WO2012049040A1 - Procédé et dispositif de formation de fonds ouverts sur des zones d'extrémité de corps de sacs tubulaires - Google Patents

Procédé et dispositif de formation de fonds ouverts sur des zones d'extrémité de corps de sacs tubulaires Download PDF

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Publication number
WO2012049040A1
WO2012049040A1 PCT/EP2011/067329 EP2011067329W WO2012049040A1 WO 2012049040 A1 WO2012049040 A1 WO 2012049040A1 EP 2011067329 W EP2011067329 W EP 2011067329W WO 2012049040 A1 WO2012049040 A1 WO 2012049040A1
Authority
WO
WIPO (PCT)
Prior art keywords
bag body
spreading tool
transport
tubular bag
tool
Prior art date
Application number
PCT/EP2011/067329
Other languages
German (de)
English (en)
Inventor
Hannes Grill
Original Assignee
Starlinger & Co Gesellschaft M.B.H.
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43663517&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2012049040(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Starlinger & Co Gesellschaft M.B.H. filed Critical Starlinger & Co Gesellschaft M.B.H.
Priority to BR112013009006-5A priority Critical patent/BR112013009006B1/pt
Priority to RU2013121833/12A priority patent/RU2543423C2/ru
Priority to CN201180049808.3A priority patent/CN103153599B/zh
Priority to MX2013003146A priority patent/MX2013003146A/es
Publication of WO2012049040A1 publication Critical patent/WO2012049040A1/fr
Priority to ZA2013/01974A priority patent/ZA201301974B/en

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
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/52—Folding sheets, blanks or webs by reciprocating or oscillating members other than plungers and dies, e.g. by fingers
    • 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
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/102—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from essentially rectangular 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents

