EP2954990B1 - Device for perforating a film - Google Patents

Device for perforating a film Download PDF

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Publication number
EP2954990B1
EP2954990B1 EP14172179.5A EP14172179A EP2954990B1 EP 2954990 B1 EP2954990 B1 EP 2954990B1 EP 14172179 A EP14172179 A EP 14172179A EP 2954990 B1 EP2954990 B1 EP 2954990B1
Authority
EP
European Patent Office
Prior art keywords
film
perforating
perforation
conveyor belt
support structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14172179.5A
Other languages
German (de)
French (fr)
Other versions
EP2954990A1 (en
Inventor
Frédéric Henry SCHLOESSER
Mireille Paula FLUZIN
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.)
Diopass SPRL
Original Assignee
Diopass SPRL
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
Priority to ES14172179.5T priority Critical patent/ES2596315T3/en
Application filed by Diopass SPRL filed Critical Diopass SPRL
Priority to PL14172179T priority patent/PL2954990T3/en
Priority to PT141721795T priority patent/PT2954990T/en
Priority to EP14172179.5A priority patent/EP2954990B1/en
Priority to PCT/EP2015/062884 priority patent/WO2015189238A1/en
Priority to US15/317,184 priority patent/US10232525B2/en
Priority to RU2016150552A priority patent/RU2656428C1/en
Publication of EP2954990A1 publication Critical patent/EP2954990A1/en
Application granted granted Critical
Publication of EP2954990B1 publication Critical patent/EP2954990B1/en
Priority to HRP20161263TT priority patent/HRP20161263T1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/20—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor

Definitions

  • the present invention relates to a device for perforating a pull-down film comprising means for feeding the unwinding film, at least one perforation element which has a perforation position of said unwinding film and a withdrawal position, as well as means for receiving said perforated film fed.
  • such a device is coupled to a shrinkwrapper intended for packaging containers such as bottles or cans.
  • the perforating device integrated into the shrinkwrapper makes it possible to provide a pre-perforated film before the packaging of containers.
  • the film, preferably heat-shrinkable, obtained can then be used to package a series of containers.
  • the document FR 2 986 509 discloses such a perforating device integrated into a shrinkwrapper.
  • the figure 3 of the document illustrates a perforating device which comprises a first roller equipped with a fitted knife acting as a perforating element and a second roller provided with a groove arranged to receive the aforesaid knife.
  • the first and second rollers are substantially contiguous such that the unwinding film is pinched, held, and driven along a guide surface.
  • the film when the film is fed into the device, it is unwound to reach the height of the two aforementioned adjacent rollers.
  • the film When the film reaches the first and second rollers, it adopts the cylindrical surface of the second roll to be perforated by the knife which is in the perforating position and arranged perpendicularly to the surface of the film.
  • the two rollers maintain and stretch the film on both sides of the groove at the time of perforation, which can also complicate the control of the film running speed.
  • the knife adopts its withdrawal position and the film continues its progression in the shrinkwrapper.
  • This perforation device has the disadvantage of being able to cause tearing of the film. Indeed, the two rollers are contiguous and pinch the film so much that they can cause its tear before, during or after perforation.
  • the shape of the perforation obtained on the film using the disclosed device is limited by the shape of the cutting object of the first roll which must be able to fit in the predefined shape of the groove of the opposite roll.
  • the only cutting object used is a knife which must be received by the groove. The use of the device taught is therefore severely limited for users, who are forced to perforate their film using a single perforation element offering a single form of perforation.
  • the known device is therefore limited to offer the user a single type of pattern with a single type of spacing possible.
  • the disclosed device makes access to the film difficult because the two rollers are contiguous. Therefore, when an element remains stuck in the groove of the second roller, access to the film remains difficult. The maintenance of such a device is therefore also strongly limited.
  • the disclosed device does not provide a quality perforation with reliable accuracy and reproducibility that is guaranteed and ensured over time.
  • the flexibility of use of such a device is further strongly limited while the needs of users in this field of application are only growing.
  • the object of the invention is to overcome the disadvantages of the state of the art by providing a versatile perforating device, with a flexibility, expected by users, which is reliable and whose perforations are accurate, guaranteed and reproducible.
  • the conveyor belt of the perforating device according to the present invention offers several advantages.
  • the film has a flat surface that can receive and transport the unwinding film at a predetermined speed and in a predetermined direction. So when the drop-down film reaches the flat surface of the conveyor belt, it is driven substantially at the predetermined speed of movement of the conveyor belt and in the predetermined direction thereof.
  • the film is unwound on a flat surface which greatly facilitates its perforation by the perforation element or elements. Indeed, at the time of perforation, the film remains supported by the conveyor belt without the possibility of being stretched by the perforation elements.
  • the perforation is therefore precise since it is made on a substantially flat surface and the perforation element is such that, in the perforation position, not only does it pass through the film, but it also enters the conveyor belt through which it passes through the surface plane.
  • the penetrable flat surface of the conveyor belt facilitates the perforation of the film it carries and it can be penetrated by any perforation element, regardless of its shape.
  • the reel according to the invention is particularly advantageous in that its axis of rotation is disposed at a distance from the flat surface of the conveyor belt. There is no need for two contiguous rollers that pinch the film and can tear it during its course.
  • the arrangement of the reel away from the conveyor belt makes access to the film easier, unlike the state of the art using two adjacent rollers. Therefore, in the event of maintenance or breakdown of the device, the arrangement of each element forming the perforation device according to the invention makes it easier to access the film.
  • said at least one support structure of the reel can be provided with at least one perforation element which can be easily substituted by another so as to adapt the shape of the perforations in the film.
  • the perforating device according to the invention allows to achieve accurate perforations, reliable and reproducible with assured quality.
  • the term "penetrable flat surface" of the conveyor belt is understood to mean a conveyor belt which has on its surface a material that can be penetrated by a perforation element according to the present invention.
  • the surface material of the conveyor belt can be in the form of a brush, bristles, a felt, a foam, their combination or any other material that can be penetrated and without limiting the shape. of the perforation element.
  • said conveyor belt has on said plane surface a first predetermined velocity vector and said at least one perforation element has, in perforation position, a second predetermined velocity vector which is identical to said first predetermined velocity vector.
  • the term "velocity vector” is understood to mean a vector which is defined by a value, a direction and a direction.
  • the "first speed vector” refers to the conveyor belt.
  • the "first speed vector” has a direction and a direction corresponding to the direction of travel of the film and the conveyor belt.
  • the predetermined speed of the conveyor belt defines the intensity (the value) of this "first velocity vector”.
  • the conveyor belt moves with the film at a certain speed, in a direction and a predefined direction which are represented by this "first velocity vector”.
  • the perforation element has many velocity vectors because it rotates around the axis of rotation of the reel.
  • the velocity vector of interest in the context of the present invention relates to the so-called "second velocity vector” which refers to that of the perforation element in the perforation position.
  • the "second velocity vector” is directed and oriented in the same direction as the "first velocity vector” of the conveyor belt.
  • the "first velocity vector” according to the invention is parallel to the "second velocity vector”.
  • said at least one perforation element has a substantially planar surface arranged to be in contact with the flat surface of the conveyor belt.
  • the surface of the perforation element, the surface of the film and the flat surface of the conveyor belt thus extend substantially in the same plane.
  • each perforation element may have a different form of cutting on a substantially flat surface which facilitates replacement with other cutting shapes which advantageously also have a flat surface.
  • the device according to the invention is not limited to a single form of cutting.
  • said at least one perforation element comprises a face front end provided with cutting elements and a back face arranged to be received by said at least one support structure.
  • said at least one support structure has a pivot axis around which at least one perforation element rotates.
  • the perforation elements according to the invention rotate synchronously with respect to the pivot axis of the support structure and the axis of rotation of the reel.
  • the device comprises at least one additional reel disposed opposite an additional flat surface of the conveyor belt, also intended to receive the film.
  • the device may for example comprise a conveyor belt located between two reels for making perforations on the unwinding film in two successive locations.
  • the device according to the invention comprises at least one additional conveyor belt and on it at least one additional flat surface to receive the additional film.
  • the perforation device according to the invention may for example comprise a reel located between two conveyor belts to perform the perforations on the unwinding film in two successive locations.
  • said conveyor belt may be mounted on at least two cylinders arranged to rotate.
  • the conveyor belt is supported by at least two cylinders, preferably four cylinders, so as to provide a sufficiently flat surface of the conveyor belt, for example between two of these cylinders.
  • the reel axis has first and second ends each provided with a side wall and at least one aforesaid support structure extending from one side wall to the other.
  • said device comprises at least one guide such as a cylinder to adjust the spacing between each perforation pattern.
  • the perforation device according to the invention comprises a reel located between two conveyor belts.
  • the predetermined speed of the conveyor belt is between 20 and 400 meters per minute (m / min), preferably between 100 and 350 m / min, more preferably between 150 and 350 m / min. min, advantageously between 200 and 350 m / min.
  • said at least one perforation element has a geometric shape chosen from the group consisting of the semicircle, the circle, the part of a circle such as the arc of a circle, the square, of a straight line, a curved line, a rectangle, a triangle, or their combinations.
  • This particular embodiment has a very advantageous advantage for the device according to the invention because it meets the needs of users who wish to have a versatile perforating device.
  • the at least one perforation element can be substituted as desired to obtain the desired perforation shape.
  • the user wishes to perform a square-shaped perforation, it suffices to use a perforation element having a square geometric shape provided with the device, to fix it on the support structure and to operate the device to obtain the selected pattern on the pierceable film.
  • the replacement of a perforation element is made easy by the device according to the invention since, not only is access to the film guaranteed, but access to at least one perforation element is easy.
  • the present invention also relates to a printing line comprising the perforation device according to the present invention.
  • the perforating device is such that it can be integrated into a printing line, which is particularly unexpected in view of current perforating devices which can not provide a perforation at the same speed as that at which the film unrolls.
  • the present invention also relates to a shrinkwrapper which comprises the perforation device according to the invention.
  • a perforation device in which a film 1 drop is fed by two feed means 2a, 2b to a conveyor belt 4 which has a penetrable flat surface 5.
  • the conveyor belt 4 is mounted on 4 cylinders but can just as well be supported by at least 2 cylinders. At least one of these cylinders is capable of driving the moving belt 4 in a known manner, not shown, and at a predetermined speed.
  • the film 1 is received on this band 4 and is conveyed by it at this speed.
  • each reel 6 and 6' has an axis of rotation 7 and 7 'around which revolve a first support structure 8A, 8A' comprising four perforation elements 3A, 3A 'and a second support structure 8B, 8B 'comprising four perforation elements 3B, 3B'.
  • the axis of rotation 7 and 7 'of each reel 6 and 6' is parallel to the surface of the strip 4, and is therefore arranged perpendicularly to the running direction D of the film 1, at a distance therefrom.
  • each reel 6 and 6' have, in this example, a first end and a second end each provided with a side wall 10.
  • Each support structure 8A, 8A ' , 8B, 8B 'of a reel 6 and 6' extends from one side wall to the other of the axis of rotation 7 and 7 '.
  • each main reel thus comprises at each of its ends a side wall and a central wall at its center.
  • the device according to the invention has on both sides of the conveyor belt 4 four reels 6 and 6 'and therefore two reels 6 above the band 4 and two reels 6' below the band 4, each reel comprising at their ends side walls.
  • the reels 6 and 6 ' are preferably independent of each other.
  • the device may also comprise two reels 6 and 6 'located on either side of the conveyor belt 4, one above the first flat surface 5 of the conveyor belt 4 and the other below the additional planar surface 5 'of the strip 4.
  • Each perforation element 3A, 3B, 3A 'and 3B' illustrated in FIGS. figures 1 , 2 has a front face provided with cutting elements, such as needles or a blade, and a substantially flat back face.
  • the front face of each perforation element 3A, 3B, 3A 'and 3B' preferably the cutting elements of each perforating element 3A, 3B, 3A 'and 3B', can or can rest on the In this way, when the film 1 is conveyed by the strip 4, the strip 4 is held between the perforating elements 3A, 3B, 3A 'and 3B', in the perforation position P. , and the flat surface 5, 5 'on which the film 1 conveyed by the strip 4 rests.
  • the perforation elements 3A of the first support structure 8A of the reel 6 situated above the conveyor belt 4 perforate the film 1, when they are in the perforation position P, whereas the elements of FIG. perforation 3B of the second support structure 8B of the reel 6 are not provided to perforate the film in this preferred configuration.
  • the perforation elements 3B 'of the reel 6', located below the conveyor belt 4 are those provided for perforating the film while the perforation elements 3A 'are not arranged to perforate said film 1.
  • the four perforation elements 3A of the first support structure 8A of the reel 6 are in the perforation position P
  • the four perforation elements 3B of the second support structure 8B located opposite of the first support structure 8A
  • the four perforation elements 3A of the first support structure 8A perforate the film 1 to then rotate 360 ° and perforate it again.
  • the four perforation elements 3B of the second support structure 8B play, in this particular mode, simply the counterweight role for the perforation elements 3A of the first support structure 8A.
  • the perforation provided with the aid of this particular embodiment is then even more precise.
  • the front faces A of the perforation elements 3A of the first support structure 8A of the reel 6 are directed towards the film 1.
  • the dorsal faces B of the perforation elements 3B of the second support structure 8B are directed towards the film 1 to prevent these perforation elements 3B from coming into contact with the film 1.
  • the elements perforation 3B of the second support structure 8B may be useful in case of replacement of the perforation elements 3A of the first support structure 8A. This is also applicable to the reel 6 'disposed below the conveyor belt 4.
  • perforation elements 3B of the second support structure 8B may be substituted by another element so as to be able to counteract the weight of the first support structure 8A which comprises the perforation elements 3A. This costs also for the reel 6 'located below the conveyor belt 4.
  • the perforation element has a circle-shaped pattern ( figure 3 ). It is understood that the forms of perforations can be varied and for example have another shape such as circular, rectilinear, curved, rectangular, square, triangular or any other geometric shapes.
  • the film 1 has a first row of perforations which comprises eight percent of a circle and a second row comprising eight 3 ⁇ 4 of a circle.
  • receiving means 12 are present in the form of a cylinder. In this way, the latter receive the perforated film 1 in order to guide it to the additional flat surface 5 'of the conveyor belt 4.
  • the film 1 can be unwound at a speed of between 20 and 400 meters per minute (m / min), preferably between 100 and 350 m / min, more preferably between 150 and 350 m / min, advantageously between 200 and 350 m / min.
  • m / min meters per minute
  • the perforation device is fed with a perforable film 1 by means of the rotary cylinders 2a, 2b which bring it to the first flat surface 5 of the conveyor belt 4.
  • the first flat surface 5 of the conveyor belt 4 shows a first velocity vector V 1 .
  • the direction and direction of the first vector V 1 are those corresponding to the direction of travel of the film 1, when it is transported by this first flat surface 5 of the strip 4.
  • the intensity of the first vector V 1 is equal to that of the predetermined speed of displacement of the conveyor belt 4 and therefore to that of the film 1 drop down.
  • the perforation elements 3A When the film 1 reaches the first flat surface 5 of the strip 4, the perforation elements 3A are in the perforation position P and perforate the latter being perpendicular to the running direction D of the film 1. Thus, in the perforation position P , the perforation elements 3A have a second velocity vector V 2 identical to the first velocity vector V 1 of the first penetrable flat surface 5 of the strip 4.
  • the figures 1 and 2 allow to highlight the two positions of the perforation elements 3A, 3B, 3A 'and 3B' namely the perforation position P and the retracted position R.
  • the perforation elements 3A and 3B are rotated relative to the first flat surface 4 of the band 5, they move away and then move successively to the surface 5 of the band 4 which conveys the film
  • the perforating elements 3B are in the retracted position R with respect to the unwinding film 1, they are moved away from the first flat surface 5 and the perforation of the film 1 does not take place.
  • the perforation elements 3A reach the first flat surface 5 of the strip 4, they adopt a perforation position P which allows them to perforate the film 1.
  • the perforation elements 3A or 3B adopt their retracted position R and the film 1 can continue to travel to the two receiving cylinders 12 which guide it to the second flat surface 5 'of the conveyor belt 4 where the second perforation line is made.
  • the perforation elements 3B ' are parallel to the film and perforate it by penetrating the second flat surface 5' of the conveyor belt 4 as described above for producing the first line of perforations.
  • the perforation elements 3B 'of the reels 6' located below the conveyor belt 4, perforate the film, they also have a second velocity vector V 2 identical to the first velocity vector V 1 .
  • the direction of the second vector V 2 of the perforation elements 3B 'of the second support structure 8B' is opposite to that of the perforation elements 3A of the first support structure 8A of the reel 6 located above the conveyor belt 4.
  • the conveyor belt 4 serves as support for the perforating elements 3A, 3B, 3A 'and 3B' which can easily perforate the film successively through the first planar surface and then the second (additional) planar surface 5 of the conveyor belt 4 while maintaining a constant speed of scrolling of the film.
  • the resulting film 1 can be used to package bottles, cans or other containers. Once packaged, the extraction of a bottle or a can is made easy thanks to the perforations on the film that is next to the bottles or cans. Thus, the withdrawal of a bottle or a can is achieved without necessarily tearing the entire film 1 which sufficiently holds the bottles or cans remaining in the package.
  • the film 1 used in the device according to the invention can be of any nature and function. However, a heat-shrinkable packaging film 1 is preferred.
  • the figure 3 represents a perforating element 3 which can be positioned on the support structure 8, 8 ', 8A, 8B, 8A' and 8B 'of the perforating device according to the invention.
  • the support structure 8A, 8B, 8A 'and 8B' of the device may contain a reception zone on which the perforation element 3 is fixed.
  • the perforation element 3 has a substantially flat surface which is provided with three holes which allow to fix it to the support structure 8A, 8B, 8A 'and 8B' of the perforating device according to the invention. It is understood that the perforation element 3 can simply be clipped onto the support structure 8A, 8B, 8A 'and 8B' to facilitate its replacement.
  • the support structure 8A, 8B, 8A 'and 8B' may comprise receiving means for the perforation elements 3.
  • the support structure 8A, 8B, 8A 'and 8B' may comprise grooves, grooves or grooves in which the perforating element 3 can slide, which facilitates the replacement of the perforating element 3.
  • the perforation element 3 comprises, peripherally, cutting needles which cover a portion of the peripheral surface. In this way, it is possible to form a circle-shaped pattern using such a perforation tool.
  • the figure 4 represents a preferred embodiment of the device according to the present invention and illustrates all the elements described in figures 1 and 2 .
  • the arrangement of the parts is different in that the device comprises a reel 6 located between a first and a second conveyor belt 4 4 '.
  • the first conveyor belt 4 ' is located above the reel 6 and therefore its first planar surface 5' is arranged to receive the film 1 unwinding.
  • the second conveyor belt 4 is located below the reel 6 and its first flat surface 5 is also arranged to receive and convey the film 1 unwinding.
  • the feeding of the film 1 into the device is carried out by means of two rotating feed rollers 2a, 2b.
  • the film 1 is thus received by the first flat surface 5 'of the first conveyor belt 4'.
  • the reel 6 comprises two support structures 8 which comprise respectively eight perforation elements 3 (not shown).
  • the perforation elements 3 which are, in perforation position, below the first band conveyor 4 '.
  • the perforated film 1 is fed to the two receiving cylinders 12 which direct it towards the first flat surface 5 of the second conveyor belt 4, situated below the reel 6. Again, the perforation operation starts again, but this time here, the perforation elements 3 are in perforation position so that they perforate the film 1 being located just above the second conveyor belt 4.
  • the perforated film 1 is received and redirected by two receiving cylinders 2c, 2d which receive the film 1.
  • the film 1 has a series of patterns in the form of% circles.
  • Each perforation element 3 has the shape of a circle 3 ⁇ 4. It is possible to replace the shape of the perforation element 3 with another for example to change the shape of the precut or simply to replace a piercing member 3 used.
  • the film 1 has a first and a second row of perforations where each row comprises eight 3 ⁇ 4 circles.
  • Each perforation element 3 has the shape of a% circle.
  • the resulting film 1 can be used to package bottles, cans or other containers.
  • This embodiment is particularly advantageous because it simply requires the establishment of a single reel 6 disposed between two conveyor belts 4 to perforate the film 1 drop.
  • This preferred mode further facilitates the integration of the perforating device according to the invention with a printing line which requires a continuous unwinding of the film 1 at relatively high speeds.
  • the figures 5 and 6 illustrate an advantageous reel 6 of the perforating device according to the invention which comprises a first support structure 8 and a second support structure 8 ', which have a pivot axis AA.
  • Each support structure 8 and 8 ' comprises perforating elements 3 and 3' which are arranged to rotate about the pivot axis AA of the corresponding support structure 8 and 8 '.
  • the reel 6 has an axis of rotation 7 around which also rotate the perforation elements 3 and 3 'which rest on the support structures 8 and 8'.
  • the number of belts used can be at least 2.
  • the first belt 13A connects the pivot axis AA of the first support structure 8 to a fixed pulley, preferably concentric with respect to the axis of rotation 7 of the reel 6.
  • the second (13B ) and third belts 13C connect the pivot axis AA of the second support structure 8 'to the fixed pulley, preferably concentric with respect to the axis of rotation 7 of the reel 6.
  • each perforation element 3 and 3 ' has a front face A provided with a cutting element such as a blade and a back face B intended to be fixed on the support structure 8 and 8'.
  • the reel 6 is rotated by means of at least one motor (not shown) which drives the axis of rotation 7 of the reel 6.
  • the perforation elements 3 of the first support structure 8 are in the perforation position P.
  • the front faces A of the perforation elements 3 are directed towards the film 1 (not shown) to perforate it as explained in the previous figures.
  • the perforation elements 3 'of the second support structure 8' are opposite to the first support structure and their front face is located in the opposite direction to that of the end faces of the perforation elements 3 of the first support structure 8.
  • each perforation element 3, 3 ' rotates on itself and with respect to their pivot axis AA. In this way, the rotation of the perforation elements 3, 3 'is performed synchronously such as a satellite rotation.
  • the perforation elements 3, 3 ' perform a double rotation, one with respect to the pivot axis of their support structure 8, 8' and the other relative to to the axis of rotation 7 of the reel 6.
  • the figure 6 illustrates the perforation elements 3, 3 'of the figure 5 after a rotation of 180 ° which corresponds to a retracted position R.
  • the perforation elements 3 'of the second support structure 8' can not perforate the film 1 (not shown) when it reaches its height as their dorsal face faces the film 1.
  • this particularly advantageous embodiment can be integrated in the perforation device according to the invention to increase the precision of cutting.
  • the reel taken over figures 5 and 6 will preferably be integrated into the perforation device illustrated in figures 1 and 2 .
  • the perforation device may comprise several reels 6 and several conveyor belts 4.
  • a conveying belt 4 and 4 'according to the invention may advantageously be supported by at least two cylinders or any other element which make it possible to provide a substantially flat surface 5 and 5' of the conveyor belt 4 and 4 '.
  • the perforating device may comprise at least one guide 12 such as a rotating cylinder to adjust the spacing between each perforation pattern.
  • the position of the guide makes it possible to control the distance between each perforation pattern.
  • the device according to the present invention comprises at least 1 reel, preferably 2 reels, more preferably four reels.
  • the device according to the present invention comprises four reels, two reels are advantageously arranged on either side of a conveyor belt and the two reels are preferably connected to one another at one of their end at means of a central wall which makes it possible to stiffen the structure obtained.
  • the device according to the invention can use at least one motor or equivalent means to operate the elements of the device.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)
  • Magnetic Heads (AREA)
  • Formation Of Insulating Films (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Description

La présente invention se rapporte à un dispositif de perforation d'un film déroulant comprenant des moyens d'alimentation du film déroulant, au moins un élément de perforation qui présente une position de perforation dudit film déroulant et une position de retrait ainsi que des moyens de réception dudit film perforé alimenté.The present invention relates to a device for perforating a pull-down film comprising means for feeding the unwinding film, at least one perforation element which has a perforation position of said unwinding film and a withdrawal position, as well as means for receiving said perforated film fed.

