EP0100462A2 - Web winding device - Google Patents

Abstract

A winding device is used to wind up single or multiple folded fabric sheets with two alternatively operated winders 13, 15, each of which has a deflection tube 62, 63 directly upstream. Each winder 13, 15 has two coaxially arranged winding holders 8 to 11, which clamp the facing edge of the cloth web and the facing end of the winding core when winding with collets.

Description

The invention relates to a winding device for webs with two winders, which are equipped with winding holders that can be attached to both sides of the web and are mounted together with an upstream deflecting element in an axially parallel manner on a rotatable console and can exchange their position by pivoting the console through 180 ° and alternately in a winding position a commenced winding are operated starting done by wrapping and in a waiting position a new roll, and with an independently supported by the console _T racing device on a web section between the be: acting the winders, and in which the web of the deflecting element in each degree of filling partially wrapping the resulting winding and then only being brought into contact with the resulting winding after this wrapping,

Such a winding device for plastic films is known from DE-AS 2 317 325, in which a tube as a winding core is clamped between the two winding holders of a winder, on which the plastic film is then wound. When winding, a pressure roller rests on the cut of the film web and presses it against the winding core until this cut sits firmly on the winding core. Such a pressure roller causes wrinkles in the winding in the case of webs which tend to form folds, as is the case in particular in the case of doubled and multilayered cloth webs, which are undesirable.

The object of the invention is to design a device of the type mentioned above so that even with manure to _F altenbil- sloping webs such wrinkles are avoided if possible, especially if flat coils are wound on winding cores brettchenförmige. In doing so, forced breaks at the start of a new winding should be shortened as much as possible.

The invention is characterized in that the web of material is guided tensioned between the winding holders of the winder in the waiting position and to the winder in the winding position.
that the winding supports are equipped with clamping elements, in that the winding support by axial displacement from a remote position adjacent the web, they in _W artestel- lung occupy the associated winder, are adjustable in an attached position in which the clamping elements together with the edge of the web of a grasp the inserted winding core and clamp it and take it in during winding, and
that an anti-rotation device is provided for each reel holder, with which the associated clamping elements are locked in the waiting position in a rotational position in which they are aligned with the plane of the web being passed.

At the start of a winding process, the material web is clamped only at its edges in the spread tension in which it is kept ready, the ends of the winding core being clamped at the same time. This maintains the tension, even in the individual layers of a doubled or multi-layered sheet, so that, as experience has shown, undesirable wrinkling can be avoided.

The invention will now be explained in more detail with reference to the accompanying drawing.

• Figur 1 eine Wickelvorrichtung, gesehen von vorn,
• Figur 2 die Ansicht gemäß dem Pfeil 2 aus Figur 1,
• Figur 3 den Schnitt gemäß dem Pfeil 3 aus Figur ₁,
• Figur 4 a bis c schematisch im Querschnitt je eine Tuchbahn,
• Figur 5 a bis c einige am Wickelvorgang beteiligte Teile der Vorrichtung in der Ansicht entsprechend Figur 3, und zwar
  • unter 5 a in einer ersten Funktionsstellung,
  • unter 5 b in einer zweiten Funktionsstellung und
  • unter 5 c in einer dritten Funktionsstellung,
• Figur 6 a bis c einen Wickelhalter im Schnitt gemäß Pfeil 6 aus Figur 2, und zwar
  • unter 6 a mit abgesetztem Spannkopf,
  • unter 6 b mit vorgeschobenem Spannkopf und
  • unter 6 c mit angesetztem Spannkopf,
• Figur 7 den vorderen Teil des einen Wickelhalters im Teilschnitt gemäß dem Pfeil 7 aus Figur 6 c,
• Figur 8 die Ansicht gemäß dem Pfeil 8 aus Figur 7, jedoch nur die rechte Hälfte, weil die linke Hälfte dazu spiegelsymmetrisch ist,
• Figur 9 im Schnitt gemäß Pfeil 9 aus Figur 8 das vordere Ende des Wickelhalters,
• Figur 10 eine Abänderung des Wickelhalters in der Darstellung entsprechend Figur 8,
• Figur 11 im Schnitt gemäß Pfeil 11 den.vorderen Teil des Wickelhalters aus Figur 10,
• Figur 12 eine weitere Abänderung des Wickelhalters in der Darstellung entsprechend Figur 8,
• Figur 13 im Schnitt gemäß Pfeil 13 aus Figur 12 das vordere Ende des Wickelhalters,
• Figur 14 die eine Umlenkrolle vergrößert aus Figur 2 herausgezeichnet und aufgebrochen, und
• Figur 15 eine abgeänderte Ausgestaltung der Umlenkrolle in Ansicht.

