Reversing winder and system

Abstract

The invention relates to a reversing winder, having winding shaft receptacles (2), wherein a respective winding shaft receptacle (2) is configured to receive in each case one end portion of a winding shaft (W), having two pivoting wheels (3) which are spaced apart from one another, wherein the winding shaft receptacles (2) are arranged in pairs on the pivoting wheels (3), wherein the pivoting wheels (3) are configured to pivot the winding shafts (W) between a working position (II) and an insertion position (I), wherein in each case one winding shaft lock (6) is assigned to a respective winding shaft receptacle (2), having at least one sensor arrangement (7) for monitoring at least one winding shaft lock (6), wherein the sensor arrangement (7) has at least one sensor (8), wherein the sensor arrangement (7) is fastened in a stationary manner to a fastening structure (9) and the winding shaft receptacles (2) can be pivoted relative to the sensor arrangement (7) by means of the pivoting wheel (3).

Description

[0001] Turret winder and system

[0002] The present invention relates to a turret winder with winding shaft receptacles, wherein each winding shaft receptacle is configured to receive a respective end section of a winding shaft, with two spaced-apart pivot wheels, wherein the winding shaft receptacles are arranged in pairs on the pivot wheels, wherein the pivot wheels are configured to pivot the winding shafts between a working position and an insertion position, wherein a winding shaft lock is assigned to each respective winding shaft receptacle, and with at least one sensor arrangement for monitoring at least one winding shaft lock, wherein the sensor arrangement has at least one sensor. The invention further relates to a system with such a turret winder.

[0003] Turret winders are winding systems that are assigned, for example, to a system with a machine for the production of windable products, such as a printing system or the like. Turret winders designed as unwinders serve to feed material into, for example, the printing system. Turret winders designed as take-up winders serve to remove material, for example, from the printing system. A printing system can therefore have one turret winder as the unwinder and another turret winder as the take-up winder. Each turret winder usually accommodates two material rolls that can be alternately connected to the printing system to enable uninterrupted printing. Each material roll consists of a so-called winding shaft and a material web wound onto this winding shaft.

[0004] For the safe operation of such a turret winder, winding shaft locks are used which, on the one hand, serve to secure the winding shafts arranged in the winding shaft holders in their position for machine operation and, on the other hand, to enable a machine operator to safely remove a respective winding shaft.

[0005] It is known to monitor each winding shaft lock with its own sensor array. The sensor array is attached to the swivel wheels with its sensors, allowing the respective winding shaft lock, along with its associated sensor array, to be pivoted with the swivel wheel.

[0006] For each winding shaft lock, for example, two separate sensors are provided, individually assigned to the respective winding shaft lock, and mounted on the swivel wheel. A turret winder with four winding shaft locks, for example, would therefore have eight sensors for sensing the position of these winding shaft locks. In addition to the large number of sensors, scanning them is also complex, as the scanning is performed via slip rings on the respective swivel wheel.

[0007] Against this background, the present invention is based on the technical problem of providing a turret winder that enables more efficient monitoring of the winding shaft locks, particularly by reducing the total number of sensors required and the design effort required to query them. Furthermore, a system with such a turret winder is to be provided.

[0008] The technical problem described above is solved by the features of the independent claims. Further embodiments of the invention emerge from the dependent claims and the following description.

[0009] According to a first aspect, the invention relates to a turret winder with winding shaft receptacles, wherein each winding shaft receptacle is configured to receive a respective end section of a winding shaft, with two spaced-apart pivot wheels, wherein the winding shaft receptacles are arranged in pairs on the pivot wheels, wherein the pivot wheels are configured to pivot the winding shafts between a working position and an insertion position, wherein a winding shaft lock is assigned to each respective winding shaft receptacle, with at least one sensor arrangement for monitoring at least one winding shaft lock, wherein the sensor arrangement has at least one sensor. The turret winder is characterized in that the sensor arrangement is fixedly fastened to a fastening structure and the winding shaft receptacles can be pivoted relative to the sensor arrangement by means of the pivot wheel.

