EP3328629A1 - Device and method for securing an open bottom of a piece of tube - Google Patents

Device and method for securing an open bottom of a piece of tube

Info

Publication number
EP3328629A1
EP3328629A1 EP16738700.0A EP16738700A EP3328629A1 EP 3328629 A1 EP3328629 A1 EP 3328629A1 EP 16738700 A EP16738700 A EP 16738700A EP 3328629 A1 EP3328629 A1 EP 3328629A1
Authority
EP
European Patent Office
Prior art keywords
roller
counter
transport direction
seen
guide elements
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
EP16738700.0A
Other languages
German (de)
French (fr)
Other versions
EP3328629B1 (en
Inventor
Carsten Brommer
Jakob DERKSEN
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 EP3328629A1 publication Critical patent/EP3328629A1/en
Application granted granted Critical
Publication of EP3328629B1 publication Critical patent/EP3328629B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B31B70/004—Closing 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
    • B31B70/003—Opening or distending 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
    • 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
    • B31B2150/0014—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing transversally to 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/003—Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
    • 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
    • B31B2150/20—Flexible containers made from sheets or blanks, e.g. from flattened tubes the longitudinal axes of the containers being perpendicular to the direction in which the sheets or blanks are fed
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/04—Feeding sheets or blanks

Definitions

  • the invention relates to a device for fixing an open bottom of a piece of hose according to the preamble of claim 1 and an associated method according to the preamble of claim 13,
  • the object of the present invention is therefore to propose an apparatus and a method with which the manufacturing quality of the bags can be increased.
  • the front deflection roller is spaced from the counter-surface.
  • the currently open bottom is not pressed directly onto the counter-surface, but is first slowly approached the counter-position, thus it is possible to correct malformations or misalignments. Overall, the quality of the bags can be increased and the rejects reduced.
  • "open bottom” means that the front and rear walls have already been unfolded in the end area of the hose section, they are not yet in a plane, such a floor would still be not completely open. In the final state of the bottom opening, the front and rear walls lie in one plane.
  • the front wall was folded back on itself, while the back wall is completely - both the bag wall and the part of the bottom - located in a plane.
  • the open bottom is located substantially in the plane of the bag body.
  • the open bottom can lie in a different plane than the bag body, whereby the present invention is also applicable here.
  • the tape runs in a circumferential direction and has transversely to this circulation direction an extension which is at least ten times greater than its width »the width being at least 5 mm.
  • the tape is positioned so that it is the folding edge to at least the front or rear wall has been folded "detected.
  • the tape also captures the perpendicular bisector of the triangular corner impacts.
  • These mid-perpendiculars are substantially congruent with the fold lines formed by the side edges of the hose piece. Precisely due to the too rapid depression of these folded edges, errors can occur in devices of the prior art.
  • the rotational speed of the belt preferably equals the transport speed of the hose pieces in the device according to the invention.
  • the counter-position can be formed by a fixed support surface. However, it can be formed by a revolving, in particular rotating support element.
  • the running or rotational speed of the support element advantageously also corresponds to the transport speed of the hose pieces.
  • the invention advantageously has an effect when it comprises components of a device for producing sacks, which comprise a woven fabric of stretched or stretched polyolefin tapes, for example stretched or stretched polypropylene tapes.
  • a device for producing sacks which comprise a woven fabric of stretched or stretched polyolefin tapes, for example stretched or stretched polypropylene tapes.
  • This material is difficult to apply creases.
  • sacks can be processed particularly advantageously which, in addition to the aforementioned fabric, also comprise a feed, for example a feed Polyethylene coating, especially one that has been applied after the starting base hose material has been laid flat.
  • a feed Polyethylene coating especially one that has been applied after the starting base hose material has been laid flat.
  • the sack edge which can be found as described in the region of the mid-perpendicular of the floor triangles, again emphasized, since this coating usually protrudes at the side edges (so-called laminate supernatant).
  • the front guide pulley in or against the transport direction of the hose pieces form slidably.
  • the angle which the belt occupies downstream of the deflection roller with the counter-position can be changed. At a given transport speed, this can influence the speed of depression. This adjustment is advantageous when different bag formats are to be processed.
  • the front deflection roller follows a further pressure roller.
  • This is preferably positionally perpendicular to / and or in the transport direction of the hose pieces.
  • this pressure roller is also spaced from the counter-surface. So it does not cause the tape is pressed on the counter. Their distance to the counter-position is smaller than the distance between the front deflection roller and the counter-position. In this context, it is even conceivable to dispense with the tape, since then with the deflection roller and the pressure roller, the successive depression of the open bottom is made possible,
  • the pressure roller is preferably mounted in a pivot arm, which is preferably pivotable about the axis of rotation of the front guide roller.
  • a pivot arm which is preferably pivotable about the axis of rotation of the front guide roller.
  • the front deflection roller and / or the pressure roller follows - seen in the transport direction of the hose pieces - at least one pressure roller, with which the tape against the counter-position can be pressed. Only at the point of action of this pressure roller is the opened bottom thus completely depressed and fixed in its position.
  • a pressing tool preferably provided in press roller pair.
  • the belt as well as the individual rollers already described do not cover the entire width of the opened floor.
  • This pressing tool thus unfolds an optimal effect in connection with the device according to the invention, because only then is a pressing of a already optimally fixed its position ground.