Definitions

  • the invention relates to a method and a device for forming open trays at open end regions of tubular bag bodies, which bag bodies are preferably made from a fabric of stretched plastic tapes, wherein the bag body transported flat in a transport direction transversely to its longitudinal extent at a transport speed and during the Transports are opened to be folded end portions of the tubular bag body.
  • Chest bags also called cross-bottom bags, are sacks of parallelepiped shape, which are manufactured in bag making machines by providing tubular bag bodies whose open end portions are folded into cross bottoms. The bag bodies are guided lying flat through the clothing plant, so that two layers of the tubular bag body abut each other. For bottom formation, the two layers are separated at the end regions of the tubular bag body and one of the two layers is folded over as a side flap by 180 ° to itself, creating an open bottom, in which the other layer forms a second side flap. By folding a layer at the end of the tubular bag body is formed at the front and rear of this end portion each have a triangular envelope.
  • valve sheets can be inserted (for the production of "box valve sacks" that can be filled with filler through the valve) and the final floor configuration is produced by overlapping the bottom side flaps.
  • the overlapping bottom side flaps are glued together or thermally welded depending on the material of the bag body.
  • bottom cover sheets can be placed on the overlapped bottom side flaps and glued or welded to them.
  • the quality of a box bag depends essentially on the geometrically exact design of the floors. This means that the triangular corner envelopes must approximate as closely as possible the shape of an isosceles triangle, because only then is it possible to form bottom side flaps whose side edges are in the state of the open bottom parallel to a ground center line and thus parallel to each other. Only when the bottom side flaps have these parallel to the ground center line extending side edges, it is again possible to strike them overlapping each other parallel to the ground center line. And only if the turning of the Bodenrawklappen is geometrically accurate, the finished sack bottom has a rectangular shape, which makes the bag well processed and stackable. Warped floors often have poor tightness and strength.
  • the corner envelopes are formed by the folding of a bottom side flap, however, do not always have the desired exact shape due to the geometrically indeterminate starting position, so that the further processing of the bag floor by inserting Ventilzetteln, wrapping the Bodenendklappen and connecting to a ground cover sheet is difficult.
  • the present invention achieves this object by providing a method for forming open trays at open end portions of tubular bag bodies, wherein the bag bodies are transported flat in a transport direction transversely to their longitudinal extent at a transport speed and during opening the end portions of the tubular bag bodies to be folded are opened , according to the features of claim 1.
  • the present invention also achieves this object by providing a device for forming open trays at open end regions of tubular bag bodies, wherein the bag body flat transported in a transport direction transversely to its longitudinal extent at a transport speed and opened during transport to the folding end portions of the tubular bag body are, according to the features of claim 10.
  • the method according to the invention and the device according to the invention are particularly suitable for processing bag bodies made of stretched plastic tapes.
  • the plastic tapes may be made of polyethylene or polypropylene and optionally provided with a plastic coating.
  • the stretched fabric web may be provided with a plastic coating to achieve the tightness of the fabric, to improve printability, and to adjust other desirable properties.
  • Bags of stretched plastic tape have superior strength over paper or plastic film bags, but tend to slip in the manufacturing process and are also harder to fold than, for example, paper. Therefore, it is of particular advantage that these bag bodies can be handled by the present invention.
  • bag body made of plastic film or other materials or composite materials are processed. As a rule, bottoms are formed at both end regions of the tubular bag body.
  • the bag body is transported lying flat in a transport direction transversely to its longitudinal extent at a transport speed and during transport opened to be folded end portion of the tubular bag body.
  • a spreading tool is inserted into the open end region of the tubular bag body.
  • the spreading tool is moved in the transport direction at a speed which is increased relative to the transport speed until the spreading tool runs against the inside of the tubular bag body at the front part of the opened end region with at least two front contour points defined on the spreading tool and thereby said front part a front corner envelope in the form of a substantially isosceles triangle spreads, each leg of the front triangular Eckumschlags rests against at least one front contour point of the expansion tool. Then, the spreading tool is moved out of the front corner envelope by relatively delaying its movement relative to the transport speed, and the generated front corner envelope is pressed.
  • a device according to the invention for forming an open bottom at an open end region of a tubular bag body comprises a transport device for transporting the bag body in a flat state in a transport direction transversely to its longitudinal extent at a transport speed, and an opening device for opening the foldable end portions of the tubular bag body during their Transport on the transport device.
  • the apparatus further comprises a spreading tool, which is insertable into the open end region of each tubular bag body during its transport on the transport device, wherein the spreading tool is movable in the transport direction at a speed increased relative to the transport speed until it - seen in the transport direction - the front part reached the open end region and with at least two am Spreading tool defined front contour points runs against the inside of the tubular bag body and spreads said front part to a front corner envelope in the shape of a substantially isosceles triangle, each leg of the front triangular Eckumschlags rests against at least one front contour point of the spreading tool, and wherein the spreading tool the front corner envelope is moved out by relative delaying its movement relative to the transport speed.
