• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Device and method for forming a bottom opening (8) between bag sections (2 ', 2' ') at the open end region (9) of a tubular bag body (2), with a transport device (3), and with an opening device (7) which has a Pre-opening station (23), with which the bag sections (2 ', 2' ') at the open end region (9) of the tubular bag body (2) from a flat superimposed state in a spaced-apart state can be transferred, and at least one about an axis of rotation ( 11) has a rotatable expansion element (10). The Voröffnungsstation (23) has guide elements (24, 25) with the transport direction (5) inclined guide surfaces (24 ', 25'), wherein the guide elements (24, 25) each with a drive element (24 '', 24 '' ') connected endless belts with two suction ports for sucking one of the bag sections (2', 2 '') and wherein the guide elements (24, 25) in the transport direction (5) seen overlapping with the at least one expansion element (10) are arranged.
    公开号:AT515832A1
    申请号:T50358/2014
    申请日:2014-05-20
    公开日:2015-12-15
    发明作者:Hans Peter Gerber；Andreas Kohlfürst；Herwig Worff
    申请人:Lohia Corp Ltd；
    IPC主号:
    专利说明:

    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 region of the tubular bag body, wherein the opening means a
    Pre-opening station has, with which the bag sections at the open end portion of the tubular bag body from a flat superimposed state can be converted into a spaced-apart state.
    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 in a transport direction transversely to its longitudinal extent and during transport a bottom opening is formed between the bag sections at the open end portion of the bag bag body, the bag sections at the open end portion of the tubular bag body be transferred in a Voröffnungsstation from a flat superimposed state in a spaced-apart state.
    Equipment for making sacks has long been known in the art. These plants include the provision of material hoses obtained either by producing tubular webs or joining the longitudinal edges of flat webs into a tubular structure, cutting the material tubes of tubular sac bodies of suitable length and forming a sack by appropriately opening, folding and closing an open end of the sack tubular body. Various solutions have been proposed for opening the sack bottom in the prior art.
    From DE 912 045 a bottom-laying apparatus for cross-bottom-bag machines is known in which a sickle-shaped bottoming member is provided which can move into a pre-opened end of a hose. The sickle-like Bodenlegeorgan runs around a rotational axis which is rotatably mounted on a lever arm of a rotatably mounted double lever. The lever arm is controlled via an articulated connecting rod at its ends and a double lever with roller from an eccentric. By pivoting the axis of rotation of the floor-laying member about the fulcrum, the floor-laying member performs a pivotal movement in addition to the orbital motion caused by gears.
    However, this embodiment is disadvantageously unreliable because the sickle-like floor-laying member can not always ensure a sufficient bottom opening. Therefore, in the prior art, malfunctions can occur which can lead to operational failures. In addition, the storage of the floor-laying organ is comparatively complicated.
    Other devices for opening hose trays are known, for example, from WO 2012/049040 or AT 406 755 B.
    In contrast, the object of the present invention is to provide an apparatus and a method for forming a bottom opening, as mentioned above, with which or. with which mitig the disadvantages of the prior art. be eliminated. Accordingly, the invention on the one hand aims to produce the bottom opening on the tubular bag body with high precision and reliability in continuous operation, while the construction cost of the device should be kept as low as possible. In addition, the maintenance is to be reduced. Furthermore, a high production speed should be made possible.
    This object is achieved by a device according to claim 1 and a method according to claim 20. Preferred embodiments are given in the dependent claims.
    According to the invention, the pre-opening station has at least one guiding element with a conveying surface inclined for the transport direction for one of the sack sections at the open end region of the tubular sack body, wherein the guiding surface is connected to a suction element for sucking the sack section onto the guiding surface.
    When passing through the pre-opening station, the one bag section is conveyed along the guide surface of the guide element at the open end region of the tubular bag body, the one bag section being held in contact with the guide surface by the suction element. Due to the inclined arrangement of the guide surface, one bag section is removed from the other bag section during transport along the pre-opening station whereby the bag portions at the open end portion of the tubular bag body are transferred from the flat superimposed state at the entrance of the pre-opening station to the spaced-apart, partially openable bottom opening condition. This design is characterized by high precision and reliability. Furthermore, malfunctions can be prevented. be reduced to a minimum. In addition, a high conveying speed can be achieved. By the pre-opening station, the bottom opening can be released so far that the bottom opening, as will be described further below, can be completed.
    In order to release the bottom opening during transportation of the tubular bag body, it is favorable if a drive element is provided for driving the guide element with the guide surface. When moving the guide member, the bag portion is held by the suction on the guide surface.
