EP3148788A1 - Dispositif et procédé de formation d'une ouverture de fond dans un corps de sac - Google Patents

Dispositif et procédé de formation d'une ouverture de fond dans un corps de sac

Info

Publication number
EP3148788A1
EP3148788A1 EP15731827.0A EP15731827A EP3148788A1 EP 3148788 A1 EP3148788 A1 EP 3148788A1 EP 15731827 A EP15731827 A EP 15731827A EP 3148788 A1 EP3148788 A1 EP 3148788A1
Authority
EP
European Patent Office
Prior art keywords
wedge
bag body
transport
open end
tubular bag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15731827.0A
Other languages
German (de)
English (en)
Other versions
EP3148788B1 (fr
Inventor
Hans Peter Gerber
Andreas KOHLFÜRST
Herwig Worff
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.)
Lohia Corp Ltd
Original Assignee
Lohia Corp Ltd
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 Lohia Corp Ltd filed Critical Lohia Corp Ltd
Publication of EP3148788A1 publication Critical patent/EP3148788A1/fr
Application granted granted Critical
Publication of EP3148788B1 publication Critical patent/EP3148788B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/003—Opening or distending 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
    • 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
    • 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
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/04—Feeding sheets or blanks
    • 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
    • B31B70/262—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel 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
    • 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
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/003—Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular 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
    • B31B2160/10—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
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/56—Folding sheets, blanks or webs by rotary members co-operating with blades

