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DE1156016B - Wrapping machine - Google Patents

Wrapping machine

Info

Publication number
DE1156016B
DE1156016B DER27187A DER0027187A DE1156016B DE 1156016 B DE1156016 B DE 1156016B DE R27187 A DER27187 A DE R27187A DE R0027187 A DER0027187 A DE R0027187A DE 1156016 B DE1156016 B DE 1156016B
Authority
DE
Germany
Prior art keywords
film web
rails
pressure
imprints
magnet
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.)
Pending
Application number
DER27187A
Other languages
German (de)
Inventor
Reginald Frank Johnson
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.)
Rose Brothers Gainsborough Ltd
Original Assignee
Rose Brothers Gainsborough Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rose Brothers Gainsborough Ltd filed Critical Rose Brothers Gainsborough Ltd
Publication of DE1156016B publication Critical patent/DE1156016B/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/431Joining the articles to themselves
    • B29C66/4312Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24Joining 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
    • B29C65/30Electrical means
    • B29C65/305Electrical means involving the use of cartridge heaters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/03After-treatments in the joint area
    • B29C66/032Mechanical after-treatments
    • B29C66/0322Post-pressing without reshaping, i.e. keeping the joint under pressure after joining
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/03After-treatments in the joint area
    • B29C66/032Mechanical after-treatments
    • B29C66/0326Cutting, e.g. by using waterjets, or perforating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint 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
    • B29C66/112Single lapped joints
    • B29C66/1122Single lap to lap joints, i.e. overlap joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General 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
    • B29C66/814General 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
    • B29C66/8141General 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
    • B29C66/81411General 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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421General 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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81422General 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 characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being convex
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/81General 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
    • B29C66/816General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161General 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 mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822Transmission mechanisms
    • B29C66/8226Cam mechanisms; Wedges; Eccentric mechanisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/822Transmission mechanisms
    • B29C66/8226Cam mechanisms; Wedges; Eccentric mechanisms
    • B29C66/82261Wedges
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B29C66/83513Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums cooperating jaws mounted on rollers, cylinders or drums and moving in a closed path
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83531Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on chains
    • B29C66/83533Cooperating jaws mounted on cooperating chains and moving in a closed path
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/84Specific machine types or machines suitable for specific applications
    • B29C66/849Packaging machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00Supplying or feeding container-forming sheets or wrapping material
    • B65B41/18Registering sheets, blanks, or webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10Applying or generating heat or pressure or combinations thereof
    • B65B51/26Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/306Counter-rotating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General 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
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • B29C66/432Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/82Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824Actuating mechanisms
    • B29C66/8244Actuating mechanisms magnetically driven

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Description

Einwickelmaschine Die Erfindung bezieht sich auf eine Einwickelmaschine, bei der die einzuwickelnden Gegenstände in Abstand nacheinander auf eine mit Aufdrucken versehene, kontinuierlich horizontal geförderte Folienbahn aus verschweißbarem Werkstoff gelangen, die schlauchförmig um die Gegenstände herumgelegt und zunächst in einer Längsnaht, anschließend zwischen je zwei aufeinanderfolgenden Gegenständen in Querrichtung verschweißt wird.Wrapping machine The invention relates to a wrapping machine, in which the objects to be wrapped are spaced one after the other on one with an imprint provided, continuously horizontally conveyed film web made of weldable material get that tubular around the objects and first in a Longitudinal seam, then between two consecutive objects in the transverse direction is welded.

Bei Einwickelmaschinen, die mit derartigen mit Aufdrucken versehenen Folienbahnen betrieben werden, ist es bekannt. jedem Aufdruck eine Steuermarke zuzuordnen, die einen Teil des Aufdruckmusters bilden oder gesondert hiervon vorgesehen sein kann und beim Fördern der Folienbahn an einer photoelektrischen Zelle vorbeikommt, die in dem Abstand der Steuermarken entsprechenden Zeitintervallen kurzzeitig eingeschaltet wird und eine Schaltgebung nur dann veranlaßt, wenn sich im Augenblick ihres Einschaltens eine der Steuermarken nicht im Bereich der photoelektrischen Zelle befindet. Die Schaltgebung bewirkt dann das Einschalten einer magnetisch gesteuerten Vorrichtung, die die Geschwindigkeit der Folienbahn korrigiert. In the case of wrapping machines that are provided with such with imprints Foil webs are operated, it is known. assign a tax stamp to each imprint, which form part of the imprint pattern or be provided separately from it can and passes a photoelectric cell when conveying the film web, the time intervals corresponding to the distance between the tax marks are switched on for a short time and a switching is only initiated if it is at the moment it is switched on one of the tax stamps is not in the area of the photoelectric cell. the Switching then causes a magnetically controlled device to be switched on, which corrects the speed of the film web.

