EP1534615B1 - Appareil de transfert de couvercles - Google Patents

Appareil de transfert de couvercles Download PDF

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Publication number
EP1534615B1
EP1534615B1 EP02733214A EP02733214A EP1534615B1 EP 1534615 B1 EP1534615 B1 EP 1534615B1 EP 02733214 A EP02733214 A EP 02733214A EP 02733214 A EP02733214 A EP 02733214A EP 1534615 B1 EP1534615 B1 EP 1534615B1
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EP
European Patent Office
Prior art keywords
transfer apparatus
objects
seat
lids
cutting
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.)
Expired - Lifetime
Application number
EP02733214A
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German (de)
English (en)
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EP1534615A1 (fr
Inventor
Giacomo Borra
Gianni Benini
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Techno Italy SRL
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Techno Italy SRL
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Publication date
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Publication of EP1534615A1 publication Critical patent/EP1534615A1/fr
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    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2807—Feeding closures
    • 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
    • B65B69/0033—Unpacking of articles or materials, not otherwise provided for by cutting

Definitions

  • the subject of the present invention is an apparatus for transferring objects according to the preamble of claim 1, in particular lids, and an apparatus for removing a wrapping film from packages of objects or products according to the preamble of claim 24 and an apparatus for applying a packaging film to a group of objects according to claim 29.
  • the present invention is applicable particularly in the field of the production of lids to be fastened on containers, for example food containers, but may also be applied in different fields for removing a wrapping film from one or more products, possibly of different kinds.
  • the lids may be of various shapes and sizes since, for example, round, elliptical or rectangular lids are available.
  • An apparatus for transferring lids is disclosed in US-A-4312172.
  • the packages are generally produced by a suitable apparatus in which the objects are arranged close together and covered with a film of heat-shrinkable material so as to form a pack.
  • lids In the case of lids, they are arranged close together along an axis perpendicular to the major surfaces of the lids and are covered with a film of heat-shrinkable material so as to form a pack, also known as a roll, the length and size of which are variable in dependence on the number, shape and size of the lids.
  • the film covers the lateral surface of the package, that is, the lateral surface of the cylinder for round lids, or the sides of the parallelepiped for rectangular lids. Moreover, in the region of the first and last lids, that is, in the region of the head portions or ends of the pack, the film is folded towards the centre, generally leaving a small opening which, in any case, has dimensions smaller than the transverse dimensions of the lid. This portion of the film which is folded over at the ends of the package is generally thicker and stronger than the remaining portion which covers the lateral surface.
  • the packs or rolls of lids have to be freed from the wrapping film in order to make the loose lids available to an apparatus immediately downstream, for example, an apparatus for fastening the lids on the respective containers.
  • An apparatus for removing wrapping film from packages generally comprises means for cutting the wrapping film, the cutting means being mounted in a cutting region disposed between a region for the input of the packages and a region for the output of the objects free of the wrapping film.
  • a particular need in the field is to make available an apparatus for removing the wrapping film from packages, for example of lids, which can perform this operation in the simplest, quickest and most economical manner, at the same time producing a finished product of high quality.
  • the packages collected in the storage container are lifted along an inclined plane and pushed by bars arranged transverse the path followed.
  • the packages are arranged with their longitudinal axes parallel to the longitudinal axes of the bars so that the packages and the bars are substantially in contact along respective generatrices of their lateral surfaces.
  • the packages bear on the inclined plane, along which they slide, pushed by the bars.
  • a chain which is associated with each of the two sides of the inclined plane on which the packages are lifted and is driven by a suitable drive unit, has at least one portion parallel to the plane. An end of each bar is fixed to the chain.
  • the package thus taken from the storage container is brought to the top of the inclined plane and is then subjected to cutting of the wrapping film.
  • the loose lids are then transferred into a discharge cradle and from there are sent to the downstream apparatus by means of a thrust element.
  • the problem underlying the present invention is to propose a transfer apparatus and an apparatus for removing a wrapping film from packages of objects, in particular of lids, as well as an apparatus for applying a packaging film to a group of objects, in particular of lids, which have structural and functional characteristics such as to satisfy the above-mentioned needs and, at the same time, to overcome the disadvantages mentioned with reference to the prior art.
  • an apparatus for removing a wrapping film 2 from packages 3 of objects, for example, of lids 4, is generally indicated 1.
  • the embodiment shown relates to a plurality of round lids arranged close together along the axis of symmetry of each lid.
  • the package is shown by way of example in Figure 13 and, in the case of round lids, thus adopts the shape of a cylindrical pack which extends along a major axis AA perpendicular to the larger surfaces of the lids.
  • a package or roll has a length of between 500 and 800 mm.
  • the wrapping film 2 envelops the lateral surface and part of the two ends or head portions of the package 3, holding the lids 4 close together.
  • the portion of film which envelops the lateral surface of the package 3 is indicated 2a and the portions which are folded over the ends of the package are indicated 2b.
  • the apparatus 1 extends inside a basic structure 5 which represents a framework for supporting and protecting the moving mechanisms.
  • a loading apparatus 6, comprising a storage container 6a and supply means 6b which take a package from the container and direct it towards an input region of the apparatus 1, may advantageously be associated with this independent basic structure 5.
  • the loading apparatus 6 may be connected firmly to the apparatus 1 and share its basic structure and drive unit or, preferably, may be independent as shown, for example, in Figures 1, 2 and 6.
  • the loading apparatus 6 is independent of the apparatus 1 with regard both to its drive and to its structure.
