EP1002729A1 - Proçédé et dispositif pour couper des liens de piles d'étiquettes ou de flans - Google Patents

Proçédé et dispositif pour couper des liens de piles d'étiquettes ou de flans Download PDF

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Publication number
EP1002729A1
EP1002729A1 EP99120338A EP99120338A EP1002729A1 EP 1002729 A1 EP1002729 A1 EP 1002729A1 EP 99120338 A EP99120338 A EP 99120338A EP 99120338 A EP99120338 A EP 99120338A EP 1002729 A1 EP1002729 A1 EP 1002729A1
Authority
EP
European Patent Office
Prior art keywords
stack
cutting
band
fact
bundle
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.)
Withdrawn
Application number
EP99120338A
Other languages
German (de)
English (en)
Inventor
Valter Spada
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.)
SASIB SpA
Original Assignee
Sasib Tobacco SpA
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 Sasib Tobacco SpA filed Critical Sasib Tobacco SpA
Publication of EP1002729A1 publication Critical patent/EP1002729A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0025—Removing or cutting binding material, e.g. straps or bands

Definitions

  • the invention relates to a method of cutting bands tying the bundles or stacks of labels in which the band is cut according to a transversal cutting line in which before the cut of the band is carried out the same is moved away from the stack in the area where the cut takes place.
  • the bound stacks are generally supported by conveyor means that pick-up the same from a supply line and take them to the cutting station.
  • the means for deflecting part of the blanks of the stack rearward are associated with the cutting station that is substantially stationary, the means for realigning the stack must be provided for on the conveyor itself, and must be such that they can be activated or de-activated to allow for the space for deflecting part of the blanks of the stack.
  • the cutting station must have means for the deflection of part of the blanks of the stack, as well as means to check the deflection during the realignment cycle of the stack after the cutting of the stack has taken place and these means must operate alternating each other, substantially in the same section and in a synchronized manner with the means of re-alignment on the conveyor.
  • the invention aims at realizing a method of cutting the tie bands of the type described at the beginning that allows for a positive fast cut, and without the danger of ruining the labels or the blanks of the stack tied by the same band, the whole allowing for the realization of the method with relative simple means, of little space and low cost.
  • the invention attains the above mentioned purposes, in that the moving away of the band in the cutting station of the same is obtained by means of a lifting of the band from the stack in direction of the cutting knife.
  • Such a method can provide for different alternatives.
  • a first alternative provides that the lifting takes place thanks to a traction of the band in direction of moving away from the corresponding side of the stack.
  • the traction can be applied on one part of the band provided an a side of the preestablished position of the cutting line, or on parts of the band located on both the sides of the preset position of the cutting line.
  • Such a traction can be exerted by suction.
  • a second alternative provides that the lifting from the corresponding side of the stack takes place thanks to the exertion of a warping pressure on the side of the part of the band to be subjected to the cut that is turned towards the stack and the said warping takes place in direction of the cutting knife.
  • a first variant can consist in the execution of the deflection of part of the blanks in the stack foreseen at a level slightly above or below the cutting line, in direction of the cutting knife, whereas the cut is carried out along a cutting line at a level directly above or below of the deflected part of the stack, in correspondence to which the band is lifted from the stack.
  • a perfecting of the above modality consists in the fact of deflecting part of the blanks of the stack on the two sides of the preestablished position of the cutting line, forming a throat between the lines of deflection in which the corresponding part of the band is tensioned on one throat.
  • the steps of locking or freeing the stack can be carried out, by means of clamping and releasing to maintain a preestablished position and a preestablished alignment of the same, and to allow for the deflection and realignment of the stack itself.
  • the method provides for the steps of realignment of the stack or pack after the execution of the cutting of the band.
  • the realignment is not carried out only in the sense of re-establishing and compensate the initial deflection of part of the labels or blanks for carrying out the cutting of the band, but also according to directions transversal to this one, for example in a direction parallel to the cutting line.
  • Such realignment is indispensable for inserting the stack into the hopper of containment and feeding of the blanks to the manufacturing machine.
  • the invention relates to a device for the realization of the said method that comprises:
  • the clamping means are formed advantageously by suction nozzles acting on the band, along the cutting line and at least in one section deflected laterally and at a certain distance from the said cutting line.
  • the suction nozzles are provided for in two separate sections each one arranged on one of the two sides of the cutting line at a certain distance from the same.
  • the invention relates to device for the realization of said method that comprises:
  • the pusher means of realignment of the bundle or stack are provided in combination with surfaces for checking the realignment on the opposite side, or on the side of the bundle or stack on which act the means of deflections.