So ist es bekannt, bei einer Maschine zum Herstellen gefüllter Beutel aus einem senkrecht geförderten Folienschlauch, der durch eine auf- und niedergehende Klemmvorrichtung absatzweise beim Niedergehen der Klemmvorrichtung erfaßt und hierbei jeweils um die Länge eines Beutels gefördert wird, die Klemmvorrichtung bei einer Schaltgebung der Photozelle mittels eines magnetisch gesteuerten Stellgetriebes so zu beeinflussen, daß die Verklemmung der Folienbahn vorzeitig gelöst und hierdurch die Förderstrecke der Folienbahn verkürzt wird, um die Übereinstimmung der Aufdrucke wiederherzustellen. It is known, for example, in a machine for producing filled bags from a vertically conveyed film tube, which is connected by a rising and falling Clamping device detected intermittently when the clamping device goes down and this is conveyed in each case by the length of a bag, the clamping device at a Switching of the photocell by means of a magnetically controlled actuator to influence so that the jamming of the film web is prematurely released and thereby the conveying distance of the film web is shortened in order to match the imprints restore.

Bei einer anderen bekannten Verpackungsmaschine, in der Beutel aus einzelnen Abschnitten einer bedruckten Folienbahn gefertigt werden, wird von der Vorratsrolle absatzweise je ein Streifen der Folienbahn abgezogen, der etwas kürzer ist als die Länge des zu formenden Beutels. Weiter unten führen auf-und abgehende und sich öffnende und schließende Greifer einen Hub aus, der etwas länger ist als die Länge der herzustellenden Beutel. Am Ende der Greifer tritt dann normalerweise ein Schlupf zwischen ihnen und der von ihnen eingeschlossenen Folienbahn ein. In Abhängigkeit von der Vorbeibewegung der auf der Folienbahn angebrachten Steuermarken an einer Photozelle wird den Greifern jeweils eine zusätzliche Länge an Folienbahn zugeführt. In another known packaging machine, in the bag out individual sections of a printed film web are produced, is made by the One strip of the film web is withdrawn intermittently, the slightly shorter one is than the length of the bag to be formed. Below lead up and down and opening and closing grippers exclude a stroke that is slightly longer than the length of the bags to be produced. At the end of the gripper then normally occurs a slip between them and the film web enclosed by them. In Depending on the movement past the tax stamps attached to the film web Each gripper receives an additional length of film on a photocell fed.

Bei einer Einwickelmaschine mit kontinuierlich von umlaufenden Förderwalzen angetriebener Folienbahn hat man vorgeschlagen, durch die lichtelektrische Schaltgebung jeder Steuermarke eine auf die Folienbahn einwirkende Bremse auszulösen, die auf der Zuführungsseite an der Folienbahn zur Anlage kommt und deren Fördergeschwindigkeit durch die Bremsung auf kürzere oder längere Zeit vermindert, wobei zwischen den Förderwalzen und der Folienbahn ein Schlupf entsteht, der durch eine zusätzliche Verminderung des Anlagedruckes der Förderwalzen während der Bremsung der Folienbahn begünstigt werden kann. In a wrapping machine with continuously rotating conveyor rollers driven film web has been proposed by the photoelectric switching each tax stamp to trigger a brake acting on the film web, which on the feed side comes into contact with the film web and its conveying speed reduced by the braking for a shorter or longer period, with between the Conveyor rollers and the film web a slip occurs, which is caused by an additional Reduction of the contact pressure of the conveyor rollers during braking of the film web can be favored.

