Winder, system, and method

Abstract

A winder (1), having a roll receptacle (2, 3) for holding and mounting a material roll (27, 35), having a device (4) for measuring a diameter (d) of the material roll (27, 35), wherein the device (4) for measuring the diameter (d) of the material roll (27, 35) has a scanner (6) which can be moved along an axis (5).

Description

[0001] Winder, system and process

[0002] The present invention relates to a winder, in particular for a printing press. Furthermore, the invention relates to a printing system with such a winder and a method for producing windable products.

[0003] A winder, e.g., for a printing press, is used in particular to wind up printed products produced by the printing press (winding up) or to unwind material webs supplied to the printing press as a material roll (unwinding). For this purpose, the winder has a roll holder for holding and storing a material roll. The winder has a device for measuring the diameter of the material roll.

[0004] Known devices used in winders for measuring the diameter of a material roll include, for example, optically measuring distance sensors or distance sensors, such as a laser distance sensor. A disadvantage here is that laser distance sensors are not suitable for opaque or high-gloss materials. Depending on the nature of the material roll, manual user intervention is therefore required to determine the diameter or to synchronize or perform a roll change.

[0005] Against this background, the present invention is based on the technical problem of providing a winder that reliably enables diameter detection, particularly for opaque or high-gloss materials. Furthermore, a system with such a winder and a method for producing windable products are to be provided. The technical problem described above is solved with the features of the independent claims. Further embodiments of the invention emerge from the dependent claims and the following description.

[0006] According to a first aspect, the invention relates to a winder with a roll holder for holding and storing a roll of material and with a device for measuring the diameter of the roll of material. The winder is characterized in that the device for measuring the diameter of the roll of material comprises a movable scanner.

[0007] While the stationary distance sensors or point sensors described in the introduction are only suitable for scanning a single point of an outer diameter of a respective material roll and determining a corresponding distance thereto, from which the diameter of the material roll can be deduced, the device in question, which has the movable scanner, is suitable for recording a large number of measuring points of the circumference of the material roll or the outer contour of the material roll as a whole in order to achieve a significantly more reliable and precise determination of the circumference of the material roll.

[0008] When we refer to the material roll being mounted on the winder, this means that the material roll is mounted on a frame of the winder so that it can rotate about a rotational axis. In particular, the material roll can be held on a swivel wheel if the winder is a turret winder.

[0009] In particular, the material roll can be automatically inserted into a corresponding storage area of ​​the winder and also automatically removed from the winder. Corresponding systems for automated roll changing are known.

[0010] In addition to determining the diameter of the material roll, the device for measuring the diameter of the material roll can also be configured to determine a diameter of a sleeve or winding shaft of the material roll.

[0011] The winder can have two roll holders, so that two material rolls can be held and stored on the winder simultaneously. In particular, the material rolls can be held on a swivel wheel if the winder is a turret winder. Each roll holder can be configured to accommodate a material roll with a width of more than 50 cm, in particular to accommodate a material roll with a width of more than 100 cm, and furthermore, in particular to accommodate a material roll with a width of less than or equal to 250 cm.

[0012] Each roll holder can be designed to hold a roll of material weighing more than 100 kg.

[0013] The material roll can have a sleeve or winding shaft designed to receive a material web from the material roll. The respective sleeve or winding shaft of the material roll has, in particular, opposite end sections with which the material roll rests in the roll holder. Such a sleeve or winding shaft can be made of a metallic material.

[0014] A material web of the material roll can be a multi-layer material web or a single-layer material web. A material web of the material roll can have one or more layers of paper and / or plastic film and / or metal foil.

[0015] A web thickness of a material web can be greater than or equal to 5 pm (micrometers) or 10 pm, in particular greater than or equal to 25 pm, further in particular less than or equal to 1 mm.

[0016] The scanner can be movable along an axis. The axis can be a controlled axis, in particular a numerically controlled axis.