[0010] Due to the stationary attachment of the sensor assembly to the mounting structure, no slip ring sensors are required, allowing the sensor assembly to be hard-wired for monitoring, for example, in a conventional manner. The sensor assembly's monitoring is therefore designed much more efficiently than is the case with the prior art described above. Furthermore, the sensor assembly can be used to monitor multiple winding shaft locks, since the winding shaft mounts with their associated winding shaft locks can be pivoted relative to the stationary sensor assembly using the swivel wheel. This allows the total number of required sensors to be reduced.

[0011] The sensor arrangement can be assigned to the loading position. The loading position is the position in which a relevant winding shaft can be removed from the winding shaft holders of the turret winder or inserted into them by a machine operator or an automation device. The loading position therefore serves to remove empty material rolls, i.e. completely unwound winding shafts, and replace them with new material rolls, if the turret winder is an unwinder. If the turret winder is a rewinder, full material rolls, i.e. winding shafts wound up with a material web up to the possible roll diameter, are removed in the loading position and replaced with empty material rolls, i.e. a winding shaft without a material web.

[0012] In comparison to the prior art described above, the sensor arrangement is therefore not pivotable by means of the swivel wheel and is not attached to the swivel wheel. Furthermore, it can be provided that, in particular, no sensor arrangement for monitoring at least one winding shaft lock is assigned to the working position.

[0013] Given the safety regulations that must be met, it is sufficient to only check the relevant winding shaft locks in the insertion position. Additional checking is not required during swivel operation of the swivel wheel or in the working position. This is because during swivel operation or in the working position, no interaction with a machine operator can take place that could endanger the machine operator.For additional security, it can be provided that at least one swivel wheel is assigned a mechanical locking device, wherein the mechanical locking device has a recess which enables opening of a respective winding shaft lock of the swivel wheel, provided that the respective winding shaft lock is in alignment with the recess, wherein a circumferential ring of the mechanical locking device forms a positive locking for the respective winding shaft lock for every other angular position, so that opening is not possible.

[0014] Each swivel wheel can be assigned a separate mechanical locking device.

[0015] The working position of a winding shaft is the position in which the respective winding shaft is connected to, for example, the printing system, so that a material web can be wound onto the winding shaft or unwound from the winding shaft, depending on whether the respective turret winder is a winder or an unwinder.

[0016] Each winding shaft lock may have a sliding sleeve that can be moved from a first position to a second position. The sliding sleeve may also be referred to as a sliding ring.

[0017] The sliding sleeve is designed to circumferentially enclose an end section of a winding shaft arranged in the winding shaft receptacle in the first position and to positively secure it against removal from the winding shaft receptacle. In other words, the winding shaft is locked against removal when the sliding sleeve is in the first position and, in particular, is also secured against loss during pivoting operation of the turret winder.

[0018] The sliding sleeve is designed so that, in the second position, the end section of the winding shaft arranged in the winding shaft holder is not circumferentially enclosed and is not positively secured against removal from the winding shaft holder. In other words, the winding shaft is released for removal in the second position of the sliding sleeve.

[0019] For the previously described case where the respective winding shaft lock has a sliding sleeve, the sensor arrangement detects the position of the sliding sleeve. In particular, it can be provided that the sliding sleeve can be moved from the first position to the second position, and vice versa, by a purely translational movement.

[0020] It can be provided that the sliding sleeve is guided along a linear guide, wherein it can further be provided, in particular, that the sliding sleeve is secured against rotation. For example, the sliding sleeve has only a purely translational degree of freedom to be moved from the first position to the second position and vice versa, but is not rotatable or otherwise displaceable.

[0021] The sliding sleeve may have a bolt which penetrates in an axial direction a bearing of the winding shaft receptacle in a direction away from the end section of the winding shaft, wherein the bolt serves as an extension of the sliding sleeve and, for the first and / or second position of the sliding sleeve, projects into a measuring range of the sensor arrangement.

[0022] As an extension of the sliding sleeve, the bolt therefore enables the sensor arrangement to be arranged outside the pivoting range of the turret winder and at a distance from the respective winding shaft holder.

[0023] The sensor arrangement can comprise two sensors. One of the two sensors can be configured to detect the bolt in the first position. Alternatively or additionally, one of the two sensors can be configured to detect the bolt in the second position.

