EP0753460B1 - Mâchoire de serrage - Google Patents

Mâchoire de serrage Download PDF

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Publication number
EP0753460B1
EP0753460B1 EP96106417A EP96106417A EP0753460B1 EP 0753460 B1 EP0753460 B1 EP 0753460B1 EP 96106417 A EP96106417 A EP 96106417A EP 96106417 A EP96106417 A EP 96106417A EP 0753460 B1 EP0753460 B1 EP 0753460B1
Authority
EP
European Patent Office
Prior art keywords
helical compression
compression spring
guide spindle
gripping member
base plate
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.)
Expired - Lifetime
Application number
EP96106417A
Other languages
German (de)
English (en)
Other versions
EP0753460A1 (fr
Inventor
Norbert Christmann
Gerhard Dipl.-Ing. Fries
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.)
Tiromat Kraemer and Grebe GmbH and Co KG
Original Assignee
Tiromat Kraemer and Grebe GmbH and Co KG
Kraemer and Grebe 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 Tiromat Kraemer and Grebe GmbH and Co KG, Kraemer and Grebe KG filed Critical Tiromat Kraemer and Grebe GmbH and Co KG
Publication of EP0753460A1 publication Critical patent/EP0753460A1/fr
Application granted granted Critical
Publication of EP0753460B1 publication Critical patent/EP0753460B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B65B41/14—Feeding webs from rolls by grippers
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch
    • Y10T403/602—Biased catch or latch by separate spring

