EP2059386A1 - Device and method for producing sacks of coated synthetic fabric - Google Patents

Device and method for producing sacks of coated synthetic fabric

Info

Publication number
EP2059386A1
EP2059386A1 EP07803105A EP07803105A EP2059386A1 EP 2059386 A1 EP2059386 A1 EP 2059386A1 EP 07803105 A EP07803105 A EP 07803105A EP 07803105 A EP07803105 A EP 07803105A EP 2059386 A1 EP2059386 A1 EP 2059386A1
Authority
EP
European Patent Office
Prior art keywords
bags
sacks
nip
bottoms
bag
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
EP07803105A
Other languages
German (de)
French (fr)
Other versions
EP2059386B1 (en
Inventor
Uwe Köhn
Siegfried Maneke
Christian HÄGER
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 EP2059386A1 publication Critical patent/EP2059386A1/en
Application granted granted Critical
Publication of EP2059386B1 publication Critical patent/EP2059386B1/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
    • 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
    • B31B70/006—Controlling; Regulating; Measuring; Safety measures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • B65H29/60—Article switches or diverters diverting the stream into alternative paths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/04—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable detecting, or responding to, presence of faulty articles
    • 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
    • B31B2150/0014—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
    • 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
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/72—Uniting opposed surfaces or edges; Taping by applying and securing strips or 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/741—Moistening; Drying; Cooling; Heating; Sterilizing

Definitions

  • the invention relates to an apparatus and a method for producing bags made of coated plastic fabric.
  • Such bags have been known for some time.
  • the starting material for these bags is usually a tubular fabric, which is produced in round looms from stretched plastic tapes.
  • the stretched plastic tapes which often contain polypropylene, have a very high tensile strength in the longitudinal direction.
  • the low tensile strength of the plastic tapes in their transverse direction does not matter because in a tissue many tapes in the longitudinal and transverse directions of the subsequent bag run, so well absorb the forces in all directions.
  • the fabric may also be a flat fabric, which will later be added to form a tube to form a longitudinal seam.
  • the fabric is often coated with another plastic material in order to be able to connect different parts of the hose or of the later hose pieces to one another by means of a joining method without affecting the stretched plastic tapes.
  • a joining method is hot air sealing, in which the surfaces to be joined are fused and then brought into contact, so that the surfaces form a firm connection after cooling.
  • only the coating is heated, as the strength of the plastic tapes deteriorates when exposed to heat. In reality, one can However, some heating of the plastic tapes usually can not be avoided.
  • such compounds may also be prepared by adding an adhesive or liquified plastic. In particular, it makes sense to introduce between the surfaces to be bonded the same plastic, but in heated and liquefied form, with which the surfaces are already coated.
  • the patent DE 195 02 251 discloses a device which is supplied from a hose isolated pieces of hose and transported transversely within the device in the transport direction (x).
  • the pieces of hose lie on a table. In the plane of the table bottoms are formed in the bottom opening station to the hose pieces.
  • the trays are closed, whereby components of the trays are permanently connected to one another in the manner described above. It is possible to incorporate a valve in the ground to allow the subsequent filling of the bag.
  • the object of the present invention is therefore to propose an apparatus and a method with which the sorting out of defective sacks can be carried out more cost-effectively and reliably.
  • a combination of at least one movable deflection means is provided, with which certain bags can be discharged from the sequence of bags produced and from an arrangement of the switch at a distance from the nip, which is greater than the width of a manufactured bag.
  • the "certain sacks" may be the sacks identified as defective.
  • an essential aspect of the invention is now to arrange the deflection means at a sufficient distance from the last nip, so that the bags can cool sufficiently before they pass through the deflection.
  • the heat applied by the hot air which is introduced into the bag material for bottom closure and for application of the ground cover sheet, makes the material very soft and flexible. This laxity of the material is retained for a certain time after production.
  • the deflection means at least as far away from the last nip that the sack has completely left this nip before it hits the deflection means with its leading edge.
  • the material of which it is composed has cooled sufficiently and thus solidifies again, so that its deflection from the direction of transport in another direction can reliably take place.
  • the distance between the nip and the deflection can also be greater than a bag width to allow further cooling.
  • the lobed bag material it is also advantageous to promote the bags between the nip and deflection with at least one double belt conveyor, wherein a bag is then clamped between the two Lasttrumen of the upper and lower conveyor.
  • the strands are part of circulating conveyors such as belts.
  • other funding are conceivable, such as special holding means which are attached to rotating chains.
  • the bags are conveyed over a flat surface, for example via a table.
  • the surface of the table is advantageously arranged horizontally.
  • the upper run of the circulating transport of the upper part of the double belt conveyor at a high distance to the lower run. This should be at least 40cm, especially at least 60 cm. In this free area then, for example, aggregates that promote the cooling process of the bags, such as fans, can be arranged.
  • bags of various lengths can be produced in devices for producing bags of coated plastic fabric, it is particularly advantageous to provide two parallel double-belt conveyors, at least one of which is displaceable transversely to the transport direction of the bags.
  • the strands of the conveyor can seize the bags near the bottoms, where during the manufacturing process a particularly high heat input occurs and the bags are particularly limp.
  • the newly added compared to the devices of the prior art cooling path and deflection means that a device according to the invention builds longer.
  • it is provided to supply the defect-free sacks to a further transport device, which then removes the sacks in a direction which runs in the direction of the longitudinal axes of the sacks.
  • cooling elements can also be provided between the nip and the deflecting element when the upper strand and the lower strand are not widely spaced.
  • the cooling elements may have various configurations, such as lines through which a liquid or gaseous coolant flows, which then preferably consist of metal.