Definitions

  • the invention relates to a device for forming a bottom opening between bag sections at the open end region of a tubular bag body, with a transport device for transporting the bag body in a transport direction transversely to its longitudinal extension, and with an opening device for forming the bottom opening between the bag sections at the open end portion of the tubular bag body wherein the opening means comprises at least one expansion element rotatable about an axis of rotation, which upon rotation between the sack sections at the open end region of the tubular
  • Sack body is insertable.
  • the invention further relates to a method for forming a bottom opening between bag sections at the open end region of a tubular bag body, wherein the bag body is transported transversely to its longitudinal extent in a transport direction and during transport a spreading element rotating about an axis of rotation between the bag sections at the open end region of the tubular bag body is introduced.
  • DE 1 611 701 discloses a device for opening the ends of transversely conveyed flat hose pieces in the manufacture of the cross bottoms of sacks and bags in soil making machines.
  • bottom tube sections are passed by means of a circulating gripper chain in the lateral position on ver ⁇ various processing stations.
  • a stationary suction box pair is provided, which has Saugloch Herbertn.
  • the suction boxes are connected via pipes to a vacuum pump.
  • the suction box are arranged diverging only a few millimeters in the transport direction.
  • the known design is not intended and suitable to allow the penetration of a spreader or ⁇ same between the tube layers.
  • the support plate in the prior art on the one hand on a compressed air nozzle whose air flow is directed into the air gap between the two film layers.
  • Lever arm is controlled by a connecting rod provided at its ends with a connecting rod and a double lever with roller by an eccentric.
  • this embodiment is disadvantageously unreliable, since the sickle-like Bodenlegeorgan can not always ensure a sufficient bottom opening. Therefore, malfunctions can occur in the prior art, which can lead to operational failures. In addition, the storage of Bodenlegeorgans is comparatively expensive.
  • the object of the present invention is to provide a device for forming a bottom opening, as stated at the outset, which the disadvantages of
  • the invention is the one hand to the goal of generating the bottom openings with high precision and reliability in continuous operation, the structural complexity of the device should be kept as low as possible. In addition, the maintenance effort should be reduced. Furthermore, a high speed anglesge ⁇ should be made possible.
  • the rotatable expansion element comprises a wedge element with at least one counter to the direction of rotation rising
  • End portion of the tubular bag body during his Transports on the transport device are spread apart to form the bottom opening between the bag sections at the open end portion of the tubular bag body
  • a wedge-shaped expansion element is therefore used according to the invention, the wedge surface entgege the direction of rotation, i. from a front end region to a rear end region, for which the bag body rises on the transport device.
  • the rotating wedge member is inserted between the superposed bag portions at the open end portion of the tubular bag body, wherein the bag portions are pressed apart by the rearwardly rising wedge surface of the wedge member.
  • Means of the wedge member the opening width of the bottom opening of the tubular bag body is continuously increased.
  • the bottom opening at the open end portion of the tubular bag body can be made very reliable ⁇ formed .
  • the wedge element preferably has a substantially vertical, ie perpendicular to the support surface for the bag body on the transport device extending axis of rotation, when the bag sections at the open end portion of the tubular bag body in a
  • the rising wedge surface is disposed at an angle to the horizontal transport plane, wherein the wedge surface extends obliquely upwards or obliquely downward depending on the version from the front end to the rear end.
  • the bag sections at the open end portion of the bag-shaped hose body for example, be bent by 90 ° from the support surface on the transport device.
  • the wedge element can be arranged to rotate about a horizontal axis of rotation. In this case, the wedge surface of the wedge member is arranged rising in a horizontal plane counter to the direction of rotation.
  • the circulation ⁇ movement of the wedge member is tuned with the Transportge ⁇ speed along the transport device, that the bottom opening is formed at the open end portion of the tubular bag body.
  • the system may have at least one wedge element on both sides in each case in order to form the bottom or upper-side opening.
  • the inventive design is characterized by low structural complexity, which can be dispensed with a mechanism for extending a multi-part spreader.
  • the pivot bearing of the spreading tool is particularly simple.
  • it is advantageous that the wedge-shaped expansion element works reliably in continuous operation with high production speed.
  • the maintenance can be kept low.
  • the opening means in at least two transport ⁇ direction of the tubular pouch body on successive expansion elements. Preference is given to the preceding in the transport direction of the tubular bag body wedge element for producing a first, narrower opening width of
  • Wedge element for establishing a second, wider opening width of the bottom opening at the open end portion of the tubular bag body set.
  • the wedge elements of successive spreading elements have different, in the transport direction of the tubular bag body increasing wedge heights preferably perpendicular to the support surface for the tubular bag body on the transport device.
  • the wedge height of the wedge member i. the maximum extent of the wedge element perpendicular to the support surface for the bag body on the
  • the bottom opening is thereby formed stepwise with structurally simple means.
  • each expansion element an adjusting device for adjusting the wedge height of the
  • adjusting device can have a longitudinal guide extended in the vertical direction for adjusting two sections or parts of the spreading element relative to one another.
  • locking means for locking the sections or parts of the expansion element in the set relative position
  • Sack body are arranged on the transport device.
  • the opening device therefore, preferably the upper bag portion of the tubular bag body is pushed upwards by means of the upper wedge surface of the wedge element, wherein the lower
  • the bottom opening on the tubular bag body can be made particularly reliable.
  • Sack body are pressed apart evenly around the center plane formed by the support surface on the conveyor to the bottom opening at the open end of the
  • the wedge members are temporarily during the orbital movement arranged overlapping, wherein the front end portion of the following in the direction of transport wedge element passes through the recess of the preceding in the transport direction wedge element.
  • the following in transport direction of the wedge element can already retract between the bag sections of the hose-shaped bag body ⁇ before the foregoing in the transport direction wedge element is still left the tubular bag body.