    In this embodiment, it is advantageous if the guide element has a guide belt connected to the drive element, in particular an endless belt, on which the guide surface is formed for one of the bag sections at the open end region of the tubular bag body. Thus, the suction port is entrained with the guide belt when the tubular bag body is transported through the pre-opening station. At least one drive roller may be provided as drive element in this embodiment, on which the guide belt runs. Preferably, two drive rollers are provided, around which an endless belt is looped with the guide surface for the tubular bag body.
    In order to make the bottom opening uniform at the open end portion of the tubular bag body, it is preferable that the pre-opening station has two guide members with guide-direction-diverging guide surfaces for the bag portions at the open end portion of the bag-shaped bag body. In a preferred embodiment, an upper guide element is provided with an upper guide surface rising in the transport direction and a lower guide element with a lower guide surface sloping down in the transport direction. In an alternative embodiment, the tubular bag body at the open end region is angled perpendicular to the transport plane. In this embodiment, the guide elements of the opening station are arranged horizontally, wherein the distance between the guide surfaces in the transport direction increasingly increases.
    In order to hold the bag section to the guide surface during transport through the pre-opening station, it is favorable if the suction element has at least one suction opening provided on the guide surface 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.
    Particularly preferable is an embodiment in which the pre-opening station has at least one negative pressure generating unit having a negative pressure chamber adjacent to the guide surface of the guide member with the suction port. The vacuum chamber is preferably arranged in a housing within the guide element, which preferably has an endless belt. On the one hand, the vacuum chamber is connected to the suction via a suction line
    Negative pressure generating means connected. On the other side of the vacuum chamber, the endless belt is passed, which has the suction opening. Thereby, the associated bag portion is applied to the guide surface of the endless belt.
    According to a particularly preferred embodiment, the opening device has at least one spreader element which is rotatable about a rotation axis and which, when rotating between the spools, rotates
    Sack sections at the open end portion of the tubular bag body is insertable, wherein the rotatable expansion element comprises a wedge element with at least one counter to the direction of rotation wedge surface with which the bag portions at the open end portion of the tubular bag body during transport on the transport means are spread apart to form the bottom opening between the bag sections at the open end portion of the tubular bag body , Depending on the design, openings can be formed on at least one, in particular also on both end regions of the tubular bag body. For this purpose, the installation may have at least one wedge element on both sides in each case in order to form the top opening.
    In order to allow the expansion element to penetrate into the open end region of the tubular bag body, in the transporting direction in front of the at least one expansion element, the opening station is provided, with which the bag sections can be converted from a flat superimposed state to a flat spaced-apart state at the open end region of the tubular bag body. In 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.
    In order to complete the bottom opening after the pre-opening station, in this embodiment it is preferred to use a wedge-shaped spreader element whose wedge surface is opposite to the direction of rotation, i. from a front end portion to a rear end portion for which bag body on the transport means rises. In transporting the tubular bag body through the opening means, the rotating wedge member is inserted between the stacked bag sections at the open end portion of the tubular bag body, the bag sections being pushed apart by the rearwardly rising wedge surface of the wedge member. By means of the wedge member, the opening width of the bottom opening of the tubular bag body is continuously increased. Advantageously, therefore, the bottom opening can be formed particularly reliably at the open end region of the tubular bag body. As a result, the service life of the opening device can be substantially reduced. The wedge member preferably has a substantially vertical, i. Rotary axis extending perpendicularly to the support surface for the bag body on the transport device when the bag sections are conveyed at the open end region of the tubular bag body in a horizontal position through the opening device. In this embodiment, the rising wedge surface is arranged at an angle to the horizontal transport plane, wherein the wedge surface extends obliquely upwards or obliquely downwards, depending on the design, from the front end to the rear end. Alternatively, the bag portions at the open end portion of the bag-shaped tube body may be bent for example by 90 ° from the support surface on the transport means. In this embodiment, the wedge member may 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 against the direction of rotation. The orbital motion of the wedge member is tuned with the transport speed along the transport means such that the bottom opening is formed at the open end portion of the tubular bag body. The inventive design is characterized by little structural effort, which can be dispensed with a mechanism for AusSfahren a multi-part spreader. In addition, the pivotal mounting of the spreading tool is particularly simple. Furthermore, it is advantageous that the wedge-shaped spreader function reliably in continuous operation with high production speed. Conveniently, the maintenance effort can be kept low.
