FR2703669A1 - Device for cutting and applying the start of tape of a new reel on a mandrel of a reel. - Google Patents

Abstract

The present invention relates to a device for cutting and applying the start of the strip of a new reel on a mandrel of a winder. Device characterized in that it is essentially constituted by a cutting means (3) cooperating with a means (4) for clamping the strip and by a means (5) for applying an adhesive strip or the like on the cut end of the tape and pressing and applying the latter and the adhesive tape to the mandrel (1) of the new spool. The invention is more particularly applicable to the winding of fragile materials.

Description

Device for cutting and applying the start of a new tape

  The present invention relates to the field of

  machines for winding web materials for the purpose of

  The invention relates to a coil arrangement and relates to a device for cutting and applying the start of a new coil onto a mandrel of a winder. The winding of belts by means of winding machines generally causes the problem, on the one hand, of the cut of the strip and, on the other hand, of the correct application of the end of the strip on the mandrel after

the cup.

  For this purpose, it can be proposed to make the cut during the running of the strip according to a principle called cutting on the fly, in which a knife is projected in the course of the strip and the end

  cut off the strip is projected onto a mandrel

  glued or with one or more adhesive tapes

  receiving of said end, which is clamped in

  in addition to said mandrel by the band during its

  rolling. Such a cut during the scrolling of the strip allows a significant yield, virtually without

  slowing down the speed of the tape when cutting. However, in the case of bank winding

  in relatively friable materials, a cut on the fly compromises the good behavior of the cut end which

  may possibly be damaged over a length of

  latively important, or even tend to provoke

  a break of the band at a certain distance from the

  cutting right, which can lead to poor

  rolling, or even a winding fault, the band not even being applied to the new mandrel or

presenting a flap.

  It was also proposed to carry out the

  pe, after a stop of the winding of the full spool, manually, the band to be wrapped being stored in a

  In such a case, the cut is made manually.

  two operators, one of whom is

  the other sticks the new mandrel, then applies said end to said new mandrel, whose start is controlled by one of the two operators Such an embodiment requires

  however, operator intervention in a machine

  not running, which inevitably entails a risk of accident

  On the other hand, because the intervention is

  killed manually, it is necessary to provide

  large size emulator, especially in the case of winding at high speeds, to overcome any

  risk of exceeding the cutting and connecting time

  In addition, the connection of the tape start on the new mandrel is necessarily realized

  because this operation is carried out relatively

quickly.

  The present invention aims to overcome these disadvantages. Its purpose is indeed a device for cutting and applying the beginning of a new tape.

  coil on a mandrel of a winder, characterized in that it consists essentially of a cutting means cooperating with a clamping means of the band and by a means for applying an adhesive tape or the like on the end cut off the band and pressure and application

  cation of the latter and the adhesive tape on the mandrel of the new coil. The invention will be better understood, thanks to the

  description below, which relates to a method of

  preferred embodiment, given by way of non-limiting example, and explained with reference to the accompanying diagrammatic drawings, in which: Figure 1 is a side elevational view of the device according to the invention mounted on a winder; Figure 2 is a side elevational view and in section on a larger scale of the device; Figure 3 is an enlarged side elevation and sectional view of the cutting means; FIG. 4 is a sectional and plan view of the cutting means, and FIG. 5 is a plan view of the device.

  in position of preparation of the joint.

  The device for cutting and applying the de-

  The purpose of the web of a new reel on a mandrel 1 of a reel 2 essentially consists of a cutting means 3 cooperating with a means 4 for clamping the web and by means 5 for applying an adhesive tape or

  analogous 6 on the cut end of the band and pres-

  its application and the band

  adhesive on the mandrel 1 of the new coil.

  The cutting means 3 (Figures 2 to 4) is in the form of a housing 7 for housing and guiding a knife 8 movable in a slot 8 ', said housing

  being mounted on a frame 9 for guiding the strip,

  posed with possibility of tilting, under the action of a jack 10, in the frame 11 of the winder 2, said

  box 7 being movable transversely to the direction

  scrolling of the strip, its face carrying the slot

  8 'being turned towards said band.