- The drawing shows:

• 1 shows a winding device, seen from the front,
• FIG. 2 shows the view according to arrow 2 from FIG. 1,
• FIG. 3 shows the section according to arrow 3 from FIG. ₁ ,
• FIG. 4 a to c schematically in cross-section a sheet of cloth,
• Figure 5 a to c some parts of the device involved in the winding process in the view corresponding to Figure 3, namely
  • under 5 a in a first functional position,
  • under 5 b in a second function position and
  • under 5 c in a third functional position,
• Figure 6 a to c a winding holder in section according to arrow 6 of Figure 2, namely
  • under 6 a with offset clamping head,
  • under 6 b with advanced clamping head and
  • under 6 c with attached clamping head,
• FIG. 7 shows the front part of a winding holder in partial section according to arrow 7 from FIG. 6 c,
• FIG. 8 shows the view according to arrow 8 from FIG. 7, but only the right half, because the left half is mirror-symmetrical to it,
• FIG. 9 in section according to arrow 9 from FIG. 8 the front end of the winding holder,
• 10 shows a modification of the winding holder in the illustration corresponding to FIG. 8,
• FIG. 11 in section according to arrow 11 the front part of the winding holder from FIG. 10,
• FIG. 12 shows a further modification of the winding holder in the illustration corresponding to FIG. 8,
• FIG. 13 in section according to arrow 13 from FIG. 12 the front end of the winding holder,
• 14 shows a deflection roller enlarged from FIG. 2 and broken open, and
• Figure 15 shows a modified configuration of the deflection roller in view.

In the drawing, 1 denotes the machine frame, on which a bracket shaft 5, which is rotatably mounted about the bracket axis 4, is mounted in two pivot bearings 2 and 3. Two brackets 6, 7 are mounted on the bracket shaft 5 so as to be longitudinally displaceable but torsionally rigid. The brackets can be moved on the bracket shaft 5 by rotating a handwheel which is mounted on the associated bracket and drives a pinion which engages in a rack which is fastened to the bracket shaft 5. For clarity, is shown only in Figure 5, the wheel ₃ for the console 8. 7 The rack is designated 39. The rack also serves as an anti-rotation device for the console on the console shaft 5. By moving the consoles, the device is adapted to different widths of the fabric sheet 16.

Are on the brackets four winding holders 8, 9, 10, stored 1 _1, of which the winding holders 8, 10 are arranged coaxially to the winder axis ₁ 2 and form the winder 13, while the winding holders 9 are disposed ₁ 1 coaxially to the winder axis 14 and form the winder 15. The winding holder 8, 9, 10, ₁₁ are arranged in mutually facing sides of the brackets 6, 7 in pairs facing each other. The fabric web 16 shown in FIGS. 5 a to 5 c extends between the winding holders. The fabric web 16 can be simple, as shown in FIG. 4 a; twice, ie doubled, as shown in Figure 4 b; doubled, ie fourfold, as shown in Figure 4 d; placed three times, as shown in Figure 4 c or placed several times. The longitudinal fold along the longitudinal folds 18 to 23 serves to wind a wider cloth web according to FIGS. 4 b, c and d onto a winder 25 which is less wide according to the double arrow 24 in order to facilitate storage.

The web of fabric 16 passes from the upstream machine ₁₇ - apart from the longitudinal folds - into the winding device without any creases and is to be wound up by the winding device to form windings corresponding to the winding 25 and the formation of additional new folds, poses and the like is to be avoided.

Drive motors 40, 41, 42, 43 assigned to the individual winding holders are used to drive the winders 13 and 15 and, as can be seen in FIGS. 2 and 3, are mounted on the respective console 6 and 7 in addition to the associated winding holders. Each winding holder is thus driven directly by the drive motor assigned to it. These drive motors drive clamping heads 44, 45, 46, 47 of the individual winding holders around the respective winding axis 12, 14 while rotating. The clamping heads 44, 45, 46, 47 are rotatably and longitudinally displaceable in the associated winding holder. To the longitudinal displacement of the individual winding holders are respectively associated hydraulic lift cylinders 50, 51, 52, 53, each mounted adjacent to the associated winding holder axis-parallel to this at the respective bracket 6 and 7, and via a respective Scubbügel, for example the _S chubbügel 56 on a push rod 57 of the relevant winding holder 10 act.

