DE3636685A1 - Cutting wide strip of material into narrow strips - involves machine which winds narrow strips onto separate reels - Google Patents

Abstract

The continuous wide strip of material is cut into two or more narrow strips which are then wound onto separate reels. The wide strip (75) passes around a guide roller (76) and is fed between a pair of cutter rollers (77) which cut the strip longitudinally. The cut strip passes around a second guide roller (78) to a contact roller (6). As the cut strip passes around this contact roller, one of the narrow strips is wound onto a first reel (68'). The remaining narrow strip is carried by the contact roller to a gluing roller (67') and then passes onto a second reel (68). The gluing roller is used for joining lengths on narrow strip end to end. USE - Paper manufacture.

Description

The invention relates to a device for winding several ren formed by slitting a wide web of material narrow material webs to supply rolls with guide rolls for the Sheets, with knives for slitting the wide material web and with winding devices with winding cores for the narrower webs of material.

Devices of this type are known for example from DE-AS 14 74 243 and DE-GMS 82 33 364.

The object of the invention is to provide a device of this type create that with good winding quality from the narrow Material webs wound supply rolls without interruption a roll change during the continuous web feed easy handling allowed.  

According to the invention, this object is achieved in a device Generic type solved in that a zen on both sides tralen, the narrow material webs in their running direction mutually leading guide roller in one by rotating driven turning discs rotatable in the machine frame mounted bogie with parallel to the guide roller Axes of rotation are provided two winding devices each in guides of the turning discs with on a diameter line movable winding axes parallel to themselves by drives are guided so that each of the two windings directions from one end of the guides to the center of the Bogie is movable and that everyone at the inner end winding device moved approximately horizontally a swivel-mounted one in the machine frame for changing rolls Cutting knife with pressure roller is assigned to the narrow Cut material webs and separate the front one End of the narrow material web on glued, the winding core bil pressing sleeves or the like.

The device according to the invention allows a continuous Wrap the ge by slitting the wide web of material formed narrow webs of material, being for the purpose of rolling alternately no business interruption is required. Has a supply roll wound from a narrow web of material the desired diameter is reached, the support rollers on the rollers swiveled. Then the sled is in the Move the center of the turning discs and the bogie by 180 ° rotated so that the finished wound supply roll in the center of the bogie and a prepared winding core, for example a glued winding sleeve, for winding one new supply roll in the area of the central guide roller is pivoted. As soon as by rotating the bogie finished wound supply roll around yourself and the  prepared winding core have been pivoted inwards the pressure roller on the winding tube. Then that will Separating knife actuated, so that on the finished supply roll cutting the running web and at the same time cutting through the web Separation cut formed web start pressed on the winding core becomes. The new supply roll is now on the new winding core wound up while the finished wound supply roll from the Center in the end of the guides and removed is and on the pin or the axis of the concerned A new winding core is placed on the winding device.

To avoid that by pivoting the bogie Preparation of the role change in the web due to change undesirable fluctuations in the tension on the running length of the web occur, is provided in a further embodiment of the invention, that the almost completely wound supply roll after its procedure ren in the center of the bogie with this with the turn axis of the bogie aligned winding axis is blocked.

In order to achieve a good and firm winding of the supply rolls, is provided in a further embodiment of the invention that the central guide roller forms a contact roller to which the forming supply rolls are turned on during winding. Air inclusions are reduced by the contact roller. Except the web to be wound can tangentially with the desired one Tension can be supplied.

Expediently, they can be pivoted in the machine frame using levers stored rollers are provided, which between the supply rolls the supply rolls moved to the center of the bogie and the contact roller can be adjusted. The reels are in front of everyone Moving the supply rolls into the center of the bogie, at the beginning of each roll change, to the supply rolls pivoted and remain there until the supply rolls after the  Roll changes can be removed from the machine. You are supposed to be one Prevent the web from running sideways during the procedure and ensure that air pockets are removed after the Supply rolls from the contact roller can be avoided.

The two winding devices mounted in each bogie can by spindles or pressure piston cylinder units be movable in their guides. For the sake of saving space So called so-called rodless pneuma are expediently Tik cylinder used, which are provided with longitudinal slots, in which are directly connected to the piston pins. These pins are with the parts of the winding to be moved directions connected.

