EP0870679A1 - Machine à cercler des paquets - Google Patents

Machine à cercler des paquets Download PDF

Info

Publication number: EP0870679A1
Authority: EP; European Patent Office
Prior art keywords: band; strap; transducer; section; tape
Prior art date: 1997-04-08
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.): Granted

Application number

EP98104203A

Other languages

German (de)

English (en)

Other versions

EP0870679B1 (fr

Inventor

Karl-Hans Schüttler

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.)

Signode Packaging Systems GmbH

Original Assignee

Signode Bernpak 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.)

1997-04-08

Filing date

1998-03-10

Publication date

1998-10-14

1998-03-10 Application filed by Signode Bernpak GmbH filed Critical Signode Bernpak GmbH

1998-10-14 Publication of EP0870679A1 publication Critical patent/EP0870679A1/fr

2000-01-26 Application granted granted Critical

2000-01-26 Publication of EP0870679B1 publication Critical patent/EP0870679B1/fr

2018-03-10 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

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
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/24—Securing ends of binding material
- B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive
- B65B13/322—Friction welding

Definitions

the invention relates to a device for strapping of packages according to the preamble of the claim 1.
Vibration welding using a high Frequency driven vibrator is characterized that the transducer in the band closure area one of the two overlapping band sections in high frequency vibrations relative to the other Belt section moves, which creates frictional heat, the areas of the overlapping areas touching each other Sections of tape melt so that they melt together be cohesively connected.
a used training of the subject of US 4,776,905 provides instead of the button-shaped order its longitudinal axis freely rotatable band clamp this around a distant axis can also be swiveled to arrange. Such a clamp can cross Belt movement of the end of the belt carried by the transducer on a larger radius and therefore a little better but still not follow optimally. Otherwise exist the disadvantages mentioned in the subject of US 4,776,905 here too.
the device is located in the tape running direction in front of and behind this vibration welding unit, band clamps, which basically allow the strap closure under the tension of the strapped tape, but the tape is in the fastener area all directions more or less heavily loaded.
band clamps which basically allow the strap closure under the tension of the strapped tape, but the tape is in the fastener area all directions more or less heavily loaded.
the object of the invention based, a device for strapping packages according to the friction welding process according to the generic term of claim 1 to create a closure training permitted under high belt tensile forces, which is also able to carry relatively small packaged goods strapping high strap tension and at the on complex no additional drives for unit parts can be.
the invention solves this problem with the features of claim 1 and is characterized accordingly, that the transducer oscillates about an axis, which runs through the movable jaw and that this around the same axis in the same direction as the transducer oscillates, but only from the vibrating band section is carried along.
the transducer Because the oscillator oscillates around an axis, that runs through the movable jaw, the transducer leads a circular arc around this axis Moving back and forth across a segment of a circle out. Its movement is only at one point in the trajectory oriented perpendicular to the belt longitudinal direction, so that the band section is much less is claimed for shear. If the jaw now according to the same axis according to the same axis the oscillator oscillates, act between the jaw and the band held by her has no relative movements. According to the invention However, the jaw is not driven, it is only carried by the vibrating band section.
An optimal vibration synchronous carrying of the Jaw is by the vibrating band section according to a further embodiment of the invention especially given when moving Jaw interacting abutment one section of the transducer itself.
the consequence of this is that the clamping jaw has very high clamping forces can exercise. It is also a very simple one Design realized.
the friction surface of the Transducer with the opposite surface of one Vibration abutment formed an inclination angle, pointing away from the vibrating axis of the transducer opens in the direction of the tape and has an order of magnitude of approximately 0.3 ° to 1.0 °.
This will make the different Distance from band sections to the oscillation center in coordination with the pressure forces that occur taken into account in an advantageous manner. From away from the oscillation axis the pressure forces increase increasing vibration path according to the angular inclination continuously. This will be an extraordinary achievement uniform stress on the unit parts and the tape over the length of the closure created away and a completely homogeneous weld.
the oscillation angle of the transducer is otherwise preferably small and of the order of magnitude from about 4 ° to 5 °.
the head plate of the Band closure unit is at the end of the hollow shaft attached and cantilevered from there into the strap level a. Because of this conception, the entire tape closure unit from the closure area swing out, with its simple way and Way released the strap loop surrounding the package can be. Also the means of control can be very simple. In this regard the features of claims 8 to 10 of importance.
a Another particular advantage is that the drive shaft forms a central drive via the all stroke-controlled functional parts of the strap closure unit can be clock controlled.
