EP3328628B1 - Maschine und verfahren zur herstellung von beuteln - Google Patents

Maschine und verfahren zur herstellung von beuteln Download PDF

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Publication number
EP3328628B1
EP3328628B1 EP16742347.4A EP16742347A EP3328628B1 EP 3328628 B1 EP3328628 B1 EP 3328628B1 EP 16742347 A EP16742347 A EP 16742347A EP 3328628 B1 EP3328628 B1 EP 3328628B1
Authority
EP
European Patent Office
Prior art keywords
folding
tubular body
drum
machine
station
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
EP16742347.4A
Other languages
English (en)
French (fr)
Other versions
EP3328628A1 (de
Inventor
Freddy OBERHAUSER
Dominique Morel
Cédric Ritondo
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.)
Holweg Group SAS
Original Assignee
Holweg Group SAS
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 Holweg Group SAS filed Critical Holweg Group SAS
Publication of EP3328628A1 publication Critical patent/EP3328628A1/de
Application granted granted Critical
Publication of EP3328628B1 publication Critical patent/EP3328628B1/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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16—Cutting 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/006—Controlling; Regulating; Measuring; Safety measures
    • 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
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/16—Cutting 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/261—Folding sheets, blanks or webs involving transversely folding, i.e. along a line perpendicular 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/56—Folding sheets, blanks or webs by rotary members co-operating with blades
    • 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
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/62—Uniting opposed surfaces or edges; Taping by adhesives
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/004—Closing bags

