DE2015722A1 - Winding device - Google Patents

Description

Take-up device

The invention relates to rewinders, and more particularly those for winding webs of paper into rolls or spools.

In a known winding device, two winding drums are used each of which rotates around a horizontal axis, with the two drums side by side are arranged so that a core at the angle between the External surfaces of the drums can be and of the take-up drums is rotated so as to cause a web of paper initially connected to the core to be wound on the core. In such an arrangement the two act Take-up drums also as a support for the paper roll, the is built, and because of this fact, this arrangement has the disadvantage that the heavier the role, the more difficult it is the paper is wound more tightly and it is therefore very difficult to cover the entire diameter of the roll to be formed to control their strength.

109808/1206

Another known arrangement (US Pat. No. 2,355,318 or 3,383,064) addresses the problem mentioned in that the two winding drums are arranged one above the other and a separate support is provided for the core. With this arrangement, one no longer relies on the weight of the paper to hold the roll against the surfaces of the two take-up drums and therefore an additional means is provided for the core in the angle between the two take-up drum surfaces press ^. However, with such an arrangement there is the disadvantage that when two rolls are to be wound from a slit web, it is not possible to feed the two webs produced by the cut to their associated cores, one on each side of the pair of winders drums is, so that each ₁ along cut sheet between a pair of winding drums passes through before it reaches the associated core. The result of this is that the two reels that are wound up have different properties.

The invention provides a take-up device which obviates the last-mentioned difficulty by ensuring that the Uege, the two paths generated by the longitudinal cut run through, are approximately the same and that these tracks are subjected to approximately the same forces.

According to the invention, a winding device is provided which has at least three winding drums which

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form first and second angles, in the first and second Cores are pressed, the arrangement of the three take-up drum relative to one another is such that the Length cut sheet with reference to the take-up drums can be directed so that a first width of the longitudinally cut web can be fed to the first core between a first and a second of the three take-up drums and a second width of the indented web the second core can be fed between the second and the third of the three take-up drums, with supports for the two nuclei allow these to stand out from the two Angles to move away and towards these and means are provided to each of the cores in their associated angles to press.

Preferably the first and third take-up reel drums are pivotable, away from the core, after the paper roll up to a predetermined diameter is wound, so that afterwards each of the two rollers then only against the second winding drum is present.

The second take-up drum can have a larger diameter as having the first and third take-up drums · The three take-up drums are expedient to approximate each other aligned in a line, this line being inclined to the horizontal. A preferred arrangement is the three Take-up drums in an approximately vertical arrangement to each other · Alternatively, however, the three take-up drums also be arranged in a triangle.

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Each of the cores can be mounted on a Uagen that runs along of a Ueges is movable (e.g. slidable along

or nip / rails) to the angle / between a pair of the three winding drums or from this ueg, the Uagen having a drive connection with means (? .B. a hydraulic cylinder mounted on a fixed support) which pushes the Uagen towards the nip.

The means that press the Uagen towards the nip can have a swivel arm, one end of which is connected to a fixed swivel joint and the other end of which is connected directly or indirectly to the Uagen, the arm around the pivotable end by means of a hydraulic cylinder is pivotable. The Uagen may carry a first toothed link that meshes with a second toothed link that is from a fixed support is supported, the two Toothed links are movable relative to each other to cause the Uagen to the U-nip between the two Winding drums is driven towards or away from this. In such an arrangement, one of the links may be a rack and the other a pinion driven by a motor rotatable in order to bring about a relative longitudinal movement between the pinion and the rack. An alternative form is the Uagen is provided with a first rack and a second Rack is connected to a fixed support, whereby a pinion is arranged between the two racks in engagement with both, allowing movement of the pinion along the fixed second rack by a given amount L

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cause its longitudinal movement of 2L of the first rack will. In this latter form, the pinion is useful mounted on the end of a hydraulic cylinder so that it goes along the second fixed rack by actuation of the hydraulic cylinder can be moved.