Généralement, un tel dispositif est couplé à une fardeleuse prévue pour emballer des conteneurs tels que des bouteilles ou des canettes. De cette façon, le dispositif de perforation intégré à la fardeleuse permet de procurer un film pré-perforé avant l'emballage de conteneurs. Le film, de préférence thermorétractable, obtenu peut alors servir à emballer une série de conteneurs.Generally, such a device is coupled to a shrinkwrapper intended for packaging containers such as bottles or cans. In this way, the perforating device integrated into the shrinkwrapper makes it possible to provide a pre-perforated film before the packaging of containers. The film, preferably heat-shrinkable, obtained can then be used to package a series of containers.

Le document FR 2 986 509 divulgue un tel dispositif de perforation intégré à une fardeleuse. La figure 3 du document illustre un dispositif de perforation qui comprend un premier rouleau équipé d'un couteau emmanché faisant office d'élément de perforation et un deuxième rouleau muni d'une rainure agencée pour recevoir le couteau susdit. Les premier et deuxième rouleaux sont sensiblement contigus de telle façon que le film déroulant est pincé, tenu et entraîné le long d'une surface de guidage.The document FR 2 986 509 discloses such a perforating device integrated into a shrinkwrapper. The figure 3 of the document illustrates a perforating device which comprises a first roller equipped with a fitted knife acting as a perforating element and a second roller provided with a groove arranged to receive the aforesaid knife. The first and second rollers are substantially contiguous such that the unwinding film is pinched, held, and driven along a guide surface.

Ainsi, lorsque le film est alimenté dans le dispositif, il est déroulé pour arriver à hauteur des deux rouleaux précités contigus. Lorsque le film atteint les premier et deuxième rouleaux, celui-ci adopte la surface cylindrique du deuxième rouleau pour être perforé par le couteau qui est en position de perforation et disposé perpendiculairement à la surface du film. De cette façon, les deux rouleaux maintiennent et étirent le film de part et d'autre de la rainure au moment de la perforation, ce qui peut d'ailleurs compliquer le contrôle de la vitesse de défilement du film. En sortie de perforation, le couteau adopte sa position de retrait et le film continue sa progression dans la fardeleuse.Thus, when the film is fed into the device, it is unwound to reach the height of the two aforementioned adjacent rollers. When the film reaches the first and second rollers, it adopts the cylindrical surface of the second roll to be perforated by the knife which is in the perforating position and arranged perpendicularly to the surface of the film. In this way, the two rollers maintain and stretch the film on both sides of the groove at the time of perforation, which can also complicate the control of the film running speed. At the exit of perforation, the knife adopts its withdrawal position and the film continues its progression in the shrinkwrapper.

Ce dispositif de perforation présente l'inconvénient de pouvoir provoquer le déchirement du film. En effet, les deux rouleaux sont contigus et pincent tellement le film qu'ils peuvent entraîner sa déchirure avant, pendant ou après perforation.This perforation device has the disadvantage of being able to cause tearing of the film. Indeed, the two rollers are contiguous and pinch the film so much that they can cause its tear before, during or after perforation.

En outre, la forme de la perforation obtenue sur le film à l'aide du dispositif divulgué est limitée par la forme de l'objet coupant du premier rouleau qui doit être capable de se loger dans la forme prédéfinie de la rainure du rouleau opposé. Dans le document précité, le seul objet coupant utilisé est un couteau qui doit être reçu par la rainure. L'utilisation du dispositif enseigné est donc fortement limitée pour les utilisateurs, qui sont contraints de perforer leur film à l'aide d'un seul élément de perforation offrant une seule forme de perforation.In addition, the shape of the perforation obtained on the film using the disclosed device is limited by the shape of the cutting object of the first roll which must be able to fit in the predefined shape of the groove of the opposite roll. In the aforementioned document, the only cutting object used is a knife which must be received by the groove. The use of the device taught is therefore severely limited for users, who are forced to perforate their film using a single perforation element offering a single form of perforation.

Enfin, il est manifeste que la localisation des perforations est prédéfinie et que les perforations sont obtenues avec la même distance d'espacement. Donc, lorsque la distance entre deux perforations doit être modifiée, il est indispensable de substituer les premier et deuxième rouleaux par des rouleaux ayant un diamètre supérieur ou inférieur.Finally, it is clear that the location of the perforations is predefined and that the perforations are obtained with the same spacing distance. Therefore, when the distance between two perforations must be changed, it is essential to substitute the first and second rollers with rollers having a greater or smaller diameter.

Le dispositif connu se limite donc à offrir à l'utilisateur un seul type de motif avec un seul type d'espacement possible.The known device is therefore limited to offer the user a single type of pattern with a single type of spacing possible.

Enfin, le dispositif divulgué rend l'accès au film difficile car les deux rouleaux sont contigus. Donc, lorsqu'un élément reste bloqué dans la rainure du deuxième rouleau, l'accès au film reste difficile. La maintenance d'un tel dispositif est donc également fortement limitée.Finally, the disclosed device makes access to the film difficult because the two rollers are contiguous. Therefore, when an element remains stuck in the groove of the second roller, access to the film remains difficult. The maintenance of such a device is therefore also strongly limited.

Pour les raisons précitées, il apparaît que le dispositif divulgué ne permet pas d'obtenir une perforation de qualité avec une précision fiable et une reproductibilité qui soit garantie et assurée au cours du temps. La souplesse d'utilisation d'un tel dispositif est en outre fortement limitée alors que les besoins des utilisateurs dans ce domaine d'application ne font que croître.For the reasons mentioned above, it appears that the disclosed device does not provide a quality perforation with reliable accuracy and reproducibility that is guaranteed and ensured over time. The flexibility of use of such a device is further strongly limited while the needs of users in this field of application are only growing.

L'invention a pour but de pallier les inconvénients de l'état de la technique en procurant un dispositif de perforation polyvalent, présentant une flexibilité, tant attendue par les utilisateurs, qui soit fiable et dont les perforations réalisées sont précises, garanties et reproductibles.The object of the invention is to overcome the disadvantages of the state of the art by providing a versatile perforating device, with a flexibility, expected by users, which is reliable and whose perforations are accurate, guaranteed and reproducible.

A l'heure actuelle il existe un réel besoin de fournir un dispositif de perforation capable d'offrir une pluralité de perforations avec des formes variées et qui puisse garantir une perforation d'un film déroulé en continu, par exemple sur une ligne d'impression.At present there is a real need to provide a perforating device capable of offering a plurality of perforations with various shapes and which can guarantee perforation of a film unrolled continuously, for example on a printing line. .

Pour résoudre les problèmes précités, il est prévu suivant l'invention, un dispositif de perforation, tel qu'indiqué au début, caractérisé en ce qu'il comprend en outre :

  • une bande convoyeuse présentant une surface plane pénétrable par au moins un élément de perforation susdit, ayant une vitesse de déplacement prédéterminée et étant agencée pour recevoir le film déroulant sur la surface susdite et le convoyer sur celle-ci à ladite vitesse prédéterminée suivant un sens prédéterminé,
  • un moulinet présentant un axe de rotation qui est disposé parallèlement à ladite surface plane, à distance de celle-ci et perpendiculairement audit sens prédéterminé de déplacement dudit film sur ladite surface plane de la bande convoyeuse et autour duquel est entraîné en révolution au moins une structure de support munie d'au moins un élément de perforation précité, et
  • en ce que, dans ladite position de perforation du film déroulant, ledit au moins un élément de perforation perfore le film et pénètre au moins partiellement à travers la surface plane de ladite bande convoyeuse.
To solve the aforementioned problems, a perforation device is provided according to the invention, as indicated at the beginning, characterized in that it further comprises:
  • a conveyor belt having a flat surface penetrable by at least one aforesaid perforating element, having a predetermined speed of movement and being arranged to receive the unwinding film on the aforesaid surface and convey it thereon at said predetermined speed in a predetermined direction ,
  • a reel having an axis of rotation which is disposed parallel to said planar surface, at a distance thereof and perpendicular to said predetermined direction of movement of said film on said flat surface of the conveyor belt and around which is rotated at least one structure support member provided with at least one perforation element, and
  • in that in said position of perforation of the unwinding film, said at least one perforation element perforates the film and penetrates at least partially through the flat surface of said conveyor belt.

La bande convoyeuse du dispositif de perforation suivant la présente invention offre plusieurs avantages.The conveyor belt of the perforating device according to the present invention offers several advantages.

D'une part, elle présente une surface plane qui permet de recevoir et de transporter le film déroulant à une vitesse prédéterminée et suivant un sens prédéterminé. Ainsi, lorsque le film déroulant atteint la surface plane de la bande convoyeuse, celui-ci est entraîné sensiblement à la vitesse de déplacement prédéterminée de la bande convoyeuse et suivant le sens prédéterminé de celle-ci. Ainsi, le film est déroulé sur une surface plane ce qui facilite fortement sa perforation par le ou les éléments de perforation. En effet, au moment de la perforation, le film reste soutenu par la bande convoyeuse sans possibilité d'être étiré par les éléments de perforation. La perforation est donc précise puisqu'elle est réalisée sur une surface sensiblement plane et l'élément de perforation est tel que, en position de perforation, non seulement il traverse le film mais en outre il pénètre dans la bande convoyeuse dont il traverse la surface plane.On the one hand, it has a flat surface that can receive and transport the unwinding film at a predetermined speed and in a predetermined direction. So when the drop-down film reaches the flat surface of the conveyor belt, it is driven substantially at the predetermined speed of movement of the conveyor belt and in the predetermined direction thereof. Thus, the film is unwound on a flat surface which greatly facilitates its perforation by the perforation element or elements. Indeed, at the time of perforation, the film remains supported by the conveyor belt without the possibility of being stretched by the perforation elements. The perforation is therefore precise since it is made on a substantially flat surface and the perforation element is such that, in the perforation position, not only does it pass through the film, but it also enters the conveyor belt through which it passes through the surface plane.

Ainsi, la surface plane pénétrable de la bande convoyeuse facilite la perforation du film qu'elle transporte et elle peut être pénétrée par n'importe quel élément de perforation, quelle que soit sa forme.Thus, the penetrable flat surface of the conveyor belt facilitates the perforation of the film it carries and it can be penetrated by any perforation element, regardless of its shape.

Le moulinet suivant l'invention est particulièrement avantageux en ce sens que son axe de rotation est disposé à distance de la surface plane de la bande convoyeuse. On se passe de l'utilisation de deux rouleaux contigus qui pincent le film et risquent de le déchirer pendant son déroulement. En outre, la disposition du moulinet à distance de la bande convoyeuse rend l'accès au film plus aisé, contrairement à l'état de la technique faisant appel à deux rouleaux contigus. Donc, en cas de maintenance ou de panne du dispositif, la disposition de chaque élément formant le dispositif de perforation suivant l'invention permet de faciliter l'accès au film.The reel according to the invention is particularly advantageous in that its axis of rotation is disposed at a distance from the flat surface of the conveyor belt. There is no need for two contiguous rollers that pinch the film and can tear it during its course. In addition, the arrangement of the reel away from the conveyor belt makes access to the film easier, unlike the state of the art using two adjacent rollers. Therefore, in the event of maintenance or breakdown of the device, the arrangement of each element forming the perforation device according to the invention makes it easier to access the film.

