EP0951427A1 - Pince de fermeture pour sachets et flexibles et matrice permettant de les fermer - Google Patents

Pince de fermeture pour sachets et flexibles et matrice permettant de les fermer

Info

Publication number
EP0951427A1
EP0951427A1 EP98901338A EP98901338A EP0951427A1 EP 0951427 A1 EP0951427 A1 EP 0951427A1 EP 98901338 A EP98901338 A EP 98901338A EP 98901338 A EP98901338 A EP 98901338A EP 0951427 A1 EP0951427 A1 EP 0951427A1
Authority
EP
European Patent Office
Prior art keywords
clip
closure
wire section
base
section
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.)
Granted
Application number
EP98901338A
Other languages
German (de)
English (en)
Other versions
EP0951427B1 (fr
Inventor
Jürgen Hanten
Gerhard Lapp
Manfred Metzler
Jürgen Reitz
Günter Vermehren
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.)
Poly Clip System GmbH and Co KG
Original Assignee
Poly Clip System GmbH and Co KG
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 Poly Clip System GmbH and Co KG filed Critical Poly Clip System GmbH and Co KG
Publication of EP0951427A1 publication Critical patent/EP0951427A1/fr
Application granted granted Critical
Publication of EP0951427B1 publication Critical patent/EP0951427B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/1616—Elements constricting the neck of the bag
    • B65D33/1641—Staples, clips or clamps made of metal
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/14—Bale and package ties, hose clamps
    • Y10T24/1457—Metal bands
    • Y10T24/1478—Circumferentially swagged band clamp
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/14—Bale and package ties, hose clamps
    • Y10T24/1457—Metal bands
    • Y10T24/1488—Swedged to lock band ends
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/15—Bag fasteners
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/15—Bag fasteners
    • Y10T24/152—Swedged bag tie