Die Erfindung knüpft an die zuerst erläuterte bekannte Maschine an. Ihr liegt die Aufgabe zugrunde, die bei unstimmiger Lage der Aufdrucke hergestellte Übereinstimmung zu verwirklichen, wenn eine waagerechte Folienbahn vorhanden ist, die etwas schneller als erforderlich vorwärts bewegt wird. Um dies auf einfache Weise zu erreichen, sind erfindungsgemäß im Förderweg einer waagerechten Folienbahn hinter den die Querverschweißungen herstellenden, in Förderrichtung der Bahn umlaufenden Schweißbacken mit diesen synchron umlaufende obere und untere Förderketten mit im Abstand der Querverschweißungen auf die Kettenlänge verteilt angeschlossenen Klemmgliedern kontinuierlich angetrieben, von denen jeweils ein Klemmgliederpaar die Folienbahn erfaßt, ehe ein anderes Paar die Klemm- stellung verläßt, und die Bahn während des Erfassens etwas schneller als erforderlich vorwärts bewegt, daß ferner die am unteren Trum der oberen Förderkette sitzenden Klemmglieder zum Herstellen der Klemmung durch abgefederte Andrückschienen belastet sind und daß der von der Photozelle gesteuerte Magnet ein diese Andrückschienen aus der Belastungsstellung kurzzeitig anhebendes Stellgetriebe einschaltet, das durch die Verminderung des Anpreßdruckes die Vorwärtsbewegung der Folienbahn verzögert, bis der Aufdruck in die richtige Lage kommt. The invention is based on the known machine explained first. It is based on the task that is produced when the position of the imprints is inconsistent To achieve conformity if a horizontal film web is available, which is moved forward a little faster than necessary. To make this simple Way to achieve are according to the invention in the conveying path of a horizontal film web behind those that produce the transverse welds and run around in the conveying direction of the web Welding jaws with these synchronously circulating upper and lower conveyor chains with im Distance of the cross welds distributed over the chain length of connected clamping links continuously driven, each of which has a pair of clamping members, the film web captured before another pair of clamps position leaves, and the Web moves forward a little faster than required during acquisition furthermore, the clamping links for manufacturing which are seated on the lower run of the upper conveyor chain the clamping are loaded by spring-loaded pressure rails and that of the Photo cell controlled magnet pulls these pressure rails out of the load position briefly lifting actuator switches on, which by reducing the Contact pressure delays the forward movement of the film web until the imprint is in the right location comes.

Hierbei wird also weder mit einer Verkürzung des Stellweges hin- und hergehender Antriebsklemmen, noch mit einer Bremsung der Folienbahn gearbeitet, und der zeitweilige Antriebs schlupf ist bei jeder Betätigung des Stellgetriebes nur äußerst kurz. Reicht er bei einmaliger Betätigung des Stellgetriebes zur Wiederherstellung der Aufdruck übereinstimmung nicht aus, so führt die wiederholte Betätigung zu einem für die Wiederherstellung der Aufdruckübereinstimmung ausreichenden Nachlassen der Folienbahn. In this case, neither a shortening of the travel and incoming drive clamps, still worked with a braking of the film web, and the temporary drive slip is with each actuation of the actuator only extremely briefly. If it is enough to restore it with a single actuation of the actuator If the imprint does not match, repeated actuation leads to a for the restoration of the imprint consistency, there is sufficient slackening of the Film web.

In bevorzugter Ausführung der Erfindung weist das die Andrückschienen kurzzeitig anhebende Stellgetriebe paarweise oberhalb der Andrückschienen nebeneinanderliegende, parallel zu den Andrückschienen angeordnete Nockenschienen und Betätigungsstangen auf, die in ihrer Längsrichtung verschiebbar und durch eine vom Magneten betätigte Verriegelungsschiene kuppelbar sind, wobei die Nockenschienen zum Anheben der Andrückschienen dienende Keilnocken tragen und die Betätigungsstangen von auf einer Kettenradwelle sitzenden Nockenscheiben in hin- und hergehende Bewegung versetzbar sind. In a preferred embodiment of the invention, this has the pressure rails briefly lifting actuators in pairs above the pressure rails adjacent, Cam rails and actuating rods arranged parallel to the pressure rails on, which is displaceable in its longitudinal direction and actuated by a magnet Locking rails can be coupled, the cam rails for lifting the pressure rails Carrying serving spline cams and the operating rods on a sprocket shaft seated cam disks are displaceable in reciprocating motion.