    In order to spread the bag sections apart in opposite directions at the open end region of the bag body, it is advantageous if the wedge element has two wedge surfaces, preferably an upper wedge surface and a lower wedge surface, in the transport direction, the upper wedge surface and the lower wedge surface preferably each at an acute angle to the support surface for the tubular one
    Sack body are arranged on the transport device. In the opening device, therefore, preferably, the upper bag portion of the tubular bag body is pushed up by the upper wedge surface of the wedge member, the lower bag portion being pushed down by the lower wedge surface of the wedge member. As a result, the bottom opening on the tubular bag body can be made particularly reliable. Preferably, the upper wedge surface and the lower wedge surface are arranged symmetrically with respect to the support surface for the tubular bag body on the transport means. The bag sections of the tubular bag body can thereby be pressed apart uniformly about the median plane formed by the support surface on the transport means to form the bottom opening at the open end portion of the tubular bag body.
    In order to form the bottom opening at the open end region of the tubular bag body having the required opening width, it is advantageous if the opening device has at least two spreading elements which follow one another in the transport direction of the tubular bag body. Preferably, the wedge element seen in the direction of transport of the tubular sack body is adapted for producing a first, narrower opening width of the bottom opening and the following wedge element seen in the transport direction for establishing a second, wider opening width of the bottom opening at the open end region of the tubular sack body.
    For this purpose, it is favorable if the wedge elements of successive spreading elements have different wedge heights increasing in the transporting direction of the tubular sack body, preferably perpendicular to the support surface for the tubular sack body on the transport means. Thus, the wedge height of the wedge member, i. the maximum extension of the wedge element perpendicular to the support surface for the bag body on the transport device, viewed from the wedge element to the wedge element in the transport direction. Advantageously, the bottom opening is formed stepwise by constructive means.
    In order to enable a continuous shaping of the bottom opening on the tubular bag body, it is advantageous if the spreading elements have overlapping wedge elements during the rotation in the transport direction of the tubular bag body, wherein a wedge element preceding in the transport direction has a recess for the passage of a wedge element following in the direction of transport. In this embodiment, the wedge members are overlapped at times during the revolution, with the leading end portion of the wedge member following in the direction of transport passing through the recess of the wedge member preceding in the direction of conveyance. Advantageously, therefore, the wedge element following in the transport direction can already travel in between the bag sections of the tubular bag body before the wedge element which precedes in the transport direction has still emerged from the bag-shaped bag body. Advantageously, in this embodiment, malfunctions, in particular a jam of bag bodies in the opening device, are reliably avoided.
    To open the bottom portion of conventional bag bodies, it has been found to be particularly advantageous to have exactly three spreaders which, when rotated in the direction of transport, have overlapping wedge members for insertion between the bag portions at the open end portion of the bag-shaped bag body. This design allows for continuous formation of the bottom opening while largely avoiding malfunctions.
    According to a particularly preferred embodiment, a wedge element has, at a rear end region with respect to the rotational direction, a holding section for holding a rear region of the tubular bag body with respect to the transport direction when inserting the wedge surface of the wedge element following in the direction of transport into a front region of the tubular bag body. Advantageously, the tubular bag body can thus be held in a partially open state by means of a wedge element, while the wedge element following in the transport direction enters the open end region of the bag-shaped bag body in order to widen the bottom opening.
    In this embodiment, it is advantageous if the holding portion of the wedge member has a leading edge which is located substantially at the same height as the rear end of the wedge face viewed in the direction of rotation. The height hereby refers to the distance of the leading edge from the support surface for the tubular bag body to the transport means , By the leading edge of the wedge member, the open end portion on the bag-shaped bag body is maintained in a partially opened state when the following wedge member is dipped in the bottom portion of the bag-shaped bag body to gradually increase the opening width of the bottom opening.
    In order, on the one hand, to allow an overlapping arrangement of successive spreading elements and, on the other hand, to hold the tubular bag body in the instantaneous, partially opened state, it is advantageous if the wedge element between the wedge surface and the holding section has the recess for the passage of the wedge element following in the direction of transport. Accordingly, the wedge member has the wedge surface at the front end (viewed in the rotational direction) and the retaining portion at the rear end, with the recess for releasing the rotational motion of the following wedge member being provided between the wedge surface and the retaining portion. The wedge elements are therefore also partially overlapped by means of recesses, in order to prevent the ready-opened end region of the tubular sack body from falling again.
    In order to facilitate the insertion of the wedge element in the open end region of the tubular bag body, it is advantageous if the wedge element in the direction of rotation arcuate, in particular circular arc, curved. Accordingly, the wedge members are formed arcuately with respect to the support surface for the tubular bag body on the transport means. As a result, the bottom opening can be formed particularly reliable.