  • Particularly advantageous is the arrangement of aggregates, which act on the bags from above with cooling air. This cooling air can then absorb and dissipate heat from the bags.
  • an error detection element is arranged between the nip and the deflecting element.
  • the error detection element may include an optical sensor that records images from the bags. These images or parts of the images can then be compared in a computing and control unit with other data, such as target data of the bag. However, such further data may also be images or parts of images taken from the same or from another sack. Detects the computing and control unit due to the comparison of a bag as faulty, it can control the deflector accordingly, so that the bag is discharged.
  • the invention is in addition to the device described also a method according to claim 8.
  • FIG. 1 is a side view of components of the device according to the invention.
  • FIG. 2 is a plan view of the components shown in FIG.
  • Fig. 1 shows components of a device 1 according to the invention, which are arranged seen in the transport direction x behind the rollers 2 and 3. To understand the function of these rollers, reference is made to the patent application DE 101 04 002 of the Applicant. In the figures shown there, these rollers carry the reference numerals 6 and 4.
  • the connecting line between the axes of rotation of the rollers 2 and 3 is substantially vertical to the transport direction x of the bags (ie in the drawn direction y).
  • the rollers 2 and 3 Form the nip for pressing the ground cover sheets with the bottoms of the bags, as already described above.
  • the bag 4 is shown by way of example.
  • the bag 4 is transported by the transport belts 5 and 6 of the double belt conveyor 7 and rests on the surface of the table 8.
  • the upper strand 9 of the conveyor belt 6, which is generally referred to as an empty strand, is greatly spaced from the lower strand 10 in the direction y.
  • a deflection means 11 is arranged behind the double belt conveyor.
  • This comprises at least one lifting cylinder 12, preferably a compressed air cylinder, with which a plunger 13 in the direction of the double arrow A can be raised.
  • the plunger In its raised position, the plunger is introduced into the conveying path and deflects the bag from the original transport direction x.
  • the bag slides, further advanced by the double belt conveyor 7, along the plunger 13 until it enters the inlet gap of the double belt conveyor 14 and is gripped by this and fed to a collecting or transporting device.
  • the plunger 13 releases the further transport path in the transport direction x, so that the bag 4 can reach the transport device 15, which removes the bag in the direction z, which runs essentially at right angles to the original transport direction x ,
  • the lifting movement of the plunger 13 can be triggered manually when the operator detects a faulty bag 4.
  • the table 8 may comprise a transparent surface, are arranged under the lighting means. Thus, they illuminate the bag 4, so that the operating personnel who inspected the bag from above can better recognize production and / or material defects compared to the visual inspection that was previously carried out on machines of the prior art.
  • the distance from the lower run 10 arranged Obertrum 9 facilitates the observation of the bags, since it provides sufficient space for this.
  • FIG. 2 illustrates the already described situation in the plan view.
  • the comparison of FIGS. 1 and 2 shows that the rollers 2 and 3 are each in individual sections
  • Rollers 2 and 2 'and 3 and 3' are divided, each with only the
  • Sacks 4 are folded. In this way, the heat introduced into the bottoms 16 during manufacture radiates substantially upwards.
  • the belts 6 and 6 'detect the bag 4 in its end, but without coming into contact with the plates 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

The invention relates to a device (1) for producing sacks (4) of coated synthetic fabric, comprising conveyor means (7), wherein tubular pieces or sacks (4) can be transported transversely to the longitudinal axis (L) thereof in the direction of transport (x), further comprising devices for forming bottoms to the ends of the tubular pieces in order to form sacks. Furthermore, the invention relates to a device for sealing bottom sealing lids onto the bottoms of the sacks, wherein at least temperature control means are provided, such that heat can be applied to the bottoms and/or the bottom sealing lids, and wherein two rollers (2, 3) forming a nip are provided, pressing the bottom sealing lids and the bottoms (16) of the sacks (4) together. Behind the nip, viewed in the direction of transport (x), at least one displaceable deflecting means (11) is provided, with which certain sacks from the line of sacks (4) can be diverted. The deflecting means (11) is disposed in the direction of transport (x) at a distance (D) having at least the width (SB) of the produced sacks (4) from the nap.

Description

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Herstellung von Säcken aus beschichtetem Kunststoffgewebe. The invention relates to an apparatus and a method for producing bags made of coated plastic fabric.
Solche Säcke sind seit längerer Zeit bekannt. Das Ausgangsmaterial für diese Säcke ist in der Regel ein schlauchförmiges Gewebe, welches in Rundwebstühlen aus gereckten Kunststoffbändchen hergestellt wird. Die gereckten Kunststoffbändchen, die häufig Polypropylen enthalten, besitzen eine sehr hohe Reißfestigkeit in Längsrichtung. Die geringe Reißfestigkeit der Kunststoffbändchen in ihrer Querrichtung spielt keine Rolle, da in einem Gewebe viele Bändchen in Längs- und Querrichtung des späteren Sackes verlaufen, die so die Kräfte in allen Richtungen gut aufnehmen.Such bags have been known for some time. The starting material for these bags is usually a tubular fabric, which is produced in round looms from stretched plastic tapes. The stretched plastic tapes, which often contain polypropylene, have a very high tensile strength in the longitudinal direction. The low tensile strength of the plastic tapes in their transverse direction does not matter because in a tissue many tapes in the longitudinal and transverse directions of the subsequent bag run, so well absorb the forces in all directions.
Selbstverständlich kann das Gewebe auch ein Flachgewebe sein, welches erst später unter Ausbildung einer Längsnaht zu einem Schlauch zugelegt wird.Of course, the fabric may also be a flat fabric, which will later be added to form a tube to form a longitudinal seam.