  • the device further comprises a pressing device for pressing the generated front corner envelope.
  • a further improvement of the exact definition of the desired geometric shape of the open bottom can be achieved according to the invention, when the spreading tool is moved in the open end region of the tubular bag body in the transport direction with a reduced or negative speed relative to the transport speed, until it is the rear one, viewed in the direction of transport Achieved part of the open end portion and runs with at least two defined on Sp Dahltechnikmaschinegne rear contour points against the inside of the tubular bag body and spreads said rear part to a rear corner envelope in the form of a substantially isosceles triangle, each leg of the rear triangular Endumschlags at least one rear Contour point of the spreading tool rests.
  • the spreading tool is moved out of the rear corner turn by relatively accelerating its movement against the conveying speed, and the generated rear corner turn is pressed by a pressing means.
  • bottom side flaps are formed from the tube layers at the open end region, which extend on opposite sides of a bottom center line, whereby the formation of the opened bottom is completed geometrically determined and the bag body can be transferred in this configuration to further processing stations.
  • this end region is brought along a transport line from the first plane of the flat bag body into a substantially orthogonal second plane, the subsequent opening of the end region can be particularly simple.
  • a bottom side flap of the open end portion may be formed by folding a first tube layer onto itself along a fold line extending in the direction of transport, and forming the other bottom side flap from a second tube layer by folding this second tube layer into the plane of the flat bag body becomes.
  • the open bottom is again in the plane of the bag body, which greatly facilitates the pressing and transport to further processing s stations.
  • the spreading tool is guided away from the end region of the bag body after the formation of the front triangular corner envelope and optionally also of the rear triangular corner envelope, so that the bag body can be transported further unhindered. It is particularly preferred if the spreading tool is moved away only after the fixation of the tip of the front Eckumschlags by a pressing device from the front corner envelope of the bag body. In this way it is reliably prevented that the front corner envelope begins to unfold after or even while the spreading tool moves out of the front corner envelope. This feature is particularly useful for bag bodies of slipping and unfolding material, such as e.g. Plastic film or woven plastic tape, especially useful.
  • the present invention it is possible with the present invention to form exact front and rear corner envelopes, even if the expansion tool rests with only one contour point on each leg of the corner envelopes.
  • the method according to the invention will be more stable in hard production operation if the spreading tool is equipped with front contour lines and, optionally, rear contour lines for the formation of the rear corner turn. These contour lines define portions of the legs of the front triangular corner envelope and optionally also portions of the legs of the rear triangular corner envelope, wherein the contour lines may extend over the entire length of the legs.
  • the opening device comprises on and off suction devices which can be fed to a respective tube layer at the end portion of the tubular bag body, and after contacting the respective tube layer and switching the suction transverse to the transport direction wegbewegbar and simultaneously with transport speed in Transport direction are movable.
  • Such opening device works very reliable and low maintenance. It has proved to be favorable for highly reliable opening operations when the center axes of the suction devices in the transport direction T congruent or successively offset, preferably offset.
  • the spreading tool has an arm and plates and / or rods mounted on this arm, on which the front contour points or contour lines and optionally also the rear contour points or contour lines are defined.
  • the plates and / or bars may each be specially adapted to particular bag proportions or materials. It is further preferred if the plates and / or bars are arranged symmetrically to the transport direction, because this automatically enforced that the formed corner envelopes are aligned symmetrically to the transport direction.
  • the spreading tool is mounted on a rotating drive, for example, oriented in the transport direction toothed belt or chain drive, the rotating drive is accelerated and delayed relative to the transport speed, realizes a very reliable and low-maintenance drive, with the main drive, the for the Transport the bag body is responsible, can be synchronized.
  • the spreading tool is designed as a split tool, so that the pressing device protrudes into the spreading tool or can be passed without colliding with it, the pressing of the corner envelope can already begin while the spreading tool is still in the corner envelope.
  • the pressing device fixes the corner envelope against unfolding and warping.
  • the pressing device expediently comprises compression belts, pressure rollers and / or contact sliding elements.
  • Fig. 1 to Fig. 6 are schematic perspective views of parts of a device according to the invention for explaining the method according to the invention
  • FIGS. 7A and 7B show a first embodiment of a spreading tool in perspective and in plan view
  • FIGS. 8A and 8B show a second embodiment of a spreading tool in perspective and in plan view
  • 9A and 9B show a third embodiment of a spreading tool in perspective and in plan view
  • FIG. 10 is a partial perspective view of a first embodiment of a pressing device
  • FIG. 11 is a perspective view of a second embodiment of a pressing device.
  • FIG. 12 is a perspective view of a third embodiment of a pressing device.