De plus, ladite au moins une structure de support du moulinet peut être munie d'au moins un élément de perforation qui peut être facilement substitué par un autre de façon à adapter la forme des perforations dans le film.In addition, said at least one support structure of the reel can be provided with at least one perforation element which can be easily substituted by another so as to adapt the shape of the perforations in the film.

Ainsi, il est manifeste que le dispositif de perforation suivant l'invention permet de réaliser des perforations précises, fiables et reproductibles avec une qualité assurée.Thus, it is clear that the perforating device according to the invention allows to achieve accurate perforations, reliable and reproducible with assured quality.

Au sens de la présente invention, il est entendu par l'expression « surface plane pénétrable » de la bande convoyeuse, une bande convoyeuse qui présente à sa surface une matière permettant d'être pénétrée par un élément de perforation suivant la présente invention. Ainsi, la matière en surface de la bande convoyeuse peut se présenter sous forme d'une brosse, de poils, d'un feutre, d'une mousse, de leur combinaison ou de tout autre matière pouvant être pénétrée et ce sans limiter la forme de l'élément de perforation.For the purposes of the present invention, the term "penetrable flat surface" of the conveyor belt is understood to mean a conveyor belt which has on its surface a material that can be penetrated by a perforation element according to the present invention. Thus, the surface material of the conveyor belt can be in the form of a brush, bristles, a felt, a foam, their combination or any other material that can be penetrated and without limiting the shape. of the perforation element.

Avantageusement, ladite bande convoyeuse présente sur ladite surface plane un premier vecteur vitesse prédéterminé et ledit au moins un élément de perforation présente, en position de perforation, un deuxième vecteur vitesse prédéterminé qui est identique audit premier vecteur vitesse prédéterminé.Advantageously, said conveyor belt has on said plane surface a first predetermined velocity vector and said at least one perforation element has, in perforation position, a second predetermined velocity vector which is identical to said first predetermined velocity vector.

Dans la cadre de la présente invention, il est entendu par « vecteur vitesse » un vecteur qui est défini par une valeur, un sens et une direction. Pratiquement, le « premier vecteur vitesse » se rapporte à la bande convoyeuse. Lorsque la bande convoyeuse est déplacée et reçoit le film à convoyer, le « premier vecteur vitesse » présente un sens et une direction correspondant au sens de défilement du film et de la bande convoyeuse. La vitesse prédéterminée de la bande convoyeuse définit l'intensité (la valeur) de ce « premier vecteur vitesse ». Ainsi, la bande convoyeuse se déplace avec le film à une certaine vitesse, dans un sens et une direction prédéfinie qui sont représentés par ce « premier vecteur vitesse ».In the context of the present invention, the term "velocity vector" is understood to mean a vector which is defined by a value, a direction and a direction. In practice, the "first speed vector" refers to the conveyor belt. When the conveyor belt is moved and receives the film to be conveyed, the "first speed vector" has a direction and a direction corresponding to the direction of travel of the film and the conveyor belt. The predetermined speed of the conveyor belt defines the intensity (the value) of this "first velocity vector". Thus, the conveyor belt moves with the film at a certain speed, in a direction and a predefined direction which are represented by this "first velocity vector".

L'élément de perforation présente de nombreux vecteurs vitesses car il tourne autour de l'axe de rotation du moulinet. Toutefois, le vecteur vitesse d'intérêt dans le cadre de la présente invention concerne le dénommé « deuxième vecteur vitesse » qui se rapporte à celui de l'élément de perforation en position de perforation. Le « deuxième vecteur vitesse » est dirigé et orienté dans le même sens que le « premier vecteur vitesse » de la bande convoyeuse. Ainsi, en position de perforation, l'élément de perforation atteint le film à la même vitesse que celui-ci, ce qui évite de devoir pincer et stopper le film lors de la perforation. Le « premier vecteur vitesse » selon l'invention est parallèle au « deuxième vecteur vitesse ».The perforation element has many velocity vectors because it rotates around the axis of rotation of the reel. However, the velocity vector of interest in the context of the present invention relates to the so-called "second velocity vector" which refers to that of the perforation element in the perforation position. The "second velocity vector" is directed and oriented in the same direction as the "first velocity vector" of the conveyor belt. Thus, in the perforation position, the perforation element reaches the film at the same speed as this, which avoids having to pinch and stop the film during perforation. The "first velocity vector" according to the invention is parallel to the "second velocity vector".

Cela a pour avantage que la perforation est réalisée sans devoir maintenir ou étirer le film lors de la perforation puisque l'élément de perforation atteint la surface du film devant être perforée à la même vitesse de déplacement que celui-ci, alors que la totalité du film est soutenue par la bande convoyeuse.This has the advantage that the perforation is performed without having to maintain or stretch the film during the perforation since the perforation element reaches the surface of the film to be perforated at the same speed of displacement as the latter, while the entire film is supported by the conveyor belt.

Dans une forme de réalisation particulière, ledit au moins un élément de perforation présente une surface sensiblement plane agencée pour être en contact avec la surface plane de la bande convoyeuse. Lors de la perforation du film, la surface de l'élément de perforation, la surface du film et la surface plane de la bande convoyeuse s'étendent ainsi sensiblement dans le même plan. Cela a pour conséquence que, après perforation, le au moins un élément de perforation supporté par la structure de support est retiré aisément du film en sortant aisément du plan de la surface plane de la bande convoyeuse lorsqu'il est entraîné en révolution autour de l'axe du moulinet. De cette façon, l'élément de perforation quitte ainsi le film et la surface plane de la bande convoyeuse pour adopter sa position de retrait sans risquer de déchirer le film qui peut continuer à défiler aisément.In a particular embodiment, said at least one perforation element has a substantially planar surface arranged to be in contact with the flat surface of the conveyor belt. During the perforation of the film, the surface of the perforation element, the surface of the film and the flat surface of the conveyor belt thus extend substantially in the same plane. This has the consequence that, after perforation, the at least one perforation element supported by the support structure is easily removed from the film easily out of the plane of the flat surface of the conveyor belt when it is driven in revolution around the axis of the reel. In this way, the piercing member thus leaves the film and the flat surface of the conveyor belt to adopt its withdrawal position without the risk of tearing the film which can continue to scroll easily.

De plus, l'avantage de ce mode de réalisation se situe au niveau du changement dudit au moins un élément de perforation qui est rendu aisé. En effet, chaque élément de perforation peut présenter une forme de découpe différente sur une surface sensiblement plane ce qui facilite le remplacement par d'autre formes de découpe qui présentent avantageusement aussi une surface plane. Le dispositif selon l'invention n'est donc pas limité à une seule forme de découpe.In addition, the advantage of this embodiment lies in the change of said at least one perforation element which is made easy. Indeed, each perforation element may have a different form of cutting on a substantially flat surface which facilitates replacement with other cutting shapes which advantageously also have a flat surface. The device according to the invention is not limited to a single form of cutting.

Selon un mode de réalisation préféré de la présente invention, ledit au moins un élément de perforation comprend une face frontale munie d'éléments coupant et une face dorsale agencée pour être reçue par ladite au moins une structure de support.According to a preferred embodiment of the present invention, said at least one perforation element comprises a face front end provided with cutting elements and a back face arranged to be received by said at least one support structure.

Avantageusement, ladite au moins une structure de support présente un axe de pivotement autour duquel tourne au moins un élément de perforation. De cette façon, les éléments de perforation suivant l'invention tourne de manière synchrone par rapport à l'axe de pivotement de la structure de support et l'axe de rotation du moulinet.Advantageously, said at least one support structure has a pivot axis around which at least one perforation element rotates. In this way, the perforation elements according to the invention rotate synchronously with respect to the pivot axis of the support structure and the axis of rotation of the reel.

Selon un mode de réalisation avantageux du dispositif selon l'invention, celui-ci comprend au moins un moulinet additionnel disposé en face d'une surface plane additionnelle de la bande convoyeuse, destinée elle aussi à recevoir le film. De cette façon, le dispositif peut par exemple comprendre une bande convoyeuse située entre deux moulinets pour réaliser les perforations sur le film déroulant en deux endroits successifs.According to an advantageous embodiment of the device according to the invention, it comprises at least one additional reel disposed opposite an additional flat surface of the conveyor belt, also intended to receive the film. In this way, the device may for example comprise a conveyor belt located between two reels for making perforations on the unwinding film in two successive locations.

De manière tout à fait avantageuse, le dispositif suivant l'invention comprend au moins une bande convoyeuse supplémentaire et sur celle-ci au moins une surface plane supplémentaire pour recevoir le film additionnel. De cette façon, le dispositif de perforation suivant l'invention peut par exemple comprendre un moulinet situé entre deux bandes convoyeuses pour réaliser les perforations sur le film déroulant en deux endroits successifs.Advantageously, the device according to the invention comprises at least one additional conveyor belt and on it at least one additional flat surface to receive the additional film. In this way, the perforation device according to the invention may for example comprise a reel located between two conveyor belts to perform the perforations on the unwinding film in two successive locations.

Préférentiellement, ladite bande convoyeuse peut être montée sur au moins deux cylindres agencés pour entrer en rotation. De cette façon, la bande convoyeuse est supportée par au moins deux cylindres, de préférence quatre cylindres, de façon à fournir une surface suffisamment plane de la bande convoyeuse, par exemple entre deux de ces cylindres.Preferably, said conveyor belt may be mounted on at least two cylinders arranged to rotate. In this way, the conveyor belt is supported by at least two cylinders, preferably four cylinders, so as to provide a sufficiently flat surface of the conveyor belt, for example between two of these cylinders.

De préférence, l'axe du moulinet présente une première et une deuxième extrémités munies chacune d'une paroi latérale et au moins une structure de support susdite s'étendant d'une paroi latérale à l'autre.Preferably, the reel axis has first and second ends each provided with a side wall and at least one aforesaid support structure extending from one side wall to the other.

Dans une forme de réalisation particulièrement avantageuse du dispositif selon l'invention, ledit dispositif comprend au moins un guide tel qu'un cylindre pour ajuster l'espacement entre chaque motif de perforation. Ce mode de réalisation sera préféré lorsque le dispositif de perforation selon l'invention comprend un moulinet situé entre deux bandes convoyeuses.In a particularly advantageous embodiment of the device according to the invention, said device comprises at least one guide such as a cylinder to adjust the spacing between each perforation pattern. This embodiment will be preferred when the perforation device according to the invention comprises a reel located between two conveyor belts.

De plus, dans une forme de réalisation particulière, la vitesse prédéterminée de la bande convoyeuse est comprise entre 20 et 400 mètres par minute (m/min), de préférence entre 100 et 350 m/min, plus préférentiellement entre 150 et 350 m/min, avantageusement entre 200 et 350 m/min.In addition, in a particular embodiment, the predetermined speed of the conveyor belt is between 20 and 400 meters per minute (m / min), preferably between 100 and 350 m / min, more preferably between 150 and 350 m / min. min, advantageously between 200 and 350 m / min.

Avantageusement, ledit au moins un élément de perforation présente une forme géométrique choisie dans le groupe constitué du demi-cercle, du cercle, de la partie d'un cercle tel que l'arc de cercle, du carré, d'une ligne droite, d'une ligne courbée, d'un rectangle, d'un triangle, ou de leurs combinaisons.Advantageously, said at least one perforation element has a geometric shape chosen from the group consisting of the semicircle, the circle, the part of a circle such as the arc of a circle, the square, of a straight line, a curved line, a rectangle, a triangle, or their combinations.