Das Gewebe wird oft mit einem weiteren Kunststoffmaterial beschichtet, um verschiedene Teile des Schlauches oder der späteren Schlauchstücke mit einander durch ein Fügeverfahren verbinden zu können, ohne dabei die gereckten Kunststoffbändchen in Mitleidenschaft zu ziehen. Ein solches Fügeverfahren ist das Heißluftsiegeln, bei dem die zu verbindenden Oberflächen angeschmolzen und anschließend in Kontakt gebracht werden, so dass die Oberflächen nach dem Abkühlen eine feste Verbindung eingehen. Im Idealfall wird dabei nur die Beschichtung erwärmt, da bei Wärmeeinwirkung die Festigkeit der Kunststoffbändchen nachlässt. In der Realität lässt sich eine gewisse Erwärmung der Kunststoffbändchen aber meist nicht vermeiden. Zusätzlich oder alternativ können solche Verbindungen auch durch Hinzufügen eines Klebstoffes oder eines verflüssigten Kunststoffes hergestellt werden. Insbesondere bietet es sich an, zwischen die zu verklebenden Oberflächen den gleichen Kunststoff, allerdings in erwärmter und verflüssigter Form, einzubringen, mit welchem die Oberflächen bereits beschichtet sind.The fabric is often coated with another plastic material in order to be able to connect different parts of the hose or of the later hose pieces to one another by means of a joining method without affecting the stretched plastic tapes. One such method of joining is hot air sealing, in which the surfaces to be joined are fused and then brought into contact, so that the surfaces form a firm connection after cooling. Ideally, only the coating is heated, as the strength of the plastic tapes deteriorates when exposed to heat. In reality, one can However, some heating of the plastic tapes usually can not be avoided. Additionally or alternatively, such compounds may also be prepared by adding an adhesive or liquified plastic. In particular, it makes sense to introduce between the surfaces to be bonded the same plastic, but in heated and liquefied form, with which the surfaces are already coated.
Bestandteile von Vorrichtungen zum Herstellen von Säcken aus den beschriebenen Gewebeschläuchen sind bereits aus verschiedenen Veröffentlichungen bekannt. So offenbart die Patentschrift DE 195 02 251 eine Vorrichtung, der von einem Schlauch vereinzelte Schlauchstücke zugeführt und innerhalb der Vorrichtung quer liegend in Transportrichtung (x) transportiert werden. Dabei liegen die Schlauchstücke auf einem Tisch auf. In der Ebene des Tisches werden in der Bodenöffnungsstation an die Schlauchstücke Böden angeformt.Components of devices for producing sacks from the fabric tubes described are already known from various publications. Thus, the patent DE 195 02 251 discloses a device which is supplied from a hose isolated pieces of hose and transported transversely within the device in the transport direction (x). The pieces of hose lie on a table. In the plane of the table bottoms are formed in the bottom opening station to the hose pieces.
In einer der Bodenöffnungsstation folgenden Bearbeitungsstation werden die Böden verschlossen, wobei Bestandteile der Böden in der oben beschriebenen Weise dauerhaft miteinander verbunden werden. Dabei ist es möglich, ein Ventil in den Boden einzuarbeiten, um die spätere Befüllung des Sacks zu ermöglichen.In a processing station following the bottom opening station, the trays are closed, whereby components of the trays are permanently connected to one another in the manner described above. It is possible to incorporate a valve in the ground to allow the subsequent filling of the bag.
Aus der Patentanmeldung DE 101 04 002 ist eine weitere Bearbeitungsstationen bekannt, in denen verstärkende Bodendeckblätter auf die fertigen Böden aufgebracht werden. Ein wesentlicher Bestandteil dieser Station ist ein Zylinderpaar, welches einen Walzenspalt bildet, durch welchen ein Sack hindurch läuft und die Bodendeckblätter mit den Böden, auf weiche sie aufgebracht wurden, verpresst. Zuvor werden die Oberflächen der Böden und der Bodendeckblätter vor allem mittels Heißluft derart erwärmt, dass die Oberflächen angeschmolzen sind, wenn sich Böden und Bodendeckblätter berühren. Dieser Vorgang ist unter dem Begriff „siegeln" bekannt. In der Vorrichtung können auch weitere oder andere Heizmittel vorgesehen sein, die für eine Temperierung der Oberflächen sorgen. Bei bekannten Vorrichtungen zur Herstellung der beschriebenen Säcke werden diese nach dem Durchlaufen des letzten Walzenspaltes, d. h. nach dem Aufbringen der Bodendeckblätter, mit einer Fördereinrichtung abtransportiert, händisch gestapelt und gegebenenfalls zum Versand verpackt. Dabei werden die einzelnen Säcke durch das Personal auf Herstellungs- und/oder Materialfehler untersucht. Fehlerhafte Säcke werden somit manuell als Ausschuss aussortiert, was sehr aufwändig und damit teuer ist.From the patent application DE 101 04 002 another processing stations is known in which reinforcing ground cover sheets are applied to the finished floors. An integral part of this station is a pair of cylinders which form a nip through which a sack passes and compresses the ground cover sheets with the bottoms to which they have been applied. Previously, the surfaces of the floors and the ground cover sheets are primarily heated by means of hot air so that the surfaces are melted when touching floors and ground cover sheets. This process is known by the term "sealing." In the device, other or other heating means can be provided, which provide for a temperature control of the surfaces. In known devices for the production of the bags described these are transported after passing through the last nip, ie after the application of the ground cover sheets, with a conveyor, manually stacked and optionally packed for shipping. The individual bags are examined by the staff for manufacturing and / or material defects. Faulty bags are thus sorted out manually as a committee, which is very complex and therefore expensive.