  • a device 1 according to the invention for forming an open bottom at an open end region of a tubular bag body which is referred to below as a bottom opening device 1.
  • a bottom opening device 1 for forming an open bottom at an open end region of a tubular bag body
  • the bottom opening device 1 has a transport device 2 in the form of a conveyor belt and moves continuously with a transport speed V in a transport direction T.
  • a transport device 2 in the form of a conveyor belt and moves continuously with a transport speed V in a transport direction T.
  • tubular bag bodies 10 in flat lying state with their longitudinal extent L transversely to the transport direction T.
  • the bag body 10 are on secured to the conveyor belt by means not shown holding means against slipping.
  • Such holding means include, for example, strips of ferromagnetic material, which are placed on the bag bodies 10 and of the Bottom of the conveyor belt with magnets that move together with the conveyor belt, are attracted to the conveyor belt and thereby press the intermediate bag body 10 to the conveyor belt.
  • the conveyor belt is formed as a perforated conveyor belt, wherein from the underside of the conveyor belt, a vacuum is applied, which sucks the bag body 10 to the conveyor belt.
  • the tubular bag body 10 are made for example of fabric of stretched plastic tape.
  • the plastic tapes may comprise a polyethylene or polypropylene material.
  • the fabric has a plastic coating.
  • the tubular bag body 10 may alternatively be made of plastic film.
  • the tubular bag body 10 has two opposing open end regions 10e, 10f.
  • the end region 10e is to be formed into a cross bottom, as explained below.
  • the end portion 10f may also be formed into a cross bottom in the same manner as the end portion 10e, thereby producing a box bag or box valve bag.
  • Fig. 1 it can be seen that the tubular bag body 10 initially rests flat in a first plane ⁇ on the transport device 2. In this flat lying state, a first and a second tube layer 10a, 10b abut each other. Then, the end region 10e of the tubular bag body 10 is brought by means of a folding bar 12, which is referred to in the jargon as "Vorbruchelf", and baffles I Ia, I Ib from the first level ⁇ of the flat bag body in a substantially orthogonal extending second plane ⁇ 2 ,
  • FIG. 2 shows the bag body 10 with fully orthogonal upward (in the second level ⁇ 2) folded end region 10e.
  • the folding bar 12 continues in the transporting direction T and, in cooperation with the deflection plate 11a, has the task of closing the end region 10e of the bag body 10 folded in the second plane ⁇ 2 in this angular position relative to the first plane ⁇ in which the bag body 10 lies hold.
  • a generally designated by the reference numeral 20 opening means comprises two suction devices 13, 14 which are reciprocally transversely to the transport direction T on symbolically shown cross members 15, 16.
  • the cross members 15, 16 may be formed, for example, as rails or pivot arms.
  • cross members 15, 16 piston-cylinder assemblies, wherein the suction devices 13, 14 sit at the free ends of the piston and in such a way transversely to the transport direction T back and forth.
  • the cross members 15, 16 are movable by means of longitudinal members 17, 18 in the transport direction T with the transport speed V.
  • the longitudinal members 17, 18 may be formed, for example, as rails, pivot arms or piston-cylinder arrangements. The exact design of cross members and side members does not matter; It is only essential that the suction devices 13, 14 are movable both transversely to the transport direction T and in the transport direction T.
  • FIG. 2 shows a method step in which the two suction devices 13, 14 have been brought into contact with the first tube layer 10a or the second tube layer 10b from opposite sides in the end region 10e.
  • a vacuum is switched on so that the first suction device 13 sucks in the first tube layer 10a and the second suction device 14 sucks in the first tube layer 10b.
  • the suction devices 13, 14 move synchronously with the transport device 2 at the transport speed V in the transport direction T, so that no distortion of the tube layers 10a, 10b can occur.
  • the two suction devices 13, 14 start to move away from one another transversely to the transport direction V (arrows PI or P2), in each case pulling a tube layer 10a, 10b with them and thereby open the end region 10e of the tubular bag body 10.
  • FIG. 3 shows the end region 10e of the tubular bag body 10 in the opened state, in which a free space 10g is formed between the tube layers 10a, 10b. It can also be seen in this illustration that meanwhile the vacuum has been switched off by the suction devices 13, 14 and the two suction devices 13, 14 have disengaged from the tube layers 10a, 10b and can therefore be moved upstream against the transport direction T to open the end of the next bag body. It can also be seen in this illustration that the open end region 10e has a geometrically largely undefined shape. Now, a spreading tool 21 is inserted into the clearance 10g of the opened end portion 10e, whereby the spreading tool 21 moves in a circular arc (arrow P3) into the opened end portion 10e.
  • the sheet movement of the expansion tool 21 has a directed in the transport direction T movement component with respect to the transport speed V higher relative speed VIR.
  • the spreading tool 21 is driven by one or more parallel rotating toothed belt or one or more parallel rotating roller chains, the toothed belt 25 or the chain is respectively aligned by at least 2 pulleys or sprockets 26, 27 in the transport direction T.
  • the bottom opening device is thus formed from one or more, preferably two spreading tools, wherein the distance between the spreading tools can be variable by separate drive units.
  • one of the pulleys 26, 27 is connected to a controllable drive, so that synchronized with the clock in which the bag body 10 run through the bottom opening device 1, the spreading tool with respect to the transport speed V can be accelerated and delayed.
