EP3159151B1 - Empileur et procédé destiné à empiler au moins partiellement des sacs, des sachets ou similaires - Google Patents

Empileur et procédé destiné à empiler au moins partiellement des sacs, des sachets ou similaires Download PDF

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Publication number
EP3159151B1
EP3159151B1 EP16193009.4A EP16193009A EP3159151B1 EP 3159151 B1 EP3159151 B1 EP 3159151B1 EP 16193009 A EP16193009 A EP 16193009A EP 3159151 B1 EP3159151 B1 EP 3159151B1
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EP
European Patent Office
Prior art keywords
bags
stacking
sacks
gas flow
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.)
Active
Application number
EP16193009.4A
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German (de)
English (en)
Other versions
EP3159151A1 (fr
Inventor
Lasse Nagel
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
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Windmoeller and Hoelscher KG
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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
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B31B70/98—Delivering in stacks or bundles

Definitions

  • the invention relates to a stacking device for at least partially stacking bags, bags or the like according to the preamble of claim 1 and a method for at least partially stacking bags, bags or the like according to the preamble of claim 9.
  • a generic device is through the DE 13 01 707 B known.
  • a generic method is by the DE 37 07 845 A1 known.
  • stacking devices are often arranged behind these bottom-laying devices, but not only here, on which a plurality of bags are stackable at a stacking location to form a stack. If the desired number of bags has been piled up, this stack is removed from the stacking point by means of a removal device, for example a conveyor belt, or by hand.
  • a removal device for example a conveyor belt, or by hand.
  • a bag is fed into the stacking device by a transport device of a main machine, for example, the above-mentioned bottoming device.
  • the transport device of the stacking device takes over the bag, wherein the transport device with higher Speed as the transport device of the main machine runs, so as to increase the distance between two consecutive bags, so that the bags can be stacked clean on each other later and are not pushed together.
  • the sacks leave this transport device in the direction of the transport direction, ie, due to the principle of inertia, the bag "continues to fly” to be stacked, while they begin to fall downwards due to the influence of gravity.
  • the movement in the direction of the transport direction is stopped by a stop element, so that the sacks now fall onto the collecting device, whose height level is below the height level of the end of the transport device.
  • Such a device for stacking flat workpieces is characterized by DE 37 07 845 A1 known.
  • the object of the present invention is therefore to provide a stacking device and a method which operate reliably even at higher transport speeds.
  • a further object is that the stacking device and the method avoid qualitative losses of the bags.
  • the device for influencing the falling speed of at least parts of a bag comprises at least one device for generating a gas flow.
  • the invention is based on the recognition that a single sack moves or falls downwards on a horizontal discharge only on the basis of the gravitational acceleration. This often does not make room for the following sack at an increased machine speed. According to the invention, it is now provided to influence this fall rate. A corresponding facility that does this is also provided. Thus, it is now possible, in particular to increase the fall speed, so to carry out a dropping of the bag on the stack in a shorter time than is the case with exclusive influence of the acceleration of gravity. Thus, with increased transport speed of the main machine, it is not absolutely necessary to increase the transport speed in the stacking device as well. Nevertheless, the individual sacks are filed faster.
  • the stacking device is integrated in the main machine. It can even be dispensed with a separate transport device for the stacking device.
  • the transport device of the main machine represents the transport device of the stacking device.
  • the stacking device according to the invention is preferably combined in connection with a bottom-laying device or is a component of such a bottom-laying device. Particularly preferably, this is a Bodenlegevorraum for forming bottoms of hose pieces comprising plastic material. Bags made of plastic material are usually very light, so that the device according to the invention is particularly advantageous here.
  • a material layer in bags which comprise plastic material generally has a basis weight of at most 120 g / cm 2 , preferably at most 100 g / cm 2 .
  • Said plastic material may be plastic film, non-woven or woven fabric, wherein the fabric may consist of ribbons with stretched polyolefinic material.
  • the plastic materials can also be provided with a coating and / or designed as a laminate. The molding of the soil is done for example by Hot air seals. In this case, a bottom cover sheet can be sealed on one folded bottom.
  • the bags may be closed on both sides but provided with a valve bags. However, a sack can also be open on one side.
  • a device for influencing the falling speed of at least parts of the bag is provided in the stacking device according to the invention. This ensures that a subsequent bag now no longer runs laterally into the leading bag, which has led to product upsets in devices of the prior art. It may be sufficient if the trailing end of a bag seen in the transport direction can be influenced or influenced in the fall speed, since then a subsequent bag pushes over the leading bag, without causing problems.
