Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H19/00—Changing the web roll
  • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
  • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
  • B65H19/1842—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact
  • B65H19/1852—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact taking place at a distance from the replacement roll
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/46—Splicing
  • B65H2301/461—Processing webs in splicing process
  • B65H2301/4615—Processing webs in splicing process after splicing
  • B65H2301/4617—Processing webs in splicing process after splicing cutting webs in splicing process
  • B65H2301/46174—Processing webs in splicing process after splicing cutting webs in splicing process cutting both spliced webs separately
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/46—Splicing
  • B65H2301/464—Splicing effecting splice
  • B65H2301/46412—Splicing effecting splice by element moving in a direction perpendicular to the running direction of the web

Definitions

• the present invention relates to devices making it possible to carry out a continuous movement of a strip by securing several strips one after the other.
• the strips are wound on reels, and the joining occurs when the end of the unwinding of a reel begins to start the unwinding of the following reel.
• the invention applies in particular to strips intended to form sachets for packaging.
• a device of this type is known, described in document EP 0 182 724 A.
• Such a device makes it possible to glue strips continuously, securing the start of a waiting strip and the end of a rolling strip
• Des cutting means make it possible to cut the ends of the strips to be joined
• Two opposite rollers placed on either side of the strips make it possible to maintain longitudinally in correspondence, in a holding zone, the end sections of strips to be joined
• Adhesive means comprising a movable support and the opposite rollers, make it possible to apply a single-sided adhesive tape in the bonding zone covering the ends of the strips to be joined.
• the cutters are arranged in a fixed longitudinal position, upstream of the rollers
• the rollers are fixed in the longitudinal position, and can move transversely
• the movable support is pivotable to a fixed axis
• a length of adhesive is positioned at the end of the waiting strip, using the mobile support, then the excess length of adhesive tape is transferred to one of the rollers.
• the rollers press the unrolling tape on the protruding part of adhesive tape, cut the drop of unrolling tape and ensure the bonding by simultaneous entrainment of the two bands between the rollers
• An object of the present invention is to design a new device for gluing continuous strips, in which the preparation of adhesive tapes is simpler and faster, while ensuring reliable and resistant bonding of the strips one after the other. Another object is to design such a device whose structure is particularly simple and inexpensive, and whose operation is particularly reliable
• the device of the invention must also allow the bonding of strips end to end, by reducing handling, by reducing the preparation time, by simplifying the preparation, and by allowing either the bonding of a single adhesive or the bonding of two adhesives
• a continuous tape bonding device for securing the start of a waiting tape and the end of a drop-down tape, comprises active members comprising means for cut to cut the ends of the strips to be joined, and bonding means for connecting the ends of the strips to be joined by at least one adhesive tape, the active members being distributed in a first and a second separate module, arranged on both sides other bands in the assembly area, the modules being movable alternately in opposite directions from each other upstream and downstream of the assembly area, between a first extreme state and a second extreme state, the modules having a blocking element for securing the end of the band waiting on a downstream portion of the bearing surface, the bonding means and the cutting means being offset longitudinally on the modules in such a way that, when the modules are in one of the extreme states, the cutting means cut the strips in an intermediate position of the end sections of the waiting strip and of the unwinding strip, and, when the modules then been moved to the other of the extreme states, the bonding means are found opposite the
• holding means adapted to hold the end section of the strip on standby on the inner portion of the bearing surface of the module initially upstream, and to keep the end section of the unwinding strip on the inner portion of surface d module support initially downstream.
• the bonding means and the cutting means are offset by a determined amplitude equal to the amplitude of movement of the modules
• the holding means comprise:
• a reel brake to block the rotation of the waiting bobbin
• a locking clamp adapted to selectively block the unwinding strip downstream of the modules
• the bonding means may advantageously comprise at least one mobile adhesive support mounted on each module, said mobile support comprising a bearing surface shaped to receive an adhesive tape and to retain it by suction and being movable between at least one preparation position where its support surface is accessible for applying the adhesive tape, and a bonding position where its support surface is in abutment against a strip to be bonded to transfer the adhesive tape onto it
