EP1516718B1 - Station pour l'ouverture de fonds de sac dans une machine pour la fabrication de sacs en papier - Google Patents

Station pour l'ouverture de fonds de sac dans une machine pour la fabrication de sacs en papier Download PDF

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Publication number
EP1516718B1
EP1516718B1 EP04021274A EP04021274A EP1516718B1 EP 1516718 B1 EP1516718 B1 EP 1516718B1 EP 04021274 A EP04021274 A EP 04021274A EP 04021274 A EP04021274 A EP 04021274A EP 1516718 B1 EP1516718 B1 EP 1516718B1
Authority
EP
European Patent Office
Prior art keywords
force
bottom opening
gripper
cylinder
cams
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.)
Not-in-force
Application number
EP04021274A
Other languages
German (de)
English (en)
Other versions
EP1516718A3 (fr
EP1516718A2 (fr
Inventor
Thomas Bozic
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher 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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP1516718A2 publication Critical patent/EP1516718A2/fr
Publication of EP1516718A3 publication Critical patent/EP1516718A3/fr
Application granted granted Critical
Publication of EP1516718B1 publication Critical patent/EP1516718B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/022—Holders for feeding or positioning sheets or webs
    • B31B70/024—Rotating holders, e.g. star wheels, drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B31B2150/0012—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing in the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/76—Opening and distending flattened articles
    • B31B50/78—Mechanically

Definitions

  • the invention relates to a bottom opening station of a paper bag machine according to the preamble of claim 1.
  • Paper bag machines have long been known. For example, the shows DE 197 02 144 A1 Elements of such devices.
  • the Patent DE 1 080 846 shows a bottoming cylinder of such a paper bag machine.
  • On a bottom maker cylinder the impacts of a previously drawn-up end of a paper tube are wrapped and glued together to form the bottom of a paper bag.
  • To put the soil serve gripper fingers, which are moved in both the axial and in the tangential direction of the Bodenmacherzylinders relative to this. In order to move the gripper fingers in motion, they are partially acted upon by forces that are provided by control cams.
  • FIG. 17 61 992 C3 Another element of such a paper bag machine is in the Patent DE 17 61 992 C3 shown.
  • the so-called handle unit presented there serves to attach carrying handles to an already finished paper bag.
  • a paper strip is fixed by a gripper on a cylinder, pre-broken, folded, provided with glue and finally glued to the bag.
  • the gripper is acted upon by a spring provided by a spring in such a way that the paper strip is constantly held by the gripper on the cylinder surface.
  • the gripper is raised by means of a control cam and lowered again for the purpose of gripping a new paper strip.
  • the publication DE 41 15 161 A1 shows a section of a Bodenmacherzylinders such machine.
  • This floor cylinder is the central component of every bag machine.
  • soil formation is carried out on this cylinder.
  • the pieces of tubing which have been previously isolated, are first passed to the bottom opening station or the bottom opening cylinder. There they are arrested by various measures. These measures often include applying the hose pieces with vacuum to this cylinder.
  • grabbers play a role.
  • the pieces of hose are known to be conveyed in these bag machines in the direction of the tube axis of symmetry.
  • grippers are used in addition to the aforementioned vacuum fastening means.
  • two grippers are usually used, whereby the use of one or even more grippers seems possible.
  • Both gripping mechanisms, vacuum and gripper are often used in addition to each other.