  • the apparatus 6 has an outer framework 7 which is preferably trolley-mounted so that it can easily be moved up to and away from the apparatus 1.
  • the trolley-mounted portion is advantageously of adjustable height ( Figure 6) so that the loading apparatus 6 can be associated correctly with an apparatus 1, as described below.
  • the container 6a is constituted by a support surface 8 which is substantially horizontal or is slightly inclined in order to direct the packages towards a withdrawal point where they are withdrawn individually.
  • the support surface 8 has one side articulated to a portion of the framework 7 and the opposite side connected to an external portion of the framework 7 provided with adjustable support feet (Figure 6).
  • the support surface 8 may advantageously be surrounded on two sides by delimiting walls 8a, whereas one side is preferably left free for the loading of the packages which may be introduced manually or by means of a mechanical arm.
  • the fourth side represents the package-withdrawal region.
  • the support surface 8 is supported by the framework 7 which advantageously positions it at a height convenient for the operator performing the loading.
  • the packages 3 are withdrawn from the storage container 6a individually and are sent towards an input region of the apparatus 1, generally indicated 9 in the drawings.
  • This input region may constitute a region for connection to the loading apparatus 6, as shown, for example in Figure 2.
  • the input region 9 may constitute a region for direct access to the apparatus 1 in which, for example, an operator can position the packages manually if the loading apparatus 6 is not present, or may constitute an input region to which a loading apparatus configured differently from that shown, for example, with the packages moved in a direction parallel to their longitudinal axes, can be connected.
  • the loading apparatus 6 is arranged in a manner such as to withdraw the packages 3 from the container 6a individually and to send them to the input region 9 along a path 10 perpendicular to the longitudinal axes AA of the packages.
  • the packages 3 are arranged with their longitudinal axes parallel to one another and transverse the path followed.
  • At least a first portion 10a of the path 10 extends vertically from the support surface 8 to a height substantially corresponding to that of the input region 9 of the apparatus 1.
  • the path 10 then continues with a second portion 10b which approaches the input region 9 and which is substantially horizontal or slightly inclined to the horizontal support surface of the apparatus.
  • the vertical surface 11 In the region of the surface 8 on which the packages 3 are disposed, the vertical surface 11 has a rib 11a which restricts the opening between the vertical surface 11 and the end of the surface 8.
  • a second surface 12 extends continuously from the first surface 11 as far as the input region 9 of the apparatus 1 and defines the second portion 10b of the path 10, extending horizontally or at a slight inclination to a horizontal plane so that the second portion 10b of the path 10 rises slightly ( Figures 2 and 6).
  • the supply means 6b are associated with a portion of the framework 7 corresponding to a parallelepipedal portion suitable for being fixed to the basic structure 5 of the apparatus 1, if the loading apparatus 6 is independent, as shown, for example, in Figure 2 or Figure 6.
  • the supply means 6b comprise two chains 13 of which one is shown schematically in Figure 6, and which are mounted in respective vertical planes arranged transverse the first and second surfaces 11 and 12.
  • the two chains 13 and the respective vertical planes are spaced apart by a distance such as to house a package arranged along its major axis, that is, along the longitudinal axis AA in the case of the packages of Figure 13.
  • the framework 7 preferably has a cover 7a which isolates a portion of the path 10 in the closed position and which permits cleaning and maintenance of the loading apparatus 6 in the open position.
  • each chain 13 preferably extends vertically during its movement over the respective transmission elements.
  • the chains 13 are preferably arranged at least partially parallel to the first and second surfaces 11 and 12.
  • Some of the transmission elements may be adjustable in order to move the chains towards or away from the first and second surfaces 11 and 12 in dependence on the transverse dimensions of the packages.
  • the adjustment undergone will preferably keep the chain at least partially parallel to the first and second surfaces 11 and 12, that is, to the path 10.
  • the chains 13 move, pulling along a plurality of bars 14.
  • the bars have ends fixed to the two chains 13, respectively, and are arranged perpendicular to the path 10 with their longitudinal axes arranged in planes parallel to the first and second surfaces 11 and 12.
  • Each bar 14 defines an abutment which pushes a package 3 from below.
  • the packages 3 bear against the surface and are positioned against the corresponding bar 14.
  • the packages 3 are in fact arranged with their longitudinal axes parallel to the longitudinal axes of the bars 14 so that the packages and the bars are substantially in contact along respective generatrices of their lateral surfaces. At the same time, the packages bear against the surface, along which they slide, pushed by the bars 14.
  • the framework 7 has an opening 16 such as to allow the packages 3 to pass from the loading apparatus 6 to the input region 9 of the apparatus 1.
  • the input region 9 can comprise a surface 17 for the sliding of the packages 3.
  • the ends of the surface 17 can be fixed firmly to the basic structure 5 which, naturally, has an access opening 17 in the input region 9, facing the opening 16 of the framework 7 of the loading apparatus 6.
  • the sliding surface 17 is advantageously mounted on the basic structure 5 by adjustment means 17a which define its height and/or inclination.
  • the surface 17 for the sliding of the packages 3 is preferably inclined slightly downwards, with reference to a direction of movement P of the packages, in order to direct the packages, avoiding the need for motorized actuation ( Figure 2).
  • the apparatus 1 is arranged in a manner such as to receive the packages 3 through the input region 9 and to position them in a cutting station 19 in which the film 2 which forms the package is cut and expelled from the apparatus.
  • the lids 4 or, in general, the objects, previously packaged are then sent, free of the wrapping film 2, to an output region 20 from which they are sent out of the apparatus 1 towards subsequent processing stations, not shown.
  • the subsequent stations may be, for example, stations for positioning and fastening the lids on respective containers.
  • the apparatus 1 for removing the wrapping film 2 is preferably associated with the loading apparatus 6 as shown in the appended drawings, in order to receive the packages 3 at the input region 9.