• the modules can also be moved laterally, perpendicular to the plane of the strips to be bonded, and urged by actuation means, between a close position in which they guide the strips in the assembly zone during cutting and bonding. , and a retracted position in which they move away from the strips after bonding and before cutting.
• the modules are displaceable by longitudinal translation.
• the modules are movable by rotation around transverse axes parallel to the plane of the strips.
• - Figure 1 is a general schematic side view of a continuous tape bonding device according to an embodiment of the present invention
• - Figure 2 is a side view on a larger scale of the active tape bonding members of the device of Figure 1, in the standby position;
• FIG. 3 is a side view of the device of Figure 1 in the cutting position
• FIG. 4 is a side view of the device of Figure 1 in the bonding position
• FIG. 5 is a side view of the device of Figure 1 in the position of ejection of the scraps after bonding, -
• FIG. 6 is a side view of the active members of a continuous tape bonding device according to a second embodiment of the present invention.
• FIGS. 13 to 15 illustrate the main stages of bonding by a bonding device according to another embodiment of the present invention, when the unrolling strip is the strip situated on the right, and
• the device for gluing continuous strips comprises two horizontal support axes 1 and 2 intended to each receive a respective coil 3 or 4 carrying a strip.
• the device is shown in the figure in a state where the reel 4 supports a drop-down strip 5 soon at the end of the roll-out, and the reel 3 supports a standby strip 6 which will have to continue.
• the coils 3 and 4 rotate freely on their respective axis 1 or 2, the drive of the strips being provided downstream of the device.
• the support axes 1 and 2 are however associated with brakes which can be controlled to selectively immobilize the coils 3 and 4 in rotation.
• the buffer device 10 comprises a succession of rollers comprising a first fixed roller 11, then a movable roller 12 mounted on a carriage 13 sliding along arrow 14, then a fixed roller 15 The carriage 13 slides along arrow 14 to get closer and move away from the fixed rollers 11 and 15, being stressed by elastic means not shown in the figure and tending to move it away from the fixed rollers 11 and 15.
• the buffer device 10 allows the d unrolling of the unrolling strip 5 downstream of the buffer device 10 is continuous and independent of the upstream scrolling It is thus possible to temporarily stop the running of the bands inside the bonding device to ensure that they join together without disturbing downstream tape scrolling
• the active members are distributed in a first module 16 and a second module 17 distinct from each other and arranged on either side of the strips 5 and 6 in the area
• the modules 16 and 17 are alternately movable in opposite directions from each other upstream and downstream of the assembly area as illustrated by the respective double arrows 18 and 19. embodiment of FIG.
• the movement of the modules 16 and 17 is a movement of longitudinal translation in the longitudinal direction of the strips in the assembly zone 7, and according to a movement of determined amplitude between a first and a second extreme state Sur Figure 1, the modules 16 and 17 are in the first extreme state, while in Figure 3 the modules 16 and 17 are in the second extreme state.
• a locking clamp 20 is adapted to selectively block the unwinding strip 5 downstream of the modules 16 and 17 and upstream of the buffer device 10.
• a coil brake not shown in the figures, makes it possible to block the rotation of coil 3 on standby.
• FIG. 2 showing the elements of the bonding device on a larger scale
• the modules 16 and 17 are each mounted with longitudinal sliding according to respective longitudinal slides 21 and 22 on a respective intermediate support 23 or 24 whose longitudinal position is fixed
• the modules 16 and 17 are driven in translation by respective cylinders 25 and 26, controlled by a control device
• Each intermediate support 23 or 24 can be moved laterally, in a direction perpendicular to the plane of the strips 5 and 6 in the assembly area 7, relative to a respective fixed support 27 or 28, the movement of the supports intermediates being provided by respective clamping cylinders 29 or 30 controlled by the control device
• each of the modules 16 and 17 has a generally parallelepiped shape, limited in particular by a bearing surface comprising an inner portion 31 or 32 of bearing surface and a downstream outer portion 33 or 34 of surface support
• the inner portions 31 and 32 of the support surface are opposite one another, so that the strips 5 and 6 run longitudinally between them.
• the outer downstream portions 33 and 34 of the bearing surface are oriented outward, for example at 90 ° relative to the corresponding inner portions 31 and 32 of the bearing surface, so as to be easily accessible to the user.