  The casing 7 is mounted by its ends in

  the frame 9 by means of end guide slides

  12, cooperating by guide rollers 13 with guide rails of said frame 9 and is actuated by

  4 moving, transversely to the direction of the march,

  of the strip, by means of jacks 14 bearing on the face of said box 7 opposite to that of guiding of the knife 8, said jacks 14 being mounted on a support bar 15 of the frame 9.

  The knife 8 is mounted on a carriage 16 guided, by means of rollers 17, in a rail 18 meshes

  swam in the box 7 on either side of the slot 8 ', said carriage 16 being actuated in longitudinal displacement in the box 7 by means of a jack without rod 19. Such a mounting mode of the carriage 16 allows guidance

  perfect of the latter, without risk of deflection of the knife 8, the carriage 16 being connected directly to the piston rodless cylinder 19 Indeed, such a cylinder ensures a perfect accuracy of the displacement of the carriage 16 and thus the knife 8 with a relative power installation

  weak. In addition, the casing 7 is provided with two end caps 8 ", mounted in a positionally adjustable manner.

  above the slot 8 'and intended to cover the knife 8 in its extreme positions.

  The means 4 for clamping the strip cooperating with the cutting means 3 is constituted in the form of a transverse counterpart plate 20 provided with a slot 21 intended to cooperate with the end of the knife.

  8 of the cutting means 3, said plate 20 being mounted at the end of the arm 22, pivoting about the axis of the disks.

  23 of the reel shafts 24 of the winder and actuated in pivoting by means of syn-chronized cylinders 25.

  The frame 9, which can be tilted under the action of the jack 10 and provided with rollers 9 'for returning the band, is pivotally mounted about the axis 9 "of one of these return rollers 9' between a retracted position of preparing the means 5 for applying the adhesive tape or the like 6, having the cutting means 3 in a horizontal position, the knife 8 facing upwards, and a cutting and applying position of the strip end cut substantially vertically, in a plane tangential to the generatrix described by the axes of the reel shafts 24 mounted on the discs 23 of the reel

2 (Figure 2).

  According to one characteristic of the invention, the

  Roller advantageously comprises a number of clamping means 4 equal to that of the reel shafts 24 The mounting of the pivoting arms 22 on the axis of the disks 23

  allows, during the operation of cutting the band, ame-

  the transverse counterpart plate 20 of the means 4 for clamping the strip in a position perfectly tangential to the running plane of said strip, in

face of the cutting means 3.

  According to another characteristic of the invention and as shown in FIG. 2, the chassis 9

  is further provided with means 26 for blocking the

  during the cutting operation and application on the mandrel of the new coil, this means 26 cooperating with

a return roller 9 '.

  The locking means 26 consists, preferably

  rence, by a transverse bar 27 movably mounted in a plane passing through the axis of the roller 9 'corresponding, through at least one actuating cylinder 28, and a cross member 29 of the frame 9

  supporting said cylinder 28 and transverse bar 27.

  Thus, by actuation of the jack or cylinders 28, the transverse bar 27 is force-applied against the roller

  9 'corresponding and realizes a blocking of the band in de-

  scrolling. According to another characteristic of the invention,

  not shown in the accompanying drawings, the housing 7 of

  and guiding the knife 8 of the cutting means 3 is provided with centering means and end of stroke detection cooperating with means of corresponding shape provided on the ends of the arms 22 of support of the

  counterpart plate 20 forming the clamping means 4.

  The centering and detection means can advantageously

  be formed in the form of truncated holes

  leading to a restricted section on a

  end-of-travel contact and the corresponding shape means

  laying on the ends of the arms 22 of sup-

  port counterpart plate 20, then have a conical pin shape, the end cooperates in

  end of centering stroke with the end-of-course contact

  means provided on the box 7.

  This end-of-stroke contact is intended, on the one hand, to detect the cooperation between the cutting means 3 and the clamping means 4 and, on the other hand, the application

  effective against each other in order to allow the

  pe of the band by the knife 8 mounted on the carriage 16

  and actuated by the rodless jack 19.