  • the cutting station 19 is arranged in an intermediate region between the input region 9 and the output region 20, for example, immediately downstream of the sliding surface 17 in the direction of movement of the packages, for example, indicated by the arrow P in Figure 2. As the package arrives from the surface 17, it is inserted between two rods 19a associated with translation means 19b. A possible configuration of the cutting station 19 is shown by way of example in Figures 3-5.
  • the cutting station 19 preferably comprises two rollers 21 arranged transverse the path 10 followed by the packages in the loading apparatus 6, as described above.
  • the rollers 21 preferably have parallel rotation axes disposed in a horizontal plane which in turn is disposed below and downstream of the sliding surface 17, in the direction of movement P of the packages 3.
  • the two rollers 21 are mounted for rotating relative to the basic structure 5 of the apparatus 1, parallel to one another and substantially side by side, so as to define a region for receiving a package coming from the input region 9.
  • the rollers 21 are arranged in a manner such that the package, indicated 3a in Figure 2, which is positioned in the cutting station 19, is in contact with both of the rollers 21 along generatrices of the package and of the respective rollers.
  • the two rollers 21 are also preferably in contact along respective generatrices thereof.
  • the rollers 21 are operatively connected to a drive unit which can bring about a contrarotation of the rollers 21, preferably such as to grasp and remove the cut film 2.
  • the directions of the rotation imparted to the two rollers 21 are indicated by the arrows 22 in Figures 2 and 5.
  • Two pressure rollers have longitudinal axes parallel to the axes of the rollers 21 and disposed above them.
  • the axes of the pressure rollers 23 are also preferably arranged parallel to one another and in a horizontal plane.
  • the two pressure rollers 23 can be disposed a predetermined distance apart ( Figures 2 and 5).
  • the pressure rollers 23 can have ends mounted rotatably on supports 24 which in turn are engaged on the basic structure 5 so as to be translatable vertically ( Figure 2) or pivotable relative to a fixed point.
  • the pressure rollers 23 are in contact with the package 3a and can be contrarotated by a drive unit 25 in order to stretch out the wrapping film 2 during the cutting and then to open it out along the cutting line.
  • the cutting station 19 also comprises cutting means 26 which operate on the wrapping film 2.
  • the cutting means 26 advantageously comprise two cutting heads 27 mounted on carriages 28 movable relative to the basic structure 5 of the apparatus 1 along an axis parallel to the longitudinal axes AA of the packages 33 as they are arranged in the cutting station 19 (package 3a).
  • the carriages 28 are associated slidably with guides 29 parallel to the longitudinal axis AA of the package 3a positioned in the cutting station 19.
  • the guides 29 are formed, for example, by rods the axes of which are disposed in a vertical plane.
  • the ends of the guides 29 are preferably mounted on the supports 24 in order to move relative to the basic structure 5, together with the pressure rollers 23.
  • the carriages 28 are associated with a drive unit suitable for causing them to translate along an axis parallel to the axis AA of the package 3a, in opposite directions.
  • the two carriages 28 are advantageously operatively connected to the same drive unit 30 which moves them simultaneously in the two opposite directions.
  • the drive unit 30 comprises, for example, a toothed belt 31 which can pass over transmission elements 32 of which at least one is driven.
  • the toothed belt 31 extends at least between a driven toothed wheel and an idle toothed wheel, which are mounted on opposite sides of the median plane along which the section of Figure 2 has been drawn.
  • the transmission elements 32 are mounted on the supports 24 so as to render the pressure roller 23, the guides 29, and the belt 31 movable simultaneously relative to the basic structure 5.
  • the two transmission elements 32 define two portions of the belt 31, that is, a first, upper portion 31a and a second, lower portion 31b, both parallel to the guides 29 and hence to the longitudinal axis AA of the package 3a.
  • each carriage 28 is connected to a belt portion which moves in the opposite direction to the other belt portion to which the other carriage is connected. That is, with reference to the embodiment of Figure 4, one carriage 28 is connected to the first, upper portion 31a and the other carriage 28 is connected to the second, lower portion 31b ( Figure 5).
  • the drive unit 30 gives rise to a translational movement of the carriages 28 from an initial position, preferably corresponding to a central position relative to the package 3a to be opened, to a final position, preferably corresponding to respective end positions relative to the package.
  • each carriage 38 moves parallel to the longitudinal axis AA of the package 3a, but in the opposite direction to the other carriage, from the centre of the package to the respective head portion or end, preferably cutting firstly the central portion 2a and then the end portion 2b of the film.
  • the drive unit 30 preferably also comprises means for adjusting the positions of the carriages 28 in dependence on the length of the package to be opened.
  • These adjustment means are operatively connected to one of the carriages in order to define its initial position, that is, the position depending on the central region of the packaging 3a.
  • the travel limit of the carriage that is, the final position corresponding to the end of the package, is preferably reached by regulation of the drive unit (via encoders and/or sensors).
  • These regulation means can act on one of the carriages directly and on the other indirectly. The indirect effect is achieved, for example, as a consequence of the fact that both carriages 28 are driven in the two opposite directions by the same toothed belt 31.
  • the drive unit 30 of the carriages 28, and hence of the cutting heads 27, may be arranged in a manner such as to move the carriages substantially continuously when they are facing the lateral surface 2a of the film and to interrupt the movement of the carriages momentarily when they are in the region of the ends 2b of the wrapping film.
  • Each cutting head 27 is formed, for example, by a nozzle 32 connected by means of tubes 33 to a source of heated fluid, particularly superheated air (at about 200°), not shown in the drawing.
  • Each carriage 28 and each cutting head 27 are positioned in a manner such that, during the cutting and the translational movement of the carriages parallel to the longitudinal axis AA of the package 3a, each nozzle 32 is disposed between the two pressure rollers 23 ( Figures 2 and 5).
  • a suction duct 34 has a portion which faces the two rollers 21 from below, along the generatrix along which the rollers are placed side by side. This duct is connected to a suction unit 35 and terminates in a container for recovering the wrapping film 2.