Definitions

  • the present invention relates to a bag making machine, in particular to bags made of a flexible material such as paper, aluminum, plastic or a combination of these materials. It also relates to a manufacturing method implemented by such a machine.
  • a technique consisting of forming a hose from a strip of paper roll, to separate sections from this hose and to close one end of the section to form a bag.
  • the hose may also be made of a plastic part, for example transparent, assembled by gluing with the paper by covering the respective edges.
  • the document FR 786,579 shows several examples of this technique. It shows in particular on Figures 4 to 6 a manufacturing method in which the paper web is provided at regular intervals with transverse perforation lines, with a line in the center and two lines, axially offset with respect to the center line on each strip of the strip.
  • the casing is formed by folding each edge over the central portion and gluing together the two edges along a central junction so that the perforations form two transverse lines respectively offset on the one and the other side. sides of the hose.
  • the thus formed hose passes between a pair of drive rollers which drive the hose at a constant speed.
  • the front part of the hose is gripped by the folding device which has a drum and a counter-rotating folding roll.
  • the drum and the folding roll rotate with a peripheral speed greater than that of the pair of drive rollers.
  • the folding roll has a bar that is able to pinch the front of the hose against the drum so that the front portion of the hose is pulled and separated by tearing along the perforations to form a stub.
  • a rear leg is thus formed on the section, as well as a front leg at the end of the hose.
  • This front leg will be on the next leg.
  • the front leg is folded by the folding device on a glued area to close the front portion of the section.
  • the roller further comprises a folding blade, placed just behind the bar, which pushes the hose in a clamp carried by the drum so as to bend the hose.
  • the same document proposes to add a pair of separation rollers between the pair of drive rollers and the folding device, in order to be able to perform the separation function in place of the folding device.
  • the document FR 829 591 also proposes to add a pair of auxiliary rollers between the drive rollers and the separation rollers, by pinching the hose only during the separation operation.
  • This solution is widely adopted today. However, it does not allow for greater precision because the detached section must be supported by means of transport between the position in which separation took place and the management of the section by the folding station. This loss of precision is particularly noticeable when the fold of the flap to be glued is also the limit of different impressions.
  • transport means which are generally formed by belts mounted in a loop on either side of the bag path. The belts can receive residual glue, which dirty them and creates a risk of jamming when a bag remains stuck on a belt.
  • the change in length of the bags produced is obtained by a change in speed ratio between the drive rollers and those carrying out the separation, so as to scroll a greater or lesser portion of the hose during each separation cycle.
  • a change in speed ratio between the drive rollers and those carrying out the separation so as to scroll a greater or lesser portion of the hose during each separation cycle.
  • the differential speed is limited by stresses on the hose during the separation phase, which limits the choice on bag length possibilities.
  • the document FR 2,716,182 discloses a machine comprising the features of the preamble of claim 1. The characteristics of the machine disclosed by this document are also found in the preamble of claim 11.
  • the object of the invention is to provide a bag making machine which allows a greater choice of bag length, with a great ease of adjustment, less risk of jamming and greater precision.
  • the subject of the invention is a bag-making machine, comprising a gut formation station for forming into a casing a strip of flexible material perforated transversely at intervals, a holding station for retaining the casing, a folding station for forming a bottom at the end of the casing, the folding station comprising a drum and a folding roll rotatably mounted on axes parallel to each other, the folding roll having a folding blade for folding a flap at the end of the hose in cooperation with a clamp at the periphery of the drum so as to form the bottom, the folding station comprising tearing means comprising a tear-off bar for clamping the casing against the drum, the folding station and the holding station being configured to exert between them a traction on the casing when the perforations are between the two stations and detach a portion of the hose, the machine being characterized in that the tear-off bar is arranged to separate the hose portion while the bottom of the ladi the portion of hose is already formed,
  • the control of the speed of rotation of the drum makes it possible to adapt it to the different phases of a cycle, in particular from the folding phase to the separation phase, so that the speed differential between that of the hose and that of the periphery of the drum is suitable, regardless of the length of the bags.
  • This speed adaptation makes it possible to give the folding blade during folding a speed which is that of the hose.
  • the hose is then clamped between the drum and the tear bar so that the holding station can operate while the perforations are between the holding station and the folding station.
  • the speed of the tear bar is greater than the peripheral speed of the rollers of the holding station. This allows a great freedom in the choice of the length of the bag, without any constraint on its maximum length.
  • the folding takes place while the section is not yet separated from the hose, one obtains a great precision on the position of the folding.
  • the drum and the folding roll are mechanically synchronized. If they have the same diameter, they rotate at the same speed.