Definitions

  • the invention relates to a clamping piece, in particular for Packaging machines, with a storage tab, one in the Bearing bracket mounted guide spindle with one on this attached clamping piece, one overlapping the guide spindle Helical compression spring and a stop piece for the Helical compression spring, the stop piece in a radial, concentric retaining groove of the guide spindle, axially oriented, is provided.
  • a clamping piece is known from FR-A-2 484 381.
  • Link chains in particular have proven their worth equip each link with a corresponding clamping piece is that when a first sprocket overflows is open, so that the edge of a packaging film is grasped and excited, and that in the same Way again when overrunning a second sprocket is opened, whereby the (now processed) packaging film web is released.
  • a snap ring does not offer sufficient security for not detaching from the lead screw, for example, if it is installed improperly and not with the necessary clamping force is provided on the lead screw, which is also the case if the diameter at the bottom of the Retaining groove outside of the one required for the snap ring Tolerance lies. No matter whether this diameter is too small or too large during operation of the snap ring from the area of Remove the lead screw and the sudden relaxation of the Summon the tensioning piece, causing damage can lead to the associated conveyor. An exam whether the snap ring is properly under tension is assembled with simple, for workshop operation suitable means not possible or too expensive. A proper one Assembly is therefore undesirable on the skill and conscientiousness of the assembly staff dependent.
  • the invention has therefore set itself the task ring-shaped stop piece of the initially specified Art so that it can be used without hesitation can when it comes in contact with food and that also after its assembly with the lead screw very secure stop for the movable spring end of the Helical compression spring forms without losing skill and reliability of the assembly staff special requirements should be asked; its installation alone, for example, in a clamping piece, is already the guarantee offer that the stop piece even with continuous high dynamic and constantly changing loading and Relief and any length of time the mobile Spring end of the helical compression spring safely oriented. Nevertheless the stop piece should still be cheap to produce be and do not require additional space and assembly effort.
  • the object is achieved in that the Stop piece made of a flat, circular base plate and one at the outer edge of the base plate in Direction towards the spring end, ring-cylindrical, the spring end is at least predominantly comprehensive collar and the inner one, which lies against the bottom of the holding groove Edge of the base plate through an insertion slot with the outer Edge is connected, the width of the insertion slot adapted to the diameter at the bottom of the retaining groove and is dimensioned so that the stop piece just barely can be pushed onto the bottom of the retaining groove without jamming.
  • the collar is parallel and symmetrical to the insertion slot interrupted by a recess whose Width at least equal to the diameter of the lead screw and is preferably slightly larger than this.
  • the collar is executed by a flare formed on the outer edge of the base plate.
  • Such a compact stop can be easier Way as a stamped and bent part and very inexpensive getting produced. It is made by the helical compression spring itself, after its assembly, held in place: The stop piece is only axially by the spring force burdened; lateral forces that may occur on it not able to stop the stop piece from its central position push it out because it's over the collar and the spring end is centered safely. For this reason it is also a complete one Assured with high security: the The spring end can only (clearly visible!) Inside the collar be lowered onto the base plate when the stop piece with its insertion slot so far into the holding groove is inserted that the inner edge of the Base plate immediately adjacent to the bottom of the retaining groove is. If the assembly is incomplete the spring end not within the collar, but lies, clearly visible, on this, as an indication that the assembly is not done properly is.
  • the collar is parallel and symmetrical interrupted to the insertion slot by a recess is that their width is the diameter of the Lead screw at least the same and preferably slightly is larger than this. That way it can Stop piece regardless of the width of the holding groove can be mounted and this can in particular also Fall below the total height of the stop piece and only little larger than the thickness of the base plate be.
  • Hygienic training of the stop piece is guaranteed if it's from a stainless, nutritionally indifferent, material, preferably Steel.
  • the dimension and material certain deformation resistance of the Stop piece is chosen so that an elastic or permanent deformation under the long-lasting influence the helical compression spring is omitted.
  • the preload can be chosen very high, so that a correspondingly high Tension can be generated when the stop piece for example on a spring loaded by the helical compression spring, against their spring force releasable clamping piece is used.
  • Such a clamping piece in particular for use a conveyor chain for tensioning and subsequent transport a packaging film web in a packaging machine, is advantageous on a chain link provided as a link chain conveyor chain.
