EP2024167A2 - Device for welding a film web - Google Patents

Device for welding a film web

Info

Publication number
EP2024167A2
EP2024167A2 EP07723679A EP07723679A EP2024167A2 EP 2024167 A2 EP2024167 A2 EP 2024167A2 EP 07723679 A EP07723679 A EP 07723679A EP 07723679 A EP07723679 A EP 07723679A EP 2024167 A2 EP2024167 A2 EP 2024167A2
Authority
EP
European Patent Office
Prior art keywords
jaw
welding
parts
holder
secondary part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07723679A
Other languages
German (de)
French (fr)
Inventor
Roman Kammler
Ralf Bardtke
Walter Baur
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.)
Rovema GmbH
Original Assignee
Rovema Verpackungsmaschinen GmbH and Co KG
Rovema 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 Rovema Verpackungsmaschinen GmbH and Co KG, Rovema GmbH filed Critical Rovema Verpackungsmaschinen GmbH and Co KG
Publication of EP2024167A2 publication Critical patent/EP2024167A2/en
Withdrawn legal-status Critical Current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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8244—Actuating mechanisms magnetically driven
    • 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
    • B29C65/74—Joining 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
    • B29C65/745—Joining 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 using a single unit having both a severing tool and a welding tool
    • 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
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools 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
    • B29C66/83—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
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General 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
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
    • B29C66/83543—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement cooperating flying jaws
    • 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
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • B29C2793/0045—Perforating
    • 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
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making machines
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0007—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/001—Tubular films, sleeves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means

Definitions

  • the invention relates to the packaging machine construction and there a drive mechanism for mutually movable welding jaws on vertical bagging machines.
  • DE 195 35 510 A1 discloses a device with two mutually movable welding jaws for welding a film web converted into a film tube. Each jaw is connected via a jaw holder with a separate jaw carrier. A drive is connected via a mechanism with the jaw carriers to perform an opposite jaw movement when using the drive, which has two linear motors.
  • the linear motors each have a primary part and a secondary part.
  • the known device has the disadvantage that it is relatively bulky, since the parts of the two linear motors (electromagnetic linear actuators) are designed separately.
  • the object is solved according to the characterizing part of claim 1. Thereafter, the two secondary parts are connected to each other via a magnetic shield and thus form a structural unit.
  • the proposed innovation has the advantage that two secondary parts are structurally combined, whereby a compact design is achieved.
  • a magnetic shield is provided between the secondary parts.
  • This can be made of an electrically conductive material, in particular a metal. The material must not be magnetizable.
  • such a connection may be such that the magnets of the separate secondaries are mounted on opposite sides of the shield.
  • a separate support for the secondary parts can be provided, and the shield acting for both secondary parts only separates these parts.
  • the secondary parts are aligned parallel to one another (claim 2), different movements in one direction can be generated by a relative movement of the linear motors in order to move the welding jaws. If, on the other hand, according to claim 3, the secondary parts are aligned at a right angle to each other and thus form a cross, perpendicular or mutually different movements of a jaw can be generated, in particular special on the one hand to raise and lower the jaw stick, and on the other hand while the welding jaws to open and close.
  • Another advantage of the compact unit as a drive element for the welding jaws is its warping stability when the secondary parts are mounted on different sides of serving as a holder shield (claim 6).
  • the secondary parts mounted on opposite sides of the shield are similar in their inclination due to their own heating to curve the shield from.
  • the assembly remains at high power and appropriate heating of the secondary parts without significant delay.
  • a magnetic shield are non-magnetizable light metals, such as aluminum and magnesium (claim 4), whereby the movable assembly is also relatively easy.
  • the shield can be equal to the holder, whereby a component is saved.
  • Adhesion of the secondary part segments a heating-related, relatively strong longitudinal expansion of the secondary part segments not to a curvature of
  • Suitable fasteners are screws, rivets and adhesives (claim 8).
  • the device may be part of a vertical bagging machine or a horizontal bagging machine (claim 9).
  • Figure 1 is a top view of an apparatus for welding a film tube of a vertical bagging machine with two linear motors for separately driving each of a welding jaw with open welding jaws, wherein the secondary parts of the linear motors are contained in a structural unit;
  • Figure 2 is a side view of the assembly of Figure 1, wherein each one attached to a connection to a welding jaw primary part is movable relative to a secondary part, and is provided between the secondary parts of a magnetic shield;
  • Figure 3 is a top view of the device of Figure 1, but with closed welding jaws;