  • a centering device is provided, with which in particular the folded edge of the Eckeinelle can be centered.
  • the folded edge is then centered when it lies on the folded edge of the folded front and / or rear wall.
  • the open bottom is symmetrical and can be further processed to a high quality bag.
  • the centering device acts on parts of the floor when it has already reached the area of influence of the front deflecting roller and / or the pressure roller and / or the pressure roller. Because then the corrected soil can be fixed immediately.
  • the centering device can be integrated in one or more of said rollers.
  • two guide elements are provided, which have a distance to each other transversely to the transport direction of the hose pieces, wherein the guide elements at least partially extend around the front guide pulley.
  • These are thus preferably adapted to the outer circumference of the deflection roller, so that the bottom run in between deflecting roller and counter-bearing, while still the guide elements act on the ground.
  • the guide elements act with their side edges on the ground, taking advantage of the presence of the folded edge in the Eckeinellen and in particular the presence of the laminate supernatant. On this or on these, the Leiteiement can exert a lateral force and thus correct the situation.
  • FIG. 1 side view of a device according to the invention
  • Fig. 1 shows a device 100 according to the invention, which may be part of a Bodenlegevorraum for the production of sacks of pieces of tubing.
  • the tube pieces of which a piece of tubing 101 is shown, are transported through the device 100 in succession transversely to their main extension on a table 102, which serves as an abutment or at least part of an abutment, by means of a transport device, not shown, in the transport direction z.
  • the tube piece 101 has an already open bottom 108 at its visible end. From this floor, the rear wall 103 and the front Eckeinschlag 104 and the rear Eckeinschlag 105 are visible. The floor 106 has not yet been pressed, so that the Eckeinetti 104 and 105 are still a bit high.
  • the device comprises a circulating belt 110, which is guided over deflecting rollers 111. These pulleys are rotatably mounted in a frame 112, which in turn is supported on a machine frame, not shown.
  • the band 110 is also deflected by the front guide roller 113. This deflection roller 113 is spaced in the direction x from the counter-position.
  • the front deflection roller adjoins the pressure roller 114 in the direction U, wherein this roller 114 is also spaced in the direction x from the counter-position.
  • the belt 110 is guided over a pressure roller 115, which presses the belt against the counter-surface 102 with a force.
  • This force is applied according to the embodiment shown by a resilient element, but the invention is not limited thereto.
  • the pressure roller 115 is rotatably mounted in an angled lever arm 116, which in turn is pivotally mounted in the frame in the pivot bearing 117, the resilient element is designed as a tension spring 118.
  • the band further pressure rollers 115 may be provided, which are arranged in the same manner on the frame 112.
  • the upper pressure roller 120 of a pair of pressure rollers 122 may be disposed on the frame 102.
  • the lower press roll 121 is arranged on the counter-layer 102, for example in a positionally fixed manner.
  • the upper press roller 120 is rotatably mounted in the lever arm 123, which is articulated in the pivot bearing 124. Also on this lever arm acts a resilient member 125, which is likewise shown as a spring, but is preferably formed as a pneumatic cylinder "which is not shown.
  • the press roller pair 122 serves for pressing the opened and fixed floor.
  • the entire band 1 10 also serves to press the opened and fixed bottom against the counter-layer 102,
  • the frame 112 is supported via a pivot bearing 130 on machine parts. About this pivot bearing 130, the frame 112 can be pivoted in the direction of the double arrow S »which in particular the distance of the front guide roller 1 13 to the counter-position 102 is adjustable.
  • the pressure rollers 1 15 and the upper pressure roller 120 do not change their position relative to the counter position during a pivoting movement, since they are pivotally mounted in the frame 1 12.
  • the front guide roller 113 is rotatably mounted in an extension piece 140, which in turn is mounted relative to the frame 1 12 slidably.
  • the deflection roller 1 13 can be moved relative to the counter position ultimately in or against the transport direction z. This possibility of displacement is represented by the double arrow V.
  • the pivot arm 141 is supported, which is mounted such that it can pivot in the direction of the double arrow W about the axis of rotation of the front guide roller 113.
  • the pressure roller 114 is mounted in the pivot arm 141.
  • a compensating roller 1 19 is provided, which is movable in the direction of the double arrow A and which is acted upon by a force. Overall, it provides for the compensation of the different path lengths.
  • another pivot lever 142 is supported, which is also preferably pivotable about the axis of rotation of the front guide roller 113. This pivoting movement is symbolized by the double arrow R.
  • a sliding plate 143 is slidably disposed, which can be moved in the direction of the double arrow P relative to the pivot lever 142 and thus relative to the front guide roller 113.
  • the guide elements 150 can be adjusted in the distance and, via the pivoting possibility, also in their circumferential position relative to the guide roller 113,
  • the opened bottom is grasped by the latter and by the band 110 in the region between the deflection roller 113 and the pressure roller 115, and the entire bottom is successively passed on laid down and thus fixed in its position.
  • the influence of the guide elements 150 can be seen more clearly in FIGS. 2 and 3. From the tube piece 101, the later bag body 107 can now be seen more clearly. In the view of Figure 2, the rear corner 105 is still visible. Furthermore, the laminate supernatant 152 can be seen, which is shown as a short, vertical bar.
  • the two guide elements 150 constitute a funnel-shaped inlet 151 into which the laminate projection or, if this is not present, the folded edge enters. If the laminate supernatant is incorrectly positioned, it is guided along the edges 153 of the guide elements 150 and thus corrected in the positioning.
  • the laminate projection 152 or the folded edge are shown in FIG. 3 as a broken line. It can also be seen the end portion 108 of the front wall, which is folded back on itself. The corresponding folded edge bears the reference numeral 109. Ideally, the folded edge 109 and the laminate projection 152 are in alignment, so that a sack satisfying the qualitative requirements can then be produced in the further course of the sack production.