The winding holders 8, 9, 10, 11 are of identical design and are arranged mirror-symmetrically to the plane of symmetry 58, which is perpendicular to the plane of the drawing in FIG. 1. The _W ickelhalter a winder, that is, for example, the winding holders 9, 11 of the winder 15, are operated jointly and synchronously. It is not absolutely necessary but expedient to provide a device for synchronizing the rotary movement. For this purpose, a coupling shaft 60, which is rotatably mounted on both brackets axially parallel to the winding axis ₁ 4, is used for the winding holder 9, 1 _{1 and is connected in} a torsionally rigid manner to the two winding holders 9, 11. The corresponding coupling shaft for the winding holder 8, 10 is designated 61.

The drive gear 35 of the drive motor 4 ₁ meshes with a drive gear 36 of the winding holder 10. The drive gear 35 also meshes with a deflection gear 37, which is torsionally rigid but axially displaceable on the clutch shaft 6 ₁ . The opposite winding holder 8 of the same winder 15 is synchronized by the rotational movement of the coupling shaft 61, and thus also by that of the winding holder 10 Deflection gear 1 ₁ 4, which is torsionally rigid and axially displaceable on the coupling shaft 61 and meshes with the drive gear 115 of the drive motor 43.

The Kupplun ^g swellen 60, 61 extend beyond the maximum distance of the two brackets 6, 7 and are axially displaceable in these, the Längsverschiebung'der consoles along the _K onsolenwelle 5 not to interfere.

Coaxially to the coupling shafts 60, 61 are change pipes 62, 6 are arranged. ₃ each of these deflecting tubes, for example the deflecting tube 63, compare FIG. ₁ 4, consists of two tube sections 64, 65 which are telescopically placed one above the other in pairs and of which one tube section 64 is fastened to one bracket 7 and the other tube section 65 to the other bracket 6 _is. The deflection tube 63 formed by the tube sections can thereby be telescopically pulled apart and plugged together and thus follows the distance between the brackets 6, 7 in its length. The deflection tube 63 is provided on its circumference with projecting ribs 67, which extend obliquely to the side in the conveying direction according to arrow 70 from the plane of symmetry 58 and thus from the center of the fabric web 16. The ribs each extend only over those outer parts of the tube sections 64, 65 which do not overlap when telescopically pushed together. The ribs 67 are, based on the axial direction of the associated deflection axis 7 ₁ , narrower according to double arrow 73 than 1/10 of the width according to double arrow 74 of the spaces 75, 76 to the adjacent ribs. The ribs 67 are formed by two spirals 77, 78.

Instead of using a deflection tube, it is also sufficient to use a deflection rail that has a wrapping surface that is curved in the wrapping direction of the fabric web and that extends over the greatest wrapping angle that occurs. The ribs are advantageously provided, but can also be omitted.

The deflection tube 63 is not rotatable. In a modification, however, the deflection tube 63 can be rotatably mounted about the deflection axis 7 ₁ , it can be driven to rotate about this axis and can be coupled to the drive of the associated winder for this purpose.

The deflection tube 63 belongs to the winder 13. The deflection tube 6 ₂ , which is designed correspondingly to the deflection tube 63, belongs to the winder 15.

It is important that a deflecting tube 62, 63 or a deflecting element, as can be seen in FIGS. 3 and 5 a, is assigned to each of the winders and is arranged directly upwards of this associated winder. The deflection element is arranged in such a way that when the winding is filled to the maximum between the deflection element and the winding there is at least a tolerance distance 174 (see FIG. 5 a), so that the filled winding can rotate past the deflection element without problems. It is also important that the deflection element is arranged so far offset that the tightly drawn web of cloth wrapped around the deflection element with a wrap angle 79 with filled winding of at least ₁ 0 °, so that the cloth strip 16 even at the maximum ^g e-for bottled winding not undesirable from the Umienkelement takes off and flutters. If the winding is less filled, as can be seen from FIG. 5 a, a larger wrap angle 79 then results.