  • the arrangement can be made such that the lead screw transversely to the conveying direction on a bearing block is axially movable, the U-shaped from a on the chain link attached bracket and two Bearing tabs exist, the helical compression spring except strikes a bearing bracket on the stop piece, on the outside one with the lead screw one-piece clamping piece for the packaging film under the effect of the helical compression spring is present and against the effect of the helical compression spring can be lifted if the lead screw on an axially aligned, through the led other storage tab and overhang to this Push pin is loaded, for example by a Ring saddle of a chain wheel for the link chain.
  • a such an arrangement uses the stop piece according to the invention very beneficial and is simple itself built up so that clamping pieces of this type in large Quantity produced cheaply and on the chain links the link chain can be attached.
  • the requirements to the stop of the dimensionally stable, rigid training and the use of a stainless steel are realized with very little effort, so that Overall clamping piece without hesitation even when packing of food can be used.
  • the width of the cold groove on the lead screw is at least equal to the thickness of the base plate, preferably but is at least slightly larger than this, and if necessary, the retaining groove on the lead screw is provided so that at the first bracket adjacent clamping piece the stop piece from the second Bearing bracket is at least slightly spaced.
  • the invention is always applicable to advantage when on Clamping pieces of the type described very high prestressing forces the helical compression spring must be mastered; however, it is by no means limited to this.
  • the stop piece according to the invention is generally as a lock a spring end of such a helical compression spring on a lead screw or the like.
  • 1 and 2 is one for driving a packaging film web suitable link chain GK in the area a sprocket mounted on a fixed shaft W.
  • KR which is composed of chain links KG is.
  • the clamping piece S consists of one the associated chain link KG attachable, for example riveted bracket 1, a lead screw 2, a helical compression spring 3 and one on the lead screw 2 attached stop piece 4.
  • the U-shaped in the front view of FIG. 3, from a Sheet metal folded bracket 1 is made in one piece from one on the chain link KG adjacent bracket 11 and two bent from the retaining tab 11 at a distance a parallel bearing plates 12a, 12b assembled, the for storing the axially limited movable lead screw 2 serve.
  • a pressure pin 21 on the lead screw 2 there is a pressure pin 21 on the lead screw 2 and on the other hand, a clamping piece 22 is formed in a mushroom shape. While the clamp 22 under the load of the Leading screw 2 overlapping helical compression spring 3 a first bearing bracket 12a is present when the associated one Chain link KG outside the area of Sprocket KR is located, it can be removed from the bracket 12a be lifted off when the chain link KG is in this Area is pulled. As can easily be seen in Fig.
  • the pressure pin 21 comes into the effective range one integrally formed on the sprocket KR Ringsattels RS and is in this effective range against the Spring force of the helical compression spring 3 increased: for example can now be an exciting packaging film web between the clamping piece 22 and the bearing bracket 12a introduced and when the chain link KG the area the sprocket KR has left again, excited become; similar runs on another sprocket Removing the packaging film web from the clamping pieces S from.
  • the pressure pin 21 is adjacent and near the bearing bracket 12b - a retaining groove 23 recessed, in which the stop piece 4 axially locked in place.
  • the helical compression spring 3 is between the bearing bracket 12a and the stop piece 4 clamped with high preload.
  • the Holding groove 23 is by the diameter g of its bottom 23a and their depth t are determined.
  • the section of Figure 4 shows how the stop piece 4 is inserted into the holding groove 23.
  • the stop piece 4 is in one piece from an annular Base plate 41 and a collar 42 assembled.
  • the ring-cylindrical folded out of the base plate 41 Collar 42 of height h surrounds the movable end of the spring 31 of the helical compression spring 3, the other end of the spring 32 rests on the bearing bracket 12a.
  • the details of the stop piece 4 are in the Fig.5 shown.
  • An (inner) edge 43a of a central, the diameter g of the bottom 23a of the holding groove 23 adapted opening 43 is through an insertion slot 44 with the (outer) edge 41a of the base plate 41 connected and otherwise semicircular, the width b of the insertion slot 44 is so dimensioned is that the stopper 4 convenient, but without a lot of play can be inserted into the holding groove 23 can.
  • the assembly of the stop piece 4 is facilitated if the collar 42 is symmetrical to the insertion slot 44, set back on both sides, ends.
  • the so formed recess 42a of the collar 42 has one here Width k, which is slightly larger than the diameter f the lead screw 2, so that jamming during assembly is avoided.
  • the stop piece 4 because of the flanged collar 42 extremely dimensionally stable. It is assembled in Condition because of the on the base plate 41 and of the collar 42 bordered spring end 31 securely in held in situ.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Basic Packing Technique (AREA)
  • Wire Bonding (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Adornments (AREA)
  • Unwinding Webs (AREA)