  • the means of deflection and the means of realignment and/or checking the deflection and the pusher means of realignment are such whereby they act alternating between each other.
  • the device has advantageously also means of realignment in one or more directions substantially parallel or in any case with a considerable component parallel to the cutting according to the geometric shape of the plan of the label or the blank.
  • the invention provides for means of alignment also in direction of the cutting line itself.
  • the device besides has in combination with the means explained above also means for clamping of the bundle or stack of labels or blanks in the perfectly realigned condition and that are activated after the realignment cycle and remain activated during the cycle of discharging or of exit from the cutting station.
  • the means of deflection of the labels or the blanks in order to lift the band from the stack in the area of the cutting line, the means of checking the realignment of the labels or blanks relative to the part of the same subjected to deflection and the means of clamping of the stack in the condition of deflection during the cutting and realignment of the stack as well as the drive actuators of said means are integrated in the means feeding the bundle or stack to the cutting station.
  • a preferred example of execution provides that the said feeding means be put together in their most complex form, but not necessarily limiting as it is possible to also provide for sub-combinations, by a conveyor bracket supported movable along a guide on a path at least two dimensional, preferably three dimensional and the said bracket has a ledge of support of the bundle or of the stack, preferably designed to support the said bundle or stack in the mid section, a set of clamping pushers opposite to the ledge of support and that can be activated to move in two directions of approach and moving away from said ledge, a support plate of the side of the stack or of the bundle opposite to the one along which the band is cut and at least one oscillating pusher, preferably a pair of oscillating pushers, respectively on the two sides of the support plate of the stack or bundle on the side opposite to the cutting section of the band, the said pushers have a flat surface with at least one deflecting projection or with two deflecting projections in a preestablished position and such, whereby the pusher extends itself in active position
  • the cutting unit that carries the cutting knife, the means of clamping and/or the means of realignment are fitted movable transversally to the cutting line in the two directions and in a measure substantially corresponding to the desired lifting of the band from the stack or bundle of blanks.
  • Figs. 1 and 2 illustrate in perspective a cutting station of the tie band F of the stacks or bundles s of blanks, in particular of blanks for making rigid packets for cigarettes, or similar.
  • Figs. 3 and 4 illustrate respectively one of three different lifting methods of the band from the stack of blanks.
  • the Fig. 6 illustrates a view in transversal crosssection of the means for carrying out the lifting of the band and of cutting the same according to the modality of the Fig. 3, that is by means of gripping the band by suction.
  • the Fig. 7 illustrates the situation of the Fig,. 6 with a plan view partially in cross-section.
  • Figs. 8 and 9 illustrate the means for lifting of the band from the side of the pack in correspondence to the cutting line, by means of a deflection pressure wise of a part of the blanks in direction of the knife and only on one side of the cutting line.
  • Figs. 10 and 11 are two views analogous to the Figs. 8 and 9 and illustrate the means of lifting of the band by means of a deflection in direction of pressure of the band towards the cutting knife, by means of deflecting part of the blanks of the stack on the two sides of the cutting line.
  • Figs. 12 and 13 illustrate two cross-sections of the cutting unit according to a plane parallel to the cutting line and in different cycles of the procedure of cutting the band.
  • the Fig. 14 illustrates a view analogous to the Figs. 12 and 13 after the cutting of the band has taken place and in the activated condition of the means of realignment of the stack.
  • the Fig. 15 illustrates a view analogous to the Fig. 6 with the cutting unit after execution of the cut and with the means of realignment of the stack in activated condition.
  • each of these stacks is tied by a band F.
  • the stacks of blanks P are picked up one at the time from the exit end of the conveyor by pick-up/feeder means 2 that are movable along guides 3, 7, for example a bridge type structure according to two directions in a vertical plane and that take each stack P one at a time to the cutting station S placed laterally offset relative to the conveyor 1.
  • the pick-up feeder 2 carries the stack P to a feeding station on the manufacturing machine, in this case a packing machine depositing it in a hopper (not illustrated in detail), but that for example can be arranged immediately at the side of the cutting station.
  • a cutting unit is provided for overall indicated with 4 and that is housed in a box 104 movable forward and backward in position of moving away from and approaching the stack P waiting on the pick-up/feeder means 2 that form also the means of support of the stack during the cutting process itself.
  • the box 104 of the cutting unit 4 is fitted on horizontal guides 5 and is moved along the same by an actuator 6 that can be of any type, for example pneumatic or hydrodynamic or oleodynamic.
  • the pick-up/feeder 2 means are formed by a bracket suspended projecting on a carriage movable in particular in a direction parallel to the cutting line and horizontal, the guide 3 of that carriage is in turn fitted sliding vertically on vertical guides 7, in particular at its opposite ends.
  • the bracket of the pick-up/feeder means of the stacks P comprises a horizontal lower support plane 102 to which is connected a vertical plate 202.
