EP0999161B1 - Dispositif pour compenser le mouvement d'avance d'une bande de film - Google Patents

Dispositif pour compenser le mouvement d'avance d'une bande de film Download PDF

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Publication number
EP0999161B1
EP0999161B1 EP99120773A EP99120773A EP0999161B1 EP 0999161 B1 EP0999161 B1 EP 0999161B1 EP 99120773 A EP99120773 A EP 99120773A EP 99120773 A EP99120773 A EP 99120773A EP 0999161 B1 EP0999161 B1 EP 0999161B1
Authority
EP
European Patent Office
Prior art keywords
rockers
rocker
group
deflection rollers
arms
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
EP99120773A
Other languages
German (de)
English (en)
Other versions
EP0999161A1 (fr
Inventor
Franz Bochtler
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.)
GUENTER KUNSTSTOFFMASCHINEN GmbH
Original Assignee
GUENTER KUNSTSTOFFMASCHINEN GmbH
GUENTER KUNSTSTOFFMASCHINEN GM
Guenter Kunststoffmaschinen 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 GUENTER KUNSTSTOFFMASCHINEN GmbH, GUENTER KUNSTSTOFFMASCHINEN GM, Guenter Kunststoffmaschinen GmbH filed Critical GUENTER KUNSTSTOFFMASCHINEN GmbH
Publication of EP0999161A1 publication Critical patent/EP0999161A1/fr
Application granted granted Critical
Publication of EP0999161B1 publication Critical patent/EP0999161B1/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
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
    • B65H23/1955—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/048—Registering, tensioning, smoothing or guiding webs longitudinally by positively actuated movable bars or rollers

Definitions

  • the invention relates to a device for compensating Feed movement of a film web on or in machines, especially for processing plastic films for the Production of bags, sacks and the like, according to the Preamble of the first claim.
  • EP 0 510 251 A1 and US 3,540,641 describe a generic device in which two rockers are arranged so as to be pivotable with respect to one another.
  • the swivel axes are located at opposite ends of the rockers.
  • the free ends of the wings are also arranged opposite one another. If a free end of a first rocker moves away from the second rocker, the opposite end of the second rocker moves away from it by the same amount parallel to the first rocker.
  • the two wings are always parallelogram-like. When closed, both wings are aligned horizontally.
  • the same amount of movement of both rockers is ensured, for example, by a chain that leads from the pivot bearing of one rocker to the pivot bearing of the other rocker over the entire length of the rockers.
  • the invention has for its object to develop a device to compensate for the movement of a film web, which has a simple construction, works reliably even with large take-off paths and short cycle times, ensures an almost constant web tension and thus guarantees a trouble-free process flow. This object is achieved with the features of the first claim.
  • the device for compensating the feed movement of the film web which is guided in loops between a first group and a second group of deflecting rollers, has, as is known, a first group of deflecting rollers, which is arranged on a first rocker movable in the direction of the second group of deflecting rollers ,
  • the second group of deflecting rollers are also arranged on a second rocker arm, which moves in the direction of the first rocker arm when the film web is advanced.
  • the rockers are mounted such that they are V-shaped to each other from an initial position in which they are arranged at an opening angle greater than zero, to an end position in which they are essentially parallel to one another and the opening angle is zero, and vice versa symmetrically symmetrical are pivotable relative to one another, the free ends of the two rockers pointing in the same direction in a position parallel to one another.