Die Aufgabe der vorliegenden Erfindung ist es daher, eine Vorrichtung und ein Verfahren vorzuschlagen, mit welchen das Aussortieren von fehlerhaften Säcken kostengünstiger und zuverlässig erfolgen kann.The object of the present invention is therefore to propose an apparatus and a method with which the sorting out of defective sacks can be carried out more cost-effectively and reliably.
Diese Aufgabe wird durch eine Vorrichtung mit den kennzeichnenden Merkmalen des Anspruchs 1 und durch ein Verfahren mit den kennzeichnenden Merkmalen des Anspruchs 8 gelöst.This object is achieved by a device having the characterizing features of claim 1 and by a method having the characterizing features of claim 8.
Demnach ist eine Kombination aus zumindest einem bewegbaren Umlenkmittel vorgesehen, mit welchem bestimmte Säcke aus der Folge der hergestellten Säcke ausgeschleust werden können und aus einer Anordnung der Weiche in einem Abstand zu dem Walzenspalt, der größer ist als die Breite eines hergestellten Sackes. Die „bestimmten Säcke" können dabei die als fehlerhaft erkannten Säcke sein.Accordingly, a combination of at least one movable deflection means is provided, with which certain bags can be discharged from the sequence of bags produced and from an arrangement of the switch at a distance from the nip, which is greater than the width of a manufactured bag. The "certain sacks" may be the sacks identified as defective.
Mit der Anordnung eines Umlenkmittels hinter dem letzten Walzenspalt ist es möglich, fehlerhafte Säcke unmittelbar nach der Produktion auszuschleusen. Zwar ist eine visuelle Kontrolle der Säcke weiterhin durchführbar, um fehlerhafte Säcke von fehlerfreien Säcken zu unterscheiden, das Aussortieren jedoch erfolgt nun nicht mehr manuell.With the arrangement of a deflection behind the last nip, it is possible to eject defective bags immediately after production. Although visual inspection of the bags is still feasible to distinguish faulty bags from error-free bags, sorting out is no longer manual.
Ein wesentlicher Aspekt der Erfindung ist aber nun, das Umlenkmittel in einem ausreichenden Abstand zum letzten Walzenspalt anzuordnen, so dass die Säcke ausreichend auskühlen können, bevor sie das Umlenkmittel passieren. Die von der Heißluft aufgebrachte Wärme, die in das Sackmaterial zur Bodenschließung und zur Aufbringung des Bodendeckblatts eingebracht wird, führt dazu, dass das Material sehr weich und flexibel wird. Diese Lappigkeit des Materials bleibt eine gewisse Zeit nach der Herstellung erhalten. Dies führt jedoch zu Problemen, wenn ein Sack direkt nach der Produktion aus dem bis dahin ebenen Transportweg abgelenkt werden soll. So kann es vorkommen, dass der betreffende Sack sich an dem Umlenkmittel aufrollt oder anderweitig verkantet, so dass er nicht mehr weitertransportiert werden kann und einen Produktstau verursacht. Dies führt unweigerlich zum Ausfall der kompletten Vorrichtung zur Herstellung von Säcken. Es hat sich als vorteilhaft erwiesen, das Umlenkmittel mindestens so weit von dem letzten Walzenspalt entfernt anzuordnen, dass der Sack diesen Walzenspalt vollständig verlassen hat, bevor er mit seiner Vorderkante auf das Umlenkmittel trifft. Wenn der Sack diese Strecke zurückgelegt hat, ist das Material, aus dem er besteht, ausreichend abgekühlt und damit wieder verfestigt, so dass sein Ablenken aus der Transportrichtung in eine andere Richtung zuverlässig erfolgen kann. Selbstverständlich kann die Strecke zwischen dem Walzenspalt und dem Umlenkmittel auch größer als eine Sackbreite sein, um eine weitere Abkühlung zu ermöglichen. Versuche haben ergeben, dass bei einem Abstand zwischen Walzenspalt und dem Umlenkmittel von drei Sackbreiten in jedem Fall eine ausreichende Abkühlung eingetreten ist, um die beschriebenen Störungen zu vermeiden. Daher ist es besonders vorteilhaft, diesen Abstand in der erfindungsgemäßen Vorrichtung vorzusehen.However, an essential aspect of the invention is now to arrange the deflection means at a sufficient distance from the last nip, so that the bags can cool sufficiently before they pass through the deflection. The heat applied by the hot air, which is introduced into the bag material for bottom closure and for application of the ground cover sheet, makes the material very soft and flexible. This laxity of the material is retained for a certain time after production. However, this leads to problems when a bag is to be deflected immediately after production from the hitherto level transport. Thus, it may happen that the bag in question rolls up on the deflection means or otherwise tilted, so that it can no longer be transported and causes a product jam. This inevitably leads to failure of the complete bag making apparatus. It has proved to be advantageous to arrange the deflection means at least as far away from the last nip that the sack has completely left this nip before it hits the deflection means with its leading edge. When the bag has traveled this distance, the material of which it is composed has cooled sufficiently and thus solidifies again, so that its deflection from the direction of transport in another direction can reliably take place. Of course, the distance between the nip and the deflection can also be greater than a bag width to allow further cooling. Experiments have shown that at a distance between the nip and the deflection of three sack widths in each case sufficient cooling has occurred to avoid the described disturbances. Therefore, it is particularly advantageous to provide this distance in the device according to the invention.