• Each module 16 or 17 comprises a blocking element respectively 35 or 36, constituted for example by a clamp actuated by a jack 37 or 38 piloted by the control device, and adapted to secure the end of the strip waiting on the corresponding external downstream portion 33 or 34 of support surface
• the blocking element 35 secures the end of the waiting band 6 on the external downstream portion 33 of the surface of module 16 support.
• the blocking element 36 of module 17 is released
• each module can comprise, as illustrated in FIG. 2, an input roller such as the roller 39 of the module 16, and a output roller such as the roller 40 of the module 16.
• the interior portions 31 and 32 of surface 1 support are advantageously provided with suction holes distributed over their length and connected to dry pneumatic suction means 41 represented, 42, 43 and 44.
• the suction means are controlled by the control device, and allow one of the strips 5 or 6 to be pressed onto the corresponding module 17 or 16, during cutting, gluing or translating operations
• the first module 16 comprises two transverse slots 45 and 46 offset longitudinally relative to one another in the direction of travel of the strips, and comprises a movable adhesive support 47 disposed between slots 45 and 46
• the second module 17 comprises two mobile adhesive supports 48 and 49 offset longitudinally in the direction of travel of the strips, and comprises a knife 50 disposed between the mobile supports 48 and 49.
• Each movable adhesive support such as supports 47, 48 and 49 has a support surface 51 shaped to receive an adhesive tape and retain it by suction.
• the mobile adhesive support is associated with pneumatic suction means connected to holes. suction distributed over the supporting surface 51 to retain an adhesive tape pressed against said surface by its non-sticky face
• Each movable adhesive support is movable between at least one preparation position in which its supporting surface such as the surface 51 is accessible for the application of the adhesive tape, and a bonding position in which its nasty surface 51 is pressed against a band to stick like band 6 or band 5 to transfer the adhesive tape she wears on her
• the mobile support 47 is actually movable between three positions, according to two successive perpendicular movements.
• the movable support 47 is movable entie the position of preparation in which the carrier surface is separation of the strips 5 and 6 and a standby position illustrated in FIG. 2 in which the support surface 51 is slightly set back opposite the strips to be bonded 5 and 6
• the mobile support 47 is movable between the previously defined standby position and the previously defined bonding position.
• This second lateral translational movement can be controlled by a jack 52, controlled by the control device.
• the first transverse translational movement can for example be performed by manual actuation of the mobile support 47, slidably mounted in the module 16.
• the other mobile supports 48 and 49 can have the same structure and the same operation.
• the knife 50 is movable by lateral translation, perpendicular to the plane of the strips 5 and 6 to be bonded, between a withdrawal position illustrated in FIG. 2 in which the knife 50 is away from the strips 5 and 6, and a position of section illustrated in Figure 3 wherein the knife cuts the strips 5 and 6 and enters the slot 45 itself shaped and arranged to allow this penetration.
• the bearing surfaces 31-34, the locking elements 35, 36 and the suction holes associated with the pneumatic suction means 41-44 constitute holding means which are adapted to maintain an end section of strip on standby 6 on the module 16 initially upstream, and to maintain the end section of the unrolling strip 5 on the module initially downstream 17
• the bonding means constituted by the movable adhesive supports 47-49 and the cutting means are offset longitudinally on the modules 16 and 17.
• the amplitudes of longitudinal translation movement of the modules 16 and 17 are chosen so that, when the modules are in one of the extreme states as illustrated for example in FIG. 2, the cutting means constituted by the knife 50 can section the strips 5 and 6 at an intermediate position of the end sections of the waiting strip 6 and the unrolling strip 5, and, when the modules 16 and 1 1 have then been moved into the other of the extreme states as illustrated in FIG. 4, the bonding means 47, 48 are located opposite the extreme edges to be bonded on the strips and the relative movement of the modules 16 and 17 has displaced the end falls away from the zone for bonding the strips . For this, on each module 16 or 17, the bonding means 47-49 and the cutting means 45, 50 are offset according to said determined amplitude. This operation is explained in relation to the rest of Figures 2 to 5, as well as Figures 7 to 12
• the device is on standby, the modules 16 and 17 are separated laterally from one another, allowing the free circulation of the unrolling strip 5.
• the user has passed the end of the waiting band 6 between the two modules 16 and 17, and the waiting band end section runs along the inner portion of the bearing surface 31 and is pressed and secured to the downstream outer surface portion 33 support by the clamp 35 biased by the jack 37
• the standby coil 3 is locked in rotation by its braking means