  • the cutting of the wrapping film of a package 3 of objects, in particular lids 4, can provide for a package 3a to be positioned in a cutting station and for cutting to start simultaneously at two distinct points of the film with the use of two cutting heads.
  • the opening in the film is then lengthened until it covers an entire dimension of the package, by relative movement of the cutting heads and the package 3a to be opened.
  • the cutting step can start at two central points of the package, the opening then being lengthened as far as the head portions or ends of the package 3a.
  • the step of the cutting of the lateral portion 2a of the film may be arranged to take place substantially continuously, that is, with a continuous movement of the cutting heads, whereas the step of the cutting of the end portion 2b of the film takes place with the movement of the respective cutting head interrupted, that is, by causing the respective cutting head to pause on the portion 2b of the wrapping film.
  • the stretching-out step may be performed by the pressure rollers 23, the grasping step by the rollers 21, and the removal step by suction through the suction duct 34.
  • the apparatus 1 Downstream of the cutting station 19 in the direction of movement P, the apparatus 1 comprises the above-mentioned output region 20, where there is a seat 36 for receiving a group of objects, in the embodiment described, a group of lids 4, free of wrapping film 2 and coming from the cutting station 19.
  • the group of lids is dragged into the seat 36 by the rods 19a and by the means 19b.
  • the receiving seat 36 comprises a wall 37 mounted on the basic structure 5 and defining an output channel which extends along a longitudinal axis BB, preferably parallel to the axes of the rollers 21, that is, perpendicular to the portion of the path followed by the packages 3 inside the apparatus 1.
  • the cross-section of the wall 37 is preferably of a shape complementary to at least a portion of the cross-section of the objects in question.
  • the wall 37 extends around a cylindrical angular sector of a shape complementary to a portion of the circular cross-section of the lids 4 and has longitudinal edges 37a which are bent to form substantially radial flanges.
  • the wall 37 may not have closed ends, and thus forms a double-ended output channel with two possible outputs formed by respective openings in the side walls of the basic structure 5. These outputs are advantageously distinct, arranged opposite one another, and selectable in dependence on the layout of the plant.
  • FIG. 7 A detail of the output region 20 is shown schematically by way of example in Figures 7, 8 and 9.
  • movement means 38 are provided for causing the lids 4 to translate along the seat 36 towards the previously selected output.
  • the seat 36 and the movement means 38 are associated with an apparatus 1 for removing a wrapping film from packages of objects or products, in the case in question, of lids 4.
  • other applications may be envisaged, for example, in an input region of a machine for creating the packages 3 starting with a set of lids 4.
  • the movement means 38 comprise a thrust element 39 for acting on the end of the group of lids 4 remote from the output.
  • the thrust element preferably has a cross-section such as to fit the seat 36, that is, it has a cross-section substantially corresponding to the cross-sections of the lids.
  • the thrust element may have a slot 39a for a stop finger positioned at the end of the seat 36 for stopping the lids when the thrust element 39 returns to the initial position, as described below.
  • the thrust element 39 is operatively associated with a slide 40 which in turn is slidable on a guide 41 mounted on the basic structure 5, preferably parallel to the longitudinal axis BB of the seat 36.
  • the connection between the thrust element 39 and the slide 40 is preferably formed by a rigid rod 42 arranged transverse the longitudinal axis BB of the seat 36.
  • the slide 40 is advantageously connected to a counterweight 43, for example, by means of a cable 44, which may also be formed by a chain or toothed belt.
  • the counterweight 43 is disposed on the output side of the lids 4 and the cable 44 is wound partially around a pulley 45 with a horizontal axis.
  • This arrangement which is shown, for example, in Figure 7 or Figure 8, provides for the cable portion 44 between the pulley 45 and the counterweight 43 to be arranged vertically.
  • the thrust element 39, the slide 40, and the counterweight 43 define thrust movement means which operate by gravity until the portion of cable 44 between the slide 40 and the pulley 45 has run out, whilst the counterweight 43 is lowered from an initial (raised) position to a final (lowered) position.
  • a guide element 46 is provided and, for example, is formed by a guide tube suitable for housing and guiding the counterweight 43 during its movement.
  • the movement means 38 also comprise return means 47 for returning the counterweight from the lowered position, referred to above as the final position, to the raised position, referred to above as the initial position.
  • the return means 47 comprise a toothed belt 48 wound around two transmission elements 49, of which one is operatively connected to a geared motor unit 50. A portion of the toothed belt 48 is fixed to the slide 40.
  • the return means 47 also comprise sensor means, not shown, for detecting the discharge of the lids, for example, by detecting the final (lowered) position of the counterweight 43 or the final position of the thrust element 39, and for bringing about the operation of the geared motor unit 50 and consequently the return of the movement means.
  • the movement means 38 may equally well be mounted in a manner such as to direct the lids along the receiving seat 36 in one direction or in the opposite direction. This selection is made during the assembly of the apparatus 1 in dependence on the user's requirements.
  • Anti-bouncing and anti-overturning means 51 are associated with the seat 36 for receiving the lids 4 and with the movement means 28 to prevent the lids, particularly the first and last lids in the group free of wrapping film, from overturning.
  • Figure 2 corresponds to the application of these means to the output region of an apparatus for removing a wrapping film from packages of objects, in particular of lids.
  • Figure 2 corresponds to the application of these means to the output region of an apparatus for removing a wrapping film from packages of objects, in particular of lids.
  • FIG. 10-12 corresponds to the application of a wrapping film from packages of objects, in particular of lids.
  • FIG. 10-12 corresponds to the application of these means to the output region of an apparatus for removing a wrapping film from packages of objects, in particular of lids.
  • An example of such other applications may be represented by the input region of an apparatus for creating packages, for example of lids, by the application of a wrapping film.