[0024] The sensors can be sensors for contactless object detection, for example, capacitive, inductive, or optical proximity sensors or switches. According to alternative embodiments, a sensor can be designed as a tactile switching element or mechanical position switch, such as a roller limit switch or the like.

[0025] The sliding sleeve can be assigned a pawl configured to positively secure the sliding sleeve in the first position. For example, the pawl can be coupled to a spring to hold the pawl in a resiliently preloaded position, in which the pawl positively fixes the sliding sleeve in the first position. Furthermore, the pawl can positively secure the winding shaft against rotation in a release position, in which the pawl does not positively fix the sliding sleeve in the first position. The pawl can be positioned in particular against a housing that supports a bearing for the winding shaft receptacle.

[0026] Accordingly, the pawl can be moved from the locking position to the release position against the spring preload. If the pawl is in the release position, the sliding sleeve can be moved from the first position to the second position. Furthermore, the pawl is designed to positively lock rotation of the winding shaft in the release position, so that although the sliding sleeve can now be moved, the winding shaft can no longer rotate. This means that even while the sliding sleeve is being moved, the winding shaft cannot rotate because it is already locked by the pawl. This prevents injury to a machine operator due to an unforeseen rotation of the winding shaft and simplifies removal and / or insertion overall.

[0027] It can be provided that the sliding sleeve positively secures the winding shaft against rotation in the second position. A shaped element can be formed on the sliding sleeve, which, in the second position, rests against a housing of a bearing of the winding shaft holder, thus preventing rotation of the winding shaft.

[0028] According to a further aspect, the invention relates to a system comprising a machine for producing windable products, such as a printing press for producing a printed product, an extrusion line for producing a film product, a tubing machine for producing a tubular product or the like, comprising a turret winder for winding or unwinding a roll of material and / or comprising a turret winder for unwinding a roll of material, wherein the turret winder is designed according to one of the claims described above.

[0029] The invention is described in more detail below with reference to a drawing illustrating exemplary embodiments. The drawings schematically show:

[0030] Fig. 1 shows a turret winder in a perspective view; Fig. 2 shows a swivel wheel of the turret winder from Fig. 1 in an enlarged view;

[0031] Fig. 3 the swivel wheel from Fig. 2 in a swivel position;

[0032] Fig. 4 the swivel wheel from Fig. 2 in a further swivel position;

[0033] Fig. 5 a winding shaft lock of the turret winder from Fig. 1 in an enlarged

[0034] Depiction;

[0035] Fig. 6 shows the winding shaft lock from Fig. 5 in a sectional view in a first position;

[0036] Fig. 7 shows the winding shaft lock from Fig. 5 in a sectional view in a second position;

[0037] Fig. 8 shows the swivel wheel from Fig. 2 in a swivel position with a mechanical locking device;

[0038] Fig. 9 shows an enlarged view of a winding shaft lock of the turret winder from Fig. 1, with a latch in the securing position;

[0039] Fig. 10 a winding shaft lock of the turret winder from Fig. 1 in a perspective view from below, with a latch in the securing position.

[0040] Fig. 1 shows a perspective view of a turret winder 1. The turret winder 1 has four winding shaft receptacles 2. Each winding shaft receptacle 2 is configured to receive one end section of a winding shaft W. To simplify the illustration, the received winding shafts W are indicated only by center lines, which simultaneously represent the rotation axes of the respective winding shafts W.

[0041] The turret winder 1 has two spaced-apart swivel wheels 3, wherein the winding shaft receptacles 2 are arranged in pairs on the swivel wheels 3.

[0042] The swivel wheels 3 are designed to swivel the winding shafts W between a loading position (I) and a working position (II). For this purpose, each swivel wheel 3 has an external toothing 4 which meshes with an associated drive wheel 5 which also has external teeth. A rotation of the drive wheel 5 is therefore translated via the toothing into a rotation of the swivel wheel 3, so that winding shafts W held on the winding shaft receptacles 2 can be swiveled by means of the swivel wheels 3 from the loading position (I) to the working position (II) and vice versa. As can be seen from the illustration in Fig. 1, the turret winder 1 is essentially symmetrical in design, so that statements regarding one of the swivel wheels 3 apply equally to both swivel wheels 3.