[0017] A travel path of the scanner can be defined as a straight line, so that the scanner can be moved, in particular, purely linearly. According to alternative embodiments, a travel path of the scanner can be defined as a circular arc or a wave-shaped profile. It is clear that to achieve the inventive success, it is only necessary that the scanner can assume various defined positions or be movable between various defined positions, whereby the type of travel path plays a subordinate role. The scanner can be pivotally mounted and pivotable about an axis or pivotable along a pivot path. The axis for moving the scanner can be a linear axis, such as a ball screw drive, a toothed belt axis, a rack and pinion axis, a pneumatic linear axis, or the like.

[0018] The scanner can be held, in particular, by means of a mount on a movable carriage, in particular a movable carriage of the axis. The mount can, in particular, comprise one or more sheet metal components, which can, in particular, be detachably connected to the movable carriage, for example, by screwing.

[0019] The axis, in particular a linear axis, can be attached to a stationary frame of the winder. In particular, the axis can be detachably connected to the stationary frame of the winder, for example, by screwing. The axis can be attached to the stationary frame of the winder by means of an axis mount. The axis mount can, for example, comprise a sheet metal part, in particular an angled sheet metal part or the like.

[0020] The axis, in particular the linear axis, can be arranged perpendicular to a rotational axis of the material roll when viewed from above. This allows the scanner to be moved along the entire thickness or diameter of the material roll. The length of the linear axis can be greater than the maximum permissible thickness of the material roll.

[0021] According to one embodiment of the winder, the axis, in particular the linear axis, together with the movable scanner is arranged above the material roll when viewed in the vertical direction, in particular, measured from a hall floor on which the winder is installed, more than 2 m above the hall floor.

[0022] The axis can include a device for determining the scanner's position along the axis, such as a rotary encoder, a displacement encoder, or the like. Certain axes already have displacement measuring systems integrated into the axis design. However, it can also be provided that an axis is used in combination with a separate device for determining an axis position.

[0023] For example, it can be provided that a device for determining an axial position of the scanner has a stationary rack and a pinion that can be moved with the scanner, wherein the pinion is in engagement with the rack and wherein a rotary encoder is assigned to the pinion in order to determine a longitudinal position of the scanner along the rack on the basis of a measured rotation of the pinion.

[0024] For example, the axis can be a pneumatically movable linear axis with a corresponding movable carriage on which the scanner is mounted. Likewise, a previously described pinion can be mounted on the carriage in combination with the corresponding rotary encoder to record the position of the scanner along the linear axis based on the rotations of the pinion in engagement with an associated rack. It is understood that the rack extends parallel to the longitudinal extent or linear travel path of the linear axis.

[0025] Preferably, the axis for moving the scanner comprises a toothed belt or is a toothed belt axis. The toothed belt axis, in particular, has an integrated system for determining the position.

[0026] It can be provided that the scanner can be moved by means of the axis along a distance greater than or equal to 100 cm and less than or equal to 400 cm.

[0027] The scanner can be a laser scanner, wherein the laser scanner covers a scanning angle greater than or equal to 90°, in particular greater than or equal to 180°, in particular greater than or equal to 270°. Alternatively or additionally, the laser scanner can have a range of more than 2 m and less than 5 m.

[0028] The device for measuring the diameter of the material roll can be configured for area protection. The scanner is configured, in a secure position, to demarcate a work area that may be entered by an operator during machine operation from a machine area that may not be entered by an operator during machine operation. Person detection of the scanner can be coupled with an emergency stop function. The scanner, together with the axis, therefore forms a dynamically positionable light barrier that can be positioned to secure different areas depending on the winder's operating mode.

[0029] In particular, it can be provided that the area is secured exclusively with the aid of the movable scanner, so that no static or fixed light barrier is present. According to a further aspect, the invention relates to a system, a machine for producing windable products, such as a printing press for producing a printed product, an extrusion system for producing a film product, a hose machine for producing a hose product or the like, with a winder for winding or unwinding a roll of material, wherein the winder is designed in a manner according to the invention. It can be provided that the system has both a winder for winding a roll of material and a winder for unwinding a roll of material, both of which can be designed in a manner according to the invention.

[0030] According to a further aspect, the invention relates to a method comprising the method steps: producing a windable product means of a system according to the invention, wherein a diameter of the material roll is measured by means of the movable scanner and wherein the scanner is moved by means of the axis during the measurement.