  • FIG. 4 it can be seen that the circular arc movement of the spreading tool 21, after it has passed around the pulley 26, has passed into a translational movement in the transport direction T by being pulled from the lower run of the toothed belt 25. Due to the still higher relative velocity VIR relative to the transport speed T, the spreading tool 21 moves faster than the bag body 10 and therefore runs against the inside of the tubular bag body at a front portion 10v of the opened end portion 10e, with front contour points 23p, 24p of the spreading tool 21 first come into contact with the bag body. These front contour points 23p, 24p represent end points of front contour lines 23v, 24v of the spreading tool 21 (see also FIGS.
  • the spreading tool 21 spreads the front part 10V to a front corner turn 10J which has the shape of a substantially isosceles triangle.
  • the legs 10k, 10m of the front triangular corner turn lOj are defined by at least one front contour point of the expansion tool against it.
  • both the front contour points 23p, 24p and the front contour lines 23v, 24v of the spreading tool 21 rest on the legs 10k, 10m.
  • the isosceles triangle is a right-angled isosceles triangle.
  • FIG. 4 shows the state in which the front corner envelope 10j has been completely formed by the spreading tool 21.
  • the isosceles triangular shape of the front Eckeinschlags lOj is positioned symmetrically to a center line M of the open end region lOe.
  • the spreading tool 21 forms the front triangular Eckumschlag lOj, it folds at the same time a front portion of the first tube layer 10a around the folding bar 12 around back on itself, so that this area of the tube layer 10a is again in the first level ⁇ .
  • the spreading tool 21 folds a front region of the second tube layer 10b into its original position in the first plane ⁇ .
  • the formation of the bottom side flaps 10u, 10t from the two tube layers 10a, 10b is started.
  • the spreading tool 21 is moved backward out of the front corner envelope 10j by relative delaying its movement relative to the transport speed T, continuing the folding of the tubular layers 10a, 10b and thus forming the bottom side flaps 10u, 10t from the two tube layers 10a, 10b progresses.
  • the tip 10s of the front corner cover 10J has come to a pressing device 28, which initially holds the tip 10s and successively the entire front corner cover 10j in the defined form and prevents the latter Corner envelope lOj unfolded again.
  • the pressing device 28 is formed as a pressure belt 28a, which is aligned in the transport direction T and revolves around two guide rollers 28b, 28c, of which in Fig. 3 to Fig. 6, only the rear guide pulley 28b is shown.
  • FIG. 10 shows the complete pressing device 28.
  • FIG. 5 shows a method state in which the spreading tool 21 has been moved in the open end region 10e of the tubular bag body 10 in the transport direction T with a reduced or negative speed V2R relative to the transport speed V until it reaches the rear one (viewed in the transport direction T) Part 10h of the open end region has reached lOe and accumulated against the inside of the tubular bag body with at least two defined on the expansion tool rear contour points 23q, 24q and said rear part 10h has spread to a rear corner envelope 10p in the form of a substantially isosceles triangle.
  • These rear contour points 23q, 24q represent end points of rear contour lines 23h, 24h of the spreading tool 21 (see FIGS.
  • the isosceles triangle is a right-angled isosceles triangle. As can be seen from Fig. 5, at this time, the formation of the two bottom side flaps lOu, 10t is completed.
  • relative to the transport speed V reduced or negative speed V2R means that the spreading tool 21, although in the transport direction, but at a lower speed than the transport speed V is moved, or that the spreading tool is temporarily stopped, or that the spreading tool is moved counter to the transport direction T.
  • the spreading tool 21 is moved out of the rear corner turn 10p by relatively accelerating its movement V3R relative to the conveying speed T, to the pulley 27 where it is in one Circular arc movement is brought into a position remote from the end region 10e, then returned along the upper run of the toothed belt 25 to form the open bottom of the subsequent bag body (or the next but two, if two spreading tools are provided, etc.).
  • the spreading tool 21 is formed as a split tool with two plates 23, 24 mounted on an arm 22 leaving a clearance 21a therebetween.
  • the front and rear contour points 23p, 24p, 23q, 24q are defined, as are the front and rear contour lines 23v, 24v, 23h, 24h.
  • the split shape of the spreading tool 21 allows the pressing device 28 to extend through the clearance 21a, thereby allowing the folded front and back corner envelopes 10j, 10p and bottom side flaps 10u, 10t to be held down earlier and pressed than when collision to prevent with the spreading tool 21 - would have to be arranged further downstream of the spreading tool 21.
  • Figures 8A and 8B show a first alternative embodiment of a spreading tool 30.
  • the first alternative spreading tool 30 differs from the spreading tool 21 in that only one plate 31 having edges, the front contour lines 31vl, 31vr and rear contour lines 31hl, 3 ye define.
  • the first alternative spreading tool 30 is thus not a split tool.
  • FIGS 9A and 9B show a second alternative embodiment of a spreading tool 32.
  • the second alternative spreading tool 32 differs from the spreading tool 21 in that two obliquely directed rods 33, 34 are formed on the arm 22, the tips of which define contour points 33p, 34p.
  • the rods 33, 34 are arranged at a distance 32a from each other. It is thus a split tool, wherein by the distance 32a a pressing device is guided. Since each bar 33, 34 defines only one contour point 33p, 34p, the second alternative spreading tool 32 is suitable depending on the installation position only for producing a front or rear corner turn. To both the front To produce corner cover as well as the rear corner envelope, two second alternative spreading tools 32 must be combined, for example, by being mounted one behind the other and in the reverse installed position on the toothed belt 25.
  • Fig. 11 shows an alternative pressing device 35 in the form of a press shoe made of a material with good sliding properties with respect to the bag body.
  • FIG. 12 shows a further alternative pressing device 36 in the form of a rotatable pressure roller.