In another variant, the Uagen has an engine that a gear that drives with a fixed rack is engaged, which is mounted on a fixed support

'. ■ - Ä

so that actuation of the motor causes the ~

Carriage for: the gap between the pair of take-up drums is moved towards or away from this. If desired, the Uagen may, however, carry a gear rack which in turn can be engaged with each of a plurality of driven gears ^J are arranged along the rack so that the rack and thus the Uagan of each gear is driven to the next adjacent gear in the next can to move the Uagen either towards or away from the gap between the two take-up drums. etc. A further possibility is the Uagsn with drive means for connecting, which have an endless belt / is fastened at its one strand of the Uagen, such that movement of the endless belt in one direction or opposite to a movement of the Uagens to the nip towards or caused by this way.

For a better understanding of the invention, flusführungabeispisle the same described with reference to the drawings, namely represent"

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Figure * schematically shows a first form of a winding device according to the invention,

Figure 2 schematically shows a second form of winding device according to the invention,

FIG. 3 shows an enlarged partial view of part of the winding device according to FIG. 2,

Figure 4 schematically shows a known winding device,

FIG. 5 schematically a part of the winding device according to FIG. 1,

FIGS. 6 to 12 schematically show various arrangements for supporting the cores in the devices according to FIG Figures 1, 2 and 3

Figure 1t

A roll of paper 1 is carried on a stand 2 and is to be rewound on a rewinder 3 according to the invention.

The winding device 3 consists essentially of three Take-up drums 4, 5 and 6, which are approximately in a vertical line relative to one another.

A first rail 7 leads into the gap between the take-up drums 4 and 5 and a second rail θ leads into the gap between the take-up drums 5 and 6. A first rack 9 is

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movable along the rail 7 and a second one 10 is movable along the rail 8, the first Uagen 9 carries a first core 11 and the second Uagen 10 one second core 12.

Dedern of Uagen 9 and 10 are assigned funds that are assigned to the be able to push the respective Uagen towards the respective roller gap * - ' new) which are retractable if the diameter of the Roll wound on the core increases »'Various Embodiments of these means are detailed shown in Figures 6 to 12 and will be described later *

Uenn the paper web leaves the Holle 1, it runs to idle roll 13 and then between the slitting knife 14, which the In this case, cut the web into two webs 1a or * 1b of smaller width. The slitting knives 14 are more conventional Education.

The two cut webs 1a and 1b then run between them the take-up drums 4 and 5, with the web .1a on the first Core 11 is added. The track Tb also runs around the Take-up drum 5 and then between the take-up drums 5 and 6 and is received on the second core 12. To this The cut webs 1a and 1b run at least between them a pair of take-up drums the associated core out of the gap between a pair of take-up drums. It does so in contrast to known winding devices that use only two winding drums which are arranged vertically to each other, wherein

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only one of the cut lanes, fall only to the cut ones Web are to be wound, can pass between the winding drums and only then approaches the associated core.

FIG. 4 shows schematically a winding device provided with additional drums of the kind used in those mentioned above Patents is known. In such a winding device are in turn provided to the cores 11 and 12, and one of the cut sheets 1b is made around the inner and smaller ones ^ Part χ of the circumference of the core 12 tensioned as a result of the gap, that between the core 12 and the zuei take-up drums 45 and 46 is formed, the drum 46 having a higher peripheral speed than the drum has 45. In contrast, the split web 1a becomes around the outer or larger Part y of the circumference of the core 11 is stretched. This difference in the distance over which the cut webs are stretched may be differences in the properties of the two from the cut Tracks 1a and 1b result in wound coils. at

Wk a two-drum arrangement of this known type it is not

Paths /
It is possible to run the cut / in such a way that they are both stretched over the distance χ or the distance y, ie one will always be stretched over the distance χ and the other over the distance y.

