DE102018205208A1 - Winding device with several winding shafts - Google Patents

Abstract

The invention relates to a winding device (101) having a plurality of winding shafts (105, 106, 107), with at least one support element (102) movable relative to a machine frame, on which the winding shafts (105, 106, 107) are arranged and at least one pressure roller ( 120) which is rotatably mounted in at least one bearing arm, and at least one support arm which carries the bearing arm, wherein at least a part of the bearing arm is movable relative to the support arm, wherein the support arm is movably mounted in the machine frame.
At least at least one positive guide element is provided, with which the movement of the bearing arm relative to the support arm in dependence on the position of the support arm relative to the machine frame is controllable.

Description

The invention relates to a winding device according to the preamble of claim 1 and a method for winding a roll according to the preamble of claim 8.

For winding a continuously fed material web, in particular plastic web, a roll change is required. For this purpose, an empty winding tube is brought to the track. Then, the web is severed and the newly created web start brought into contact with the new winding tube. Due to an adhesive effect, which can be caused for example by an adhesive tape, the web start adheres to the new winding tube, so that a new winding is formed. Both the new winding tube and the finished wound coils are located on winding shafts.

In so-called turret winder these two winding shafts are arranged on a support element which is movable relative to a machine frame. In practice, such a support element is designed as a revolving unit, for example as a hub or turnstile, and is rotatably mounted in the machine frame or a component thereof. As part of the change of the winding, the support unit is moved, so that the winding, which is currently being wound, is moved from the winding position and the new winding tube takes its place. Then, the winding change described above takes place. Often, the web is longitudinally separated into a plurality of sub-webs, so that a plurality of arranged in the axial direction of the winding shaft juxtaposed winding.

During the movement of the support member, it is often necessary to press the wound on the winding material web along the peripheral surface. During the winding process, a contact roller presses the material web onto the winding in the winding position, so that as little as possible or even a defined amount of air passes between the individual layers of the winding. During the movement of the support member, the contact roller is no longer in contact with the winding, so that an additional pressure roller takes on the task of the contact roller to avoid air entrapment. So that the pressure roller tracks the movement of the support element with a suitable movement, it is known from the prior art that the pressure roller is rotatably mounted in a bearing arm. This bearing arm is in turn carried by a support arm, wherein at least a part of the bearing arm is movable relative to the support arm. The support arm in turn is movably mounted in the machine frame.

In devices known from the prior art, however, there is the difficulty to make the pressure roller with a desired force to the winding and to maintain this force during the movement of the support member. The adjustment of the support arm and the bearing arm relative to each other is also complicated, since an actuator for this relative movement is necessary.

The object of the present invention is therefore to provide a winding device with a plurality of winding shafts, which overcomes the disadvantages mentioned above.

According to the invention this object is achieved by all features of claim 1. In the dependent claims, possible embodiments of the invention are given.

According to the present invention it is provided that at least one positive guide element is provided, with which the movement of the bearing arm relative to the support arm in dependence on the position of the support arm is controllable relative to the machine frame.

As a result of the movement of the support arm relative to the machine frame during the movement of the support element, the support arm continuously assumes different positions. For this purpose, the support arm can be arranged, for example, linearly displaceable, for example along rails and / or along a rotatable spindle, by means of a machine frame. In this case, the support arm assumes different, in this case lateral, positions during the movement. Alternatively, the support arm can also be arranged rotatable or pivotable by means of rotary or pivot bearings on the machine frame, wherein different angular positions are ingestible. A combination of a linear and a pivoting or rotating movement is conceivable. The positive guide element according to the invention now couples the movement of at least parts of the bearing arm to the movement of the support arm, wherein now the pressure roller follows a defined and fixed predetermined path. The movements described in the invention take place substantially orthogonal to the winding or winding shaft. A possible movement parallel to the axis of rotation of the coil is not relevant here.

In a further embodiment of the invention, a drive is provided with which the support arm is movable relative to the machine frame. In a simple embodiment, this is a piston-cylinder unit, for example a pneumatic cylinder, in particular a double-acting pneumatic cylinder. A piston-cylinder unit has the advantage of providing a force which is utilized can be pressed to the pressure roller to the winding. Alternatively, no drive is necessary, but only a force providing means, such as a resilient element, which acts on the support arm such that the bearing arm presses the pressure roller to the winding. This can also be accomplished by a piston-cylinder unit, such as a pneumatic cylinder. The actual movement of the support arm is then caused by movement of the support element. The power flow in this case extends from the support element via the winding, the pressure roller and the load arm in the direction of the support arm. This embodiment is mechanically very easy to plan and manufacture. For movement of the support arm and an electric motor may be provided which acts, for example via a spindle-spindle nut combination on the support arm. In this case, another power supply means may be available, which presses at least parts of the bearing arm and thus the pressure roller to the winding.