Definitions

  • the invention relates to a closure clip for bags, film tubes or the like, consisting of a wire section, with a pre-bent clip base and two clip legs adjoining this on both sides.
  • the invention further relates to a wire section for the closure clip and to a die having two sliding grooves for closing the closure clip.
  • Simple closure clips consisting of a wire section can be produced in that an endless wire is fed to a sealing machine, a section of which is separated from the wire in the sealing machine and the wire section is finally bent, for example, around a bag braid to be closed. It is also known to feed a closing machine, not endless wire, but already separate wire sections.
  • the wire sections can be straight or pre-shaped in a U-shape. For magazining, these wire sections are generally fastened next to one another on a carrier tape, so that they form a magazine strand.
  • the advantage of such closure clips formed from a wire section lies in the simple manufacture of these closure clips.
  • the tightness of the closures that can be achieved with the known closure clips consisting of a wire section leaves something to be desired.
  • Closing machines which have a stamp and a die are usually used as a tool for closing the said closure valves.
  • the U-shaped pre-bent locking clip is first taken from a magazine by the stamp and guided against rotation. Then the punch and die are moved towards each other. During this movement, the closure clip encircles the packaging material gathered into a braid. Then reach the free ends of the inn! the locking clip the die first and are guided in the course of the further movement of sliding grooves in the die.
  • the legs of the locking clip are plastically deformed, so that there is finally a more or less circular closed locking clip.
  • Matrices which have two semicircular sliding grooves arranged parallel to one another.
  • the main plane of the two slide rails is slightly inclined with respect to the main plane of the locking clip, so that each sliding groove has an entry point which lies in the main plane of the locking clip.
  • the main plane is the plane in which the center line of a slide groove or the locking clip runs.
  • the solution to this problem consists, according to the invention, in a closure clip of the type mentioned at the outset, which is characterized in that the two Kiammer legs taper continuously from their ends on the clamp base side toward their free ends.
  • the victory is based on the knowledge that a closure clip made of a wire with a uniform cross-section always bends particularly strongly in the area of the arc sections between the legs and the clip base because the bending stress is greatest there. Therefore, closure clips consisting of a wire section of uniform cross-section never take the ideal for tight closures Circular shape. Due to the tapering wire cross-section of the closure clip according to the invention, the bending stress is distributed much more evenly over the entire length of the legs, so that the closure clip almost assumes the ideal circular shape when closed.
  • the bottom of the clip and the clip leg! the locking clip has a round cross section.
  • a closure clip can be produced in a simple and inexpensive manner from a piece of round wire which is partially stretched, so that the tapered legs result.
  • the clip base is preformed in a circular arc.
  • the arch-shaped preforming of the clip base supports the approach of the clip to the ideal circular shape when closing.
  • a locking chamber is preferred which has a shoulder on the outer radius of the clamp base.
  • the solution to the problem on which the invention is based also consists in a wire section for the closure clips according to the invention, which is characterized in that the wire section tapers continuously toward its two ends.
  • a wire section achieves the object according to the invention in particular in connection with machines of this type, to which straight, not pre-bent wire sections are fed.
  • the individual wire sections are first bent into a U shape in the closing machine (DE 41 20 440).
  • the cross section of the wire section decreases continuously from the center of the wire section to its two ends, so that the wire section tapers on both sides in the region of its later clamp base. In this way, the wire section in the area of the base of the clip is evenly subjected to bending during preforming and therefore easily assumes an arcuate shape.
  • a die of the type mentioned at the beginning also contributes to achieving the object, the two sliding grooves narrowing conically starting from one entry point each.
  • Such a matrix has the advantage that the Tapering clamp legs of the closure clip according to the invention are guided closer together when closing than with conventional dies.
  • the die can be made narrower, so that only a smaller space has to be provided in the closing machine for the die.
  • Closure chambers closed with the die according to the invention take up less space on the packaging sleeve gathered together to form a braid, so that less packaging sleeves are needed for the closure.
  • the die is designed in such a way that the centers of curvature of the sliding grooves are mirror-symmetrically offset from the center of the recess and their parallel axes are inclined more weakly than the axis of the rib relative to the axis of the recess. The result of this is that the tapered ends of the clamp legs are pressed more firmly against the packaging sleeve, which is gathered into a braid, and laterally against one another when they are closed.
  • Figure 1 is a closure clip according to the invention with tapered legs and a round cross-section.
  • FIG. 2 shows a modification of the closure clip from FIG. 1 with an arcuate clip base with an attachment