  • Figure 4 is a side view of a unit with two secondary parts, wherein the secondary parts are each composed of a juxtaposition of separate secondary subsegments;
  • Figure 5 is a top view of a device analogous to Figure 1, but with a secondary part analogous to Figure 4;
  • FIG. 7 is a side view in a further embodiment of a drive having two superimposed linear motors and a two secondary parts containing assembly to move a jaw mechanism;
  • Figure 8 is a side view of a device for moving a
  • Jaw sticks in the vertical direction and for opening and closing the welding jaws in the horizontal direction, wherein the drive comprises two linear motors whose secondary parts aligned at a right angle to each other and a magnetic shield within a
  • each welding jaw 2, 3 is connected via a jaw holder 6 to a separate jaw carrier 7, 8 (FIGS. 1, 2 and 3) ).
  • a drive 9 is connected via a mechanism to the jaw carriers 7, 8 in order to carry out an opposite jaw movement when linear motors 10, 11 are used.
  • As drive 9 two juxtaposed and parallel to each other linear motors 10, 1 1, each with a primary part 12, 14 and a respective secondary part 13, 15 are provided.
  • a movable part of the linear motor 10, 1 1 is connected via joints 27 and via a connection 16, 17 with a jaw carrier 7, 8.
  • the compounds 16, 17 are guided by guides 25 in the horizontal direction.
  • the welding jaws 2, 3 are part of a transverse sealing station of a vertical bagging machine.
  • a deflectable separating knife 28 in a welding jaw 2 serves to separate a finished tubular bag from the film tube 5.
  • the linear motors 10, 1 1 is in each case the secondary part 13, 15 stationary and the primary part 12, 14 designed as a movable part.
  • two guides 25 are connected, along which slides (not shown) of the movable primary parts 12, 14.
  • the attached to the connections 16, 17 primary parts 12, 14 have a common (not shown) cooling and electrical supply.
  • the linear motors 10, 1 1 can offset the welding jaws 2, 3 by moving their primary parts 12, 14 separately and as desired. They can be operated in dependence of any diameter of a film tube 5 with respect to a maximum distance of the welding jaws 2, 3 from each other to always perform a minimum, sufficient for a welding jaw movement.
  • the plane of incidence of the sealing surfaces of the welding jaws 2, 3 can be offset in the horizontal direction, and the welding jaws 2, 3 can be moved differently.
  • the welding jaws 2, 3 not completely close and thereby offset something of the plane of incidence to deflected deflecting knife 28 and horizontally offset and thus stretched, welded film tube 5 only a perforation of the flattened film tube 5 by tips of
  • the two mutually parallel secondary parts 13, 15 are connected to each other via a magnetic shield 19 and thus form a stationary assembly 20th
  • each secondary segment 21 is separated by means of a fastening 22, for. B. in the form of screws ( Figure 4) or in the form of a narrow trace of adhesive ( Figure 5) connected to the bracket 23.
  • a fastening 22 for. B. in the form of screws ( Figure 4) or in the form of a narrow trace of adhesive ( Figure 5) connected to the bracket 23.
  • a gap 24 is provided, which allows the secondary segment 21 at the start of operation to expand more than the first bracket 23th The structural unit 20.
  • the thus distortion-free trained unit 20 leads to a smooth and durable operation of the device 1 and always allows the same welding results.
  • the secondary parts 13, 15 j each carried out in one piece with analog jaw mechanics and connected to each other via a magnetic shield 19 together to form such a stationary assembly 20.
  • the shield 19 is provided as a holder 23. It is made of aluminum.
  • the coats of the secondary parts 13, 15 are made of steel. By fastening the secondary parts 13, 15 on the opposite sides of the holder 23, their warping forces are compensated as a result of heating, so that the holder 23 remains straight.
  • the magnetic shield 19 serves for reliable operation of the two primary parts 12, 14 along the assembly 20.
  • the linear motors 10, 1 1 mounted on each other by a secondary part 15 of a linear motor 1 1 carries the other linear motor 10.
  • This drive 9 like the drive 9 from FIG. 6, is capable of moving the welding jaws 2, 3 in opposite directions without gears, only with connections 16, 17.
  • the secondary parts 13, 15 of the linear motors 10, 1 1 form a compact, movable assembly 20.
  • the primary part 14 of a linear motor 1 1 is mounted stationary.
  • the assembly 20 is guided and moved by separate or attached to the primary part housing rails 26 along this primary part 14.
  • the primary part 12 of the other linear motor 10 is along the assembly 20 by means of at the Assembly 20 or parallel to separately mounted rails 26 out and moved.
  • the assembly 20 is connected via a rigid connection 17 with the one welding jaw 3.
  • the primary part 12 of the other linear motor 10 is connected to the other welding jaw 3 via a rigid connection 16.
  • the upper linear motor 10 must be operated in opposite directions to the lower linear motor 1 1, but not to move the associated welding jaw 2. Only by an exceeding deflection of the primary part 12 relative to the assembly 20, the welding jaw 2 undergoes its movement relative to the welding jaw 3.
  • a (not shown) control and regulation is designed to each cause a suitable baking operation for a packaging operation.
  • the secondary parts 13, 15 are aligned at a right angle to each other and thus form a cross 26.
  • the secondary parts 13, 15 of the assembly 20 are separated from each other only in their crossing region by means of a magnetic shield 19.
  • the cross 26 is raised and lowered together with the jaw stock 27.
  • this primary part 12 is offset relative to the rigidly connected to the secondary part 15 secondary part 13.
  • This pure horizontal movement opens and closes the jaw stock 27 via a (not shown) per se known transmission, for. B. a toggle.
  • a movement of the jaw stick 27 for a continuous, d. H. be transported without stopping further transported film tube 5.