It is important that after the looping of the deflecting element, the fabric web 16 is only in contact with the resulting wrap. Following the deflecting element, the fabric web reaches the winding directly. It is wound up freely there and is not under the pressure load of a pressure roller, which loads from the outside on the winding being formed. Such a pressure roller would lead to undesirable wrinkling.

Above the cloth web 16, the winder ₁ 3, 15 upstream, a board magazine 80 is arranged, which is attached to the machine frame 1. The board magazine is ge with a stack of serving as winding cores 81 ge fills, of which the lowest board 82 in each case is released in the direction of arrow 84 with the aid of a distributor 83 assigned to the board magazine 80, whereupon the other boards move downward in the direction of arrow 85. The board magazine is adaptable to boards of different lengths according to the width of the fabric sheet 16 being processed.

The allocator 83 places the dispensed board on the then idle cloth web 16 between the two winder holders 9, _{11 of} the winder ₁₅ which is in the waiting position.

The Brettchernmagazin 80 is adaptable to different widths of the cloth web. For this purpose, the two magazine cheeks 86, 87 are fastened to cheek supports 31, 32 which can be displaced transversely. The cheek beam 31 is mounted on a slide rod 91 and on a parallel threaded spindle 90 in the direction of the console axis 4. To move the threaded spindle 90 is rotated with the hand crank 26. Threaded spindle 90 and slide rod 91 are mounted in end shields 28, 92 on the machine frame 1. The cheek carrier 32 is mounted accordingly. The associated hand crank is designated 27, the rod 89 and the threaded spindle 88.

Below the winder 13, 15, a separating device, generally designated 180, is arranged on a cross member ₁ 84. The cross member 184 is mounted on both sides of a hydraulic lifting cylinder ₁ 85, 186 adjustable in height on the machine frame 1. To the cross member 184 are on the cloth web width distributed rotatably drivable knife discs ₁ 87 disposed, whose circumference is in each case a polygon, and is formed as a cutting edge. The cutter discs ₁ 87, with their cutting a over the entire Tuchbahnoreite extending, horizontal, combined cutting edge, as indicated by the dash-dotted line ₁ 88 in FIG. 1 In the lower rest position shown in FIGS. 1 and 5, the separating device 180 is ineffective. To perform a separating cut, it is moved upward until it passes through the cloth web with its combined cutting edge 188 and cuts through its entire width. The separating device 180 is arranged that, as can be seen particularly well from FIG. 5 a, it is effective immediately downward of the winder _{15 which} is in the waiting position.

The configuration of the wich holder will now be described with reference to the winder holder 10.

In winder 101, a drive sleeve ₁ 13 in ball bearings 03 _1, 104 and a rotary sliding bearing ₁ 12 in the ball bearing ₁ 02 is rotatable but not longitudinally displaceably mounted. In the rotary sliding bearing 1 ₁ 2 and in the driving sleeve 113, the bearing tube ₁ 07 is mounted for longitudinal displacement. With 152 a guide wedge is designated, which forces the bearing tube 107 to follow the rotational movements of the driving sleeve 113. The drive gear 36 is fastened on the driving sleeve 113. In the bearing tube ₁ 07 there is a coupling element 121 which is longitudinally displaceably sliding. The push rod 154 of a sword 155 is mounted at the front end of the coupling element. The push rod ₁ 54 is flat and is longitudinally displaceable in a form-fitting longitudinal groove in the coupling element 121, and is supported to the rear on a compression spring 164. The longitudinal displacement is limited by an elongated hole 162 in the push rod 154 through which a pin ₁ 63 of the coupling element is inserted . The push rod 154 is torsionally securely guided in a slot 165 of the end face ₁ 40th In the rear end of the coupling element ₁ 21 is rotatably coupled in ball bearings 190, ₁ 91 secured against longitudinal displacement, the front tapered end of the push rod 57. With 192 a gap bearing is designated.

The clamping head 46 is fastened to the free end of the bearing tube 107. The clamping head is shown in FIG. 6 a in its retracted position, in which a wedge cam ₁ 03 serving as an anti-rotation device and fastened to the clamping head has fallen into a corresponding diametrically opposite receptacle ₁₁ 1 of the winder housing 101. As a result, the clamping head is non-rotatably fixed relative to the winder housing in its retracted position in an angular position defined by the receptacle 111.

The rotary movement of the clamping head about the winder axis ₁ 4 is coupled in via a slip clutch (not shown) and via the gear wheel 36. The slip clutch serves as compensation when the rotation lock of the wedge cam 108 engages when the rotary motion is running out. The drive motor is switched off by a pushbutton switch, not shown, when the wedge cam 108 is engaged.