  • FIGS. 1 and 2 shows a wire section for the closure clips from FIGS. 1 and 2;
  • FIG. 4 shows a variant of the wire section from FIG. 3;
  • FIGS. 5a to C show different views or partial sections of a known die for closing the closure clips from FIGS. 1 and 2;
  • FIG. 6 shows a closed closure clip according to the prior art in side view (and top view);
  • FIG. 8 shows a closure chamber closed with the die from FIG. 7 with tapered legs.
  • the variant of a closure clip 10 shown in FIG. 1 has a preformed clip base 12, to which a leg 14 is connected on both sides.
  • Clip base 12 and leg 14 each have a round cross section. This steadily decreases in the legs 14 starting from their ends on the clamp base side towards their free ends.
  • the tapered legs 14 each form a carrier of the same bending stress when the closure clip from FIG. 1 is closed, so that they round evenly when closed.
  • a closure clip 10 which is closed in this way has only a slight tendency to spring open under the influence of the internal pressure exerted by the packaging material.
  • differing braid diameters are compensated for by the fact that the leg ends overlap to different extents after the closure. In this way, a wide range of different plait diameters can be covered with a closure clip geometry. This simplifies storage, since only a few variants of the closure clip 10 have to be kept in stock.
  • FIG. 2 shows a variant of the closure clip 10 from FIG. 1, in which the clip base 12 'is not flattened in the middle, but has a circular arc shape.
  • the clip base 1 2 ' is equipped on its outer radius with a shoulder 16, which makes it possible to precisely guide the closing clip 10' during closing by the shoulder 16 engaging in a corresponding groove in a closing tool. In particular, this prevents the locking clip 10 'from twisting during closing.
  • clamp base 1 2 'and the legs 14' do not have a round cross section, but - with the exception of the area of the attachment 16 - a hexagonal one.
  • Figures 3 and 4 each show a wire section 20 and 20 ', from which closure clips of the type shown in Fig. 1 or similar can be formed.
  • the wire section 20 from FIG. 3 has a cylindrical middle piece, to which end sections 24 which are tapered on both sides towards the ends are connected.
  • the middle piece 22 is provided to be pre-shaped in a U-shape are so that it forms a bracket base such as the closing bracket 10 of FIG. 1.
  • the end sections 24 of the wire section 20 then form the legs 14 of the locking clip 10.
  • the wire section 20 can be preformed into the open closure clip 10 outside the sealing machine, for example at the closure clip manufacturer.
  • the closing chamber is then - possibly as part of a magazine strand - fed to the closing machine in the preformed state.
  • the preforming of the closing chamber 10 can, however, also only take place within the closing machine before the actual closing process.
  • a wire section is fed to the sealing machine in the stretched state.
  • the wire section 20 'according to FIG. 4 is particularly suitable for this case.
  • the wire section 20 'tapers continuously from its center to its two ends. It practically consists of only two conical end sections 24 '; a cylindrical middle piece 22 as in the wire section 20 is omitted.
  • the middle region of the wire section 20 ' which later forms the clamp base 1 2 already represents a carrier of the same bending stress, which easily assumes a uniformly round shape during preforming in the sealing machine.
  • the end regions of the wire section 20 'forming the clamp legs 24' remain stretched. They are only bent around the braid to be closed when the closure chamber is closed. Since also the Klammerschenke! 24 'represent a carrier of uniform bending stress, they also assume the ideal circular arc shape when closed.
  • FIGS. 5a to c show a known die 30 of a tool for closing closure clips according to FIGS. 1 and 2.
  • FIGS. 5b and 5c represent the cuts designated in FIGS. 5a.
  • the die 30 has a recess in the form of a partially cylindrical recess 32.
  • Two immediately adjacent, parallel sliding grooves 36 and 38 are milled into the wall 34 thereof.
  • Both sliding grooves 36, 38 have the shape of an arc of the same radius, are also rounded in cross section and form a rib 35 between them.
  • the centers of both arcs also lie on a common center axis 40 which intersects the cylinder axis 42 of the recess 32.
  • the central axis 40 is inclined relative to the cylinder axis 42 (for example at an angle of 1 2 °) that the entry points 44 and 46 of the gliding rollers.
  • both sliding grooves 36, 38 ie their apexes lie approximately in the central plane 48 of the die 30, which is perpendicular to the cylinder axis 42.
  • the manufacture of both sliding grooves 36, 38 takes place with a one-piece milling cutter which is pivoted about the above-mentioned inclination angle about the vertical axis defined by the intersection of the cylinder axis 42 with the central plane 48.
  • the die 30 ' also has two sliding grooves 36' and 38 ', the main planes 37', 39 'of which run parallel to one another, but are less inclined relative to the central plane 48' compared to FIG. 5, with the inclination of the rib 35 'unchanged are.
  • the center points M2 and M3, and thus the axes of rotation 40 ', 40 "perpendicular to the main planes 37 ' , 39 ', are offset parallel to one another, in mirror images to both sides of the axis 40, which are at the same angle to the axes of rotation 40' , 40 ", which the rib 35 'encloses with the main planes 37', 39 '.
  • the shape of the closed locking clip can be adapted to a wide variety of uses.
  • FIG. 8 shows a side view of the result of a closing process when a closing chamber according to FIG. 4 is processed with a die according to FIG. 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Bag Frames (AREA)
  • Clamps And Clips (AREA)