  • the gripper is subjected to a force which makes it accessible, that is to say that the gripper must be actively acted on during the entire time of the access. This power is usually provided by a curve package. The time during which the bag or piece of tubing from which the bag will be formed must be held by the gripper or the two grippers depends on the desired size of the floor to be formed.
  • the object of the present invention is therefore to provide a bottom opening station for bag machines, which manages with a change in the desired bag length without tedious adjustments and without the storage of cam packages.
  • the gripper is initially influenced during its entire revolution by a force acting in the direction of the axis of the gripper cylinder. Only when the gripper is opened, this first force counteracts a second force that opens the gripper.
  • the first force is provided by a spring element, a magnetic force or another force applying device.
  • the second force will usually be provided by two cam packages, the position of these two cam packages is variable in the circumferential direction. Due to this variability of the relative position of the two cam packages, it is advantageously possible to adapt the opening times of the gripper to the desired bag length.
  • FIG. 1 shows a view in the radial direction on a section of a floor opening station according to the invention.
  • This section shows the bottom opening cylinder 1, which comprises a shaft 2.
  • This shaft 2 is mounted in the machine frame, not shown, and is driven.
  • a support cylinder 3 is applied, on which the hose piece 4 is guided and held by the gripper finger 5.
  • the gripper finger 5 is connected to a plunger 6.
  • This plunger 6 is mounted in holes in the support cylinder 3 such that it is rotatable and axially displaceable.
  • the compression spring 7 acts on the plunger 6 with a force such that the gripper finger 5 always presses in the axial direction against the part of the support cylinder 3 leading the hose piece 4. From the Fig.
  • a tension spring 8 exerts on the lever 9 in the direction of the shaft 2 a substantially radially acting force.
  • the gripper finger 5, which is fastened to the lever 9, thus presses the hose piece 4 in the radial direction on the part of the support cylinder 3 leading the hose piece 4.
  • the floor opening cylinder 1 rotates in the direction of the arrow A.
  • control cams which act on the plunger 6 and on the lever 9 in the manner described below:
  • One of the axial control cams 10, 12 acts on the contact strip 14 and thus gives the plunger 6 a force. This force is directed and greater than that of the compression spring 7, so that ultimately the gripper finger 5 is removed in the axial direction of the hose piece 4.
  • one of the two radial control cams 11, 13 acts on a non-visible contact piece, which is attached to the lever 9.
  • the applied by the radial cam 11 force counteracts the tension spring 8 and causes an additional lifting of the gripper finger 5 in the radial direction.
  • the gripper finger 5 is now in a so-called open position.
  • the cams 10, 11, 12, 13 are fixed to a support unit 15, which in turn is connected to the machine frame.
  • a support bearing 16 is provided between these two elements.
  • the cams 10, 11 in the direction of the double arrow B are displaced.
  • the cams 10, 11 in a manner not shown connected to the carrier unit 15 quickly releasably.
  • This gripper finger 1 is mounted on a plunger 6, which in turn is acted upon by compression spring 7 of the hose piece 4 leading part of the support cylinder 3 with such a force that the gripper fingers. 5 is in a position remote from the hose piece 4.
  • the fixing of the hose piece 4 takes place with the aid of the axial control cam 10 and the radial control cam 11.
  • the control cam 11 imparts a force in the radial direction, so that the plunger 6 is rotated and the gripper finger 5 is thereby lifted.
  • the control cam 10 gives the gripper finger 5 a force so that it against the force of the compression spring 7 in the direction of the hose piece 4 leading part of the support cylinder 3.

