündungen 6, 7 der Saug- und Meßrohre 8, 9 in den Sack hineingefahren sind, fahren die Klemmleisten 10, 11 zangenartig zusammen, wobei sie mit ihren Aussparungen 12, 13 die Mündungen 6, 7 einfassen. Durch klemmendes Zusammenfahren der Klemmleisten 10, 11 wird der Sack 1 an seinem Öffnungsrand bis auf die Öffnungen für die Saug- und Meßrohre abgeklemmt. Bereits vorher sind die Greifzangen 2, 3 und 4, 5 auseinandergefahren, wodurch sie den Sackrand straff gezogen haben, so daß die die Öffnung bildenden Ränder parallel zueinander verlaufen und flach aneinandergelegt werden.In the closing station, the mouths 6 , 7 of the suction tube 8 and the measuring tube 9 move in the manner shown in FIG. 1 between the still partially open edges of the opening edge of the bag 1 . As soon as the mouths 6 , 7 of the suction and measuring tubes 8 , 9 have moved into the sack, the terminal strips 10 , 11 move together like pliers, with their openings 12 , 13 enclosing the mouths 6 , 7 . By clamping the clamping strips 10 , 11 together , the sack 1 is clamped at its opening edge except for the openings for the suction and measuring tubes. The gripping tongs 2 , 3 and 4 , 5 have already moved apart beforehand, as a result of which they have pulled the sack edge taut, so that the edges forming the opening run parallel to one another and are placed flat against one another.
Nachdem die Saug- und Meßrohre 8, 9 in der beschriebenen Weise in den Sack eingefahren worden sind, erfolgt das Absaugen überschüssiger Luft in Richtung des Pfeils A. Sobald durch das Meßrohr 9 der gewünschte Unterdruck in dem Sack 1 gemessen worden ist, wird die Absaugung beendet. Die Saug- und Meßrohre 8, 9 werden in Richtung des Pfeils B aus dem Sack 1 herausgefahren und unmittelbar nach dem Herausfahren werden die die Kopfschweißnaht bildenden Schweißbacken 15, 16 in der aus Fig. 3 ersichtlichen Weise geschlossen, so daß der Sack durch ei ne Kopfschweißnaht versiegelt wird, bevor eine unerwünschte Menge von Luft in den Sack eindringen kann. Nach dem Anbringen der Kopfschweißnaht fördern die Greifer 2, 4 und 3, 5 den Sack ab. After the suction and measuring tubes 8 , 9 have been inserted into the sack in the manner described, excess air is drawn off in the direction of arrow A. As soon as the desired negative pressure in the sack 1 has been measured through the measuring tube 9 , the suction becomes completed. The suction and measuring tubes 8 , 9 are moved out of the bag 1 in the direction of arrow B and immediately after moving out, the welding jaws 15 , 16 forming the head weld seam are closed in the manner shown in FIG. 3, so that the bag by ei ne Head weld seam is sealed before an undesirable amount of air can enter the sack. After attaching the head weld, the grippers 2 , 4 and 3 , 5 remove the sack.
Bis auf das Ein- und Ausfahren der Saug- und Meßrohre 8, 9 und bis auf das Ab klemmen des Sackrandes durch die Klemmleisten 10, 11 erfolgt das Herstellen der Säcke, Befüllen der Säcke und das Verschließen und Abtransportieren der Säcke in der aus EP 0 290 879 B1 bekannten Weise, auf die zur weiteren Darstellung des Verfahrens und der Vorrichtung Bezug genommen wird.Except for the retraction and extension of the suction and measuring tubes 8 , 9 and up to the clamping of the edge of the sack by the terminal strips 10 , 11 , the sacks are manufactured, the sacks are filled and the sacks are closed and transported in the manner from EP 0 290 879 B1 known manner, to which reference is made to further illustrate the method and the device.
Die erfindungsgemäße Verschließeinrichtung ist aus Fig. 4 ersichtlich. Sie besteht aus einem in dem Gestell 20 um die Achse 21 schwenkbar gelagerten Rahmen 22. Der Rahmen 22 ist durch eine Druckmittel-Kolben-Zylindereinheit 23 um die Achse 21 verschwenkbar, um die Klemmleisten und Schweißbacken in den Bereich des zu verschließenden Sackrandes bringen zu können.The closing device according to the invention can be seen from FIG. 4. It consists of a frame 22 which is pivotally mounted in the frame 20 about the axis 21 . The frame 22 can be pivoted about the axis 21 by means of a pressure medium-piston-cylinder unit 23 in order to be able to bring the clamping strips and welding jaws into the area of the edge of the bag to be closed.
Die Klemmleisten 10, 11 sind an Zangenarmen 24, 25 befestigt, die in dem Rahmen 22 schwenkbar gelagert und durch Koppelglieder gegensinnig verschwenkbar mit einander verbunden sind. An dem oberen Zangenarm greift ein winkeliger Hebel 26 an, an den zu dessen Verschwenkung die Kolbenstange einer Druckmittel-Kolben- Zylindereinheit angelenkt ist.The terminal strips 10 , 11 are fastened to pliers arms 24 , 25 which are pivotally mounted in the frame 22 and are pivotally connected to one another by coupling links. On the upper gun arm an angular lever 26 engages, to the pivoting of which the piston rod of a pressure-piston-cylinder unit is articulated.
