WO2022018125A1

WO2022018125A1 - Winding machine

Info

Publication number: WO2022018125A1
Application number: PCT/EP2021/070354
Authority: WO
Inventors: Jürgen Leicht
Original assignee: Leicht Stanzautomation Gmbh
Priority date: 2020-07-22
Filing date: 2021-07-21
Publication date: 2022-01-27
Also published as: DE102020119382A1; EP4010132C0; EP4010132A1; EP4010132B1; US20230294152A1

Abstract

A winding machine (10) for winding and/or unwinding band-shaped or strip-shaped material (12) has at least one rotary plate (16), which is mounted on a pivot arm (24) and can be driven via at least two opposing coupling elements (20, 22), wherein at least one coupling element (20) is assigned to the rotary plate (16), and the rotary plate (16) can be moved via a pivot device (30) between at least one decoupled state and at least one coupled state. Because the coupling elements (20, 22) can be positioned opposite one another in a coupling position using sensors, this enables a coupling process which is as wear-free as possible.

Description

winding machine

description

Reference to related applications

The present application relates to and claims priority from German patent application 102020 119 382.3, filed on July 25, 2020, the disclosure content of which is hereby expressly made the subject matter of the present application in its entirety.

field of invention

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

State of the art

Tape or strip material is used for many purposes in industry. For example, by stamping the strip or strip-shaped material, e.g. a metal strip, a wide variety of components can be produced, for example for the electrical industry. The material in strip or strip form is usually delivered on drums or pallets and must first be unwound from the drum or pallet for the stamping process, for example. Correspondingly, the reverse case occurs during the production of the material, and the material is wound up. The material is then wound up, for example on a drum or pallet, after manufacture for transport to a customer.

Depending on whether the material has to be wound or unwound onto a drum or a pallet, the drum is usually rotated about a horizontal axis or the pallet about a vertical axis, so that the material in the form of a strip or strip is wound or unwound can be unwound. In the prior art, there are devices for this purpose which, for example, have a horizontal or a vertical axis of rotation and thus wind up or unwind the strip-shaped material. DE 202 03489 U1 discloses a horizontal unwinder for unwinding strip-shaped or strip-shaped material from at least one horizontally positioned coil with a rotary drive and a guide device. A sensor device is provided for scanning the height of the coils and can be adjusted as a function of the height detected. In this way, the unwinder can be adjusted to the height of the material conveyed by the coil, depending on the material used.

DE 3687229 T2 discloses a feed system for a tape to a production line, with the spool being arranged on a turntable or a turntable. The rotating unit is not pivoted.

Also in the prior art, in particular in the applicant's product portfolio, devices are disclosed which implement both possible applications (pallet and drum) in one device (Leicht Stanzautomation GmbH, https://stanzautomation.de/de/maschinen/ptw-130 , last accessed: 06/30/2020). 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 about a horizontal axis. When changing between the two modes, the turntable is engaged or disengaged from a motor via a clutch device. Depending on the position of the turntable, however, the coupling elements of the claw coupling are positioned in such a way that they can "get stuck" when coupling or decoupling, causing the coupling elements to wear out and/or be damaged. It is therefore necessary to manually align the coupling elements in the opposite direction to one another.

Summary of the Invention

Proceeding from this state of the art, the object of the present invention is to provide a winding machine for winding and/or unwinding band or strip-shaped material which enables the simplest, quickest and most wear-free coupling process possible.

This object is achieved by a winding machine having the features of claim 1 and by a method having the features of claim 13. Advantageous developments are the subject matter of the dependent patent claims. The features listed individually in the patent claims can be combined with one another in a technologically meaningful 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 oppositely identical coupling elements, with at least one coupling element being assigned to the turntable. In this context, material in strip form can be understood to mean metallic and non-metallic material, but also additional raw material or solid material, e.g. in the form of unpunched and/or unprocessed metal strips.

Winding of the strip-shaped material is understood to mean both winding up and unwinding of the material, i.e. the device can be used for both purposes. Opposite means in this context that the coupling elements can engage in one another at least in a positive and/or non-positive manner.