  • the folding roll has a diameter of half that of the drum and rotates twice as fast, the drum has twice as many tongs as the folding roll has folding blades. Other reports are possible.
  • the drum and the folding roll are rotated separately.
  • the number of folding blades and clamps on the drum are independent.
  • the tear bar is carried by the folding roll.
  • the folding and tearing functions are thus performed by the same roller, which simplifies the construction of the machine.
  • the tearing means comprise a tear-off roller bearing the tear-off bar.
  • the contacting of the tear bar with the drum can thus be managed independently of the folding roll, which reduces stress, in particular speed variation on the folding roll.
  • the tear roller may be placed near the folding roll such that it is still possible to make short bags by making the separation between the bag and the hose a short distance from the fold. It is also possible to place the tear roller downstream of the folding roll, which makes it possible to bring the place of separation of the bag and the hose as close as possible to the folding roll.
  • the machine comprises a perforation station for perforating transversely the strip of flexible material.
  • control means control the perforation station in order to perforate the band at a chosen location.
  • control means control the holding station.
  • the maintenance period of the hose for achieving the separation is thus also controlled by programming the control means and without intervention on the mechanical means.
  • the rotation speed is adjusted during the turn to synchronize the pinch of the hose with the tightening of the front of the hose on the drum.
  • the speed can also be continuous and simply adapted to the type of bag to be produced and the speed of travel of the hose.
  • the drum comprises at least two grippers distributed on the periphery to grip the front of the hose.
  • the folding blade is retractable cyclically.
  • the retraction can be performed by a cam system inside the folding roll or by a spacing of the folding roll itself. This retraction allows for example to avoid pinching the hose once every two or more, so as to make a longer bag without having to stop or slow down excessively the folding roller.
  • the invention also relates to a bag manufacturing method in which a strip of flexible material perforated transversely at intervals is formed in a casing, a bottom is formed at the end of the casing on a folding station comprising a drum and a drum.
  • bending roll mounted rotatably along axes parallel to one another, the bottom being formed by folding a flap at the end of the hose by a folding blade in cooperation with a clamp at the periphery of the drum, and detaching a portion of hose by clamping the casing against the drum with a tear-off bar and in a holding station for retaining the casing, pulling on the casing when the perforations are between the two stations, the method being characterized in that detaching the hose portion after forming the bottom and piloting the rotation of the drum to synchronize it with the front of the hose.
  • a bag-making machine comprises a unwinding station, not shown, for unwinding a strip 2 of flexible material, then, following the unwinding direction of the band 2 represented by the arrow F1, a perforation station 3 for perforating the strip 2 of flexible material transversely at regular intervals or not, a formation station 4 of a casing 2a for forming the band 2 into a casing 2a, a training station 5, a holding station 6 for retaining the casing 2a, and a folding station 7 to form a bottom 20 at the end of the casing 2a.
  • the machine further comprises transport means, not shown, arranged between the various stations to guide and transporting the hose 2a between the stations or bags formed after folding.
  • the perforation station 3 conventionally comprises a blade roll 31 and a counter roll 32 rotatably mounted about axes parallel to each other.
  • the blade roll 31 has blades 310 extending in generatrices for perforating, squeezing the band 2 against the counter roll 32 and forming the transverse perforation lines 22a, 22b.
  • the formation station 4 of the casing 2a conforms to the band 2 perforated in casing 2a in a conventional manner, not detailed here. It will be noted that the perforations form two transverse lines 22a, 22b respectively offset on one and the other of the faces of the casing 2a.
  • the drive station 5 comprises two drive rollers 51 between which the hose 2a is clamped to be driven at a stable speed which determines the speed of travel of the hose 2a, in the direction of the arrow F1.
  • the holding station 6 comprises two holding cylinders 61, 62 mounted counter-rotating, the upper holding cylinder 61 having one or two holding bars 610 extending along a generatrix.
  • the holding bars 610 come into contact with the lower holding cylinder 62 once or twice a turn to pinch the hose 2a which passes between the holding rolls 61, 62.
  • the speed of the holding rolls 61, 62 is adjusted to the peripheral speed at the level of the holding bars 610 is less than or equal to that of the passage of the casing 2a, at least at the time of the nip.
  • the folding station 7 comprises a drum 71 and a folding roller 72 rotatably mounted about parallel axes.
  • the folding roll 72 comprises a folding blade 720 for folding a flap 21 at the end of the hose 2a, a glue bar 721 for applying glue to the hose 2a and a tear bar 722 for clamping the hose 2a against the drum 71.
  • the drum 71 comprises two grippers 710 distributed around the periphery to grip the front of the casing 2a.
  • the folding station 7 and the holding station 6 are configured to exert between them a traction on the casing 2a when the perforations are between the two stations 6, 7 and thus detach a portion of the casing 2a.
  • the tear bar 722 is disposed behind the folding blade 720, that is to say, it intervenes to pinch the hose 2a while the end of the hose 2a is being bent or is already folded .
  • the drum 71 and the folding roll 72 are mechanically synchronized and counter-rotating.