  Means 5 for applying an adhesive strip or the like 6 to the cut end of the strip and

  pressure and application of the latter and the ban-

  adhesive on the mandrel 1 of the new coil is advantageously constituted by a vacuum cylinder 31 (FIGS. 2 and 5) having a perforated strip 32 of

  holding by depression of the adhesive strip 6 or

  said vacuum cylinder 31 being mounted manually.

  pivoting frame in the tilting frame 9 by means of

  arms 33 actuated by at least one actuator 34.

  According to one characteristic of the invention, the vacuum cylinder 31 is provided with at least one indexing means 35 consisting of a wheel 36 mounted on a pivoting lever 37 actuated by a jack 38, provided on an arm 33, and cooperating with recesses 39 of corresponding shape provided on the corresponding end of the

  vacuum cylinder 31 (Figure 2).

  The recesses 39 are advantageously in the name of

  two of them and are arranged at an angular distance corresponding to the linear distance between the central axis of the perforated strip 32 of the vacuum cylinder 31, in the cutting and application position of the strip, and the

  slot 8 'of the box 7 of the cutting means 3.

  of adhesive or the like 6 can be applied to the

  perforated 32 of the vacuum cylinder 31 in a position

  indexing of said cylinder 31 corresponding to the po-

  application of the end of the cut and

  of the adhesive strip on the mandrel 1, then said cylinder

  dre 31 is brought into the second indexing position,

  in which it is maintained through the medium of

  rin 38 bringing the wheel 36 by pivoting the lever 37

  in the recess 39 corresponding This second posi-

  the indexing position corresponds to a waiting position, in which the band is cut by the knife 8 of the means of

cut 3.

  According to another characteristic of the invention

  and as shown in FIGS. 2 and 5 of the drawings

  the casing 7 of the cutting means 3 is advantageously provided with an intermediate guide plate 40 assembled with

  pivotally on the casing 7 and extending in

  rection of the vacuum cylinder 31 by overlapping

  the latter in the position of preparation of the means of application of the adhesive strip or the like 6, as well as in the cutting position of the strip, this plate 40 is

  moving, under the effect of the push of the cylinder to de-

  pressure 31 in the direction of the mandrel 1 during the application phase of the end of the cut strip and the adhesive strip or the like 6 on said mandrel 1 and being returned in position by a spring 41. During this phase of application , the cylinder

  depression 31 is moved against the mandrel 1 by

  intermediate of the jacks 34 acting on the arms 33

  support, so as to pivot the housing

  seems around its axis of articulation.

  A rotation of the reel shaft 24 of

  wearing the mandrel 1 in the opposite direction to the winding direction will have the effect of moving the cylinder 31 in rotation, so as to bring it to a position corresponding to its first indexing position, that is to say that o the

  adhesive strip 6 is facing the mandrel 1, and to achieve

  an additional rotation in this direction, in order to

  total application of the adhesive tape on the man-

drin 1 by ironing.

  The device according to the invention operates as follows: At the end of the winding of a full spool, the discs 23 of the winder 2 are rotated in order to bring a new mandrel 1 into position. winding,

  as shown in Figures 1 and 2 of the accompanying drawings.

  During the winding of the previous coil, an operator has brought the vacuum cylinder 31, in the position of preparation of the frame 9, that is to say in the rotated position so as to present the slot 8 'of the knife 8 tour upwards, in the first indexing position shown in FIG. 5 of the accompanying drawings, in which the perforated strip 32 is also rotated

  upwards and extends as an extension of the inner plate

  In this position, the opera-

  application of an adhesive strip 6 over the perforations

  band 32 and triggers the aspiration to inte-

  cylinder 31, so that said strip 6 is

  maintained, then it turns said cylinder 31 to ame-

  this one in its second indexing position, in

  which the wheel 36 cooperates with the second recess-

39.