Since pneumatic cylinders do not guarantee safe synchronization, is provided in a further embodiment of the invention that Opposite, movable in the guides, the wrap directions with their drives carrying sleds at the same time Running guide with the ends of over in the edge area of the turn disks in guides concentric to the axis of rotation Chains connected to each other that mesh with sprockets, which are attached to fixed shafts. Over the chains Sprockets and the shaft are coupled on both sides, so that ensures the parallelism of both slides to the contact roller and jamming is avoided.

Of course it is possible to put the wide material web in to subdivide more than two strip-shaped material webs and alternately left and right over the contact roller to guide and on coaxially arranged winding cores preferably so-called friction winding shafts, the winding device lines to wind up in the manner described.

In the case of winding devices of the type specified at the outset there now exists  also the need to cut the wide web uncut a wide supply roll without winding up a be to require special winding device. It is special desirable without stopping the feeding of the wide Material web the device from the winding of two or several strip-shaped formed by slitting Material webs on the winding of the wide untrimmed To be able to change material web. To the scope of the To be able to expand the device in this way is according to one inventive design provided that the broad Material web slitting knife can be lifted from this and that on one side of the guide roller in the machine frame a separating knife is pivotally mounted on swivel levers one of the narrow web running to a supply roll or the severed to one side narrow webs. They don't take severed or severed narrow webs of material then the subsequent undivided wide web of material to the other winding device with. The continuing narrow path or the continuing narrow webs are then in the described way and as a new winding tube is a wide winding tube kept ready, initially as an initial pieces the remaining lengths of the narrow strips be wrapped. These pull the uncut wide web after that then only on one side of the device is wrapped. A change of supply roll also takes place when winding a wide web in the previously described Wise.

Conversely, it is now also used to expand the range of applications ches the device desirable, the winding operation of the Wrap a wide film on only one side of the device again on the winding of two or more by slitting formed narrow material webs on both sides of the center len guide roller. After another  inventive development is therefore provided that in the Maschi base frame coaxial with the guide roller on swivel levers a web lifter extending over its length is pivotable is stored with one or only one of the narrow Sheeting separating knife is provided. For the change operation of winding a wide web of material on the winding of two or more slitted slits To make material webs, the web is first meh Knife separating narrow narrow webs swung in. Simultaneously tig or subsequently, the web lifter becomes inactive Position pivoted in the direction of travel of the web, so that the web lift the web off the central guide or contact roller takes off. Now a prepared winding core, for example a glued winding sleeve over the corresponding winding device against the divided narrow web that is on the other Wi is to be wrapped under pressure on the contact roller If you drive up, you can wind the narrow web on it if previously through the separating knife of the web lifter Cut through the web and thereby a front end to be wound up the web was created. The ongoing, longitudinal separated web runs over the web lifter to the winding device on which the finished rolled supply roll with the wide web of material. Once the narrow web of material runs onto the winding roll is in the manner described a roll change made, with the new winding core through an appropriately prepared narrow winding core or narrow winding tube is formed.

The cutting knife of the web lifter expediently cuts through which only over a smaller wrap angle over the Guide roller to the winding device running narrow web.

In a further embodiment of the invention it is provided that the curved sliding surface of the web lift with perforations for  Compressed air outlet is provided. With this configuration the web lifter is provided with a chamber, which ent Talking lines and rotary unions fed compressed air becomes.

The cutting knife can cross in a longitudinal slot of the web lifter slidably guided and by the piston of a piston rod loose cylinder can be moved.

Advantageously, the web lifter and / or the swivel stored knife over bearing rings on the shaft of the guide roller pivoted.

Overall, the device according to the invention thus consists of a longitudinal cutting device with two winding stations, which as Turret winder are trained.

There is also the option of using the undivided one to wrap wide film on a winding station. The winding can be done without an axle or with a winding shaft.

The device enables fully automatic with appropriate Control a transition from winding a wide film on slit foils and vice versa.