A collet 130 is mounted in the clamping head with four clamping jaws, of which, however, only two clamping jaws ₁ 38, ₁₃ 9 are visible in FIG. 6. The other, not visible clamping jaws are arranged and formed mirror-symmetrically to the mirror symmetry plane 168 from FIG. 8 to the visible clamping jaws 138, 139. All jaws grip on a common level. When the anti-twist device has come in through the wedge cams ₁ 08, the collet stands so that it grips in the plane of the cloth web ₁ 6, as is the case for the winder 15 which is provided in FIG. 5 a.

The two clamping brackets 131, 132 of the collet 130 can be pivoted open and closed about the collet axes 133 and 129. In Figure 6 a and 6 b, the collet is open. In the open state, the two clamping brackets are pivoted against the sword 155 by the rollers 158, 159 under the pressure effect of compression springs ₁ 34, ₁ 35. The clamping jaws 138, 139 protrude from the end face 140 facing the cloth web 16 and can hold a board serving as a winding core, for example the board 82, together with the edge of the cloth web 16 and the sword 155 when the collet is attached. To compensate for tolerances with regard to the thickness of the board and the thickness of the fabric, the tensioning brackets 131, 132 consist of two parts which can be moved relative to one another and which are spring-loaded relative to one another by compression springs 160, 16 ₁ which are designed as plate springs.

The ickelkernhalter as _W serving sword ₁₅₅ consists not only from the push rod of the two brackets 176, 177 and the cross bar 173 and is formed flat. When extended, it does not extend all the way to the center of the sheet ₁₇ 9. The two-strap 176, 177 of the _S are guided tirnflä- space 140 in slots.

In the remote position shown in FIG. 6 a, the coupling element 121 with the sword ₁ 55 is completely withdrawn. The crossbar 178 abuts the end face 140 and has retracted the clamping head 46 and the bearing tube 107. All parts of the winding holder 10 are now, as shown in FIG. 6 a, outside the cloth web ₁ 6. The collets are aligned with the cloth web plane.

From the position shown in FIG. 6 a, the coupling element moves forward and with it the sword 155. At a section of the forward movement of the sword, stops ₁₅ 3, 166, which are fastened to the rear end of the brackets 176, ₁₇₇ , strike at the rear of the clamping head 46 - compare FIG. 7 - so that the clamping head must follow the further extension movement of the sword 155 until it finally reaches the position shown in FIG. 6 b, in which the further advance movement of the bearing blade 107 is limited because of a stop 120 of the lacar tube strikes against the rear edge of the driving sleeve ₁₁ 3. In this position, the sword 155 extends parallel to the cloth web over the now inserted board 32 not quite to the cloth web center ₁₇ 9 and the jaws 138, 139 ... are still open and embrace the edge of the cloth web 16, the edge of the Boards 82 and the two brackets 176, 177 of the sword 155. The bearing tube 107 and the sword 155 can no longer follow a further forward movement of the push rod 57. However, the coupling element ₁ 21 follows the feed movement and thereby the stationary sword pushes against the force of the compression spring 164 into the coupling element 121 until the bolt 163 limits this insertion movement. This end position is shown in Figure 6 c.

During the advance of the _S pannkopfes 46 from the position shown in Figure 6 a, however, the rotation of the securing Keilnockens 108 triggers recording 111. The chuck 46 retains the set by the twist-lock angle position until it in the set position according to FIG. 6 c has come and has clamped the edge of the cloth web 16, the heirloom 32 and the sword 155.

Shortly before reaching the end position, inclined surfaces ₁₅ 6, 157 meet the rollers 158, 159 at the front end of the coupling element 12 ₁ , which are attached to the rear end of the clamping brackets 131, 132, whereby the collet 130 is closed against the force of the compression springs 134, 135 becomes. The rollers 158, 159 fall while on the side faces of the coupling element 121, whereby the chuck is locked in its closed position and one end of the small plank to the conces- Hori ^g en cloth web edge 72, as shown in figure 6 c apparent holds and with the sword 155 bracketed. The clamping jaws 138, 139 clamp the bracket 176 and the other clamping jaws arranged in mirror symmetry to the same clamping head clamp the bracket ₁ 77 of the sword ₁ 55.