Claims (8)

  1. Tendeur (S), en particulier pour machines d'emballage, comportant une bride d'appui (12), une broche de guidage (2) montée dans la bride d'appui (12) et comportant une pièce de pincement (22) fixée à cette broche, un ressort hélicoïdal de compression (3) enveloppant la broche de guidage (2), et une pièce de butée (4) pour le ressort hélicoïdal de compression (3), la pièce de butée (4) étant disposée axialement dans une rainure de maintien (23) radiale, concentrique à la broche de guidage (2),
       caractérisé en ce que
    (a) la pièce de butée (4) est constituée d'une plaque de base (41), plate et de forme annulaire, et d'une collerette (42) en forme d'anneau cylindrique disposée sur le bord extérieur (41a) de la pièce de butée (41) en direction de l'extrémité du ressort (31) et enveloppant au moins pratiquement toute l'extrémité (31) du ressort,
    (b) en ce que le bord intérieur (43a) de la plaque de base (41), en contact avec le fond (23a) de la rainure de maintien (23), est relié par une fente d'introduction (44) au bord extérieur (41a), la largeur (b) de la fente d'introduction (44) étant ajustée au diamètre (g) au fond (23a) de la rainure de maintien (23) et ayant une dimension telle que la pièce de butée (4) peut coulisser sans coincement sur le fond (23a) de la rainure de maintien (23), et en ce que la collerette (42) est interrompue parallèlement et symétriquement à la fente d'introduction (44) par un évidement (42a) dont la largeur (k) est au moins égale au diamètre (f) de la broche de guidage (2) ou, de préférence, est un peu plus grande que lui.
  2. Tendeur suivant la revendication 1, caractérisé en ce que la collerette (42) est formée par un moulurage sur le bord extérieur (41a) de la plaque de base (41).
  3. Tendeur suivant la revendication 1 ou la revendication 2, caractérisé en ce qu'il est constitué d'un matériau inoxydable et indifférent physiologiquement aux produits alimentaires, de préférence de l'acier.
  4. Tendeur suivant l'une des revendication 1 à 3, caractérisé en ce que sa résistance à la déformation, déterminée par le dimensionnement et la matière, est choisie de telle façon qu'une déformation, élastique ou permanente, soit supprimée sous l'influence permanente du ressort hélicoïdal de compression (3).
  5. Tendeur suivant l'une des revendication 1 à 4, caractérisé en ce que ce tendeur est prévu sur un maillon (KG) d'une chaíne de transport, réalisée sous la forme d'une chaíne à maillons (GK).
  6. Tendeur suivant la revendication 5, caractérisé en ce que la broche de guidage (2) est montée mobile axialement, transversalement à la direction de déplacement, sur un support d'appui (1) en forme de U constitué d'une patte de maintien (11) fixée au maillon de chaíne (KG) et de deux pattes d'appui (12a, 12b), le ressort hélicoïdal de compression (3) venant en butée, en dehors de la pièce de butée (4), également contre la patte d'appui (12a) sur laquelle la pièce de pincement (22) d'une seule pièce avec la broche de guidage (2), de la feuille d'emballage, repose extérieurement, sous l'effet du ressort hélicoïdal de compression (3), et peut être soulevée à l'encontre de l'effet du ressort hélicoïdal de compression (3), lorsque la broche de guidage (2) est soumise à l'action d'un goujon de pression (21) en prolongement axial guidé au travers de l'autre patte d'appui (12b) et en saillie par rapport à celle-ci, par exemple par une surface d'appui annulaire (RS) d'une roue dentée (KR) de la chaíne à maillons (GK).
  7. Tendeur suivant l'une des revendications 1 à 6, caractérisé en ce que la largeur (r) de la rainure de maintien (23) est au moins égale à l'épaisseur (d) de la plaque de base (41), mais, de préférence, est au moins un peu plus grande qu'elle.
  8. Tendeur suivant l'une des revendications 5 à 7, caractérisé en ce que la rainure de maintien (23) est prévue sur la broche de guidage (2) de telle façon que, quand la pièce de pincement repose contre la première patte d'appui (12a), la pièce de butée (4) soit écartée, au moins faiblement, de la deuxième patte d'appui (12b).
EP96106417A 1995-07-13 1996-04-24 Mâchoire de serrage Expired - Lifetime EP0753460B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19525523 1995-07-13
DE19525523A DE19525523A1 (de) 1995-07-13 1995-07-13 Anschlagstück

Publications (2)

Publication Number Publication Date
EP0753460A1 EP0753460A1 (fr) 1997-01-15
EP0753460B1 true EP0753460B1 (fr) 1999-02-03

Family

ID=7766726

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106417A Expired - Lifetime EP0753460B1 (fr) 1995-07-13 1996-04-24 Mâchoire de serrage

Country Status (6)