Abstract

The invention relates to a device (1) comprising two welding jaws (2, 3) that can be displaced towards one another in order to weld a formed film web (4) or tubular film (5). In said device, each welding jaw (2, 3) is connected to a separate jaw support (7, 8), preferably by means of a jaw holder (6). A drive (9) comprising two linear motors (10, 11) is connected to the jaw supports (7, 8) by means of a mechanism in order to generate an opposing jaw displacement. To achieve a compact construction for the drive (9), the secondary parts (13, 15) of the linear motors (10, 11) are interconnected by means of a magnetic shielding (19) and thus form a unit (20).

Description

Vorrichtung zum Verschweißen einer Folienbahn Device for welding a film web
Die Erfindung betrifft den Verpackungsmaschinenbau und dort einen Antriebsmechanismus für gegeneinander bewegbare Schweißbacken an vertikalen Schlauchbeutelmaschinen.The invention relates to the packaging machine construction and there a drive mechanism for mutually movable welding jaws on vertical bagging machines.
Vertikale Schlauchbeutelmaschinen und horizontale Beutelmaschinen sind hinlänglich bekannt. Sie dienen zum Abfüllen von Produkt in Beutel. Zum Verschweißen des Beutelmaterials werden gegeneinander bewegbare Schweißbacken eingesetzt, die ein Folienmaterial zwischen sich einklemmen und derart verschweißen.Vertical bagging machines and horizontal bagging machines are well known. They are used for filling product in bags. For welding the bag material, mutually movable welding jaws are used, which clamp a film material between them and weld in such a way.
Aus der DE 195 35 510 Al ist eine Vorrichtung mit zwei gegeneinander bewegbaren Schweißbacken zum Verschweißen einer zu einem Folien- schlauch umgeformten Folienbahn bekannt. Dabei ist j ede Schweißbacke über einen Backenhalter mit einem separaten Backenträger verbunden. Ein Antrieb ist über eine Mechanik mit den Backenträgern verbunden, um eine gegenläufige Backenbewegung bei Einsatz des Antriebs, der zwei Linearmotoren aufweist, auszuführen. Dabei weisen die Linearmo- toren jeweils ein Primärteil und ein Sekundärteil auf. Die bekannte Vorrichtung hat den Nachteil, dass sie relativ sperrig ist, da die Teile der beiden Linearmotoren (elektromagnetischen Linearantriebe) separat ausgeführt sind.DE 195 35 510 A1 discloses a device with two mutually movable welding jaws for welding a film web converted into a film tube. Each jaw is connected via a jaw holder with a separate jaw carrier. A drive is connected via a mechanism with the jaw carriers to perform an opposite jaw movement when using the drive, which has two linear motors. The linear motors each have a primary part and a secondary part. The known device has the disadvantage that it is relatively bulky, since the parts of the two linear motors (electromagnetic linear actuators) are designed separately.
Es liegt die Aufgabe zugrunde, diesen Nachteil zu beseitigen.It is the object of the invention to eliminate this disadvantage.
Gelöst ist die Aufgabe gemäß dem kennzeichnenden Teil des Anspruchs 1. Danach sind die beiden Sekundärteile miteinander über eine magnetische Abschirmung verbunden und bilden derart eine Baueinheit.The object is solved according to the characterizing part of claim 1. Thereafter, the two secondary parts are connected to each other via a magnetic shield and thus form a structural unit.
Die vorgeschlagene Neuerung hat den Vorteil, dass zwei Sekundärteile baulich zusammengefasst werden, wodurch eine kompakte Bauweise erreicht wird. Um eine dadurch auftretende Störung deren Funktion zu verhindern, wird zwischen den Sekundärteilen eine magnetische Abschirmung vorgesehen. Diese kann aus einem elektrisch leitfähigen Material, insbesondere einem Metall, ausgeführt werden. Dabei darf das Material nicht magnetisierbar sein. Zum einen kann eine derartige Verbindung derart gemeint sein, dass die Magnete der separaten Sekundärteile auf gegenüberliegenden Seiten der Abschirmung montiert werden. Zum anderen kann eine separate Halterung für die Sekundärteile vorgesehen sein, und die für beide Sekundärteile wirkende Abschirmung trennt lediglich diese Teile.The proposed innovation has the advantage that two secondary parts are structurally combined, whereby a compact design is achieved. In order to prevent a malfunction occurring as a result of their function, a magnetic shield is provided between the secondary parts. This can be made of an electrically conductive material, in particular a metal. The material must not be magnetizable. On the one hand, such a connection may be such that the magnets of the separate secondaries are mounted on opposite sides of the shield. On the other hand, a separate support for the secondary parts can be provided, and the shield acting for both secondary parts only separates these parts.
Vorteilhafte Ausgestaltungen der vorgeschlagenen Vorrichtung sind in den Ansprüchen 2 bis 9 beschrieben.Advantageous embodiments of the proposed device are described in claims 2 to 9.
Sind die Sekundärteile parallel zueinander ausgerichtet (Anspruch 2), so können durch eine Relativbewegung der Linearmotoren unterschiedliche Bewegungsabläufe in einer Richtung erzeugt werden, um die Schweißba- cken zu bewegen. Sind dagegen gemäß Anspruch 3 die Sekundärteile in einem rechten Winkel zueinander ausgerichtet und bilden sie derart ein Kreuz, so können senkrecht zueinander unterschiedliche bzw. miteinander kombinierte Bewegungen eines Backenstocks erzeugt werden, insbe- sondere um einerseits den Backenstock zu heben und zu senken, und um andererseits dabei die Schweißbacken zu öffnen und zu schließen.If the secondary parts are aligned parallel to one another (claim 2), different movements in one direction can be generated by a relative movement of the linear motors in order to move the welding jaws. If, on the other hand, according to claim 3, the secondary parts are aligned at a right angle to each other and thus form a cross, perpendicular or mutually different movements of a jaw can be generated, in particular special on the one hand to raise and lower the jaw stick, and on the other hand while the welding jaws to open and close.