  • malfunctions in particular a jam of bag bodies in the opening device, are reliably avoided in this embodiment.
  • Transport direction overlapping wedge elements for insertion between the bag sections at the open end of the
  • a wedge member at one respect to the rotation direction rear end portion to a holding portion for holding a relative rear of the transport ⁇ direction portion of the tubular pouch body during insertion of the wedge surface of the following in the transport direction the wedge member in a front portion of the tubular pouch body.
  • Holding portion of the wedge member has a leading edge which is substantially at the same height as in
  • the height here refers to the distance of the
  • the wedge elements are therefore also arranged partially overlapping by means of recesses in order to prevent the already partially opened end region of the tubular sack body from closing again.
  • the wedge element in the direction of rotation arcuate, in particular circular arc-shaped, curved. Accordingly, the wedge elements are formed arcuately with respect to the support surface for the tubular bag body on the transport device. As a result, the bottom opening can be formed particularly reliable.
  • the wedge element is connected to a drive element coupled to a shaft element whose axis of rotation is preferably arranged substantially perpendicular to the support surface for the bag body on the transport device.
  • the wedge member preferably has a substantially vertical, i. arranged perpendicular to the support surface in the transport device, axis of rotation.
  • the wedge element at least one preferably substantially perpendicular to the support surface for the bag body On the transport device arranged plate member which forms a wedge surface on one end face. Accordingly, the wedge surfaces are preferably formed on the upper or lower edge of a substantially perpendicular to the support surface in the transport device plate member.
  • the wedge element at least one preferably substantially parallel to the support surface for the bag body on the
  • Transport device arranged disc part which has at the outer edge region with the wedge surface
  • the opening device has a pre-opening station in the transport direction, with which the bag sections can be converted from a flat superimposed state into a spaced-apart state at the open end region of the tubular bag body are.
  • the pre-opening station the bottom opening is released so far that the narrow end of the wedge element can enter between the bag sections at the open end region of the tubular bag body.
  • the pre-opening station has at least one guide element with a guide surface inclined for the transport direction for one of the sack sections at the open end region of the tubular sack body, wherein the
  • Sack section is connected to the guide surface.
  • the one bag section Passing through the pre-opening station, the one bag section is conveyed along the open end region of the tubular bag body along the guide surface of the guide element, wherein the one bag section is held in contact with the guide surface by means of the suction element. Due to the inclined arrangement of the guide surface of the one bag section is removed during transport along the Vorötechnischsstation of the other bag section, whereby the bag sections at the open end portion of the tubular bag body of the flat one above the other
  • a direct transfer of the bag body of the pre ⁇ opening station to the at least one spreading element for enabling ⁇ handy it is advantageous if the overlapping with the at least one expansion element is arranged at least seen a guide element of the Vorö Stammsstation in the transport direction. Accordingly, the wedge element between the bag sections of the blind ⁇ body intervenes as soon as the bag sections in the Vorö réellesstation in substantially the maximum opening width were apart ge ⁇ covered.
  • a continuous transition between the Vorö Samuelsstation and the formation of the bottom opening can be achieved with the expansion element.
  • Further opening means between the Vorö Samuelsstation with the inclined guide surface and the spreader are preferably not provided.
  • a drive element is provided for driving the guide element with the guide surface.
  • the guide ⁇ element having an input connected to the drive member guide ⁇ belt, especially an endless belt, to which the guide surface for the bag sections open
  • the suction port is entrained with the guide belt when the tubular bag body is transported through the pre-opening station.
  • a drive element can be provided in this embodiment, at least one drive roller on which the guide belt runs. Preferred are two
  • Drive rollers provided around which an endless belt is wrapped with the guide surface for the tubular bag body.
  • Vorö Stammsstation has two guide elements with diverging in transport ⁇ direction guide surfaces for the bag sections at the open end portion of the tubular bag body.
  • an upper guide element In a preferred embodiment is an upper
  • the tubular bag body is angled at the open end region at right angles to the transport plane.
  • the guide elements of the pre-opening station are arranged horizontally, wherein the distance between the guide surfaces increases in the transport direction increasingly.
  • Suction element has at least one provided on the guide surface suction port for sucking one of the bag sections.
  • the suction opening is connected to negative pressure generating means, with which the associated bag section is sucked to the guide surface.
  • exactly one suction opening is arranged on the guide surface.
  • Opening angle could be achieved.
  • This limitation of the prior art is due to the fact that the successive ⁇ suction openings when opening the bag body over low angles beyond would cause stresses in the bag body, which could solve the bag body of the guide surface.
  • the prior art in the transport direction after the suction belt further Vorö Stamms coupleden, in particular a compressed air nozzle and counter-rotating suction ⁇ box pairs, provided to the unfolding of the bag bottom enable.
  • the arrangement of a single suction opening on the guide surface makes it possible for the bag body to be sucked onto the guide surface substantially at points.
  • the guide surface can be comparatively large
  • the bag body is therefore reliably held on the guide surface. Due to the selective suction of the bag section this can be drawn on the one hand linear and on the other hand along a curve.
  • the endless belt forming the guide element has exactly two intake openings.
  • an endless belt is provided as a guide element, which is provided with exactly two suction openings.
  • the distance between the two suction ports is preferably substantially equal to half the length (i.e., half the circumference) of the endless belt.
  • both intake ports may be inactive. This may be the case in particular when both intake openings are in the region of drive rollers
  • Pre-opening station has at least one negative pressure generating unit with a vacuum chamber adjacent to the guide surface of the guide member with the suction port.
  • the vacuum ⁇ chamber is preferably disposed in a housing within the guide ⁇ elements, which preferably has an endless belt.
  • the vacuum chamber is connected via a suction line with the negative pressure generating means.
  • On the other side of the vacuum chamber of the endless belt is passed, which has the suction port. This will the associated bag section applied to the guide surface of the endless belt.
