DE4141705A1 - Precision stretching device making true=to=scale copy - ensures uniform tension of film over all parts of surface of package vulnerable to excessive pressure - Google Patents

Precision stretching device making true=to=scale copy - ensures uniform tension of film over all parts of surface of package vulnerable to excessive pressure

Info

Publication number
DE4141705A1
DE4141705A1 DE19914141705 DE4141705A DE4141705A1 DE 4141705 A1 DE4141705 A1 DE 4141705A1 DE 19914141705 DE19914141705 DE 19914141705 DE 4141705 A DE4141705 A DE 4141705A DE 4141705 A1 DE4141705 A1 DE 4141705A1
Authority
DE
Germany
Prior art keywords
film
package
parts
uniform tension
film over
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Withdrawn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
DE19914141705
Other languages
German (de)
Inventor
Herbert Evers
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19914141705 priority Critical patent/DE4141705A1/en
Publication of DE4141705A1 publication Critical patent/DE4141705A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/04—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
    • B65B11/045—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated by rotating platforms supporting the articles

Abstract

The rectangular package (A) to be wrapped in a sheet of film is probed synchronously throughout the process of stretching of the wrapper. The true-to-scale copying device (B) is driven by the turntable drive so that the requirement of film is recognised in good time for electrical, electronic or similar control of torque of the film-winding motor, to maintain uniform tension over any edges or projections of the package. USE/ADVANTAGE - With easily deformed packages, optimal winding is achieved at constant film tension with no compression of the package at its edges.

Description

Diese Sensorstretchsysteme arbeiten zu ungenau und kommen ihrer Anforderung nicht nach.These sensor stretch systems work too imprecisely and come up to their requirement not after.

Wenn ein rechteckiges Packgut gestretcht wird, treten durch die Umdrehungen unterschiedliche Meteranforderungen an die zugeführte Folie auf. Dies wird bei den meisten Anlagen mit einer Tänzerrolle ausgeführt.If a rectangular packaged good is stretched, step through the Revolutions different meter requirements for the supplied Slide on. This will be the case with most dancers executed.

Durch die Umdrehungen des Packgutes entsteht ein Zug auf die Folie. Dieser Folienzug wirkt auf die Tänzerrolle, die durch den Zug axial gegen einen Schalter oder Potentiometer gedrückt wird der den Folienmotor um diesen angeforderten Wert drehen läßt.The turns of the packaged goods create a pull on the film. This film pull acts on the dancer roll by the pull axially is pressed against a switch or potentiometer Can rotate the film motor by this requested value.

An den Ecken des Packstücks entsteht durch den längeren Radius zum Mittelpunkt, ein stärkerer Zug auf die Folie, (die Abrollgeschwindigkeit ist jetzt am größten), wodurch die Steuerung mehr Folie liefert. Diese Mehrfolie wird aber nicht mehr benötigt. Während die mechanische Anforderung auf das Poti den Motor steuert und zur Wirkung kommt, hat sich das Packgut weiter gedreht und braucht diese geforderte Folie nicht mehr. Im Gegenteil, jetzt wird auf der Längsseite des Packgutes weniger Folie benötigt.The longer radius at the corners of the package creates Center, a stronger pull on the slide, (the Unwind speed is now the greatest), which makes control delivers more foil. However, this multi-layer is no longer required. While the mechanical demand on the potentiometer controls the motor and comes into effect, the packaged goods have turned further and no longer needs this required film. On the contrary, now less film is required on the long side of the packaged goods.

Ein elastisches Packgut, das leicht verformbar ist, ist nicht zu stretchen, weil der zu hohe Zug über den Ecken das Paket eindrückt.An elastic packaged product that is easily deformable is not too stretch because the excess tension pushes the package in over the corners.

Beschreibung einer Präzisions-StretcheinrichtungDescription of a precision stretch device

Der vorgeschlagenen Konstruktion liegt die Idee zugrunde, das zu bearbeitende Packstück während dem Stretchvorgang in seiner Form, synchronlaufend abzutasten, um so ständig eine maßstabgerechte Kopie des Packstückes und deren Abwicklung, somit auch die Folienanforderung frühzeitig zu erkennen, damit die Ansteuerung des Folienmotors im richtigen Moment seine Sollwertvorgabe erhält. Die Kopiervorrichtung wird vom Antrieb des Drehtellers angetrieben. Die Aufnahme, für die abzutastende Packstückform, wird so ausgeführt, daß durch Umsetzen ein Vorlauf gewählt werden kann. So kann die Form voreilend, für die Ansteuerung des Potentiometers eingestellt werden.The proposed construction is based on the idea of that processing package during its stretching process Shape, synchronous scanning, so that a constant to scale Copy of the package and its processing, including the film request Detect early so that the control of the film motor receives its setpoint specification at the right moment. The copying device is driven by the drive of the turntable. The recording, for the package shape to be scanned, is so carried out that a lead can be selected by implementing. So the shape can lead to the control of the potentiometer can be set.