The rotary movement via the drive gear 36 is only engaged when the winding holder is in its attached position shown in FIG. 6 c. Then the bearing tube 107 rotates with the driving sleeve 113 and the clamping head, the collet and the sword with the bearing tube. The coupling element rotates with it, while the push rod 57 does not take part in the rotational movement, neither does the winder housing 101.

The operation of the device is as follows.

One of the machine 17 under tension and the longitudinally folded fabric web 16 first arrives in the tensioning device ₁ 70 with two deflection rollers 171, 172 and a dancer roller 173 effective in between in a loop, which compensates for irregularities in the belt transport by means of weight or spring loading and a uniform tensile stress Cloth web causes. The brackets are in the angular position as shown in FIG. 5 for the console 7, in which the winder 13 is in the winding position and the winder 15 is in the waiting position the winding holder 10 and 11 visible. The opposite ickelhalter _W are synchronously operated and are coaxial.

The cloth web 16 runs from the guide roller 172 between the _W ickelhaltern of the winder 13 through the return pipe 6 to _{the third} The cloth web wraps around the deflection tube 63 on the wrap angle 79 and is thereby stretched outwards by the ribs. From this deflecting tube, the fabric web 16 reaches the circumference of the roll, which is rotated in the direction of arrow 175 by the rotary movement of the tensioning heads of the roll 13 and thereby wound up. As soon as the winding 25 has reached the desired filling, this is determined by a sensor, which then stops the drive of the winder 13. The sensor is not shown, nor is the control line for the control functions triggered by the sensor. This also applies to all other sensors and control functions. Simultaneously with the stopping of the winder 13, the fabric feed on the machine 17 is switched off and the feed of a board 82 in the board magazine 80 is triggered. The board 82 thereby reaches the cloth web 16 between the tensioning heads of the winder 15. The tensioning heads of the winder 15 are, due to the anti-rotation, which is formed by the wedge cams ₁ 08 corresponding to the wedge cams, in an angular position in which they lie flat on the sheet of fabric 16 lying boards 82 can detect with the sheet of fabric 16. As soon as the board is pushed in, the tensioning heads of the winder _{15 are moved} from their offset position according to FIG. 6 a, which they had in the waiting position, into their attached position according to FIG. 6 c, in which the board is moved by the swords inserted from both sides, which correspond to the sword ₁₅₅ from FIGS. 6 and 7, is supported and is clamped on both sides together with the swords and the cloth edges. The swords extend under the cloth and stiffen when the board is wrapped. The swords can also replace the board when wrapping.

The _T uchbahnabschnitt between the winders 13 and ₁₅ is now clamped through the now scheduled collet of the winder _{15 °.} Now the separating device 180 is placed on this tensioned cloth web section, in which the cutting knives are set in rotation by the drive motor 132 and are moved upward in the direction of arrow 183 until they engage in the cloth web and cut through its entire width. If this has happened, then the separating device ₁ 80 returns to its starting position and the motor ₁ 82 can be switched off. It can also continue to run empty until the next cut.

Immediately after the separation, the winder ₁₅ begins its rotational movement in the direction of the arrow 200 and at the same time the cloth web feed in the machine _{17 is} switched on and the winder 15 begins to wind a new roll on the board 82. The console shaft 5 a pivoting movement through 180 ° in the direction of arrow 181, see Figure 5, at the end of the two winders 13 and ₁ 5 have exchanged their positions starts. The winders rotate about the winder axes in the same direction of rotation according to arrow 200 and arrow 175 as the brackets 6, 7 rotate about the console axis according to arrow 181. The same direction of rotation of the brackets on the one hand and the winder on the other hand favors the crease-free winding during the turning process of the brackets.

At the start of the pivoting movement of the console shaft 5, the winder 13 makes a few slow revolutions in the direction of the arrow 175 and in the process completely winds up the free cloth web 202 which has resulted from the separation process. Once this has been done, the winder 13 releases the filled roll 25 and lets it fall off by retracting the clamping heads with the swords into their offset position according to FIG. 6 a. At the end of the 180 ° swivel movement of the console shaft, the two winders 13, 15 have exchanged their position according to FIG. 5, the winder 15 winds the started winding completely in the winding position, which the winder 13 holds in FIG. 5, and the winder 13 sees in the waiting position, which the winder 15 holds in FIG. 5.