  • the anti-bouncing and anti-overturning means 51 comprise an electromagnet 52 mounted on the basic structure 5 in a stationary manner, preferably beneath the wall 37 defining the seat 36 for receiving the lids free of wrapping film.
  • the electromagnet 52 is advantageously of elongate shape extending along the longitudinal axis BB of the seat 36. According to one possible embodiment, the electromagnet 52 is placed in contact with the wall 37 and extends around a portion thereof, having a wall 52a of substantially the same shape as at least a portion of the wall 37. In the embodiment of Figures 11 and 12, the wall 52a of the electromagnet is a cylindrical portion with a radius equal to the radius of the wall 37.
  • the electromagnet 52 is operatively connected to selective activation means, not shown, which activate the electromagnet only during a predetermined stage of the operation of the apparatus 1, activation of the electromagnet meaning its ability to generate a magnetic force.
  • the electromagnet 52 is active during the stage of the movement of the lids 4 free of wrapping film from the rollers 21 to the seat 36 and preferably remains active until the thrust element 39 compacts the group of lids against the group disposed immediately downstream.
  • the packages 3 are collected in the container 6a manually or by means of a mechanical arm which has access to the container by virtue of its open side.
  • the packages 3 are withdrawn from the container 6a individually by the bars 14 which are translated parallel to themselves by means of the chains 13. Each package 3 is thus sent along the path 10 and is lifted along the first surface 11 and then along the second surface 12 which extends to a position facing the input region 9 of the apparatus 1.
  • Each package 3 is pulled continuously along the path 10 within the loading apparatus 6.
  • the packages 3 slide on the surface 17, which is suitably adjusted, until they reach the cutting station 19.
  • the package 3a which faces the cutting means 26 bears on the rollers 21 so that its position is defined by that of the rollers 21 and of the pressure rollers 23 as soon as the supports 24 are lowered onto the package 3a.
  • the cutting heads 27 slide along the guides 29, driven by the drive unit 30, and cut the wrapping film 2 along a generatrix of the package 3a.
  • the wrapping film 2 preferably starts to open out in a central region of the lateral portion 2a during the movement of the cutting heads 27. Owing to the translation of the two heads in opposite directions, the opening in the film is enlarged towards both ends simultaneously.
  • the translational movement of the respective carriages 28 is interrupted so that each head stops on the portion 2b of the wrapping film, that is, on the portion which is most difficult to cut because it is folded towards the interior of the package and is generally thicker than the rest of the film.
  • the pressure rollers 23 and/or the rollers 21 are rotated, as indicated in the drawings.
  • the pressure rollers 23 stretch out the wrapping film and open it out along the cutting line, whilst the rollers 21 grasp the wrapping film and direct it towards the suction duct 34. The wrapping film is thus removed.
  • the positions of the cutting means 26 and of the pressure rollers 23 may be varied by action on the supports 24, causing them to translate vertically relative to the basic structure 5.
  • the lids 4, free of wrapping film, continue in the direction of movement, indicated P, and are positioned in the receiving seat 36.
  • the anti-bouncing and anti-overturning means 51 are activated and hold the lids 4 in the vertical position.
  • the lids are moved apart slightly, occupying the entire space available between the thrust element 39 and the last lid of the immediately preceding group.
  • the geared motor unit 50 releases the thrust element 39, the slide 40 and the counterweight 43 which, up to this moment, have been kept in the initial position (that is, with the thrust element 39 on the side remote from the output for the lids and with the counterweight 43 in the raised position) by the geared motor unit.
  • the thrust unit 39 acts actively on the last lid, the anti-bouncing and anti-overturning means are deactivated, that is, the electromagnet is no longer excited by the current and the lids 4 are free to slide in the seat 36.
  • the thrust element 39 urges the lids towards the output, compacting them against the immediately preceding lids.
  • the lids 4 are urged towards the output only when there is a requirement downstream, that is, when the apparatus following that described herein is operating correctly. If this is not the case, that is, in the event of stoppage of an apparatus downstream, the apparatus 1 is not stopped but simply enters a standby stage which will be resolved, without release operations, as soon as there is a renewed demand for lids downstream.
  • the slide 40 slides along the guide 41 and the belt 48 runs over the respective transmission elements 49 until the sensor means detect that all of the lids have been discharged.
  • This configuration corresponds to the lowered position of the counterweight 43.
  • the sensor means activate the geared motor unit 50 which returns the slide 40 by means of the belt 48 so that the counterweight 43 returns to the raised position and the thrust element 39 returns to the initial position.
  • the apparatus according to the present invention satisfies the need to provide an apparatus for removing the wrapping film from packages of objects, for example of lids, which can perform this operation more simply, quickly and economically, at the same time producing a finished product of high quality.
  • the advantageous configuration of the cutting means enables a continuous cut to be produced along the packaging film, even in the vicinity of the ends of the roll, also helping to speed up processing times.
  • the presence of two cutting heads driven in opposite directions by the same drive unit also enables the structure to be simplified considerably and a prolonged stationary stage to be performed at the ends 2b of the wrapping film. This also enables the initial and final positions of one of the two heads to be adjusted, in dependence on the format of the package, achieving the adjustment of both simultaneously.
  • the apparatus can enable packages to be withdrawn continuously and with a capability for adjustment in dependence on the format of the lids.
  • This advantageous condition is achieved by the provision of supply means formed by bars mounted on chains, the position of which can be adjusted relative to a surface for the sliding of the packages.
  • the overall structure of the supply means enables the surface 8 of the container 6a to be positioned at a convenient height for the operator, who does not have to lean over into the container in order to position the packages.
  • a vertical loading surface simplifies the structure and reduces its overall size, that is, it increases the available volume of the container for a given space occupied.
  • the presence of a vertical load surface which enables the useful volume of the container to be increased, is particularly advantageous when combined with cutting means according to the present invention which, amongst other advantages, reduce cutting times.