Mit dem getasteten Signal kann sofort der Folienmotor angesteuert werden. Somit wird eine optimale Wicklung durch gleichbleibenden Folienzug erreicht.The foil motor can be activated immediately with the keyed signal will. This ensures optimal winding due to constant film tension reached.

Für das Bearbeiten von unterschiedlichen Packstücken wird das Abtastmodel getauscht.The scanning model is used to process different packages exchanged.

Claims (1)

Um ein ungleichmäßiges oder ähnliches, vieleckiges auch elastisches zu umwickelndes Gut wird durch Abtastung eines maßstabgerechtes synchron laufenden Modells mit Hilfe einer elektrischen oder elektronischen oder ähnlichen Steuerung, die auch vorlaufend eingestellt werden kann, eine Folie mit gleichbleibendem Zug auch über eventuell vorhandene Ecken oder Vorstände so gewickelt, daß an allen Stellen des umwickelten Gutes die gleiche Folienspannung vorliegt.To an uneven or similar, polygonal also elastic Good to be wrapped is made by scanning a scale synchronous running model with the help of an electric or electronic or similar controls that are also leading can be adjusted, a film with constant tension also over any existing corners or boards so that all parts of the wrapped goods have the same film tension is present.
DE19914141705 1991-12-18 1991-12-18 Precision stretching device making true=to=scale copy - ensures uniform tension of film over all parts of surface of package vulnerable to excessive pressure Withdrawn DE4141705A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914141705 DE4141705A1 (en) 1991-12-18 1991-12-18 Precision stretching device making true=to=scale copy - ensures uniform tension of film over all parts of surface of package vulnerable to excessive pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914141705 DE4141705A1 (en) 1991-12-18 1991-12-18 Precision stretching device making true=to=scale copy - ensures uniform tension of film over all parts of surface of package vulnerable to excessive pressure

Publications (1)

Publication Number Publication Date
DE4141705A1 true DE4141705A1 (en) 1993-06-24

Family

ID=6447313

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19914141705 Withdrawn DE4141705A1 (en) 1991-12-18 1991-12-18 Precision stretching device making true=to=scale copy - ensures uniform tension of film over all parts of surface of package vulnerable to excessive pressure

Country Status (1)

Country Link
DE (1) DE4141705A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6305145B2 (en) 1998-02-11 2001-10-23 Oy M. Haloila Ab Wrapping apparatus
WO2008129432A1 (en) * 2007-04-18 2008-10-30 Atlanta Stretch S.P.A. Apparatus for enabling machines which wrap usually palletized loads with extendable and pre-stretched film to operate at high speed and with control over the tension of the film on the wrapped load

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6305145B2 (en) 1998-02-11 2001-10-23 Oy M. Haloila Ab Wrapping apparatus
WO2008129432A1 (en) * 2007-04-18 2008-10-30 Atlanta Stretch S.P.A. Apparatus for enabling machines which wrap usually palletized loads with extendable and pre-stretched film to operate at high speed and with control over the tension of the film on the wrapped load

Similar Documents

Publication Publication Date Title
CA2183783A1 (en) Electronically Controlled High Speed Press Feed
ATE29448T1 (en) DEVICE FOR WRAPPING A LOAD WITH AN EXTENSIBLE PLASTIC FILM.
DE2739515C3 (en) Device for winding up a web of material, in particular made of paper
DE2432368B2 (en) Method for winding a tape onto a winding roll
DE1957485A1 (en) Method for measuring web tension
DE4141705A1 (en) Precision stretching device making true=to=scale copy - ensures uniform tension of film over all parts of surface of package vulnerable to excessive pressure
DE8615787U1 (en) Unwinding device
DE2053762C2 (en) Tape transport device
DE3268058D1 (en) Stand for manually unwinding foils
DE1460275A1 (en) Drive device for production and treatment lines for material webs
DE2906982A1 (en) IMAGE CHANGER FOR LARGE SCREEN PROJECTOR
DE2058748C3 (en) Device for the treatment of continuous materials in a bound goods guide
CH264925A (en) Method and device for the production of tubular bodies by winding sheet material.
DE3417574C2 (en)
DE1499122C3 (en) Arrangement for keeping the tension of the winding material constant in an unwinding device
DE3004321A1 (en) Embossing thermoplastic film laminates - combined films are heated, embossed and cooled by separately driven thermostatically controlled rollers
DE243276C (en)
DE102015005066A1 (en) A method of moving a web of thermoplastic film by a preheater to heat a web of thermoplastic film and preheat to perform the method
KR200254905Y1 (en) Device for Controlling Overload in a Coating Machine
DE2310029A1 (en) FILM MULTIPLIER
EP0102589A2 (en) Tension control device for a shaft winder
CH432969A (en) Device for regulating the feed length of a material strip
CH673807A5 (en)
DE1797614C3 (en)
SU484579A2 (en) Device for adjusting the tension of the wire

Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee