EP2288492B1 - Vorrichtung und verfahren zur herstellung von säcken, welche gewebe aus gereckten kunststoffbändchen umfassen - Google Patents

Vorrichtung und verfahren zur herstellung von säcken, welche gewebe aus gereckten kunststoffbändchen umfassen Download PDF

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Publication number
EP2288492B1
EP2288492B1 EP09727833.7A EP09727833A EP2288492B1 EP 2288492 B1 EP2288492 B1 EP 2288492B1 EP 09727833 A EP09727833 A EP 09727833A EP 2288492 B1 EP2288492 B1 EP 2288492B1
Authority
EP
European Patent Office
Prior art keywords
flexible
tube
opening
piece
tube piece
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.)
Active
Application number
EP09727833.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2288492A1 (de
Inventor
Carsten Tausch
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
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Publication of EP2288492A1 publication Critical patent/EP2288492A1/de
Application granted granted Critical
Publication of EP2288492B1 publication Critical patent/EP2288492B1/de
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • 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
    • B31B2155/00—Flexible containers made from webs
    • 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/003—Flexible containers made from webs starting from tubular webs
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/003—Opening or distending bags

Definitions

  • the invention relates to an apparatus and a method for the production of sacks, which comprise fabrics of stretched plastic tapes, according to the preamble of claims 1 and 9.
  • Such devices are known and have been available on the market for a long time. As a rule, they initially comprise a separating device in order to separate a supplied fabric hose, which may also be coated, into hose pieces. These consist of two superposed material webs, each web of material can be constructed of several layers of different material. The pieces of hose are then taken over by at least one transport device in order to spend them in the individual processing stations. One of these processing stations is the so-called bottom opening station. Here at least one end of a piece of tubing is pulled open so that a bottom can be formed on this end being pulled up. In general, both ends of a piece of hose are processed in this way.
  • a device with which such bags can be produced is in the DE 195 02 251 A1 disclosed.
  • such a device is proposed, which is inexpensive to manufacture, in order to keep the investment costs for the procurement within limits.
  • the pieces of tubing are moved forward in the clock mode.
  • the hose pieces are transported lying flat transversely to its main axis, so that laterally arranged processing means simultaneously both ends of the Can edit hose piece.
  • the opening station the hose pieces are stopped.
  • the upper layer is raised at the ends of the hose piece by means of a nipple, so that a horizontally displaceable in the direction of the main axis plate can move in between the two layers of material of the hose section.
  • the lower material layer of the hose section is held in place by negative pressure on the table on which the hose section rests during transport.
  • the upper material layer is thereby folded back on the outside of the upper material layer, so that a Boden rectangle arises.
  • corner impacts also occur, which form on both sides of the floor rectangle and have a triangular shape.
  • the sheet is pulled back and transported the bag on.
  • the hose pieces are successively taken over by a further transport device, which feeds them in a uniform speed, ie continuously, a bottom closure device.
  • the bottom rectangle and the corner impacts are thus in the plane of the hose piece, preferably in the horizontal direction.
  • the soil remains in the horizontal plane as the method of bottom closure has advantages.
  • both press rollers can act on the floor over the entire width. This can not be done, for example, if the floors are orthogonal to the actual bag body. In this case, no continuous nip can compress the entire floor. In the area of the ground center line where the bag body is located, the one must Press roll inevitably be interrupted. So there can be no compression, which could cause leaks in the finished bag.
  • Another aspect of tillage in the plane of the bag body is that, when the bottom is welded by means of hot air and a ground cover sheet is welded, the hot air is uniformly applied to the parts to be welded. So there is a uniform joining instead.
  • the layers of the folded ends can not be pulled apart well at all floor widths, so that they are reliably foldable away from each other by the means for separating and folding. Further, with the disclosed detectors, it is not possible to reliably separate layers which are also made of a stretched plastic tape fabric.
  • the object of the present invention is therefore to propose a device for the production of sacks, which operates reliably in continuous operation.
  • each detection device comprises a plurality arranged on a bar suction and that the detection means are arranged on rotating elements on which the detection means are mounted eccentrically.
  • the device for opening the ends of the hose pieces contained in the device comprises means for folding over the ends of the hose pieces from the horizontal position into a vertical position.
  • the two material layers continue to lie together. So it is one end of the hose piece folded by about 90 degrees, so that between the hose piece and the folded-up end creates approximately a right angle. Also a folding down by 90 degrees is conceivable in principle. In this way it is possible to separate by relatively simple opening means, the two layers of the up or folded down the end and fold into the horizontal. This process can then take place simultaneously for both layers and especially during continuous operation. In effect, a piece of tubing having an open bottom is obtained, which does not differ from a piece of tubing provided with an open bottomed cycle, so that the known bottom closure station can be used. Due to the uniform working method for both material layers, the mounting of the floor can be done faster, so that the performance can be significantly increased.
  • the device for opening at least one end of a piece of tubing for this end comprises at least two detection devices, wherein with each detection means a material layer of the respective piece of tubing can be detected and wherein the material layers are separable from each other with the at least two detection devices.
  • These detection devices are adapted to apply forces to the two outer layers of material, wherein the forces are directed opposite. The forces must be large enough to overcome any attractive forces that may be caused by an electrostatic charge, for example.
  • the detection devices need, if the ends of the tube piece are folded over 90 degrees from the horizontal, are moved only in a horizontal plane. This saves compared to other devices for the production of bags comprising woven fabric of stretched plastic, height.
  • the detection devices are mounted eccentrically on rotating elements, such as disks that these are at least temporarily operated with the same speed vector, which indicates the speed direction and the amount of speed, as the piece of hose.
  • rotating elements such as disks that these are at least temporarily operated with the same speed vector, which indicates the speed direction and the amount of speed, as the piece of hose.
  • suckers are provided for this purpose, which are arranged on a beam. These can be brought to both sides of the folded-up end. After being subjected to negative pressure, the suction cups can be removed from each other again so that the layers of material are likewise removed from one another. Now the inside of the hose piece is accessible.
  • the device for opening at least one end of each of a piece of hose comprises supports to which the detection devices can be fastened.
  • the detection devices can be mounted in different positions, so that the material layers can be detected independently of the height of the folded-up end of the hose piece.
  • the carriers are designed as guides which extend parallel to the folded ends of the hose piece, that is perpendicular to the plane of the hose piece. By moving the detection devices along the guides so they are adjustable in height. By “height-adjustable” is meant that the distance between the detection devices to the transport plane of the hose pieces is changeable.
  • the area of the hose piece end folded over by 90 degrees is already small, so that the detection devices are along the guides are brought close to the aforementioned transport level.
  • the detection elements are further removed from the transport plane.
  • the guides may be configured as simple rods to which the detection means by means of suitable fastening means, such as knurled nuts, can be locked. If at least two parallel guides are provided for each detection device, tilting of the detection devices can be prevented. Overall, such a detection device can be easily and quickly arranged in their vertical distance to the hose piece. The height of the up or down folded end ultimately defines the width of the finished floor.
  • a particularly preferred embodiment of the invention includes spreading elements, which can be introduced between the two layers of material of the end of the hose piece to be opened. Furthermore, it is advantageous if these spreading elements move the material layers so far away from each other that they are then completely horizontal. Such expansion elements have a good effect especially when operated in combination with the detection devices described above. In this case, the spreading elements can dive without problems in the space between the already separated by the detection elements material layers.
  • the Fig. 1 schematically shows individual steps for processing a fabric tube to bags, as done in bag making device 1.
  • the fabric tube 2 is fed to the sack manufacturing device 1. This is advantageously done by unwinding the fabric 3 forming a fabric tube in a processing device 4. Subsequently, the tube 2 experiences the so-called opening in the layer separation station 5.