Wegen des lappigen Sackmaterials ist es weiterhin vorteilhaft, die Säcke zwischen Walzenspalt und Umlenkmittel mit zumindest einem Doppelbandförderer zu fördern, wobei ein Sack dann zwischen den beiden Lasttrumen des oberen bzw. des unteren Förderers klemmend gehalten wird. Die Trumen sind dabei Bestandteile von umlaufenden Fördermitteln wie etwa Riemen. Jedoch sind auch andere Fördermittel denkbar, etwa spezielle Haltemittel, die an umlaufende Ketten angebracht sind.Because of the lobed bag material, it is also advantageous to promote the bags between the nip and deflection with at least one double belt conveyor, wherein a bag is then clamped between the two Lasttrumen of the upper and lower conveyor. The strands are part of circulating conveyors such as belts. However, other funding are conceivable, such as special holding means which are attached to rotating chains.
Es ist besonders vorteilhaft, wenn die Säcke über eine ebene Fläche, beispielsweise über einen Tisch, gefördert werden. Auf diese Weise erhalten die Säcke eine ganzflächige Unterstützung. Dabei ist die Oberfläche des Tisches vorteilhafterweise horizontal angeordnet. In einer vorteilhaften Weiterbildung der Erfindung weist das obere Trum des umlaufenden Transportmittels des oberen Teils des Doppelbandförderers einen hohen Abstand zum unteren Trum auf. Dieser sollte mindestens 40cm, insbesondere mindestens 60 cm betragen. In diesem freien Bereich können dann beispielsweise Aggregate, die den Auskühlprozess der Säcke fördern, wie etwa Lüfter, angeordnet werden.It is particularly advantageous if the bags are conveyed over a flat surface, for example via a table. In this way, the bags get a full-scale support. The surface of the table is advantageously arranged horizontally. In an advantageous embodiment of the invention, the upper run of the circulating transport of the upper part of the double belt conveyor at a high distance to the lower run. This should be at least 40cm, especially at least 60 cm. In this free area then, for example, aggregates that promote the cooling process of the bags, such as fans, can be arranged.
Da in Vorrichtungen zum Herstellen von Säcken aus beschichtetem Kunststoffgewebe Säcke verschiedener Länge produziert werden können, ist es von besonderem Vorteil, zwei parallele Doppelbandförderer vorzusehen, von denen mindestens einer quer zur Transportrichtung der Säcke verschiebbar ist.Since bags of various lengths can be produced in devices for producing bags of coated plastic fabric, it is particularly advantageous to provide two parallel double-belt conveyors, at least one of which is displaceable transversely to the transport direction of the bags.
Auf diese Weise können die Trume der Förderer die Säcke nahe der Böden ergreifen, wo es bei dem Herstellungsvorgang zu einem besonders hohen Wärmeeintrag kommt und die Säcke hier besonders lappig sind.In this way, the strands of the conveyor can seize the bags near the bottoms, where during the manufacturing process a particularly high heat input occurs and the bags are particularly limp.
Die gegenüber den Vorrichtungen des Standes der Technik neu hinzugefügte Kühlstrecke und Umlenkmittel führen dazu, dass eine erfindungsgemäße Vorrichtung länger baut. Um den zusätzlichen Raumbedarf zu kompensieren, ist vorgesehen, die fehlerfreien Säcke einer weiteren Transportvorrichtung zuzuführen, die die Säcke dann in einer Richtung abtransportiert, die in Richtung der Längsachsen der Säcke verläuft.The newly added compared to the devices of the prior art cooling path and deflection means that a device according to the invention builds longer. In order to compensate for the additional space requirement, it is provided to supply the defect-free sacks to a further transport device, which then removes the sacks in a direction which runs in the direction of the longitudinal axes of the sacks.
Der Platz zwischen dem Untertrum und dem Obertrum des oberen Teils des Doppelbandförderers wird in einer vorteilhaften Weiterbildung der Erfindung dazu genutzt, um Kühlelemente anzuordnen. Selbstverständlich können zwischen dem Walzenspalt und dem Umlenkelement auch dann Kühlelemente vorgesehen werden, wenn Obertrum und Untertrum nicht stark beabstandet sind. Die Kühlelemente können verschiedene Ausgestaltungen aufweisen, wie etwa von einem flüssigen oder gasförmigen Kühlmittel durchströmte Leitungen, die dann vorzugsweise aus Metall bestehen. Besonders vorteilhaft ist die Anordnung von Aggregaten, die von oben her die Säcke mit Kühlluft beaufschlagen. Diese Kühlluft kann dann Wärme von den Säcken aufnehmen und abführen. In einer weiteren vorteilhaften Weiterbildung der Erfindung ist zwischen dem Walzenspalt und dem Umlenkelement ein Fehlererkennungselement angeordnet. Dieses kann mit dem Umlenkelement gekoppelt sein, so dass bei einem als fehlerhaft erkannten Sack das Umlenkelement diesen Sack aus der Folge der Säcke ausschleust. Das Fehlererkennungselement kann einen optischen Sensor umfassen, der Bilder von den Säcken aufzeichnet. Diese Bilder oder Teile der Bilder können dann in einer Rechen- und Steuereinheit mit weiteren Daten, beispielsweise Solldaten des Sackes, verglichen werden. Solche weiteren Daten können aber auch Bilder oder Teile von Bildern sein, die vom gleichen oder von einem anderen Sack aufgenommen wurden. Erkennt die Rechen- und Steuereinheit aufgrund des Vergleichs einen Sack als fehlerhaft, so kann sie an das Umlenkelement entsprechend steuern, so dass der Sack ausgeschleust wird.The space between the lower run and the upper run of the upper part of the double belt conveyor is used in an advantageous development of the invention to arrange cooling elements. Of course, cooling elements can also be provided between the nip and the deflecting element when the upper strand and the lower strand are not widely spaced. The cooling elements may have various configurations, such as lines through which a liquid or gaseous coolant flows, which then preferably consist of metal. Particularly advantageous is the arrangement of aggregates, which act on the bags from above with cooling air. This cooling air can then absorb and dissipate heat from the bags. In a further advantageous embodiment of the invention, an error detection element is arranged between the nip and the deflecting element. This can be coupled to the deflecting element, so that in the case of a bag recognized as being defective, the deflecting element ejects this bag out of the sequence of the bags. The error detection element may include an optical sensor that records images from the bags. These images or parts of the images can then be compared in a computing and control unit with other data, such as target data of the bag. However, such further data may also be images or parts of images taken from the same or from another sack. Detects the computing and control unit due to the comparison of a bag as faulty, it can control the deflector accordingly, so that the bag is discharged.