  The means 4 for clamping the strip is pivoted, via the cylinders 25, in its service position, above the new mandrel 1 and the frame 9

  support of the box 7 of the cutting means 3 is then

  voted, under the action of cylinder 10, towards the posi-

  1. At the same time, the casing 7 is moved into its final service position, in which its centering and end-of-stroke detection means co-operate with the corresponding shape means provided for. on the

  ends of the support arms 22 of the counter plate

  part 20 forming the clamping means 4 and the winding of the full spool is stopped, so that the strip is ready to be cut by the knife 8.

  detected by the corresponding means of the box 7 self-

  prior to cutting, the triggering of the

  cutting the bandage under tension and preventing any

  of the latter, the band winding, during the

  pe, in known manner, on an accumulator 30 mounted upstream of the winder 2 Such accumulator 30 is known

  in itself and its operation is not described in detail.

  The knife is then moved transversely to

  the strip of material to be cut by actuating its

  rin 19 driving its support carriage 16, being

  guided, on the one hand, in the slot 8 of the box 7 and, on the other hand,

  on the other hand, in slot 21 of the counterpart plate

  transverse 20 of the clamping means 4.

  Then, the vacuum cylinder 31 is pivoted

  by actuating its jack or cylinders 34, against

  the new mandrel 1, in order to tighten the cut strip

  the latter, then the spool shaft 24 is rotated slowly in the opposite direction to the winding direction in order to bring the vacuum cylinder 31 with the tape start and the adhesive strip 6 opposite the new mandrel 1 and apply them to the latter by continuing this rotational movement for a total application of

  the strip 6 on the mandrel 1, this application being af-

  closed by a consecutive movement back and forth from Rome.

  tation, so as to perform an ironing of the end thus formed on the new mandrel 1 The winding of the new coil can then begin, the blocking means

  When the ge 26 is unlocked, the vacuum cylinder 31 pivots

  in its starting position, the box 7 being likewise

  then returned to its starting position, before

  also in the starting position, of the frame 9 and the clamping means 4 swinging into its starting position

  by actuating the arms 22 by means of the jacks 25.

  Thanks to the invention it is possible to realize

  a winder in which the cut of the strip and the application

  citation of its beginning on a mandrel of a new reel are performed perfectly, that is to say without deterioration of the band at the cutting and without risk of formation of folds of the beginning of band at the This type of winder is particularly

  suitable for winding brittle materials.

  Of course, the invention is not limited to

  embodiment described and shown in the drawings

  nexés Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of equivalent techniques, without leaving

  for all that the field of protection of the invention.

he

Claims (13)