Ce mode de réalisation particulier présente un intérêt tout à fait avantageux pour le dispositif suivant l'invention car il répond aux besoins des utilisateurs désirant disposer d'un dispositif de perforation polyvalent. En effet, le au moins un élément de perforation peut être substitué à souhait afin d'obtenir la forme de perforation désirée. Par exemple, si l'utilisateur souhaite réaliser une perforation en forme de carré, il lui suffit d'utiliser un élément de perforation présentant une forme géométrique carrée fournie avec le dispositif, de le fixer sur la structure de support et de faire fonctionner le dispositif afin d'obtenir le motif sélectionné sur le film perforable. De plus, le remplacement d'un élément de perforation est rendu aisé par le dispositif suivant l'invention puisque, non seulement l'accès au film est garanti, mais l'accès à au moins un élément de perforation est aisé.This particular embodiment has a very advantageous advantage for the device according to the invention because it meets the needs of users who wish to have a versatile perforating device. Indeed, the at least one perforation element can be substituted as desired to obtain the desired perforation shape. For example, if the user wishes to perform a square-shaped perforation, it suffices to use a perforation element having a square geometric shape provided with the device, to fix it on the support structure and to operate the device to obtain the selected pattern on the pierceable film. In addition, the replacement of a perforation element is made easy by the device according to the invention since, not only is access to the film guaranteed, but access to at least one perforation element is easy.

D'autres formes de réalisation du dispositif de perforation suivant l'invention sont indiquées dans les revendications annexées.Other embodiments of the perforating device according to the invention are indicated in the appended claims.

La présente invention se rapporte également à une ligne d'impression comprenant le dispositif de perforations selon la présente invention.The present invention also relates to a printing line comprising the perforation device according to the present invention.

Le dispositif de perforation est tel qu'il peut être intégré à une ligne d'impression ce qui est particulièrement inattendu au vu des dispositif de perforation actuels qui ne peuvent assurer une perforation à la même vitesse que celle à laquelle le film déroule.The perforating device is such that it can be integrated into a printing line, which is particularly unexpected in view of current perforating devices which can not provide a perforation at the same speed as that at which the film unrolls.

D'autres formes de réalisation de la ligne d'impression suivant l'invention sont indiquées dans les revendications annexées.Other embodiments of the printing line according to the invention are indicated in the appended claims.

La présente invention a trait aussi à une fardeleuse qui comprend le dispositif de perforation suivant l'invention.The present invention also relates to a shrinkwrapper which comprises the perforation device according to the invention.

D'autres formes de réalisation de la fardeleuse suivant l'invention sont indiquées dans les revendications annexées.Other embodiments of the shrinkwrapper according to the invention are indicated in the appended claims.

D'autres caractéristiques, détails et avantages de l'invention ressortiront de la description donnée ci-après, à titre non limitatif et en faisant référence aux dessins annexés.

  • La figure 1 est une vue en perspective d'une forme de réalisation d'un dispositif de perforation suivant l'invention.
  • La figure 2 est une vue latérale du dispositif de perforation représenté à la figure 1.
  • La figure 3 est une illustration en perspective d'un exemple d'élément de perforation présentant des aiguilles coupantes en périphérie.
  • La figure 4 est une vue en perspective d'une variante de réalisation du dispositif selon la présente invention.
  • La figure 5 est une vue d'un moulinet avantageux du dispositif suivant l'invention lorsque les éléments de perforation sont en position de perforation.
  • La figure 6 est une représentation du moulinet de la figure 5 lorsque les élément de perforation sont en position de retrait.
Other features, details and advantages of the invention will become apparent from the description given below, without limitation and with reference to the accompanying drawings.
  • The figure 1 is a perspective view of an embodiment of a perforation device according to the invention.
  • The figure 2 is a side view of the perforating device shown in FIG. figure 1 .
  • The figure 3 is a perspective illustration of an example of a perforating element having peripheral cutting needles.
  • The figure 4 is a perspective view of an alternative embodiment of the device according to the present invention.
  • The figure 5 is a view of an advantageous reel of the device according to the invention when the perforation elements are in the perforation position.
  • The figure 6 is a representation of the reel of the figure 5 when the piercing elements are in the retracted position.

Sur les figures, les éléments identiques ou analogues portent les mêmes références.In the figures, identical or similar elements bear the same references.

Sur les figures 1 et 2 est illustré un dispositif de perforation dans lequel un film 1 déroulant est alimenté par deux moyens d'alimentation 2a, 2b vers une bande convoyeuse 4 qui présente une surface plane pénétrable 5. La bande convoyeuse 4 est montée sur 4 cylindres mais peut tout aussi bien être supportée par au moins 2 cylindres. Au moins l'un de ces cylindres est capable d'entraîner la bande 4 en mouvement d'une manière connue, non représentée, et à une vitesse prédéterminée. Le film 1 est reçu sur cette bande 4 et est convoyé par celle-ci à cette vitesse.On the figures 1 and 2 is illustrated a perforation device in which a film 1 drop is fed by two feed means 2a, 2b to a conveyor belt 4 which has a penetrable flat surface 5. The conveyor belt 4 is mounted on 4 cylinders but can just as well be supported by at least 2 cylinders. At least one of these cylinders is capable of driving the moving belt 4 in a known manner, not shown, and at a predetermined speed. The film 1 is received on this band 4 and is conveyed by it at this speed.

Comme illustré aux figures 1 et 2, quatre moulinets 6 et 6' sont situés de part et d'autre de la bande convoyeuse, deux moulinets 6 étant localisés au-dessus de la première surface plane 5 de la bande convoyeuse 4 et deux moulinets 6' étant disposés en dessous de la surface plane additionnelle 5' de la bande 4. Chaque moulinet 6 et 6' présente un axe de rotation 7 et 7' autour duquel tournent en révolution une première structure de support 8A, 8A' comprenant quatre éléments de perforation 3A, 3A' et une deuxième structure de support 8B, 8B' comprenant quatre éléments de perforation 3B, 3B'. L'axe de rotation 7 et 7' de chaque moulinet 6 et 6' est parallèle à la surface de la bande 4, et est donc disposé perpendiculairement au sens de défilement D du film 1, à distance de celui-ci.As illustrated in figures 1 and 2 , four reels 6 and 6 'are located on either side of the conveyor belt, two reels 6 being located above the first flat surface 5 of the conveyor belt 4 and two reels 6' being arranged below the additional flat surface 5 'of the strip 4. Each reel 6 and 6' has an axis of rotation 7 and 7 'around which revolve a first support structure 8A, 8A' comprising four perforation elements 3A, 3A 'and a second support structure 8B, 8B 'comprising four perforation elements 3B, 3B'. The axis of rotation 7 and 7 'of each reel 6 and 6' is parallel to the surface of the strip 4, and is therefore arranged perpendicularly to the running direction D of the film 1, at a distance therefrom.

On peut également remarquer que les axes de rotation 7 et 7' de chaque moulinet 6 et 6' présentent, dans cet exemple, une première extrémité et une deuxième extrémité munies chacune d'une paroi latérale 10. Chaque structure de support 8A, 8A', 8B, 8B' d'un moulinet 6 et 6' s'étend d'une paroi latérale à l'autre de l'axe de rotation 7 et 7'.It may also be noted that the axes of rotation 7 and 7 'of each reel 6 and 6' have, in this example, a first end and a second end each provided with a side wall 10. Each support structure 8A, 8A ' , 8B, 8B 'of a reel 6 and 6' extends from one side wall to the other of the axis of rotation 7 and 7 '.

Dans le mode de réalisation illustré aux figures 1 et 2, les moulinets 6 et 6' situés au-dessus ou en-dessous de la bande 4 sont reliés l'un à l'autre au moyen d'une paroi centrale qui permet de rigidifier la structure du moulinet. Ainsi, deux moulinets principaux 6 et 6', situés de part et d'autres de la bande convoyeuse 4, peuvent être formés par la connexion de deux moulinets 6, 6' au moyen d'une paroi centrale. De cette façon, chaque moulinet principale comprend ainsi à chacune de ses extrémités une paroi latérale et une paroi centrale en son centre.In the embodiment illustrated in figures 1 and 2 the reels 6 and 6 'situated above or below the band 4 are connected to each other by means of a central wall which makes it possible to stiffen the structure of the reel. Thus, two main reels 6 and 6 ', located on either side of the conveyor belt 4, can be formed by the connecting two reels 6, 6 'by means of a central wall. In this way, each main reel thus comprises at each of its ends a side wall and a central wall at its center.

Il n'est pas exclu que le dispositif selon l'invention présente de part et d'autre de la bande convoyeuse 4 quatre moulinets 6 et 6' et donc deux moulinets 6 au-dessus de la bande 4 et deux moulinets 6' en-dessous de la bande 4, chaque moulinet comprenant à leurs extrémités des parois latérales. Les moulinets 6 et 6' sont donc de préférence indépendant les uns des autres.It is not excluded that the device according to the invention has on both sides of the conveyor belt 4 four reels 6 and 6 'and therefore two reels 6 above the band 4 and two reels 6' below the band 4, each reel comprising at their ends side walls. The reels 6 and 6 'are preferably independent of each other.

En outre et selon un mode préférentiel de la présente invention, le dispositif peut également comprendre deux moulinet 6 et 6' situés de part et d'autre de la bande convoyeuse 4, l'un au-dessus de la première surface plane 5 de la bande convoyeuse 4 et, l'autre en dessous de la surface plane additionnelle 5' de la bande 4.In addition and according to a preferred embodiment of the present invention, the device may also comprise two reels 6 and 6 'located on either side of the conveyor belt 4, one above the first flat surface 5 of the conveyor belt 4 and the other below the additional planar surface 5 'of the strip 4.

Chaque élément de perforation 3A, 3B, 3A'et 3B' illustré aux figures 1, 2 présente une face frontale munie d'éléments coupant, comme des aiguilles ou une lame, et une face dorsale sensiblement plane. En position de perforation P, la face frontale de chaque élément de perforation 3A, 3B, 3A' et 3B', de préférence les éléments coupants de chaque élément de perforation 3A, 3B, 3A' et 3B', peut ou peuvent reposer sur la surface plane pénétrable 5 de la bande convoyeuse 4. De cette façon, lorsque le film 1 est convoyé par la bande 4, celui-ci est maintenu entre les éléments de perforation 3A, 3B, 3A' et 3B', en position de perforation P, et la surface plane 5, 5' sur laquelle repose le film 1 convoyé par la bande 4.Each perforation element 3A, 3B, 3A 'and 3B' illustrated in FIGS. figures 1 , 2 has a front face provided with cutting elements, such as needles or a blade, and a substantially flat back face. In the perforation position P, the front face of each perforation element 3A, 3B, 3A 'and 3B', preferably the cutting elements of each perforating element 3A, 3B, 3A 'and 3B', can or can rest on the In this way, when the film 1 is conveyed by the strip 4, the strip 4 is held between the perforating elements 3A, 3B, 3A 'and 3B', in the perforation position P. , and the flat surface 5, 5 'on which the film 1 conveyed by the strip 4 rests.

Selon un mode particulier, les éléments de perforation 3A de de la première structure de support 8A du moulinet 6 situé au-dessus de la bande convoyeuse 4 perforent le film 1, lorsqu'ils sont en position de perforation P, alors que les éléments de perforation 3B de la deuxième structure de support 8B du moulinet 6 ne sont pas prévus pour perforer le film dans cette configuration préférée. Ainsi, les éléments de perforation 3B' du moulinet 6', situé en-dessous de la bande convoyeuse 4, sont ceux prévus pour perforer le film alors que les éléments de perforation 3A' ne sont pas agencés pour perforer ledit film 1.According to one particular embodiment, the perforation elements 3A of the first support structure 8A of the reel 6 situated above the conveyor belt 4 perforate the film 1, when they are in the perforation position P, whereas the elements of FIG. perforation 3B of the second support structure 8B of the reel 6 are not provided to perforate the film in this preferred configuration. Thus, the perforation elements 3B 'of the reel 6', located below the conveyor belt 4, are those provided for perforating the film while the perforation elements 3A 'are not arranged to perforate said film 1.