a band strapping machine in its entirety is designated by 10 in FIG. 1.
On your machine frame 11 is a substantially closed Band guide channel 12, through and around with package 13 indicated by dash-dotted lines around a thermoplastic plastic tape 14 one Band closure unit 15 is supplied. Its job consists of overlapping end portions of the around the package 13 led band 14 by means of Friction welding to be welded together by exposure to heat.
the belt 14 is outside the machine frame 11 on a rotatably mounted tape reel (drum 55) stocked.
the belt 14 passes through on the machine input side a pair of rollers 16, which two to each other opposite hinge surfaces frictionally has attacking roles that towards each other tensioned and thus held with pressure against the band 14 are.
the motor drive of this pair of rollers 16 conveys the tape 14 into a tape storage 17, the one such length of tape 14 stored tension-free, such as he at least for the following strapping and for the Distance of the belt 14 to the sealing unit 15 is needed.
a second pair of rollers 18 is arranged following the tape storage 17 in the tape feed direction. Also the two rollers of this pair of rollers 18 drive the belt 14 frictionally.
This pair of rollers 18 is reversible driven, because it serves the one shot of the tape 14 in the tape guide channel 12 and, with opposite drive direction, on the other hand that Retraction of the band 14 and its tightening around the package 13. In the latter sense, the pair of rollers is 18th a so-called "low tension clamping device".
Fig. 2 illustrates details of the tape lock assembly 15. According to this illustration was the band 14 by means of the weft roller pair 18th through the tension drum 19 and through the belt guide 21 fed through the tape closure unit 15 until the leading end of tape 14 'against a so-called bullet switch 23 ran.
the strapping process begins itself, after a package 13 has been placed in the channel 12.
the pair of rollers 18 receives the command to reverse Drive and pulls the tape 14 back, which accordingly the friction forces exerted by the pair of rollers 18 to tighten the package 13 because the first band clamp 25 the front band section 14 ' presses against the lower surface of the head plate 22.
a cutting knife attached to the weld clamp 27 46 has the length of strap required for strapping separated from the tape supply. Now that's about that Package 13 tightened band 14 in the welding position to form a strap closure.
FIG. 4 the essential functional parts larger than Fig. 3 shows - mainly characterized by the fact that the front End of band from jaw 25 'of the first band clamp 25 in cooperation with the head plate 22 on the one side of the closure formation zone is held, while the jaw 41 'of the band clamp 41 the other Strap end 14 '' on the other side of the strap closure zone presses against a clamping abutment 42. Every jaw 25 'and 41' thus holds only one band section each firmly, and the overlapping band sections 43 and 44 to be connected together are located in the band closure zone in between.
the Strap closure zone is from resulting from strapping Belt tension forces kept free.
the top plate 22 is also a vibrator or Vibrator and about a vertical axis designated 29 driven oscillating.
the axis of oscillation 29 is at the same time the central axis of the band clamp 25 Clamping jaw 25 'which can rotate freely around this axis is.
the arrangement is made so that the bearing shaft 30 of the band clamp 25 in a Hollow shaft 31 is guided. 5 and 7 show is the hollow shaft 31 with the oscillating head plate 22 Movementally connected.
the vibrator 22 is driven by means of a motor 33 flanged to a bearing block 32, a tuning fork 35 via an eccentric shaft 34 drives oscillating, with the hollow shaft 31 rotatably connected is.
the vibrator 22 performs oscillating Movements around the vertical axis 29. This is shown in Fig. 6, the one end position the swinging motion with solid, the other with dash-dotted lines is shown. Shown is a top view of the transducer 22, the partially erupted to the one below To make jaw 25 'of the band clamp 25 visible.
the oscillatory movement of the vibrator 22 leads on the one hand the band section 43 on which the Vibrator 22 attacks, relative to that of the weld clamp 27 held opposite band section 44 moved back and forth across a sector of a circle becomes what becomes frictional heat and thereby softening of the mutually facing surfaces of the overlapping Band sections leads.
the oscillation angle is with about 4 ° to 5 ° small, which is both for protection of the belt and the aggregate parts contributes as itself also reduces wear and noise.
the band section oscillatingly moved by the oscillator 22 43 is the first of the jaw 25 ' Band clamp 25 also against the bottom of the Vibrator 22 pressed so that the vibrator 22nd oscillating belt section 43 rotatably guided in the hollow shaft 31 of the vibrator 22 Clamping jaw 25 'of the band clamp 25. This will the shear forces acting on the band section 43 kept so low that they are not harmful Effects on a secure closure, including under high belt tension can occur.
the control of the moving functional parts takes place centrally via a control shaft 45 with control cams 47 for the stroke-controlled band clamp 25, one Control cam 48 for the welding clamp 27 and one Control cam 49 for the second band clamp 41.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Basic Packing Technique (AREA)
Package Closures (AREA)

EP98104203A 1997-04-08 1998-03-10 Machine à cercler des paquets Expired - Lifetime EP0870679B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19714309		1997-04-08
DE19714309A DE19714309A1 (de)	1997-04-08	1997-04-08	Vorrichtung zum Umreifen von Packstücken

Publications (2)

Publication Number	Publication Date
EP0870679A1 true EP0870679A1 (fr)	1998-10-14
EP0870679B1 EP0870679B1 (fr)	2000-01-26