    In order to set the spreader in rotation, it is advantageous, when the wedge member is connected to a drive element coupled to a shaft member, the axis of rotation preferably substantially perpendicular to the support surface for the
    Sack body is arranged on the transport device. The wedge element preferably exhibits a substantially vertical, i. perpendicular to the support surface in the transport device arranged, axis of rotation.
    With regard to a structurally simple, stable design, it is expedient for the wedge element to have at least one plate part which is arranged substantially perpendicular to the support surface for the sack body on the transport device and which forms a wedge surface on one end side. According to the invention, the wedge surfaces are preferably formed on the upper or lower edge of a plate part which is substantially perpendicular to the support surface in the transport device.
    For manufacturing reasons, it is preferably provided that the wedge element has at least one disk part, which is preferably arranged substantially parallel to the bearing surface for the bag body on the transport device and which is connected at the outer edge region to the plate part having the wedge surface.
    The object underlying the invention is also achieved by a method of the kind set forth in which at least one of the sack sections in the pre-opening station is transported along a guide surface inclined to the transport direction, the sack section being sucked onto the guide surface.
    The invention will be further explained below by means of a preferred embodiment, to which, however, it should not be restricted. In the drawing show
    1a schematically shows a perspective view of a sack making installation in which an opening device according to the invention is provided for opening the end area of a bag body;
    Fig. 1b schematically shows part of a pre-opening station of the plant according to Fig. 1a;
    2 to 7 show diagrammatically views of a part of the opening device according to FIG. 1a during the formation of the blind opening by means of wedge-shaped spreading elements which spread apart the stacked sack sections at the open end region of the tubular sack body.
    Fig. 1a shows a part of a plant 1 for the production of bags, wherein a material web, in particular of a fabric material, is processed in different stations to finished cross bottom or cross bottom valve sacks. The plant 1 has a separating device (not shown) for separating the material web into tubular bag bodies 2. The tubular bag bodies 2 consist of two overlying 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. In the transport device 3, the bag bodies 2 will be successively conveyed on a substantially horizontal support surface 4 of the transport device 3 in a flat state in the transport direction 5 transversely to its longitudinal axis 6 schematically visible in FIG.
    As shown in Fig. La, cf. 2 to 6, furthermore, the transport device 3 is connected to an opening device 7 for forming a bottom opening 8 between the bag sections 2 ', 2 "at the open end region 9 of the tubular bag body 2. The opening device 7 has a pre-opening station 23 with which the sack sections 2 ', 2 "can be transferred from a flat superimposed state to a spaced-apart state at the open end region 8 of the tubular sack body 9.
    As can be seen from FIG. 1 a, the pre-opening station 23 has an upper guide element 24 with an upper guide surface 24 'ascending upward in the transport direction 5 and a lower guide element 25 with a lower guide surface 25' falling down in the transport direction 5. As 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 elements 26 each have at least one
    Inlet opening 26 'on the guide surface 24', 25 'of the endless belt on. In the embodiment shown, each endless belt has exactly two suction openings 26 '(see Fig. 1b).
    As can be seen from FIG. 1b, the pre-opening station 23 has one negative-pressure-generating unit 27 for each guide element 24, 25. The negative pressure generating units 27 each have a negative pressure chamber 27 'extending adjacent to the guide surface 24', 25 'of the upper 24 and lower guide members 25, respectively. The vacuum chamber 27 'is provided in a housing 27' 'which is disposed within the guide member 24, 25. In order to apply a negative pressure to the mammalian opening 26 'of the guide member 24, 25, the negative pressure chamber 27' is connected to vacuum generating means (not shown), such as a vacuum pump, via a suction pipe 27 '". When the tubular bag body 2 is guided by the pre-opening station 23, the bag sections 2 ', 2 "are applied to the guide surfaces 24', 25 'of the guide elements 24, 25 which run apart in the transporting direction 5. Thereby, the bag sections 2 ', 2 "are continuously transferred from the flat superimposed state at the entrance of the pre-opening station 23 into the spaced-apart, partially open bottom opening 8 state.
    As can be seen from Fig. La further, the opening device 7 in the transport direction 5 after the opening station 23 a plurality of spreading elements 10, which are each mounted rotatably about a vertical axis of rotation 11. By the Voröffnungsstation 23, the bottom opening 8 of the tubular bag body 2 is sufficiently opened that the spreaders 10 between the bag sections 2 ', 2' 'can penetrate the open end region 9 of the tubular bag body 2. During the rotational movement, the spreading elements 10 enter between the bag sections 2 ', 2 "at the open end region 9 of the tubular bag body 2, the bottom opening 8 being formed.
