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EP-4735335-A1 - ARRANGEMENT AND METHOD FOR CREATING AN EDGE PROTECTION RING FOR SHEET COIL WRAPPING

EP4735335A1EP 4735335 A1EP4735335 A1EP 4735335A1EP-4735335-A1

Abstract

A ring creating arrangement (200) and method for creating an edge protection ring (300) for mounting around the peripheral edge of a central hole (118) of a sheet coil (116) comprises: an edge protection material guide (360) arranged to guide edge protection material (350) from an edge protection material coil (250) to a ring creator (320); a ring creator (320) comprising a plurality of attachment means (325), arranged to attach, wherein the attachment means (325) are mounted around a rotation axis of the ring creator (320) and are adjustable in a radial direction from the rotation axis; a rotator (315), arranged to rotate the ring creator (320); a cutter (340), arranged to cut the edge protection material (350); and a ring joiner (330), arranged to join together first and second ends of the edge protection material (350), thereby creating an edge protection ring (300).

Inventors

  • MOLIN, BJÖRN
  • HALLDIN, Oskar
  • FORSSBLAD, Marcus

Assignees

  • Lamiflex Group AB

Dates

Publication Date
20260506
Application Date
20240628

Claims (20)

  1. 1 . Ring creating arrangement (200) for creating an edge protection ring (300) for mounting around the peripheral edge of a central hole (118) of a sheet coil (116), the arrangement (200) comprising: an edge protection material guide (360), arranged to receive edge protection material (350) from an edge protection material coil (250) and to guide edge protection material (350) from the edge protection material coil (250) to a ring creator (320); a ring creator (320) comprising a plurality of attachment means (325), arranged to attach to a first end of the edge protection material (350) and to further parts of the edge protection material (350), wherein the attachment means (325) are mounted around a rotation axis of the ring creator (320) and are adjustable in a radial direction from the rotation axis; a rotator (315), arranged to rotate the ring creator (320) so that the attachment means (325) can attach to further parts of the edge protection material (350); a cutter (340), arranged to cut the edge protection material (350) when a predefined length of it has been guided to the ring creator (320), thereby creating a second end of the edge protection material (350); and a ring joiner (330), arranged to join together the first and second ends of the edge protection material (350), thereby creating an edge protection ring (300).
  2. 2. Ring creating arrangement (200) according to claim 1, further comprising a ring mover (310), arranged to move the ring creator (320) to a predetermined position where the attachment means (325) can release the edge protection ring (300).
  3. 3. Ring creating arrangement (200) according to claim 1 or 2, further comprising a ring creating box (370), comprising a ring guiding surface (375) that is arranged to guide the edge protection material (350) to a ring shape.
  4. 4. Ring creating arrangement (200) according to any one of claims 1-3, wherein the attachment means (325) comprise suction cups.
  5. 5. Ring creating arrangement (200) according to any one of claims 1-4, wherein the edge protection material guide (360) comprises rollers that are arranged to be driven in synchronization with the ring creation, in order to deliver the edge protection material (350) at a desired speed.
  6. 6. Ring creating arrangement (200) according to any one of claims 1-5, wherein the edge protection material guide (360) comprises folding means (365).
  7. 7. Ring creating arrangement (200) according to claim 6, wherein the folding means (365) comprise rollers that fold the edge protection material (350) as it is guided between them.
  8. 8. Ring creating arrangement (200) according to any one of claims 1-7, wherein the edge protection material coil (250) is mounted on a rotating table (260) that is arranged to be driven in synchronization with the ring creation, in order to deliver the edge protection material (350) at a desired speed.
  9. 9. Ring creating arrangement (200) according to any one of claims 1-8, further comprising an edge protection material coil (250) comprising edge protection material (350).
  10. 10. Ring creating arrangement (200) according to any one of claims 1-9, wherein the attachment means (325) are electronically or hydraulically adjustable in a radial direction from the rotation axis.