In a further advantageous embodiment of the invention, the positive guide element comprises a guide track, with which the movement of the bearing arm is controllable. Such a guideway may for example be a groove or a rail. A track that can be sensed by sensors can also be provided. Here is a path that can be magnetically, optically or electrically scanned. A guide track can alternatively also be stored as a data record in an electronic control device. Due to the current position of the support arm, the control device can then determine the corresponding position of the bearing arm and a drive which moves the bearing arm relative to the support arm, drive accordingly, so that due to the movement of the support arm is a fixed movement of the bearing arm. The guideway is preferably connected to the machine frame, in which also the support element is mounted. By providing a guideway results in a very easy controllable adjustment of the bearing arm relative to the support arm.

It is particularly advantageous if the positive guide element comprises a guided element which is movable along a guide track and with which the bearing arm is directly or indirectly connected. A guideway may be configured, as described in the preceding paragraph. The guided element thus follows the predetermined guideway and transmits the movement to the bearing arm. This applies in particular to the case in which the guideway and the guided element interact purely mechanically. For a guided element, which scans the guideway by means of a sensor, another drive may be necessary to apply the force necessary for the movement of the bearing arm. The guided element is in particular directly or indirectly connected to the bearing arm. In the first case, the guided element is attached directly to the bearing arm, in the second case, another component may be provided, such as a lever to transmit the actuating forces on the bearing arm.

Furthermore, the guided element can preferably be designed to fit the guideway. Thus, within a guideway designed as a groove, a sliding block or a roller run, which engage in the groove. On a designed as a rail track, a carriage can run, which can engage around the guideway U-shaped. But it can also be provided at least two rollers which engage the side of the guideway.

In addition, it is advantageous if the guided element and the support arm are coupled together. In this case, during the movement of the support arm, the guided element can also be movable relative to the machine frame. For this purpose, the guided element can be firmly or movably attached to the support arm. Another variant is that parts of the guided element engage in a positive guidance of the support arm. Another variant is that the support arm and the guided element are connected via a lever pivotally arranged on the support arm. A coupling can also be done electronically, wherein, for example, a rotary encoder can be provided on the support arm, whose data are given to the control device already described. In this case, the guided element is that component which transmits the travel paths to the bearing arm, for example the shaft of a position motor and / or a groove in which engages, for example, a threaded shaft of a position motor.

• - wenigstens ein relativ zu einem Maschinengestell bewegbares Tragelement, an welchem die Wickelwellen angeordnet sind, bewegt wird,
• - zumindest eine Anpresswalze, welche in wenigstens einem Lagerarm drehbar gelagert ist, an den Wickel angepresst wird,
• - zumindest ein Tragarm relativ zum Maschinengestell bewegt wird, wobei der Tragarm den Lagerarm trägt, wobei zumindest ein Teil des Lagerarms relativ zum Tragarm bewegt wird,

wobei sich das Verfahren dadurch vom Vorbekannten abhebt, dass mit zumindest einem Zwangsführungselement die Bewegung des Lagerarms relativ zum Tragarm in Abhängigkeit von der Position des Tragarms relativ zum Maschinengestell gesteuert wird.The above object is also achieved by a method for winding a roll in a winding device with a plurality of winding shafts according to claim 8, wherein

• at least one support element movable relative to a machine frame, on which the winding shafts are arranged, is moved,
• at least one pressure roller, which is rotatably mounted in at least one bearing arm, is pressed against the winding,
• at least one support arm is moved relative to the machine frame, the support arm carrying the support arm, wherein at least a part of the support arm is moved relative to the support arm,

wherein the method stands out from the known, that with at least one positive guide element, the movement of the bearing arm relative to the support arm in dependence on the position the support arm is controlled relative to the machine frame.

With this procedure, the same advantages are achieved, which have already been described in connection with the device according to the invention.

