EP4010132B1 - Winding machine - Google Patents

Description

The invention relates to a winding machine for winding and/or unwinding band or strip-shaped material according to the preamble of claim 1 and a method according to the preamble of claim 13.

Tape or strip-shaped material is used in industry for many purposes. For example, by punching the band or strip-shaped material, e.g. a metal strip, a wide variety of components can be produced, including for the electrical industry. The band or strip-shaped material is usually delivered on drums or pallets and must first be unwound from the drum or pallet for the punching process, for example. Accordingly, the reverse happens when the material is manufactured and the material is wound up. After production, the material is then wound onto a drum or pallet, for example, for transport to a customer.

Depending on whether the material needs to be wound or unwound onto a drum or a pallet, the drum is usually rotated around a horizontal axis or the pallet around a vertical axis so that the band or strip-shaped material is wound up or unwound can be. In the prior art there are devices which, for example, have a horizontal or a vertical axis of rotation and thus wind or unwind the band-shaped material.

From the DE 202 03 489 U1 a horizontal unwinder for unwinding band or strip-shaped material from at least one horizontally lying coil with a rotary drive and a guide device is known. A sensor device is provided for scanning the height of the coils and can be adjusted depending on the detected height. This means that the unwinder can be adjusted to the height of the material conveyed by the spool depending on the material used.

From the DE 36 87 229 T2 a feeding system for a strip to a production line is known, with the spool being arranged on a turntable or a turntable. The rotating unit is not pivotably mounted.

The prior art, in particular in the applicant's product portfolio, also discloses devices which have both possible applications ( pallet and drum) in realize a device (Leicht Stanzautomation GmbH, https://stanzautomation.de/de/maschinen/ptw-130, last access: June 30, 2020 ). In a pallet mode, the pallet is wound up and/or unwound with respect to a vertical axis using a turntable. By pivoting the turntable, it is possible to convert the device into a drum mode, so that a drum can be wound up and/or unwound around a horizontal axis. When changing between the two modes, the turntable is engaged or disengaged from a motor via a coupling device. Depending on the position of the turntable, however, the coupling elements of the claw clutch are positioned in such a way that they can "hook" when engaging or disengaging the coupling, causing wear and/or damage to the coupling elements. A manual alignment of the coupling elements with one another is therefore necessary.

Based on this prior art, the present invention is based on the object of providing a winding machine for winding and/or unwinding band or strip-shaped material, which enables the coupling process to be as simple, quick and wear-free as possible.

This object is achieved by a winding machine with the features of claim 1 and by a method with the features of claim 13.

Advantageous further training is the subject of the dependent patent claims. The features listed individually in the patent claims can be combined with one another in a technologically sensible manner and can be supplemented by explanatory facts from the description and by details from the figures, with further embodiment variants of the invention being shown.

The winding machine for winding and/or unwinding band- or strip-shaped material has at least one turntable, which is arranged on a swivel arm and can be driven via at least two identical coupling elements, with at least one coupling element being assigned to the turntable. In this context, strip-shaped material can be understood to mean metallic and non-metallic material, but also additional raw material or solid material, for example in the form of unpunched and/or unprocessed metal strips.

Winding the band-shaped material means both winding and unwinding of the material, ie the device can be used for both purposes become. In this context, opposite means that the coupling elements can engage with one another at least in a form-fitting and/or force-fitting manner.

The turntable can be moved between at least one disengaged state and at least one engaged state via a pivoting device, for example a piston-cylinder unit. The disengaged state corresponds, for example, to a drum mode and the engaged state corresponds, for example, to a pallet mode. The coupling elements can be positioned opposite one another in at least one coupling position by sensors, for example electrically and/or magnetically, by means of at least one sensor, which advantageously enables the coupling process to be as simple, quick and wear-free as possible. In principle, several coupling positions can also be provided. Without sensor positioning that is as precise and precise as possible, the coupling elements would collide with one another during the coupling process, tilt and wear out, so that the coupling elements and/or the machine could be damaged. The coupling elements would therefore first have to be manually aligned in a time-consuming manner, which can result in inaccurate and imprecise alignment, so that the coupling elements could still tilt despite the manual alignment.