    As can be seen from Fig. La, the opening device 7 follows in the transport direction 5 a
    Floor folding station 28, in which the geometry of the opening with
    Help of finger elements 29 is brought into a correct, rectangular position. Thereafter, the tubular bag bodies 2 may be processed into the finished bags in a manner known per se.
    In FIGS. 2 to 7, the spreading elements 10 are shown at different stages in the formation of the bottom opening 8. This tubular bag body 2 can in this case in a flat superposed on a horizontal plane state, as shown in FIG. 3 to 7 are conveyed through the opening means 7. Alternatively, the floor area may be angled during transport through the opening means 7 (see Fig. 2).
    According to Fig. 2, 3, the tubular bag body 2 is just partially shared bottom opening 8 of the
    According to FIGS. 3 to 6, the opening width of the bottom opening 8 isgraduated, so that the bottom opening 8 is completely released after the spreader elements 10.
    As can be seen from Figures 2 to 7, the rotatably mounted spreader elements 10 each comprise 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. When transporting the tubular sack bodies 2 on the conveyor 3, the wedge elements 12 with the wedge surfaces 14 increasingly push the opposite sack sections 2 ', 2 "of the open end region 9 of the tubular sack body 2, whereby the bottom opening 8 between the sack sections 2', 2" at the open end region 9 the tubular bag body 2 is generated. 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.
    As further seen in Figures 2 through 7, the wedge member 12 is substantially vertical, i. perpendicular to
    Support surface 4 for the bag body 2 on the
    Transport means 3, arranged shaft element 15 which is set with a (not shown) drive in rotational movement. In the embodiment shown, the wedge surfaces 14 are formed on substantially vertical plate members 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 is on a lower end side the lower wedge surface 14 ". The plate elements 16; 16 ', 16' 'are in a plan view according to the direction of rotation 13 arc curved. In addition, the wedge elements 12 have substantially in a horizontal plane extended disc 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.
    As can further be seen from FIGS. 2 to 7, 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 expansion elements 10 have wedge elements 12 which have different wedge heights h increasing in the transport direction 5 of the tubular bag body 2. In this case, the wedge height is measured by the distance between the rear end of the wedge surface 14 viewed in the direction of rotation 11 and the sack body 2 resting surface 4 on the transport device 3. As a result, the opening width b of the bottom opening 8 (see Fig. 6) is widened from wedge element 12 to wedge element 12 ,
    As can be further seen from FIGS. 2 to 7, the wedge elements 12, when viewed in the direction of rotation in the transporting direction 5, are partially overlapped by means of cutouts 18 in order to achieve a continuous increase in the opening width b of the bottom opening 8. For this purpose, the front wedge element 12 'seen in the transport direction 5 has a recess 18' for the passage of the middle wedge element 12 "following in the transport direction 5. Correspondingly, the middle wedge element 12 "has a recess 18" for releasing the rotational movement of the rear wedge element 12 "'which is seen in the transporting direction 5.
    As can further be seen from FIGS. 2 to 7, the wedge element 12 has a rear end region holding sections 19 with respect to the direction of rotation 13, with which rear regions 20 of the sack sections 2 ', 2 "are held in the instantaneous opening state with respect to the transport direction 5, while the wedge surface 14 of FIG in the transport direction 5 following wedge element 12 in front areas 21 of the bag sections 2 ', 2' 'the same bag body 2 are introduced. For this purpose, the holding portions 19 of the wedge element 12 have at least one leading edge 22, in the embodiment shown each an upper leading edge 22 'and a lower leading edge 22 "substantially at the same height as the rear end of the associated wedge surfaces 14', 14 viewed in the direction of rotation 13 '' derjeweiligen wedge element 12 are arranged.
    In the embodiment shown, on the one hand the front wedge element 12 'seen in the transporting direction 5 has holding sections 19' which are assigned to the upper sack section 2 'and the lower sack section 2' 'of the tubular sack body 2. Thereby, the adoption of the tubular bag body 2 from the front wedge member 12 'to the middle wedge member 12 "can be made reliable. On the other hand, as seen in the transport direction 5 mean wedge element 12 '' corresponding holding portions 19 '' on zuvererkstelligen to a reliable transfer of the bag body 2 to the transport direction 5 seen in the rear wedge element 12 '' '.