  • the problem underlying the invention is also achieved by a method of the type mentioned, in which the rotatable expansion element has a wedge element with at least one counter to the direction of rotation rising wedge surface, with which the bag sections at the open end of the
  • tubular bag body be spread apart during its transport on the transport device to the
  • Fig. La schematically a perspective view of a plant for the production of sacks, in which an inventive
  • Opening means is provided for opening the end portion of a bag body
  • Fig. Lb schematically shows a part of a pre-opening station of the system according to Fig. La;
  • Fig. 2 to 7 are schematic views of part of the
  • Fig. La shows a part of a plant 1 for the production of sacks, wherein a material web, in particular of a fabric ⁇ material, is processed in various stations to produce Kreuzêtoder funnelêtventilsburgen.
  • the plant 1 has a (not shown) separating device to the
  • the tubular bag body 2 consist of two stacked bag sections 2 ', 2'', wherein each bag section 2', 2 '' can be constructed of several layers of different material.
  • the tubular bag bodies 2 are transferred to a transport device 3.
  • the transport device 3 the bag bodies 2 are successively conveyed on a substantially horizontal bearing surface 4 of the transport device 3 in a flat state in the transport direction 5 transversely to their longitudinal extension axis 6 shown schematically in FIG.
  • the transport device 3 with an opening device 7 for forming a bottom opening 8 between the bag sections 2 ', 2' 'at the open end portion 9 of the tubular bag body 2 is connected.
  • the opening device 7 has a Vorö Stammsstation 23, with which the bag sections 2 ', 2' 'at the open end portion 8 of the tubular bag body 9 from a flat superimposed state in a spaced-apart state can be transferred.
  • the pre-opening station 23 has an upper guide element 24 with an upper guide surface 24 'rising upward in the transport direction 5 and a lower guide element 25 with a lower guide surface 25' sloping downward in the transport direction 5.
  • guide elements 24, 25 endless belts are provided in the embodiment shown, which are driven by drive rollers 24 '', 24 '''.
  • the guide elements 24, 25 are each connected to a suction element 26 for sucking the associated bag section 2 ', 2''.
  • the suction members 26 each have at least one suction ⁇ opening 26 'on the guide surface 24', 25 'of the endless belt.
  • each endless belt has exactly two intake openings 26 '(compare Fig. 1b).
  • the pre-opening station 23 has a vacuum-generating unit 27 for each guide element 24, 25.
  • the negative pressure generating units 27 each have a negative pressure chamber 27 ', which adjacent to the
  • Guide surface 24 ', 25' of the upper 24 and lower guide ⁇ elements 25 extends.
  • the vacuum chamber 27 ' is provided in a housing 27'', which is arranged within the guide element 24, 25.
  • the suction opening 26 'of the guide element 24, 25 In order to apply a negative pressure to the suction opening 26 'of the guide element 24, 25, the
  • the opening means 7 in the transport direction 5 after the Vorö Stammsstation 23 a plurality of spreading elements 10 which are each rotatably mounted about a vertical axis of rotation 11.
  • the bottom opening 8 of the tubular bag body 2 is sufficiently open that the spreading elements 10 between the bag sections 2 ', 2' 'at the open end portion 9 of the tubular bag body 2 can penetrate.
  • the spreading elements 10 travel between the bag sections 2 ', 2 "at the open end region 9 of the tubular bag body 2, wherein the bottom opening 8 is formed.
  • the opening device 7 follows in the transporting direction 5 a bottom folding station 28, in which the geometry of the opening is brought into a correct, right-angled position with the aid of finger elements 29. Thereafter, the tubular bag body 2 can be processed in a conventional manner to the finished bags.
  • the spreading elements 10 are shown at various stages in the formation of the bottom opening 8.
  • the tubular bag bodies 2 can in this case be conveyed through the opening device 7 in a state lying flat on one another in a horizontal plane, as shown in FIGS. 3 to 7.
  • the floor area can be angled during transport through the opening device 7 (compare schematically Fig. 2).
  • the tubular bag body 2 is transported straight with partially released bottom opening 8 of the Vorö Stammsstation 23 to the spreading elements 10.
  • the opening width of the bottom opening 8 is gradually increased, so that the bottom opening 8 is completely released after the expansion elements 10.
  • the rotatably mounted spreading elements 10 each have a wedge element 12, against which the direction of rotation 13, i. from the front end region to the rear end region, rising wedge surfaces 14 are formed.
  • the wedge elements 12 urge with the
  • Each wedge element 12 has an upper wedge surface 14 'for an upper sack section 2' and a lower wedge surface 14 '' for a lower sack section 2 ''.
  • the wedge surfaces 14 ', 14' 'of the wedge elements 12 are each arranged at an acute angle to the horizontal support surface 4 for the tubular bag body 2 on the transport device 3.
  • the wedge member 12 is vertical with a substantially, that is connected perpendicular to the supporting surface ⁇ 4 for the bag body 2 on the conveyor 3, arranged shaft member 15 with a
  • the wedge surfaces 14 are formed on substantially perpendicular plate elements 16.
  • the front wedge element 12 'seen in the transport direction 5 has a single plate element 16.
  • the central wedge element 12 "seen in the transport direction 5 and the rear wedge element 12 '" in the transport direction 5 each have an upper plate part 16' which has the upper wedge surface 14 'on an upper end side and a lower plate part 16 ", which on a lower end face, the lower wedge surface 14 '', on.
  • Disk parts 17 which are coupled on the one hand with the shaft member 15 and on the other hand, at the outer edge regions, the plate parts 16 with the wedge surfaces 14; 14 ', 14''wear.
  • the opening device 7 in the embodiment shown has three spreading elements 10 which follow one another in the transport direction 5 of the tubular bag body 2.
  • the individual spreading elements 10 have wedge elements 12, which different, in
  • the wedge height h is measured here by the distance between the viewed in the direction of rotation 11 rear end of the wedge surface 14 and the support surface 4 for the tubular bag body 2 on the conveyor 3.
  • the opening width b of the bottom opening 8 (see Fig. 6) of Wedge element 12 to wedge element 12 increases.
  • the wedge elements 12, as seen in the direction of rotation in the transport direction 5, are partially overlapped by means of recesses 18 in order to achieve a continuous increase in the opening width b of the bottom opening 8.
  • front wedge element 12 ' has a recess 18' for
  • Wedge element 12 '' a recess 18 '' for the release of the
  • Wedge element 12 '' 'on
  • the wedge element 12 has holding sections 19 at a rear end region with respect to the direction of rotation 13, with respect to which
  • the holding portions 19 of the wedge member 12 at least one
  • Leading edge 22 in the embodiment shown in each case an upper guide edge 22 'and a lower guide edge 22'', which at substantially the same height as that in the direction of rotation 13th seen rear end of the associated wedge surfaces 14 ', 14''of the respective wedge element 12 are arranged.