In order to carry out positioning as quickly, accurately and precisely as possible and to ensure a secure coupling when the coupling element is rotated, the coupling element can preferably be positioned in the coupling position with at least one first sensor, for example an electrical and/or magnetic sensor. For example, it is conceivable that in the disengaged state a coupling element is fixed, e.g. the coupling element that is assigned to the turntable, but the other coupling element can still be rotated. In order to move the two coupling elements into an opposite position relative to the coupling, the first sensor detects the position of the coupling element, which can still be rotated, and, if the coupling element is not already in the coupling position, causes the coupling element to be brought into the coupling position is, for example, by a position sensor such as a motor. If, for example, the coupling element were to shift during the pivoting process of the turntable, the sensor would register this and position the coupling element accordingly.

For example, during the pivoting movement of the turntable when transferring between the disengaged state and the engaged state, it can happen that the Turntable and/or at least one coupling element rotate due to the movement, so that at least one coupling element is no longer in the coupling position. For example, during the pivoting movement of the turntable, the coupling element, which is assigned to the turntable, can rotate. In order to advantageously prevent the coupling elements from slipping during the pivoting process of the turntable, at least one coupling element can preferably be fixed in the coupling position. In principle, however, it is also conceivable that individual or all coupling elements can be fixed.

Preferably, at least one fixing device, e.g. a linear swivel clamp, is provided, which fixes the coupling element in the coupling position in the disengaged state. This advantageously ensures simple, quick and secure fixation. For example, the fixing device fixes the coupling element, which is assigned to the turntable. In principle, it is also conceivable that the fixing device fixes individual coupling elements or all coupling elements and that several fixing devices are provided for the respective coupling elements.

For an advantageously quick, accurate and precise positioning of the coupling elements as well as for a secure fixation, at least one second sensor, for example an electrical and/or magnetic sensor, is preferably provided, which detects the position of the coupling element, for example the coupling element which is assigned to the turntable. This ensures that both coupling elements can be positioned in opposite positions to one another and, for example, that the pivoting process of the turntable only starts after the second sensor has detected the correct position. Preferably, the coupling element, which is assigned to the turntable, can be positioned in the coupling position with the aid of the second sensor. For example, the positioning can take place via another position sensor, e.g. a second motor, or via the position sensor.

For an advantageous space-saving design, the fixing device is preferably arranged on or in the swivel arm.

Advantageously for a stable and secure fixation of the coupling element, the fixing device preferably has at least one component which, in the fixed state, interacts with at least one counterpart which is assigned to the turntable. For example, the component can be designed as a conical component and the counterpart as a conical counterpart. In principle, however, other versions are also conceivable, for example as a hook and eye. More preferably, for example, the fixing device can be designed as a linear swivel clamp with a conical component, the component pivoting, for example, by 90° when actuated and then retracting into the conical counterpart and thus fixing the turntable and the coupling element.

So that the pivoting movement of the turntable does not take place before the coupling element is correctly fixed, and in order to advantageously ensure secure fixation, in a preferred embodiment at least a third sensor, for example an electrical and / or magnetic sensor, is provided, which determines the state of fixation -Device determined. For example, the sensor can register as soon as the component has moved into its counterpart. For example, it is possible for the respective state to be determined via contact between the components, electronically, magnetically and/or via a corresponding force that the component exerts on the counterpart.

In order to advantageously obtain the simplest and most effective coupling possible, one coupling element preferably has at least one molding and the other coupling element has at least one recess, which engage in a form-fitting manner when engaged. In principle, it is also conceivable that the coupling elements engage with one another in a form-fitting and/or force-fitting manner when the clutch is engaged.

When transferring the turntable between the engaged and disengaged states, it can happen that the two coupling elements are pressed against each other. For example, when disengaging, it can happen that the coupling elements are in the opposite position in the coupling position, but can still tilt due to a pivot angle. In order to advantageously prevent damage to the coupling elements during the coupling process, the alignment of the formation and the recess in the coupling position preferably runs essentially along the plane spanned by the pivoting movement of the pivoting device and/or parallel thereto. The pivot axis around which the pivoting movement of the turntable takes place is therefore at right angles to the orientation of the formation or the recess.