  • a loading apparatus 6 which is independent of the apparatus 1, with regard both to its the external structure and to the drive units, enables the apparatus 1 to be used with any means which brings the packages into the vicinity of the input region 9, including manual means.
  • the presence of gravity movement means not necessarily for the application described, enables optimal reliability to be achieved and costs to be kept low.
  • the need for example, for digital signals from one apparatus to the other to permit the movement of the lids and to stop the upstream apparatus in the event of stoppage of the downstream apparatus is avoided.
  • the gravity movement means as described above stop automatically, by their very nature, if the machine downstream is not in a position to receive further lids, since the thrust element and the counterweight encounter, in the row of lids, a resistance which opposes the weight of the counterweight. Moreover, as soon as functional capability is restored downstream, the counterweight automatically overcomes the resistance to its descent offered by the row of lids and pushes them by means of the thrust element until the last lid has left the apparatus.
  • the supply means do not therefore require signals to stop the movement of the lids in the event of malfunctions of the line downstream and do not therefore require reactivation of the system but, by their very nature, adapt automatically to the demand.
  • This means that the movement means allow the entire apparatus to operate between zero speed and maximum speed without adjustments, or rather with an automatic adjustment which does not require control by means of a signal from the receiving machine.
  • the presence of the magnetic means which can exert their force only during a predetermined stage of the operation of the apparatus permits the provision of particularly reliable anti-bouncing and anti-overturning means which do not complicate the structure of the apparatus as a whole. These means achieve their advantageous effect when associated with any seat for receiving, for example, lids, not necessarily for the application described.
  • the combination of the magnetic anti-bouncing and anti-overturning means with the gravity movement means as described above is particularly synergic.
  • the presence of the magnetic anti-bouncing and anti-overturning means, optionally associated with gravity movement means prevents the problems due to the turning-over of the first or last lid whilst nevertheless retaining a simple and reliable structure.
  • These problems may take the form, in order of increasing seriousness, of loss of a lid, of damage to the receiving seat or to the thrust element, of interruption of the process due to the fact that the turned-over lid is jammed along the communication casing between two processing devices, or of complete turning through 180° which causes stoppage of the machine filling the containers, with consequent loss of its sterility, in the case of food containers, and a risk of contamination of all of the containers being processed.
  • Variations and/or additions may be provided for the embodiments described and illustrated above.
  • the loading apparatus 6 may be independent of the apparatus 1, or the two apparatuses may form a single structure with a single drive unit.
  • the advantageous presence of an independent loading apparatus 6 may not be dependent on the internal characteristics of the apparatus 1, that is, on the configuration of the cutting means or of the means for moving the lids, but possibly on the configuration of the basic structure and of the input region of the apparatus 1. Combination with cutting and/or moving means as described above in any case gives rise to a generally simple and reliable apparatus.
  • the cutting heads as described above may have different configurations, for example, by the provision of a heated metal element instead of the jet of heated fluid.
  • the drive unit of the cutting heads 27 and/or of the movement means 38 may comprise a chain or a cable instead of the toothed belt described above, or any other type of transmission suitable for the purpose.
  • FIG. 14 A possible further embodiment of these means is shown, for example, in Figure 14 in which there is a permanent magnet 53, preferably arranged beneath the receiving seat 36 and mounted on the basic structure 5 so as to move towards the seat at a predetermined stage of the operation of the apparatus 1. This stage starts when the lids, free of wrapping film, move from the cutting station 19 to the receiving seat 36 and ends when the thrust element 39 acts actively on the last lid, preventing the first and last lids from overturning.
  • a permanent magnet 53 preferably arranged beneath the receiving seat 36 and mounted on the basic structure 5 so as to move towards the seat at a predetermined stage of the operation of the apparatus 1. This stage starts when the lids, free of wrapping film, move from the cutting station 19 to the receiving seat 36 and ends when the thrust element 39 acts actively on the last lid, preventing the first and last lids from overturning.
  • the movement of the permanent magnet may be performed as a translational movement towards and away from the seat 36.
  • the translational movement can be preferably vertical and the shape of the permanent magnet is similar to that of the electromagnet 52.
  • the permanent magnet is mounted for rotating on the basic structure 5, eccentrically relative to the axis of rotation, or is fitted on only a portion of a rotating support.
  • the rate of rotation is adjusted in a manner such that the minimum distance between the magnet and the seat 36, and hence the maximum attractive force exerted by the magnet on the lids, occurs during the above-mentioned stage.
  • the transfer apparatus is suitable for use for packages of objects in general, provided that they are formed by means of a wrapping film which holds the packaged objects close together.
  • This solution is applicable in particular for packages of axially symmetrical objects such as disks or the like, of a shape comparable with that of the above-described packages of lids.
  • the vertical loading surface may also be used in an apparatus of known type.
  • the provision of a loading apparatus which is independent of the apparatus 1 may also be adopted independently of the structure of the cutting and moving means.
  • the solution of a double output with a thrust element that can be mounted so as to be movable reversibly in the two directions may also be applied to conventional apparatuses and/or to other apparatus in order to improve their adaptability and versatility in relation to the work stations immediately downstream.
  • gravity movement means possibly combined with selectively active magnetic means, or selectively active magnetic means, possibly combined with gravity movement means, may be used independently of the presence of means for cutting the wrapping film.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Claims (29)