In the three-drum arrangement of Figure 1, however, which corresponds to the invention, and of which a part is shown on a larger scale in Figure 5, it is possible to cut

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To guide webs in such a way that they both (or all if there are more than two cut webs) are stretched over the same distances, ie they can both be fed via χ or via y. Spools formed on a take-up device according to the invention will therefore have rather consistent properties. The take-up drums 4 and 6 would have a higher peripheral speed than the drum 5 and this could be effected * using the arrangement _f as disclosed in German patent specification - (P.15 74 401.1).

When the webs 1a and 1b wind up on the cores 11 and 12, the cores are pushed away by the respective roller gaps between the take-up drums in the direction of arrows A and B; this movement is opposed, however, by the reaction force which is exerted by the means mentioned earlier and which are shown for the exemplary embodiments in FIGS. 6 to 12. These reactants _; can be precisely controlled so that the tension of the web wound in the respective reels can be precisely controlled.

To have the necessary strength in the center of the coils to be built - the bobbin is initially wound in contact with both wind-up drums, i.e. with the drums, 4, 5 ods ^ the drums 5, 6. Uenn, however, the coil to a predetermined Diameter is wound, then the required

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Lent strength can be achieved by further winding the spool on only one drum, i.e. drum 5. In this embodiment this is achieved by swinging of the drums 4 and 6 (which e.g. can be mounted in the manner explained above with reference to FIGS. 2 and 3) except Contact with the two coils in order to keep these two coils only in contact with the central drum 5.

Figures 2 and 3;

In this embodiment, those parts which correspond to those mentioned in the description of FIG. 1 _; provided with the same reference numerals. The three winding drums 4, 5 and 6 are arranged differently, though again approximately along a _line} but the line is compared to a vertical line greatly inclined.

On / apart from this other orientation of the. / wrap drums are the two take-up drums 4 and 6 of considerably smaller diameter than the take-up drum 5 and they are mounted on arms 37 and 44, the pivot axes of which are coaxial with the drum 5 so that they can be rotated, such as this is indicated by the arrow C in order to either engage the take-up drums 4 and 6 or disengage from them to bring the cores or the web that is wound on the cores, so that each of the cores either with a pair of take-up drums 4, 5 or 5, 6 can be engaged or alone with the take-up drum 5. (A single arm or Frame can be used instead of arms 37, 44 »)

$ 109808 / $ 120

Instead of being mounted on frames that can be moved along rails may be the cores 11 and 12 from the free ends of two Pairs of arms 38 and 39, respectively, are supported which are pivotable around fixed bearings 40 and 41, respectively, to enable that the cores 11 and 12 are moved in arcs towards and away from the drums 4, 5 or 5, 6, and to allow the wound bobbins to be lowered on a Uagen, a stand or the barrel bottom. The movement the arms 38 and 39 are controlled by hydraulic cylinders 42 and 43 respectively. These cylinders and bearings 40 and 41 become carried on tables 47, each of which is perpendicular to the machine Rails 48 are movable.

Since drums 4, 5 and 6 on arms 3? and 44 are mounted, they can be arranged so that the bobbins are kept in contact with both drums 4, 5 or 5, 6 (see figure, dashed lines) _# until the bobbins are built up to a predetermined diameter, as previously mentioned was, and at this point in time the drums 4 and 6 can then be brought out of contact with the coils (see solid lines in FIG. 3).

An automatic control system (not shown) could serve to keep the take-up drums 4 and 6 out of contact with the two coils to swing after the two coils up are built up to a predetermined diameter, so that afterwards the two bobbins only on the winding drum 5 '

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would be constructed from those previously described Establish.

Although only for one arrangement for the three take-up drums 4, 5 and 6 shown, other arrangements can also be used to get voted; for example, the three take-up drums 4 and 6 could be in an approximately triangular arrangement with respect to one another. In this case, the advantage can also be achieved, in contrast to a two-drum arrangement, that the cut- ™ n webs are fed to their respective cores passing between a pair of take-up drums so the previously mentioned x or. to achieve y-supply.

In the two embodiments described above, the drums 4, 5 and 6 preferably have a spiral groove in their Surfaces to allow air trapped between the paper and the drum surface to escape ietj and to cause the paper from the center of the fe drums is smoothed outwards.

The two parallel rails 7 or 8 (Figure 1) and arms

38, 39 (Figure 2) are adjustable with respect to each other to

take into account the width of the spool to be accommodated by them.

The rails 7, 8 are carried on support members 7a and 8a, respectively

and these support members are slidable on transverse support surfaces

7b, 8b. A movement of the links 7a, 8a on the surfaces 7b, 8b can be generated by means of any drive (not

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shown), e.g. by hydraulic cylinders or guide screws. The arrangement also allows the rails 7, 8 to move and members 7a, Ba across the machine without adding to their spacing change so as to change the lateral position of the coil to be formed relative to the rest of the device.

The arms 38, 39 (FIG. 2) can be moved in a corresponding manner transversely to the machine, the tables 47 sliding on rails 48, when performing such movements. The arms 38 and 39 (Figures 2 and 3) can be adjusted accordingly. '

Various arrangements for creating the aforementioned reaction force are now described with reference to the drawings β to 1.2, dieL..aJ, _JL.e Partial views on an enlarged scale of the second carriage., 10 and its associated rail 8 are.

Figure 6:,

On the carriage 10, a handlebar 15 is pivotable at one end, attached, while the other end of this handlebar is pivotable is connected to an arm 16. A corresponding handlebar 15 and an arm 16 are also on the other side of the car (not shown) and the two arms are in this way each one on one side of the rail 8. The lower ends the arms 16 are mounted on a cross shaft that is rotatable in .bager 18 so that the arms 16 move in the arch can, which is indicated by the double-headed arrow in FIG is. The handlebars 15 are used to compensate for the difference between the Arch bending of the outer ends of the arms 16 and the linear movement of the carriage 10 along the rail 8 to balance.

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A bending of the carriage 10 in the direction of arrow B takes place against the resistance of a hydraulic cylinder or several hydraulic cylinders 19 which act on the arm or arms 16. The hydraulic cylinder or cylinders 19 result in this way the reaction force holding the roll against the take-up drum or against the take-up drums.

A support table 49 is on rails 49a across the machine displaceable and thus allows the rail 8 to be arranged in the desired manner in the transverse direction, uie in the exemplary embodiment according to FIG. 1.

In this embodiment, the rail 8 is inclined downwards, ueg of the winding-up drums 5 and 6. A corresponding arrangement to that according to FIG. 6 would be with regard to the carriage 9 and the rail 7 to apply.

The mechanism described above could be modified so that the handlebar 15 could be fixed in relation to the arm 16 when the carriage is at the lower end of the rail 8 is located, so that a further pivoting movement of the arm 16 in the direction of arrow B would lift the carriage off the rail 8. The arm can then be swiveled over to Place the roll on a cart, stand, or the floor.

According to a further modification, the link 15 could be omitted and instead the arm 16 could be used directly

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work on Uagen 10. There would then be a sliding movement of the contact surfaces of 'Jagen 10 and Arm 16, which the Arc encounter of the arm compared to the linear movement of the Uagens 10 offsets.

Fiour 6A:

The arrangement according to this figure is a modification of that according to FIG. 6 and there is a Schuenkmoglichkeit for the rail 8 provided so that winding would be possible in which the ι The coil to be formed is in contact with the drums 5, 6 (when the winding starts and the core is in the Position 12a) or in contact with only the drum 5, as shown in solid lines ^ die, coils die is wound, point to the core 12 and the rail 8.

The big circle in broken lines gives the size of one complete bobbin, the core being in position 12b at the end of winding.