The turntable can be transferred 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 to a drum mode, for example, and the engaged state to a pallet mode, for example. The coupling elements can be positioned opposite one another in at least one coupling position by means of at least one sensor, for example electrically and/or magnetically, which advantageously makes the coupling process as simple, quick and wear-free as possible possible. In principle, several coupling positions can also be provided. Without a sensory positioning that is as accurate and precise as possible and opposite to one another, the coupling elements would collide, jam and wear out during the coupling process, so that the coupling elements and/or the machine could be damaged. The coupling elements would therefore first have to be aligned manually, which is time-consuming, 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 reliable coupling when the coupling element is twisted, the coupling element can preferably be positioned in the coupling position with at least one first sensor, eg an electrical and/or magnetic sensor. For example, it is conceivable that in the disengaged state a coupling element is fixed, for example 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 a mutually opposite position for the coupling, the first sensor detects the position of the coupling element that can still be rotated and, if the coupling element is not already in the coupling position, causes the coupling element to move into the coupling position tion is brought, for example by a position encoder such as a motor. If the coupling element were to move, for example, during the pivoting process of the turntable, the sensor would register this and position the coupling element accordingly.

During, for example, the pivoting movement of the turntable during the transition between the disengaged state and the engaged state, it can happen that the turntable and/or at least one coupling element rotate as a result of 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 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 of the coupling elements can be fixed.

At least one fixing device, e.g. a linear swivel clamp, is preferably provided, which fixes the coupling element in the coupling position in the uncoupled state. This advantageously guarantees a simple, quick and secure fixation. For example, the fixing device fixes the coupling element that 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 and for a secure fixation is preferably at least one second sensor, for example electrical and / or magnetic sensor provided which detects the position of the Kupplungsele element, for example the coupling element, which is associated with the turntable. This ensures that both coupling elements can be positioned in opposite positions to each other and, for example, the swiveling process of the turntable only starts after the second sensor has detected the correct position. The coupling element, which is assigned to the turntable, can preferably be positioned in the coupling position with the aid of the second sensor. For example, positioning can take place via a further position transmitter, eg a second motor, or via the position transmitter.

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

Advantageously for stable and secure fixing 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 embodied as a conical component and the counterpart as a conical counterpart. In principle, however, other designs are also conceivable, for example as a hook and eyelet. More preferably, for example, the fixing device can be designed as a linear swivel clamp with a conical component, the component swiveling e.g. by 90° when actuated and then moving into the conical counterpart and thus fixing the turntable and the coupling element.

So that the pivoting movement of the turntable does not already take place before the coupling element is correctly fixed, and in order to advantageously ensure secure fixing, a third sensor, for example an electrical and/or magnetic sensor, is provided in a preferred embodiment at least, which the state of the Fixation device determined. For example, the sensor can register as soon as the component has entered the 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 a coupling that is as simple and effective as possible, one coupling element preferably has at least one projection and the other coupling element has at least one recess, which engage in one another in a form-fitting manner in the coupled state. In principle, it is also conceivable that the coupling elements in the coupled state interlock positively and/or non-positively. During the transfer of the turntable between the engaged and the disengaged state, it can happen that the two coupling elements are pressed against one another. For example, when decoupling, it can happen that the coupling elements are in opposite directions in the coupling position, but can still jam due to a pivoting angle. In order to advantageously prevent damage to the coupling elements during the coupling process, the direction of the projection 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 about which the pivoting movement of the turntable takes place is thus at right angles to the orientation of the projection or the recess.

In order to advantageously ensure that the coupling element is fixed 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 Actuate the device on the turntable. For example, when transferring from the engaged to the disengaged state, the fixing device is first actuated by means of the lifting and 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 about a horizontal axis and in at least one engaged state for operation with a drum rotating about a vertical axis set up around the pallet.

A drive device is preferably provided which drives the drum rotating around the horizontal axis both in the uncoupled state and the pallet rotating around the vertical axis in the coupled state. This advantageously results in a space-saving drive option for driving both modes. The object is also achieved by a method having the features of claim 13. For an advantageously simple, fast 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 positioned opposite to one another in a coupling position by sensors. The turntable is then pivoted.

At least one coupling element is preferably fixed so that the coupling elements do not slip during the pivoting movement of the turntable and become detached from the coupling position. The coupling element which is assigned to the turntable is preferably fixed. In principle, however, it is also conceivable to fix individual or all of the 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, 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 that is associated with the turntable, is fixed.