[0043] Figures 3 and 4 illustrate a pivoting process, showing intermediate positions or angular positions between the insertion position (I) and the working position (II).

[0044] Each of the respective winding shaft receptacles 2 is assigned a winding shaft lock 6 (Fig. 6).

[0045] Each swivel wheel 3 is assigned a sensor arrangement 7, each of which is configured to monitor the winding shaft locks 6 mounted on the swivel wheels 3. In this case, each sensor arrangement 7 comprises two sensors 8.

[0046] The respective sensor arrangement 7 is fixedly attached to a respective fastening structure 9 and the winding shaft receptacles 2 can be pivoted relative to the sensor arrangement 7 by means of the pivot wheel 3.

[0047] The respective sensor arrangement 7 is assigned to the insertion position (I), wherein in Fig. 1, the two winding shaft receptacles 2 positioned directly adjacent to the respective sensor arrangement 7 are in the insertion position (I). This means that the respective winding shaft receptacles 2 have been positioned by means of the swivel wheels 3 such that a winding shaft W can be inserted into or removed from the winding shaft receptacles 2 arranged adjacent to the sensor arrangement in Fig. 7.

[0048] At the same time, the two further winding shaft receptacles 2 of the swivel wheels 3, which are at a greater distance from the respective sensor arrangement 7, are in the working position (II), in which a respective winding shaft W held in the winding shaft receptacles 2 is connected to an associated printing device or excursion device in order to feed a material web or to take up an already processed material web - depending on whether the turret winder 1 is a rewinder or an unwinder.

[0049] The respective sensor arrangement 7 is therefore not pivotable by means of the respective associated swivel wheel 3 and is not attached to the respective swivel wheel 3. Furthermore, in the present example, no sensor arrangement for monitoring the respective winding shaft locks 6 is assigned to the working position (II). This means that the winding shaft locks 6 are only interrogated in the insertion position (I).

[0050] The following describes, using Figures 5, 6, and 7 as examples, the structure of a winding shaft lock 6 and its interrogation by means of an associated sensor arrangement 7 in the insertion position (I). The explanations apply to all winding shaft locks 6 shown.

[0051] The winding shaft lock 6 is shown in an enlarged perspective view in Fig. 5. The winding shaft lock 6 has a sliding sleeve 10, wherein the sliding sleeve 10 can be moved from a first position (see Fig. 5 and Fig. 6) to a second position (see Fig. 7) and vice versa.

[0052] The sliding sleeve 10 is configured, in the first position, to circumferentially enclose an end section of a winding shaft arranged in the winding shaft receptacle 2 and to positively secure it against removal from the winding shaft receptacle 2. The relevant end section of a winding shaft W is arranged in a receiving area B of the winding shaft receptacle 2.

[0053] The sliding sleeve 10 is designed not to circumferentially enclose the end section of the winding shaft W arranged in the winding shaft receptacle 2 in the second position and not to secure it in a form-fitting manner against removal from the winding shaft receptacle 2, so that the respective winding shaft W can be removed from the winding shaft receptacles 2 as long as both winding shaft locks 2 securing the respective end sections are in the second position.

[0054] The sensor arrangement 7 in this case is a position query of the sliding sleeve 10.

[0055] Figures 6 and 7 each show the winding shaft holder 2 with the winding shaft lock 6 in a sectional view. The sliding sleeve 10 has a bolt 11 that penetrates a bearing 12 of the winding shaft holder 2 in the axial direction y, away from the end section of the winding shaft W. The bolt 11 serves as an extension of the sliding sleeve 10 and, for the second position of the sliding sleeve 10, projects into a measuring range of the sensor arrangement 7.

[0056] The sensors 8 of the sensor arrangement 7 are contactless position sensors that detect the presence or absence of an object in the immediate vicinity of the respective sensor 8.

[0057] In the first position of the sliding sleeve 10 shown in Fig. 5, the bolt 11 is fully engaged, so that neither of the two sensors 8 detects the bolt 11. As the sliding sleeve moves from the first position to the second position shown in Fig. 7, both sensors 8 successively detect the presence of the bolt 11, so that, as long as both sensors 8 detect the bolt 11, the arrangement of the sliding sleeve 10 can be assumed to be in the second position.