• 1 bis 4 Aufbau und Funktionsweise einer ersten Ausführungsform einer erfindungsgemäßen Wickeleinrichtung
• 5 bis 8 Aufbau und Funktionsweise einer zweiten Ausführungsform einer erfindungsgemäßen Wickeleinrichtung
• 9 Ansicht IX - IX aus 5

Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the figures, various embodiments are explained in detail. The features mentioned in the claims and in the description may each be essential to the invention individually or for any combination of mentioned features. Throughout the disclosure, features and details that are described in connection with the method according to the invention, of course, also in connection with the winding device according to the invention and in each case vice versa, so that with respect to the disclosure of the individual aspects of the invention always refer to each other or will be can. The individual figures show:

• 1 to 4 Structure and operation of a first embodiment of a winding device according to the invention
• 5 to 8th Structure and operation of a second embodiment of a winding device according to the invention
• 9 view IX - IX out 5

The 1 to 4 show a first embodiment of a winding device according to the invention 101 , This winding device comprises as a supporting part of a machine frame, of which a support frame 102 is visible, which for the sake of simplicity is shown as a rectangular plate, but in practice can assume any of the function-oriented design. In this support frame is rotatable about the axis of rotation 103 a rotation element 104 arranged, which in the 1 can be seen as a disc. In this rotation element 104 are about pivot bearing, which are not shown in detail, arranged several winding shafts. In the present example, there are three winding shafts 105 . 106 and 107 , As shown, these may be arranged on a circle with the center of the axis of rotation at a uniform distance from each other. The axes of rotation of the winding shafts are with 108 . 109 and 110 designated. The individual winding shafts are shown in different operating states. The winding shaft 107 is in an unloading position, with already finished rolls from the winding shaft 107 deducted. The winding shaft 105 is in a standby position in which she is using one or more cores 111 is equipped. The winding shaft 106 is in a winding position, wherein the winding shaft one or more winding tubes 112 is equipped and wherein the winding tube or the winding tubes, each with a web 113 is wound or has been wound and one or more reels 114 make up or form. Of course, the winding can also be wound without winding tubes. At the train 113 it is preferably a plastic film web, in particular a stretch film. But it can also be a paper web. For generating a plurality of parallel running webs, at least one longitudinal cutting element can be provided, so that several wound on the same winding tube winding are wound.

The train 113 is preferably via various guide rollers, which are not shown, the winding device 101 fed during winding through one or more contact rollers 115 to the respective winding 114 pressed, wherein the amount of air that is wrapped between the individual layers, can be controlled by the pressing force of the contact roller. In the 1 but is the contact roller 115 no longer in touching contact with the winding 114 , It has been removed from the reel or reels to prepare a so-called reel change. For this purpose, the contact roller is movably mounted on the machine frame, so that this relative to the machine frame and / or thus also relative to the winding shaft 106 is movable. The contact roller can be mounted in a pendulum arm, which is pivotable in the support frame 102 can be stored, arranged. But it can also be in sledges, which are movable along rails, be stored. In any case, a drive for the movement of the contact roller relative to the winding shaft is required.

The function of the contact roller 115 is during the winding change by the pressure roller 120 perceived, which could thus be referred to as auxiliary contact roller. The pressure roller 120 is therefore preferably applied to the winding before the contact roller 115 from the wrap 114 is moved away.

The pressure roller 120 is over a wide adjustment range relative to the support frame 102 movable, so that they wrap with 114 can remain in contact, as long as the winding in the unloading position, in the 1 through the winding shaft 107 is occupied, is moved.

This is the pressure roller 120 on a lever 121 rotatably mounted, via a positive guide, which in the present drawing as a curved path 122 is configured, is controlled with respect to its position relative to the machine frame. The curved path 122 can do this in the support frame 102 incorporated, for example milled be. Alternatively, the curved path 122 a separate component, such as a separate plate into which the curved path has been milled, this component is attached to the support frame.

The control of the lever is carried out in the embodiment of 1 by putting on the lever 121 a pen 123 , a roller or other curved track scanning element is attached. A movement of the pen 123 is achieved by having a component 124 parallel to the support frame 102 linear in the direction of the double arrow R is movable. Relative to the component 124 is the lever 121 in the direction of the double arrow S linearly movable. For this purpose, the component may for example be a tubular component or comprise another linear guide. To move in the direction R a drive is provided which, for example - as shown - as a piston-cylinder unit 125 is configured, wherein the cylinder is fixed to the machine frame and the piston, which is slidably mounted in the cylinder, on the component 124 is attached. The piston-cylinder unit is preferably operated with compressed air. The drive is also a spindle-spindle nut combination or about a linear motor. To a linear movement of the component 124 This can be done on a sled 126 be attached, which along a rail 127 can be stored displaceably.