Zur Herstellung der Kupplungsverbindung zwischen den verschiebbaren Nockenschienen und den ständig hin- und hergehenden Betätigungsstangen sind zweckmäßig die paarweise zusammenliegenden Nockenschienen und Betätigungsstangen des Stellgetriebes mit in der Belastungsstellung der Andrückschienen sich deckenden Kupplungseinschnitten versehen, in welche die vom Magneten betätigte Verriegelungsschiene beim Anziehen des Magnetankers einrastet. To establish the coupling connection between the sliding Cam rails and the continuously reciprocating operating rods are useful the cam rails and actuating rods of the actuating gear that lie together in pairs with coupling notches that overlap in the loading position of the pressure rails provided, in which the locking bar actuated by the magnet when tightened of the armature engages.

In der Zeichnung ist ein Beispiel für die Ausführung der Einwickelmaschine nach der Erfindung dargestellt, und zwar zeigt Fig. 1 eine Seitenansicht der Verschweiß- und Vorschubeinrichtung der Einwickelmaschine, Fig. 2 eine Stirnansicht der in Fig. 1 gezeigten Teile und Fig. 3 eine Teilansicht von oben. The drawing shows an example of the design of the wrapping machine shown according to the invention, namely Fig. 1 shows a side view of the welding and feed device of the wrapping machine, FIG. 2 is an end view of the in FIG. 1 and FIG. 3 is a partial view from above.

Eine endlose Bahn 11 aus verschweißbarer Kunststoffolie, die durch eine Längsnaht in Schlauchform gebracht ist und in regelmäßigen Abständen die einzuwickelnden Gegenstände 12 enthält, wird durch gemeinsame Einwirkung einer Verschweißvorrichtung 13 und einer ziehenden Vorschubrichtung 14 vorwärts bewegt. Die beiden Vorrichtungen werden synchron angetrieben. Die Verschweißvorrichtung 13 besteht aus zwei mit gleicher Geschwindigkeit umlaufenden, je drei Schweißarme 16 aufweisenden Speichensternen, deren Arme mit Heizkörpern 17 versehen sind, jeweils zu zweit die schlauchartige Folienbahn 11 zwischen zwei Gegenständen 12 zusammendrücken und ihre beiden Wände miteinander verschweißen. An endless web 11 made of weldable plastic film, which by a longitudinal seam is brought into the shape of a tube and the to be wrapped at regular intervals Contains objects 12, is by the joint action of a welding device 13 and a pulling feed direction 14 moved forward. The two devices are driven synchronously. The welding device 13 consists of two with the same Speed of rotating spoke stars each with three welding arms 16, the arms of which are provided with radiators 17, in pairs the hose-like Press the film web 11 between two objects 12 and both of their walls weld together.

Die Vorschubvorrichtung 14 besteht aus zwei Paaren miteinander zusammenarbeitender Förderketten 18, die in regelmäßigen Abständen Klemmglieder 19 aufweisen, die mit entsprechenden Gliedern der zugeordneten Kette zusammenarbeiten und die Folienbahn jeweils zwischen zwei Gegenständen 12 an den zuvor verschweißten Stellen erfassen. Sie pressen die verschweißten Wände noch eine Weile zusammen und verbessern damit die Schweißverbindung, während sie gleichzeitig eine sichere Weiterförderung der Folienbahn mit den eingeschlossenen Gegenständen bewirken. Die am Ende des Förderweges der Kettenpaare 18 befindlichen Kettenräder bilden eine Abschneidvorrichtung. Hierzu sitzen auf den Wellen 23 dieser Kettenräder Speichensterne 21 mit Messern 22, die die Folienbahn 11 jeweils zwischen zwei Gegenständen in der Mitte ihrer Querverschweißungen durchschneiden. Auf diese Weise entstehen einzelne Päckchen, die hinter den Speichensternen 21 auf ein Förderband 24 abgeworfen werden. The feed device 14 consists of two pairs of cooperating with each other Conveyor chains 18, which have clamping members 19 at regular intervals that with corresponding links of the associated chain work together and the film web each grasp between two objects 12 at the previously welded points. They still press the welded walls together for a while and thus improve the welded joint, while at the same time ensuring safe further conveyance of the Effect film web with the enclosed objects. The one at the end of the conveyor path of the chain pairs 18 located sprockets form a cutting device. For this sit on the shafts 23 of these sprockets spoke stars 21 with knives 22, the the film web 11 in each case between two objects in the middle of their transverse welds cut through. In this way, individual packages are created behind the spoke stars 21 are dropped onto a conveyor belt 24.