[0031] If the scanner is also used for area protection, one embodiment of the method can provide for the scanner to be used to monitor the machine area, whereby the scanner triggers a machine stop by means of the emergency stop function if a person is detected in the machine area.

[0032] It can be provided that the position of the movable scanner is adjusted depending on the diameter of the material roll. In this way, the largest possible area can be provided as a working area. In particular, it can be provided that a protective field position defined by the scanner position has a fixed distance from the roll diameter, which changes dynamically during machine operation, and thus the scanner position is also adjusted dynamically.

[0033] According to one embodiment of the method, it can be provided that the measurement of the diameter of the material roll is carried out by detecting two diametrical points of the material roll by means of the scanner.

[0034] Alternatively or additionally, it can be provided that the measurement of the diameter of the material roll is carried out by detecting a circumferential point of the material roll by means of the scanner, wherein the diameter is calculated based on a known center point of the material roll, wherein the center point has been measured in particular by means of a reference run of the scanner.

[0035] With reference to the winder in question, a distinction was previously made between a machine area and a work area, with reference to "entering" these areas by a person. The term "entering" encompasses not only a person entering the area in question, but also any intervention or reaching into or reaching into this area by a person. This means that it is already recognized if only a hand, arm, head, or foot of a person crosses or injures the relevant area boundary.

[0036] The invention is described in more detail below with reference to exemplary embodiments of the drawings. They show schematically:

[0037] Fig. 1 shows a winder according to the invention in a perspective view;

[0038] Fig. 2 shows a linear axis and a scanner of the winder from Fig. 1;

[0039] Fig. 3 is a side view of the linear axis and the scanner from Fig. 2;

[0040] Fig. 4 shows the winder from Fig. 1 in a side view in a section, with the scanner in a first end position;

[0041] Fig. 5 shows the winder from Fig. 1 in a side view in a section, with the scanner in a first measuring position;

[0042] Fig. 6 shows the winder from Fig. 1 in a side view in a section, with the scanner in a second measuring position;

[0043] Fig. 7 shows the winder from Fig. 1 in a side view in a section, with the scanner in a second end position;

[0044] Fig. 8. a printing system according to the invention;

[0045] Fig. 9 a flow chart of a method according to the invention

[0046] Fig. 10 shows a further linear axis for a turret winder from Fig. 1; Fig. 11 shows a turret winder according to the invention with a linear axis according to Fig. 10.

[0047] Fig. 1 shows a winder 1 according to the invention with a first roll holder 2 and a second roll holder 3. The winder 1 is a turret winder. To simplify the following explanations, a Cartesian coordinate system x, y, z is introduced.

[0048] The first roll holder 2 and the second roll holder 3 are each provided for holding and storing a respective associated roll of material, wherein in the present illustration no roll of material is arranged in the respective roll holders 2, 3.

[0049] The roller holders 2, 3 are formed on a swivel wheel 30, which can be pivoted about an axis 32 by means of a drive 31 for roller changes. The swivel wheel 30 and the drive 31 are externally toothed and mesh with each other.

[0050] The winder 1 has a device 4 for measuring a diameter of a material roll.

[0051] The device 4 has a scanner 6 that can be moved along an axis 5.

[0052] In this case, the axis 5 is a pneumatic linear axis 5. The structure of the device 4 for measuring the diameter of a material roll is described in more detail below with reference to Figures 2 and 3. The device 4 for measuring the diameter of a material roll is shown individually in Fig. 2 in an enlarged perspective view. The device 4 for measuring the diameter of a material roll is shown individually in Fig. 3 in a side view.

[0053] The pneumatic linear axis 5 is assigned a device 7 for determining an axis position of the scanner 6 (Fig. 3).

[0054] The device 7 for determining the axis position of the scanner 6 comprises a rotary encoder 8, a pinion 9, and a rack 10. The rack 10 and the linear axis 5 are fixedly connected to a frame 11 of the winder 1 and, viewed along their longitudinal extent, are oriented parallel to each other.