Ein weiterer Vorteil der kompakten Baueinheit als Antriebselement für die Schweißbacken ist seine Verzugsstabilität, wenn die Sekundärteile auf unterschiedlichen Seiten der als Halterung dienenden Abschirmung (Anspruch 6) befestigt sind. Derart gleichen sich die auf gegenüberliegenden Seiten der Abschirmung befestigten Sekundärteile bezüglich ihrer Neigung infolge eigener Erwärmung die Abschirmung zu krümmen, aus. Die Baueinheit bleibt auch bei hoher Leistung und entsprechender Erwärmung der Sekundärteile ohne nennenswerten Verzug. Als magnetische Abschirmung eignen sich nicht magnetisierbare Leichtmetalle, wie Aluminium und Magnesium (Anspruch 4), wodurch die bewegbare Baueinheit zudem relativ leicht wird. Auch kann die Abschirmung gleich der Halterung sein, wodurch ein Bauteil eingespart wird.Another advantage of the compact unit as a drive element for the welding jaws is its warping stability when the secondary parts are mounted on different sides of serving as a holder shield (claim 6). Thus, the secondary parts mounted on opposite sides of the shield are similar in their inclination due to their own heating to curve the shield from. The assembly remains at high power and appropriate heating of the secondary parts without significant delay. As a magnetic shield are non-magnetizable light metals, such as aluminum and magnesium (claim 4), whereby the movable assembly is also relatively easy. Also, the shield can be equal to the holder, whereby a component is saved.
Um, insbesondere bei einer einseitigen Anbringung der beiden Sekundärteile an einer Halterung, eine Krümmung der Halterung infolge einer Erwärmung der Sekundärteile und dadurch eine Schwergängigkeit der Vorrichtung zu vermeiden, wird vorgeschlagen, als Sekundärteil eine Aneinanderreihung separater Sekundärteilsegmente vorzusehen, wobei j eder Sekundärteilsegment über eine Befestigung mit einer Halterung des Sekundärteils verbunden ist (Anspruch 5). Die in der Praxis vorkommenden Fertigungsungenauigkeiten von wenigen Mikrometern, wobei die Sekundärteilsegmente noch dicht aneinander anliegen, oder genau vorgegebene Spalte zwischen den Sekundärteilsegmenten (Anspruch 7) führen dann dazu, dass bei herkömmlicher Verschraubung oder teilweiserIn order, in particular in a one-sided attachment of the two secondary parts to a holder to avoid curvature of the holder due to heating of the secondary parts and thereby a stiffness of the device, it is proposed to provide a juxtaposition of separate secondary section segments as a secondary part, wherein each ed secondary segment via an attachment is connected to a holder of the secondary part (claim 5). The occurring in practice manufacturing inaccuracies of a few micrometers, the secondary part segments still close to each other, or exactly predetermined gap between the secondary part segments (claim 7) then lead to that in conventional screw or partially
Verklebung der Sekundärteilsegmente eine erwärmungsbedingte, relativ starke Längenausdehnung der Sekundärteilsegmente nicht zu einer Krümmung derAdhesion of the secondary part segments a heating-related, relatively strong longitudinal expansion of the secondary part segments not to a curvature of
Halterung des Sekundärteils führt. Als Befestigung eignen sich Schrau- ben, Nieten und Klebstoffe (Anspruch 8). Die Vorrichtung kann Teil einer vertikalen Schlauchbeutelmaschine oder einer horizontalen Beutelmaschine sein (Anspruch 9).Holding the secondary part leads. Suitable fasteners are screws, rivets and adhesives (claim 8). The device may be part of a vertical bagging machine or a horizontal bagging machine (claim 9).
Im folgenden wird die Erfindung an Hand Ausführungsbeispiele darstellender Figuren näher beschrieben. Es zeigt:In the following the invention will be described with reference to embodiments illustrative figures. It shows:
Figur 1 in einer Ansicht von oben eine Vorrichtung zum Verschweißen eines Folienschlauches einer vertikalen Schlauchbeutelmaschine mit zwei Linearmotoren zum separaten Antreiben von jeweils einer Schweißbacke mit geöffneten Schweißbacken, wobei die Sekundärteile der Linearmotoren in einer Baueinheit enthalten sind;Figure 1 is a top view of an apparatus for welding a film tube of a vertical bagging machine with two linear motors for separately driving each of a welding jaw with open welding jaws, wherein the secondary parts of the linear motors are contained in a structural unit;
Figur 2 in einer Seitenansicht die Baueinheit der Figur 1 , wobei jeweils ein an einer Verbindung zu einer Schweißbacke befestigtes Primärteil relativ zu einem Sekundärteil bewegbar ist, und zwischen den Sekundärteilen einer magnetische Abschirmung vorgesehen ist;Figure 2 is a side view of the assembly of Figure 1, wherein each one attached to a connection to a welding jaw primary part is movable relative to a secondary part, and is provided between the secondary parts of a magnetic shield;
Figur 3 in einer Ansicht von oben die Vorrichtung der Figur 1 , jedoch mit geschlossenen Schweißbacken;Figure 3 is a top view of the device of Figure 1, but with closed welding jaws;
Figur 4 in einer Seitenansicht eine Baueinheit mit zwei Sekundärteilen, wobei die Sekundärteile j eweils aus einer Aneinanderreihung separater Sekundärteilsegmente zusammengesetzt sind;Figure 4 is a side view of a unit with two secondary parts, wherein the secondary parts are each composed of a juxtaposition of separate secondary subsegments;
Figur 5 in einer Ansicht von oben eine Vorrichtung analog Figur 1 , jedoch mit einem Sekundärteil analog Figur 4;Figure 5 is a top view of a device analogous to Figure 1, but with a secondary part analogous to Figure 4;
Figur 6 in einer Seitenansicht in einem Ausführungsbeispiel einenFigure 6 in a side view in an embodiment of a
Antrieb für einen Backenmechanismus gemäß den Figuren 1 oder 5, der zwei auf gegenüberliegenden Seiten eines ortsfesten, doppelten Sekundärteils bewegbare Primärteile dazu nutzt, j eweils eine (nicht dargestellte) Schweißbacke mittels einer Primärteilbewegung zu bewegen; Figur 7 in einer Seitenansicht in einem weiteren Ausführungsbeispiel einen Antrieb, der zwei aufeinander montierte Linearmotoren und eine zwei Sekundärteile enthaltende Baueinheit aufweist, um einen Backenmechanismus zu bewegen;Drive for a jaw mechanism according to the figures 1 or 5, which uses two movable on two opposite sides of a stationary, double secondary primary parts, in each case to move a (not shown) welding jaw by means of a primary part movement; Figure 7 is a side view in a further embodiment of a drive having two superimposed linear motors and a two secondary parts containing assembly to move a jaw mechanism;
Figur 8 in einer Seitenansicht eine Vorrichtung zum Bewegen einesFigure 8 is a side view of a device for moving a
Backenstocks in vertikaler Richtung sowie zum Öffnen und Schließen der Schweißbacken in horizontaler Richtung, wobei der Antrieb zwei Linearmotore aufweist, deren Sekundärteile in einem rechten Winkel zueinander ausgerichtet und über eine magnetische Abschirmung innerhalb einerJaw sticks in the vertical direction and for opening and closing the welding jaws in the horizontal direction, wherein the drive comprises two linear motors whose secondary parts aligned at a right angle to each other and a magnetic shield within a
Baueinheit miteinander verbunden sind, sowieBuilding unit are connected together, as well