Der Klemmdruck zwischen den Klemmgliedern 19 wird durch zwei seitlich mit Abstand voneinander angeordnete Andrückschienen 26 ausgeübt, die sich von oben gegen die unteren Trums der beiden oberen Ketten 18 anlegen und deren Klemmglieder 19 gegen diejenigen der unteren Ketten drücken. Die beiden Andrückschienen 26 sind je mit zwei nach oben gerichteten Stangen 27 versehen, mit denen sie in lotrechter Richtung verschiebbar in stationären Lagergehäusen 28 geführt sind. Jede Stange 27 ist mit einer frei drehbaren Rolle 29 versehen, die in der Bahn eines Nockens 31 angeordnet ist, der an einer in einer Führungsbahn 33 horizontal verschiebbaren Nockenschiene 32 vorgesehen ist. Jeder Andrückschiene 26 ist eine Nockenschiene 32 zugeordnet, und jede Nokkenschiene ist mit zwei Nocken 31 versehen, von denen jeder mit einer der an den Stangen 27 gelagerten Rollen 29 in Eingriff kommt. The clamping pressure between the clamping members 19 is by two laterally at a distance from each other pressure rails 26 exerted, which extend from above apply against the lower run of the two upper chains 18 and their clamping links 19 press against those of the lower chains. The two pressure rails 26 are each provided with two upward rods 27 with which they are perpendicular Direction are guided displaceably in stationary bearing housings 28. Every pole 27 is provided with a freely rotatable roller 29 which is in the path of a cam 31 is arranged, which is horizontally displaceable in a guide track 33 on a Cam rail 32 is provided. Each pressure rail 26 is a cam rail 32 assigned, and each cam rail is provided with two cams 31, of which each comes into engagement with one of the rollers 29 mounted on the rods 27.

Die Nockenschienen 32 sind in ihrer Unterfläche je mit einem Querschlitz34 versehen. Beide Querschlitze arbeiten mit einer querliegenden Verriegelungsschiene 36 zusammen, die an einem Elektromagneten 37 befestigt ist, der durch eine nicht dargestellte photoelektrische Zelle gesteuert wird. Die Photozelle wirkt mit auf der Folie 11 in regelmäßigen Abständen vorgesehenen Marken zusammen. Neben jeder Nockenschiene 32 ist eine Betätigungsstange 38 vorgesehen, die ebenfalls mit einem Querschlitz 39 versehen ist, der normalerweise mit dem Querschlitz 34 der Nockenschiene 32 übereinstimmt. Die Betätigungsstangen 38 weisen an einem Ende je eine Rolle 41 auf. Die beiden Rollen arbeiten mit einem umlaufenden Nocken 42 zusammen, der mehrere Nasen 43 hat, deren Abstand demjenigen der aufeinanderfolgenden Gegenstände bzw. der bedruckten Folienteile entspricht. The cam rails 32 are each provided with a transverse slot 34 in their lower surface Mistake. Both transverse slots work with a transverse locking bar 36 together, which is attached to an electromagnet 37, which is not by a illustrated photoelectric cell is controlled. The photocell has an effect the foil 11 at regular intervals provided brands together. Next to everyone Cam rail 32, an actuating rod 38 is provided, which is also with a Transverse slot 39 is provided, which is normally with the transverse slot 34 of the cam rail 32 matches. The actuating rods 38 each have a roller 41 at one end on. The two rollers work together with a rotating cam 42, the several Has noses 43, the distance between which corresponds to that of the successive objects or corresponds to the printed film parts.

Die Folienbahn 11 wird etwas schneller als erforderlich vorwärts bewegt, und die photoelektrische Einrichtung ist so ausgebildet, daß sie in Tätigkeit tritt, wenn eine der auf der Folie vorgesehenen Marken sich nicht im richtigen Augenblick in dem Bereich der photo elektrischen Zelle befindet. Ist dies der Fall, so wird der Elektromagnet 37 unter Strom gesetzt, wodurch die Verriegelungsschiene 36 in die Schlitze34 der Nockenschienen 32 und der Betätigungsstangen 38 hineinbewegt wird. Der umlaufende Nocken 42 arbeitet in solcher zeitlicher Abstimmung mit der photoelektrischen Einrichtung, daß die Querschlitze 34 und 39 miteinander übereinstimmen, wenn der Elektromagnet 37 unter Strom gesetzt wird. The film web 11 is forward a little faster than necessary moved, and the photoelectric device is adapted to be in operation occurs when one of the marks provided on the slide does not appear at the right moment located in the area of the photoelectric cell. If this is the case, then will the electromagnet 37 is energized, whereby the locking bar 36 in the slots 34 of the cam rails 32 and the actuating rods 38 are moved into it will. The rotating cam 42 works in such timing with the photoelectric device that the transverse slots 34 and 39 together match when the electromagnet 37 is energized.