Gegenstand der Erfindung ist neben der beschriebenen Vorrichtung auch ein Verfahren nach Anspruch 8.The invention is in addition to the device described also a method according to claim 8.
Weitere Ausführungsbeispiele der Erfindung gehen aus der gegenständlichen Beschreibung und den Ansprüchen hervor. Die einzelnen Figuren zeigen:Further embodiments of the invention will become apparent from the description and the claims. The individual figures show:
Fig. 1 Seitenansicht auf Bestandteile der erfindungsgemäßen Vorrichtung Fig. 2 Aufsicht auf die in der Fig. 1 gezeigten Bestandteile1 is a side view of components of the device according to the invention. FIG. 2 is a plan view of the components shown in FIG
Fig. 1 zeigt Bestandteile einer erfindungsgemäßen Vorrichtung 1 , die in der Transportrichtung x gesehen hinter den Walzen 2 und 3 angeordnet sind. Zum Verständnis der Funktion dieser Walzen wird auf die Patentanmeldung DE 101 04 002 der Anmelderin verwiesen. In den dort gezeigten Figuren tragen diese Walzen die Bezugszeichen 6 und 4.Fig. 1 shows components of a device 1 according to the invention, which are arranged seen in the transport direction x behind the rollers 2 and 3. To understand the function of these rollers, reference is made to the patent application DE 101 04 002 of the Applicant. In the figures shown there, these rollers carry the reference numerals 6 and 4.
Wie aus der Fig. 1 zu erkennen ist, verläuft die Verbindungslinie zwischen den Drehachsen der Walzen 2 und 3 im Wesentlichen vertikal zu Transportrichtung x der Säcke (also in der eingezeichneten Richtung y). Die Walzen 2 und 3 bilden den Walzenspalt zum Verpressen der Bodendeckblätter mit den Böden der Säcke, wie es bereits eingangs beschrieben wurde. Von den Säcken ist exemplarisch der Sack 4 dargestellt.As can be seen from Fig. 1, the connecting line between the axes of rotation of the rollers 2 and 3 is substantially vertical to the transport direction x of the bags (ie in the drawn direction y). The rollers 2 and 3 Form the nip for pressing the ground cover sheets with the bottoms of the bags, as already described above. Of the bags, the bag 4 is shown by way of example.
Der Sack 4 wird von den Transportriemen 5 und 6 des Doppelbandförderers 7 transportiert und liegt dabei auf der Oberfläche des Tisches 8 auf. Das Obertrum 9 des Transportriemens 6, das allgemein als Leertrum bezeichnet wird, ist gegenüber dem Untertrum 10 in Richtung y stark beabstandet.The bag 4 is transported by the transport belts 5 and 6 of the double belt conveyor 7 and rests on the surface of the table 8. The upper strand 9 of the conveyor belt 6, which is generally referred to as an empty strand, is greatly spaced from the lower strand 10 in the direction y.
In Transportrichtung x gesehen ist hinter dem Doppelbandförderer ein Umlenkmittel 1 1 angeordnet. Dieses umfasst zumindest einen Hubzylinder 12, vorzugsweise einen Druckluftzylinder, mit welchem ein Stößel 13 in Richtung des Doppelpfeils A anhebbar ist. In seiner angehobenen Stellung ist der Stößel in den Förderweg eingebracht und lenkt den Sack aus der ursprünglichen Transportrichtung x ab. Der Sack gleitet, weiterhin vorgeschoben durch den Doppelbandförderer 7, an dem Stößel 13 entlang, bis er in den Einlaufspalt des Doppelbandförderers 14 gelangt und von diesem ergriffen und einer Sammeloder Transporteinrichtung zugeführt wird.Seen in the transport direction x, a deflection means 11 is arranged behind the double belt conveyor. This comprises at least one lifting cylinder 12, preferably a compressed air cylinder, with which a plunger 13 in the direction of the double arrow A can be raised. In its raised position, the plunger is introduced into the conveying path and deflects the bag from the original transport direction x. The bag slides, further advanced by the double belt conveyor 7, along the plunger 13 until it enters the inlet gap of the double belt conveyor 14 and is gripped by this and fed to a collecting or transporting device.
In seiner dargestellten, eingezogenen Position gibt der Stößel 13 den weiteren Transportweg in Transportrichtung x frei, so dass der Sack 4 auf die Transportvorrichtung 15 gelangen kann, welches den Sack in Richtung z, welche im Wesentlichen im rechten Winkel zur ursprünglichen Transportrichtung x verläuft, abfördert.In its illustrated retracted position, the plunger 13 releases the further transport path in the transport direction x, so that the bag 4 can reach the transport device 15, which removes the bag in the direction z, which runs essentially at right angles to the original transport direction x ,
Die Hubbewegung des Stößels 13 kann manuell ausgelöst werden, wenn das Bedienpersonal einen fehlerhaften Sack 4 erkennt. Um das Erkennen eines solchen Sackes zu erleichtern, kann der Tisch 8 eine transparente Oberfläche umfassen, unter der Leuchtmittel angeordnet sind. Diese durchleuchten also den Sack 4, so dass das Bedienpersonal, welches den Sack von oben begutachtet, Produktions- und/oder Materialfehler gegenüber der visuellen Begutachtung, die bisher an Maschinen des Standes der Technik durchgeführt wurde, besser erkennen kann. Das mit Abstand zum Untertrum 10 angeordnete Obertrum 9 erleichtert dabei die Beobachtung der Säcke, da es einen hierfür ausreichenden Raum bereitstellt.The lifting movement of the plunger 13 can be triggered manually when the operator detects a faulty bag 4. In order to facilitate the detection of such a bag, the table 8 may comprise a transparent surface, are arranged under the lighting means. Thus, they illuminate the bag 4, so that the operating personnel who inspected the bag from above can better recognize production and / or material defects compared to the visual inspection that was previously carried out on machines of the prior art. The distance from the lower run 10 arranged Obertrum 9 facilitates the observation of the bags, since it provides sufficient space for this.