  • the invention is particularly advantageous when the bags are ungauged above the collector. This means that the transport device only reaches as far as the edge of the collecting device and does not cover the collection surface on which the bags can be collected.
  • the terms “top”, “bottom”, “above”, “below”, “vertical”, “horizontal” and so on in this application refer to the normal and well-known spatial directions.
  • an influence on the falling speed may also mean that at least the front end of a trailing bag is reduced in its falling speed. Specifically, this may mean, for example, that the front end of the trailing bag is slightly raised relative to the transport plane so as not to collide with the leading bag. It may then be followed by an increase in the fall speed to make room again for the then subsequent bag.
  • the device for influencing the falling speed of at least parts of a bag comprises at least one device for generating a gas flow. This may in particular mean that a - preferably pulsating - flow of a gas from above, ie in the vertical direction from top to bottom directed gas stream, acts on the individual bags. In this case can be dispensed with moving components, which reduces the susceptibility of a mechanical arrangement and thus increases the reliability of the stacking device.
  • a gas flow between the first and the second height level can be introduced.
  • the gas stream is here introduced with a horizontal component or substantially horizontally in said region.
  • the gas stream can be entered in the period in which a bag leaves the transport device.
  • the introduction of a gas flow in the said range makes use of the Bernoulli effect, in which there is a dynamic negative pressure due to the velocity of the gas flow. This negative pressure leads to a force on the bag, which just leaves the transport device. This force is directed downward, the force leads to an increase in the fall speed.
  • the gas flow may be slightly below the plane defined by the transport device, because the closer the gas flow to the bag, the greater the effect referred to.
  • the gas stream is directed in transport device.
  • the above-mentioned effect can also be observed if the gas flow is conducted, for example, transversely to the transport direction, a further important advantage results in the aforementioned, preferred measure.
  • the direction of the gas flow further leads to the fact that the friction between the uppermost bag of the bag stack and the following bag is reduced. This is another contribution to the safe formation of sack stacks created, because this measure is a the friction between the uppermost bag of the bag stack and the subsequent bag can be reduced. This creates a further contribution to the safe formation of sack stacks, because this measure supports secure stacking of the sacks.
  • the same advantageous effect can be achieved if the gas flow is directed counter to the transport direction.
  • the device for influencing the falling speed of at least parts of a bag comprises at least one gas nozzle.
  • a gas nozzle is characterized in that it has on the outlet side a reduced cross-section with respect to the inlet side, so that on the outlet side after the venturi effect the gas flow has an increased velocity compared to the gas flow at the inlet side. This enhances the Bernoulli effect described above.
  • the transport device is a deflecting element for deflecting a conveying member, wherein the at least one gas nozzle is then arranged next to the deflecting element.
  • the conveying member is an endless circulating belt and the deflecting element is a deflecting wheel.
  • the at least one gas nozzle is arranged next to the deflection wheel.
  • the arrangement next to the deflecting element is advantageous, since in this area there are usually fixing possibilities, for example on the machine frame or on the components supporting the deflecting element.
  • the gas flow between the first and the second height level can easily be introduced and / or directed in the transport direction of the bags.
  • a Druckeinstellvoroplasty is provided with which the pressure of the gas flow is adjustable and / or regulated, and / or a Volumenstromeinstellvoroplasty is provided, with which the Druckeinstellvortechnisch can reach a pressure control element or an adjustable throttle used.
  • the change in the outlet cross section of the at least one gas nozzle can be provided. This change in the outlet cross section can be caused for example by replacing the gas nozzle or by adjusting a variable gas nozzle.
  • the pressure and / or the volume flow of the gas flow can be designed to be controllable, wherein as a measuring device, for example, a speed meter can be provided, with which the falling speed of a bag can be measured. The use of a measuring device for measuring the fall time is advantageous here.
  • the setpoint of the controlled system can then be predeterminable as a function of the speed of the transport device.
  • air is provided as the gas. Air is particularly easy to handle as an always available gas.
  • the tasks are, starting from a method according to the preamble features of claim 9, solved by its characterizing features. Accordingly, it is contemplated that the fall rate is affected by at least portions of a bag using a gas stream.
  • the same advantages are achieved, which have already been described in connection with the stacking device according to the invention.