  • each rocker only has to travel half the distance to pull off a certain length of film (feed).
  • the first rocker is mounted about a first pivot axis and the second rocker about a second pivot axis, which are parallel to each other.
  • the rockers are coupled to one another via corresponding elements such as intermeshing gear wheels. Both rockers are returned to the spaced-apart starting position via retraction elements.
  • Each rocker arm consists of parallel arms, between which the deflection rollers are mounted. Each arm is pivotally supported by a bearing.
  • the two bearings of the first rocker are arranged on a first shaft and the two bearings of the second rocker are arranged on a second shaft.
  • the deflecting rollers of the first rocker and the deflecting rollers of the second rocker are preferably arranged offset from one another.
  • the pivot axes are advantageously placed so that the arms of the rockers point towards the ground in the manner of a hanging arrangement.
  • the weight of the swingarms is relieving and therefore beneficial when starting the film web.
  • a standing swing arm (bearings are arranged in the direction of the floor and the arms point upwards) is more favorable for driving on, since the weight of the swing arms also tightens the film web.
  • the new double swing arm makes it easy elegant way to travel for every swingarm halved and thus the risk of undesirable Swinging up with long trigger lengths and short ones Cycle times significantly reduced. It will be almost generated constant web tension, thus the Manufacturing accuracy increased and tearing of the film web reliably avoided.
  • Another advantage of the invention is that the two swiveling swing foil storage with one longer trigger lengths are possible.
  • the first rocker 1 shows the basic illustration of a standing double rocker in the starting position, which consists of a first rocker 1 and a second rocker 2.
  • the first rocker 1 has two mutually parallel arms 3 and 4. Each arm 3, 4 is supported at one end on a shaft 5. At the two ends of the shaft 5 bearings 6 and 7 are provided, around which the first rocker can be rotated. Between the arms 3 and 4 of the first rocker 1, several deflecting rollers 8 are received.
  • the second rocker arm 2 is constructed from arms 3 'and 4' which are parallel to one another, a shaft 5 'with bearings 6' and 7 'and deflecting rollers 8'.
  • the shafts 5 and 5 ' are attached to the machine frame, not shown, via flanges 9 and 9'.
  • Retractable elements 10 and 10 ' are also fastened to the machine frame on the two arms 3 and 4 and on the arms 3' and 4 ', by means of which the rockers 1 and 2 are returned to the starting position.
  • Interlocking gears are provided in this illustration between the shafts 5 and 5 'which are arranged at a short distance from one another.
  • the double rocker is in side view from a roll 11 starting from inserted film web 12 in the Starting position A with open and in end position B shown with closed wings 1 and 2.
  • the mode of action is as follows: From the roll 11, the film web 12 is inserted in loops between the deflection rollers 8 and 8 'of the rockers 1 and 2. In the starting position, the rockers 1 and 2 are in the open state (mutually V-shaped position) and form an opening angle ⁇ with their arms 3/4 and 3 '/ 4'. If the film web 12 is pulled off in the direction of the arrow, the rockers 1, 2 move symmetrically toward one another counter to the restoring force of the restoring elements 10, 10 ′ arranged on the machine frame 13, up to an essentially parallel position (opening angle approx. 0 °) into the end position. The symmetrical positive run is realized via the gears, not shown, between the shafts 5 and 5 '.
  • the peelable film length is determined by the difference in length of the film stored in the device in the starting position and in the end position.