  • the vertical plate 202 is designed to form a stop surface of the stack P opposite to the side of the stack P along which is provided the cutting line of the band F, becoming, for simplicity, in the text and in the claims the side of the stack P opposite to the cutting defined as rear and the one in correspondence of which is provided the cutting line defined as front.
  • the lower plane of support 102 and the rear stop plate 202 form a L shaped bracket and are rigidly connected to each other.
  • the free extremity of the rear stop plate 202 is hinged in an oscillating manner around an axis 8 parallel to the cutting line at the lower extremity of the structure of the pick-up/feeder 2.
  • the pick-up/feeder means 2 In a position overlapping the support plane 102, the pick-up/feeder means 2 have a ledge 20 of support of one or more, pushers 21 that act perpendicular to the top side of the stack P, for locking the same in position.
  • the pushers 21 drivable by linear , pneumatic, hydraulic actuators or of other type can be lifted from a position distanced from the rear side of the stack P and can be lowered against the stack P on which they can exert a preset clamping pressure of the stack between them and the support plane 102.
  • the cutting unit 4 comprises a box 104 inside which is provided a first carriage unit, slide guide and drive actuator 10 that carries the knife 11.
  • the carriage-slide guide-actuator unit 10 is of the integrated type and easily available on he market.
  • the carriage 110 of the same has the rotary drive motor 11 of a rotary knife 211 and a fork 311 equipped with a central slot for passage of the knife blade 211 and that has a certain inclination in the horizontal plane with regards to the cutting and is designed to overlap on the rear of the band F during the cutting itself forming a surface of support in the section of the band along which the cut is applied.
  • the fork extends itself according to a plane secant relative to the knife 211 the peripheral section of which passes through the central slot of the same.
  • the fork is made cuneiform, forming a surface of slight tensioning and progressive transfer with the advancement of the knife 211 in a section at an angle between cutting and wall of the fork 311 itself.
  • the knife 11 is moveable from a position of rest in which it is completely covered towards the outside in an active position, in which it projects outward towards the stack P that is facing towards a slot 204 of the box 104 that extends itself in a front stop plate 304 of the said box 4 for the entire length of the active stroke of the knife.
  • a nozzle for removal 30 preferably a plurality of suction nozzles 30, in particular a row of suction nozzles that extend themselves in the section of contact of the band F with the stop surface 304.
  • the pick-up/feeder 2 after having picked up the stack P from the bands 1 transfers it to the cutting station, taking it in a position resting against the stop surface 204 of the box 104 and in a position such, whereby the band comes to coincide with the suction nozzles 30.
  • These are connected to a suction source thanks to conduits 31 and are activated at the moment of contact with the band F.
  • the box 4 is moved backwards in a preestablished measure along the guide 5, whereas the band F remains firmly retained by the suction nozzles 30, whereby thanks to the dimensional tolerances and its intrinsic elasticity, the same lifts itself off the side of the stack P facing towards the knife 11.
  • the same is retained against the pull off by the feeder/pick-up 2 by means of clamping between the side of support 102 and the pusher means 21.
  • the suction nozzles can be deactivated, whereas the box 4 can be returned in the stop position with the stack P to carry out the eventual cycles of realignment of the stack, when the same also carries such means of realignment.
  • the lifting of the band F is obtained by deflection of part of the blanks from the rear side of the stack P, that is the one opposite to the cutting knife 11 in direction of the side facing towards the cutting knife 11, that is the front side of the stack P.
  • This deflection results in the formation of a projection P' on the front side of the stack that determines the lifting of the band F on both sides of the projection P'.
  • the part of the blanks that is deflected is the one designed to form a projection P' on only one side of the cutting line, in particular below the cutting line.
  • the deflection and the distance of the same from the cutting knife 11 are chosen in such a manner whereby the cutting line finds itself in an optimal section of the lifting of the band F.
  • the two deflecting pushers 602 in form of an upside-down L, with a branch parallel to the rear stop plate 202 and a transversal branch and are fulcrated in the corner section in such a manner as to assume thanks to the linear actuators 802 a position of alignment with the face of the rear stop plate 202 against which the stack P comes into contact and a position moved angularly backwards in a dimension equal to the maximum depth of a projection of the deflection 502. This is provided for at such a level, whereby, in the active position of deflection (Fig.
  • the projection of the deflection is at a level laterally offset relative to the cutting line forming the above mentioned projection P' to lift the band F on the face of the stack turned towards the knife 11.
  • Figs. 10 and 11 illustrate the variant relative to the means necessary for carrying out the deflection in two different sections on the two sides of the cutting line as illustrated in Fig. 5.
  • the deflecting pushers 602 are made in a manner substantially identical to those according to the Figs. 8 and 9, with the difference that they have two projections of deflection 502, 502' arranged in such a position to obtain the projections P' and P'' one above and the other below the cutting line.