In the 1 is now the cylinder of the piston-cylinder unit 125 with a force applied in the direction of the coil 114 acts. Due to the preferred pressurization with compressed air, the piston-cylinder unit acts like a resilient element. This will now also the pressure roller 120 to the wrap 114 pressed. By choosing the air pressure in the piston-cylinder unit, the force with which the pressure roller to the winding 114 pushes, set.

In the 2 Now the situation is shown in which the rotation element 104 for the purpose of winding change in the direction of the arrow D was filmed. The train 113 will continue on the contact roller 115 guided. The rotational movement of the rotary element is also a counter force on the pressure roller 120 exercised, so now the lever 121 due to the pen 123 and the curved path 122 exerted compulsive force not only in the direction R but also in the direction S is moved. By a suitable choice of the course of the curved path is thus ensured that the pressure roller 120 also during the rotation always in contact with the winding 114 stands. However, it is not crucial which angular position the pressure roller 120 relative to the wrap 114 occupies.

The 3 now represents the situation in the wrap 114 the unloading position and the new roll 111 has reached the winding position. It is also shown that the contact roller with the new winding 111 was contacted and then the train 113 was severed with a separator, not shown, so that the new web start was set to the new roll. The trailing end of the old railway section is still on the winding 114 wound up, the pressure roller 120 continue on the roll 114 is employed.

To now the pressure roller 120 from the wrap 114 The curved path can be removed 122 be formed at the lower end so that further movement of the lever 121 the winding also in the horizontal direction away from the winding. In this way, a removal device can now 130 from the bottom to the winding 114 move up unhindered to remove the wrap. This situation is in the 4 shown. After removal of the roll 114 can the pressure roller 120 be moved back to a standby position, so that the process described for changing the coil can be repeated.

The 5 to 8th show an analog winding change operation, wherein another embodiment of the winding device according to the invention 101 is used. Same components, already based on the 1 have been explained for the sake of clarity in the 5 to 8th not again provided with reference numerals.

In the 5 the situation is illustrated in which the winding 114 with still employed contact roller 115 by train 113 is wound. The pressure roller 120 is in a standby position. In the illustrated embodiment, the pressure roller 120 on a lever 201 rotatably arranged. The lever 201 is about a pivot bearing 202 swiveling on a swivel lever 203 hinged. The swivel lever 203 again, preferably via a pivot bearing 204 pivotable on the support frame 102 struck. To the pressure roller 120 To be able to press on a winding, is a drive, preferably the illustrated piston-cylinder unit 207 , intended. The cylinder of the piston-cylinder unit is via a pivot bearing 205 on the support frame 102 struck, whereas the piston of the piston-cylinder unit via a pivot bearing 206 on the pivot levers 203 is articulated.

So when the rotation element rotates 104 the contact of the pressure roller 120 with the winding is not lost, is a control of the angle of the lever 201 relative to the pivot lever 203 advantageous. For this purpose is a coupling rod 210 intended. This coupling rod 210 is rotatable with its first end to the lever 201 hinged. The control is done by making a curved path 211 is provided. The coupling rod 210 carries a pin at its second end 212 , a roller or another element that scans the cam track. By moving along the curved path 211 thus transfers the coupling rod 210 the course of this curved path 211 on the lever 201 , The required motive force is preferably obtained by the lever via the pivoting lever 203 , For this purpose, it is advantageous that the pivot lever is a slot 213 comprises, in which engages a coupling part arranged on the coupling rod. This attachment can be an extension of the pen 212 be. Another force-transmitting coupling of the coupling rod 210 to the pivot lever 203 can be provided. So is the pivot lever 203 moved by the piston-cylinder unit, the coupling rod moves simultaneously 210 with its second end along the curved path 211 , Consequently, the angle of the lever 201 relative to the pivot lever 203 depending on the current position of the pivot lever 203 , which is an angular position in this embodiment, relative to the support frame 102 set.

In the 6 is now shown that the pressure roller 120 already in contact with the winding 114 located, and the contact roller 115 has already been removed from the wrap. For adjusting the pressure roller 120 the piston-cylinder unit has been subjected to a force which is preferably generated via a compressed air supply and which points in the direction T. The pressure roller 120 thus presses with a defined force on the winding 114 ,

The 7 now shows the winding change, while the rotation element in the direction D is turned. This situation is analogous to 2 ,

The 8th shows the to 3 analogous situation, ie, the winding 114 is in the unloading position.