[0055] The pinion 9 engages with the rack 10, and the pinion 9 is held on a shaft 12 of the rotary encoder 8. The rotary encoder 8, together with the scanner 6, is attached to a movable carriage 13 of the pneumatic linear axis 5 by means of a holder 20.

[0056] If the movable carriage 13 of the pneumatic linear axis 5 is now moved along the longitudinal extension L of the linear axis 5, i.e., parallel to the x-axis, its linear, translational movement is converted into a rotation of the shaft 12 of the rotary encoder 8 by the rolling tooth engagement between the pinion 9 and the rack 10. Based on a measured angle of rotation of the rotary encoder 8, the longitudinal position of the scanner 6 in the x-direction can be determined based on the known gear geometry.

[0057] The pneumatic linear axis 5 has two spaced-apart end positions 14, 15. The end positions 14, 15 can also be referred to as end positions. Each end position 14, 15 is assigned a device 16, 17 for end position sensing.

[0058] The device 16 for end position sensing has a stationary component 18 in the form of a switching flag 18. The device 16 for end position sensing has a component 19 in the form of an electronic initiator 19 that can be moved by means of the axis 5. The initiator 19 is attached to the holder 20, to which the rotary encoder 8 and the scanner 6 are also attached.

[0059] The device 17 for end position sensing has a stationary component 21 in the form of a switching flag 21. The device 17 for end position sensing has a component 22 in the form of an electronic initiator 22 that can be moved by means of the axis 5. The initiator 22 is also attached to the holder 20.

[0060] As soon as the movable carriage 13 reaches one of the end positions 14, 15, the switching flag 18, 21 assigned to the respective end position 14, 15 is located on the front side directly in front of the initiator 19, 22 assigned to the respective end position 14, 15, which detects the assigned switching flag 18, 21 and thus indicates that the respective end position 14, 15 has been reached. The switching flag 21 is attached to an axle holder 23, which also supports the axle 5 and the rack 10. The axle holder 23 is attached to the frame 11.

[0061] According to alternative embodiments, the devices 16, 17 for end position query can be omitted and replaced by using a safe rotary encoder.

[0062] Furthermore, a cable carrier 24 or energy chain 24 is provided, which is attached to the frame 11 by a further bracket 25. One end of the energy chain 24 is connected to the bracket 20 so that it is guided in the longitudinal direction L. The energy chain 24 serves in a known manner to carry cables that are required for the operation of the scanner 6, the rotary encoder 8, and the initiators 19, 22 and are connected to them.

[0063] The brackets 20, 23, 25 may comprise formed sheets and / or angles.

[0064] As can be seen from Fig. 1, the scanner 6 covers a scanning plane S running essentially parallel to the yz-plane, which is schematically represented by the dashed lines emanating from the scanner 6. The scanning plane S can also be referred to as the protective field S.

[0065] The scanner 6 can be moved parallel to the x-direction along a distance greater than 100 cm by means of the axis 5. The longitudinal extension L shown in Fig. 2 is therefore greater than 100 cm.

[0066] The scanner 6 is a laser scanner 6, which is capable of covering a scanning angle greater than 90°. The laser scanner 6 has a range of more than 2 m and less than 5 m.

[0067] Fig. 4 shows the linear axis 5 with the scanner 6 in the end position 15, which is sensed by the position sensing device 17 using the switching flag 21 and the initiator 22. To the right of the scanning plane S shown in Fig. 4 is a work area or operating area 26 in which people are located.

[0068] Fig. 4 shows a material roll 27 accommodated in the roll holder 2. The material roll 27 has a sleeve 28, which can also be referred to as a winding shaft, on which a material web 29 is wound. To measure a diameter d of the material roll 27, the scanner 6 is moved by means of the linear axis 5 at a constant speed in the direction of the material roll 27, whereby the position of the scanner 6 in the longitudinal direction or x-direction is measured using the rotary encoder 8.

[0069] The scanner 6 detects the outer contour of the material roll 27 in the position shown in Fig. 5 and is moved further to the position shown in Fig. 6, in which the scanner 6 also detects the outer contour of the material roll 27. The diameter d can be calculated from the positions in the longitudinal direction or x-direction detected by the rotary encoder 8. The diameter d of the material roll 27 is therefore measured by detecting two diametrical points on the material roll 27 using the movable scanner 6.