  • the fabric tube is guided around an inner tool around which separates the two layers, so that the layers, if they were glued together in one of the manufacturing steps of the tube, separate. Only with separate layers can it be ensured that the following production steps can be carried out properly. Afterwards, the separate material layers of the hose are put back on top of each other.
  • the fabric tube is now fed to the cross-cutting device 6, which separates the fabric tube into individual pieces of hose.
  • both ends of each tube piece are opened and the so-called bottom squares are laid.
  • valve station 9 a valve is placed and secured on one of the two open ends.
  • the open floors are now closed in the bottom closing station 10, wherein two tabs placed on each other and permanently, for example, by welding, connected.
  • the conclusion of the actual Sackherstellreaes forms the application of a ground cover sheet on the floors in the cover sheet station 11.
  • the cover sheets can also be welded.
  • the finished bags are then placed on the bag stack 12 and transported away from there on unspecified manner.
  • the Fig. 2 shows details of an opening station 5 in a device according to the invention.
  • the tube pieces 13 are transported by means of a transport device not shown in the direction x on the surface of a support 14, for example, on the surface of a table, lying flat, so horizontal.
  • a transport device not shown in the direction x on the surface of a support 14, for example, on the surface of a table, lying flat, so horizontal.
  • this end is first brought from the horizontal position to a vertical position.
  • the hose piece must be counteracted.
  • the hose piece 13 is threaded under a folding belt 16.
  • This folding tape can be relative to the hose pieces in peace and thus relative to the support in motion.
  • the hose pieces can also move relative to the folding belt 16. This is the case, for example, when the seam is at rest.
  • the rebate belt may consist of a flexible, but highly prestressed material. Preferably, however, these consist of steel sheets, which are connected in a manner not shown with the support 14 or with the machine frame. Steel sheets have the advantage over other components of a smaller thickness with the same load capacity. If the hose piece 13 is threaded, it is then guided past a guide element 17, for example a baffle.
  • the opening of the second end 15 'of the tube piece 13 takes place in the same way, but offset from the opening of the first end 15.
  • the first end is already opened in the bottom opening device 18, while the second end 15' is guided under the folding band 16 '.
  • the open bottom 19 ' is generated in the manner described above.
  • a staggered arrangement of the components is advantageous when bags are to be produced with very small bottom center distances A.
  • the piece of tubing with open bottoms 19, 19 ' is present, wherein all components of the opened bottoms are located substantially in the plane of the support 14.
  • each bottom opening device 18, 18 ' is supplied with torque by its own drive. This is illustrated by the motor 22 on the bottom opening device 18. The corresponding motor on the bottom opening device 18 'is not visible in the illustrated view.
  • the motor of a bottom opening device 18, 18 ' primarily supplies the suction bars with a drive torque, so that they can move the material layers away from one another. Also, the spreading elements are powered by this engine with torque.
  • FIG. 3 shows the view III-III in FIG. 2 , In this FIG. 3 Details of the floor opening station 8 can be seen.
  • suction strips are provided, of which the suction strip 20 facing the viewer can be seen.
  • suction pad 20 sucker are arranged, which are able to detect the observer facing side of the end 15 of the hose piece 13.
  • the folded ends 15 of the hose pieces 13 have different heights H.
  • they should engage as close as possible to the upper end of the end 15.
  • the suction pads 20, 20 'on vertical guides 21, 21' releasably secured, so that the suction pads in the direction of the double arrow y along the folded ends 15 can be moved and adjusted according to their heights H.
  • the guides can be made in various ways. These can be round or rectangular profiles that are solid or hollow.
  • the Fig. 4 shows the view IV - IV from the FIG. 3 , In addition to the front suction bar 20 and the front guide 21, the suction bar 20 'and the guide 21' can now be seen.
  • FIG. 5 shows the view V - V of FIG. 2 ,
  • the pressure roller 23 is mounted in a lever arm 25 or in a Hebelarmcru.
  • the lever arm 25 itself is pivotally mounted in the machine frame or in attachments 26 of the machine frame.
  • the lever arm 25 about an axis 27 which is fixedly connected to attachments, pivotable and fixable on this axis.
  • a suitable, but not shown clamping device may be provided.
  • the lever arm is freely rotatably mounted on the axle 27.
  • the lever arm 25 is fixedly connected to a shaft which is rotatably mounted in the attachments.
  • the pressure roller 23 can now act on the opened trays with a predetermined force, for example its own weight.
  • the support 14 which in the FIG. 2 shown serve.
  • a counter-pressure roller 24 with which the pressure roller 23 forms a nip in which the open trays 19 are compressible.
  • the counter-pressure roller can be rotatable, but arranged fixed to the frame.