Die Nockenschienen 32 werden dann durch die Betätigungsstangen 38 unter Vermittlung der Verriegelungsschienen 36 so bewegt, daß sie mit ihren Nocken 31 die Andrückschienen 26 entgegen der Wirkung der ihnen zugeordneten Federn 35 kurzzeitig anheben. Sie ermöglichen hierdurch ein Rutschen der Folienbahn 11 zwischen den Klemmgliedern 19, so daß durch die Verminderung des Anpreßdruckes die Vorwärtsbewegung der Folienbahn so verzögert wird, bis der Aufdruck in die richtige Lage kommt. Dieser Vorgang wird selbsttätig so oft wiederholt, wie es nötig ist, damit die auf der Folienbahn vorgesehenen Marken jeweils im richtigen Augenblick in den Bereich der photoelektrischen Zelle gelangen.The cam rails 32 are then driven by the operating rods 38 with the mediation of the locking rails 36 moved so that they with their cams 31 the pressure rails 26 counter to the action of the springs 35 assigned to them lift briefly. In this way, they enable the film web 11 to slide between the clamping members 19, so that the forward movement by reducing the contact pressure the film web is delayed until the imprint comes into the correct position. This The process is repeated automatically as often as necessary so that the Foil web marks provided in each case at the right moment in the area of the photoelectric cell.

Claims (3)