  • the machine further comprises control means, not shown, for controlling the rotation of the folding station 7 in order to synchronize the drum 71 with the front of the hose 2a.
  • the control means are formed for example of a synchronous motor, also called brushless motor, an electronic converter supplying the motor and a controller executing a program for controlling the various parts of the machine, including the converter.
  • the method implemented by the machine will now be described beginning with an arbitrary position, knowing that each position is also found in the next cycle.
  • the process is a succession of cycles, a bag being produced for each cycle.
  • the strip 2 of material is unwound by the unrolling station 1, perforated by the perforation station 3 and then formed into a casing 2a which is pulled by the drive station 5 in a conventional manner, not detailed here.
  • the hose 2a passes between the rolls of the holding station 6 and then between the drum 71 and the folding roll 72.
  • the folding blade 720 pushes the casing 2a in the clamp by marking a fold, as shown in FIG. figure 2 .
  • the clip closes on the fold, so that a flap 21 projects substantially radially from the drum 71.
  • the glue bar 721 deposits glue just behind the fold, to form a glued area 23, shown in FIG. figure 2 .
  • the flap 21 is pressed against the glued area 23 by means not shown and is thus maintained.
  • the bottom 20 of the bag is then formed, as shown in FIG. figure 3 .
  • the tear bar 722 then comes into contact with the drum 71 to clamp the hose 2a, while the perforations have exceeded the holding station 6 and the holding bars 610 also come into contact.
  • the hose 2a is then stretched so as to separate from a section which is already formed in bag 2b, as shown in FIG. figure 4 .
  • the clip 710 releases the bag before or after the separation of the section, which is then discharged in a conventional manner.
  • the control means then control an acceleration then a slowing down of the folding station 7, or vice versa, to bring the next clip 710 in synchronization with the front of the casing 2a, in order to start a cycle again.
  • the only adjustment to be made to change the bag length is an intervention at the piercing station 3 to change the interval between the perforation lines, and the programming of the control means.
  • the separation operation of the section 2b requires a speed differential between the drum 71, which must turn faster, and the holding station 6. This differential can be obtained if the drum 71 has dropped the bag and began to accelerate before the separation operation. Otherwise, particularly when the bag is short and must be separated while the drum has not dropped the front of the hose, it must be provided that the holding station 6 slows down the hose 2a for a short time during the separation operation.
  • the drum 71 and the folding roll 72 are rotated separately.
  • This is achieved by providing for example the folding roller 72 of its own motor, also controlled by the control means.
  • the machine thus has greater adjustment possibilities. Indeed, one can drive the folding roller 72 so that it intervenes only when passing a clamp 710 on two or three. It is thus possible to manufacture bags longer than the development of the drum 71 between two successive grippers 710, with no length limit.
  • it is possible to wait for the opportune moment for the detachment bar 722 to come into contact with the drum 71, so that the perforations are between the holding station 6 and the folding station 7.
  • the speed of the holding station 6 is adjusted so that one turn corresponds to the length of a bag.
  • control means control the perforation station 3 in order to perforate the band 2 at a chosen location.
  • the control means control the perforation station 3 in order to perforate the band 2 at a chosen location.
  • control means drive the holding station 6.
  • the control means drive the holding station 6.
  • the folding station 7 ' differs from that of the first embodiment in that it further comprises a tear-off roll 73 carrying the tear-off bar 732.
  • the folding roll 72' therefore no longer has a bar pullout.
  • the tear roller 73 is rotatably mounted on an axis offset upstream with respect to the folding roller 72 '.
  • the tear roller 73 is also controlled by the control means independently of the folding roller 72 ', to clamp the hose 2a on the drum 71 at the appropriate time and to achieve the separation of the hose in cooperation with the holding station 6 .
  • a fourth embodiment of the invention differs from the third embodiment in that the roll the tear-off roller 73 "is placed downstream of the folding roller 72" in the same folding station 7 "The tear-off roller 73" carrying the tear-off bar 731 "is also controlled by the control means independently of the folding roll 72 ", to pinch the hose 2a on the drum 71 at the appropriate time, after the completion of the bottom, and to achieve the separation of the hose in cooperation with the holding station 6. The separation can thus be performed while the separation line is very close to the 72 "folding roll.
  • the control of the rollers is conducted to obtain the desired speed during the work phases, so at a specific time. This is obtained for example by increasing and then decreasing the speed of rotation if it is necessary to fill a delay, or on the contrary by decreasing and then increasing the speed of rotation, or even stopping the roll if necessary. It is even possible to reverse the direction of rotation to provision a sufficient acceleration to reach the appropriate speed.
  • the invention is not limited to the embodiments which have just been described by way of example.
  • the drum may have only one clamp, or even three or four.
  • the drum 71 is shown to be larger than the folding roll, it could have an equivalent diameter, or even smaller, especially if it carries only a clamp 710.
  • the gap between the perforations may not to be regular, so as to produce successions of bags of different lengths, the machine being able to adapt to each bag length without further adjustment.