  • the width or the horizontal extension of the rear stop plate 202 is at least equal, if not greater than the one of the band F and the deflecting pushers 602 extend themselves substantially laterally adjacent relative to the corresponding lateral edge of the band F.
  • Figs. 12 to 14 illustrate different cutting cycles, whereas at termination of the cut, after the knife returned to its starting position, the process of realignment of the pack P takes place.
  • Additional pushers 12 of realignment of the deflected part or parts P' and P'' of the blanks of the stack P are provided for this purpose in the box 104 of the cutting unit 4 .
  • two or more pushers of realignment 12 are provided for that are distanced from each other parallel to the direction of cutting.
  • the distance of the pushers of realignment 12 is such whereby in the presence of the stack P of blanks of different size, at least one of the pusher of realignment 12 will cooperate with the stack P.
  • the pushers of realignment 12 are fitted moveable in an active and inactive position. In the active position these extend themselves respectively beyond the level with the front stop plate 204 of the box 104, whereas in the inactive position they are withdrawn into the box in a position of non interference with the knife 11.
  • the pushers of realignment carry out different types of motions.
  • the pusher of realignment are fitted on the same of the linear actuators 14 and are permanently fitted in a position coinciding with the slot 304.
  • the stroke of the actuators is such, whereby in the inactive position completely withdrawn within the box 104, the pushers of realignment 12 will be outside of the path of movement of the knife 11 and do not interfere with the same.
  • the actuators 14 are fitted on a bracket mounted on vertical guides and projecting cantilevered in the section of passage of the knife 11, the said bracket is alternately lifted and lowered in a position in which the pushers of realignment 12 are coinciding with the slot 204 and in a position in which said parts 12 are lifted relative to the slot 202 in the distanced position of non interference with the stroke of the knife 11.
  • the lifting and lowering of the bracket takes place thanks to linear actuators that can be the same as those used for the parts 12 or for the movement of the knife 11.
  • the box 14 can carry additional parts of realignment of the stack P according to the direction parallel to the cutting line, for example means of realignment carried cantilevered from above in front of the front stop plate 304 of the box 4.
  • These parts of realignment can be formed by vertical elements that extend themselves over the entire height of the stack P and the top end of which is fixed to the projecting extremity of a support arm 116 that connects to or is formed by a lateral extension of an respective sliding carriage 216 moveable on two guides 17 parallel to each other and relative to the cutting line.
  • the two linear actuators 18 that drive the movement of the two vertical elements (not illustrated), in such a manner that the same are moved away or closer to one an other symmetrically with regards to the median transversal axes of the stack P.
  • the two vertical elements have stop plates with the end sides of the stack P perpendicular to the cutting line and parallel to each other that are oriented corresponding to the area of contact with the said sides of the stack P.
  • the stroke of the parts of realignment 16 in the cutting direction is such, that they can be distanced in a measure greater than the maximum dimension of the blanks in the direction of the cutting line and can be can be taken to stop against the corresponding sides ends of the stack P with a minimal dimension in direction of the cutting line T.
  • the activation of the knife causes the cutting and at the return of the same, the pushers of realignment 12 are made to advance only or at least first or together or subsequently the entire box 4 until coming to a stop against the facing side of the stack P.
  • the clamping means of the stack P, 21 will obviously be activated alternatively according to the execution of the deflection, of the cut or of the realignment.
  • An executive variant not illustrated advantageously provides that the stop plate 304 of the box 4 against that stack P has stop section projecting outwards in a measure substantially corresponding to the dimensions of the deflections P, P' in order to guarantee that the stack is not moved when the clamping force must be reduced in order to carry out the deflection.
  • the surface 304 in the area of the projection of the deflection P', and P'', has a kind of a recessed niche that has dimensions such to accept at least the area of deflection P' and P''.
  • the stop surface 304 may have a shape corresponding to the one of the facing side of the stack P in condition of deflection of the blanks, in order to guarantee a complete rest of the stack against the plate 304.
  • the simple process of cutting the band has been advantageously integrated with functions of realignment and adjustment of the stack that make the subsequent steps of feeding the stack to the manufacturing machine more secure and less subject to jams.
  • the cut is carried out without danger of damaging the blanks and therefore reducing the quantity of rejects, whereas the realignment avoids having blanks in a wrong position that can lead to jams or stops in the feeding cycle in which generally the blanks are separated one after the other from the stack itself.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP99120338A 1998-11-19 1999-10-12 Proçédé et dispositif pour couper des liens de piles d'étiquettes ou de flans Withdrawn EP1002729A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998SV000066A IT1305424B1 (it) 1998-11-19 1998-11-19 Metodo e dispositivo di taglio di fascette di legatura di mazzi opacchi di foglietti e/o fustellati, nonche' gruppo di taglio di
ITSV980066 1998-11-19