PATENTANSPRÜCHE: 1. Einwickelmaschine, bei der die einzuwickelnden Gegenstände in Abstand nacheinander auf eine mit Aufdrucken versehene Folienbahn aus verschweißbarem Werkstoff gelangen, die schlauchförmig um die Gegenstände herumgelegt und zunächst in einer Längsnaht, sodann zwischen je zwei aufeinanderfolgenden Gegenständen in Querrichtung verschweißt sind, wobei die richtige Lage der Aufdrucke auf den fertigen Packungen durch eine von den Aufdrucken oder von ihnen zugeordneten Steuermarken der Folienbahn beeinflußte Photozelle gesteuert wird, die bei unstimmiger Lage der Aufdrucke über einen ihr zugeordneten Magneten durch Lüften der Fördermittel der Folienbahn einen die Übereinstimmung der Aufdrucke wiederherstellenden Schlupf im Vorschub der Folienbahn verursacht, dadurch gekennzeichnet, daß im Förderweg einer waagerechten Folienbahn (11) hinter den die Querverschweißungen herstellenden, in Förderrichtung der Folienbahn umlaufenden Schweißbacken (16, 17) mit diesen synchron umlaufende obere und untere endlose Förderketten (18) mit im Abstand der Querverschweißungen auf die Kettenlänge verteilt angeschlossenen Klemmgliedern (19) kontinuierlich angetrieben sind, von denen jeweils ein Klemmgliederpaar die Folienbahn erfaßt, ehe ein anderes Paar die Klemmstellung verläßt, und die Bahn etwas schneller als erforderlich vorwärts bewegt, daß ferner die am unteren Trum der oberen Förderkette sitzenden Klemmglieder (19) zum Herstellen der Klemmung durch abgefederte Andrückschienen (26) belastet sind und daß der von der Photozelle gesteuerte Magnet (37) ein diese Andrückschienen aus der Belastungsstellung kurzzeitig anhebendes Stellgetriebe (31 bis 43) einschaltet, das durch die Verminderung des Anpreßdruckes die Vorwärtsbewegung der Folienbahn verzögert, bis der Aufdruck in die richtige Lage kommt. PATENT CLAIMS: 1. Wrapping machine in which the Objects spaced one after the other on a foil web provided with imprints come from weldable material, which are placed around the objects in the form of a hose and first in a longitudinal seam, then between two consecutive objects are welded in the transverse direction, with the correct position of the imprints on the finished packs by one of the imprints or tax stamps assigned by them the film web influenced photocell is controlled, which in the case of inconsistent position of the Imprints via a magnet assigned to it by venting the conveying means of the Foil web a slip in restoring the conformity of the imprints Caused advance of the film web, characterized in that one in the conveying path horizontal film web (11) behind the transverse welds producing, in Direction of conveyance of the film web rotating welding jaws (16, 17) synchronously with these Circumferential upper and lower endless conveyor chains (18) with the spacing of the transverse welds Clamping links (19) connected distributed over the length of the chain are driven continuously are each one of which Clamping members pair detected the film web before another Couple leaves the clamping position and moves forward a little faster than necessary moved that also seated on the lower run of the upper conveyor chain clamping members (19) loaded by spring-loaded pressure rails (26) to establish the clamping and that the magnet (37) controlled by the photocell is one of these pressure bars switches on the actuating gear (31 to 43) that lifts briefly from the load position, the forward movement of the film web by reducing the contact pressure delayed until the print is in the right position. 2. Einwickelmaschine nach Anspruch 1, dadurch gekennzeichnet, daß das die Andrückschienen (26) kurzzeitig anhebende Stellgetriebe (31bis 43) paarweise oberhalbderAndrückschienen nebeneinanderliegende, parallel zu den Andrückschienen angeordnete Nockenschienen (32) und Betätigungsstangen (38) aufweist, die in ihrer Längsrichtung verschiebbar und durch eine vom Magneten (37) betätigte Verriegelungsschiene (36) kuppelbar sind, wobei die Nockenschienen (32) zum Anheben der Andrückschienen (26) dienende Keilnocken (31) tragen und die Betätigungsstangen (38) von auf einer Kettenradwelle sitzenden Nockenscheiben (42, 43) in hin- und hergehende Bewegung versetzbar sind. 2. Wrapping machine according to claim 1, characterized in that the adjusting gear (31 to 43) which briefly lifts the pressure rails (26) in pairs Above the pressure rails adjacent to each other, parallel to the pressure rails arranged cam rails (32) and actuating rods (38) in their Slidable in the longitudinal direction and by a locking rail actuated by the magnet (37) (36) can be coupled, the cam rails (32) for lifting the pressure rails (26) serving wedge cams (31) and the actuating rods (38) from on one Sprocket shaft seated cam disks (42, 43) in reciprocating motion are relocatable. 3. Einwickelmaschine nach Anspruch 2, dadurch gekennzeichnet, daß die paarweise zusammenliegenden Nockenschienen (32) und Betätigungsstangen(38) des Stellgetriebes (31 bis 43) mit in der Belastungsstellung der Andrückschienen (26) sich deckenden Kupplungseinschnitten (34) versehen sind, in welche die vom Magnet (37) betätigte Verriegelungsschiene (36) beim Anziehen des Magnetankers einrastet. 3. Wrapping machine according to claim 2, characterized in that the paired cam rails (32) and actuating rods (38) of the Adjusting gear (31 to 43) with the pressure rails (26) in the load position congruent coupling notches (34) are provided, in which the magnet (37) actuated locking bar (36) engages when the magnet armature is tightened. In Betracht gezogene Druckschriften: Deutsche Auslegeschrift Nr. 1 526; USA.-Patentschrift Nr. 2636732. Documents considered: German Auslegeschrift No. 1,526; U.S. Patent No. 2636732. In Betracht gezogene ältere Patente: Deutsches Patent Nr. 1 066476. Older patents considered: German Patent No. 1 066476.
DER27187A 1959-02-11 1960-01-26 Wrapping machine Pending DE1156016B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996016868A1 (en) * 1994-11-29 1996-06-06 The Procter & Gamble Company Packaging apparatus and method for preventing separation of package seals

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636732A (en) * 1948-03-30 1953-04-28 Pneumatic Scale Corp Web feeding method and means for container forming apparatus
DE1046526B (en) * 1953-04-11 1958-12-11 Hansella N V Machine for the production of filled bags

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2636732A (en) * 1948-03-30 1953-04-28 Pneumatic Scale Corp Web feeding method and means for container forming apparatus
DE1046526B (en) * 1953-04-11 1958-12-11 Hansella N V Machine for the production of filled bags

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996016868A1 (en) * 1994-11-29 1996-06-06 The Procter & Gamble Company Packaging apparatus and method for preventing separation of package seals
AU710426B2 (en) * 1994-11-29 1999-09-23 Procter & Gamble Company, The Packaging apparatus and method for preventing separation of package seals

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