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  • Supplying Of Containers To The Packaging Station (AREA)
  • Making Paper Articles (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

L'invention concerne un dispositif et un procédé de formation d'une ouverture de fond (8) entre des portions de sac (2', 2'') au niveau de la zone d'extrémité ouverte (9) d'un corps de sac (2) tubulaire, comprenant un système de transport (3) servant à transporter le corps de sac (2) dans un sens de transport (5) transversal par rapport à une projection longitudinale (6), et comprenant un système d'ouverture (7) destiné à former l'ouverture de fond (8) entre les portions de sac (2', 2'') au niveau de la zone d'extrémité ouverte (9) du corps de sac (2) tubulaire. Le système d'ouverture (7) possède au moins deux éléments d'écartement (10) sous la forme d'éléments formant cale (12 ; 12', 12'', 12''') consécutifs dans le sens du transport (5) du corps de sac (2) tubulaire, lesquels ont des surfaces de cale (14 ; 14', 14'') qui remontent à l'opposé du sens de rotation (13), avec lesquelles les portions de sac (2', 2'') peuvent être écartées l'une de l'autre au niveau de la zone d'extrémité ouverte (9) du corps de sac (2) tubulaire pendant son transport sur le système de transport (3). Les éléments formant cale (12 ; 12', 12'', 12''') des éléments d'écartement (10) consécutifs possèdent des hauteurs de cale (h) différentes qui augmentent dans le sens de transport (5) du corps de sac (2) tubulaire, de préférence perpendiculairement à la surface portante (4) pour les corps de sac (2) tubulaires sur le système de transport (3).
EP15731827.0A 2014-05-20 2015-05-20 Dispositif et procédé pour former un fond ouvert sur un corps de sac Active EP3148788B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50354/2014A AT515831B1 (de) 2014-05-20 2014-05-20 Vorrichtung und Verfahren zum Ausbilden einer Bodenöffnung
PCT/AT2015/050127 WO2015176094A1 (fr) 2014-05-20 2015-05-20 Dispositif et procédé de formation d'une ouverture de fond dans un corps de sac