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  • Supplying Of Containers To The Packaging Station (AREA)
  • Bag Frames (AREA)

Abstract

L'invention concerne un dispositif (1) de formation d'un fond ouvert sur une zone d'extrémité (10e) d'un corps de sac tubulaire (10), dans lequel les corps de sacs (10) sont transportés à plat dans la direction de transport (T) transversalement à leur extension longitudinale (L) à une vitesse de transport (V) et les zones d'extrémité sont ouvertes par un dispositif d'ouverture (20). Un outil d'écartement est introduit dans les zones d'extrémité ouvertes (10e) des corps de sac pendant leur transport sur le dispositif de transport et déplacé dans la direction de transport (T) à une vitesse (VIR) supérieure à la vitesse de transport (V) jusqu'à ce qu'il bute contre la partie avant (10v) de la zone d'extrémité ouverte, les points de contour avant (23p, 24p; 33p, 34p) étant situés contre le côté intérieur du corps de sac. Il écarte la partie avant (10v) pour obtenir un rabattement des coins avant (10j) sous la forme d'un triangle isocèle. Une fois le rabattement des coins (10j) formé, l'outil d'écartement (21, 30, 32) est sorti du rabattement des coins avant (10j) par un ralentissement de son déplacement par rapport à la vitesse de transport (V). Le rabattement des coins est pressé par un dispositif de serrage (28, 35, 36).
PCT/EP2011/067329 2010-10-14 2011-10-04 Procédé et dispositif de formation de fonds ouverts sur des zones d'extrémité de corps de sacs tubulaires WO2012049040A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BR112013009006-5A BR112013009006B1 (pt) 2010-10-14 2011-10-04 Métodos e dispositivo para formar fundos abertos em regiões de extremidade de corpos de saco tubulares
RU2013121833/12A RU2543423C2 (ru) 2010-10-14 2011-10-04 Способ и устройство для образования открытого дна в концевых зонах рукавных корпусов мешков
CN201180049808.3A CN103153599B (zh) 2010-10-14 2011-10-04 用于在管状的袋体的端部区域处构造敞开的底部的方法和装置
MX2013003146A MX2013003146A (es) 2010-10-14 2011-10-04 Metodo y dispositivo para formar fondos abiertos en regiones extremas de cuerpos de saco tubulares.
ZA2013/01974A ZA201301974B (en) 2010-10-14 2013-03-15 Method and device for forming open bottoms on and regions of tubular bag bodies

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WO2015176096A1 (fr) 2014-05-20 2015-11-26 Lohia Corp Limited Dispositif et procédé de formation d'une ouverture de fond dans un corps de sac
WO2015176094A1 (fr) 2014-05-20 2015-11-26 Lohia Corp Limited Dispositif et procédé de formation d'une ouverture de fond dans un corps de sac
CN105150589A (zh) * 2015-09-15 2015-12-16 无锡鼎茂机械制造有限公司 制袋机用翻遍压膜装置
WO2017021077A1 (fr) * 2015-07-31 2017-02-09 Windmöller & Hölscher Kg Dispositif et procédé de fixation d'une partie inférieure ouverte d'une pièce tubulaire
RU2769355C2 (ru) * 2017-12-14 2022-03-30 Штарлингер Унд Ко Гезелльшафт М.Б.Х. Мешок для сыпучего материала

