EP4619331A1 - Hülse zum aufwickeln eines wickelguts und wickelwelle zur aufnahme einer hülse - Google Patents
Hülse zum aufwickeln eines wickelguts und wickelwelle zur aufnahme einer hülseInfo
- Publication number
- EP4619331A1 EP4619331A1 EP23793715.6A EP23793715A EP4619331A1 EP 4619331 A1 EP4619331 A1 EP 4619331A1 EP 23793715 A EP23793715 A EP 23793715A EP 4619331 A1 EP4619331 A1 EP 4619331A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sleeve
- winding
- holding element
- workpiece
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
- B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
- B65H75/245—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages by deformation of an elastic or flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/30—Arrangements to facilitate driving or braking
Definitions
- the invention relates to a sleeve for winding a winding material according to the preamble of patent claim 1 and to a winding shaft for receiving a sleeve according to the preamble of claim 11.
- WO 2019/224370 A1 already discloses a generic winding sleeve for winding a winding material within a winding machine.
- This sleeve comprises a one-piece workpiece that circumscribes a cylinder, the workpiece comprising two edge regions, each with an edge, the edge regions overlapping.
- the workpiece is elastically deformable, so that the sleeve can be brought from a relaxed state with a first inner diameter to a tensioned state with a second inner diameter and vice versa.
- the edge regions move relative to one another.
- the first inner diameter differs from the second inner diameter, with the first inner diameter in particular being smaller than the second inner diameter.
- the disadvantage is that when the winding is pulled off the sleeve, the sleeve is occasionally pulled off the shaft as well. This system has therefore proven to be unreliable.
- the second possibility is that the sleeve has holes through which pins held in the shaft engage. However, the edges of these openings are not sufficient to absorb the axial and circumferential forces that act. The edges therefore become damaged after a short time.
- the object of the present invention is therefore to propose a sleeve and a winding shaft in which the connection between the sleeve and the winding shaft is reliable and has a long service life without damage.
- At least one holding element is provided for holding the sleeve on a mandrel of the winding machine, wherein the holding element is fixedly arranged in a fastening region on the workpiece and in particular is non-detachably connected to the workpiece.
- the sleeve comprises an additional holding element, whereby this holding element is a separate component and is permanently connected to the workpiece in the fastening area.
- the holding element is connected to the workpiece during the manufacture of the sleeve.
- this makes it possible to connect a stable holding element to the workpiece, whereby the connection is preferably flat.
- a more durable connection between the workpiece and the winding shaft can be created using such a holding element.
- the sleeve is in particular only connected to the winding shaft via the holding element. In particular, the sleeve is only via the holding element, when this is connected to the winding shaft, is rotationally and axially immovably connected to the winding shaft.
- At least one extension region of the holding element extends beyond an axial end of the workpiece in the axial direction.
- the axial direction is a direction parallel to the main axis of inertia of the sleeve or of the roll wound on the sleeve.
- the holding element thus has a free region via which the holding element and thus the sleeve can be connected to the winding shaft.
- the fastening region in which the holding element is connected to the winding shaft thus borders on the workpiece of the sleeve, the workpiece itself only has contact with the winding shaft via the clamping elements of the winding shaft or via the outer surface of the shaft, whereby this contact does not produce a rotationally fixed connection or axial immovability.
- the extension region can comprise individual plates, which can have an increased thickness compared to the thickness of the material of the workpiece in order to provide the stability required for the connection to the shaft.
- the holding element is designed as a ring with an interruption.
- a ring-shaped design of the holding element ensures that the largest possible connection to the workpiece is possible.
- the interruption of the ring enables the holding element, together with the sleeve, to be brought essentially from the inner diameter to the outer diameter. This means that the movements of the sleeve are followed by the holding element, so that there are no unusual mechanical loads between the sleeve and the holding element.
- the overlap area of the workpiece is at least partially located within the gap in the ring. This particularly refers to the area of the workpiece that is in the fastening area. This measure again improves the mechanical stresses between the sleeve or the workpiece and the holding element are reduced.
- the holding element comprises through-openings, in particular through-holes, in the fastening area.
- through-openings in particular through-holes
- parts of the workpiece reach through the through-openings. This enables a particularly stable and permanent connection between the workpiece and the holding element.
- the workpiece comprises carbon fiber reinforced plastics with at least two layers, with the fastening area being arranged between the two layers.