Publications (2)

Publication Number Publication Date
EP3148788A1 true EP3148788A1 (fr) 2017-04-05
EP3148788B1 EP3148788B1 (fr) 2017-10-18

Family

ID=53489724

Family Applications (1)

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EP15731827.0A Active EP3148788B1 (fr) 2014-05-20 2015-05-20 Dispositif et procédé pour former un fond ouvert sur un corps de sac

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EP (1) EP3148788B1 (fr)
CN (1) CN106660295B (fr)
AT (1) AT515831B1 (fr)
BR (1) BR112016026891B1 (fr)
TW (1) TWI640420B (fr)
WO (1) WO2015176094A1 (fr)

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CN110281583A (zh) * 2019-07-24 2019-09-27 浙江正信机械有限公司 用于无纺布立体袋制袋机的底部折袋机构
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
CN112722463B (zh) * 2021-03-01 2023-04-07 广东宏川环宇智能装备有限公司 高速包装机的四边封装置

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DE640287C (de) * 1933-09-21 1936-12-29 Verpackungsbedarf G M B H Vorrichtung zum Aufziehen von Kreuzboeden
DE912045C (de) 1952-02-17 1954-05-24 Fischer & Krecke Kg Bodenlegevorrichtung fuer Kreuzbodenbeutelmaschinen
DE1611701B1 (de) * 1967-09-01 1971-10-07 Windmoeller & Hoelscher Verfahren und Vorrichtung zum OEffnen der Enden quergefoerderter flachliegender Schlauchstuecke bei der Herstellung der Kreuzboeden von Saecken und Beuteln in Bodenmachermaschinen
SE342180B (fr) * 1971-08-19 1972-01-31 Akerlund & Rausing Ab
IT1068052B (it) * 1976-12-13 1985-03-21 Azionaria Costruzioni Acma Spa Macchina per la formazione ed il riempimento di buste
US5279095A (en) * 1990-08-22 1994-01-18 Sig Schweizerische Industrie-Gesellschaft Apparatus for spreading open flat bags
AT406755B (de) 1998-10-05 2000-08-25 Starlinger & Co Gmbh Vorrichtung zum öffnen von schlauchförmigen sackkörpern
EP2441574B1 (fr) 2010-10-14 2013-05-15 Starlinger & Co Gesellschaft m.b.H. Procédé et dispositif de formation de fonds ouverts sur des zones d'extrémité de corps de sachets tubulaires

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See also references of WO2015176094A1 *

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Publication number Publication date
CN106660295B (zh) 2019-01-29
AT515831B1 (de) 2016-07-15
WO2015176094A1 (fr) 2015-11-26
CN106660295A (zh) 2017-05-10
EP3148788B1 (fr) 2017-10-18
AT515831A1 (de) 2015-12-15
BR112016026891B1 (pt) 2021-02-23
TW201600325A (zh) 2016-01-01
TWI640420B (zh) 2018-11-11

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