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  • Making Paper Articles (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The invention relates to a device for securing an open bottom of a piece of tube (101) which consists of at least one plastic material, by means of at least one circulating belt (110) which can be guided over a front deflection roller (113) and at least one further roller, wherein the open side of the bottom can be acted on by the circulating belt (110), wherein the bottom can be pressed against a counter-contact surface by the circulating belt (110). The front deflection roller (130) is at a distance from the counter-contact surface.

Description

Vorrichtung und Verfahren zum Fixieren eines offenen Bodens eines  Device and method for fixing an open bottom of a
Schlauchstücks  hose piece
Die Erfindung betrifft eine Vorrichtung zum Fixieren eines offenen Bodens eines Schlauchstücks nach dem Oberbegriff des Anspruchs 1 sowie ein zugehöriges Verfahren nach dem Oberbegriff des Anspruchs 13, The invention relates to a device for fixing an open bottom of a piece of hose according to the preamble of claim 1 and an associated method according to the preamble of claim 13,
Als Ausgangsmaterial für Kunststoffsäcke werden oft Schlauchstücke verwendet, die flachgelegt sind und somit eine Vorderwand und eine Rückwand umfassen. Zur Herstellung von Kunststoffsäcken werden nun eines oder beide Enden der Schlauchstücke aufgezogen und ein Bodenrechteck gelegt. Dabei bilden sich auch Eckeinschläge aus, die die Form eines Dreiecks aufweisen. Bei beidendiger Bodenbildung werden die Schlauchstücke in der Regel quer durch die Bodenbildungseinrichtung transportiert, wobei Transportmittel vorgesehen sind. Das Öffnen der Enden erfolgt meist durch das Separieren der Vorder- und Rückwand im Bereich der Enden durch geeignete Sepaherungsmittel, insbesondere Sauger, die von außen die Vorder- und Rückwand ergreifen und auseinander ziehen. In den sich ergebenden Raum zwischen Vorder- und Rückwand tauchen nun Bodenbildungsmittel ein, die Vorder- und/oder Rückwand weiter auseinanderziehen und entlang einer vorgegebenen Falzkante umfalten. Dabei ergibt sich das bereits erwähnte Bodenrechteck zusammen mit den Eckeinschlägen und somit ein offener Boden. Dieser offene Boden kann direkt im Anschluss zu einem geschlossenen Boden weiterverarbeitet werden, Bei Säcken aus Kunststoff material ergibt sich jedoch das Problem, dass trotz Vorgabe von Falzkanten das Material dazu tendiert, wieder in die Ausgangsposition zurück zu kehren. Außerdem kann es bei den oft sehr glatten Oberflächen von Kunststoffmaterialien dazu kommen, dass sich die einzelnen Bestandteile des offenen Bodens gegeneinander verschieben. Zwar sind Presswerkzeuge bekannt, mit den ordnungsgemäß hergestellte Boden verpresst werden können, jedoch wird auch die Form der nicht ordnungsgemäß hergestellten Boden mit solchen Presswerkzeugen konserviert. Die WO 2012/49040 zeigt ein solches Presswerkzeug, welches ein umlaufendes Band umfasst, welches über eine vordere Umlenkrolle führbar ist. Das Band wirkt dabei auf die offene Seite des Bodens. Mit dem Band lässt sich der Boden gegen eine Gegenlage drücken. Jedoch führt die Umlenkrolle nicht nur das Band, sondern presst den Boden auf die Gegenlage, so dass - wie es bereits beschrieben wurde - Fehler in der Bodenöffnung direkt konserviert werden. As starting material for plastic bags often pieces of hose are used, which are laid flat and thus comprise a front wall and a rear wall. To produce plastic bags now one or both ends of the hose pieces are raised and placed a Boden rectangle. It also forms corner attacks, which have the shape of a triangle. At both bottoming the hose pieces are usually transported transversely through the bottom forming means, wherein means of transport are provided. The opening of the ends is usually carried out by separating the front and rear walls in the region of the ends by means of suitable separating means, in particular suckers, which grip and pull apart the front and rear walls from the outside. In the resulting space between the front and rear walls now dive bottom forming means, the front and / or rear wall continue to pull apart and fold along a predetermined folded edge. This results in the already mentioned Boden rectangle together with the Eckeinschlägen and thus an open floor. This open ground can be processed directly afterwards to a closed ground, In bags made of plastic material, however, there is the problem that despite default of folding edges, the material tends to return to the starting position back. In addition, with the often very smooth surfaces of plastic materials, it can happen that the individual components of the open floor shift against each other. Although pressing tools are known, can be pressed with the properly prepared soil, but also the shape of the improperly prepared soil is preserved with such pressing tools. WO 2012/49040 shows such a pressing tool, which comprises a circulating belt, which can be guided via a front deflection roller. The tape acts on the open side of the floor. With the tape, the ground can be pressed against an abutment. However, the diverting pulley not only guides the belt but presses the ground against the counter-surface so that, as already described, errors in the bottom opening are directly preserved.
Die Aufgabe der vorliegenden Erfindung ist es daher, eine Vorrichtung und ein Verfahren vorzuschlagen, mit denen sich die Herstellungsqualität der Säcke steigern lässt. The object of the present invention is therefore to propose an apparatus and a method with which the manufacturing quality of the bags can be increased.
Die Aufgabe wird durch eine Vorrichtung mit sämtlichen Merkmalen des Anspruchs i gelöst. In den abhängigen Ansprüchen sind mögliche Ausgestaltungen der Erfindung angegeben. The object is achieved by a device having all the features of claim i. In the dependent claims, possible embodiments of the invention are given.
Gemäß der vorliegenden Erfindung ist vorgesehen, dass die vordere Umlenkrolle von der Gegenlage beabstandet ist. In diesem Fall wird der gerade geöffnete Boden nicht direkt auf die Gegenlage gepresst, sondern wird zunächst langsam der Gegenlage angenähert, Damit wird es ermöglicht, Fehlbildungen oder Fehlstellungen zu korrigieren. Insgesamt lässt sich also die Qualität der Säcke steigern und der Ausschuss reduzieren. In diesem Zusammenhang bedeutet„geöffneter Boden" zwar, dass im Endbereich des Schlauchstücks bereits Vorder- und Rückwand auseinander gefaltet wurden, sich jedoch noch nicht in einer Ebene befinden. Ein solcher Boden wäre noch nicht vollständig geöffnet. Im Endzustand der Bodenöffnung liegen die Vorder- und Rückwand in einer Ebene. Vorzugsweise wurde dabei der die Vorderwand auf sich selbst zurückgefaltet, während die Rückwand sich vollständig - sowohl die Sackwandung als auch der Teil des Bodens - in einer Ebene befindet. Damit befindet sich der offene Boden im Wesentlichen in der Ebene des Sackkörpers. Grundsätzlich kann der offene Boden in einer anderen Ebene als der Sackkörper liegen, wobei auch hier die vorliegende Erfindung