Instead of board-shaped winding cores, other winding cores can also be used, for example tubular ones. In this case, however, it is necessary to provide appropriately adapted collets. A correspondingly modified exemplary embodiment is explained with reference to FIGS. 10 and 11. In this embodiment, the sword corresponding to the sword 155 is missing and the collet 270 is only in one piece and has two clamping brackets 271, 272 with circularly curved clamping jaws 27 ₃ , the curvature of which is adapted to a tube piece 274 serving as a winding core. Instead of the sword, a centrally arranged winding core holder 280 is provided, which instead of the push rod 154 has a rod 282, on the free end of which a round clamping block 281 is attached. The tensioning block 281 moves into the interior of the tube piece 274 when the winding core holder 280 is extended. The rod 282, like the push rod 154, is mounted on the push rod 154 corresponding to the coupling element 121 on the coupling element 233 corresponding to the coupling element 121. On the end face ₁ 40 corresponding to the end face ₁ 40, a clamping mandrel 276 is fastened coaxially to the winder axis 275, which also paws into the tubular piece 274. When the winding core holder 230 moves back, the tensioning block 281 strikes the mandrel 276 and, like the Ouersteg 173, thereby takes the tensioning head back into the rotationally secured position.

According to another modification of the exemplary embodiment shown, the sword 155 and the swords corresponding to this of the other winding holders can be omitted if the shoe is a sufficiently rigid winding core. Parts of the clamping head of a corresponding exemplary embodiment are shown in FIGS. 12 and 13. In this embodiment, the sword is missing. Instead of this, instead of the bushing 176, 177, a circular bushing 240 is provided on both sides, through which a mandrel 242, which is parallel to the winder axis 14 and is longitudinally displaceable, projects in the clamping head 241. The mandrel 242 is under the load of a compression spring 243 can be pressed back into the Ianere of the clamping head by overcoming the restoring force of this compression spring 243. dan arettchek, the one who responds If there are holes in its end face, it is additionally held by the clamping mandrel 242 and the opposite, non-visible mandrel, which then engage in these blind holes when the clamping head is attached. If there are no blind holes, the mandrel 242 is not square and is pushed back by the board into the clamping head against the force of the spring 243.

The collet 244 with its return spring 245 and its tolerance spring 246 is otherwise designed in exactly the same way as the collet 130 from FIG. 6 and also mounted in the clamping head 241 just like this.

So that the clamping head 242 can perform an axial movement even when there is no sword, a driver 291 is mounted on the front end of the coupling piece 290 corresponding to the coupling element 121 and is fastened to the clamping head 241. The longitudinal displacement of the driver 291 with respect to the coupling element 290 is limited by a pickling corresponding to the bolt ₁ 63 with an associated longitudinal groove.

Instead of the deflection tubes 62, 63, other deflection tubes, such as the deflection tube 30C shown in FIG. 15, can also be used in devices in which the brackets 6, 7 cannot be adjusted in their spacing. This deflection tube is fastened between the fixed brackets 301, 302 and is looped by the cloth web 303. The deflection tube 300 has an increasingly thicker diameter toward the center 304, which corresponds to the cloth web rides. The two tube halves thus formed are coated with a rib-shaped rib 305, 306. The apiral windings extend mirror-symmetrically to one another, with such an incline that the spiral paths are inclined upwards in the direction of the cloth web advance according to arrow 307 and act on the cloth web stretching outwards.

Claims (10)