Figur 9 in einer um 90 Grad zur Ansicht der Figur 8 versetzten9 in a 90 degrees offset to the view of Figure 8
Seitenansicht den Antrieb der Figur 8.Side view of the drive of Figure 8.
Bei einer Vorrichtung 1 mit zwei gegeneinander bewegbaren Schweißba- cken 2, 3 zum Verschweißen einer zu einem Folienschlauch 5 umgeformten Folienbahn 4 ist j ede Schweißbacke 2, 3 über einen Backenhalter 6 mit einem separaten Backenträger 7, 8 verbunden (Figuren 1 , 2 und 3). Ein Antrieb 9 ist über eine Mechanik mit den Backenträgern 7, 8 verbunden, um eine gegenläufige Backenbewegung bei Einsatz von Linearmoto- ren 10, 1 1 auszuführen. Als Antrieb 9 sind zwei nebeneinander und parallel zueinander ausgerichtete Linearmotoren 10, 1 1 mit jeweils einem Primärteil 12, 14 und jeweils einem Sekundärteil 13, 15 vorgesehen. Jeweils ein bewegliches Teil des Linearmotors 10, 1 1 ist über Gelenke 27 und über eine Verbindung 16, 17 mit einem Backenträger 7, 8 verbunden. Die Verbindungen 16, 17 werden mittels Führungen 25 in horizontaler Richtung geführt. Die Schweißbacken 2, 3 sind Teil einer Quersiegelstation einer vertikalen Schlauchbeutelmaschine. Ein auslenkbares Trennmesser 28 in einer Schweißbacke 2 dient einer Abtrennung eines fertig gestellten Schlauchbeutels vom Folienschlauch 5. Von den Linearmotoren 10, 1 1 ist j eweils das Sekundärteil 13 , 15 ortsfest und das Primärteil 12, 14 als bewegliches Teil ausgeführt. Mit j edem Gehäuse eines Sekundärteils 13, 15 sind zwei Führungen 25 verbunden, entlang denen (nicht dargestellte) Schlitten der beweglichen Primärteile 12, 14 gleiten. Die an den Verbindungen 16, 17 befestigten Primärteile 12, 14 haben eine gemeinsame (nicht dargestellte) Kühl- und Elektrover- sorgung.In a device 1 with two mutually movable weld jacks 2, 3 for welding a film web 4 converted into a film tube 5, each welding jaw 2, 3 is connected via a jaw holder 6 to a separate jaw carrier 7, 8 (FIGS. 1, 2 and 3) ). A drive 9 is connected via a mechanism to the jaw carriers 7, 8 in order to carry out an opposite jaw movement when linear motors 10, 11 are used. As drive 9 two juxtaposed and parallel to each other linear motors 10, 1 1, each with a primary part 12, 14 and a respective secondary part 13, 15 are provided. In each case a movable part of the linear motor 10, 1 1 is connected via joints 27 and via a connection 16, 17 with a jaw carrier 7, 8. The compounds 16, 17 are guided by guides 25 in the horizontal direction. The welding jaws 2, 3 are part of a transverse sealing station of a vertical bagging machine. A deflectable separating knife 28 in a welding jaw 2 serves to separate a finished tubular bag from the film tube 5. Of the linear motors 10, 1 1 is in each case the secondary part 13, 15 stationary and the primary part 12, 14 designed as a movable part. With j edem housing a secondary part 13, 15, two guides 25 are connected, along which slides (not shown) of the movable primary parts 12, 14. The attached to the connections 16, 17 primary parts 12, 14 have a common (not shown) cooling and electrical supply.
Die Linearmotoren 10, 1 1 können die Schweißbacken 2, 3 durch Verfahren ihrer Primärteile 12, 14 separat und beliebig versetzen. Sie können in Abhängigkeit eines beliebigen Durchmessers eines Folienschlauches 5 bezüglich eines maximalen Abstandes der Schweißbacken 2, 3 voneinander betrieben werden, um stets eine minimale, für einen Schweißvorgang ausreichende Backenbewegung auszuführen. Zudem kann die Auftreffebene der Siegelflächen der Schweißbacken 2, 3 in horizontaler Richtung versetzt werden, und die Schweißbacken 2, 3 können unterschiedlich bewegt werden. So ist es möglich, fallweise die Schweißbacken 2, 3 nicht ganz zu schließen und dabei etwas von der Auftreffebene weg zu versetzen, um bei ausgelenktem Trennmesser 28 und horizontal versetztem und dadurch gespannten, verschweißten Folienschlauch 5 nur eine Perforation des abgeflachten Folienschlauches 5 durch Spitzen desThe linear motors 10, 1 1 can offset the welding jaws 2, 3 by moving their primary parts 12, 14 separately and as desired. They can be operated in dependence of any diameter of a film tube 5 with respect to a maximum distance of the welding jaws 2, 3 from each other to always perform a minimum, sufficient for a welding jaw movement. In addition, the plane of incidence of the sealing surfaces of the welding jaws 2, 3 can be offset in the horizontal direction, and the welding jaws 2, 3 can be moved differently. Thus, it is possible, in some cases the welding jaws 2, 3 not completely close and thereby offset something of the plane of incidence to deflected deflecting knife 28 and horizontally offset and thus stretched, welded film tube 5 only a perforation of the flattened film tube 5 by tips of
Trennmessers 28 bei unveränderter Trennmesserauslenkung zu erreichen.Disconnecting blade 28 to reach at unchanged Trennmesserauslenkung.
Die beiden parallel zueinander ausgerichteten Sekundärteile 13, 15 sind miteinander über eine magnetische Abschirmung 19 verbunden und bilden derart eine ortsfeste Baueinheit 20.The two mutually parallel secondary parts 13, 15 are connected to each other via a magnetic shield 19 and thus form a stationary assembly 20th
Bei den Ausführungsbeispielen der Figuren 4 und 5 sind die Sekundärteile 13, 15 der Baueinheit 20 zum Vermeiden eines sich Verziehens der als Halterung 23 dienenden Abschirmung 19 jeweils aus einer Aneinanderreihung von Sekundärteilsegmenten 21 aufgebaut. Dabei ist j edes Sekundärteilsegment 21 separat mittels einer Befestigung 22, z. B. in Form von Schrauben (Figur 4) oder in Form einer schmalen Klebstoffspur (Figur 5) mit der Halterung 23 verbunden. Zum weiteren Vermeiden eines sich Verziehens der Baueinheit 20 infolge deren Erwärmung bzw. der Erwärmung ihrer Magnete bei Betrieb der Primärteile 12, 14 ist j eweils zwischen zwei Sekundärteilsegmenten 21 ein Spalt 24 vorgesehen, der es erlaubt, dass sich die Sekundärteilsegmente 21 bei Betriebsbeginn zunächst stärker ausdehnen als die Halterung 23 der Baueinheit 20. Die derart verzugsfreie ausgebildete Baueinheit 20 führt zu einem leichtgängigen und langlebigen Betrieb der Vorrichtung 1 und ermöglicht stets gleiche Schweißergebnisse.In the embodiments of Figures 4 and 5, the secondary parts 13, 15 of the assembly 20 to avoid a distortion of serving as a holder 23 shield 19 each constructed of a juxtaposition of secondary segment segments 21. In this case, each secondary segment 21 is separated by means of a fastening 22, for. B. in the form of screws (Figure 4) or in the form of a narrow trace of adhesive (Figure 5) connected to the bracket 23. To further avoid one yourself Warping of the assembly 20 as a result of their heating or the heating of their magnets during operation of the primary parts 12, 14 is in each case between two secondary segment 21, a gap 24 is provided, which allows the secondary segment 21 at the start of operation to expand more than the first bracket 23th The structural unit 20. The thus distortion-free trained unit 20 leads to a smooth and durable operation of the device 1 and always allows the same welding results.