Landscapes

  • Advancing Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (10)

  1. Mécanisme pour compenser le mouvement d'avancement d'un lé de feuille guidé en boucle entre un premier groupe de rouleaux de renvoi (8) et un deuxième groupe de rouleaux de renvoi (8'), dans lequel le premier groupe de rouleaux de renvoi (8) est disposé sur une première bascule (1) et le deuxième groupe de rouleaux de renvoi (8') sur une deuxième bascule (2) et les deux bascules (1, 2) présentent des bras (3, 4, 3', 4') parallèles l'un à l'autre et peuvent basculer l'une par rapport à l'autre, caractérisé en ce que les bascules (1, 2) peuvent pivoter de façon symétrique en miroir l'une par rapport à l'autre,
    à partir d'une position ouverte, dans laquelle les bascules (1, 2) sont disposées en forme de V l'une par rapport à d'autres selon un angle d'ouverture (α > 0),
    vers une position fermée dans laquelle les bascules (1, 2) se trouvent sensiblement parallèles l'une un autre et l'angle d'ouverture (α) est approximativement nul,
    et vice versa,
    les extrémités libres des bascules étant orientées dans la même direction lorsqu'elles sont en position fermée.
  2. Mécanisme selon la revendication 1, caractérisé en ce que les deux bascules (1, 2) sont supportées autour d'un axe de pivotement commun
       ou
       en ce que les axes de pivotement des bascules (1, 2) sont disposés à peu de distance l'un de l'autre.
  3. Mécanisme selon la revendication 1 ou 2, caractérisé en ce que les bascules (1, 2) sont supportées sur un arbre commun ou sur des arbres (5, 5') disposés à peu de distance l'un de l'autre.
  4. Mécanisme selon l'une ou l'ensemble de revendications 1 à 3, caractérisé en ce que les axes de pivotement sont disposés de telle sorte que les bras (3, 4, 3', 4') des bascules (1, 2) sont orientés vers le sol à la manière d'un mécanisme suspendu.
  5. Mécanisme selon l'une ou l'ensemble des revendications 1 à 3, caractérisé en ce que les axes de pivotement sont disposés tels sorte que les bras (3, 4, 3', 4') des bascules (1, 2) sont orientés vers le haut à la manière d'un mécanisme posé.
  6. Mécanisme selon l'une ou l'ensemble des revendications 1 à 5, caractérisé en ce que la première bascule (1) et la deuxième bascule (2) sont directement couplées par au moins un élément qui garantit un mouvement symétrique en miroir des deux bascules (1, 2) l'une par rapport à l'autre.
  7. Mécanisme selon la revendication 4, caractérisé en ce que l'élément prend la forme de roues dentées engrenées les unes avec les autres.
  8. Mécanisme selon l'une ou l'ensemble des revendications 1 à 7, caractérisé en ce que chaque bascule (1, 2) présente au moins un élément de rappel (10) qui garantit son retour dans sa position de départ.
  9. Mécanisme selon la revendication 8, caractérisé en ce que l'élément de rappel (10) est conçu comme un ressort, un vérin hydraulique ou un vérin pneumatique.
  10. Mécanisme selon la revendication 8 ou 9, caractérisé en ce que l'élément de rappel (10) est fixé d'un côté à un bras (3, 4, 3', 4') de chacune des bascules (1, 2) et de l'autre côté au bâti (13).
EP99120773A 1998-10-21 1999-10-20 Dispositif pour compenser le mouvement d'avance d'une bande de film Expired - Lifetime EP0999161B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19848519 1998-10-21
DE19848519A DE19848519A1 (de) 1998-10-21 1998-10-21 Vorrichtung zum Ausgleich der Vorschubbewegung einer Folienbahn

Publications (2)

Publication Number Publication Date
EP0999161A1 EP0999161A1 (fr) 2000-05-10
EP0999161B1 true EP0999161B1 (fr) 2003-05-02

Family

ID=7885181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99120773A Expired - Lifetime EP0999161B1 (fr) 1998-10-21 1999-10-20 Dispositif pour compenser le mouvement d'avance d'une bande de film

Country Status (4)

Country Link
EP (1) EP0999161B1 (fr)
AT (1) ATE238956T1 (fr)
DE (2) DE19848519A1 (fr)
ES (1) ES2199512T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2186483B1 (es) * 2000-09-12 2004-03-16 Torres Martinez M Empalmador de bandas con union oblicua.
JP5622549B2 (ja) * 2010-12-10 2014-11-12 株式会社リブドゥコーポレーション 吸収性物品の製造システム
CN104495444B (zh) * 2014-12-12 2017-01-04 北京航天斯达科技有限公司 一种卷绕物间歇供给装置
EP3385203B1 (fr) * 2017-04-07 2020-07-08 Mespack, S.L. Dispositif de compensation de mouvement de bande pelliculaire pour une compensation de mouvement de bande pelliculaire entre une section de mouvement vers l'avant continu et une section de mouvement vers l'avant intermittent
CN116443640B (zh) * 2023-06-15 2023-09-05 苏州江天包装科技股份有限公司 逐级分解式印刷制品的在线张力调节系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3024957A (en) * 1959-01-05 1962-03-13 Cons Electrodynamics Corp Tape apparatus
US3540641A (en) * 1968-11-21 1970-11-17 Celanese Corp Web accumulator
CA2052180A1 (fr) * 1991-04-24 1992-10-25 Thomas C. Meyer Accumulateur hydraulique en toile a bras opposes
DE4241353C2 (de) * 1992-11-11 1996-10-02 Kisters Maschinenbau Gmbh Tänzer für eine bahnförmiges Material verarbeitende Maschine
JP2000500423A (ja) * 1995-11-17 2000-01-18 エフエムシー・コーポレーション ウエブ速度制御装置及び制御方法

Also Published As

Publication number Publication date
ATE238956T1 (de) 2003-05-15
DE19848519A1 (de) 2000-05-04
EP0999161A1 (fr) 2000-05-10
ES2199512T3 (es) 2004-02-16
DE59905306D1 (de) 2003-06-05

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