Publications (1)

Publication Number Publication Date
EP1002729A1 true EP1002729A1 (fr) 2000-05-24

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EP99120338A Withdrawn EP1002729A1 (fr) 1998-11-19 1999-10-12 Proçédé et dispositif pour couper des liens de piles d'étiquettes ou de flans

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EP (1) EP1002729A1 (fr)
IT (1) IT1305424B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006014827A1 (de) * 2006-03-30 2007-10-04 Giesecke & Devrient Gmbh Zuführen von losem Blattgut
WO2012161771A3 (fr) * 2011-02-22 2013-02-14 Graphic Packaging International Inc Système de dépilage de cartons
WO2013184295A1 (fr) * 2012-06-07 2013-12-12 Graphic Packaging International, Inc. Système de déballage de cartons
US9856047B2 (en) 2011-02-22 2018-01-02 Graphic Packaging International, Inc. Carton decasing system
CN110671609A (zh) * 2019-10-25 2020-01-10 大连康仑医疗设备有限公司 集中供液系统自动加粉装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1097859A (en) * 1965-04-23 1968-01-03 Wiking Lars Improved apparatus for opening a package having a wrapping of heat sensitive foil material
GB2076355A (en) * 1981-05-07 1981-12-02 Tokyo Shibaura Electric Co Apparatus for taking off a band wound about a paper sheet bundle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1097859A (en) * 1965-04-23 1968-01-03 Wiking Lars Improved apparatus for opening a package having a wrapping of heat sensitive foil material
GB2076355A (en) * 1981-05-07 1981-12-02 Tokyo Shibaura Electric Co Apparatus for taking off a band wound about a paper sheet bundle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006014827A1 (de) * 2006-03-30 2007-10-04 Giesecke & Devrient Gmbh Zuführen von losem Blattgut
WO2012161771A3 (fr) * 2011-02-22 2013-02-14 Graphic Packaging International Inc Système de dépilage de cartons
US9346580B2 (en) 2011-02-22 2016-05-24 Graphic Packaging International, Inc. Carton decasing system
US9856047B2 (en) 2011-02-22 2018-01-02 Graphic Packaging International, Inc. Carton decasing system
WO2013184295A1 (fr) * 2012-06-07 2013-12-12 Graphic Packaging International, Inc. Système de déballage de cartons
CN110671609A (zh) * 2019-10-25 2020-01-10 大连康仑医疗设备有限公司 集中供液系统自动加粉装置

Also Published As

Publication number Publication date
ITSV980066A1 (it) 2000-05-19
IT1305424B1 (it) 2001-05-04
ITSV980066A0 (it) 1998-11-19

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