Beim Ausführungsbeispiel der Figur 6 sind bei analoger Backenmechanik die Sekundärteile 13, 15 j eweils einstückig ausgeführt und miteinander über eine magnetische Abschirmung 19 miteinander verbunden, um derart eine ortsfeste Baueinheit 20 zu bilden. Die Abschirmung 19 ist als Halterung 23 vorgesehen. Sie besteht aus Aluminium. Die Mäntel der Sekundärteile 13 , 15 sind aus Stahl. Durch die Befestigung der Sekun- därteile 13, 15 auf den gegenüberliegenden Seiten der Halterung 23 werden deren Verzugskräfte infolge einer Erwärmung ausgeglichen, so dass die Halterung 23 gerade bleibt. Die magnetische Abschirmung 19 dient einem zuverlässigen Betrieb der beiden Primärteile 12, 14 entlang der Baueinheit 20.In the embodiment of Figure 6, the secondary parts 13, 15 j each carried out in one piece with analog jaw mechanics and connected to each other via a magnetic shield 19 together to form such a stationary assembly 20. The shield 19 is provided as a holder 23. It is made of aluminum. The coats of the secondary parts 13, 15 are made of steel. By fastening the secondary parts 13, 15 on the opposite sides of the holder 23, their warping forces are compensated as a result of heating, so that the holder 23 remains straight. The magnetic shield 19 serves for reliable operation of the two primary parts 12, 14 along the assembly 20.
Beim Ausführungsbeispiel der Figur 7 sind die Linearmotoren 10, 1 1 aufeinander montiert, indem ein Sekundärteil 15 des einen Linearmotors 1 1 den anderen Linearmotor 10 trägt. Dieser antrieb 9 ist wie der Antrieb 9 aus Figur 6 in der Lage, ohne Getriebe, nur mit Verbindungen 16, 17 die Schweißbacken 2, 3 gegenläufig zu bewegen. In Sachen Sekundär- teilsegmente 21 , Baueinheit 20, Abschirmung 19 und Materialien gilt das gleiche wie zuvor beschrieben. Die Sekundärteile 13 , 15 der Linearmotoren 10, 1 1 bilden eine kompakte, bewegbare Baueinheit 20. Das Primärteil 14 des einen Linearmotors 1 1 ist ortsfest montiert. Die Baueinheit 20 wird mittels separater oder am Primärteilgehäuse befestigter Schienen 26 entlang dieses Primärteils 14 geführt und bewegt. Das Primärteil 12 des anderen Linearmotors 10 wird entlang der Baueinheit 20 mittels an der Baueinheit 20 oder parallel dazu separat montierter Schienen 26 geführt und bewegt. Die Baueinheit 20 ist über eine starre Verbindung 17 mit der einen Schweißbacke 3 verbunden. Das Primärteil 12 des anderen Linearmotors 10 ist über eine starre Verbindung 16 mit der anderen Schweiß- backe 3 verbunden. Dadurch, dass durch eine Auslenkung des unteren Linearmotors 1 1 beide Schweißbacken 2, 3 gleichartig versetzt werden, muss der obere Linearmotor 10 gegenläufig zum unteren Linearmotor 1 1 betrieben werden, allein um die ihm zugeordnete Schweißbacke 2 nicht zu bewegen. Erst durch eine darüber hinausgehende Auslenkung des Primärteils 12 relativ zur Baueinheit 20 erfährt die Schweißbacke 2 ihre Bewegung relativ zur Schweißbacke 3. Eine (nicht dargestellte) Steuerung und Regelung ist dazu ausgelegt, j eweils eine für einen Verpackungsbetrieb geeignete optimierte Backenbewegung zu veranlassen.In the embodiment of Figure 7, the linear motors 10, 1 1 mounted on each other by a secondary part 15 of a linear motor 1 1 carries the other linear motor 10. This drive 9, like the drive 9 from FIG. 6, is capable of moving the welding jaws 2, 3 in opposite directions without gears, only with connections 16, 17. In terms of secondary part segments 21, unit 20, shield 19 and materials, the same applies as previously described. The secondary parts 13, 15 of the linear motors 10, 1 1 form a compact, movable assembly 20. The primary part 14 of a linear motor 1 1 is mounted stationary. The assembly 20 is guided and moved by separate or attached to the primary part housing rails 26 along this primary part 14. The primary part 12 of the other linear motor 10 is along the assembly 20 by means of at the Assembly 20 or parallel to separately mounted rails 26 out and moved. The assembly 20 is connected via a rigid connection 17 with the one welding jaw 3. The primary part 12 of the other linear motor 10 is connected to the other welding jaw 3 via a rigid connection 16. Characterized in that by a deflection of the lower linear motor 1 1 both welding jaws 2, 3 are offset identically, the upper linear motor 10 must be operated in opposite directions to the lower linear motor 1 1, but not to move the associated welding jaw 2. Only by an exceeding deflection of the primary part 12 relative to the assembly 20, the welding jaw 2 undergoes its movement relative to the welding jaw 3. A (not shown) control and regulation is designed to each cause a suitable baking operation for a packaging operation.
Beim Ausführungsbeispiel der Figuren 8 und 9 sind die Sekundärteile 13, 15 in einem rechten Winkel zueinander ausgerichtet und bilden derart ein Kreuz 26. Die Sekundärteile 13, 15 der Baueinheit 20 sind lediglich in ihrem Kreuzungsbereich mittels einer magnetischen Abschirmung 19 voneinander separiert. Durch Betreiben des ortsfesten Primärteils 14 gegenüber dem Sekundärteil 15 des einen Linearmotors 1 1 wird das Kreuz 26 mitsamt dem Backenstock 27 gehoben und gesenkt. DurchIn the embodiment of Figures 8 and 9, the secondary parts 13, 15 are aligned at a right angle to each other and thus form a cross 26. The secondary parts 13, 15 of the assembly 20 are separated from each other only in their crossing region by means of a magnetic shield 19. By operating the stationary primary part 14 relative to the secondary part 15 of a linear motor 1 1, the cross 26 is raised and lowered together with the jaw stock 27. By
Betreiben des Primärteils 12 des anderen, horizontal bewegbaren Linearmotors 10 wird dieses Primärteil 12 relativ zum starr mit dem Sekundärteil 15 verbundenen Sekundärteil 13 versetzt. Diese reine Horizontalbewegung öffnet und schließt den Backenstock 27 über ein (nicht darge- stelltes) an sich bekanntes Getriebe, z. B. einen Kniehebel. Derart kann eine Bewegung des Backenstocks 27 für einen kontinuierlich, d. h. ohne Stillstand weitertransportierten Folienschlauch 5 ausgelegt werden. Operating the primary part 12 of the other, horizontally movable linear motor 10, this primary part 12 is offset relative to the rigidly connected to the secondary part 15 secondary part 13. This pure horizontal movement opens and closes the jaw stock 27 via a (not shown) per se known transmission, for. B. a toggle. Such a movement of the jaw stick 27 for a continuous, d. H. be transported without stopping further transported film tube 5.