As shown in Figure 6A, the rail 8 is at the top of an i ([ Frame 50 held, which is mounted on a pivot bearing "51". The pivot bearing 51 is located at one end of a bearing " table 52 and at the other end of this table ^ Tst a Schuenklager 53 provided for a hydraulic cylinder 54; this cylinder has another end connected to the frame 50 via one Pivot bearing 55 connected. The hydraulic cylinder 54 can so be operated to tilt the frame 50 and thus the Bring splint 8 to any desired angle. Of the

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The range of motion of the frame 50 is preferably large enough to be able to serve for the unloading of complete bobbins, the frame 50 being tilted counter-clockwise in order to unload the bobbin, for example on a rack (not shown).

To an undesired movement of the arm 16 relative to Rail 8 to prevent uenn the angle of the latter changes, the lower pivot point of the arm 16 is at the point 55; and the hydraulic cylinder 19, also connected to the arm 16 as shown in Figure 6, is nit its other end pivotally connected to frame 50 at 56.

The table 52 is supported on two support rails 57 which allow transverse movement of the table and all parts carried by it, corresponding to the movement of the members 7a, 8a on the surfaces 7b, 8b (Figure 1).

Figure 7i

In this embodiment, the Uagen is 1ü with a first Rack 20 which can be engaged with a pinion 21 carried on the end of an arm 22, which is connected to a hydraulic cylinder 23. The pinion is also in mesh with a second fixed rack 24, so that for each movement path of the pinion 21 along the direction of the rail 8 relative to the second stationary Rack 24 a movement twice as large as the first

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Toothed rack 20 and thus the rack 10 along the rail 8 he follows. '

The hydraulic cylinder 23 supplies the reaction force against a movement of the carriage 10 away from the take-up drums 5 and 6. Again, uie in the arrangement according to FIG. 4, the Rail 8 inclined downwards, ueg from the winding-up drums 5 and 6 and this is also the case with the following arrangements, which will now be described with reference to FIGS.

Figure 8; ,

In this arrangement, the carriage 10 carries a hydraulic motor 25, which drives a pinion 26, which in turn is in mesh with a fixed rack 27 so that the motor 25 the necessary resistance to movement of the uagens 10 from the winding-up drums 5 and 6 ueg supplies.

Figure 9:

In this arrangement, the Uagen 10 is provided with a rack 28 which can be engaged one after the other a plurality of pinions 29> which are connected to one another via additional gears 30 are connected and are in drive connection with a hydraulic motor 31 * Uenn the Uagen 10 is now along the Tried to move rail 8 in the direction of arrow B, uird in this way its movement is resisted by the motor 31 via the pinion 29 and transmission gears 30 and so on

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the roll with the desired pressure against the winding-up drums 5 and 6 or pressed against the take-up drum 5 alone.

Flour 10t

In this embodiment, the bracket 10 is via a rod 32 is connected to a hydraulic cylinder 33, which supplies the necessary reaction force against a movement of the carriage 10 in the direction of arrow B.

Fiour 11t

In this embodiment, the Uagen 10 is endless Belt 34 connected, which is in drive connection via a drive roller 35 with a hydraulic motor 36, the the required reaction force against a flexion of the Uagens 10 along the rail Q in the direction of arrow B. supplies.

In all the embodiments according to FIGS. 7 to 11, the rail 8 and the associated mechanism can be pivotably mounted, for example on a mounting which corresponds to the frame 50 (FIG. 6A) in order to enable the winding to be effected by an engagement between the Spool and drum 5 alone, if so desired _; and to aid unloading of complete bobbins.

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Figure 12;

In this embodiment one is the one according to Figure 6 corresponding Arrangement used, the same reference numerals denoting the same file. In this embodiment, the rail θ is shortened compared to that according to FIG. 6. The beginning part of the coil is wound on) if, the Uagen 10 rests on the rail 8 and the coil is in contact with it two drums 4 and 5, but when a predetermined diameter is reached (which is less than the effective Length of the rail 8), the handlebar 15 is fixed so that a further arcuate movement of the arm 16 has the consequence that

to the
the coil / indicated arcuate Ueg follows. In this way, the bobbin on the core 12 will then move out of contact with the drum 6 and will only be wound up by the drum 5. In the case of the bobbin on the core 11, the drum 4 is swung out of contact with the bobbin, as shown in dashed lines, in order to enable the bobbin to follow the indicated arcuate path and then only be wound further on the central drum 5 *