In order to advantageously ensure that the fixation of the coupling element takes place before the pivoting movement, the pivoting device is preferably designed as a lifting-pivoting device, preferably designed as a piston-cylinder unit, with the lifting movement in particular being set up to support the fixing device on the turntable actuate. For example, when transferring from the engaged to the disengaged state, the fixing device is first actuated by means of the lifting-pivoting device, so that the turntable and the coupling element, which is assigned to the turntable, are fixed before the pivoting movement of the turntable is carried out. This advantageously ensures that the coupling elements are fixed before the pivoting movement of the turntable and cannot slip during the movement.

In order to advantageously carry out various winding and/or unwinding processes, the winding machine is preferably set up in at least one disengaged state for operation with a drum rotating around a horizontal axis and in at least one engaged state for operation with a pallet rotating around a vertical axis furnished.

A drive device is preferably provided which drives the drum rotating around the horizontal axis both in the disengaged state and the pallet rotating around the vertical axis in the engaged state. This advantageously results in a space-saving drive option for driving both modes.

The task is also solved by a method with the features of claim 13. For an advantageously simple, quick and wear-free transfer of a turntable of a winding machine between at least one engaged state and at least one disengaged state, at least one coupling element of at least two coupling elements is sensorically positioned opposite one another in a coupling position. The turntable is then swiveled.

To ensure that the coupling elements do not slip during the pivoting movement of the turntable and are not released from the coupling position, at least one coupling element is preferably fixed. The coupling element, which is assigned to the turntable, is preferably fixed. In principle, it is also conceivable to fix individual or all coupling elements.

In order to advantageously ensure that the coupling element is in the coupling position and is fixed in this position before the pivoting movement of the turntable is carried out, the state of the fixing device is preferably determined.

More preferably, the turntable is only pivoted when certain criteria are met, which advantageously increases safety: The coupling elements are in the coupling position, with the positions of sensors being checked and, if necessary, position sensors bringing the coupling elements into position. At least one coupling element, preferably the coupling element, which is assigned to the turntable, is fixed.

Further advantages result from the subclaims and the following description of a preferred exemplary embodiment. The features listed individually in the patent claims can be combined with one another in a technologically sensible manner and can be supplemented by explanatory facts from the description and by details from the figures, with further embodiment variants of the invention being shown.

Fig. 1

eine Wickelmaschine im eingekuppelten Zustand (Palettenmodus),

Fig. 2

eine Wickelmaschine im ausgekuppelten Zustand (Trommelmodus),

Fig. 3

eine Antriebsvorrichtung der Wickelmaschine,

Fig. 4

die Wickelmaschine im ausgekuppelten Zustand gemäß Fig. 2 ohne Trommel,

Fig. 5

einen Detailausschnitt gemäß Fig. 3 im ausgekuppelten Zustand,

Fig. 6

eine Detailansicht eines Kupplungselements in Kupplungsposition gemäß Fig. 5,

Fig. 7

eine Detailansicht eines Kupplungselements in Kupplungsposition gemäß Fig. 5,

Fig. 8, 9

Detailansichten der Kupplungselemente im eingekuppelten Zustand,

Fig. 10-12

Außen- und Innenansichten des Schwenkarms mit Fixierungs-Vorrichtung in verschiedenen Stellungen,

Fig. 13, 14

die Fixierungs-Vorrichtung mit geschwenktem Bauteil,

Fig. 15, 16

die Fixierungs-Vorrichtung im fixierten Zustand,

The invention is explained in more detail below using an exemplary embodiment shown in the attached figures. Show it:

Fig. 1

a wrapping machine in the engaged state (pallet mode),

Fig. 2

a winding machine in the disengaged state (drum mode),

Fig. 3

a drive device of the winding machine,

Fig. 4

the winding machine in the disengaged state Fig. 2 without drum,

Fig. 5

a detailed section according to Fig. 3 in the disengaged state,

Fig. 6

a detailed view of a coupling element in the coupling position Fig. 5 ,

Fig. 7

a detailed view of a coupling element in the coupling position Fig. 5 ,

Fig. 8, 9

Detailed views of the coupling elements in the engaged state,

Fig. 10-12

External and internal views of the swivel arm with fixing device in different positions,