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  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP09727833.7A 2008-04-03 2009-03-30 Vorrichtung und verfahren zur herstellung von säcken, welche gewebe aus gereckten kunststoffbändchen umfassen Active EP2288492B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008017442A DE102008017442B4 (de) 2008-04-03 2008-04-03 Vorrichtung und Verfahren zur Herstellung von Säcken, welche Gewebe aus gereckten Kunststoffbändchen umfassen
PCT/EP2009/053747 WO2009121842A1 (de) 2008-04-03 2009-03-30 Vorrichtung und verfahren zur herstellung von säcken, welche gewebe aus gereckten kunststoffbändchen umfassen

Publications (2)

Publication Number Publication Date
EP2288492A1 EP2288492A1 (de) 2011-03-02
EP2288492B1 true EP2288492B1 (de) 2017-03-01

Family

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EP09727833.7A Active EP2288492B1 (de) 2008-04-03 2009-03-30 Vorrichtung und verfahren zur herstellung von säcken, welche gewebe aus gereckten kunststoffbändchen umfassen

Country Status (8)

Country Link
EP (1) EP2288492B1 (zh)
JP (1) JP5743884B2 (zh)
CN (1) CN102006991B (zh)
AT (1) AT506551B1 (zh)
BR (1) BRPI0911265B1 (zh)
DE (1) DE102008017442B4 (zh)
ES (1) ES2626121T3 (zh)
WO (1) WO2009121842A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010039770A1 (de) 2010-08-25 2012-03-01 Windmöller & Hölscher Kg Sack sowie Verfahren und Vorrichtung zur Herstellung von Säcken
WO2012025413A2 (de) * 2010-08-25 2012-03-01 Windmöller & Hölscher Kg Sack sowie verfahren und vorrichtung zur herstellung von säcken
EP2441574B1 (de) 2010-10-14 2013-05-15 Starlinger & Co Gesellschaft m.b.H. Verfahren und Vorrichtung zum Ausbilden von offenen Böden an Endbereichen von schlauchförmigen Sackkörpern
AT514545B1 (de) * 2013-07-26 2015-02-15 Herwig Dipl Ing Worff Verfahren zur Herstellung von Säcken aus einem Gewebe
DE102013014732B4 (de) 2013-09-04 2023-08-03 Windmöller & Hölscher Kg Verfahren und Vorrichtung zur Herstellung von Kreuzboden-Säcken
DE102014206790A1 (de) * 2014-04-08 2015-10-08 Windmöller & Hölscher Kg Packmittel sowie Vorrichtung und Verfahren zur Herstellung eines Packmittels
EP3017940B1 (de) * 2014-11-04 2017-09-13 Starlinger & Co. Gesellschaft m.b.H. Verfahren und eine Vorrichtung zur Herstellung von Säcken aus schlauchförmigen Sackkörpern
CN111038001A (zh) * 2019-12-31 2020-04-21 常州骓慕机械有限公司 一种非插入式三角成型装置和方法
CN112743913A (zh) * 2020-12-16 2021-05-04 胡孝春 用于编织袋生产预折边机构及其设备

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DE19540150A1 (de) * 1995-10-27 1997-04-30 Windmoeller & Hoelscher Vorrichtung zum Aufziehen kontinuierlich quergeförderter Schlauchabschnitte zum Zweck der Anformung von Böden bei der Sackherstellung

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GB1240300A (en) * 1967-09-01 1971-07-21 Windmoeller & Hoelscher Method of and apparatus for opening flattened tubes of flexible sheet material
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JPS61175031A (ja) * 1985-01-31 1986-08-06 凸版印刷株式会社 フラツプ折込み装置
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CZ289183B6 (cs) 1995-01-25 2001-11-14 Windmöller & Hölscher Zařízení na vytahování konců plochých hadicových odřezků
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Also Published As

Publication number Publication date
BRPI0911265B1 (pt) 2020-02-04
AT506551A2 (de) 2009-10-15
WO2009121842A1 (de) 2009-10-08
AT506551B1 (de) 2016-06-15
CN102006991B (zh) 2013-06-19
JP5743884B2 (ja) 2015-07-01
BRPI0911265A2 (pt) 2015-09-29
DE102008017442B4 (de) 2013-01-17
JP2011516306A (ja) 2011-05-26
WO2009121842A8 (de) 2010-12-09
DE102008017442A1 (de) 2009-10-08
EP2288492A1 (de) 2011-03-02
AT506551A3 (de) 2015-06-15
CN102006991A (zh) 2011-04-06
ES2626121T3 (es) 2017-07-24

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