anwendbar ist. According to the present invention it is provided that the front deflection roller is spaced from the counter-surface. In this case, the currently open bottom is not pressed directly onto the counter-surface, but is first slowly approached the counter-position, thus it is possible to correct malformations or misalignments. Overall, the quality of the bags can be increased and the rejects reduced. In this context, although "open bottom" means that the front and rear walls have already been unfolded in the end area of the hose section, they are not yet in a plane, such a floor would still be not completely open. In the final state of the bottom opening, the front and rear walls lie in one plane. Preferably, the front wall was folded back on itself, while the back wall is completely - both the bag wall and the part of the bottom - located in a plane. Thus, the open bottom is located substantially in the plane of the bag body. In principle, the open bottom can lie in a different plane than the bag body, whereby the present invention is also applicable here.
Das Band läuft in einer Umlaufrichtung und hat quer zu dieser Umlauf richtung eine Erstreckung, die mindestens zehnmal größer ist als dessen Breite» wobei die Breite mindestens 5 mm beträgt. Vorzugsweise ist das Band so positioniert, dass es die Falzkante, um die mindestens die Vorder- oder Rückwand umgefaltet wurde» erfasst. Damit erfasst das Band auch die Mittelsenkrechte der dreieckigen Eckeinschläge. Diese Mittelsenkrechten sind im Wesentlichen deckungsgleich mit den durch die Seitenkanten des Schlauchstücks gebildeten Falzlinien. Gerade durch das zu schnelle Niederdrücken dieser Falzkanten kann es in Vorrichtungen des Standes der Technik zu Fehlern kommen. Die Umlaufgeschwindigkeit des Bandes gleicht vorzugsweise der Transportgeschwindigkeit der Schlauchstücke in der erfindungsgemäßen Vorrichtung. The tape runs in a circumferential direction and has transversely to this circulation direction an extension which is at least ten times greater than its width »the width being at least 5 mm. Preferably, the tape is positioned so that it is the folding edge to at least the front or rear wall has been folded "detected. Thus, the tape also captures the perpendicular bisector of the triangular corner impacts. These mid-perpendiculars are substantially congruent with the fold lines formed by the side edges of the hose piece. Precisely due to the too rapid depression of these folded edges, errors can occur in devices of the prior art. The rotational speed of the belt preferably equals the transport speed of the hose pieces in the device according to the invention.
Die Gegenlage kann durch eine feststehende Auflagefläche gebildet werden. Sie kann jedoch durch ein mitlaufendes, insbesondere umlaufendes Auflageelement gebildet werden. Die Mitlauf- bzw. Umlaufgeschwindigkeit des Auflageelements entspricht vorteilhafterweise ebenfalls der Transportgeschwindigkeit der Schlauchstücke. The counter-position can be formed by a fixed support surface. However, it can be formed by a revolving, in particular rotating support element. The running or rotational speed of the support element advantageously also corresponds to the transport speed of the hose pieces.
Vorteilhaft wirkt sich die Erfindung aus, wenn sie Bestandteile einer Vorrichtung zur Herstellung von Säcken aus, die ein Gewebe aus gestreckten oder gereckten Polyolefinbändchen umfassen, beispielsweise gestreckten oder gereckten Polypropylenbändchen. Bei diesem Material lassen sich nur schwierig Falzlinien aufprägen. Besonders vorteilhaft lassen sich in der erfindungsgemäßen Vorrichtung Säcke verarbeiten, die neben dem genannten Gewebe auch eine Beschickung umfassten, beispielsweise eine Polyethylenbeschichtung, insbesondere eine solche, die aufgetragen wurde, nachdem das als Ausgangsbasis dienende Schlauchmaterial flachgelegt wurde. In diesem Fall werden die Sackkante, die sich wie beschrieben in Bereich der Mittelsenkrechten der Bodendreiecke wiederfinden lassen, nochmals betont, da diese Beschichtung in der Regel an den Seitenkanten übersteht (so genannter Laminatüberstand). The invention advantageously has an effect when it comprises components of a device for producing sacks, which comprise a woven fabric of stretched or stretched polyolefin tapes, for example stretched or stretched polypropylene tapes. This material is difficult to apply creases. In the device according to the invention, sacks can be processed particularly advantageously which, in addition to the aforementioned fabric, also comprise a feed, for example a feed Polyethylene coating, especially one that has been applied after the starting base hose material has been laid flat. In this case, the sack edge, which can be found as described in the region of the mid-perpendicular of the floor triangles, again emphasized, since this coating usually protrudes at the side edges (so-called laminate supernatant).
Um nun ein optimales Niederdrücken des offenen Bodens zu erzielen, ist in weitere Ausgestaltung der Erfindung vorgesehen, die vordere Umlenkrolle in oder gegen die Transportrichtung der Schlauchstücke verschiebbar auszubilden. Damit kann insbesondere der Winkel, den das Band stromabwärts der Umlenkrolle mit der Gegenlage einnimmt, verändert werden. Bei einer gegebenen Transportgeschwindigkeit kann damit die Geschwindigkeit des Niederdrückens beeinflusst werden. Diese Einstellmöglichkeit ist vorteilhaft, wenn unterschiedliche Sackformate verarbeitet werden sollen. In order to achieve an optimal depression of the open bottom, is provided in a further embodiment of the invention, the front guide pulley in or against the transport direction of the hose pieces form slidably. Thus, in particular, the angle which the belt occupies downstream of the deflection roller with the counter-position can be changed. At a given transport speed, this can influence the speed of depression. This adjustment is advantageous when different bag formats are to be processed.
In einer weiteren Ausgestaltung der Erfindung folgt in Transportrichtung der Schlauchstücke gesehen der vorderen Umlenkrolle eine weitere Andrückrolle. Diese ist vorzugsweise senkrecht zur/und oder in Transportrichtung der Schlauchstücke positionsveränderbar. Damit werden die im Zusammenhang mit der vorderen Umlenkrolle beschriebenen Positionierungsmöglichkeiten nochmals erweitert, so dass die Anpassbarkeit nochmals verbessert wird. Vorteilhaft ist es dabei, wenn auch diese Andrückrolle ebenfalls von der Gegenlage beabstandet ist. Sie führt also nicht dazu, dass das Band auf die Gegenlage gedrückt wird. Ihr Abstand zur Gegenlage ist dabei kleiner als der Abstand zwischen der vorderen Umlenkrolle und der Gegenlage. In diesem Zusammenhang ist es sogar denkbar, auf das Band zu verzichten, da dann mit der Umlenkrolle und der Andrückrolle das sukzessive Niederdrücken des geöffneten Bodens ermöglicht wird, In a further embodiment of the invention, as seen in the transport direction of the hose pieces, the front deflection roller follows a further pressure roller. This is preferably positionally perpendicular to / and or in the transport direction of the hose pieces. Thus, the positioning possibilities described in connection with the front guide roller are once again extended, so that the adaptability is further improved. It is advantageous if this pressure roller is also spaced from the counter-surface. So it does not cause the tape is pressed on the counter. Their distance to the counter-position is smaller than the distance between the front deflection roller and the counter-position. In this context, it is even conceivable to dispense with the tape, since then with the deflection roller and the pressure roller, the successive depression of the open bottom is made possible,