  1. Appareil de transfert pour transférer des objets, dans des couvercles particuliers (4), disposés près l'un de l'autre et constituant un groupe, l'appareil comprenant un siège (36) pour recevoir les objets et des moyens de mouvement (38) pour déplacer les objets le long du siège, les moyens de mouvement ayant un élément de poussée (39), caractérisé par des moyens anti-rebond et anti-renversement (51) pour les objets dans le siège (36), les moyens anti-rebond et anti-renversement (51) fonctionnant au moyen d'une force magnétique et étant connectés de manière opérationnelle à des moyens d'activation sélectifs, de sorte que la force magnétique soit appliquée aux objets pendant une phase de mouvement vers le siège (36) et reste active jusqu'à ce que l'élément de poussée (39) vienne en contact avec le dernier des objets.
  2. Appareil de transfert selon la revendication 1 dans lequel les moyens anti-rebond et anti-renversement (51) comprennent un électro-aimant (52) qui est monté de manière stationnaire relativement au siège (36) et est excité pendant ladite phase.
  3. Appareil de transfert selon la revendication 2, dans lequel l'électro-aimant (52) est disposé sous le siège (36) qui abrite les objets à transférer.
  4. Appareil de transfert selon la revendication 2 ou la revendication 3 dans lequel l'électro-aimant (52) a une forme allongée qui s'étend le long d'un axe longitudinal (BB) du siège (36).
  5. Appareil de transfert selon l'une quelconque des revendications 2 à 4, dans lequel l'électro-aimant (52) est placé en contact avec une paroi (37) définissant le siège (36), et a une paroi (52a) ayant sensiblement la même forme qu'au moins une portion de la paroi (37) définissant le siège (36).
  6. Appareil de transfert selon la revendication 1, dans lequel les moyens anti-rebonds et anti-renversement (51) comprennent un aimant permanent (53) monté sur une structure de base (5) de manière à déplacer vers le siège (36) pendant ladite phase.
  7. Appareil de transfert selon la revendication 6, dans lequel l'aimant permanent (53) est disposé sous le siège (36) pour recevoir les objets.
  8. Appareil de transfert selon la revendication 6, ou la revendication 7, dans lequel l'aimant permanent (53) est monté en coulissement sur la structure de base (5) de façon à se déplacer vers et loin du siège (36), ladite phase correspondant à la portion de la voie de l'aimant la plus proche du siège (36).
  9. Appareil de transfert selon la revendication 6 ou la revendication 7, dans lequel l'aimant permanent (53) est monté pour tourner sur la structure de base (5) de manière excentrique par rapport à l'axe de rotation, ou est fourni sur seulement une portion d'un support de rotation.
  10. Appareil de transfert selon la revendication 9, dans lequel la vitesse de rotation de l'aimant permanent (53) est ajustée de manière telle que la distance minimum entre l'aimant et le siège (36) est atteinte pendant ladite phase.
  11. Appareil de transfert selon l'une quelconque des revendications précédentes, dans lequel les moyens de mouvement (38) sont des moyens actionnés par poussée et par gravité, dans lequel l'élément de poussée (39) est adapté pour agir sur le dernier des objets du groupe, en se référant à la direction de transfert des objets, l'élément de poussée (39) étant associé de manière opérationnelle à un contrepoids (43) mobile entre une position surélevée et une position abaissée pendant la phase d'exercice de la poussée sur les objets.
  12. Appareil de transfert selon la revendication 11, dans lequel l'élément de poussée (39) a une section transversale de façon à adapter le siège (36).
  13. Appareil de transfert selon la revendication 11 ou la revendication 12, dans lequel l'élément de poussée (39) est associé de manière opérationnelle avec une coulisse (40) qui, à son tour, est coulissable sur un guide (41) et est reliée au contrepoids (43).
  14. Appareil de transfert selon la revendication 13 dans lequel la coulisse (40) est reliée au contrepoids (43) au moyen d'un câble flexible (44).
  15. Appareil de transfert selon la revendication 14, dans lequel le câble flexible (44) s'étend au moins partiellement autour d'une poulie (45), la portion du câble (44) s'étendant depuis la poulie (45) jusqu'au contrepoids (43) disposé verticalement.
  16. Appareil de transfert selon la revendication 13, dans lequel le guide (41) est monté sur une structure de base (5) de façon à être parallèle à un axe longitudinal (BB) du siège (36).
  17. Appareil de transfert selon l'une quelconque des revendications 13 à 16, dans lequel l'élément de poussée (39) et la coulisse (40) sont connectés par une tige rigide (42).
  18. Appareil de transfert selon les revendications 16 et 17, dans lequel la tige (42) est disposée transversalement à l'axe longitudinal (BB) du siège (36).
  19. Appareil de transfert selon l'une quelconque des revendications 11 à 18, dans lequel un élément de guidage (46) est fourni pour abriter et guider le contrepoids (43) pendant son mouvement.
  20. Appareil de transfert selon la revendication 19 dans lequel l'élément de guidage (46) comprend un tube de guidage.
  21. Appareil de transfert selon l'une quelconque des revendications 11 à 20, dans lequel des moyens de retour (47) sont ultérieurement fournis pour renvoyer le contrepoids de la position abaissée à la position surélevée.
  22. Appareil de transfert selon la revendication 21, dans lequel les moyens de retour (47) comprennent une courroie dentée (48) connectée opérationnellement à l'élément de poussée (39) et enroulée sur les éléments de transmission (49), dont un élément est relié de manière opérationnelle à une unité de moteur à engrenage (50).
  23. Appareil de transfert selon la revendication 21 ou 22, dans lequel les moyens de retour (47) comprennent en outre des moyens de détecteur pour détecter la position finale des objets et permettre le fonctionnement des moyens de retour (47) afin de renvoyer le contrepoids (39) dans la position surélevée.
  24. Appareil (1) pour enlever un film d'emballage (2) d'emballages (3) d'objets, en particulier de couvercles (4), comprenant des moyens (26) pour couper le film d'emballage (2), les moyens de découpe (26) étant montés sur l'appareil (1) dans une station de découpe (19) disposée entre une zone (9) pour l'entrée de paquets (3) et une zone (20) pour la sortie des objets sans film d'emballage (2), caractérisé en ce qu'il comprend un appareil de transfert selon l'une quelconque des revendications 1 à 23, disposé dans la zone de sortie (20).
  25. Appareil (1) selon la revendication 24, dans lequel le siège (36) reçoit les objets, depuis une station de découpe (19).
  26. Appareil (1) selon la revendication 24 ou la revendication 25, dépendant des revendications 11 à 23, dans lequel le contrepoids (43) est disposé sur le côté sur lequel la sortie des objets est disposée.
  27. Appareil (1) selon l'une quelconque des revendications 24 à 26, dans lequel les moyens de mouvement (38) peuvent également être bien montés de manière à diriger les objets le long du siège de réception (36) dans une direction ou dans la direction opposée.
  28. Appareil (1) selon l'une quelconque des revendications 24 à 27, dans lequel des moyens de coupe sont fournis (26) et comprennent deux têtes de coupe (27) associées, respectivement, à une unité de commande (30) pour provoquer la translation le long d'un axe sensiblement parallèle à un axe longitudinal (AA) d'un paquet (3a) disposé dans la station de coupe (19), et dans des directions opposées.
  29. Appareil pour appliquer un film d'emballage à un groupe d'objets, en particulier de couvercles (4), caractérisé en ce qu'il comprend un appareil de transfert selon l'une quelconque des revendications 1 à 23, disposé dans une zone pour l'entrée des objets à emballer.
EP02733214A 2002-04-23 2002-04-23 Appareil de transfert de couvercles Expired - Lifetime EP1534615B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2002/000265 WO2003091134A1 (fr) 2002-04-23 2002-04-23 Appareil de transfert de couvercles