[0058] Likewise, if the respective winding shaft holder 2 is in the insertion position, it is assumed that the sliding sleeve 10 with the bolt 11 is arranged in the first position, provided none of the sensors 8 of the sensor arrangement 7 detects the presence of the bolt 11 in the immediate vicinity. In this way, the position of the bolt 11 can be queried for the first and second positions of the sliding sleeve 10 using the two sensors 8.

[0059] As shown in Figures 5, 6 and 7, the bolt 11 has a switching lug 22 which is attached to the end of the bolt 11 in order to improve detection of the position of the bolt by the sensors 8.

[0060] Fig. 8 shows the swivel wheel from Fig. 2 in a swivel position with a mechanical locking device 19. The mechanical locking device 19 has a recess 20 that allows opening of the respective winding shaft lock 2, provided that the respective winding shaft lock 2 is at the level of the recess 20 or in alignment with the recess 20. For any other angular position, a circumferential ring 21 of the mechanical locking device 19 forms a positive locking for the respective winding shaft lock 2, so that opening is not possible.

[0061] The sliding sleeve 10 is assigned a latch 13 (Figs. 6, 7, and 9), which is configured to positively secure the sliding sleeve 10 in the first position. This state can be seen as an example in Fig. 9, wherein the latch 13 is spring-loaded, i.e., resiliently preloaded, and held in a positively locking position by a preload spring 14, wherein the sliding sleeve 10 rests against a web 15 of the latch 13.

[0062] Figures 6 and 7 show the pawl 13 in a release position in which the pawl 13 does not fix the sliding sleeve 10 in a form-fitting manner in the first position, but rather allows the sliding sleeve 10 to be moved from the first position to the second position.

[0063] The latch 13 can be moved manually from the locking position (Fig. 9) to the release position (Fig. 6, Fig. 7). In this case, the preload force of the preload spring 14 is manually overcome by an operator, and the latch 13 is moved into the release position, allowing the sliding sleeve 10 to be moved.

[0064] In the release position, the pawl 13 positively secures the winding shaft W or the winding shaft holder 2 against rotation by the pawl 13 resting against a housing 16 and engaging in a recess 17 of the housing 16, which carries the bearing 12 of the winding shaft holder 2.

[0065] The pawl 13 therefore additionally serves to secure the winding shaft receptacle 2 and a winding shaft W received therein against rotation. Furthermore, it is provided that the sliding sleeve 10, when arranged in the second position, also positively secures the winding shaft W or winding shaft receptacle against rotation by positively supporting the sliding sleeve 10 against the housing 16.

[0066] Figures 8 and 9 show an alternative possibility for fastening the sensors 8, which similarly enable a position query of the bolt 11. Furthermore, Figures 8 and 9 show, by way of example, a drive 18 associated with the winding shaft holder 2, which in this case is a toothed belt drive.

[0067] The illustrated turret winder 1 can be part of a printing system comprising a printing press for producing a printed product, wherein the turret winder 1 can be configured for winding or unwinding a roll of material. It is understood that the printing system can have both a physical turret winder for winding and a physical turret winder for unwinding. Reference numerals