Die Andrückrolle ist bevorzugt in einem Schwenkarm gelagert, wobei dieser vorzugsweise um die Drehachse der vorderen Umlenkrolle schwenkbar ist. Mit der Anordnung des Schwenkarms an der Umlenkrolle wird mit der Positionierung der vorderen Umlenkrolle auch eine Positionierung der Andrückrolle ermöglicht, so dass die Anpassung der erfindungsgemäßen Vorrichtung vereinfacht wird. Durch die Schwenkmöglichkeit wird andererseits die Einstellung der Andrückrolle unabhängig von der Umlenkrolle gewährleistet, so dass eine größtmögliche Variabilität der Einstellung gegeben ist. The pressure roller is preferably mounted in a pivot arm, which is preferably pivotable about the axis of rotation of the front guide roller. With the arrangement of the swivel arm on the pulley with the positioning of the front pulley is also a positioning of the Pressure roller allows, so that the adaptation of the device according to the invention is simplified. On the other hand, the possibility of pivoting ensures that the pressure roller is adjusted independently of the deflection roller, so that the greatest possible variability of the adjustment is ensured.
Der vorderen Umlenkrolle und/oder der Andrückrolle folgt - in Transportrichtung der Schlauchstücke gesehen - wenigstens eine Druckrolle, mit welcher das Band gegen die Gegenlage drückbar ist. Erst an der Einwirkstelle dieser Druckrolle ist der geöffnete Boden somit vollständig niedergedrückt und in seiner Lage fixiert. The front deflection roller and / or the pressure roller follows - seen in the transport direction of the hose pieces - at least one pressure roller, with which the tape against the counter-position can be pressed. Only at the point of action of this pressure roller is the opened bottom thus completely depressed and fixed in its position.
Weiterhin ist in Transportrichtung der Schlauchstücke gesehen hinter der vorderen Umlenkrolle, insbesondere auch hinter der Andrückrolle und besonders bevorzugt hinter der Druckrolle, ein Presswerkzeug, vorzugsweise in Presswalzenpaar vorgesehen. Das Band sowie die einzelnen, bereits beschriebenen Rollen erfassen nicht die gesamte Breite des geöffneten Bodens. Damit erfolgen das eigentliche Verpressen des Bodens und das damit einhergehende, vollständige Fixieren der Falzkanten erst durch das Presswerkzeug. Dieses Presswerkzeug entfaltet somit eine optimale Wirkung im Zusammenhang mit der erfindungsgemäßen Vorrichtung, denn nur dann erfolgt ein Verpressen eines bereits optimal seiner ihrer Lage fixierten Bodens. Furthermore, seen in the transport direction of the hose pieces behind the front guide roller, in particular behind the pressure roller and particularly preferably behind the pressure roller, a pressing tool, preferably provided in press roller pair. The belt as well as the individual rollers already described do not cover the entire width of the opened floor. Thus, the actual pressing of the soil and the concomitant, complete fixing of the folding edges done only by the pressing tool. This pressing tool thus unfolds an optimal effect in connection with the device according to the invention, because only then is a pressing of a already optimally fixed its position ground.
In einer besonders bevorzugten Weiterbildung der Erfindung ist eine Zentriereinrichtung vorgesehen, mit welcher insbesondere die Falzkante der Eckeinschläge zentrierbar ist. Die Falzkante ist dann zentriert, wenn sie auf der Falzkante der umgefalteten Vorder- und/oder Rückwand liegt. In diesem Fall ist der geöffnete Boden symmetrisch und kann zu einem qualitativ hochwertigen Sack weiter verarbeitet werden. Mit der Zentriereinrichtung lassen sich somit die möglicherweise bei der Bodenöffnung aufgetretenen Fehlstellungen korrigieren. Vorzugsweise wirkt die Zentriereinrichtung auf Teile des Bodens ein, wenn dieser bereits in den Einflussbereich der vorderen Umlenkrolle und/oder der Andrückrolle und/oder der Druckrolle gelangt ist. Denn dann kann der korrigierte Boden sofort fixiert werden. Beispielsweise kann die Zentriereinrichtung in einer oder mehreren der genannten Rollen integriert sein. Gemäß einer vorteilhaften Ausgestaltung der Zentriereinrichtung sind zwei Leitelemente vorgesehen, welche quer zur Transportrichtung der Schlauchstücke einen Abstand zueinander aufweisen, wobei die Leitelemente zumindest teilweise um die vordere Umlenkrolle herum reichen. Diese sind also vorzugsweise an den Außenumfang der Umlenkrolle angepasst, so dass der Boden zwischen Umlenkrolle und Gegenlage einlaufen, während noch die Leitelemente auf den Boden einwirken. Die Leitelemente wirken mit ihren Seitenkanten auf den Boden ein, wobei das Vorhandensein der Falzkante in den Eckeinschlägen und insbesondere das Vorhandensein des Laminatüberstandes ausgenutzt wird. Auf diese bzw.. auf diesen kann das Leiteiement eine seitliche Kraft ausüben und so die Lage korrigieren. In a particularly preferred embodiment of the invention, a centering device is provided, with which in particular the folded edge of the Eckeinschläge can be centered. The folded edge is then centered when it lies on the folded edge of the folded front and / or rear wall. In this case, the open bottom is symmetrical and can be further processed to a high quality bag. By means of the centering device, it is thus possible to correct the misalignments possibly occurring during the opening of the floor. Preferably, the centering device acts on parts of the floor when it has already reached the area of influence of the front deflecting roller and / or the pressure roller and / or the pressure roller. Because then the corrected soil can be fixed immediately. For example, the centering device can be integrated in one or more of said rollers. According to an advantageous embodiment of the centering device two guide elements are provided, which have a distance to each other transversely to the transport direction of the hose pieces, wherein the guide elements at least partially extend around the front guide pulley. These are thus preferably adapted to the outer circumference of the deflection roller, so that the bottom run in between deflecting roller and counter-bearing, while still the guide elements act on the ground. The guide elements act with their side edges on the ground, taking advantage of the presence of the folded edge in the Eckeinschlägen and in particular the presence of the laminate supernatant. On this or on these, the Leiteiement can exert a lateral force and thus correct the situation.