Abstract

L'invention concerne une pince de fermeture (10) composée d'une section en fil métallique, pour sachets, films tubulaires ou analogues, qui comprend un fond (12) précintré et deux branches (14) qui s'y raccordent de part et d'autre. Les deux branches vont en s'amenuisant de leurs extrémités situées côté fond de la pince jusqu'à leurs extrémités libres. L'invention concerne en outre une section de fil métallique pour réaliser ce type de pinces de fermeture, qui va en s'amenuisant de manière constante en direction des deux extrémités. L'invention concerne par ailleurs une matrice (30) pour fermer la pince de fermeture, avec deux rainures de guidage (36, 38) qui vont chacune en s'amenuisant en cône depuis un point de guidage de départ.
EP98901338A 1997-01-11 1998-01-06 Pince de fermeture pour sachets et flexibles et matrice permettant de les fermer Expired - Lifetime EP0951427B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19700692 1997-01-11
DE19700692A DE19700692A1 (de) 1997-01-11 1997-01-11 Verschlußklammer für Beutel und Schläuche sowie Matrize für ihre Verarbeitung
PCT/EP1998/000022 WO1998030460A1 (fr) 1997-01-11 1998-01-06 Pince de fermeture pour sachets et flexibles et matrice permettant de les fermer

Publications (2)

Publication Number Publication Date
EP0951427A1 true EP0951427A1 (fr) 1999-10-27
EP0951427B1 EP0951427B1 (fr) 2001-09-12

Family

ID=7817142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98901338A Expired - Lifetime EP0951427B1 (fr) 1997-01-11 1998-01-06 Pince de fermeture pour sachets et flexibles et matrice permettant de les fermer

Country Status (6)

Country Link
US (1) US6401306B1 (fr)
EP (1) EP0951427B1 (fr)
AU (1) AU5765598A (fr)
DE (2) DE19700692A1 (fr)
ES (1) ES2162412T3 (fr)
WO (1) WO1998030460A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1980496A2 (fr) 2005-09-09 2008-10-15 Tipper Tie technopack GmbH Dispositif de fermeture d'un tuyau flexible d'emballage

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US20060075722A1 (en) * 2004-10-25 2006-04-13 Delaware Capital Formation, Inc. Clippers configured to operate with elastomeric clips, associated methods, systems and computer program products
US20060174590A1 (en) * 2005-02-04 2006-08-10 Robert Pinto Net clip and clipper
US7565780B2 (en) * 2005-02-04 2009-07-28 Poly-Clip System Corp. Clip and clipper
EP1899229B1 (fr) * 2005-06-16 2010-12-15 Poly-Clip System Corp. Systeme de fermeture d'attache
CA2637264A1 (fr) * 2006-01-27 2007-08-09 Poly-Clip System Corp. Attache et dispositif d'attache
US7287359B1 (en) 2006-06-08 2007-10-30 Poly-Clip System Corp. Tag lifter plate
DE102007012776A1 (de) * 2007-03-16 2008-09-18 Poly-Clip System Gmbh & Co Kg Verschlussklammer mit Rundboden
US8808066B2 (en) * 2007-09-25 2014-08-19 Poly-Clip System Corp. Plastic wire clipper/stuffer
DE202008010807U1 (de) 2008-08-05 2009-12-31 Tipper Tie Technopack Gmbh Verschlussklammer
DE202008010478U1 (de) 2008-08-06 2009-12-17 Tipper Tie Technopack Gmbh Verschlussklammer für schlauchförmige Verpackungen
US8266771B2 (en) * 2008-10-09 2012-09-18 Scott Jr Coley A Twist type fence tie
ES2523867T3 (es) 2010-04-09 2014-12-02 Poly-Clip System Gmbh & Co. Kg Presilla de cierre y matriz para cerrar dicha presilla
DE202011106293U1 (de) 2011-09-30 2013-01-07 Poly-Clip System Gmbh & Co. Kg Verschlussclip mit mehreren Dornen
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USD1004088S1 (en) 2021-08-19 2023-11-07 Medline Industries, Lp Surgical staple
USD1003436S1 (en) 2021-08-19 2023-10-31 Medline Industries, Lp Surgical staple

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1980496A2 (fr) 2005-09-09 2008-10-15 Tipper Tie technopack GmbH Dispositif de fermeture d'un tuyau flexible d'emballage
EP2292521A1 (fr) 2005-09-09 2011-03-09 Tipper Tie technopack GmbH Bride de fermeture pour un tube d'emballage
EP2292521B1 (fr) 2005-09-09 2017-06-14 Tipper Tie technopack GmbH Bride de fermeture pour un tube d'emballage

Also Published As

Publication number Publication date
EP0951427B1 (fr) 2001-09-12
DE19700692A1 (de) 1998-07-23
ES2162412T3 (es) 2001-12-16
DE59801440D1 (de) 2001-10-18
WO1998030460A1 (fr) 1998-07-16
AU5765598A (en) 1998-08-03
US6401306B1 (en) 2002-06-11

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