    The terms "bottom" and "top" For the arrangement of various components, such as the wedge elements, are used in the present disclosure exemplified for a preferred operating position, in which the bag sections 2 ', 2' 'are transported at the open end portion 9 of the tubular bag body 2 in a horizontal position.
    Of course, however, an embodiment may be provided in which the bag sections 2 ', 2' ', for example, bent by 90 ° from the transport plane. In this embodiment, then the components of the system, such as the wedge elements 12, arranged tilted at a corresponding angle.
    权利要求:
    Claims (20)
    [1]
    Claims 1. A device for forming a bottom opening (8) between bag sections (2 ', 2 ") at the open end region (9) of a tubular bag body (2), comprising a transport device (3) for transporting the bag body (2) in a transport direction (5 transverse to its longitudinal extension (6), and with opening means (7) for forming the bottom opening (8) between the bag sections (2 ', 2' ') at the open end region (9) of the tubular bag body (2), the opening means (7 ) has a Voröffnungsstation (23), with which the bag sections (2 ', 2' ') at the open end region (9) of the tubular bag body (2) from a flat superimposed state in a spaced-apart state can be transferred, characterized in that the Voröffnungsstation (23) at least one guide element (24, 25) with a direction of transport (5) inclined guide surface (24 ', 25') for one of the bag sections (2 ', 2' ') at the open end region (9) of the tubular bag body (2), wherein the guide surface (24 ', 25') is connected to an aspiration element (26) for sucking the bag section (2 ', 2' ') to the guide surface (24', 25 ') is.
    [2]
    Device according to claim 1, characterized in that a drive element (24 ", 24" ') is provided for driving the guide element (24, 25) with the guide surface (24', 25 ').
    [3]
    A device according to claim 2, characterized in that the guide element (24, 25) comprises a guide belt connected to the drive element (24 '', 24 '' '), in particular an endless belt, on which the guide surface (24', 25 ') for one of the bag sections (2 ', 2' ') at the open end region (9) of the tubular bag body (2) is formed.
    [4]
    4. Device according to one of claims 1 to 3, characterized in that the Voröffnungsstation (23) two guide elements (24, 25) in the transport direction (5) diverging guide surfaces (24 ', 25') for the bag sections (2 ', 2' ') has at the open end region (9) of the tubular bag body (2).
    [5]
    5. Device according to one of claims 1 to 4, characterized in that the suction element (26) at least one other guide surface (24 ', 25') provided for suction opening (26 ') for sucking one of the bag sections (2', 2 '') ,
    [6]
    Device according to claim 5, characterized in that the pre-opening station (23) comprises at least one vacuum generating unit (27) with a vacuum chamber (27 ') adjacent to the guide surface (24', 25 ') of the guiding element (24, 25) with the suction opening (26). having.
    [7]
    7. Device according to one of claims 1 to 6, characterized in that the opening means (7) at least one about a rotation axis (11) rotatable expansion element (10), which in the rotation between the bag sections (2 ', 2' ') open end region (9) of the tubular bag body (2) is insertable, wherein the rotatable expansion element (10) a wedge element (12; 12 ', 12' ', 12' '') with at least one opposite direction of rotation (13) rising wedge surface (14; 14 ' , 14 ''), with which the bag sections (2 ', 2' ') can be spread apart on the open end region (9) of the tubular bag body (2) during transport on the transport device (3) in order to open the bottom opening (8) between the bag sections (8). 2 ', 2' ') at the open end region (9) of the tubular bag body (2) form.
    [8]
    Device according to claim 7, characterized in that the wedge element (12) has two wedge surfaces diverging in the direction of transport (5), preferably an upper wedge surface (14 ') and a lower wedge surface (14' '), the upper wedge surface (14'; ) and the lower wedge surface (14 '') are preferably each arranged at an acute angle to the support surface (4) for the tubular bag body (2) on the transport device (3).
    [9]
    9. Apparatus according to claim 7 or 8, characterized in that the opening device (7) has at least two in the transport direction (5) of the tubular bag body (2) successive spreading elements (10).
    [10]
    10. The device according to claim 9, characterized in that the wedge elements (12; 12 ', 12' ', 12' '') of successive spreading elements (10) in the transport direction (5) of the tubular bag body (2) increasing wedge heights (h) preferably perpendicular to the support surface (4) for the tubular bag body (2) on the transport device (3).