Um eine optimale Wirkung zu entfalten, ist vorgesehen, dass der Abstand der Leitelemente sich in Transportrichtung stetig verringert, so dass die Kombination beider Leitelemente für die Falzkante bzw. den Laminatüberstand einen Trichter bildet. In diesem Fall lässt sich die Genauigkeit bei der Korrektur sogar noch erhöhen. Weitere Vorteile, Merkmale und Einzelheiten der Erfindung gehen aus der nachfolgenden Beschreibung hervor, in der unter Bezugnahme auf die Figuren verschiedene Ausführungsbeispiele im Einzelnen erläutert sind. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder beliebige Kombinationen erwähnter Merkmale erfindungswesentlich sein. Im Rahmen der gesamten Offenbarung gelten Merkmale und Einzelheiten, die im Zusammenhang mit dem erfindungsgemäßen Verfahren beschrieben sind, selbstverständlich auch im Zusammenhang mit der erfindungsgemäßen Vorrichtung und jeweils umgekehrt, so dass bezüglich der Offenbarung zu den einzelnen Aspekten der Erfindung stets wechselseitig Bezug genommen wird beziehungsweise werden kann. Die einzelnen Figuren zeigen: In order to develop an optimum effect, it is provided that the spacing of the guide elements is steadily reduced in the transport direction, so that the combination of the two guide elements for the folded edge or the laminate supernatant forms a funnel. In this case, the accuracy of the correction can even be increased. Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the figures, various embodiments are explained in detail. The features mentioned in the claims and in the description may each be essential to the invention individually or for any combination of mentioned features. Within the scope of the entire disclosure, features and details described in connection with the method according to the invention apply, of course also in connection with the device according to the invention and in each case vice versa, so that reciprocal reference is always made to the disclosure of the individual aspects of the invention can. The individual figures show:
Fig. 1 Seitenansicht einer erfindungsgemäßen Vorrichtung Fig. 1 side view of a device according to the invention
Fig. 2 Ansicht II-II aus der Figur 1 Fig. 3 Ansicht III-III aus der Figur 2 Fig. 2 view II-II of Figure 1 Fig. 3 view III-III of Figure 2
Fig. 1 zeigt eine erfindungsgemäße Vorrichtung 100, die Bestandteil einer Bodenlegevorrichtung zur Herstellung von Säcken aus Schlauchstücken, sein kann. Die Schlauchstücke, von denen ein Schlauchstück 101 gezeigt ist, werden aufeinander abfolgend quer zur ihrer HaupterstreckungsriGhtung auf einem Tisch 102, der als Gegenlage dient oder zumindest Teil einer Gegenlage ist mittels einer nicht gezeigten Transporteinrichtung in Transportrichtung z durch die Vorrichtung 100 transportiert. Das Schlauchstück 101 weist an seinem sichtbaren Ende einen bereits geöffneten Boden 108 auf. Von diesem Boden sind die Rückwand 103 sowie der vordere Eckeinschlag 104 sowie der hintere Eckeinschlag 105 sichtbar. Der Boden 106 ist noch nicht verpresst worden, so dass die Eckeinschläge 104 und 105 noch etwas hochstehen. Fig. 1 shows a device 100 according to the invention, which may be part of a Bodenlegevorrichtung for the production of sacks of pieces of tubing. The tube pieces, of which a piece of tubing 101 is shown, are transported through the device 100 in succession transversely to their main extension on a table 102, which serves as an abutment or at least part of an abutment, by means of a transport device, not shown, in the transport direction z. The tube piece 101 has an already open bottom 108 at its visible end. From this floor, the rear wall 103 and the front Eckeinschlag 104 and the rear Eckeinschlag 105 are visible. The floor 106 has not yet been pressed, so that the Eckeinschläge 104 and 105 are still a bit high.
Die Einrichtung umfasst ein umlaufendes Band 110, welches über Umlenkrollen 111 geführt wird. Diese Umlenkrollen sind drehbar in einem Rahmen 112 gelagert, welcher sich wiederum an einem nicht dargestellten Maschinengestell abstützt. Das Band 110 wird darüber hinaus durch die vordere Umlenkrolle 113 umgelenkt. Diese Umlenkrolle 113 ist in Richtung x von der Gegenlage beabstandet. Der vorderen Umlenkrolle schließt sich in Richtung U die Andrückrolle 114 an, wobei auch diese Rolle 114 in Richtung x von der Gegenlage beabstandet ist. The device comprises a circulating belt 110, which is guided over deflecting rollers 111. These pulleys are rotatably mounted in a frame 112, which in turn is supported on a machine frame, not shown. The band 110 is also deflected by the front guide roller 113. This deflection roller 113 is spaced in the direction x from the counter-position. The front deflection roller adjoins the pressure roller 114 in the direction U, wherein this roller 114 is also spaced in the direction x from the counter-position.
Im weiteren Verlauf wird das Band 110 über eine Druckrolle 115 geführt, welche das Band mit einer Kraft auf die Gegenlage 102 drückt. Diese Kraft wird gemäß dem gezeigten Ausführungsbeispiel durch ein federndes Element aufgebracht, wobei jedoch die Erfindung nicht hierauf beschränkt ist. Die Druckrolle 115 ist drehbar in einem abgewinkelten Hebelarm 116 gelagert, welcher wiederum in dem Rahmen schwenkbar im Schwenklager 117 angelenkt ist, Das federnde Element ist als Zugfeder 118 ausgebildet. Im weiteren Verlauf des Bandes können weitere Druckrollen 115 vorgesehen sein, welche auf gleiche Weise an dem Rahmen 112 angeordnet sind. In ähnlicher Weise wie die Druckrolle 1 15 kann die obere Presswalze 120 eines Presswalzenpaares 122 am Rahmen 102 angeordnet sein. Die untere Presswalze 121 ist hingegen - beispielsweise positionsfest - an der Gegenlage 102 angeordnet. Die obere Presswalze 120 ist drehbar im Hebelarm 123 gelagert, welche im Schwenklager 124 angelenkt ist. Auch auf diesen Hebelarm wirkt ein federndes Element 125, welches zwar ebenfalls als Feder dargestellt ist, aber vorzugsweise als Pneumatikzylinder ausgebildet ist» was jedoch nicht gezeigt ist. Das Presswalzenpaar 122 dient dem Verpressen des geöffneten und fixierten Bodens. Ferner dient auch das gesamte Band 1 10 dem Andrücken des geöffneten und fixierten Bodens an die Gegenlage 102, In the further course, the belt 110 is guided over a pressure roller 115, which presses the belt against the counter-surface 102 with a force. This force is applied according to the embodiment shown by a resilient element, but the invention is not limited thereto. The pressure roller 115 is rotatably mounted in an angled lever arm 116, which in turn is pivotally mounted in the frame in the pivot bearing 117, the resilient element is designed as a tension spring 118. In the further course of the band further pressure rollers 115 may be provided, which are arranged in the same manner on the frame 112. Similarly to the pressure roller 15, the upper pressure roller 120 of a pair of pressure rollers 122 may be disposed on the frame 102. On the other hand, the lower press roll 121 is arranged on the counter-layer 102, for example in a positionally fixed manner. The upper press roller 120 is rotatably mounted in the lever arm 123, which is articulated in the pivot bearing 124. Also on this lever arm acts a resilient member 125, which is likewise shown as a spring, but is preferably formed as a pneumatic cylinder "which is not shown. The press roller pair 122 serves for pressing the opened and fixed floor. Furthermore, the entire band 1 10 also serves to press the opened and fixed bottom against the counter-layer 102,