Family

ID=7825693

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP98104203A Expired - Lifetime EP0870679B1 (fr)	1997-04-08	1998-03-10	Machine à cercler des paquets

Country Status (5)

Country	Link
EP (1)	EP0870679B1 (fr)
AU (1)	AU694711B1 (fr)
DE (2)	DE19714309A1 (fr)
ES (1)	ES2144325T3 (fr)
NZ (1)	NZ330120A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2003026967A1 (fr) *	2001-09-20	2003-04-03	Cyklop Gmbh	Dispositif pour mettre sous tension et fermer des bandes de cerclage
US6708606B1 (en)	2002-10-31	2004-03-23	Illinois Tool Works, Inc.	Strapper with improved winder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10016717C2 (de) *	2000-04-04	2002-11-28	Conti Temic Microelectronic	Verfahren zum Positionieren und Fixieren von Bauteilen
DE102004027730A1 (de)	2004-05-07	2006-02-23	Georg Lang	Vorrichtung zur Umreifung eines Packguts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2055685A (en) *	1979-08-17	1981-03-11	Hoffmann Cyklop	Welding apparatus for welding overlapping strips of thermoplastic material
DE4014305A1 (de) *	1990-05-04	1991-11-07	Rmo Systempack Gmbh	Vorrichtung zum verbinden von sich ueberlappenden abschnitten eines thermoplastischen bandes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3442732A (en) *	1965-08-13	1969-05-06	Signode Corp	Friction-fusion strap sealing
US3442203A (en) *	1967-04-10	1969-05-06	Signode Corp	Automatic strapping machine employing friction-fused joints
US3554845A (en) *	1967-11-17	1971-01-12	Fmc Corp	Friction welding of plastic strapping
US3554846A (en) *	1968-03-21	1971-01-12	Fmc Corp	Friction welding apparatus
US4776905A (en) *	1986-06-06	1988-10-11	Signode Corporation	Method and apparatus for producing a welded joint in thermoplastic strap
US5306383A (en) *	1992-10-30	1994-04-26	Signode Corporation	Method and apparatus for producing a welded joint in thermoplastic strap with differential pressure

1997
- 1997-04-08 DE DE19714309A patent/DE19714309A1/de not_active Withdrawn
1998
- 1998-03-10 DE DE59800086T patent/DE59800086D1/de not_active Expired - Lifetime
- 1998-03-10 ES ES98104203T patent/ES2144325T3/es not_active Expired - Lifetime
- 1998-03-10 EP EP98104203A patent/EP0870679B1/fr not_active Expired - Lifetime
- 1998-03-25 AU AU59502/98A patent/AU694711B1/en not_active Ceased
- 1998-04-03 NZ NZ330120A patent/NZ330120A/xx unknown

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2055685A (en) *	1979-08-17	1981-03-11	Hoffmann Cyklop	Welding apparatus for welding overlapping strips of thermoplastic material
DE4014305A1 (de) *	1990-05-04	1991-11-07	Rmo Systempack Gmbh	Vorrichtung zum verbinden von sich ueberlappenden abschnitten eines thermoplastischen bandes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2003026967A1 (fr) *	2001-09-20	2003-04-03	Cyklop Gmbh	Dispositif pour mettre sous tension et fermer des bandes de cerclage
US7204187B2 (en)	2001-09-20	2007-04-17	Cyklop Gmbh	Device for tensioning and sealing tightening straps
US6708606B1 (en)	2002-10-31	2004-03-23	Illinois Tool Works, Inc.	Strapper with improved winder

Also Published As

Publication number	Publication date
ES2144325T3 (es)	2000-06-01
DE19714309A1 (de)	1998-10-15
AU694711B1 (en)	1998-07-23
NZ330120A (en)	1999-05-28
EP0870679B1 (fr)	2000-01-26
DE59800086D1 (de)	2000-03-02

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Publication	Publication Date	Title
DE2658579C2 (de)	1984-12-06	Vorrichtung zum automatischen Umschnüren einer Packung mit einem thermoplastischen Band
DE4014305C2 (de)	1996-07-18	Vorrichtung zum Verbinden von sich überlappenden Abschnitten eines thermoplastischen Bandes
DE4018659C2 (de)	1996-07-11	Reibschweißvorrichtung zur Herstellung eines Verschlusses an einem biegsamen thermoplastischen Umreifungsband
DE1536270C2 (de)	1975-03-20	Vorrichtung zum Umschnüren von Gegenständen
DE2324293C3 (de)	1979-02-15	Vorrichtung zum Umschnüren eines Ballens o.dgl
DE2521474C3 (de)	1978-11-02	Spann- und Reibungsschweißvorrichtung für ein einen Gegenstand umschlingendes Band aus thermoplastischem Kunststoff
DE3507142A1 (de)	1985-10-10	Vorrichtung fuer thermoplastbeutel
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DE3878768T2 (de)	1993-06-09	Apparat zum setzen eines filmbands unter spannung.
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