Claims

Patentansprüche claims
1. Vorrichtung ( 1 ) mit zwei gegeneinander bewegbaren Schweißbacken (2, 3) zum Verschweißen einer umgeformten Folienbahn (4) bzw. eines Folienschlauches (5), wobei j ede Schweißbacke (2, 3), vorzugsweise über einen Backenhalter (6), mit einem separaten Backenträger (7, 8) verbunden ist, und ein Antrieb (9) über eine Mechanik mit den Backenträgern (7, 8) verbunden ist, um eine gegenläufige Backenbewegung bei Einsatz des Antriebs (9), der zwei Linearmotoren (10, 1 1 ) aufweist, auszuführen, wobei die Linearmotoren ( 10, 1 1 ) jeweils ein Primärteil ( 12, 14) und ein Sekundärteil ( 13 , 15) aufweisen, dadurch gekennzeichnet, dass die beiden Sekundärteile ( 13, 1 5) miteinander über eine magnetische Abschirmung ( 19) verbunden sind und derart eine Baueinheit (20) bilden.1. Device (1) with two mutually movable welding jaws (2, 3) for welding a deformed film web (4) or a film tube (5), wherein j ede welding jaw (2, 3), preferably via a jaw holder (6), with a separate jaw carrier (7, 8) is connected, and a drive (9) via a mechanism with the jaw carriers (7, 8) is connected to an opposite jaw movement when using the drive (9), the two linear motors (10, 1 1), the linear motors (10, 11) each having a primary part (12, 14) and a secondary part (13, 15), characterized in that the two secondary parts (13, 15) are connected to one another via a magnetic shield (19) are connected and so form a structural unit (20).
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Sekundärteile ( 13, 15) parallel zueinander ausgerichtet sind.2. Device according to claim 1, characterized in that the secondary parts (13, 15) are aligned parallel to each other.
3. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Sekundärteile ( 13, 15) in einem rechten Winkel zueinander ausge- richtet sind und derart ein Kreuz (26) bilden.3. A device according to claim 1, characterized in that the secondary parts (13, 15) are aligned at a right angle to each other and thus form a cross (26).
4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass als magnetische Abschirmung (19) ein nicht magne- tisierbares Leichtmetall, insbesondere Aluminium oder Magnesium dient.4. Device according to one of claims 1 to 3, characterized in that as a magnetic shield (19) a non-magnetizable light metal, in particular aluminum or magnesium is used.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass als Sekundärteil (13 , 15) eine Aneinanderreihung separater Sekundärteilsegmente (21 ) vorgesehen ist, wobei j eder Sekundärteilsegment (21) über eine Befestigung (22) mit einer Halterung (23) des Sekundärteils (13 , 15) verbunden ist.5. Device according to one of claims 1 to 4, characterized in that as a secondary part (13, 15) a juxtaposition of separate secondary part segments (21) is provided, wherein j eder Secondary segment (21) via a fastening (22) with a holder (23) of the secondary part (13, 15) is connected.
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass als Halterung (23) die magnetische Abschirmung (19) vorgesehen ist.6. Apparatus according to claim 5, characterized in that as a holder (23), the magnetic shield (19) is provided.
7. Vorrichtung nach Anspruch 5 oder Anspruch 6, dadurch gekennzeichnet, dass die Sekundärteilsegmente (21) dicht aneinander anliegen oder zwischen jeweils zwei Sekundärteilsegmenten (21 ) ein Spalt (24) vorgesehen ist.7. Apparatus according to claim 5 or claim 6, characterized in that the secondary part segments (21) bear tightly against each other or between each two secondary part segments (21), a gap (24) is provided.
8. Vorrichtung nach Anspruch 5 , Anspruch 6 oder Anspruch 7, dadurch gekennzeichnet, dass als Befestigung (22) ein Klebstoff, eine Verschraubung oder eine Vernietung vorgesehen ist.8. Apparatus according to claim 5, claim 6 or claim 7, characterized in that as an attachment (22) an adhesive, a screw or riveting is provided.
9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Vorrichtung ( 1 ) Teil einer vertikalen Schlauchbeutelmaschine oder einer horizontalen Beutelmaschine ist. 9. Device according to one of claims 1 to 8, characterized in that the device (1) is part of a vertical tubular bag machine or a horizontal bag machine.
EP07723679A 2006-05-12 2007-03-28 Device for welding a film web Withdrawn EP2024167A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610022192 DE102006022192B4 (en) 2006-05-12 2006-05-12 Device for welding a film web
PCT/EP2007/002733 WO2007131573A2 (en) 2006-05-12 2007-03-28 Device for welding a film web

Publications (1)

Publication Number Publication Date
EP2024167A2 true EP2024167A2 (en) 2009-02-18

Family

ID=38169697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07723679A Withdrawn EP2024167A2 (en) 2006-05-12 2007-03-28 Device for welding a film web

Country Status (4)

Country Link
US (1) US20090301661A1 (en)
EP (1) EP2024167A2 (en)
DE (1) DE102006022192B4 (en)
WO (1) WO2007131573A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009035132A1 (en) * 2009-07-29 2011-02-03 Edmund Mundorf Material web processing device, has drive including set of eccentrics exhibiting phase shift with respect to another set of eccentrics, where phase shift between eccentrics amounts to specific degrees
DE102010060818B4 (en) * 2009-12-17 2018-05-17 Inno-Tech Verpackungsmaschinen Gmbh Packaging machine with two transverse sealing jaws for sealing a packaging
ITVR20110098A1 (en) * 2011-05-11 2012-11-12 P F M Spa VERTICAL PACKAGING MACHINE FOR FOOD PRODUCTS
US20140047802A1 (en) * 2012-08-17 2014-02-20 Khs Gmbh Packaging machine
CN106497775B (en) * 2016-10-14 2019-03-15 上海爱易生物医学科技股份有限公司 A kind of fluorescence quantitative PCR instrument with automatic sealing function

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH306808A (en) * 1948-11-19 1955-04-30 Rado Leopold Machine for the production of containers, filled with liquid or pasty substance, formed from a non-metallic pliable material, of thermoplastic nature.
JPS5037169U (en) * 1973-07-31 1975-04-18
ES2004422A6 (en) * 1987-06-12 1989-01-01 Sallent Soler Jose Improvements in machines for packing voluminous objects with thermoplastic film (Machine-translation by Google Translate, not legally binding)
EP0765812B1 (en) * 1991-10-03 2000-08-16 ISHIDA CO., Ltd. Transverse sealer for packaging machine
US5540035A (en) * 1994-12-07 1996-07-30 Kliklok Corporation Continuous vertical form-fill-seal packaging machine with synchronized product clamp
DE19535510B4 (en) * 1995-09-25 2006-06-08 Rovema - Verpackungsmaschinen Gmbh Closing device for a packaging process
DE19627892A1 (en) * 1996-07-11 1998-01-15 Rovema Gmbh Tubular bag machine
DE19630420B4 (en) * 1996-07-27 2007-06-14 Rovema - Verpackungsmaschinen Gmbh Method for operating a tubular bag machine
CA2254063C (en) * 1997-11-20 2001-06-05 Orihiro Engineering Co., Ltd. Forming, filling and sealing machine for standing pouch
DE19813215A1 (en) * 1998-03-26 1999-09-30 Rovema Gmbh Tubular bag machine
JP4229221B2 (en) * 1998-05-18 2009-02-25 株式会社イシダ Packaging equipment
DE29822122U1 (en) * 1998-12-11 2000-04-20 Vision Verpackungstechnik Gmbh Device for processing continuously moving material
US6441515B1 (en) * 1999-09-10 2002-08-27 Sankyo Seiki Mfg. Co., Ltd. Linear motor
US6836692B2 (en) * 2001-08-09 2004-12-28 Johnson & Johnson Vision Care, Inc. System and method for intelligent lens transfer
US20030093791A1 (en) * 2001-11-09 2003-05-15 Julia Luc E. System and method for interactive television
JP4253164B2 (en) * 2002-05-17 2009-04-08 株式会社イシダ Horizontal seal mechanism of bag making and packaging machine and bag making and packaging machine
DE10223821A1 (en) * 2002-05-28 2003-12-11 Matuschek Mestechnik Gmbh welding gun
DE10331362A1 (en) * 2003-07-11 2005-01-27 Rovema Verpackungsmaschinen Gmbh Device for welding a film tube
DE10346416A1 (en) * 2003-10-07 2005-05-04 Rovema Gmbh Device for transferring folded cartons
JP4474151B2 (en) * 2003-11-28 2010-06-02 キヤノン株式会社 Motor, exposure apparatus using the same, and device manufacturing method
KR101066357B1 (en) * 2004-05-14 2011-09-20 가부시키가이샤 야스카와덴키 Moving magnet type linear slider
DE102004026455A1 (en) * 2004-05-29 2005-12-22 Rovema Verpackungsmaschinen Gmbh Handling device for inserting packages, has bearing rail together with one of carriages building electromagnetic linear motor, where rail forms primary part, and carriages each are constructed as secondary part
US7654540B2 (en) * 2004-06-18 2010-02-02 Bose Corporation Electromechanical transducing
DE102004039190A1 (en) * 2004-08-12 2006-02-23 Siemens Ag Machine, in particular production machine, machine tool and / or robot
DE102004047207A1 (en) * 2004-09-29 2006-03-30 Rovema Verpackungsmaschinen Gmbh Method and device for moving a welding jaw
DE102004049375A1 (en) * 2004-10-09 2006-04-13 Rovema Verpackungsmaschinen Gmbh Method and device for positioning a welding jaw
JP4731903B2 (en) * 2004-12-24 2011-07-27 パナソニック株式会社 Mounting head for component mounting, and component mounting apparatus including the mounting head
EP1732197B1 (en) * 2005-06-09 2015-06-10 Alois Jenny Linear motor comprising an integrated guide
JP4917802B2 (en) * 2005-12-22 2012-04-18 日本テトラパック株式会社 Packaging container manufacturing apparatus and packaging container manufacturing method
DE102006022193B4 (en) * 2006-05-12 2009-08-27 Rovema - Verpackungsmaschinen Gmbh Vertical tubular bag machine with two linear motors
TWI347062B (en) * 2007-05-15 2011-08-11 Ind Tech Res Inst Voice coil motor and pre-compression generation device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007131573A2 *

Also Published As

Publication number Publication date
DE102006022192B4 (en) 2009-08-27
DE102006022192A1 (en) 2007-11-15
US20090301661A1 (en) 2009-12-10
WO2007131573A2 (en) 2007-11-22
WO2007131573A3 (en) 2009-04-16

Similar Documents

Publication Publication Date Title
EP2024167A2 (en) Device for welding a film web
DE102013114184A1 (en) Double spot welder
DE102011006506B4 (en) Ultrasonic heat sealing with seal pressure control
EP1642700B1 (en) Method and apparatus for moving a sealing jaw
DE102006022193B4 (en) Vertical tubular bag machine with two linear motors
EP2447043B1 (en) Method for the energy-efficient sealing of tubular web
DE102016004180A1 (en) Apparatus for ultrasonic welding
EP0567769B1 (en) Device for folding in the bottom-flaps of a packaging carton
DE102006023003A1 (en) Device has two welding jaws displaced towards each other to weld formed film web or tubular film, where each welding jaw is connected to separate jaw support, preferably by jaw holder as well as, one drive has two linear motors
DE202006019896U1 (en) Device for welding plastic hose, comprises magnetic deflecting element inserted between secondary parts
EP1495976A1 (en) Apparatus for welding a blown tubular film
DE102006025849A1 (en) Welding device for foil path formed at tubular foil tube, has coupling unit moving transverse to moving direction of movable parts to lift, lower, open and close sealing jaws by relative movement of movable part and fixed part
DE102004049376A1 (en) Method for creating of welding force or pressure for welding jaw of packing machine entails predetermining time-dependent sealing force by control device of drive power control unit during sealing period
EP1640140A2 (en) Method and device for moving a sealing jaw
DE10360313B4 (en) welder
EP1495975B1 (en) Apparatus for sealing bag-type packages
DE102004056690B4 (en) Device for welding a film tube
DE10342354A1 (en) Vertical bag forming, filling and sealing machine has two units each with two linear actuators with the driving component of one linear actuator is rigidly connected to movable component of other linear actuator
DE202006019897U1 (en) Bag forming machine comprises a drive with a cross with the two crosspieces running across each other
DE2022315C3 (en) Electric resistance welder
DE202006019895U1 (en) Film bag production machine, for packaging, has a linear motor for the lateral welding station with separate segments at the secondary section in a spaced row at the holder
DE2344815A1 (en) METHOD AND DEVICE FOR PRODUCING BOTTOM SECTIONS IN BAGS
WO2007131574A1 (en) Bagging machine
EP1600382B1 (en) Apparatus for welding a preformed film
DE102006022946A1 (en) Vertical bagging machine comprises linear motor with primary and secondary part, where secondary part is held in arbor, such that arbors are provided as collective components, and primary part is held by mounting plate

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20081208

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

R17D Deferred search report published (corrected)

Effective date: 20090416

DAX Request for extension of the european patent (deleted)
19U Interruption of proceedings before grant

Effective date: 20100201

19W Proceedings resumed before grant after interruption of proceedings

Effective date: 20101102

17Q First examination report despatched

Effective date: 20101201

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROVEMA GMBH

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140423