Fig. 13, 14

the fixing device with a pivoted component,

Fig. 15, 16

the fixation device in the fixed state,

Detailed description of preferred embodiments

The invention will now be explained in more detail by way of example with reference to the accompanying drawings. However, the exemplary embodiments are examples that are not intended to limit the inventive concept to a specific arrangement.
Before the invention is described in detail, it should be noted that it is not limited to the respective components of the device or the respective process steps as these components and procedures may vary. The terms used herein are intended solely to describe particular embodiments and are not used in a limiting sense. Furthermore, if the singular or indefinite articles are used in the description or in the claims, this also refers to the plurality of these elements, unless the overall context clearly indicates otherwise.

In Fig. 1 a winding machine 10 for winding and/or unwinding band or strip-shaped material 12 is shown. The material 12 is on a pallet 14, which stands on a turntable 16. The turntable 16 can rotate about a vertical axis so that the band-shaped material 12 can be wound up and/or unwound. The winding machine 10 is located in Fig. 1 in an engaged state, the so-called pallet mode.

In Fig. 2 A so-called drum mode is shown. The winding machine 10 is located in Fig. 2 in a disengaged state. To switch the wrapping machine 10 from pallet mode to Fig. 1 into drum mode Fig. 2 or to transfer from the drum back to the pallet mode, the turntable 16, which is arranged on a swivel arm 24, is pivoted. A drum 28 can be placed on rollers 18, with the drum 28 rotating about a horizontal axis due to the rotation of the rollers 18 so that the band or strip-shaped material can be wound up and/or unwound.

In Fig. 3 a drive device 48 is shown. The rollers 18 are driven via a transmission 26, for example a belt transmission, which in turn is connected to a position sensor, for example a motor. The gear 26 is connected to a shaft 34, which drives a coupling element 22, for example a driver. When engaged, the position sensor drives the shaft 34 via the gear 26 and thus the turntable 16 via the coupling elements. When disengaged, the position sensor drives the rollers 18 via the gear 26.

A matching coupling element 20 is according to Fig. 4 assigned to the turntable 16, so that the turntable 16 can be driven in the engaged state of the coupling elements 20, 22. Via a pivoting device 30, which can be designed, for example, as a piston-cylinder unit, the turntable 16 can switch between at least the disengaged state, for example according to Fig. 2 and 4 and at least according to the engaged state Fig. 1 and 3 be transferred.

In Fig. 5 the coupling elements 20, 22 can be positioned opposite one another by sensors in a coupling position. In principle, however, several coupling positions can also be provided, for example in the exemplary embodiment corresponding to different angular positions of the coupling elements. When pivoting the turntable 16 by means of the pivoting device 30, this advantageously results in an exact coupling of the coupling elements 20, 22, so that the coupling elements 20, 22 do not tilt and therefore do not wear or at least wear less. The turntable 16 is in the disengaged state according to this Fig. 5 in the engaged state, for example according to Fig. 3 transferred by means of the pivoting device 30. For this purpose, the pivoting device 30 moves the pivot arm 24 and thus the turntable 16 and the coupling element 20.

The coupling element 20 is preferably on the turntable 16 in Fig. 5 fixed in the coupling position, so that the coupling element 20 cannot move into another position during the pivoting process of the turntable 16. Advantageously, the coupling elements 20, 22 remain in the opposite position to one another so that they cannot tilt during the coupling process and thus be damaged.

According to Fig. 5 the coupling element 22 can preferably be positioned in the coupling position with the aid of at least one first sensor 32. The sensor 32 is preferably arranged in the vicinity of the coupling element 22 and determines the position of the coupling element 22. If the coupling element 22 is not in the correct opposite coupling position, the coupling element 22 is preferably by means of the shaft 34 driven by the position transmitter via the gear 26 into the coupling position Fig. 6 brought. Afterwards you can, according to Fig. 7 to 9 the coupling element 20 can be coupled in opposite directions to the coupling element 22 by a pivoting movement of the turntable 16.