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EP2711165B1 (fr) * 2012-09-24 2016-07-27 Starlinger & Co. Gesellschaft m.b.H. Dispositif d'acheminement pour corps de sachet
EP2711164B1 (fr) 2012-09-24 2016-06-22 Starlinger & Co. Gesellschaft m.b.H. Dispositif et procédé destinés à ouvrir une zone d'extrémité d'un corps de sachet tubulaire
DE102013014739B3 (de) * 2013-09-04 2014-08-07 Windmöller & Hölscher Kg Vorrichtung und Verfahren zur Herstellung von Säcken
EP3017940B1 (fr) 2014-11-04 2017-09-13 Starlinger & Co. Gesellschaft m.b.H. Procédé et dispositif de fabrication de sacs à partir de corps de sac tubulaires
DE102016207567A1 (de) * 2016-05-03 2017-11-09 Windmöller & Hölscher Kg Transporteinrichtung und Verfahren zum Transport von Säcken oder Beuteln sowie Vorrichtung zur Herstellung von Säcken oder Beuteln
ES2726708T3 (es) * 2016-07-14 2019-10-08 Starlinger & Co Gmbh Dispositivo para abrir una zona de extremo de un cuerpo de saco con forma tubular
CN109703102B (zh) * 2019-01-16 2021-01-05 青岛晨峰智能装备有限公司 包装袋开底组件、四角成型装置及其控制方法
CN110385891B (zh) * 2019-07-04 2021-07-20 河北盛世锦唐包装有限公司 一种新型方底阀口袋制袋机
WO2021151621A1 (fr) 2020-01-29 2021-08-05 Windmöller & Hölscher Kg Dispositif permettant de produire des replis d'angle sur des corps de sacs tubulaires
WO2021229395A1 (fr) * 2020-05-11 2021-11-18 Lohia Corp Limited Appareil et procédé destinés à l'ouverture des extrémités de pièces de bande tubulaires pour fabriquer des sacs à fond plat
AT524968B1 (de) 2021-04-29 2022-12-15 Starlinger & Co Gmbh Vorrichtung und Verfahren zur Herstellung von Säcken aus Schlauchstücken

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DE1561473B1 (de) * 1967-06-19 1971-08-26 Windmoeller & Hoelscher Vorrichtung zum Aufziehen und Flachlegen von Kreuzboeden an quergefoerderten Kunststoff-Schlauchabschnitten
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AT406755B (de) 1998-10-05 2000-08-25 Starlinger & Co Gmbh Vorrichtung zum öffnen von schlauchförmigen sackkörpern
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WO2015176096A1 (fr) 2014-05-20 2015-11-26 Lohia Corp Limited Dispositif et procédé de formation d'une ouverture de fond dans un corps de sac
WO2015176094A1 (fr) 2014-05-20 2015-11-26 Lohia Corp Limited Dispositif et procédé de formation d'une ouverture de fond dans un corps de sac
WO2017021077A1 (fr) * 2015-07-31 2017-02-09 Windmöller & Hölscher Kg Dispositif et procédé de fixation d'une partie inférieure ouverte d'une pièce tubulaire
CN108136708A (zh) * 2015-07-31 2018-06-08 温德莫勒及霍尔希尔公司 用于固定软管件的敞开的底部的装置和方法
CN105150589A (zh) * 2015-09-15 2015-12-16 无锡鼎茂机械制造有限公司 制袋机用翻遍压膜装置
CN105150589B (zh) * 2015-09-15 2018-09-21 无锡鼎茂机械制造有限公司 制袋机用翻遍压膜装置
RU2769355C2 (ru) * 2017-12-14 2022-03-30 Штарлингер Унд Ко Гезелльшафт М.Б.Х. Мешок для сыпучего материала

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EP2441574A1 (fr) 2012-04-18
CN103153599A (zh) 2013-06-12
EP2441574B1 (fr) 2013-05-15
ES2424952T3 (es) 2013-10-10
CN103153599B (zh) 2015-06-17
MY155933A (en) 2015-12-31
MX2013003146A (es) 2013-06-07
BR112013009006A2 (pt) 2016-07-05
RU2543423C2 (ru) 2015-02-27
ZA201301974B (en) 2013-11-27
BR112013009006B1 (pt) 2020-12-15
RU2013121833A (ru) 2014-11-20

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