Die Fig. 2 stellt die bereits beschriebene Situation in der Aufsicht dar. Der Vergleich der Figuren 1 und 2 zeigt, dass die Walzen 2 und 3 jeweils in einzelneFIG. 2 illustrates the already described situation in the plan view. The comparison of FIGS. 1 and 2 shows that the rollers 2 and 3 are each in individual sections
Walzen 2 und 2' bzw. 3 und 3' aufgeteilt sind, die jeweils nur mit denRollers 2 and 2 'and 3 and 3' are divided, each with only the
Endbereichen des Sackes 4 in Kontakt treten. Weiterhin ist durch den Vergleich der beiden Figuren erkennbar, dass die Böden 16 in die Transportebene derEnd regions of the bag 4 come into contact. Furthermore, it can be seen by comparing the two figures that the floors 16 in the transport plane of the
Säcke 4 umgeklappt sind. Auf diese Weise strahlt die bei der Herstellung in die Böden 16 eingebrachte Wärme im Wesentlichen nach oben ab. Die Riemen 6 und 6' erfassen den Sack 4 in seinen Endbereich, jedoch ohne dabei in Kontakt mit den Böden 16 zu treten. Sacks 4 are folded. In this way, the heat introduced into the bottoms 16 during manufacture radiates substantially upwards. The belts 6 and 6 'detect the bag 4 in its end, but without coming into contact with the plates 16.

Claims

Patentansprüche claims
1. Vorrichtung (1 ) zur Herstellung von Säcken (4) aus beschichtetem Kunststoffgewebe, umfassend:Device (1) for producing sacks (4) of coated plastic fabric, comprising:
Transporteinrichtungen (7), mit welcher Schlauchstücke beziehungsweise Säcke (4) quer zu ihren Längsachsen (L) in der Transportrichtung (x) transportierbar sind,Transport devices (7) with which pieces of tubing or sacks (4) can be transported transversely to their longitudinal axes (L) in the transport direction (x),
Einrichtungen zum Anformen von Böden an die Enden der Schlauchstücke, um Säcke zu bilden,Means for molding floors at the ends of the pieces of tubing to form bags;
Einrichtungen zum Aufsiegeln von Bodendeckblättern auf die Böden der Säcke, in denen zumindest Temperiermittel vorgesehen sind, mit welchen die Böden und/oder die Bodendeckblätter mit Wärme beaufschlagbar sind, und in der zwei einen Walzenspalt bildende Walzen (2,3) vorgesehen sind, mit welchen die Bodendeckblätter und die Böden (16) der Säcke (4) verpressbar sind, dadurch gekennzeichnet, dass in Transportrichtung (x) gesehen hinter dem Walzenspalt zumindest ein bewegbares Umlenkmittel (11 ) vorgesehen ist, mit welchem bestimmte Säcke aus der Folge der Säcke ausschleusbar sind, und dass das Umlenkmittel (1 1 ) in Transportrichtung (x) in einem Abstand (D) von mindestens einer Breite (SB) des hergestellten Sacks von dem Walzenspalt angeordnet ist.Means for sealing bottom cover sheets on the bottoms of the sacks, in which at least tempering means are provided, with which the bottoms and / or the bottom cover sheets can be acted upon with heat, and in which two rollers forming a nip (2,3) are provided, with which the bottom cover sheets and the bottoms (16) of the bags (4) are compressible, characterized in that seen in the transport direction (x) behind the nip at least one movable deflection means (11) is provided, with which certain bags from the sequence of sacks can be discharged in that the deflection means (11) is arranged in the transporting direction (x) at a distance (D) of at least one width (S B ) of the produced bag from the nip.
2. Vorrichtung (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass das Umlenkmittel (1 1 ) in Transportrichtung (x) in einem Abstand (D) von mindestens einer dreifachen Breite (SB) eines hergestellten Sacks von dem Walzenspalt angeordnet ist.2. Device (1) according to claim 1, characterized in that the deflection means (1 1) in the transport direction (x) at a distance (D) of at least a triple width (S B ) of a manufactured bag from the nip is arranged.
3. Vorrichtung (1 ) nach einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass die Säcke (4) zwischen dem Walzenspalt und dem Umlenkmittel (1 1 ) von zumindest einem Doppelbandförderer (7) förderbar ist, welcher mindestens zwei umlaufende Transportmittel (5,6) wie etwa Riemen umfasst.3. Device (1) according to any one of the preceding claims, characterized in that the bags (4) between the nip and the deflection means (1 1) of at least one double belt conveyor (7) can be conveyed, which at least two circulating transport means (5,6) such as belts.