In the device according to the invention go with a formwork operating mode, only short web lengths were lost as waste. The supply rolls to be formed are placed against the central one Guide or contact roller. This will trap air and prevents wrinkles.

During the entire reel change process, only find small changes in length and thus low tension Changes take place, which means that even during the role change  high winding quality is guaranteed. This is due to the following Measures attributed:

• - The supply rolls are in the center of the Move the turning disc before the turning discs be pivoted.
• - The platen roller is attached to the supply roll (s) created before the roll (s) move and before the turning disc is swung through.
• - The place where the pressure roller is on the supply roll (the supply rolls) is almost the Place of run-up of the incoming web on the supply roll (s). This ensures that the incoming Path in the process of rolling into the center of the The turning disc is only slightly changed in length becomes. This also means that no essential train voltage changes occur that cause the Can run film web.
• - The roll changing devices are designed so that the pressure rollers of the roll changing device, the touch the web, only a small loop around the cause tapering path and thus no material Chen changes in length of the incoming web or Changes in tension occur.

An embodiment of the invention is described below the drawing explained in more detail. In this shows

Fig. 1 is a side view of the winding device in a schematic representation,

FIG. 2 shows a top view of the device according to line II-II in FIG. 1

Fig. 3 a section through the device according to the line III-III in Fig. 1

Fig. 4 shows the central portion of the winding apparatus shown in Fig. 1 during switching of the operation of the winding of a wide film on a winding position on the winding narrow webs longitudinally split in two winding positions,

FIG. 5 is pivoted into its operating position Bahnabheber of FIG. 4 in enlarged representation,

Fig. 6 is a section through the device along the line VI-VI in FIG. 2 while moving the winding of a plurality of narrow webs of material on a wide web of material,

Fig. 7 shows a section through the device along the line VII-VII in Fig. 2 and

Fig. 8 is a side view of the constant velocity guides turning disc provided according to Fig. 7.

The two side walls 1, 2 of a frame are connected to one another by cross members 3 and a shaft 4 . The shaft 4 is rotatably supported in the side walls 1 and 2 and can be driven by a motor 5 . In its central region, the shaft 4 carries a contact roller 6 , which is firmly connected to the shaft 4 . Near the contact roller 6 are freely rotatable on the shaft 4 two bearing rings 7 and 8 , each having a lever arm 9 and 10 sen. The ends of the lever arms 9 and 10 facing away from the bearing rings 7 and 8 carry a web lifter 11 which extends over the entire width of the contact roller 6 and which is shown more clearly in FIG. 5. As can be seen from FIG. 5, the web lifter 11 consists of a profile tube 12 which is approximately semicircular in cross section for receiving a rodless cylinder 13 . With the piston of this cylinder 13 , a knife carrier 14 is firmly connected, which protrudes from a slot 15 of the profile tube 12 and has a knife blade 16 at its free end. Compressed air can be blown outwards through a plurality of slots 17 provided in the profile tube 12 . The pivoting of the web lifter, for example from its position shown in FIG. 1 to that shown in FIG. 5, takes place via a sprocket 18 connected to a bearing ring 7 , which is connected via a chain 19 to the sprocket 20 of a geared motor 21 .

Coaxially next to the bearing rings 7 and 8 , further bearing rings 22 to 27 have been placed on the shaft 4 , which, like the bearing rings 7 and 8, carry freely pivotable lever arms 28 to 33 . With the ends of two lever arms, the cutter bar 34, 35 and 36 are firmly connected, of which the knife bars 34 and 35 near the actual diameter pressure rollers 34 'and 35' have, which are mounted between the lever arms 28, 33 and 30, 32 . All Mes serbalken 34 to 36 can be pivoted via piston-cylinder units 37 to 42 , wherein the piston-cylinder units 37 to 42 are connected to the side walls 1 and 2 of the machine frame via holders.