- the workpiece is therefore made of two layers, which comprise, for example, carbon fiber mats, and is inserted between the areas of the holding element. After the holding element has been inserted, the workpiece is coated with a resin, which then hardens, preferably during a heat treatment, whereby a stable connection can be created between the holding element and the workpiece.
- the overlap area of the workpiece preferably only exists in the outer layer, so that the overlap area causes as little thickening as possible.
- the workpiece comprises carbon fiber reinforced plastics, whereby the plastics extend through through-openings in the fastening area.
- the plastic, in particular the resin can therefore also run through the optional through-openings of the holding element before curing, so that after curing there is an even more stable connection between the holding element and the workpiece.
- radially extending pins are provided on the extension area of the holding element. This makes it particularly easy to create a particularly strong connection between the sleeve and the winding shaft, which provides immovability in both the axial and the circumferential direction.
- the pins are evenly distributed over the circumference. This makes it possible for the transmission of the holding forces required to attach the sleeve to the winding shaft to be distributed over the circumference of the sleeve.
- the holding element is at least partially made of a metal, in particular of steel.
- Spring steel is particularly preferred.
- such a material provides the elasticity necessary for the diameter changes.
- this choice of material ensures high stability.
- the thickness of the holding element in the fastening area is preferably a maximum of 5 mm, preferably a maximum of 3 mm and in particular a maximum of 1 mm.
- a winding shaft for receiving a sleeve comprising a cylindrical shaft mandrel and a fastening element with which the holding element of the sleeve can be held immovably relative to the shaft mandrel at least in the axial direction.
- the fastening element is connected to the shaft dome in a rotationally fixed, axially immovable and detachable manner.
- a detachable connection can thereby be created that the fastening element can be screwed to the shaft mandrel, for example.
- the shaft mandrel can comprise a flange to which the fastening element can be fastened, for example screwed.
- the shaft mandrel can comprise several positions, at each of which a fastening element can be fastened. This makes it possible to fasten several sleeves to a winding mandrel or to optimally position a single sleeve on the winding mandrel depending on the width of the winding material.
- the fastening element has radially extending recesses on its inner surface, which faces the outer circumference of the shaft dome, for receiving the pins of the sleeve.
- the recesses can therefore at least partially enclose the pins of the holding element, so that at least some of the pins at least partially rest against the walls of the recesses.
- an individual recess is dimensioned such that the pin accommodated in this recess can be held essentially immobile within the recess. This allows the best possible transmission of force by a single pin, which can be reinforced compared to the other pins, for example due to a larger diameter, taking over a significant part of the transmission of force.
- all further recesses in the circumferential direction of the shaft dome have a larger extent than the respective pin that is accommodated in the respective recess. This provides a small degree of displaceability for the pins in the circumferential direction when the sleeve is brought in its diameter from the first inner diameter to the second inner diameter or vice versa.
- these pins also rest at least partially on the walls of the fastening element when the sleeve is in its tensioned state and contribute to the transmission of force.
- the object is additionally achieved by a winding machine for winding a winding material, in particular a web-shaped winding material, onto a sleeve which can be held for winding on a winding mandrel, wherein the sleeve is designed according to and/or the winding mandrel is designed according to one of the embodiments described above.
- FIG. 1 Perspective view of a sleeve according to the invention
- FIG. 2 Perspective view of a winding shaft according to the invention
- FIG. 4 As figure 3, but with the sleeve in the tensioned state.
- Figure 1 shows a perspective view of a sleeve 100.
- This comprises a workpiece with an outer layer 101, which preferably consists of a carbon fiber reinforced plastic (CFRP). Its edges 102 and 103 overlap one another so that they can be displaced against one another when the sleeve is subjected to a radially outwardly directed force from the inside, so that the sleeve and in particular the outer layer 101 of the workpiece have a second inner diameter which is larger than the first inner diameter which the layer 101 assumes when said force is not acting.
- CFRP carbon fiber reinforced plastic
- the workpiece comprises an inner layer 104, which, however, preferably does not have an overlap, but rather an interruption 105 running in the axial direction A, the width of which is selected such that, when the sleeve is not subjected to the force, the edges of the inner layer 104 just do not touch.
- a holding element designed as a ring 106 is inserted between the inner layer 104 and the outer layer 101, which essentially occupies the fastening area 107 that extends between the front edge 108 of the workpiece and the broken line 109.