[0070] Alternatively, the diameter d can be calculated simply by scanning the material roll 27 as shown in Fig. 5, provided the position of a center point M of the material roll is known. The center point can, for example, have been measured by means of a reference run of the scanner 6. The diameter can therefore be determined based on a single measurement position.

[0071] Fig. 7 shows the scanner 6 of the end position 14, which is queried via the device 16 for end position query by means of the switching flag 18 and the initiator 19.

[0072] The device 4 for measuring the diameter d of the material roll 27 can be configured in addition to the area protection in order to delimit the working area 26, which may be entered by an operator during machine operation, from a machine area 38, which may not be entered by an operator during machine operation.

[0073] The scanner 6 can be set up for person detection and coupled with an emergency stop function.

[0074] Depending on the operating state of the winder 1, the working area 26 and the machine area 38 can be different areas, as indicated in Figures 7 and 4.

[0075] Fig. 8 shows schematically and in a highly simplified manner a printing system 34, with a printing press 33 for producing a printed product and with the winder 1 for winding or unwinding the material roll 27. Since the winder 1 is a turret winder, a further material roll 35 is shown as an example, which is held and mounted with its sleeve 36 in the roll holder 3 of the winder 1, wherein a material web 37 of the material roll 35 is used by the printing press 33.

[0076] A method can therefore be specified, comprising the method steps: (A) producing a printed product by means of the printing system 34; (B) wherein a diameter d of the material roll 27 is measured by means of the movable scanner 6 and wherein the scanner 6 is moved by means of the axis 5 during the measurement; and (C) wherein the scanner 6 is used to monitor the machine area 38 and wherein the scanner 6 triggers a machine stop by means of the emergency stop function if a person is detected in the machine area 38.

[0077] Fig. 10 shows an alternative device 42 for measuring a diameter. To avoid repetition, only the differences from the previously described embodiment will be discussed, with the same reference numerals being assigned to the same features.

[0078] The device 42 for measuring a diameter differs essentially from the device 4 for measuring a diameter in that instead of the pneumatic linear axis 5, a toothed belt axis 41 is now used as the linear axis.

[0079] The toothed belt axis 41 has a toothed belt 40 driven by a motor 38. The position of the carriage 13, which is held on the toothed belt 40 and carries the scanner 6, is detected by a rotary encoder 39.

[0080] Fig. 11 shows an exemplary and schematic view of the device 42 in a state installed on the turret winder 1. Reference numerals

[0081] 1 winder

[0082] 2 roll holders

[0083] 3 roll holder

[0084] 4 Device for measuring a diameter and for area protection

[0085] 5 Linear axis / pneumatic linear axis

[0086] 6 scanners / laser scanners

[0087] 7 Device for determining the axis position

[0088] 8 rotary encoders

[0089] 9 pinions

[0090] 10 rack

[0091] 11 frame

[0092] 12 Wave

[0093] 13 sleds

[0094] 14 Final position

[0095] 15 End position

[0096] 16 Position query device

[0097] 17 Position query device

[0098] 18 Switch flag

[0099] 19 Initiator

[0100] 20 bracket

[0101] 21 Switch flag

[0102] 22 Initiator

[0103] 23 Bracket / axle bracket

[0104] 24 cable drag / energy chain

[0105] 25 bracket

[0106] 26 Operating area / working area

[0107] 27 Material roll 28 Sleeve I Winding shaft

[0108] 29 Material railway

[0109] 30 swivel wheel

[0110] 31 Drive

[0111] 32 Axis

[0112] 33 printing press

[0113] 34 printing system

[0114] 35 material roll

[0115] 36 Sleeve / winding shaft

[0116] 37 Material web

[0117] S Scan plane d Diameter x Coordinate axis y Coordinate axis z Coordinate axis

[0118] (A) Process step

[0119] (B) Process step

[0120] (C) Process step

[0121] 38 engine

[0122] 39 rotary encoders

[0123] 40 timing belts

[0124] 41 Linear axis / toothed belt axis

[0125] 42 Device for measuring a diameter and for area protection

Claims

Patent claims 1 . Winder, - with a roll holder (2, 3) for holding and storing a material roll (27, 35), - with a device (4, 42) for measuring a diameter (d) of the material roll (27, 35), characterized in that - the device (4, 42) for measuring the diameter (d) of the material roll (27, 35) comprises a movable scanner (6).