Publications (2)

Publication Number Publication Date
EP1534615A1 EP1534615A1 (fr) 2005-06-01
EP1534615B1 true EP1534615B1 (fr) 2007-01-17

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ID=29266780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02733214A Expired - Lifetime EP1534615B1 (fr) 2002-04-23 2002-04-23 Appareil de transfert de couvercles

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Country Link
EP (1) EP1534615B1 (fr)
AU (1) AU2002306229A1 (fr)
DE (1) DE60217733D1 (fr)
WO (1) WO2003091134A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2221251A1 (fr) * 2009-02-24 2010-08-25 Magnetic Conveyor Systems S.r.l. Dispositif de stockage et de guide pour articles en matériau ferromagnétique et appareil pour l'élimination d'un film de protection de paquets d'articles

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CN104909017A (zh) * 2015-06-26 2015-09-16 清远凯德自动化及精密制造有限公司 一种全自动薄膜拆包机
DE102016007783A1 (de) * 2016-06-24 2017-12-28 Giesecke+Devrient Currency Technology Gmbh Verfahren, Vorrichtung und System zum Öffnen von Wertdokumentverpackungen
CN114952041A (zh) * 2022-06-15 2022-08-30 青岛颐中科技有限公司 一种激光打孔装置
CN115432256B (zh) * 2022-10-12 2024-02-20 黑龙江大学 一种圆柱形带手撕条塑料包装类产品手撕条自动剥离机

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US3032945A (en) * 1959-02-05 1962-05-08 Container Corp Can packing apparatus
US4312172A (en) * 1980-03-14 1982-01-26 United States Gypsum Company Automatic lid placing apparatus for large plastic lids and method for placing lids
JPS605485B2 (ja) * 1981-08-21 1985-02-12 アサヒビール株式会社 缶蓋移送装置
NL9401416A (nl) * 1994-08-31 1996-04-01 Thomassen & Drijver Inrichting voor het richten van deksels.
US5816385A (en) * 1996-10-16 1998-10-06 Murata Manufacturing Co., Ltd. Magnetic conveying device with non-magnetic guide rails

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2221251A1 (fr) * 2009-02-24 2010-08-25 Magnetic Conveyor Systems S.r.l. Dispositif de stockage et de guide pour articles en matériau ferromagnétique et appareil pour l'élimination d'un film de protection de paquets d'articles
ITMI20090254A1 (it) * 2009-02-24 2010-08-25 Magnetic Conveyor Systems S R L Dispositivo di accumulo e di guida per articoli in materiale ferromagnetico, ed apparecchiatura per la rimozione di una pellicola di protezione da pacchetti di articoli avente il dispositivo stesso.

Also Published As

Publication number Publication date
AU2002306229A1 (en) 2003-11-10
DE60217733D1 (de) 2007-03-08
EP1534615A1 (fr) 2005-06-01
WO2003091134A1 (fr) 2003-11-06

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