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

Brief description of the figures

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

1 shows a winding machine in the engaged state (pallet mode), 2 shows a winding machine in the disengaged state (drum mode),

3 a drive device of the winding machine,

4 shows the winding machine in the uncoupled state according to FIG. 2 without a drum,

5 shows a detail according to FIG. 3 in the uncoupled state,

6 shows a detailed view of a coupling element in the coupling position according to FIG. 5,

7 shows a detailed view of a coupling element in the coupling position according to FIG. 5,

8, 9 detailed views of the coupling elements in the engaged state,

Fig. 10 -12 Exterior and interior views of the swivel arm with fixing device in different positions,

13, 14 the fixing device with pivoted component,

15, 16 the fixing 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 and are not intended to limit the inventive concept to a specific arrangement.

Before the invention is described in detail, it should be pointed out that it is not limited to the respective components of the device and the respective method steps, since these components and methods can vary. The terms used herein are only intended to describe particular embodiments and are not used in a limiting manner. If, in addition, the singular or indefinite articles are used in the description or in the claims, this also refers to the plural number of these elements, unless the overall context clearly makes something else clear.

In Fig. 1, a winding machine 10 for winding and / or unwinding of 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 strip-shaped material 12 can be wound up and/or unwound. The winding machine 10 is in Fig. 1 in a coupled state, the so-called pallet mode.

A so-called drum mode is shown in FIG. The winding machine 10 is in a disengaged state in FIG. To move the wrapper 10 from pallet mode in FIG. 1 to drum mode in FIG. 2, or from drum back to pallet To convert mode, the turntable 16 is pivoted, which is arranged on a pivot arm 24. A drum 28 can be placed on rollers 18, the drum 28 rotating about a horizontal axis as a result of the rotation of the rollers 18 in such a way 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 gear 26, e.g. a belt drive, which in turn is connected to a position transmitter, e.g. a motor. The gear 26 is connected to a shaft 34 which drives a clutch element 22, e.g. In the coupled state, the position sensor drives the shaft 34 via the transmission 26 and thus the turntable 16 via the clutch elements. In the disengaged state, the position transmitter drives the rollers 18 via the gear 26 .

A diametrically opposed coupling element 20 is associated with the turntable 16 as shown in FIG. 4, so that the turntable 16 can be driven in the coupled state of the coupling elements 20, 22. Via a pivoting device 30, which can be designed as a piston-cylinder unit, for example, the turntable 16 can be switched between at least the uncoupled state, for example according to FIGS. 2 and 4, and at least the coupled state according to FIGS. 1 and 3 be transferred.

In Fig. 5, the coupling elements 20, 22 can be positioned in a coupling position opposite to each other by sensors. In principle, however, it is also possible to provide several corresponding coupling positions, e.g. different angular positions of the coupling elements in the exemplary embodiment. Advantageously, when the turntable 16 is pivoted by means of the pivoting device 30, there is an exact coupling of the coupling elements 20, 22, so that the coupling elements 20, 22 do not tilt and thus do not wear, or at least wear less. For this purpose, the turntable 16 is transferred from the disengaged state according to FIG. 5 to the engaged state, for example according to FIG. For this purpose, the pivoting device 30 moves the pivoting arm 24 and thus the turntable 16 and the coupling element 20.

The coupling element 20 is preferably fixed in the coupling position on the turntable 16 in FIG. 5, 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 damage them. 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 driven by the shaft driven by the position sensor via the gear 26 34 in the coupling position shown in FIG. 6 ge introduced. Subsequently, according to FIGS. 7 to 9, the coupling element 20 can be coupled to the coupling element 22 by a pivoting movement of the turntable 16 in opposite directions.

In a preferred exemplary embodiment, according to FIGS. 10 to 16, a fixing device 38, e.g. a linear swivel clamp, is provided, which fixes the coupling element 20 in the coupling position in the uncoupled state.

In a further preferred exemplary embodiment according to FIGS. 10 to 16, at least one second sensor 36 is provided, which detects the position of the coupling element 20. In the exemplary embodiments according to FIGS. 10 to 16, the sensor 36 is preferably arranged on the swivel arm 24 and detects the position of the turntable 16. In principle, the sensor 36 can also be arranged on the turntable 16 and, for example, detect the position of the swivel arm 24. It is also conceivable that the sensor 36 can be used to position the coupling element 20 in the coupling position, for example via a second position sensor.

In FIGS. 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 exemplary embodiment according to FIGS. 11 to 16, the fixing device 38 has at least one component 40, e.g. a conical component which, in the fixed state, interacts with at least one counterpart 42, e.g. a conical counterpart, which is assigned to the turntable 16. If the fixing device 38 is actuated, the component 40 preferably pivots by e.g. 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.