Der Rahmen 112 stützt sich über ein Schwenklager 130 auf Maschinenteilen ab. Über dieses Schwenklager 130 kann der Rahmen 112 in Richtung des Doppelpfeiles S geschwenkt werden» womit insbesondere der Abstand der vorderen Umlenkrolle 1 13 zur Gegenlage 102 einstellbar ist. Die Druckrollen 1 15 und die obere Presswalze 120 verändern bei einer Schwenkbewegung ihre Position relativ zur Gegenlage nicht, da sie im Rahmen 1 12 schwenkbar gelagert sind. Die vordere Umlenkrolle 113 ist drehbar in einem Ansatzstück 140 gelagert, welches wiederum relativ zum Rahmen 1 12 verschieblich gelagert ist. Somit kann die Umlenkrolle 1 13 letztendlich relativ zur Gegenlage in oder gegen die Transportrichtung z verschoben werden. Diese Verschiebemöglichkeit ist mit dem Doppelpfeil V dargestellt. The frame 112 is supported via a pivot bearing 130 on machine parts. About this pivot bearing 130, the frame 112 can be pivoted in the direction of the double arrow S »which in particular the distance of the front guide roller 1 13 to the counter-position 102 is adjustable. The pressure rollers 1 15 and the upper pressure roller 120 do not change their position relative to the counter position during a pivoting movement, since they are pivotally mounted in the frame 1 12. The front guide roller 113 is rotatably mounted in an extension piece 140, which in turn is mounted relative to the frame 1 12 slidably. Thus, the deflection roller 1 13 can be moved relative to the counter position ultimately in or against the transport direction z. This possibility of displacement is represented by the double arrow V.
Auf dem Ansatzstück 140 stützt sich der Schwenkarm 141 ab, der derart gelagert ist, dass er sich in Richtung des Doppelpfeils W um die Drehachse der vorderen Umlenkrolle 113 schwenken lässt. In dem Schwenkarm 141 ist die Andrückrolle 114 gelagert. Da dadurch die Weglänge des Bandes 110 zwischen den Rollen 113 und 1 15 variabel ist, ist eine Ausgleichsrolle 1 19 vorgesehen, die in Richtung des Doppelpfeiles A bewegbar ist und die mit einer Kraft beaufschlagt ist. Insgesamt sorgt sie damit für den Ausgleich der unterschiedlichen Weglängen. Auf dem Ansatzstück 140 stützt sich noch ein weiterer Schwenkhebel 142 ab, welcher ebenfalls vorzugsweise um die Drehachse der vorderen Umlenkrolle 113 schwenkbar ist. Diese Schwenkbewegung wird durch den Doppelpfeil R symbolisiert. An dem Schwenkhebel 142 ist verschiebbar eine Verschiebeplatte 143 angeordnet, die sich in Richtung des Doppelpfeils P relativ zum Schwenkhebel 142 und damit relativ zur vorderen Umlenkwalze 113 verschieben lässt. Damit lassen sich letztendlich die Leitelemente 150 in dem Abstand und über die Schwenkmöglichkeit auch in ihrer Umfangsposition relativ zu der Umlenkwalze 113 einstellen, On the extension piece 140, the pivot arm 141 is supported, which is mounted such that it can pivot in the direction of the double arrow W about the axis of rotation of the front guide roller 113. In the pivot arm 141, the pressure roller 114 is mounted. As a result, since the path length of the belt 110 between the rollers 113 and 15 is variable, a compensating roller 1 19 is provided, which is movable in the direction of the double arrow A and which is acted upon by a force. Overall, it provides for the compensation of the different path lengths. On the extension piece 140, another pivot lever 142 is supported, which is also preferably pivotable about the axis of rotation of the front guide roller 113. This pivoting movement is symbolized by the double arrow R. On the pivot lever 142, a sliding plate 143 is slidably disposed, which can be moved in the direction of the double arrow P relative to the pivot lever 142 and thus relative to the front guide roller 113. In this way, finally, the guide elements 150 can be adjusted in the distance and, via the pivoting possibility, also in their circumferential position relative to the guide roller 113,
Wenn das Schlauchstück 101 nun mit der vorderen Ecke des vorderen Eckeinschlags 104 in den Bereich der Leitelemente 150 gelangt, so wird durch diese sowie durch das Band 110 im Bereich zwischen der Umlenkrolle 113 und der Druckrolle 115 der geöffnete Boden erfasst und der komplette Boden sukzessive weiter niedergelegt und damit in seiner Lage fixiert. If the tube piece 101 now enters the region of the guide elements 150 with the front corner of the front corner impact 104, the opened bottom is grasped by the latter and by the band 110 in the region between the deflection roller 113 and the pressure roller 115, and the entire bottom is successively passed on laid down and thus fixed in its position.
Der Einfluss der Leitelemente 150 ist in den Figuren 2 und 3 deutlicher zu erkennen. Von dem Schlauchstück 101 ist nun der spätere Sackkörper 107 deutlicher zu erkennen. In der Ansicht der Figur 2 ist weiterhin der hintere Eckeinschlag 105 zu sehen. Weiterhin ist der Laminatüberstand 152 zu erkennen, der als kurzer, senkrechter Strich eingezeichnet ist. Die beiden Leitelemente 150 biiden einen trichterförmigen Einlauf 151 aus, in welchen der Laminatüberstand oder, wenn dieser nicht vorhanden ist, die Falzkante einläuft. Bei einer Fehlpositionierung des Laminatüberstandes wird dieser entlang der Kanten 153 der Leitelemente 150 geführt und damit in der Positionierung korrigiert. The influence of the guide elements 150 can be seen more clearly in FIGS. 2 and 3. From the tube piece 101, the later bag body 107 can now be seen more clearly. In the view of Figure 2, the rear corner 105 is still visible. Furthermore, the laminate supernatant 152 can be seen, which is shown as a short, vertical bar. The two guide elements 150 constitute a funnel-shaped inlet 151 into which the laminate projection or, if this is not present, the folded edge enters. If the laminate supernatant is incorrectly positioned, it is guided along the edges 153 of the guide elements 150 and thus corrected in the positioning.
Der Laminatüberstand 152 bzw, die Falzkante sind in der Figur 3 als unterbrochene Linie eingezeichnet. Zu erkennen ist weiterhin der Endbereich 108 der Vorderwand, die auf sich selbst zurückgefaltet ist. Die entsprechende Falzkante trägt das Bezugszeichen 109, Im Idealfall fluchten die Falzkante 109 und der Laminatüberstand 152, so dass dann im weiteren Verlauf der Sackherstellung ein den qualitativen Anforderungen genügender Sack hergestellt werden kann. The laminate projection 152 or the folded edge are shown in FIG. 3 as a broken line. It can also be seen the end portion 108 of the front wall, which is folded back on itself. The corresponding folded edge bears the reference numeral 109. Ideally, the folded edge 109 and the laminate projection 152 are in alignment, so that a sack satisfying the qualitative requirements can then be produced in the further course of the sack production.