  • the gas flow is introduced between the first and the second height level. Also, as already described above, the Bernoulli effect is exploited.
  • FIGS. 1 and 2 show in plan view and in side view an embodiment of the stacking device 101 according to the invention.
  • This comprises a transport device 102 with which bags 103 are transportable in the transport direction x.
  • the transport device 102 comprises upper conveyor belts 104 and lower conveyor belts 105, wherein in the FIG. 1 the lower conveyor belts 105 are only partially visible and are therefore symbolized by dash-dotted lines.
  • at least two upper conveyor belts 104 and at least two lower conveyor belts 105 are provided.
  • the bag 103 is during its transport on the lower conveyor belts, while the upper conveyor belts provide sufficient friction between the bag 103 and the lower conveyor belts 104.
  • the upper conveyor belts can therefore be replaced by at least one roller or other suitable pressing means.
  • the lower conveyor belts 105 extend with their outlet-side ends 106 up to the collecting device 120, but without overlapping them.
  • the conveyor belts 105 each comprise an endless belt 107, which is guided over at least two deflection rollers 108, 109, wherein the latter roller is assigned to each of the outlet-side end 106.
  • the upper strands of the straps 107 span a plane defining an upper height level.
  • the endless belts 110 of the upper conveyor belts 104 each run over two pulleys 111 and 112.
  • each guide roller 109 At the side of each guide roller 109 at least one air nozzle 113 is arranged such that it lies below the first height level.
  • the airflow 114 is shown by broken lines.
  • the air nozzles 113 are aligned so that the air flow is directed substantially in the transport direction x.
  • the air nozzle is supplied by compressed air supply means 115, such as a pump, via compressed air lines 116 with compressed air.
  • the pressure of the compressed air is adjustable via a Druckeinstellelement 117 to a desired value.
  • the collecting device 120 comprises a storage table 121 which stands on supports 122 on the floor, for example on the floor of a workshop. Furthermore, the collecting device 120 comprises a conveyor belt 123, which is movable transversely to the transport direction x via rollers, not shown in greater detail, either in the direction z or in the direction z. It is preferably an intermittent transport, which takes place when the desired number of already stacked sacks 103 'has been deposited on the sack stack 124.
  • the upper level of the collector represents a second height level, which is below the first height level. The air flow coming from the air nozzle is above the second height level.
  • the function of the stacking device 101 is as follows: As soon as a bag with its leading transverse edge has exceeded the deflection roller, an air flow is expelled from the air nozzle, so that due to the Bernoullie effect, the front region of the bag 103 is pulled down in the vertical direction y so that the sack is below the first height level as soon as possible to make room for a subsequent sack. At the same time the air flow provides an air cushion between the bag 103 and the top of the already stacked bags 103 '. In this way, the bag 103 can reach without disturbing influences up to the stop plate 125, so that its movement in the direction x is terminated. Now the bag 103 sinks only on the bag stack 124 and now forms the top of the already stacked bags 103 '.
  • the conveyor 123 is set in motion, which conveys the sack stack to a picking position where it is removed from a packaging device or manually.
  • the Fig. 3 schematically shows the individual steps for processing a hose to sacks, as they take place in a sack making device 301, wherein already the hose comprises plastic material or preferably consists of plastic materials.
  • the stacking device according to the invention can be combined in an advantageous manner with such a bag making device, since the bags produced thereby are very light. The advantages of this combination have already been described in detail in the introductory description.
  • the tube 302 is fed to the sack manufacturing device 301. This advantageously takes place by unwinding the tube forming a lap 303 in a development device 304. Subsequently, the tube 302 experiences the so-called opening in the layer separation station 305.
  • the tube is guided around an inner tool 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 305.
  • the tube is guided around an inner tool which separates the two layers, so that the layers, if they have been bonded together during one of the production steps of the tube, separate. Only with separate layers can it be ensured that the following production steps can be carried out properly.
  • the separate material layers of the hose are put back on top of each other.
  • the tube is then fed to the cross-cutting device 306, which singulates the tube into individual pieces of tubing.
  • both ends of each tube piece are opened and the so-called ground rectangles are laid.
  • a valve is placed on one of the two open ends and fastened.
  • the open bottoms are now closed in the bottom closing station 310, wherein two tabs placed on each other and permanently, for example, by sealing, are connected.
  • the conclusion of the actual Sackherstellreaes forms the application of a bottom cover sheet on the floors in the cover sheet station 311.
  • the cover sheets can also be sealed.
  • the finished bags are then deposited with the stacking device according to the invention on the bag stack 124 and transported away from there in the manner described above.