De manière tout à fait avantageuse, lorsque les quatre éléments de perforation 3A de la première structure de support 8A du moulinet 6 sont en position de perforation P, les quatre éléments de perforation 3B de la deuxième structure de support 8B, située à l'opposé de la première structure de support 8A, sont en position de retrait R. Ainsi, les quatre éléments de perforation 3A de la première structure de support 8A perforent le film 1 pour ensuite entrer en rotation de 360 ° et le perforer à nouveau. Les quatre éléments de perforation 3B de la deuxième structure de support 8B jouent, dans ce mode particulier, simplement le rôle de contrepoids pour les éléments de perforations 3A de la première structure de support 8A. La perforation fournie à l'aide de ce mode de réalisation particulier est alors encore plus précise.Most advantageously, when the four perforation elements 3A of the first support structure 8A of the reel 6 are in the perforation position P, the four perforation elements 3B of the second support structure 8B, located opposite of the first support structure 8A, are in the retracted position R. Thus, the four perforation elements 3A of the first support structure 8A perforate the film 1 to then rotate 360 ° and perforate it again. The four perforation elements 3B of the second support structure 8B play, in this particular mode, simply the counterweight role for the perforation elements 3A of the first support structure 8A. The perforation provided with the aid of this particular embodiment is then even more precise.

Dans l'agencement particulier précité, les faces frontales A des éléments de perforation 3A de la première structure de support 8A du moulinet 6 sont dirigées vers le film 1. A l'opposé des faces frontales A des éléments de perforation 3A de la première structure de support 8A, les faces dorsales B des éléments de perforation 3B de la deuxième structure de support 8B sont dirigées vers le film 1 pour éviter que ces éléments de perforation 3B n'entrent en contact avec le film 1. De manière avantageuse, les éléments de perforation 3B de la deuxième structure de support 8B peuvent être utiles en cas de remplacement des éléments de perforation 3A de la première structure de support 8A. Ceci est également applicable au moulinet 6' disposé en-dessous de la bande convoyeuse 4.In the particular arrangement mentioned above, the front faces A of the perforation elements 3A of the first support structure 8A of the reel 6 are directed towards the film 1. Opposite the end faces A of the perforation elements 3A of the first structure 8A, the dorsal faces B of the perforation elements 3B of the second support structure 8B are directed towards the film 1 to prevent these perforation elements 3B from coming into contact with the film 1. Advantageously, the elements perforation 3B of the second support structure 8B may be useful in case of replacement of the perforation elements 3A of the first support structure 8A. This is also applicable to the reel 6 'disposed below the conveyor belt 4.

Il est bien entendu que les éléments de perforation 3B de la deuxième structure de support 8B peuvent être substitués par un autre élément de façon à pouvoir contrecarrer le poids de la première structure de support 8A qui comprend les éléments de perforation 3A. Cela vaut également pour le moulinet 6' situé en-dessous de la bande convoyeuse 4.It is understood that the perforation elements 3B of the second support structure 8B may be substituted by another element so as to be able to counteract the weight of the first support structure 8A which comprises the perforation elements 3A. This costs also for the reel 6 'located below the conveyor belt 4.

De plus, il pourrait tout aussi bien être envisagé que tous les éléments de perforation 3A, 3B, 3A' et 3B'sont agencés pour perforer le film 1.In addition, it could equally well be envisaged that all the perforation elements 3A, 3B, 3A 'and 3B' are arranged to perforate the film 1.

Dans l'exemple illustré aux figures 1 et 2, l'élément de perforation présente un motif en forme de ¾ de cercle (figure 3). Il est bien entendu que les formes de perforations peuvent variées et par exemple présenter une autre forme telle qu'une forme circulaire, rectiligne, courbée, rectangulaire, carré, triangulaire ou tout autres formes géométriques.In the example shown in figures 1 and 2 , the perforation element has a circle-shaped pattern ( figure 3 ). It is understood that the forms of perforations can be varied and for example have another shape such as circular, rectilinear, curved, rectangular, square, triangular or any other geometric shapes.

Il est également possible de remplacer la forme de l'élément de perforation 3A, 3B, 3A' et 3B'par une autre pour par exemple modifier la forme de la prédécoupe ou pour simplement remplacer un élément de perforation 3 usagé.It is also possible to replace the shape of the perforating element 3A, 3B, 3A 'and 3B' by another for example to change the shape of the precut or simply to replace a piercing member 3 used.

Ainsi, après perforation, le film 1 présente une première rangée de perforations qui comprend huit % de cercle et une deuxième rangées comprenant huit ¾ de cercle.Thus, after perforation, the film 1 has a first row of perforations which comprises eight percent of a circle and a second row comprising eight ¾ of a circle.

Comme on peut le voir aux figures 1 et 2, des moyens de réception 12 sont présents sous forme de cylindre. De cette façon, ces derniers réceptionnent le film 1 perforé afin de le guider vers la surface plane supplémentaire 5' de la bande convoyeuse 4.As can be seen at figures 1 and 2 , receiving means 12 are present in the form of a cylinder. In this way, the latter receive the perforated film 1 in order to guide it to the additional flat surface 5 'of the conveyor belt 4.

Dans le mode de réalisation décrit aux figures 1 et 2, le film 1 peut être déroulé à une vitesse comprise entre 20 et 400 mètres par minute (m/min), de préférence entre 100 et 350 m/min, plus préférentiellement entre 150 et 350 m/min, avantageusement entre 200 et 350 m/min.In the embodiment described in figures 1 and 2 the film 1 can be unwound at a speed of between 20 and 400 meters per minute (m / min), preferably between 100 and 350 m / min, more preferably between 150 and 350 m / min, advantageously between 200 and 350 m / min.

En fonctionnement, le dispositif de perforation est alimenté d'un film 1 perforable au moyen des cylindres rotatifs 2a, 2b qui l'amènent jusqu'à la première surface plane 5 de la bande convoyeuse 4. La première surface plane 5 de la bande convoyeuse 4 présente un premier vecteur vitesse V1. Le sens et la direction du premier vecteur V1 sont ceux correspondant au sens de défilement du film 1, lorsqu'il est transporté par cette première surface plane 5 de la bande 4. Enfin, l'intensité du premier vecteur V1 est égale à celle de la vitesse de déplacement prédéterminée de la bande convoyeuse 4 et donc à celle du film 1 déroulant.In operation, the perforation device is fed with a perforable film 1 by means of the rotary cylinders 2a, 2b which bring it to the first flat surface 5 of the conveyor belt 4. The first flat surface 5 of the conveyor belt 4 shows a first velocity vector V 1 . The direction and direction of the first vector V 1 are those corresponding to the direction of travel of the film 1, when it is transported by this first flat surface 5 of the strip 4. Finally, the intensity of the first vector V 1 is equal to that of the predetermined speed of displacement of the conveyor belt 4 and therefore to that of the film 1 drop down.

Lorsque le film 1 atteint la première surface plane 5 de la bande 4, les éléments de perforation 3A sont en position de perforation P et perforent celui-ci en étant perpendiculaire au sens de défilement D du film 1. Donc, en position de perforation P, les éléments de perforation 3A présentent un deuxième vecteur vitesse V2 identique au premier vecteur vitesse V1 de la première surface plane pénétrable 5 de la bande 4.When the film 1 reaches the first flat surface 5 of the strip 4, the perforation elements 3A are in the perforation position P and perforate the latter being perpendicular to the running direction D of the film 1. Thus, in the perforation position P , the perforation elements 3A have a second velocity vector V 2 identical to the first velocity vector V 1 of the first penetrable flat surface 5 of the strip 4.

Les figures 1 et 2 permettent de mettre en lumière les deux positions des éléments de perforation 3A, 3B, 3A' et 3B' à savoir la position de perforation P et la position de retrait R.The figures 1 and 2 allow to highlight the two positions of the perforation elements 3A, 3B, 3A 'and 3B' namely the perforation position P and the retracted position R.

Par exemple, lorsque les éléments de perforations 3A et 3B sont mis en rotation par rapport à la première surface plane 4 de la bande 5, ceux-ci s'éloignent puis se rapprochent successivement de la surface 5 de la bande 4 qui convoie le film 1. Ainsi, lorsque les éléments de perforation 3B, sont en position de retrait R par rapport au film 1 déroulant, ceux-ci sont éloignés par rapport à la première surface plane 5 et la perforation du film 1 n'a pas lieu. A l'opposé, lorsque les éléments de perforation 3A atteignent la première surface plane 5 de la bande 4, ceux-ci adoptent une position de perforation P qui leur permet de perforer le film 1.For example, when the perforation elements 3A and 3B are rotated relative to the first flat surface 4 of the band 5, they move away and then move successively to the surface 5 of the band 4 which conveys the film Thus, when the perforating elements 3B are in the retracted position R with respect to the unwinding film 1, they are moved away from the first flat surface 5 and the perforation of the film 1 does not take place. In contrast, when the perforation elements 3A reach the first flat surface 5 of the strip 4, they adopt a perforation position P which allows them to perforate the film 1.

En fin de perforation, les éléments de perforation 3A ou 3B adoptent leur position de retrait R et le film 1 peut ainsi poursuivre son défilement jusqu'au deux cylindres de réception 12 qui le guident vers la deuxième surface plane 5' de la bande convoyeuse 4 où la deuxième ligne de perforation est réalisée. Lors de la deuxième perforation, les éléments de perforation 3B' sont parallèles au film et le perforent en pénétrant la deuxième surface plane 5' de la bande convoyeuse 4 comme décrit ci-dessus pour la réalisation de la première ligne de perforations.At the end of the perforation, the perforation elements 3A or 3B adopt their retracted position R and the film 1 can continue to travel to the two receiving cylinders 12 which guide it to the second flat surface 5 'of the conveyor belt 4 where the second perforation line is made. During the second perforation, the perforation elements 3B 'are parallel to the film and perforate it by penetrating the second flat surface 5' of the conveyor belt 4 as described above for producing the first line of perforations.

En outre, lorsque les éléments de perforation 3B' du moulinets 6', situé en dessous de la bande convoyeuse 4, perforent le film, ils présentent également un deuxième vecteur vitesse V2 identique au premier vecteur vitesse V1. Cette fois-ci, le sens du deuxième vecteur V2 des éléments de perforation 3B' de la deuxième structure de support 8B' est opposé à celui des éléments de perforation 3A de la première structure de support 8A du moulinet 6 localisé au-dessus de la bande convoyeuse 4.In addition, when the perforation elements 3B 'of the reels 6', located below the conveyor belt 4, perforate the film, they also have a second velocity vector V 2 identical to the first velocity vector V 1 . This time, the direction of the second vector V 2 of the perforation elements 3B 'of the second support structure 8B' is opposite to that of the perforation elements 3A of the first support structure 8A of the reel 6 located above the conveyor belt 4.

Cela a pour avantage de pouvoir intégrer le dispositif de perforation suivant l'invention dans une ligne d'impression où il est nécessaire de pouvoir perforer le film 1 en maintenant une vitesse prédéterminée sans devoir stopper la ligne d'impression.This has the advantage of being able to integrate the perforation device according to the invention in a printing line where it is necessary to be able to perforate the film 1 while maintaining a predetermined speed without having to stop the printing line.

Ainsi et comme illustré aux figures 1 et 2, à chaque perforation, la bande convoyeuse 4 sert de support aux éléments de perforation 3A, 3B, 3A' et 3B' qui peuvent aisément perforer le film de manière successive en traversant la première surface 5 plane puis la deuxième surface plane (additionnelle) 5' de la bande convoyeuse 4 tout en maintenant une vitesse constante de défilement du film.So and as illustrated in figures 1 and 2 at each perforation, the conveyor belt 4 serves as support for the perforating elements 3A, 3B, 3A 'and 3B' which can easily perforate the film successively through the first planar surface and then the second (additional) planar surface 5 of the conveyor belt 4 while maintaining a constant speed of scrolling of the film.