Die Schweißbacken 27, 28 sind an Zangenarmen 29, 30 befestigt, von denen der Zangenarm 30 auf der Achse 31 und der Zangenarm 29 auf der Achse 32 des Rah mens 22 schwenkbar gelagert sind. Die Zangenarme 29, 30 sind durch die Koppel 34 gegensinnig schwenkbar miteinander verbunden. Der Zangenarm 30 trägt winke lig den Betätigungshebel 35, an dem die Kolbenstange 36 einer Druckmittel-Kolben- Zylindereinheit 37 angelenkt ist.The welding jaws 27 , 28 are attached to gun arms 29 , 30 , of which the gun arm 30 on the axis 31 and the gun arm 29 on the axis 32 of the frame 22 are pivotally mounted. The tong arms 29 , 30 are pivotally connected to one another by the coupling 34 . The pliers arm 30 carries the actuating lever 35 at an angle, to which the piston rod 36 of a pressure medium piston-cylinder unit 37 is articulated.
Die Mündungen 6, 7 der Saug- und Meßrohre 8, 9 sind an einem nicht dargestellten Träger befestigt, der von der Kolbenstange 40 einer Druckmittel-Kolben-Zylinder einheit 41 hin- und herbewegbar ist.The mouths 6 , 7 of the suction and measuring tubes 8 , 9 are fastened to a support, not shown, which can be moved back and forth from the piston rod 40 of a pressure medium piston-cylinder unit 41 .
Claims (4)
dadurch gekennzeichnet,
daß ein durch eine Absenk- und Hubeinrichtung in den nach dem Befüllen noch offenen Sack (1) absenkbares und hebbares Saugrohr (6, 8) vorgesehen ist,
daß die Öffnungsränder der Säcke (1) abklemmende, zangenartig zusammen wirkende Klemmleisten (10, 11) vorgesehen sind, die mit die Saugrohrmündung (6) einfassenden Aussparungen (12) versehen sind, und
daß eine Steuerung vorgesehen ist, die die Schweißbacken (10,11) unmittel bar nach dem Herausfahren des Saugrohrs (6, 8) zu einer Zeit schließen, in der sich die Klemmleisten (10, 11) noch in ihrer Klemmstellung befinden.3. Apparatus for carrying out the method according to claim 1, with one of the sacks ( 1 ) in the region of their opening edges on their side regions, gripping the pair of grippers ( 2 , 3 , 4 , 5 ), with one in the opened sacks ( 1 ) which can be lowered and lifted Filling supports and with a welding device ( 15 , 16 , 27 , 28 ) which seals the opening edges of the bags ( 1 ) lying one above the other by transverse weld seams,
characterized,
that a suction pipe ( 6 , 8 ) which can be lowered and raised by a lowering and lifting device is provided in the sack ( 1 ) which is still open after filling,
that the opening edges of the sacks ( 1 ) are provided with clamping strips ( 10 , 11 ) which act in a pincer-like manner and which are provided with recesses ( 12 ) enclosing the mouth of the suction pipe ( 6 ), and
that a control is provided which close the welding jaws ( 10 , 11 ) immediately after moving out the suction tube ( 6 , 8 ) at a time when the terminal strips ( 10 , 11 ) are still in their clamping position.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997105743 DE19705743A1 (en) | 1997-02-14 | 1997-02-14 | Filling and closing thermoplastic sacks |
| NL1008196A NL1008196C2 (en) | 1997-02-14 | 1998-02-04 | Method and device for filling and closing bags open on one side |
| IT98BZ000005 IT1303475B1 (en) | 1997-02-14 | 1998-02-09 | PROCEDURE AND DEVICE FOR FILLING AND CLOSING BAGS OPENED ON ONE SIDE. |
| ES9800273A ES2151376B1 (en) | 1997-02-14 | 1998-02-12 | PROCEDURE AND DEVICE FOR FILLING AND CLOSING OPEN BAGS ON ONE SIDE. |
| JP10033291A JPH10230913A (en) | 1997-02-14 | 1998-02-16 | Method and device for charging and closing bag opened at one side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997105743 DE19705743A1 (en) | 1997-02-14 | 1997-02-14 | Filling and closing thermoplastic sacks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19705743A1 true DE19705743A1 (en) | 1998-08-20 |
Family
ID=7820294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1997105743 Withdrawn DE19705743A1 (en) | 1997-02-14 | 1997-02-14 | Filling and closing thermoplastic sacks |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPH10230913A (en) |
| DE (1) | DE19705743A1 (en) |
| ES (1) | ES2151376B1 (en) |
| IT (1) | IT1303475B1 (en) |
| NL (1) | NL1008196C2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1371556A1 (en) * | 2002-06-14 | 2003-12-17 | Toyo Jidoki Co., Ltd. | Deaerating method and apparatus for a bag filling machine |