2. Winder according to claim 1, characterized in that the scanner (6) is movable along an axis (5), in particular that the axis (5) is a linear axis (5), such as a ball screw drive, a toothed belt axis (41), a rack axis, a pneumatic linear axis (5) or the like.

3. Winder according to claim 2, characterized in that the linear axis (5) is arranged perpendicular to a rotation axis of the material roll (27, 35) when viewed in a plan view.

4. Winder according to one of the preceding claims 2 or 3, characterized in that the axis (5) has a device (7) for determining an axis position of the scanner (6) along the axis (5), such as a rotary encoder (8), a displacement encoder or the like.

5. Winder according to claim 3 and claim 4, characterized in that the device (7) for determining an axial position of the scanner (6) has a stationary rack (10) and a pinion (9) movable with the scanner (6), wherein the pinion (9) is in engagement with the rack (10) and wherein a rotary encoder (8) is assigned to the pinion (9) in order to determine a longitudinal position of the scanner (6) along the rack (10) on the basis of a measured rotation of the pinion (9).

6. Winder according to one of the preceding claims 2 to 5, characterized in that the axis (5) has two mutually spaced end positions (14, 15) between which the scanner (6) can be moved, wherein each end position (14, 15) is assigned a device (16, 17) for end position query and wherein each device (16, 17) for end position query has in particular a stationary component (18, 21) and a component (19, 22) that can be moved by means of the axis (5).

7. Winder according to one of the preceding claims 2 - 5, characterized in that the scanner (6) can be moved by means of the axis (5) along a distance (L) greater than or equal to 100 cm and less than or equal to 400 cm.

8. Winder according to one of the preceding claims, characterized in that the scanner (6) is a laser scanner (6), wherein the laser scanner (6) in particular covers a scanning angle greater than or equal to 180 °, in particular greater than or equal to 270 ° and / or wherein the laser scanner (6) in particular has a range of more than 2 m and less than 5 m.

9. Winder according to one of the preceding claims, characterized in that the device (4) for measuring a diameter of the material roll (27, 35) is set up for area protection, wherein the scanner (6) is set up, in a securing position, to delimit a working area (26) which may be entered by an operator during machine operation from a machine area (38) which may not be entered by an operator during machine operation, wherein a person detection of the scanner (6) can be coupled to an emergency stop function.

10. System, comprising a machine for producing windable products, such as a printing machine for producing a printed product, an extrusion line for producing a film product, a tubing machine for producing a tubular product or the like, with a winder (1) for winding or unwinding a roll of material (27, wherein the winder (1) is designed according to one of the claims described above. 11 . Procedure, with the procedural steps: Producing a windable product by means of a system (34) according to claim 10; wherein a diameter (d) of the material roll (27, 35) is measured by means of the movable scanner (6) and wherein the scanner (6) is moved during the measurement.

12. Method according to claim 11 and claim 9, characterized in that the scanner (6) is used to monitor the machine area (38), wherein the scanner (6) triggers a machine stop by means of the emergency stop function if a person is detected in the machine area (38).

13. The method according to claim 12, characterized in that a position of the movable scanner (6) is adjusted depending on the diameter (d).

14. Method according to one of claims 11 - 13, characterized in that - the diameter of the material roll (27, 35) is measured by detecting two diametrical points of the material roll (27, 35) by means of the scanner; and / or - the diameter of the material roll (27, 35) is measured by detecting a circumferential point of the material roll (27, 35) by means of the scanner (6), wherein the diameter is calculated on the basis of a known center point of the material roll (27, 35), wherein the center point has been measured in particular by means of a reference run of the scanner (6).

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