1.Wrapping device for webs with two winders, which are equipped with winding holders that can be attached to both sides of the web and are mounted axially parallel on a rotatable console together with an upstream deflecting element and can swap their position by swiveling the console by 180 ° and alternately starting in one winding position The winding is finished winding and a new winding is started in a waiting position and with a separating device mounted independently of the console, which acts on a web section between the two winders, and in which the web partially wraps around the deflecting element at every filling level of the resulting winding and then at this loop is only in contact with the resulting wrap,
characterized in that the fabric web ( ₁ 6) is passed tensioned between the winding holders (9, 11) of the winder ( ₁ 5) which is in the waiting position and to the winder (13) which is in the winding position,
that the winding holders (10 ...) are equipped with clamping elements ( ₁₃ 0 ....),
that the winder holders ( ₁ 0 ...) can be adjusted by moving them axially from a remote position next to the material web, which they occupy while the associated winder is in the waiting position, into a position in which the clamping elements (130) touch the edge of the material web (16) grasp and pinch together with an inserted winding core (82) and which they take up during winding, and
that for each winding holder (10 ...) an anti-rotation device (108, 111) is provided, with which the associated clamping elements (130) are locked in the waiting position in a rotational position in which they are aligned with the plane of the passing web (16) . _2nd Apparatus according to claim 1, characterized in that a separate drive motor (40, 41, 42, 43) is provided for each of the four winding holders (8, 9, ₁ 0, 1 ₁ ), which is attached to the associated console (6, 7 ) and that a device (61, 35, 37, 114, 115) is provided for the two winding holders of a winder (13, 15) for synchronizing the rotary movements of these two winding holders. 3. Device according to one of the preceding claims, characterized in that a winding holder (10) has a rotatable and longitudinally displaceable to the winder axis ( ₁ 4) within a winder housing (101) mounted clamping head (46) in which one or more collets ( ₁ 30 ) open and closable, the clamping jaws ( ₁ 38, ₁ 39) protrude from an end face (140) of the clamping head (46) facing the product web ( ₁ 6) and through a spring-loaded lever mechanism (131, 132) mounted within the clamping head are closed and locked when the clamping head is pushed forward to attach the winding holder and are opened when the clamping head is retracted to remove the winding holder. 4. The device according to claim 3, characterized in that the clamping head (46) is attached to the free end of a to the winder axis ( ₁ 4) coaxial bearing tube (107),
that the bearing tube (107) is mounted for longitudinal displacement and rotation in the winder housing (101),
that a coupling element (121) is rotatably and longitudinally displaceably mounted in the bearing tube (107),
that the push rod (57) of a lifting cylinder (57) assigned to the winding holder is connected to the end of the coupling element (12 ₁ ) facing away from the clamping head,
that a driver ( ₁ 55) under pressure load of a compression spring (164) with an elongated hole guide ( ₁ 62, 163) is connected to the coupling element (12 ₁ ) in a torsionally rigid manner and connected to the clamping head (46) in a torsionally rigid manner, and that the coupling element ( ₁ 2 ₁ ) at his the chuck ( ₄ 6) facing end has inclined surfaces (156, 157) which interact with the lever mechanism (131, 132) of the collets (130 ...) to actuate. 5. The device according to claim 3, ^* characterized in that a two-part winding core holder (155 ...) is provided, the shape of the winding core (32) is nestled and the two parts mirror-symmetrically in the two clamping heads (44, 46) one winder are adjustably mounted (13), distribution from a retracted from the area of the web ₍₁ 6) inoperative position which they occupy in contrasting clamping head (46) into an advanced active _S, which they assume when an attached clamping head (46) and in which each extend over part of the facing half of the web. 6. The device according to claim 3, 4 and 5, characterized in that a winding core holder (155) is designed as a driver, which is mounted on the end face (140) of the clamping head (46) longitudinally displaceable and a crossbar ( ₁ 78) at its free End which, in the retracted state, strikes this end face (140) and has two laterally arranged brackets (176, 177) which are guided through the clamping head (46) and have stops (153, 166) for the clamping head. 7. Device according to one of claims 3 to 6, characterized in that an anti-rotation device ( ₁ 08, ₁₁₁ ) between the clamping head (46) and the winder housing ( ₁ 0 ₁ ) is provided, which engages when the clamping head is retracted and then the clamping head in such The rotational position holds that the collets (130 ...), relative to the waiting position of the winding holder (46), are aligned with the level of the material web (16). 8. Device according to one of the preceding claims, characterized in that the deflecting element (62, 63) has a wrapping surface which is curved in the wrapping direction of the web (16) and which is provided with projecting ribs (67) which extend from the web center (58) starting in the conveying direction (70) obliquely to the side and extend, relative to the axial direction are narrower than _{1 /} 10th of the width of the gap (75, 90) to an adjacent rib. 9. Device according to one of the preceding claims, characterized in that a winding core magazine (80) is provided with a winding core allocator (83), each on the stationary web (16) has a winding core (8 ₂ ) between the winding holder (9, 11th ) of the winder (15) in the waiting position. ₁ 0. Device according to one of the preceding claims, in particular according to claim 2, characterized in that the brackets (6, 7) for adapting to different web widths on a to the bracket axis (4.) coaxial bracket shaft (5) are mounted torsionally rigid and longitudinally adjustable, and that the deflecting elements (62, 63) extending between the brackets are also adjustable in terms of their effective length.

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