R E V E N D I C A T IO N S   1 Device for cutting and applying the de-   strip aim of a new coil on a mandrel of a winder characterized in that it consists essentially of a cutting means (3) cooperating with means (4) for clamping the band and by a means (5) ) applying an adhesive tape or the like (6) on   the cut end of the band and pressure and application   of the latter and of the adhesive tape (6) on   the mandrel (1) of the new coil.   2 Device according to claim 1,   characterized in that the cutting means (3) is in the form of a housing (7) accommodating and guiding a knife (8) movable in a slot (8 '), said box being mounted on a frame (9) for guiding the belt, arranged with the possibility of tilting, under   the action of a jack (10) in the frame (11) of the   roller (2), said box (7) being movable transversely   badly at the tape's direction of movement, its   this bearing the slot (8 ') being turned towards said band.   3 Device according to claim 2,   characterized in that the box (7) is mounted by its ex-   trenches in the frame (9) by means of end guide sliders (12) cooperating by guide rollers (13) with guide rails of said frame (9)   and is operated in displacement, transversely to the di-   scrolling rection of the strip, by means of jacks (14) bearing on the face of said box (7) opposite that of guiding knife (8), said jacks (14) being mounted on a support bar (15). ) of the chassis (9).   4 Device according to any one of the   Claims 2 and 3, characterized in that the knife (8) is mounted on a guided carriage (16) via   casters (17) in a rail (18) provided in the casing   sound (7) on either side of the slot (8 '), said ring   riot (16) being actuated in longitudinal displacement in the box (7) by means of a rodless cylinder (19). Device according to any one of Claims 2 to 4, characterized in that the box (7)   is provided with two end covers (8 "), mounted   adjustable in position, above the slot (8 ') and intended to cover the knife (8) in its extreme positions.   6 Apparatus according to any one of the   Claims 1 to 5, characterized in that the means (4) for clamping the strip cooperating with the cutting means (3) is constituted in the form of a counter-part plate   cross-member (20) provided with a slot (21) for   operating with the end of the knife (8) of the cutting means (3), said counterpart plate (20) being mounted at the end of the arm (22), pivoting about the axis of the disks (23) supporting the winder shafts (24) of the retractor and pivoted by means of cylinders synchronized (25).   7 Device according to any one of the   Claims 1 to 3, characterized in that the frame (9) can be tilted under the action of the jack (10) and provided with   of rollers (9 ') for returning the belt, is pivotally mounted   around the axis (9 ") of one of these rollers of   voi (9 ') between a retracted position for preparing the means (5) for applying the adhesive tape or the like (6), having the cutting means (3) in a horizontal position, the knife (8) facing the up, and a   cutting position and application of the end of ban-   cut substantially vertically, in a flat plane   gener to the generator described by the axes of the reel shafts 24 mounted on the discs 23 of the reel (2).   8 Apparatus according to any one of the   1 and 7, characterized in that the winder advantageously comprises a number of clamping means   (4) equal to that of the spool pins (24).   Apparatus according to any one of Claims 1 to 3 and 7, characterized in that the frame (9) is further provided with means (26) for locking the web during the cutting and application   on the mandrel of the new coil, this means (26) co-   operating with a return roller (9 ').   Device according to claim 9,   characterized in that the locking means (26) is constituted   killed, preferably, by a transverse bar (27)   displaceably in a plane passing through the axis of the roller (9 ') corresponding, through at least one actuating jack (28), and a cross member (29) of the frame 9 supporting said jack (28) and bar transverse (27).   11 Device, according to any one of   Claims 2 to 6, characterized in that the casing   (7) housing and guiding the knife (8) of the means of   section (3) is provided with means for centering and detecting   end of stroke cooperating with means of corresponding shape provided on the ends of the arms (22) for supporting the counterpart plate (20) forming the clamping means (4).   Device according to claim 11,   characterized in that the centering and detecting means   are advantageously constituted in the form of   truncated cones leading to their base section res-   trimming on a limit switch contact and the correspondingly shaped means provided on the ends of the arms   (22) for supporting the counterpart plate (20),   then feel a conical rod shape, whose end cooperates at the end of centering stroke with the contact of   limit of the means provided on the box (7).   13 Device, according to any one of   Claims 1 to 3, 7, 9 and 10, characterized in that   means (5) for applying an adhesive tape or   log (6) on the cut end of the strip and   of the latter and of the adhesive strip on the mandrel (1) of the new coil is advantageously constituted by a vacuum cylinder (31) having a perforated band (32) for holding the adhesive strip by depression ( 6) or the like,   vacuum cylinder (31) being pivotally mounted   aunt in the tilting frame (9) by means of arms (33)   actuated by at least one jack (34).   Device according to Claim 13, characterized in that the vacuum cylinder (31) is provided with at least one indexing means (35) consisting of   a wheel (36) mounted on a pivoting lever (37) ac-   by a jack (38), provided on an arm (33), and co-   operating with recesses (39) of corresponding shape   provided on the corresponding end of the cylinder pressure (31).   Device, according to any one of   claims 2, 4, 5 and 14, characterized in that the   recesses (39) are advantageously two in number and are arranged at an angular distance corresponding to the linear distance between the central axis of the perforated strip (32) of the vacuum cylinder (31), in the cutting and application position of the strip, and the slot (8 ') of the box (7) cutting means (3).   16 Apparatus, according to any one of   Claims 2 to 5, 11 and 12 to 15, characterized in that   that the box (7) of the cutting means (3) is advantageously   provided with an intermediate guide plate (40)   pivotally mounted on the casing (7) and extends   in the direction of the vacuum cylinder (31) in   partially opening the latter in a position of preparation   means (5) for applying the adhesive tape or the like   6, and in the cutting position of the belt, this plate (40) moving, under the effect of the thrust of the vacuum cylinder (31) in the direction of the mandrel (1) 5 during the phase d applying the end of the cut tape and the adhesive tape or the like (6) to said   chuck (1) and being biased into position by a spring (41).