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  • Pile Receivers (AREA)

Claims (10)

  1. Dispositif d'empilement (101) pour l'empilement au moins partiel de sacs (103, de sachets ou autres, avec
    un dispositif de transport (102), avec lequel les sacs (103), sachets ou autres peuvent être transportés individuellement les uns après les autres, le dispositif de transport (102) adoptant, vu dans la direction de transport (x), au moins au niveau de son extrémité (106), une première hauteur,
    un dispositif de collecte (120) sur lequel les sacs (103), sachets ou autres peuvent être collectés, une partie des sacs (103), sachets ou autres pouvant être superposés au moins partiellement, le dispositif de collecte (120) étant disposé à une deuxième hauteur qui est disposée en dessous de la première hauteur et avec un dispositif pour le contrôle de la vitesse de chute d'au moins des parties d'un sac,
    caractérisé en ce que
    le dispositif de contrôle de la vitesse de chute d'au moins des parties d'un sac comprend au moins un dispositif (113, 115, 116, 117) pour la production d'un flux de gaz.
  2. Dispositif d'empilement (101) selon la revendication 1,
    caractérisé en ce que
    avec le dispositif (113, 115, 116, 117) pour la production d'un flux de gaz, un flux de gaz (114) peut être généré entre la première et la deuxième hauteur.
  3. Dispositif d'empilement (101) selon l'une des deux revendications précédentes,
    caractérisé en ce que
    au moins une partie du flux de gaz (114) est orienté dans la direction de transport (x).
  4. Dispositif d'empilement (101) selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif (113, 115, 116, 117) de contrôle de la vitesse de chute d'au moins des parties d'un sac (103) comprend au moins une buse de gaz (113).
  5. Dispositif d'empilement (101) selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif de transport (102) comprend un élément de renvoi (109) pour le renvoi d'un organe de convoyage (107), la buse de gaz (113) étant disposées près de l'élément de renvoi (109).
  6. Dispositif d'empilement (101) selon l'une des revendications précédentes,
    caractérisé en ce que
    un dispositif de réglage de pression (117) est prévu, avec lequel la pression du flux de gaz (114) peut être réglée et/ou régulée.
  7. Dispositif d'empilement (101) selon l'une des revendications précédentes,
    caractérisé en ce que
    un dispositif de réglage de débit volumique (113) est prévu, avec lequel le débit volumique (114) peut être réglé et/ou régulé.
  8. Dispositif d'empilement (101) selon l'une des revendications précédentes,
    caractérisé en ce que
    le gaz utilisé est de l'air.
  9. Procédé d'empilement au moins partiel de sacs (103), sachets ou autres dans lequel
    avec un dispositif de transport (102), les sacs (103), sachets ou autres sont transportés individuellement les uns après les autres, le dispositif de transport (102) adoptant, vu dans la direction de transport (x), au moins au niveau de son extrémité , une première hauteur,
    sur un dispositif de collecte (120), les sacs (103), sachets ou autres sont collectés, une partie des sacs (103), sachets ou autres pouvant être superposés au moins partiellement, le dispositif de collecte (120) étant disposé à une deuxième hauteur qui est disposée en dessous de la première hauteur,
    caractérisé en ce que
    la vitesse de chute d'au moins des parties d'un sac (103) est contrôlée,un flux de gaz étant utilisé.
  10. Procédé selon la revendication 9,
    caractérisé en ce que
    le flux de gaz (114) est appliqué entre la première et la deuxième hauteur.
EP16193009.4A 2015-10-20 2016-10-10 Empileur et procédé destiné à empiler au moins partiellement des sacs, des sachets ou similaires Active EP3159151B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015220365.4A DE102015220365A1 (de) 2015-10-20 2015-10-20 Stapelvorrichtung und ein Verfahren zum zumindest teilweisen Übereinanderstapeln von Säcken, Beuteln oder dergleichen

Publications (2)

Publication Number Publication Date
EP3159151A1 EP3159151A1 (fr) 2017-04-26
EP3159151B1 true EP3159151B1 (fr) 2018-12-12

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EP16193009.4A Active EP3159151B1 (fr) 2015-10-20 2016-10-10 Empileur et procédé destiné à empiler au moins partiellement des sacs, des sachets ou similaires

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EP (1) EP3159151B1 (fr)
DE (1) DE102015220365A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115556422B (zh) * 2022-08-22 2024-11-12 安徽天元塑业有限公司 一种方底阀口袋生产用袋体硬化装置
CN118618787A (zh) * 2024-07-27 2024-09-10 保定天泽林板业有限公司 一种刨花板自动贮存设备

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1301707B (de) * 1966-08-31 1969-08-21 Gartemann & Hollmann Gmbh Stapeleinrichtung fuer Grosssack-Fertigungsanlagen
DE3707845A1 (de) * 1987-03-11 1988-09-22 Windmoeller & Hoelscher Vorrichtung zum stapeln von flachen werkstuecken, vorzugsweise kreuzbodenventilsaecken

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE102015220365A1 (de) 2017-04-20
EP3159151A1 (fr) 2017-04-26

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