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Claims (11)

  1. Maschine zur Herstellung von Beuteln, beinhaltend eine Station zur Bildung (4) eines Rohrkörpers (2a) zur Bildung eines Rohrkörpers (2a) aus einem Band (2) aus einem in Intervallen quer perforierten weichen Werkstoff, eine Haltestation (6) zum Zurückhalten des Rohrkörpers (2a), eine Faltstation (7) zur Bildung eines Bodens (20) am Ende des Rohrkörpers (2a), wobei die Faltstation (7) eine Trommel (71) und eine Faltwalze (72) beinhaltet, die um parallel zueinander liegende Achsen drehend montiert sind, wobei die Faltwalze (72) eine Faltklinge (720) zum Falten einer Lasche (21) am Ende des Rohrkörpers (2a) in Zusammenwirkung mit einer Zange (710) am Umfang der Trommel (71) beinhaltet, um den Boden (20) zu bilden, wobei die Faltstation (7) Abrissmittel beinhaltet, die eine Abrissstange (722) zum Klemmen des Rohrkörpers (2a) gegen die Trommel (71) umfasst, wobei die Faltstation (7) und die Haltestation (6) konfiguriert sind, um zwischen sich eine Zugkraft auf den Rohrkörper (2a) auszuüben, wenn sich die Perforationen zwischen den beiden Stationen befinden, und einen Abschnitt des Rohrkörpers (2a) zu lösen, wobei die Maschine dadurch gekennzeichnet ist, dass die Abrissstange (722) angeordnet ist, um den Rohrkörperabschnitt zu trennen, während der Boden des Rohrkörperabschnitts bereits gebildet ist, wobei die Maschine Steuerungsmittel beinhaltet, um die Drehung der Trommel (71) zu steuern, um diese mit der Vorderseite des Rohrkörpers (2a) zu synchronisieren.
  2. Maschine nach Anspruch 1, wobei die Trommel (71) und die Faltwalze (72) mechanisch synchronisert sind.
  3. Maschine nach Anspruch 1, wobei die Trommel (71) und die Faltwalze (72) getrennt drehgesteuert sind.
  4. Maschine nach einem der vorstehenden Ansprüche, wobei die Abrissstange (722) von der Faltwalze (72) getragen wird.
  5. Maschine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Abrissmittel eine Abrisswalze beinhalten, die die Abrissstange trägt.
  6. Maschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass sie eine Perforationsstation (3) beinhaltet, um ein Band (2) aus einem weichen Werkstoff quer zu perforieren.
  7. Maschine nach Anspruch 6, wobei die Steuerungsmitel die Perforationsstation (3) steuern, um das Band (2) an einer gewählten Stelle zu perforieren.
  8. Maschine nach einem der vorstehenden Ansprüche, wobei die Steuerungsmittel die Haltestation (6) steuern.
  9. Maschine nach einem der vorstehenden Ansprüche, wobei die Trommel (71) mindestens zwei Zangen (710) beinhaltet, die über den Umfang verteilt sind, um die Vorderseite des Rohrkörpers (2a) zu ergreifen.
  10. Maschine nach einem der vorstehenden Ansprüche, wobei die Faltklinge (720) zyklisch versenkbar ist.
  11. Verfahren zur Herstellung von Beuteln, bei dem man einen Rohrkörper (2a) aus einem Band (2) aus einem in Intervallen quer perforierten weichen Werkstoff bildet, man einen Boden (20) am Ende des Rohrkörpers (2a) in einer Faltstation (7) bildet, die eine Trommel (71) und eine Faltwalze (72) beinhaltet, die um parallel zueinander liegende Achsen drehend montiert sind, wobei der Boden durch Falten einer Lasche (21) am Ende des Rohrkörpers (2a) durch eine Faltklinge (720), die durch die Faltwalze (72) getragen wird, in Zusammenwirkung mit einer Zange (710) am Umfang der Trommel (71) gebildet wird, und man einen Abschnitt des Rohrkörpers (2a) löst, indem man den Rohrkörper (2a) mit einer Abrissstange (722) gegen die Trommel (71) klemmt, und in einer Haltestation (6) zum Zurückhalten des Rohrkörpers (2a) durch Ausüben einer Zugkraft auf den Rohrkörper (2a), wenn sich die Perforationen zwischen den beiden Stationen befinden, wobei das Verfahren dadurch gekennzeichnet ist, dass man den Rohrkörperabschnitt (2a) nach Bildung des Bodens (20) löst, und man die Drehung der Trommel (71) steuert, um diese mit der Vorderseite des Rohrkörpers (2a) zu synchronisieren.
EP16742347.4A 2015-07-31 2016-06-29 Maschine und verfahren zur herstellung von beuteln Active EP3328628B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1557350A FR3039453B1 (fr) 2015-07-31 2015-07-31 Machine et procede de fabrication de sacs
PCT/FR2016/051619 WO2017021597A1 (fr) 2015-07-31 2016-06-29 Machine et procede de fabrication de sacs

Publications (2)

Publication Number Publication Date
EP3328628A1 EP3328628A1 (de) 2018-06-06
EP3328628B1 true EP3328628B1 (de) 2019-08-14

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EP16742347.4A Active EP3328628B1 (de) 2015-07-31 2016-06-29 Maschine und verfahren zur herstellung von beuteln

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US (1) US10800126B2 (de)
EP (1) EP3328628B1 (de)
FR (1) FR3039453B1 (de)
WO (1) WO2017021597A1 (de)

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FR3039453A1 (fr) 2017-02-03
US20180207897A1 (en) 2018-07-26
US10800126B2 (en) 2020-10-13
FR3039453B1 (fr) 2017-08-11
EP3328628A1 (de) 2018-06-06
WO2017021597A1 (fr) 2017-02-09

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