EP1516718B1 - Bottom opening station in a paper bag apparatus - Google Patents
Bottom opening station in a paper bag apparatus Download PDFInfo
- 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.)
- Expired - Lifetime
Links
- 238000004806 packaging method and process Methods 0.000 abstract 2
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000004181 pedogenesis Methods 0.000 description 1
Images
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)
Abstract
Description
Die Erfindung betrifft eine Bodenöffnungsstation einer Papierbeutelmaschine nach dem Oberbegriff des Anspruchs 1.
Papierbeutelmaschinen sind seit langem bekannt. Beispielsweise zeigt die
Paper bag machines have long been known. For example, the shows
Ein weiteres Element einer solchen Papierbeutelmaschine wird in der
Die Druckschrift
Die Aufgabe der vorliegenden Erfindung ist es daher, eine Bodenöffnungsstation für Beutelmaschinen zu schaffen, welche bei einer Änderung der gewünschten Beutellänge ohne langwierige Einstellarbeiten und ohne die Bevorratung von Kurvenpaketen auskommt.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.
Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Zum Verständnis des Anspruchs 1 ist es wichtig zu verstehen, dass nach dem Stand der Technik die zur Arretierung eines Beutelabschnitts notwendige Kraft vor allem in Richtung auf die Drehachse des Bodenöffnungszylinders wirkt. Der Beutelabschnitt wird also gegen den Zylinder gedrückt. Die Länge dieser Kraftbereitstellung ist bei dem Stand der Technik, wie erwähnt, von der Länge des Kurvenpaketes abhängig. Ist das Kurvenpaket passiert, verebbt die arretierende Kraft und der Greifer öffnet sich.This object is solved by the characterizing features of
Bei der vorliegenden Erfindung wird der Greifer während seiner ganzen Umdrehung zunächst von einer in Richtung auf die Achse des Greiferzylinders wirkenden Kraft beeinflusst. Lediglich wenn der Greifer geöffnet wird, wirkt dieser ersten Kraft eine zweite Kraft entgegen, die den Greifer öffnet. Vorteilhafterweise wird die erste Kraft von einem Federelement, einer magnetischen Kraft oder einer anderen Kraft aufbringenden Vorrichtung bereit gestellt.In the present invention, 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. Advantageously, the first force is provided by a spring element, a magnetic force or another force applying device.
Die zweite Kraft wird in der Regel von zwei Kurvenpaketen bereitgestellt werden, wobei die Lage dieser beiden Kurvenpakete in Umfangsrichtung veränderlich ist. Durch diese Veränderbarkeit der Relativposition der beiden Kurvenpakete kann vorteilhafterweise eine Anpassung der Öffnungszeitpunkte des Greifers an die gewünschte Beutellänge vorgenommen werden.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.
Weitere Einzelheiten und Details der vorliegenden Erfindung sowie weitere Ausführungsbeispiele gehen aus den weiteren Ansprüchen, der Zeichnung und der gegenständlichen Beschreibung hervor. Die einzelnen Figuren zeigen:
- Fig. 1:
- Ansicht einer erfindungsgemäßen Bodenöffnungsstation
- Fig. 2:
- Ansicht gemäß I-I in
Fig.1 - Fig. 3:
- Ansicht einer Bodenöffnungsstation nach dem Stand der Technik
- Fig. 1:
- View of a floor opening station according to the invention
- Fig. 2:
- View according to II in
Fig.1 - 3:
- View of a floor opening station according to the prior art
Die
Zum Erfassen und zum Freigeben des zu formenden Bodens eines Schlauchstücks 4 muss der Greiferfinger 5 zwei Mal von dem das Schlauchstück 4 führende Teil des Auflagezylinders 3 entfernt werden. Zu diesem Zweck sind Steuerkurven vorgesehen, die auf den Stößel 6 beziehungsweise auf den Hebel 9 in der im Folgenden beschriebenen Weise wirken: Eine der axialen Steuerkurven 10, 12 wirkt auf das Schleifstück 14 und vermittelt so dem Stößel 6 ein Kraft. Diese Kraft ist derjenigen der Druckfeder 7 entgegen gerichtet und größer als diese, so dass letztendlich der Greiferfinger 5 in axialer Richtung von dem Schlauchstück 4 entfernt wird. In etwa gleichzeitig wirkt einer der beiden radiale Steuerkurven 11, 13 auf ein nicht sichtbares Schleifstück, welches an dem Hebel 9 angebracht ist. Die durch die radiale Steuerkurve 11 aufgebrachte Kraft wirkt der Zugfeder 8 entgegen und bewirkt ein zusätzliches Anheben des Greiferfingers 5 in radialer Richtung. Der Greiferfinger 5 befindet sich nun in einer so genannten geöffneten Position. Die Steuerkurven 10, 11, 12, 13 sind an einer Trägereinheit 15 befestigt, welcher wiederum mit dem Maschinengestell verbunden ist. Um einen konstanten Abstand zwischen der Trägereinheit 15 und der Welle 2 zu gewährleisten, ist zwischen diesen beiden Elementen ein Stützlager 16 vorgesehen.For detecting and releasing the bottom of a
Die eigentliche Bodenöffnung erfolgt nun dadurch, dass der Greiferfinger 5 das erste Kurvenpaket, bestehend aus den Steuerkurven 12 und 13, erreicht. In diesem Moment wird das vorrauslaufende Ende des Schlauchstückes 4 mit Hilfe eines nicht dargestellten Vakuumsaugers angehoben. Während dieser Anhebebewegung laufen die Schleifstücke auf die Steuerkurven 12, 13, so dass der Greiferfinger 5 geöffnet wird. Nach dem Passieren dieser Steuerkurven schließt sich der Greiferfinger 5 wieder, wodurch das Schlauchstück 4 mit seiner oberen Seite auf dem Auflagezylinder 3 arretiert wird. Durch die Rotationsbewegung des Bodenöffnungszylinders 1 wird das Schlauchstück 4 aufgezogen. Erreicht der Greiferfinger 5 die Steuerkurven 10, 11, wird der Greiferfinger 5 wieder geöffnet, so dass das Schlauchstück 4 mit dem nun geöffneten Boden aus der Bodenöffnungsstation entfernt und einer weiteren Verarbeitungsstation der Papierbeutelmaschine zugeführt werden kann.The actual bottom opening now takes place in that the