| DE10232136A1 (en) * | 2002-07-12 | 2004-01-22 | Weber-Waagenbau und Wägeelektronik GmbH | Sack filling machine has suction system which removes residual air from sack after filling and integral weighing system which checks that correct amount of material has been dispensed into them |
| DE10350602A1 (en) * | 2003-10-26 | 2005-06-16 | Stregel, J.K.Hans, Dipl.-Ing. | Vacuum filling apparatus for solid or liquid product container, has tube which extends into container, which is sealed by gas-tight clamp or pressing device |
| DE102007030382A1 (en) * | 2007-06-29 | 2009-01-08 | Haver & Boecker Ohg | Method and device for welding bags |
| DE102008014489A1 (en) * | 2008-03-17 | 2009-09-24 | Haver & Boecker Ohg | Treatment device and method for treating an open bag filled with a bulk material |
| CN108528810A (en) * | 2017-03-06 | 2018-09-14 | 威光自动化科技股份有限公司 | Vacuum packaging method and device for square objects in plastic bag |
| DE202021105023U1 (en) | 2021-09-17 | 2022-12-22 | MBM innovations GmbH | Device for welding transport bags open on one side |
| DE102021124106A1 (en) | 2021-09-17 | 2023-03-23 | MBM innovations GmbH | Device for welding transport bags open on one side |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4828957B2 (en) * | 2006-02-15 | 2011-11-30 | 東洋自動機株式会社 | Degassing method or gas replacement method in automatic bagging and packaging |
| WO2013145113A1 (en) * | 2012-03-27 | 2013-10-03 | ゼネラルパッカー株式会社 | Packaging machine and packaging method for same |
| CN104528033A (en) * | 2014-12-11 | 2015-04-22 | 浙江海洋学院 | Novel vacuum-pumping device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5447183A (en) * | 1989-09-15 | 1995-09-05 | B.A.G. Corp. | Vacuum fill system |
| DE4141254A1 (en) * | 1991-12-14 | 1993-06-17 | Chronos Richardson Gmbh | BAG CLAMP DEVICE |
| DE4406605A1 (en) * | 1994-03-01 | 1995-09-07 | Bosch Gmbh Robert | Flow pack machine with a device for keeping the inside of a film tube free of dust in its sealing area |
-
1997
- 1997-02-14 DE DE1997105743 patent/DE19705743A1/en not_active Withdrawn
-
1998
- 1998-02-04 NL NL1008196A patent/NL1008196C2/en not_active IP Right Cessation
- 1998-02-09 IT IT98BZ000005 patent/IT1303475B1/en active IP Right Grant
- 1998-02-12 ES ES9800273A patent/ES2151376B1/en not_active Expired - Lifetime
- 1998-02-16 JP JP10033291A patent/JPH10230913A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1371556A1 (en) * | 2002-06-14 | 2003-12-17 | Toyo Jidoki Co., Ltd. | Deaerating method and apparatus for a bag filling machine |
| US6990790B2 (en) | 2002-06-14 | 2006-01-31 | Toyo Jidoki Co., Ltd. | Deaerating method and deaerating apparatus in a bag-filling packaging machine |
| DE10232136A1 (en) * | 2002-07-12 | 2004-01-22 | Weber-Waagenbau und Wägeelektronik GmbH | Sack filling machine has suction system which removes residual air from sack after filling and integral weighing system which checks that correct amount of material has been dispensed into them |
| DE10350602A1 (en) * | 2003-10-26 | 2005-06-16 | Stregel, J.K.Hans, Dipl.-Ing. | Vacuum filling apparatus for solid or liquid product container, has tube which extends into container, which is sealed by gas-tight clamp or pressing device |
| DE102007030382A1 (en) * | 2007-06-29 | 2009-01-08 | Haver & Boecker Ohg | Method and device for welding bags |
| DE102008014489A1 (en) * | 2008-03-17 | 2009-09-24 | Haver & Boecker Ohg | Treatment device and method for treating an open bag filled with a bulk material |
| CN108528810A (en) * | 2017-03-06 | 2018-09-14 | 威光自动化科技股份有限公司 | Vacuum packaging method and device for square objects in plastic bag |
| DE202021105023U1 (en) | 2021-09-17 | 2022-12-22 | MBM innovations GmbH | Device for welding transport bags open on one side |
| DE102021124106A1 (en) | 2021-09-17 | 2023-03-23 | MBM innovations GmbH | Device for welding transport bags open on one side |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2151376A1 (en) | 2000-12-16 |
| NL1008196C2 (en) | 1998-11-17 |
| JPH10230913A (en) | 1998-09-02 |
| ES2151376B1 (en) | 2001-06-16 |
| NL1008196A1 (en) | 1998-08-18 |
| ITBZ980005A1 (en) | 1999-08-09 |
| IT1303475B1 (en) | 2000-11-06 |
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| Date | Code | Title | Description |
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| 8130 | Withdrawal |