Le film 1 ainsi obtenu peut être utilisé pour emballer des bouteilles, des cannettes ou tout autre conteneur. Une fois emballés, l'extraction d'une bouteille ou d'une cannette est rendue aisée grâce aux perforations présentent sur le film qui se situe en regard des bouteilles ou des cannettes. Ainsi, le retrait d'une bouteille ou d'une canette est réalisé sans devoir nécessairement déchirer l'ensemble du film 1 qui maintient suffisamment les bouteilles ou canettes restant dans l'emballage. Le film 1 utilisé dans le dispositif suivant l'invention peut être de toute nature et fonction. Toutefois, un film 1 thermorétractable d'emballage est préféré.The resulting film 1 can be used to package bottles, cans or other containers. Once packaged, the extraction of a bottle or a can is made easy thanks to the perforations on the film that is next to the bottles or cans. Thus, the withdrawal of a bottle or a can is achieved without necessarily tearing the entire film 1 which sufficiently holds the bottles or cans remaining in the package. The film 1 used in the device according to the invention can be of any nature and function. However, a heat-shrinkable packaging film 1 is preferred.

La figure 3 représente un élément de perforation 3 qui peut être positionné sur la structure de support 8, 8', 8A, 8B, 8A' et 8B' du dispositif de perforation suivant l'invention.The figure 3 represents a perforating element 3 which can be positioned on the support structure 8, 8 ', 8A, 8B, 8A' and 8B 'of the perforating device according to the invention.

De manière avantageuse, la structure de support 8A, 8B, 8A' et 8B' du dispositif peut contenir une zone d'accueil sur laquelle se fixe l'élément de perforation 3. L'élément de perforation 3 présente une surface sensiblement plane qui est munie de trois orifices qui permettent de le fixer à la structure de support 8A, 8B, 8A' et 8B' du dispositif de perforation suivant l'invention. Il est bien entendu que l'élément de perforation 3 peut tout simplement être clipsé sur la structure de support 8A, 8B, 8A' et 8B' pour faciliter son remplacement. Ainsi, la structure de support 8A, 8B, 8A' et 8B' peut comprendre des moyens d'accueil pour les éléments de perforation 3. Par exemple, la structure de support 8A, 8B, 8A' et 8B' peut comprendre des rainures, des stries ou des gorges dans lesquelles peuvent coulisser l'élément de perforation 3, ce qui facilite le remplacement de l'élément de perforation 3.Advantageously, the support structure 8A, 8B, 8A 'and 8B' of the device may contain a reception zone on which the perforation element 3 is fixed. The perforation element 3 has a substantially flat surface which is provided with three holes which allow to fix it to the support structure 8A, 8B, 8A 'and 8B' of the perforating device according to the invention. It is understood that the perforation element 3 can simply be clipped onto the support structure 8A, 8B, 8A 'and 8B' to facilitate its replacement. Thus, the support structure 8A, 8B, 8A 'and 8B' may comprise receiving means for the perforation elements 3. For example, the support structure 8A, 8B, 8A 'and 8B' may comprise grooves, grooves or grooves in which the perforating element 3 can slide, which facilitates the replacement of the perforating element 3.

De plus et comme il apparaît à la figure 3, l'élément de perforation 3 comprend, en périphérie, des aiguilles coupantes qui garnissent une partie de la surface périphérique. De cette façon, il est possible de former un motif en forme de ¾ de cercle à l'aide d'un tel outil de perforation.Moreover and as it appears in the figure 3 , the perforation element 3 comprises, peripherally, cutting needles which cover a portion of the peripheral surface. In this way, it is possible to form a circle-shaped pattern using such a perforation tool.

La figure 4 représente un mode de réalisation préféré du dispositif selon la présente invention et illustre tous les éléments décrits aux figures 1 et 2. Toutefois, l'agencement des pièces est différent en ce que le dispositif comprend un moulinet 6 situé entre une première et une deuxième bandes convoyeuses 4 4'. La première bande convoyeuse 4' est située au-dessus du moulinet 6 et donc sa première surface plane 5' est agencée pour recevoir le film 1 déroulant. La deuxième bande convoyeuse 4 est située en dessous du moulinet 6 et sa première surface plane 5 est également agencée pour recevoir et convoyer le film 1 déroulant.The figure 4 represents a preferred embodiment of the device according to the present invention and illustrates all the elements described in figures 1 and 2 . However, the arrangement of the parts is different in that the device comprises a reel 6 located between a first and a second conveyor belt 4 4 '. The first conveyor belt 4 'is located above the reel 6 and therefore its first planar surface 5' is arranged to receive the film 1 unwinding. The second conveyor belt 4 is located below the reel 6 and its first flat surface 5 is also arranged to receive and convey the film 1 unwinding.

Pratiquement, l'amenée du film 1 dans le dispositif est réalisée au moyen de deux cylindres rotatifs d'alimentation 2a, 2b. Le film 1 est ainsi reçu par la première surface plane 5' de la première bande convoyeuse 4'. Le moulinet 6 comprend deux structures de support 8 qui comprennent respectivement huit éléments de perforation 3 (non illustrés). Ainsi, lorsque le film 1 est reçu sur la première surface plane 5' pénétrable de la première bande convoyeuse 4', celui-ci est perforé par les éléments de perforation 3 qui se situent, en position de perforation, en dessous de la première bande convoyeuse 4'. Le film 1 perforé est amené jusqu'aux deux cylindres de réception 12 qui l'orientent vers la première surface plane 5 de la deuxième bande convoyeuse 4, située en dessous du moulinet 6. A nouveau, l'opération de perforation recommence mais cette fois-ci, les éléments de perforation 3 sont en position de perforation de telle façon qu'ils perforent le film 1 en étant situé juste au-dessus de la deuxième bande convoyeuse 4.In practice, the feeding of the film 1 into the device is carried out by means of two rotating feed rollers 2a, 2b. The film 1 is thus received by the first flat surface 5 'of the first conveyor belt 4'. The reel 6 comprises two support structures 8 which comprise respectively eight perforation elements 3 (not shown). Thus, when the film 1 is received on the first planar 5 'penetrable surface of the first conveyor belt 4', it is perforated by the perforation elements 3 which are, in perforation position, below the first band conveyor 4 '. The perforated film 1 is fed to the two receiving cylinders 12 which direct it towards the first flat surface 5 of the second conveyor belt 4, situated below the reel 6. Again, the perforation operation starts again, but this time here, the perforation elements 3 are in perforation position so that they perforate the film 1 being located just above the second conveyor belt 4.

Enfin, en sortie de perforation, le film 1 perforé est reçu et redirigé par deux cylindres de réception 2c, 2d qui réceptionnent le film 1. Ainsi, le film 1 présente une série de motifs en forme de % de cercles.Finally, at the perforation outlet, the perforated film 1 is received and redirected by two receiving cylinders 2c, 2d which receive the film 1. Thus, the film 1 has a series of patterns in the form of% circles.

Chaque élément de perforation 3 présente la forme d'un ¾ de cercle. Il est possible de remplacer la forme de l'élément de perforation 3 par un autre pour par exemple modifier la forme de la prédécoupe ou pour simplement remplacer un élément de perforation 3 usagé.Each perforation element 3 has the shape of a circle ¾. It is possible to replace the shape of the perforation element 3 with another for example to change the shape of the precut or simply to replace a piercing member 3 used.

Ainsi, à la fin des perforations, le film 1 présente une première et une deuxième rangée de perforations où chaque rangée comprend huit ¾ de cercles. Chaque élément de perforation 3 présente la forme d'un % de cercle.Thus, at the end of the perforations, the film 1 has a first and a second row of perforations where each row comprises eight ¾ circles. Each perforation element 3 has the shape of a% circle.

Le film 1 ainsi obtenu peut être utilisé pour emballer des bouteilles, des cannettes ou tout autre conteneur.The resulting film 1 can be used to package bottles, cans or other containers.

Ce mode de réalisation est particulièrement avantageux car il nécessite simplement la mise en place d'un seul moulinet 6 disposé entre deux bandes convoyeuses 4 pour perforer le film 1 déroulant.This embodiment is particularly advantageous because it simply requires the establishment of a single reel 6 disposed between two conveyor belts 4 to perforate the film 1 drop.

Ce mode préféré facilite encore l'intégration du dispositif de perforation suivant l'invention à une ligne d'impression qui nécessite un déroulement continu du film 1 à des vitesse relativement élevées.This preferred mode further facilitates the integration of the perforating device according to the invention with a printing line which requires a continuous unwinding of the film 1 at relatively high speeds.

Les figures 5 et 6 illustrent un moulinet 6 avantageux du dispositif de perforation suivant l'invention qui comprend une première structure de support 8 et une deuxième structure de support 8', lesquelles présentent un axe de pivotement AA. Chaque structure de support 8 et 8' comprend des éléments de perforation 3 et 3' qui sont agencés pour tourner autour de l'axe de pivotement AA de la structure de support 8 et 8' correspondante. Le moulinet 6 présente un axe de rotation 7 autour duquel tournent également les éléments de perforations 3 et 3' qui reposent sur les structures de support 8 et 8'.The figures 5 and 6 illustrate an advantageous reel 6 of the perforating device according to the invention which comprises a first support structure 8 and a second support structure 8 ', which have a pivot axis AA. Each support structure 8 and 8 'comprises perforating elements 3 and 3' which are arranged to rotate about the pivot axis AA of the corresponding support structure 8 and 8 '. The reel 6 has an axis of rotation 7 around which also rotate the perforation elements 3 and 3 'which rest on the support structures 8 and 8'.

L'axe de rotation 7 et les axes de pivotement AA des structures de support 8 et 8' sont connectés l'un à l'autres au moyen de trois courroies 13 telles que représentées aux figures 5 et 6. Toutefois, le nombre de courroie utilisé peut être d'au moins 2.The axis of rotation 7 and the pivot axes AA of the support structures 8 and 8 'are connected to one another by means of three belts 13 as represented in FIGS. figures 5 and 6 . However, the number of belts used can be at least 2.

Ainsi, en l'espèce, la première courroie 13A connecte l'axe de pivotement AA de la première structure de support 8 à une poulie fixe , de préférence concentrique par rapport à l'axe de rotation 7 du moulinet 6. Les deuxième (13B) et troisième courroies 13C relient l'axe de pivotement AA de la deuxième structure de support 8' à la poulie fixe, de préférence concentrique par rapport à l'axe de rotation 7 du moulinet 6.Thus, in this case, the first belt 13A connects the pivot axis AA of the first support structure 8 to a fixed pulley, preferably concentric with respect to the axis of rotation 7 of the reel 6. The second (13B ) and third belts 13C connect the pivot axis AA of the second support structure 8 'to the fixed pulley, preferably concentric with respect to the axis of rotation 7 of the reel 6.

Comme illustré" aux figures 5 et 6, chaque élément de perforation 3 et 3' présente une face frontale A munie d'un élément coupant comme une lame et une face dorsale B prévue pour être fixée sur la structure de support 8 et 8'.As illustrated "to figures 5 and 6 each perforation element 3 and 3 'has a front face A provided with a cutting element such as a blade and a back face B intended to be fixed on the support structure 8 and 8'.

Le moulinet 6 est mis en rotation au moyen d'au moins un moteur (non illustré) qui entraîne l'axe de rotation 7 du moulinet 6.The reel 6 is rotated by means of at least one motor (not shown) which drives the axis of rotation 7 of the reel 6.

A la figure 5, les éléments de perforations 3 de la première structure de support 8 sont en position de perforation P. A ce moment-là, Les faces frontales A des éléments de perforations 3 sont dirigées vers le film 1 (non illustré) pour le perforer comme expliqué dans les figures précédentes. Au même moment, les éléments de perforation 3' de la deuxième structure de support 8' se situent à l'opposé de la première structure de support et leur face frontale est située dans le sens opposé à celui des faces frontales des éléments de perforation 3 de la première structure de support 8.To the figure 5 , the perforation elements 3 of the first support structure 8 are in the perforation position P. At this time, the front faces A of the perforation elements 3 are directed towards the film 1 (not shown) to perforate it as explained in the previous figures. At the same time, the perforation elements 3 'of the second support structure 8' are opposite to the first support structure and their front face is located in the opposite direction to that of the end faces of the perforation elements 3 of the first support structure 8.