The 9 now shows a side view of the embodiment according to the 5 to 8th , It can be seen in the first place that essential components are present in duplicate in order to be able to provide, for example, a double-ended support of the winding shafts. On both sides of the winding device 101 is each a support frame 102 to recognize which are shown as representative of any components of a machine frame. Inside on the support frames 102 are the rotation elements 104 arranged, wherein by means of a dotted line, the axes of rotation 103 are shown. Between both rotation elements 104 extends the winding shaft 106 which have several juxtaposed wraps 114 wearing. Also a single wrap 114 is conceivable. The axes of rotation 109 are in turn drawn with dash-dotted lines. The other winding waves, the 1 to 8th were found in the 9 not shown.

The pressure roller 120 is shown as a one-piece roller, but it can also in several individual pressure rollers analogous to the coils 114 be divided. The pressure roller 120 is with her cones 220 in the levers 201 rotatably mounted. The levers 201 in turn are over the pivot bearings 202 , which are symbolized by dash-dotted lines, in the rocking levers 203 hinged. The swivel levers 203 are about pivot bearings 204 pivotable on the support frames 102 hinged. The drive of the swivel lever 203 is in the 9 not shown. Visible, however, is the pen 212 standing at the tie rod 210 is attached and reaches through to both sides. It is of course also possible, for example, to provide two pins at different positions. The end of the pen 212 that the pivot lever 203 facing, engages in the introduced in this slot 213 one. This is the coupling rod 210 when the pivot lever 203 is moved, moved. The second end of the pen 212 engages in the not visible here curved path 211 one in the plate 214 is introduced. This plate is on the support frame 102 attached. The curved path thus controls the movement of the pivoting lever 203 and the associated movement of the coupling rod, the movement of the lever 201 ,

With reference to the figures, two different embodiments have been presented, but have some similarities. Therefore, different features of both embodiments can be combined with each other, as far as it is technically possible and does not create a contradiction. This feature combinations of both embodiments are possible.

LIST OF REFERENCE NUMBERS

101

winding device

102

supporting frame

103

axis of rotation

104

rotating member

105

winding shaft

106

winding shaft

107

winding shaft

108

Rotary axis of the winding shaft

109

Rotary axis of the winding shaft

110

Rotary axis of the winding shaft

111

mandrel

112

mandrel

113

train

114

reel

115

contact roller

120

pressure roller

121

lever

122

cam track

123

pen

124

component

125

Piston-cylinder unit

126

carriage

127

rail

130

removal device

201

lever

202

pivot bearing

203

pivoting lever

204

pivot bearing

205

pivot bearing

206

pivot bearing

207

Piston-cylinder unit

210

coupling rod

211

cam track

212

pen

213

Long hole

220

spigot

D

arrow

R

double arrow

S

double arrow

Claims (8)

Winding device (101) with a plurality of winding shafts (105, 106, 107), with - at least one support element (102) which can be moved relative to a machine frame and on which the winding shafts (105, 106, 107) are arranged - at least one pressure roller (120), which is rotatably mounted in at least one bearing arm, - at least one support arm, which carries the bearing arm, wherein at least a part of the bearing arm is movable relative to the support arm, - wherein the support arm is movably mounted in the machine frame, characterized in that at least one positive guide element is provided with which the movement of the bearing arm relative to the support arm in dependence on the position of the support arm is controllable relative to the machine frame. Wrapping device after Claim 1 , characterized in that at least one drive is provided with which the support arm is movable relative to the machine frame. Winding device according to one of the preceding claims, characterized in that the support arm is pivotable relative to the machine frame, rotatable and / or linearly displaceable. Winding device according to one of the preceding claims, characterized in that the positive guide element comprises at least one guide track (113), with which the movement of the bearing arm is controllable. Winding device according to one of the preceding claims, characterized in that the positive guide element comprises at least one guided element which is movable along a guide track and with which the bearing arm is in particular connected directly or indirectly. Winding device according to one of the preceding claims, characterized in that the guided element is a roller, a sliding block or a carriage. Winding device according to one of the preceding claims, characterized in that the support arm and the guided element are coupled together so that upon movement of the support arm relative to the machine frame, the guided element is movable. Method for winding a roll in a winding device having a plurality of winding shafts, wherein - at least one support element (102) movable relative to a machine frame, on which the winding shafts (105, 106, 107) are arranged, is moved, - at least one pressure roll (20) which is rotatably mounted in at least one bearing arm is pressed against the winding, - at least one support arm is moved relative to the machine frame, wherein the support arm carries the bearing arm, wherein at least a part of the bearing arm is moved relative to the support arm, characterized in that at least one positive guide element, the movement of the bearing arm relative to the support arm in dependence on the position of the support arm is controlled relative to the machine frame.

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