• the locking clamp 20 is in the open position, allowing the sliding band 5 to slide freely
• the modules 16 and 17 have been moved laterally in their close position, by actuation of the clamping cylinders 29 and 30, so that a small space exists between the two inner portions 31 and 32 of the bearing surface , favoring the guiding of the bands 5 and 6
• the locking clamp 20 is then tightened, to block the movement of the moving strip 5, and the pneumaticfues suction means 41, 42, 43 and 44 hold the strip sections against the corresponding modules 16 or 17 in the assembly area 7
• the two modules 16 and 17 remain in their first extreme position they had in the standby position of Figure 2, the first module 16 being upstream, the second module 17 being downstream.
• the knife 50 is actuated which cuts the two strips 5 and 6 and enters the slot 45, then returns to the withdrawal position.
• the modules 16 and 17 are then moved by actuation of the corresponding valves 25 and 26, as illustrated in FIG. 4, to bring the first module 16 to the extreme downstream position and the second module
• the pneumatic suction means 41-44 maintain the. corresponding parts of strip sections in sliding contact against the respective modules 16 or 17
• the movable adhesive supports 47 and 48 are located opposite one another and simultaneously opposite the corresponding precut ends of the upstream portion of waiting tape 6 and of the downstream portion of unrolling tape 5
• the lateral displacement of the mobile adhesive supports 47 and 48 then makes it possible to apply the adhesive tapes which they carry, by their faces; against the corresponding faces of the ends of the waiting strip 6 and of the unrolling strip 5, for performing a double-sided bonding
• a single-sided bonding can be carried out by placing a single adhesive on one side
• FIG. 10 illustrates the symmetrical operation of the device for the next band change.
• Band 6 has become the drop-down band, while band 5 has become the standby band.
• the actuation of the knife 50 cuts the two strips 5 and 6.
• FIG. 11 the displacement of the modules in the opposite direction displaces the falling strips and brings the movable adhesive supports 47 and 49 one opposite the 'other and opposite the ends of the strips to be glued.
• FIG. 12 after actuation of the mobile adhesive supports 47 and 49, the two strips b and 6 are glued and the scraps can be removed.
• the first module 16 comprises two slots 45 and 46 and a movable adhesive support 47
• the second module 17 comprises a knife 50 and two movable adhesive supports 48 and 49.
• FIGS. 13 to 18 illustrate a different embodiment, in which each module comprises two movable adhesive supports longitudinally offset: the second module 17 comprises the same elements 48, 49 and 50 as in the previous embodiment; the first module 16 comprises a single slot 45 disposed between two movable adhesive supports 47 and 147.
• the modules 16 and 17 can take three positions: an intermediate position illustrated in FIG. 13, in which the knife 50 faces the slot 45, a first extreme position illustrated in FIG. 14 in which the mobile adhesive supports 47 and 48 are opposite one another in the bonding position, and a third extreme position illustrated in FIG. 17 in which the mobile adhesive supports 147 and 49 are opposite one another on the other for bonding
• the knife 50 cuts the standby strip 6 and the unrolling strip 5, previously positioned as in the previous embodiment
• connection is illustrated in FIG. 15, where we see the two adhesive tapes 53 and 54.
• the modules are then brought back to the intermediate position in FIG. 13.
• the falls 55 and 56 can be ejected
• FIG. 6 illustrates another embodiment of the modules 16 and 17, in which the modules 16 and 17 are displaceable by rotation about their respective axes 160 and 170 transverse parallel to the plane of the strips to be bonded.
• the operation of the device in FIG. 6 is similar to that illustrated in FIGS. 13 to 18 In fact, on the module 17, we find the knife 50 and the two mobile adhesive supports 48 and 49, and we find, on the module 16, the slot 45 and the two movable adhesive supports 47 and 147
• the device according to the invention can be controlled automatically by a control device actuating, according to the desired sequences, the jacks moving the active elements.

Landscapes

• Replacement Of Web Rolls (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Package Closures (AREA)
• Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Basic Packing Technique (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9494230

Family Applications (1)

Country Status (6)

Families Citing this family (13)

Family Cites Families (10)

• 1996
  • 1996-07-12 FR FR9609058A patent/FR2750968B1/fr not_active Expired - Fee Related
• 1997
  • 1997-07-08 ES ES97932853T patent/ES2167005T3/es not_active Expired - Lifetime
  • 1997-07-08 WO PCT/FR1997/001229 patent/WO1998002372A1/fr not_active Ceased
  • 1997-07-08 EP EP97932853A patent/EP0958222B1/de not_active Expired - Lifetime
  • 1997-07-08 DE DE69707920T patent/DE69707920T2/de not_active Expired - Fee Related
  • 1997-07-08 AT AT97932853T patent/ATE207842T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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