In all embodiments of the invention described above the cores can extend over the entire length of the paper roll, which is wound, extend and protrude at the ends, or alternatively, each nucleus can only have two short Uellenstummel which are arranged at such a distance from one another that they overlap the edges of the web to be wound, so that in the finished paper roll the Uellenstummel partially in the ends of the roll protrude into it. '

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Claims (14)

Claims y. Winding device, characterized by at least three Winding drums, which form the first and second roller gaps, can be pushed into the first and zueite cores, the The arrangement of the three winding drums to one another is such that that the cut web can be guided along such a path in relation to the winding-up drums, that a first width of the cut web becomes the first Core between a first and a second of the three take-up drums and a wide width of the cut web to the second core between the two sides and the third of the three take-up drums can, with supports for the two cores are provided, which allow the Kei.te away from the Ualzenspalten and move towards these, and flictel are provided to the both cores to their respective! To press the nip. 2. Aufuickel-l / device according to A. claim 1, characterized in that that the first and third take-up drums are pivotable away from the core after the paper roll up to a predetermined one Diameter is wound, so that afterwards each of the two rollers only against the winding drum to the side is present. 3. AuPuickel device according to claim 2, characterized in that that the winding drum to the side has a larger diameter than the first and third take-up drums. 109808/1206 4. winding device according to one of claims 1 to 3, characterized in that the three drums are approximately in line with one another, i. e. that their axes approximate lie in one plane. 5. Winding device according to one of claims 1 to 4, characterized marked that each of the kernels on a Uagen ■ which is movable back and forth along a rail to the gap between a pair of take-up drums uon this gap, the Uagen being in drive connection "Sf with means that press the Uagen towards the mentioned Ualzenspalt. . < 6. Aufwicksl-l / orrichtung according to claim 5, characterized in that the means which press the Uagen towards the mentioned Ualzenspalt have a pivot arm, one end of which is hinged to a fixed pivot point and the other end is connected to the Uagen , whereby the arm can be moved around * its pivotably mounted end Λ by means of a hydraulic cylinder. 7. winding device according to claim 5, characterized in that that the Uagen carries a first toothed link which is in engagement with a second toothed link, that of a stationary one Brace is supported, the two toothed members being movable relative to each other to cause the Uagen is driven towards the Ualzenspalt or away from it. 109808 / 12Oi 8. winding device according to claim 7, characterized in that that one of the toothed links is a rack and the other is a pinion rotatable by means of a flotor. 9. winding device according to claim 5, characterized in that that the Uagen is provided with a first rack and a second rack is attached to the fixed support is, wherein a pinion is arranged between the two racks and is in engagement with both. 1/10. Winding device according to claim 9, characterized in that that the pinion is mounted on the end of a hydraulic cylinder so that it is operated along the second rack of the cylinder is movable. _u 11, winding device according to claim 7, characterized in that the Uagen carries a rack which can successively come into engagement with each of several driven gears which are arranged along the rail, so that the rack and thus the Uagen of each gear is movable to the next adjacent gear in succession in order to move the Uagen towards or away from the nip. 12. Winding device according to claim 5, characterized in that that the Uagen is connected with drive means that have an endless Have ribbon, attached to one strand of the Uagen is so that a movement of the belt in one way or another Riohtung causes the Uagen to or from the nip this way is moved. 109808/1208 13 »winding device according to one of claims 5 to 12, characterized in that the rail is pivotably mounted so as to enable 'that a paper roll, which is wound up uiTd, pressed against the drums, to engage two of the drums, or just one of the drums. 14. Aufuickel device according to claim 13, characterized in that the rail is carried by a pivotably mounted frame, a hydraulic cylinder being provided M in order to produce a pivoting movement of the frame. 109808/1208 e e rs e 11 e