In a preferred embodiment, according to Fig. 10 to 16 a fixing device 38, for example a linear swivel clamp, is provided, which fixes the coupling element 20 in the coupling position in the disengaged state.

In a further preferred embodiment according to Fig. 10 to 16 At least one second sensor 36 is provided, which detects the position of the coupling element 20. The sensor 36 is in the exemplary embodiments according to Fig. 10 to 16 preferably arranged on the swivel arm 24 and detects the position of the turntable 16. In principle, the sensor can 36 can also be arranged on the turntable 16 and, for example, detect the position of the pivot arm 24. Furthermore, it is conceivable that the coupling element 20 can be positioned into the coupling position with the sensor 36, for example via a second position sensor.

In Fig. 10 to 16 the fixing device 38 is preferably arranged in the swivel arm 24. In principle, the fixing device 38 can be arranged, for example, on the swivel arm 24 or on the turntable 16.

In a further preferred embodiment according to Fig. 11 to 16 the fixing device 38 has at least one component 40, for example a conical component, which in the fixed state interacts with at least one counterpart 42, for example a conical counterpart, which is assigned to the turntable 16. If the fixing device 38 is actuated, the component 40 preferably pivots by, for example, 90° and then moves into the counterpart 42.

In a further exemplary embodiment, at least one third sensor is provided, which determines the state of the fixing device 38. For example, it is conceivable that the third sensor is arranged on or in the fixing device 38. However, other embodiments are also conceivable, as long as the third sensor determines the state of the fixation device 38. It is conceivable that as long as the sensor does not signal that the fixing device 38 is in the fixed state, a pivoting movement of the turntable 16 cannot be carried out.

The coupling element 22 preferably has at least one molding 44 and the coupling element 20 has at least one recess 46 Fig. 6 to 9 which interlock positively when engaged. In principle, the coupling elements 20, 22 can mesh with one another in a form-fitting and/or force-fitting manner. In principle, other shapes of the coupling elements 20, 22 are also conceivable, as long as they mesh with one another in a positive and/or non-positive manner.

In a further exemplary embodiment according to Fig. 5 The alignment of the formation 44 and the recess 46 in the coupling position runs essentially along the plane spanned by the pivoting movement of the pivoting device 30 and/or parallel thereto. The formation 44 runs in Fig. 5 essentially along the pivoting path of the pivoting device 30, the recess 46 of the coupling element 20 also running in this direction. In other words, the formation 44 lies in the recess 46 and the pivoting movement of the pivoting device 30 in one plane or the pivoting axis of the pivoting movement of the pivoting device 30 is at right angles to the orientation direction of the formation 44 and the recess 46. For example, if the formation 44 and the recess 46 run in another opposite position to each other, the coupling elements 20, 22 could tilt during the coupling process due to the pivot angle and thus be damaged.

In a further preferred embodiment according to Fig. 10 to 16 the pivoting device 30 is a lifting-pivoting device, preferably designed as a piston-cylinder unit, with the lifting movement in particular being set up and used to actuate the fixing device 38 on the turntable 16. For example, to transfer the winding machine 10 from the pallet to the drum mode, the lifting-pivoting device 30 is first actuated, with the lifting movement preferably actuating the fixing device 38. If the fixing device is in the fixed state according to the third sensor, only then does the pivoting movement of the turntable 16 take place.

For example, if the winding machine 10 is transferred from the drum mode back to the pallet mode, the coupling element 22, if it is not in the coupling position, is first brought into the coupling position. The sensor 32 preferably detects the position of the coupling element 22 and preferably causes the position transmitter to align the coupling element 22 accordingly if the coupling element 22 is not in the corresponding position. The sensor 36 preferably detects the position of the coupling element 20 or the turntable 16. In the drum mode, however, the turntable 16 should already be in position since it has already been previously fixed with the fixing device 38. The fixing device 38 should also be locked. This is determined by the third sensor. If all coupling elements 20, 22 are in position and the third sensor signals that the fixing device is in the fixed state, the pivoting movement of the turntable 16 takes place by means of the lifting-pivoting device 30.