    [11]
    11. The device according to claim 9 or 10, characterized in that the spreading elements (10) during rotation in the transport direction (5) of the tubular bag body (2) overlapping wedge elements (12; 12 ', 12' ', 12' ''), wherein a wedge element (12; 12 ', 12' ') preceding in the transport direction has a recess (18) for the passage of a wedge element (12; 12' ', 12' '') following in the transport direction (5).
    [12]
    12. The device according to claim 11, characterized in that exactly three expansion elements (10) are provided, which at the rotation in the transport direction (5) overlapping wedge elements (12; 12 ', 12' ', 12' '') for insertion between the bag sections ( 2 ', 2' ') at the open end region (9) of the tubular bag body (2).
    [13]
    Device according to one of claims 1 to 12, characterized in that a wedge element (12; 12 ', 12' ', 12' '') has a retaining section (19; 19 ', 19' ') at a rear end region with respect to the direction of rotation (13). ) for holding with respect to the transport direction (5) rear portion (20) of the tubular bag body (2) during insertion of the wedge surface (14) in the transport direction (5) following wedge element (12; 12 '', 12 '' ') in a front region (21) of the tubular bag body (2).
    [14]
    Device according to claim 13, characterized in that the retaining portion (19; 19 ', 19' ') of the wedge element (12; 12', 12 '', 12 '' ') has a guide edge (22) substantially on it Height as seen in the direction of rotation (13) rear end of the wedge surface (14, 14 ', 14' ') is arranged.
    [15]
    15. Apparatus according to claim 13 or 14, characterized in that the wedge element (12; 12 ', 12' ', 12' '') between the wedge surface (14; 14 ', 14' ') and the holding portion (19; 19' , 19 '') has the recess (18) for the passage of the following in the transport direction (5) wedge element (12; 12 '', 12 '' ').
    [16]
    16. Device according to one of claims 7 to 15, characterized in that the wedge element (12; 12 ', 12' ', 12' '') in the rotational direction (13) arcuate, in particular circular arc-shaped, is curved.
    [17]
    A device according to any one of claims 7 to 16, characterized in that the wedge element (12; 12 ', 12' ', 12' '') is connected to a shaft element (15) coupled to a drive, the axis of rotation (11) of which is substantially substantially perpendicular to the support surface (4) for the bag body (2) on the transport device (3) is arranged.
    [18]
    18. Device according to one of claims 7 to 17, characterized in that the wedge element (12; 12 ', 12' ', 12' '') at least one preferably substantially perpendicular to the support surface (4) for the bag body (2) on the transport device ( 3) arranged plate part (16, 16 ', 16' '), which at one end face a wedge surface (14, 14', 14 '') is formed.
    [19]
    Device according to Claim 18, characterized in that the wedge element (12; 12 ', 12' ', 12' '') has at least one part of the disc (3) arranged preferably parallel to the support surface (4) for the bag body (2). 17) which is connected at the outer edge region with the wedge surface (14, 14 ', 14' ') having plate member (16).
    [20]
    Method for forming a bottom opening (8) between bag sections (2 ', 2 ") at the open end region (9) of a tubular bag body (2), the bag body (2) transporting in a transport direction (5) transversely to its longitudinal extent (2a) and during transport a bottom opening (8) is formed between the bag sections (2 ', 2' ') at the open end region (9) of the tubular bag body (2), the bag sections (2', 2 ") being formed at the open end section (Fig. 9) of the tubular bag body (2) are transferred from a flat superimposed state into a spaced-apart state in a pre-opening station (23), characterized in that at least one of the bag sections (2 ', 2' ') in the pre-opening station (23) along a to the transport direction (5) inclined guide surface (24 ', 25') is transported, wherein the bag portion (2 ', 2' ') is sucked to the guide surface (24', 25 ').