In particular, FIGS. 2 and 3 show that the frame side walls 1 and 2 offset circular recesses. In each of these recesses, a large ball bearing is firmly inserted, in each of which a turning plate 43 is rotatably mounted. All four turning disks 43 are each equipped with two linear guides 44 running parallel to one another. The two linear guides 44 of each turning disc 43 are embraced by U-för-shaped profile pieces 45 with play, wherein the two of a turning disc 43 associated U-shaped profile pieces 45 are fixedly connected to a bearing shield 46th With each bearing plate a motor 47 is screwed, which carries a sprocket 48 . This sprocket 48 is connected via a chain 49 to the drive sprocket 50 of the winding shaft 51 . They correspond to the winding shaft bearings 52 a , 52 b in the bearing plates 46 . 'Can then two opposite bearing plates 46 are moved on the linear guides 44 each have rodless piston and cylinder units 52' 52 '.

From Fig. 2 it is clear that the two upper piston cylinder units 52 'shown in Fig. 3' for the displacement of the winding shaft bearings 52 a and the two lower piston cylinder units 52 '' are provided for the displacement of the two winding shaft bearings 52 b . In the right half of Fig. 2, the piston-cylinder units 52 ', 52 ''is only hinted at Darge. However, it prevail here the same conditions as on the left side of Fig. 2. All piston-cylinder units 52 ', 52' 'are holder 53 fixed ver connected with the turning disks 43. Since the piston-cylinder units 52 ', 52 ''are pneumatically operated, care must be taken to ensure that when a winding shaft 51 is moved, synchronism is present so that the winding shaft 51 does not tilt. For this purpose, both the upper and the lower half of each turning disc encompassed 43 of a parallel guide chain 54 and 55, the upper parallel guide chain 54 passed over guide rollers 56 to the bearing plate 46 'and the lower parallel guide chain 55 passed over guide rollers 57 with the End shield 46 '' is firmly connected.

As shown in FIGS. 3 and 7 show a continuous shaft 58 is rotatably supported below the turning wheels 43, which has two of the 59 Sprockets. These two sprockets are connected to the two lower parallel guide chains 55 . In order to bridge the distance in the central area of the turning plates 43 between the upper chains 54 and the lower chains 55 , two chain pieces are placed on each turning plate 43 in the sem area, the ends 61 and 62 of which are firmly connected to the turning plates 43 . From Fig. 8 it is clear that the transition chain pieces 59 and 60 are next to the parallel guide chains 54 and 55 . In order to be able to bring both the transition chain pieces 59 and 60 and the parallel guide chains 54 and 55 into engagement with the chain wheel 59 , this is designed as a wide double chain wheel.

The turning disks 43 themselves are each equipped with an outer ring gear 63 . With the teeth of these sprockets each meshes with a gear 64 , of which only one gear 64 is shown in FIG. 3 Darge. The two two turning wheels 43 associated gear wheels 64 are connected by the turning wheel drive shaft 65 miteinan of and can be driven by the motor 66 which is fixedly connected to a frame side wall, and whose On drive shaft at the turning disc drive shaft 65 is flanged.

Corresponding to the width of the web to be wound up, winding sleeves 67 sit on the winding shaft. The pressure rollers 69 are assigned to those on these winding tubes 67 on material web rolls 68 to be wound, which are articulated via levers 70 on a rod 71 which is mounted in the frame side walls. The pressure rollers 69 are moved by pneumatic piston-cylinder units 72 .

Fig. 3 shows that each turning plate 43 has two Sperrenbol zen 73 , 74 which can engage in corresponding openings in the end plates 46 in order to be able to lock the movement of the end plates 46 against the turning plates 43 . This happens each time the two end shields 46 two blades 43 are in the middle position, which is shown in the left half of FIG. 1.

The operation of the device will be described in more detail below wrote:

Referring to FIG. 1, a broad continuous web of material is fed over a guide roll 75 76 of a longitudinal cutting device 77, by means of the NEN the wide web into two or more narrower Bah is severed. These narrower webs reach the contact roller 6 via a further deflection roller 78 . One of the two narrow webs of material is wound up on the left and the other on the right side of the device shown in Fig. 1. The left side shows an almost full web roll 68 , which is shifted by means of the upper piston cylinder units 52 'shown in FIGS . 2 and 3' together with the associated winding shaft 51 in the middle and locked there. For the material web roller 68 pushed in the middle, the bearing plate 46 is shown. In addition to these two end plates 46 carrying the web of material web 68 , the two turning plates 43 also carry two further end plates, which are not shown for the sake of simplicity. On the from these end shields gene winding shaft a winding sleeve 67 'is placed and clamped ver. This winding tube 67 'is covered with glue strips. The narrow web of material 75 'consequently runs over the contact roller 6 , the winding tube 67 ' to the web of material web 68 , to which the web is pressed via the support roller 69 . At this moment, the piston-cylinder units 37 and 40 are actuated, whereby the cutter bar 34 and the pressure roller 34 assigned to it are pivoted into the narrow material web 75 '. First, the pressure roller 34 'lies on the winding tube 67 ' and presses the new beginning of the web onto this glued winding tube 67 '. Then the cross cutting knife is operated to separate the web by means of a piston rodless cylinder and the web of material 75 'separated by. The pressure roller 34 assigned to the cutter bar 34 'presses the new beginning of the web onto the glued winding tube 67 ', so that a new web of material web is formed at this point, while the full web of web material 68 is then removed into the left outer end position by the method.

The right side of Fig. 1 shows a not yet finished ge wound web roll 68 ', on which the second narrow web part 75 ''runs. As soon as the roller 68 'is completely wound, the support roller 69 is pivoted to the film roll. The end shields 46 'are then moved to the right into the center of the two turning disks 43 and locked there. After the locking of the end shields 46 ', the Wendeschei ben 43 are pivoted counterclockwise by the drive motor 66 until the newly inserted winding sleeve 67 ''is in the winding position, in which the two linear guides 44 then run horizontally again. After this has been done, the cutter bar 35 is pivoted counterclockwise by the piston-cylinder units 38 and 42 , so that the material web 75 '' is cut and a new winding can be formed. In the position shown in FIG. 1, winding rolls are consequently formed continuously on both the left and the right side of the device without interrupting operation.

In the event that the web 75 is not to be severed and instead of two or more narrow webs only a single large web is to be wound up, this wide web is only wound up with the winding device shown on the left-hand side of FIG. 1. For this purpose, the support rollers are first pivoted onto the rollers. Then the end shields 46 'shown in FIG. 1 on the right-hand side are moved to the center of the turning disks 43 and locked there. Then the turning discs 43 are rotated by the drive motor 66 through 180 ° until the end shields 46 '' assume the position shown in Fig. 6 on the right side of the drawing. The winding shaft normally carried by the end shields 46 '' has, however, been removed beforehand in order to create a free passage for the separating knife 36 , which separates the narrow strip still running onto the material roll 68 '. The from the interface of the blade 36 to the full width of the web 75 remaining narrow web flaps 75 '' is from the narrow web portion 75 'entrained with the contact roller. 6

Once the uncut web 75 on the winding tube 67 ', whose width corresponds to the width of the uncut web 75, is attached running in front, the web so that by the cutter 34 75 cut through to the previously glued winding sleeve 67' are not divided in the longitudinal direction wide web 75 is wound up. While the right side of the device shown in FIG. 6 remains completely without function during further operation, web rolls are formed on the left side of the device without interruption, which correspond to the width of the material web 75 fed. The role change taking place on the left was previously described with reference to FIG. 1 and is known per se.

From this mode of operation shown in FIG. 6, in which a wide web is wound up on the left side of the device, the device according to the invention can be switched back to an mode of operation in both the left and the right side of the device without interruption for example, a narrow web is wound up. For this purpose, first of all, the drive motor 21 of the Bahnab lifter 11 is pivoted out of its basic position shown with dash-dotted lines into the position shown with solid lines. This situation is shown in Fig. 5. During the pivoting movement of the web lifter 11 , the bearing plate 46 '' is in a position remote from the contact roller 6 . Only when the web lifter 11 has assumed the position shown in FIGS . 4 and 5, the longitudinal cutting device 77 is brought into the operating position, whereby the web 75 is divided into two narrow webs 75 ', 75 ''. Then the bearing plate 46 '' move into the position shown in Fig. 4 on the linear guides 44 . On the previously in the bearing plate 46 '' inserted winding shaft 51 is a winding tube 67 '' sets up, which speaks ent the width of the narrow web to be wound up. The winding tube 67 '' presses the web 75 '' to the contact roller 6 , while the web 75 'is not detected by the winding tube 67 '', since the winding tube 67 ''and web 75 ''are congruent with each other with the same width.