In a further preferred embodiment according to Fig. 1 and 2 the winding machine 10 is set up in at least one disengaged state for operation with a drum 28 rotating around a horizontal axis and in at least one engaged state is set up for operation with a pallet 14 rotating around a vertical axis.

According to Fig. 3 a drive device 48 is provided, which drives the turntable 16 in the engaged state via the shaft 34 and the gear 26. In the disengaged state, the drive device 48 drives the rollers 18 via the gear 26.

Reference symbol list

10

winding machine

12

material

14

palette

16

Turntable

18

role

20

Coupling element

22

Coupling element

24

Swing arm

26

transmission

28

drum

30

Swivel device

32

sensor

34

Wave

36

sensor

38

Fixation device

40

Component

42

counterpart

44

Formation

46

recess

48

Drive device

Claims (15)

1. A winding machine (10) for winding and/or unwinding band-shaped or strip-shaped material (12) having at least one rotary plate (16), which is arranged on a pivot arm (24) and can be driven by at least one drive device (48) by means of at least two opposite coupling elements (20, 22), at least one coupling element (20) being associated with the rotary plate (16), the rotary plate (16) being transferrable by means of a pivot device (30) between at least one decoupled state and at least one coupled state,
   characterized in that the winding machine comprises at least one first sensor and, in using the first sensor, the coupling elements (20, 22) can be positioned opposite one another in a coupling position in a sensor-based manner.
2. Winding machine according to claim 1, characterized in that at least one coupling element (20, 22) is fixable in the coupling position.
3. Winding machine according to claim 2, characterized in that at least one fixing device (38) is provided, which fixes the coupling element (20) in the coupling position in the decoupled state.
4. Winding machine according to one of the preceding claims, characterized in that at least one second sensor (36) is provided, which detects the position of the coupling element (20) and/or with which the coupling element (20) can be positioned in the coupling position.
5. Winding machine according to claim 3 or 4, characterized in that the fixing device (38) is arranged on or in the pivot arm (24).
6. Winding machine according to one of the claims 3 to 5, characterized in that the fixing device (38) comprises at least one component (40) which, in the fixed state, cooperates with at least one counterpiece (42) which is associated with the rotary plate (16).
7. Winding machine according to one of the claims 3 to 6, characterized in that at least one third sensor is provided, which determines the state of the fixing device (38).
8. Winding machine according to one of the preceding claims, characterized in that one coupling element (22) comprises at least one formed-on portion (44) and the other coupling element (20) comprises at least one recess (46), which engage in one another in a positive-locking manner in the coupled state.
9. Winding machine according to claim 8, characterized in that the orientation of the formed-on portion (44) and of the recess (46) in the coupling position runs substantially along and/or parallel to the plane spanned by the pivot movement of the pivot device (30).
10. Winding machine according to one of the preceding claims, characterized in that the pivot device (30) is a lift-and-pivot device formed preferably as a piston-cylinder unit, wherein in particular the lift movement is configured to actuate the fixing device (38) on the rotary plate (16).
11. Winding machine according to one of the preceding claims, characterized in that the at least one drive device (48) both in the decoupled state drives a drum (28) revolving about a horizontal axis and in the coupled state drives a pallet (14) revolving about a vertical axis.
12. Winding machine according to one of the preceding claims, characterized in that it is configured in the at least one decoupled state for operation with a drum (28) revolving about a horizontal axis, and in that it is configured in the at least one coupled state for operation with a pallet (14) revolving about a vertical axis.
13. A method for transferring a rotary plate (16) of a winding machine (10) according to claim 1 between at least one coupled state and at least one decoupled state, characterized by the following steps:

    - positioning, in a sensor-based manner, at least one coupling element (20, 22) of at least two coupling elements (20, 22) opposite the other in a coupling position,

    - pivoting the rotary plate (16).
14. Method according to claim 13, characterized by the additional step:

    - fixing at least one coupling element (20, 22).
15. Method according to claim 13 or 14, characterized by the additional step:

    - determining the state of the fixing device (38).

Images