    类似技术:
    公开号 | 公开日 | 专利标题
    DE60118948T2|2007-03-15|TRANSFER OF OBJECTS BETWEEN PROMOTED TRANSFERS
    DE2426217A1|1974-12-12|SYSTEM FOR TRANSPORTING INDIVIDUAL SHEETS
    DE102007023964A1|2008-11-27|Transfer device for transferring a folding box
    DE102005033785A1|2006-03-02|Saugbandanordnung for driving tubular bag material
    DE602004008800T2|2008-01-10|DEVICE AND METHOD FOR ROTATING CONTAINERS
    DE102005017962A1|2006-10-26|Transfer device in a packaging machine
    EP3148790B1|2019-10-23|Apparatus and method of forming an open base at a bag body
    DE2718912A1|1977-11-24|CONVEYOR UNIT
    AT515831B1|2016-07-15|Apparatus and method for forming a bottom opening
    DE20318956U1|2004-02-19|Device for attaching valve bags to the filling tubes of a filling machine
    DE3339432C2|1994-09-01|Machine for the simultaneous production of continuous cigarette strands
    EP1345827A1|2003-09-24|Device for turning flat objects, in particular, folding box blanks
    DE874272C|1953-04-23|Device for separating workpieces from sloping stacks
    DE19906882C2|2001-01-25|Method and device for rotating an object, in particular for rotating a cuboid folding box
    DE2340339B1|1975-01-30|Device for pressing even shrink film packaging
    EP3449079B1|2021-01-20|Method and device for sealing insulated glass blanks
    DE1436845A1|1969-04-03|Multi-layer gusseted sack and method and device for its manufacture
    DE2838569C2|1984-10-31|Device for forming loops in tube sections intended for the production of sacks to compensate for different section lengths
    DE2808598A1|1978-08-31|DEVICE FOR THE AUTOMATIC FEEDING OF OBJECTS OR CONTAINERS OF ANY SHAPE AND DIMENSIONS TO A PRINTING MACHINE
    DE3439473A1|1986-04-30|Apparatus for mounting valve bags to be filled onto the filling nozzle| of a packaging machine
    EP1284202B1|2003-05-21|Device for separating envelopes
    DE19905040C1|2001-02-08|Device for pulling up the ends of continuously transversely conveyed flat tube pieces during the production of sacks or bags
    DE102004021282A1|2005-12-01|System for manufacturing and subsequent palletizing of hose sections, bags or sacks
    AT91183B|1923-02-10|Device for packing boxes filled with cigarettes or the like.
    DE202006010368U1|2007-11-15|Device for turning objects
    同族专利:
    公开号 | 公开日
    BR112016026895A2|2021-07-06|
    CN106457733A|2017-02-22|
    AT515832B1|2016-05-15|
    WO2015176096A1|2015-11-26|
    CN106457733B|2019-01-29|
    EP3148790B1|2019-10-23|
    EP3148790A1|2017-04-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE640287C|1933-09-21|1936-12-29|Verpackungsbedarf G M B H|Device for raising cross floors|
    DE1611701B1|1967-09-01|1971-10-07|Windmoeller & Hoelscher|Method and device for opening the ends of transversely conveyed flat-lying hose pieces in the manufacture of the cross bottoms of sacks and bags in soil-making machines|
    DE912045C|1952-02-17|1954-05-24|Fischer & Krecke Kg|Bottom laying device for cross bottom bag machines|
    SE342180B|1971-08-19|1972-01-31|Akerlund & Rausing Ab|
    IT1068052B|1976-12-13|1985-03-21|Azionaria Costruzioni Acma Spa|MACHINE FOR THE FORMATION AND FILLING OF ENVELOPES|
    US5279095A|1990-08-22|1994-01-18|Sig Schweizerische Industrie-Gesellschaft|Apparatus for spreading open flat bags|
    AT406755B|1998-10-05|2000-08-25|Starlinger & Co Gmbh|DEVICE FOR OPENING TUBULAR BAG BODIES|
    JP2010105266A|2008-10-30|2010-05-13|Shimanto Drama:Kk|Manufacturing process of tote bag|
    EP2441574B1|2010-10-14|2013-05-15|Starlinger & Co Gesellschaft m.b.H.|Method and device for constructing open bases at end sections of tubular bag bodies|ES2726708T3|2016-07-14|2019-10-08|Starlinger & Co Gmbh|Device for opening an end zone of a tubular shaped bag body|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50358/2014A|AT515832B1|2014-05-20|2014-05-20|Apparatus and method for forming a bottom opening between bag sections|ATA50358/2014A| AT515832B1|2014-05-20|2014-05-20|Apparatus and method for forming a bottom opening between bag sections|
    EP15731829.6A| EP3148790B1|2014-05-20|2015-05-20|Apparatus and method of forming an open base at a bag body|
    CN201580032860.6A| CN106457733B|2014-05-20|2015-05-20|For constituting the device and method of bottom opening in bag body|
    PCT/AT2015/050129| WO2015176096A1|2014-05-20|2015-05-20|Device and method for forming a bottom opening on a bag body|
    BR112016026895-4A| BR112016026895B1|2014-05-20|2015-05-20|DEVICE AND METHOD FOR FORMING A BACK OPENING BETWEEN BAG SECTIONS IN THE OPEN END REGION OF A TUBULAR BAG BODY|
    [返回顶部]