Country Link
US (1) US5702044A (fr)
EP (1) EP0753460B1 (fr)
AT (1) ATE176433T1 (fr)
DE (2) DE19525523A1 (fr)
DK (1) DK0753460T3 (fr)
ES (1) ES2128805T3 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251740A1 (de) 2002-11-05 2004-05-13 Convenience Food Systems Wallau Gmbh & Co. Kg Spannstück einer Transportkette für eine Folienbahn
DE202004021005U1 (de) * 2004-04-05 2006-07-06 Schmezer, Alexander Drucksteife Antriebskette für eine Stellvorrichtung
DE202006008577U1 (de) * 2006-05-30 2007-10-11 JOH. WINKLHOFER & SÖHNE GMBH & Co. KG Förderkette mit Greifstößelführung
DE202006008576U1 (de) * 2006-05-30 2007-10-04 Joh. Winklhofer & Söhne GmbH und Co KG Förderkette mit aufklappbarem Greifkopf
DE202006008575U1 (de) * 2006-05-30 2007-10-25 Joh. Winklhofer & Söhne GmbH und Co KG Förderkette mit schwenkbarem Greifkopf
DE102006036617A1 (de) * 2006-08-04 2008-02-14 JOH. WINKLHOFER & SÖHNE GMBH & Co. KG Förderkette mit separatem umlaufenden Klemmelement
EP2740677A1 (fr) * 2012-12-10 2014-06-11 Multivac Sepp Haggenmüller GmbH & Co. KG Installation de transport pour machine d'emballage par emboutissage
WO2016094405A1 (fr) * 2014-12-08 2016-06-16 EVO Development, LLC Systèmes et procédés d'élimination de rebuts de thermoformage
DE102016214431A1 (de) * 2016-08-04 2018-02-08 Multivac Sepp Haggenmüller Se & Co. Kg Tiefziehverpackungsmaschine mit Halteleiste
EP3456642B1 (fr) * 2017-09-15 2023-11-01 Tetra Laval Holdings & Finance S.A. Dispositif de tension pour un système de mâchoire entraîné par chaîne
US11691771B1 (en) * 2022-03-02 2023-07-04 Moshe Epstein Hygienic conveying chain clamp used in a horizontal form fill and seal packaging machine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US969295A (en) * 1909-09-23 1910-09-06 Philip Jacob Meahl Paper-feed mechanism.
US1460538A (en) * 1921-08-20 1923-07-03 Lucian F Easton Locking device for motor valves
US2237877A (en) * 1939-05-05 1941-04-08 James B Fulk Method and apparatus for feeding paper
US3536184A (en) * 1965-12-27 1970-10-27 Morrell & Co John Vacuum packaging apparatus
DE2355921C3 (de) * 1973-11-08 1979-08-23 Hermann Waldner Gmbh & Co, 7988 Wangen Materialbahn-Fördereinrichtung
DE2430497B2 (de) * 1974-06-25 1981-05-21 Krämer & Grebe GmbH & Co KG Maschinen- und Modellfabrik, 3560 Biedenkopf Vorrichtung für die Verpackung von Ware
US4113397A (en) * 1975-10-17 1978-09-12 Snyder Francis H Pinless resilient coupling
DE3022065C3 (de) * 1980-06-12 1987-01-02 Multivac Sepp Haggenmüller KG, 8941 Wolfertschwenden Transporteinrichtung
DE3315419A1 (de) * 1983-04-28 1984-10-31 Multivac Sepp Haggenmüller KG, 8941 Wolfertschwenden Transporteinrichtung zum fuehren einer materialbahn in einer verpackungsmaschine
US4826065A (en) * 1983-04-28 1989-05-02 Multivac Sepp Haggenmuller Kg Feeding means for feeding a machine web in a packaging machine
US5364201A (en) * 1993-02-08 1994-11-15 Norco, Inc. Hinged strut construction

Also Published As

Publication number Publication date
US5702044A (en) 1997-12-30
ATE176433T1 (de) 1999-02-15
EP0753460A1 (fr) 1997-01-15
DK0753460T3 (da) 1999-09-20
DE19525523A1 (de) 1997-01-16
DE59601250D1 (de) 1999-03-18
ES2128805T3 (es) 1999-05-16

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