Preferably, the coupling element 22 has at least one projection 44 and the hitch be element 20 has at least one recess 46 according to FIG. In principle, the coupling elements 20, 22 can interlock positively and/or non-positively. In principle, other shapes of the coupling elements 20, 22 are conceivable as long as they engage in one another in a positive and/or non-positive manner.

In a further exemplary embodiment according to FIG. 5, the alignment of the projection 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. In FIG. 5, the projection 44 runs essentially along the pivoting path of the pivoting device 30, with the recess 46 of the coupling element 20 also running in this direction. In other words, the projection 44, the recess 46 and the pivoting movement of the pivoting device 30 lie in one plane or the pivot axis of the pivoting movement of the pivoting device 30 is at right angles to the orientation direction of the projection 44 and the recess 46. Runs, for example, se If the projection 44 and the recess 46 are in a different, diametrically opposed position to one another, then the coupling elements 20, 22 could tilt during the coupling process due to the pivoting angle and thus become damaged.

In a further preferred exemplary embodiment according to FIGS. 10 to 16, the pivoting device 30 is a lifting and pivoting device, preferably designed as a piston-cylinder unit, with the lifting movement in particular being set up and used to fix the device 38 on the turntable 16 to press. For example, for the transfer of the winding machine 10 from the pallet mode to the drum mode, the lifting and 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. If, for example, the winding machine 10 is transferred back from the drum mode 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 sensor 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 fixed with the fixing device 38 beforehand. 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 and pivoting device 30.

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

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

It goes without saying that this description can be subject to various modifications, changes and adaptations within the range of equivalents to the appended claims.

Reference List

10 winding machine

12 materials

14 pallet

16 turntables

18 roll

20 coupling element

22 coupling element

24 swivel arm

26 gears

28 drum

30 swivel device

32 sensors

34 wave

36 sensors

38 fixation device

40 component

42 counterpart

44 molding

46 recess

48 drive device

Claims

patent claims

1. Winding machine (10) for winding and/or unwinding band or strip-shaped material (12) with at least one turntable (16) which is arranged on a swivel arm (24) and via at least two oppositely identical coupling elements (20, 22) can be driven by at least one drive device (48), at least one coupling element (20) being assigned to the turntable (16), the turntable (16) being switched between at least one disengaged state and at least one engaged state via a pivoting device (30). State can be converted, characterized in that the coupling elements (20, 22) in a coupling posi tion can be positioned opposite to one another by sensors.

2. winding machine according to claim 1, characterized in that at least one hitch be element (20, 22) can be fixed in the coupling position.

3. Winding machine according to claim 2, characterized in that at least one fi xierungs device (38) is provided, which fixes the coupling element (20) in the coupled state in the coupling position.

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 swivel arm (24).

6. Winding machine according to one of claims 3 to 5, characterized in that the fixing device (38) has at least one component (40) which in the fixed state cooperates with at least one counterpart (42) which the rotary plate ler (16) assigned.

7. winding machine according to one of claims 3 to 6, characterized in that we 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 the one coupling element (22) has at least one projection (44) and the other Coupling element (20) has at least one recess (46) which engage in one another in a form-fitting manner in the coupled-in state.

9. Winding machine according to claim 8, characterized in that the alignment of the projection (44) and the recess (46) in the coupling position essentially along the plane spanned by the pivoting movement of the pivoting device (30) and/or parallel to it.

10. Winding machine according to one of the preceding claims, characterized in that the pivoting device (30) is a lifting and pivoting device preferably formed as a piston-cylinder unit, the lifting movement in particular being set up to fix the fixing device ( 38) on the turntable (16).

11. Winding machine according to one of the preceding claims, characterized in that the at least one drive device (48) drives a drum (28) revolving around a horizontal axis both in the disengaged state and a pallet (14) revolving about a vertical axis in the engaged state .

12. Winding machine according to one of the preceding claims, characterized in that it is set up in at least one disengaged state for operation with a rotating drum (28) about a horizontal axis and that in we least one engaged state for operation with a a vertical axis revolving pallet (14) is set up.

13. A method for transferring a turntable (16) of a winding machine (10) between at least one engaged state and at least one disengaged state, characterized by the following steps:

- Sensory positioning of at least one coupling element (20, 22) and at least two coupling elements (20, 22) opposite to each other in a coupling position,

- Swivel the turntable (16).

14. The method according to claim 13, characterized by the additional step:

- Fixing at least one coupling element (20, 22).

15. The method according to claim 13 or 14, characterized by the additional step:

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