Claims

Patentansprüche claims
1. Vorrichtung (100) zum Fixieren eines offenen Bodens eines SchlauchstücksA device (100) for fixing an open bottom of a piece of tubing
(101 ), welches aus wenigstens einem Kunststoffmaterial besteht, (101), which consists of at least one plastic material,
mit mindestens einem umlaufenden Band (110), welches über eine vordere Umlenkrolle (113) und wenigstens eine weitere Rolle führbar ist, wobei mit dem umlaufenden Band (113) auf die offene Seite des Bodens (106) einwirkbar ist, wobei der Boden (106) durch das umlaufende Band (113) gegen eine Gegenlage drückbar ist» with at least one circulating belt (110), which can be guided via a front deflecting roller (113) and at least one further roller, wherein the circulating belt (113) can act on the open side of the bottom (106), the bottom (106 ) can be pressed against an abutment by the circulating band (113) »
dadurch gekennzeichnet, dass  characterized in that
die vordere Umlenkrolle (113) von der Gegenlage beabstandet ist.  the front deflection roller (113) is spaced from the counter-surface.
2. Vorrichtung (100) nach Anspruch 1 , 2. Device (100) according to claim 1,
dadurch gekennzeichnet, dass  characterized in that
die vordere Umlenkrolle (113) in oder gegen die Transportrichtung (U) des the front deflection roller (113) in or against the transport direction (U) of the
Schlauchstücks (101 ) verschiebbar ist, Hose piece (101) is displaceable,
3. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 3. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die vordere Umlenkrolle (113) relativ zur Gegenlage höhenverstellbar ist.  the front deflection roller (113) is height-adjustable relative to the counter-position.
4. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 4. Device (100) according to one of the preceding claims,
dadyroh gekennzeichnet, dass  dadyroh marked that
in Transportrichtung (U) der Schlauchstücke (101 ) gesehen der vorderen Um- lenkrolle (113) wenigstens eine weitere Andrückrolle (114) folgt, welche senkrecht zur und/oder in Transportrichtung (U) verschiebbar ist. in the direction of transport (U) of the tube pieces (101) seen the front Um- Steering roller (113) follows at least one further pressure roller (114) which is displaceable perpendicular to and / or in the transport direction (U).
5. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 5. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die weitere Andrückrolie (114) in einem Schwenkarm (141 , 142) gelagert ist, wobei der Schwenkarm (141 , 142) um die Drehachse der vorderen Umlenkrolle (113) schwenkbar ist  the further Andrückrolie (114) is mounted in a pivot arm (141, 142), wherein the pivot arm (141, 142) about the axis of rotation of the front guide roller (113) is pivotable
6. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 6. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
in Transportrichtung (U) der Schlauchstücke (101 ) gesehen der vorderen Umlenkrolle (113) wenigstens eine Druckrolle (115) folgt, mit welcher das Band gegen die Gegenlage drückbar ist.  seen in the transport direction (U) of the hose pieces (101) of the front guide roller (113) at least one pressure roller (115) follows, with which the tape against the counter-position can be pressed.
7. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 7. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
in Transportrichtung (U) der Schlauchstücke (101 ) gesehen der vorderen Umlenkrolle (113) ein Presswalzenpaar (122) vorgesehen ist, welches eine Presswalze und eine Gegenlage umfasst, mit welchen der geöffnete Boden ver- pressbar ist.  seen in the transport direction (U) of the hose pieces (101) seen from the front guide roller (113) a pair of press rollers (122) is provided, which comprises a press roll and a counter-surface, with which the open bottom can be pressed.
8. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 8. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
eine Zentriereinrichtung vorgesehen ist, mit welcher die Lage der Faizkante der Eckeinschläge korrigierbar ist,  a centering device is provided with which the position of the faiz edge of the corner impacts can be corrected,
9. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 9. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
zwei Leitelemente (150) vorgesehen sind, welche quer zur Transportrichtung (U) zueinander einen Abstand zueinander aufweisen, wobei die Leitelemente (150) zumindest teilweise um die vordere Umlenkrolle (113) herum reichen. two guide elements (150) are provided which have a distance to one another at right angles to the transport direction (U), the guide elements (150) at least partially reaching around the front guide roller (113).
10. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 10. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
der Abstand der Leitelemente (150) in Transportrichtung (U) gesehen stetig verringert ist.  the distance of the guide elements (150) seen in the transport direction (U) is steadily reduced.
1 1. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 1 1. A device (100) according to any one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Leitelemente (150) relativ zur Gegenlage höhenverstellbar sind.  the guide elements (150) are height-adjustable relative to the counter-position.
12. Vorrichtung (100) nach einem der vorstehenden Ansprüche, 12. Device (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass  characterized in that
die Leitelemente (150) mit einem Schwenkarm (141 , 142) verbunden sind, wobei der Schwenkarm um die Drehachse der vorderen Umlenkrolle (1 13) schwenkbar ist.  the guide elements (150) are connected to a pivoting arm (141, 142), wherein the pivoting arm is pivotable about the axis of rotation of the front deflection roller (1 13).
13. Verfahren zum Fixieren eines offenen Bodens eines Schlauchstücks (101 ), welches aus wenigstens einem Kunststoffmaterial besteht, 13. A method for fixing an open bottom of a hose piece (101), which consists of at least one plastic material,
mit mindestens einem umlaufenden Band (110), welches über eine vordere Umlenkrolle (113) und wenigstens eine weitere Rolle geführt wird, wobei mit dem umlaufenden Band (1 10) auf die offene Seite des Bodens eingewirkt wird, wobei der Boden durch das umlaufende Band (110) gegen eine Gegenlage gedrückt wird,  with at least one circulating belt (110), which is guided over a front guide roller (113) and at least one further roller, wherein the circulating belt (1 10) is acted upon the open side of the floor, wherein the bottom by the circulating belt (110) is pressed against an abutment,
dadurch gekennzeichnet, dass  characterized in that
der geöffnete Boden des Schlauchstücks (101 ) zwischen der von der Gegenlage beabstandeten vorderen Umlenkrolle (1 13) und der Gegenlage eingeführt wird.  the opened bottom of the hose piece (101) is inserted between the front deflecting roller (13) spaced from the counter-bearing and the counter-bearing.
EP16738700.0A 2015-07-31 2016-07-01 Device and method for securing an open bottom of a piece of tube Active EP3328629B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015214664 2015-07-31
PCT/EP2016/065560 WO2017021077A1 (en) 2015-07-31 2016-07-01 Device and method for securing an open bottom of a piece of tube

Publications (2)

Publication Number Publication Date
EP3328629A1 true EP3328629A1 (en) 2018-06-06
EP3328629B1 EP3328629B1 (en) 2019-06-12

Family

ID=56411590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16738700.0A Active EP3328629B1 (en) 2015-07-31 2016-07-01 Device and method for securing an open bottom of a piece of tube

Country Status (3)

Country Link
EP (1) EP3328629B1 (en)
CN (1) CN108136708B (en)
WO (1) WO2017021077A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1561473B1 (en) * 1967-06-19 1971-08-26 Windmoeller & Hoelscher Device for raising and flattening cross bottoms on transversely conveyed plastic hose sections
DE102008017444B4 (en) * 2008-04-03 2011-07-28 Windmöller & Hölscher KG, 49525 Apparatus and method for the production of sacks from pieces of hose
CN201525145U (en) * 2009-11-04 2010-07-14 盐城宏景包装机械有限公司 Upper belt conveying device
CN201580016U (en) * 2009-12-31 2010-09-15 广州市国研机械设备制造有限公司 Retractable feed mechanism for clamping conveyer belts
ES2424952T3 (en) * 2010-10-14 2013-10-10 Starlinger & Co Gesellschaft M.B.H. Procedure and device for the configuration of open bottoms in final areas of tubular bag bodies
CN102673016A (en) * 2011-03-07 2012-09-19 上海艾录纸包装有限公司 Pressing device for improving adhering effect
CN204431810U (en) * 2014-11-28 2015-07-01 温州正博印刷机械有限公司 Hand bag forming machine and bag upender thereof

Also Published As

Publication number Publication date
EP3328629B1 (en) 2019-06-12
CN108136708A (en) 2018-06-08
CN108136708B (en) 2020-12-15
WO2017021077A1 (en) 2017-02-09

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