4. Vorrichtung (1 ) nach dem vorstehenden Anspruch, dadurch gekennzeichnet, dass das obere Trum (9) (Leertrum) des mindestens einen oberen umlaufenden Transportmittels (6) zum unteren Trum (10) einen Abstand von mindestens 40 cm aufweist.4. Device (1) according to the preceding claim, characterized in that the upper strand (9) (empty strand) of the at least one upper circulating transport means (6) to the lower run (10) has a distance of at least 40 cm.
5. Vorrichtung (1 ) nach einem der beiden vorstehenden Ansprüche, dadurch gekennzeichnet, dass das obere Trum (9) des mindestens einen oberen umlaufenden Transportmittels (6) zum unteren Trum (10) einen Abstand von mindestens 60 cm aufweist.5. Device (1) according to one of the two preceding claims, characterized in that the upper run (9) of the at least one upper circulating transport means (6) to the lower run (10) has a distance of at least 60 cm.
6. Vorrichtung (1 ) nach einem der drei vorstehenden Ansprüche, dadurch gekennzeichnet, dass zwei parallel angeordnete Doppelbandförderer (7) vorgesehen sind, von denen zumindest einer quer zur Transportrichtung (x) verschiebbar ist.6. Device (1) according to one of the three preceding claims, characterized in that two parallel arranged double-belt conveyors (7) are provided, of which at least one transversely to the transport direction (x) is displaceable.
7. Vorrichtung (1 ) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zwischen dem Walzenspalt und dem Umlenkmittel ein Tisch (8) vorgesehen ist, über welchen die Säcke (4) geführt werden.7. Device (1) according to one of the preceding claims, characterized in that between the nip and the deflection means a table (8) is provided, via which the bags (4) are guided.
8. Vorrichtung (1 ) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die nicht aussortierten Säcke (4) in Transporthchtung (x) gesehen hinter dem Umlenkmittel einer weiteren Transporteinrichtung (15) zugeführt werden, welche die Säcke (4) in Richtung (z) ihrer Längsachse (L) abtransportiert.8. Device (1) according to one of the preceding claims, characterized in that the non-sorted sacks (4) seen in Transporthchtung (x) behind the deflection of a further transport means (15) are fed, which carries away the bags (4) in the direction (z) of its longitudinal axis (L).
9. Vorrichtung (1 ) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass9. Device (1) according to one of the preceding claims, characterized in that
Kühlelemente vorgesehen sind, die auf die sich zwischen dem Walzenspalt und dem Umlenkelement befindlichen Säcke (4) wirken.Cooling elements are provided which act on the located between the nip and the deflecting bags (4).
10. Vorrichtung (1 ) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zwischen dem Walzenspalt und dem Umlenkelement zumindest ein Fehlererkennungselement angeordnet ist, welches bei Erkennen eines Fehlers an einem Sacks (4) das Umlenkelement derart steuert, dass der fehlerhafte Sack aus der Folge der Säcke ausschleusbar ist.10. Device (1) according to one of the preceding claims, characterized in that between the nip and the deflecting element at least one error detection element is arranged, which controls the deflecting element upon detection of an error on a bag (4) such that the faulty bag from the As a result of the sacks is ausschleusbar.
1 1. Verfahren zur Herstellung von Säcken (4) aus beschichtetem Kunststoffgewebe, bei dem die Schlauchstücke beziehungsweise Säcke (4) quer zu ihren Längsachsen (L) in einer Transportrichtung (x) transportiert werden, bei dem Böden an die Enden der Schlauchstücke angeformt werden, um Säcke zu bilden, bei dem Bodendeckblätter auf die Böden der Säcke aufgesiegelt werden, wobei die Böden und/oder die Bodendeckblätter mit Wärme beaufschlagt werden, und bei dem die Bodendeckblätter und die Böden der Säcke in dem Walzenspalt zweier Walzen (2,3) verpresst werden, dadurch gekennzeichnet, dass nach dem Verpressen fehlerhafte Säcke aus der Folge der Säcke mittels eines Umlenkmittels aussortiert werden, und dass die Säcke nach dem Verlassen des Walzenspalts über eine Strecke (D), die größer ist als die Breite (SB) eines hergestellten Sackes (4), transportiert werden, bevor sie mit dem Umlenkmittel in Kontakt treten. 1 1. A method for producing bags (4) made of coated plastic fabric, in which the pieces of tubing or bags (4) transversely to their longitudinal axes (L) in a transport direction (x) are transported, are formed in the bottoms of the ends of the hose pieces in order to form bags in which ground cover sheets are sealed onto the bottoms of the bags, whereby the bottoms and / or the ground cover sheets are heated, and in which the bottom cover sheets and the bottoms of the bags in the nip of two rolls (2,3) be pressed, characterized in that after pressing defective bags are sorted out of the sequence of bags by means of a deflection, and that the bags after leaving the nip over a distance (D) which is greater than the width (S B ) of a fabricated bag (4) to be transported before they come into contact with the deflection.
EP07803105A 2006-09-02 2007-08-31 Device and method for producing sacks of coated synthetic fabric Active EP2059386B1 (en)

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DE102006041275A DE102006041275B4 (en) 2006-09-02 2006-09-02 Apparatus and method for producing bags of coated plastic fabric
PCT/EP2007/059100 WO2008028867A1 (en) 2006-09-02 2007-08-31 Device and method for producing sacks of coated synthetic fabric

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Also Published As

Publication number Publication date
EP2059386B1 (en) 2010-04-28
CN101511574A (en) 2009-08-19
CN101511574B (en) 2011-11-16
ATE465865T1 (en) 2010-05-15
BRPI0717013B1 (en) 2018-05-29
DE502007003622D1 (en) 2010-06-10
BRPI0717013A2 (en) 2013-10-08
DE102006041275A1 (en) 2008-03-20
DE102006041275B4 (en) 2013-02-14
WO2008028867A1 (en) 2008-03-13

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