Landscapes

  • Supplying Of Containers To The Packaging Station (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Claims (6)

  1. Station pour l'ouverture des fonds (1) d'une machine de fabrication de sacs en papier,
    • qui comprend un cylindre d'ouverture de fond (2),
    • qui présente au moins une griffe (5),
    • qui (5) saisit et arrête un tronçon de sac (4)
    • et qui (5) confère, ce faisant, au tronçon de sac (4) une force en direction de l'axe de rotation du cylindre d'ouverture de fonds (1),
    • où la force nécessaire pour arrêter à chaque fois un tronçon de sac (4) est appliquée en direction du tronçon de sac (4) et en direction de l'axe de rotation du cylindre d'ouverture de fond (1) par un premier moyen de mise à disposition de force (7, 8) qui met à disposition cette force pendant toute la rotation du cylindre d'ouverture de fond (1) et
    • où un deuxième moyen de mise à disposition de force (10-13) est prévu,
    • qui confère à au moins une griffe (5) une force
    • qui s'oppose à la force du premier moyen de mise à disposition de force (7, 8) et ouvre la griffe (5),
    caractérisée en ce que
    les deuxièmes moyens de mise à disposition de force comprennent au moins deux paquets de cames (10-13), où la position relative de ces deux paquets de cames (10,13) est modifiable dans la direction périphérique (ϕ) du cylindre d'ouverture de fond (1).
  2. Station pour l'ouverture de fonds (1) selon la revendication 1,
    caractérisée en ce que les premiers moyens de mise à disposition de force (10, 13) comprennent au moins un élément de ressort (7, 8).
  3. Station pour l'ouverture de fonds (1) selon l'une des revendications précédentes, caractérisée en ce que chaque paquet de cames (10, 13) comprend au moins deux cames de commande (10-13).
  4. Station pour l'ouverture de fonds (1) selon la revendication précédente, caractérisée en ce que peut être conférée à au moins une griffe (5) par la première came de commande (10, 12) de chaque paquet de cames une force qui, dans la direction axiale du cylindre d'ouverture de fond (1), est dirigée au loin du tronçon de sac (4).
  5. Station pour l'ouverture de fond (1) selon l'une des deux revendications précédentes, caractérisée en ce que peut être conféré à au moins une griffe (5) par la deuxième came de commande (11, 13) de chaque paquet de cames une force qui, dans la direction radiale, est dirigée au loin de l'axe de rotation du cylindre d'ouverture de fond (1).
  6. Procédé d'ouverture de la griffe (5) d'une station pour l'ouverture de fonds (1),
    • où est utilisée une station pour l'ouverture de fonds (1) selon l'une des revendications précédentes,
    • où les premiers moyens de mise à disposition de force (7, 8) mettent à disposition une première force qui agit pendant toute la rotation du cylindre d'ouverture de fonds sur la griffe (5), et
    • où les deuxièmes moyens de mise à disposition de force (10-13) pour l'ouverture de la griffe (5) mettent à disposition une deuxième force qui s'oppose à la première force, caractérisée en ce que les deuxièmes moyens de mise à disposition de force (10-13) mettent à disposition la deuxième force deux fois pour une rotation du cylindre d'ouverture de fond (1).
EP04021274A 2003-09-22 2004-09-08 Station pour l'ouverture de fonds de sac dans une machine pour la fabrication de sacs en papier Not-in-force EP1516718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10344156A DE10344156B4 (de) 2003-09-22 2003-09-22 Bodenöffnungsstation einer Papierbeutelmaschine
DE10344156 2003-09-22

Publications (3)

Publication Number Publication Date
EP1516718A2 EP1516718A2 (fr) 2005-03-23
EP1516718A3 EP1516718A3 (fr) 2006-09-13
EP1516718B1 true EP1516718B1 (fr) 2008-02-27

Family

ID=34177913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04021274A Not-in-force EP1516718B1 (fr) 2003-09-22 2004-09-08 Station pour l'ouverture de fonds de sac dans une machine pour la fabrication de sacs en papier

Country Status (3)

Country Link
EP (1) EP1516718B1 (fr)
AT (1) ATE387307T1 (fr)
DE (2) DE10344156B4 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8764618B2 (en) * 2011-01-27 2014-07-01 Duro Bag Manufacturing Company Clampless bar mechanism for a paper bag bottoming mechanism
CN106881908B (zh) * 2017-03-22 2022-09-16 浙江正博智能机械有限公司 一种纸张的运动转角装置
CN107225801B (zh) * 2017-08-02 2023-06-02 江苏方邦机械有限公司 一种纸袋机合底装置及纸袋机
CN109397745A (zh) * 2018-12-11 2019-03-01 天津市津东华明纸箱厂 一种纸箱弯折成型机构

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB327643A (en) * 1929-06-24 1930-04-10 Alfred Clement Coty Improvements in and relating to paper bag bottomers
US2044476A (en) * 1934-04-27 1936-06-16 Benjamin C Betner Company Apparatus for making bags
US2123508A (en) * 1937-03-15 1938-07-12 Benjamin C Betner Company Bag machine
DE1611699C2 (de) * 1967-08-25 1975-11-20 Windmoeller & Hoelscher, 4540 Lengerich Vorrichtung zum Herstellen der Böden in einer Klotzbodenbeutelmaschine
DE4115161A1 (de) * 1991-05-08 1992-11-12 Windmoeller & Hoelscher Verfahren und vorrichtung zur herstellung von papiertragetaschen
DE19702144C2 (de) * 1997-01-22 2003-03-13 Windmoeller & Hoelscher Verfahren und Vorrichtung zum Herstellen von Beuteln mit Henkelgriffen

Also Published As

Publication number Publication date
DE502004006303D1 (de) 2008-04-10
DE10344156A1 (de) 2005-04-28
ATE387307T1 (de) 2008-03-15
EP1516718A3 (fr) 2006-09-13
EP1516718A2 (fr) 2005-03-23
DE10344156B4 (de) 2008-02-07

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