Then the knife 16 of the web lifter is actuated and cuts only the web 75 '', but not the web 75 '.

Due to the fact that the winding tube 67 '' has been glued before its insertion gene, the web 75 '' is then wound onto the winding tube 67 '', while the web 75 'runs onto the material web roll 68 , which previously with a wide web 75 was wound. After this has happened, a roll change takes place on the left side of the device, ie the material web roll 68 is moved to the center of the turning disks 43 and locked there.

Then, the roll of material web 68 associated twisted two turning wheels via the motor 66 by 180 °, is pivoted whereby a new winding tube 67 'in the winding position. This position is shown on the left side of FIG. 2, only with the difference that in FIG. 2 the material web roll 68 is a narrowly wound roll.

Claims (13)

1. Device for winding a plurality of narrow material webs formed by slitting a wide material web to supply rolls
with guide rollers for the webs,
with knives for slitting the wide material web and
with winding devices with winding cores for the narrow material webs,
characterized,
that on both sides of a central, the narrow material webs diverging in their running direction guide roller in each by ben provided with rotary drives Wendeschei ben rotatably mounted in the machine frame bogie with two parallel winding axis to the guide roller are provided, the discs in guides of the turn with on a diameter line movable winding axes are guided parallel to themselves by drives,
that each of the two winding devices can be moved from an end region of the guides into the region of the center of the bogie and
that each of the respective moving at the inner end with approximately horizontal guides Wickeleinrich lines for role change is assigned a separating knife mounted in the machine frame swiveling bar with pressure roller, which cut through the narrow material webs and the separate front ends of the material webs on glued, the winding core forming sleeves o . Press on. 2. Device according to claim 1, characterized in that each roll moved to the center of the bogie facility with curse with the axis of rotation of the bogie tender winding axis can be blocked. 3. Device according to claim 1 or 2, characterized net that the central guide roller is a contact roller forms, to which the forming supply rolls during of winding are employed.   4. Device according to one of the preceding claims, characterized in that with a small, about constant distance between contact roller and Supply roll is wound (slit winding process). 5. Device according to one of the preceding claims, characterized in that in the machine frame via lever pivoted rollers are provided in front of each Procedure of the supply rolls, i.e. at the beginning of each Role change, adjustable to the supply rolls or on are pivotable so that the web runs sideways to prevent and trapping air after the procedure to avoid removal from the contact roller. 6. Device according to one of claims 1 to 5, characterized characterized in that the winding devices by pressure middle piston cylinder units move in their guides are cash. 7. Device according to one of claims 1 to 6, characterized characterized that opposite, in the guides movable, the winding devices with their drives load - bearing slides for synchronization with the ends of Concentrate in the edge area of the turning discs to the axis of rotation trical guides connected chains are that mesh with sprockets that are fixed on the frame Shafts are attached.   8. Device according to one of claims 1 to 7, characterized characterized in that the wide web of material lengthways cutting knife can be lifted from this and that on one side of the guide roller in the machine frame A knife is pivotally mounted, the one or more of a stock roll or more Cut supply rolls running narrow webs. 9. Device according to one of claims 1 to 8, characterized characterized in that in the machine frame coaxially with the guide or contact roller on swivel levers web lifter pivoting along their length gela is the one with only one of the narrow ones Sheeting separating knife is provided. 10. The device according to claim 9, characterized in that the separating knife of the web lifter only over the small neren wrap angle over the guide roller to the Winding device running narrow web or several cut narrow webs. 11. The device according to claim 9 or 10, characterized net that the curved sliding surface of the web lift with Perforations are provided for the discharge of compressed air. 12. Device according to one of claims 9 to 11, characterized characterized in that the cutting knife in a longitudinal slot the web lift is guided and moved through the Piston of a rodless cylinder is movable.   13. Device according to one of claims 1 to 12, characterized characterized in that the web lifter and / or the swivel knife mounted on bearing rings on the shaft of the bar Guide roller are pivotally mounted.