- the ring 106 also has an interruption 110 in order to be able to follow the changes in the inner diameter, similar to the inner layer.
- the ring is firmly incorporated between the inner layer 104 and the outer layer and can no longer be moved without causing damage or even removed.
- a number of plates 112 extend beyond the front edge 108 of the workpiece, which are preferably formed in one piece with the ring 106.
- Each plate 112 carries a pin 113 extending radially outwards. These pins 113 are firmly connected to the plates, preferably welded, in order to ensure the greatest possible force transmission.
- FIG. 2 now shows a winding shaft 200 according to the invention, which is suitable for receiving a sleeve 100 according to the invention.
- This winding shaft 200 comprises a shaft dome 201, on which a flange 202 is fixed, i.e. immovable and non-rotatable relative to the shaft dome.
- a fastening element 203 is provided, which can be connected to the Flange 202 can be detachably connected, for example by means of screws 204.
- the fastening element 203 can, as shown, be designed in steps, with the connecting step 205 serving to connect to the flange 202, whereas the receiving step 206 serves to receive the pins 113 of the holding element.
- the fastening element also comprises a holding step 207.
- the sleeve 100 To attach the sleeve 100 to the winding shaft, the sleeve is first pushed onto the shaft mandrel 201 in the opposite direction to A. The fastening element 203 is then pushed over the sleeve 100 in the same direction until the fastening element 203 rests against the flange 202. Both are now connected to one another. The pins come into contact with the flange 202 and with the holding step 207, so that movement of the sleeve 100 in or against the axial direction A is avoided.
- the connecting stage 205 comprises a further connecting ring 301, which is shown in Figure 3.
- the connecting ring 301 is a fixed, i.e. non-movable, component of the fastening element 203.
- the pins 113 are located in recesses 302 and 303 of the connecting ring 301.
- the recesses 303 have a greater extension in the circumferential direction R than the recess 302, the extension of which in the circumferential direction is selected such that it can accommodate the relevant pin 113, in particular with minimal play. This prevents the sleeve from twisting in the circumferential direction of the winding shaft.
- the fastening element is preferably positioned relative to the sleeve 100 such that the recess 302 is opposite the interruption 110 of the ring 106. As a result, the sleeve expands essentially symmetrically when it is transferred to the tensioned state.
- the recesses 303 have a greater extent in order to enable a radial displacement of the pins 113.
- the pins In the relaxed state, which is shown in Figure 3, the pins are positioned close to the first walls of the recesses.
- Figure 4 shows the situation in which the sleeve has been brought into the tensioned state. Since the individual elements correspond to those in Figure 3, the reference symbols have been omitted for the sake of clarity. It can be seen that the interruption 110 has increased in size and that the pins 113 have moved within the recesses 303 and are now positioned close to the second wall, which is located opposite the first wall.
- the pins to the left of the interruption and to the right of the interruption also move symmetrically with respect to the axis of symmetry that runs from the interruption to the pin in the recess 302. This means that, regardless of the direction of rotation of the winding shaft, the sleeve cannot move in the circumferential direction relative to the winding shaft.
Landscapes
- Winding Of Webs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022211035 | 2022-10-18 | ||
| PCT/EP2023/078861 WO2024083848A1 (de) | 2022-10-18 | 2023-10-17 | Hülse zum aufwickeln eines wickelguts und wickelwelle zur aufnahme einer hülse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4619331A1 true EP4619331A1 (de) | 2025-09-24 |
Family
ID=88510934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23793715.6A Pending EP4619331A1 (de) | 2022-10-18 | 2023-10-17 | Hülse zum aufwickeln eines wickelguts und wickelwelle zur aufnahme einer hülse |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4619331A1 (de) |
| WO (1) | WO2024083848A1 (de) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3802386B1 (de) | 2018-05-24 | 2025-07-30 | Windmöller & Hölscher KG | Hülse, wickeleinrichtung und verfahren zum mehrfachen, aufeinanderfolgenden aufwickeln von bahnen zu materialwickeln |
-
2023
- 2023-10-17 EP EP23793715.6A patent/EP4619331A1/de active Pending
- 2023-10-17 WO PCT/EP2023/078861 patent/WO2024083848A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024083848A1 (de) | 2024-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
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| 17P | Request for examination filed |
Effective date: 20250811 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: WINDMOELLER & HOELSCHER SE & CO. KG |