Um den Zeitpunkt, zu dem der Greiferfinger 5 das Schlauchstück 4 nach erfolgter Bodenöffnung wieder frei gibt, der gewünschten Größe des Bodens anpassen zu können, sind die Steuerkurven 10, 11 in Richtung des Doppelpfeiles B verschiebbar. Zu diesem Zweck sind die Steuerkurven 10, 11 auf nicht gezeigte Weise schnell lösbar mit der Trägereinheit 15 verbunden.In order to adjust the time at which the
Die
Claims (6)
- Bottom opening station (1) of a paper bag making machine,• which comprises a bottom opening cylinder (2),• which (2) has at least one gripper (5),• which (5) grips and stops a bag section (4),• and which (5), in the process, imparts to the bag section (4) a force in the direction of the axis of rotation of the bottom opening cylinder (1),• the force needed in each case to stop a bag section (4) being applied in the direction of the bag section (4) and in the direction of the axis of rotation of the bottom opening cylinder (1) by a first force-providing means (7,8), which provides this force during the whole of the rotation of the bottom opening cylinder (1) and• a second force-providing means (10-13) being provided• which imparts to the at least one gripper (5) a force• which counteracts the force of the first force-providing means (7,8) and opens the gripper (5),characterized in that
the second force-providing means comprise at least two sets of cams (10-13), it being possible to vary the relative position of these two sets of cams (10-13) in the circumferential direction (ϕ) of the bottom opening cylinder (1). - Bottom opening station (1) according to Claim 1,
characterized in that
the first force-providing means (10-13) comprise at least one spring element (7,8). - Bottom opening station (1) according to one of the preceding claims,
characterized in that
each set of cams (10-13) comprises at least two control cams (10-13). - Bottom opening station (1) according to the preceding claim,
characterized in that
it is possible for a force which is directed away from the bag section (4) in the axial direction of the bottom opening cylinder (1) to be imparted to the at least one gripper (5) by the first control cam (10,12) of each set of cams. - Bottom opening station (1) according to one of the two preceding claims,
characterized in that
it is possible for a force which is directed away from the axis of rotation of the bottom opening cylinder (1) in the radial direction to be imparted to the at least one gripper (5) by the second control cam (11,13) of each set of cams. - Method for opening the gripper (5) of a bottom opening station (1),• a bottom opening station (1) according to one of the preceding claims being used,• the first force-providing means (7,8) providing a first force which acts on the gripper (5) during the whole of the rotation of the bottom opening cylinder, and• the second force-providing means (10-13) providing a second force, which counteracts the first force, in order to open the gripper (5),characterized in that
the second force-providing means (10-13) provide the second force twice during a rotation of the bottom opening cylinder (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10344156 | 2003-09-22 | ||
DE10344156A DE10344156B4 (en) | 2003-09-22 | 2003-09-22 | Floor opening station of a paper bag machine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1516718A2 EP1516718A2 (en) | 2005-03-23 |
EP1516718A3 EP1516718A3 (en) | 2006-09-13 |
EP1516718B1 true EP1516718B1 (en) | 2008-02-27 |
Family
ID=34177913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04021274A Expired - Lifetime EP1516718B1 (en) | 2003-09-22 | 2004-09-08 | Bottom opening station in a paper bag apparatus |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1516718B1 (en) |
AT (1) | ATE387307T1 (en) |
DE (2) | DE10344156B4 (en) |
Families Citing this family (4)
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 (en) * | 2017-03-22 | 2022-09-16 | 浙江正博智能机械有限公司 | Paper movement corner device |
CN107225801B (en) * | 2017-08-02 | 2023-06-02 | 江苏方邦机械有限公司 | Paper bag machine closes end device and paper bag machine |
CN109397745A (en) * | 2018-12-11 | 2019-03-01 | 天津市津东华明纸箱厂 | A kind of carton bending forming mechanism |
Family Cites Families (6)
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 (en) * | 1967-08-25 | 1975-11-20 | Windmoeller & Hoelscher, 4540 Lengerich | Device for producing the bottoms in a block bottom bag machine |
DE4115161A1 (en) * | 1991-05-08 | 1992-11-12 | Windmoeller & Hoelscher | METHOD AND DEVICE FOR PRODUCING PAPER CARRYING BAGS |
DE19702144C2 (en) * | 1997-01-22 | 2003-03-13 | Windmoeller & Hoelscher | Method and device for producing bags with handles |
-
2003
- 2003-09-22 DE DE10344156A patent/DE10344156B4/en not_active Expired - Fee Related
-
2004
- 2004-09-08 DE DE502004006303T patent/DE502004006303D1/en not_active Expired - Lifetime
- 2004-09-08 AT AT04021274T patent/ATE387307T1/en active
- 2004-09-08 EP EP04021274A patent/EP1516718B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1516718A2 (en) | 2005-03-23 |
ATE387307T1 (en) | 2008-03-15 |
DE10344156A1 (en) | 2005-04-28 |
DE502004006303D1 (en) | 2008-04-10 |
EP1516718A3 (en) | 2006-09-13 |
DE10344156B4 (en) | 2008-02-07 |
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