Lorsque les éléments de perforations 3 et 3' des première et deuxième structures de support 8 et 8' continuent à tourner, chaque élément de perforation 3, 3' tournent sur lui-même et par rapport à leur axe de pivotement AA. De cette façon, la rotation des éléments de perforation 3, 3' est réalisée de manière synchrone tel qu'une rotation satellite.When the perforation elements 3 and 3 'of the first and second support structures 8 and 8' continue to rotate, each perforation element 3, 3 'rotates on itself and with respect to their pivot axis AA. In this way, the rotation of the perforation elements 3, 3 'is performed synchronously such as a satellite rotation.

Dans ce mode avantageux du dispositif selon l'invention, les éléments de perforation 3, 3' réalisent une double rotation, l'une par rapport à l'axe de pivotement de leur structure de support 8, 8' et l'autre par rapport à l'axe de rotation 7 du moulinet 6.In this advantageous embodiment of the device according to the invention, the perforation elements 3, 3 'perform a double rotation, one with respect to the pivot axis of their support structure 8, 8' and the other relative to to the axis of rotation 7 of the reel 6.

La figure 6 illustre les éléments de perforation 3, 3' de la figure 5 après une rotation de 180 ° ce qui correspond à une position de retrait R. Dans ce mode de réalisation, on peut apercevoir que les faces frontales A des éléments de perforation 3, 3' se font faces. Ainsi, les éléments de perforation 3' de la deuxième structure de support 8' ne peuvent pas perforer le film 1(non illustré) lorsqu'il arrive à sa hauteur vu que leur face dorsale fait face au film 1.The figure 6 illustrates the perforation elements 3, 3 'of the figure 5 after a rotation of 180 ° which corresponds to a retracted position R. In this embodiment, it can be seen that the front faces A perforating elements 3, 3 'are facing. Thus, the perforation elements 3 'of the second support structure 8' can not perforate the film 1 (not shown) when it reaches its height as their dorsal face faces the film 1.

A nouveau, lors d'une nouvelle rotation de 180° du moulinet 6, les éléments de perforation 3, 3' entrent en rotation synchrone de telle façon que les éléments de perforation 3 de la première structure de support 8 atteignent le film 1 (non illustré) pour le perforer au moyen d'éléments coupant comme des lames tranchantes.Again, when the reel 6 is rotated 180 ° again, the perforating elements 3, 3 'come into synchronous rotation so that the perforation elements 3 of the first support structure 8 reach the film 1 (no illustrated) to perforate it by means of cutting elements such as cutting blades.

Ainsi, ce mode de réalisation particulièrement avantageux peut être intégré dans le dispositif de perforation suivant l'invention pour augmenter la précision de découpe.Thus, this particularly advantageous embodiment can be integrated in the perforation device according to the invention to increase the precision of cutting.

De manière avantageuse, le moulinet repris aux figures 5 et 6 sera préférentiellement intégré au dispositif de perforation illustré aux figures 1 et 2.Advantageously, the reel taken over figures 5 and 6 will preferably be integrated into the perforation device illustrated in figures 1 and 2 .

Il est bien entendu que la présente invention n'est en aucune façon limitée aux formes de réalisations décrites ci-dessus et que bien des modifications peuvent y être apportées sans sortir du cadre des revendications annexées.It is understood that the present invention is in no way limited to the embodiments described above and that many modifications can be made without departing from the scope of the appended claims.

Dans le cadre de la présente invention, le dispositif de perforation suivant l'invention peut comprendre plusieurs moulinets 6 et plusieurs bandes convoyeuses 4.In the context of the present invention, the perforation device according to the invention may comprise several reels 6 and several conveyor belts 4.

Une bande convoyeuse 4 et 4' selon l'invention peut avantageusement être supportée par au moins deux cylindres ou tout autre élément qui permettent de fournir une surface sensiblement plane 5 et 5' de la bande convoyeuse 4 et 4'.A conveying belt 4 and 4 'according to the invention may advantageously be supported by at least two cylinders or any other element which make it possible to provide a substantially flat surface 5 and 5' of the conveyor belt 4 and 4 '.

De manière avantageuse, le dispositif de perforation peut comprendre au moins un guide 12 tel qu'un cylindre rotatif pour ajuster l'espacement entre chaque motif de perforation. Ainsi, la position du guide permet de contrôler la distance entre chaque motif de perforation.Advantageously, the perforating device may comprise at least one guide 12 such as a rotating cylinder to adjust the spacing between each perforation pattern. Thus, the position of the guide makes it possible to control the distance between each perforation pattern.

De préférence, le dispositif selon la présente invention comprend au moins 1 moulinet, de préférence 2 moulinets, plus préférentiellement quatre moulinets. Lorsque le dispositif selon la présente invention comprend quatre moulinets, deux moulinets sont avantageusement disposés de part et d'autre d'une bande convoyeuse et les deux moulinets sont de préférence reliés l'un à l'autre à l'une de leur extrémité au moyen d'une paroi centrale qui permet de rigidifier la structure obtenue.Preferably, the device according to the present invention comprises at least 1 reel, preferably 2 reels, more preferably four reels. When the device according to the present invention comprises four reels, two reels are advantageously arranged on either side of a conveyor belt and the two reels are preferably connected to one another at one of their end at means of a central wall which makes it possible to stiffen the structure obtained.

Il est bien entendu que le dispositif selon l'invention peut faire appel à au moins un moteur ou tout moyen équivalent pour faire fonctionner les éléments du dispositif.It is understood that the device according to the invention can use at least one motor or equivalent means to operate the elements of the device.

Claims (14)

  1. A device for perforating a roll-off film (1) comprising:
    - supply means (2a, 2b) for supplying the roll-off film (1),
    - at least one perforating element (3, 3', 3A, 3B, 3A', 3B') that has a perforating position (P) of said roll-off film (1) and a withdrawn position (R), and
    - receiving means (2c, 2d) for receiving said supplied perforated film (1),
    characterized in that it further comprises:
    - a conveyor belt (4) having a planar surface (5) that can be penetrated by at least one of the aforementioned perforating elements (3, 3', 3A, 3B, 3A', 3B'), having a predetermined movement speed and being arranged to receive the roll-off film (1) on the aforementioned surface and to convey it thereon at said predetermined speed in a predetermined direction,
    - a reel (6) having a rotation axis (7) positioned parallel to said planar surface (5), at a distance therefrom and perpendicular to said predetermined movement direction of said film (1) on said planar surface (5) of the conveyor belt (4) and around which at least one support structure (8, 8', 8A, 8B, 8A', 8B') provided with at least one aforementioned perforating element (3, 3', 3A, 3B, 3A', 3B') is driven in revolution, and
    - in that, in said perforating position (P) of the roll-off film (1), said at least one perforating element (3, 3', 3A, 3B, 3A', 3B') perforates the film (1) and at least partially penetrates through the planar surface (5) of said conveyor belt (4).
  2. The perforating device according to claim 1, wherein said conveyor belt (4) has a first predetermined speed vector (v1) on said planar surface (5) and wherein said at least one perforating element (3, 3', 3A, 3B, 3A', 3B') has, in the perforating position (P), a second predetermined speed vector (v2) that is identical to said first predetermined speed vector (v1).
  3. The perforating device according to claim 1 or 2, wherein said at least one perforating element (3, 3', 3A, 3B, 3A', 3B') has a substantially planar surface (3a) arranged to be in contact with the planar surface of the conveyor belt (4).
  4. The perforating device according to claim 1 or 2, wherein said at least one perforating element (3, 3', 3A, 3B, 3A', 3B') comprises a front face (A) provided with cutting elements and a back face (B) arranged to be received by said at least one support structure (8, 8', 8A, 8B, 8A', 8B').
  5. The perforating device according to any one of the preceding claims, wherein said at least one support structure (8, 8', 8A, 8B, 8A', 8B') has a pivot axis AA around which at least one perforating element (3, 3', 3A, 3B, 3A', 3B') rotates.
  6. The perforating device according to any one of the preceding claims, comprising at least one additional reel (6') positioned across from an additional planar surface (5') of the conveyor belt (4), intended to receive the film.
  7. The perforating device according to any one of the preceding claims, comprising at least one additional conveyor belt (4'), and at least one additional planar surface (5') thereon to receive the film (1).
  8. The perforating device according to any one of the preceding claims, wherein said conveyor belt (4) is mounted on at least two cylinders (9) arranged to rotate.
  9. The perforating device according to any one of the preceding claims, wherein the axis (7, 7') of the reel (6, 6') has first and second ends each provided with a side wall (10) and at least one aforementioned support structure (8, 8', 8A, 8B, 8A', 8B') extending from one side wall (10) to the other.
  10. The device according to any one of the preceding claims, comprising at least one guide (12) for adjusting the spacing between each perforation pattern.
  11. The device according to any one of the preceding claims, wherein the predetermined speed of the conveyor belt (4) is comprised between 20 and 400 meters per minute (m/min), preferably between 100 and 350 m/min, more preferably between 150 and 350 m/min, advantageously between 200 and 350 m/min.
  12. The device according to any one of the preceding claims, wherein said at least one perforating element (3, 3', 3A, 3B, 3A', 3B') has a geometric shape chosen from the group consisting of a semi-circle, a circle, part of the circle such as the arc of circle, a square, a straight line, curved line, a rectangle, a triangle, or combinations thereof.
  13. A printing line comprising the perforating device according to any one of the preceding claims.
  14. A film wrapping machine comprising the perforating device according to any one of claims 1 to 12.
EP14172179.5A 2014-06-12 2014-06-12 Device for perforating a film Active EP2954990B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
PL14172179T PL2954990T3 (en) 2014-06-12 2014-06-12 Device for perforating a film
PT141721795T PT2954990T (en) 2014-06-12 2014-06-12 Device for perforating a film
EP14172179.5A EP2954990B1 (en) 2014-06-12 2014-06-12 Device for perforating a film
ES14172179.5T ES2596315T3 (en) 2014-06-12 2014-06-12 Film punching device
PCT/EP2015/062884 WO2015189238A1 (en) 2014-06-12 2015-06-10 Film perforation device
US15/317,184 US10232525B2 (en) 2014-06-12 2015-06-10 Film perforation device
RU2016150552A RU2656428C1 (en) 2014-06-12 2015-06-10 Device for punching film
HRP20161263TT HRP20161263T1 (en) 2014-06-12 2016-10-03 Device for perforating a film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14172179.5A EP2954990B1 (en) 2014-06-12 2014-06-12 Device for perforating a film

Publications (2)

Publication Number Publication Date
EP2954990A1 EP2954990A1 (en) 2015-12-16
EP2954990B1 true EP2954990B1 (en) 2016-07-13

Family

ID=50943135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14172179.5A Active EP2954990B1 (en) 2014-06-12 2014-06-12 Device for perforating a film

Country Status (5)

Country Link
EP (1) EP2954990B1 (en)
ES (1) ES2596315T3 (en)
HR (1) HRP20161263T1 (en)
PL (1) PL2954990T3 (en)
PT (1) PT2954990T (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1027531B1 (en) 2019-08-27 2021-03-30 Diopass Sprl HEAT SHRINK PACKAGING

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000301625A (en) * 1999-04-23 2000-10-31 Sumitomo Rubber Ind Ltd Feeding/perforating device for strip component
NZ594363A (en) * 2011-08-01 2012-12-21 Corcel Ip Ltd Method and machine for perforating corrugated board as part of a continuous cold forming process
FR2986509A1 (en) 2012-07-11 2013-08-09 Sidel Participations Equipment for bundling batch of bottles in bundling machine, has perforation device to receive and transmit tape of heat shrinkable film to cutting device, where perforation device punches series of puncture holes in tape

Also Published As

Publication number Publication date
HRP20161263T1 (en) 2016-11-18
PL2954990T3 (en) 2017-01-31
PT2954990T (en) 2016-10-12
EP2954990A1 (en) 2015-12-16
ES2596315T3 (en) 2017-01-05

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