[0068] 1 turret winder

[0069] 2 winding shaft holder

[0070] 3 swivel wheel

[0071] 4 Gearing

[0072] 5 drive wheel

[0073] 6 winding shaft lock

[0074] 7 Sensor arrangement

[0075] 8 Sensor

[0076] 9 Mounting structure

[0077] 10 Sliding sleeve / sliding ring

[0078] 11 bolts

[0079] 12 Storage

[0080] 13 jack

[0081] 14 Preload spring

[0082] 15 jetty

[0083] 16 housings

[0084] 17 Recess

[0085] 18 Drive

[0086] 19 mechanical locking device

[0087] 20 recess

[0088] 21 rings

[0089] 22 Shaft flag W Winding shaft B Mounting area M Measuring range

Claims

Patent claims 1 . Turret winder, - with winding shaft receptacles (2), wherein each winding shaft receptacle (2) is designed to receive one end section of a winding shaft (W), - with two spaced-apart swivel wheels (3), wherein the winding shaft receptacles (2) are arranged in pairs on the swivel wheels (3), - wherein the swivel wheels (3) are arranged to swivel the winding shafts (W) between a working position (II) and a loading position (I), - wherein a respective winding shaft lock (6) is assigned to each winding shaft holder (2), - with at least one sensor arrangement (7) for monitoring at least one winding shaft lock (6), - wherein the sensor arrangement (7) has at least one sensor (8), characterized in that - the sensor arrangement (7) is fixedly attached to a fastening structure (9) and the winding shaft receptacles (2) can be pivoted relative to the sensor arrangement (7) by means of the pivot wheel (3).

2. Turret winder according to claim 1, characterized in that the sensor arrangement (7) is assigned to the insertion position (I).

3. Turret winder according to one of the preceding claims, characterized in that the sensor arrangement (7) is not pivotable by means of the pivot wheel (3) and is not fastened to the pivot wheel (3) and / or the working position (II) is not assigned a sensor arrangement (7) for monitoring at least one winding shaft lock (6) and / or at least one pivot wheel (3) is assigned a mechanical locking device (19), wherein the mechanical locking device (19) has a recess (20) which enables opening of a respective winding shaft lock (2) of the swivel wheel (3), provided that the respective winding shaft lock (2) is in alignment with the recess (20), wherein a circumferential ring (21 ) of the mechanical locking device (19) forms a positive locking for the respective winding shaft lock (2) for each other angular position, so that opening is not possible.

4. Turret winder according to one of the preceding claims, characterized in that - that a respective winding shaft lock (6) has a sliding sleeve (10) which can be moved from a first position to a second position, - that the sliding sleeve (10) is designed to surround an end section of a winding shaft (W) arranged in the winding shaft holder (2) on the circumference in the first position and to secure it in a form-fitting manner against removal from the winding shaft holder (2), - that the sliding sleeve (10) is designed to engage, in the second position, the end section of the winding shaft arranged in the winding shaft holder (2) (W) not to be enclosed circumferentially and not to be secured positively against removal from the winding shaft holder (2), and - that the sensor arrangement (7) is a position query of the sliding sleeve (10).

5. Turret winder according to claim 4, characterized in that - that the sliding sleeve (10) has a bolt (11) which penetrates in an axial direction a bearing (12) of the winding shaft holder (2) in a direction away from the end section of the winding shaft (W), and - that the bolt (11) serves as an extension of the sliding sleeve (10) and, for the first and / or second position of the sliding sleeve, projects into a measuring area (M) of the sensor arrangement (7).

6. Turret winder according to claim 5, characterized in that - that the sensor arrangement (7) has two sensors (8) and - that one of the two sensors (8) is arranged to detect the bolt (11) in the first position of the sliding sleeve and / or one of the two sensors (8) is arranged to detect the bolt (11) in the second position of the sliding sleeve.

7. Turret winder according to one of claims 4 - 6, characterized in that the sliding sleeve (10) is assigned a pawl (13) which is designed to secure the sliding sleeve (10) in a form-fitting manner in the first position, in particular that the pawl (13) is coupled to a pretensioning spring (14) in order to hold the pawl (13) resiliently pretensioned in a securing position in which the pawl (13) fixes the sliding sleeve (10) in a form-fitting manner in the first position.

8. Turret winder according to claim 7, characterized in that the pawl (13) positively secures the winding shaft (W) against rotation in a release position in which the pawl (13) does not positively fix the sliding sleeve (10) in the first position, wherein the pawl (13) bears in particular against a housing (16) which carries a bearing (12) of the winding shaft holder (2).

9. Turret winder according to one of the preceding claims 4 - 8, characterized in that the sliding sleeve (10) positively secures the winding shaft (2) against rotation, provided that the sliding sleeve (10) is in the second position.

10. System, with a machine for producing windable products, such as a printing press for producing a printed product, an extrusion line for producing a film product, a hose machine for producing a hose product or the like, with a turret winder (1) for winding up a roll of material and / or with a turret winder (1) for unwinding a roll of material, wherein the turret winder (1) is designed according to one of the claims described above.

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