  11. 11. Ring creating arrangement (200) according to any one of claims 1-9, further comprising a ring mover (310), arranged to move the ring creator (320) to a predetermined position where the attachment means (325) can release the edge protection ring (300) to a storage for inner edge protection rings, for example a container, a pallet or a hanger.
  12. 12. Ring creating arrangement (200) according to any one of claims 1-11, further comprising a ring mover (310), arranged to move the ring creator (320) to a predetermined position where the attachment means (325) can release the edge protection ring (300) to a robot tool arranged to pick an inner edge protection ring directly or indirectly via a temporary storage position from the ring maker (320), for mounting to the inner edge of a sheet coil.
  13. 13. Method (700) for creating an edge protection ring (300) for mounting around the peripheral edge of a central hole (118) of a sheet coil (116), the method (700) comprising: guiding (730) edge protection material (350), using an edge protection material guide (360), from an edge protection material coil (250) to a ring creator (320); attaching (750) the ring creator (320) to a first end of the edge protection material (350) and to further parts of the edge protection material (350), using attachment means (325) mounted around a rotation axis of the ring creator (320) and being adjusted in a radial direction from the rotation axis to a predetermined distance from the rotation axis; rotating (760) the ring creator (320), using a rotator (315), so that the attachment means (325) can attach to further parts of the edge protection material (350); cutting (770) the edge protection material (350), using a cutter (340), when a predefined length of it has been guided to the ring creator (320), thereby creating a second end of the edge protection material (350); and joining (780) together the first and second ends of the edge protection material (350), using a ring joiner (330), thereby creating an edge protection ring (300).
  14. 14. Method (700) according to claim 13, further comprising moving (790) the ring creator (320) to a predetermined position where the attachment means (325) can release the edge protection ring (300), using a ring mover (310).
  15. 15. Method (700) according to claim 13 or 14, further comprising guiding (745) the edge protection material (350) to a ring shape, using a ring creating box (370) comprising a ring guiding surface (375).
  16. 16. Method (700) according to any one of claims 13 to 15, further comprising arranging (710) the attachment means (325) to comprise suction cups.
  17. 17. Method (700) according to any one of claims 13-16, further comprising driving (735) rollers comprised in the edge protection material guide (360) in synchronization with the ring creation, thereby delivering the edge protection material (350) at a desired speed.
  18. 18. Method (700) according to any one of claims 13 to 17, further comprising folding (740) the edge protection material (350) using folding means (365) comprised in the edge protection material guide (360).
  19. 19. Method (700) according to claim 18, further comprising arranging (715) the folding means (365) to comprise rollers that fold the edge protection material (350) as it is guided between them.
  20. 20. Method (700) according to any one of claims 13 to 19, further comprising driving (720) a rotating table (260), on which the edge protection material coil (250) is mounted, in synchronization with the ring creation, thereby delivering the edge protection material (350) at a desired speed.

Description

ARRANGEMENT AND METHOD FOR CREATING AN EDGE PROTECTION RING FOR SHEET COIL WRAPPING TECHNICAL FIELD The present disclosure relates generally to arrangements and methods for creating edge protection rings for sheet coil wrapping. BACKGROUND Coils of sheet metal need to be properly wrapped in order to protect the sheet metal during transport and storage. WO 2021/219861 describes sheet coil wrapping using two robot arms and a wrapping tool. During a wrapping sequence, the first robot arm inserts the wrapping tool into the central hole of the sheet coil and hands it over to the second robot arm, which transports the wrapping tool along the outside of the sheet coil and hands it back to the first robot arm. Especially the edges of the sheet metal coils need to be properly protected, so that the sheet metal will not be damaged along the edges. WO 2020/193868 describes a method for sheet coil packaging, where inner edge protection is used to protect the inner edge of the sheet coil. The patent publication KR20190047962 shows a inner edge packing material feeding device for a steel sheet coil. This publication shows a fixed arrangement of feeding inner edge packing material from a magazine with rolled up packing material to a combined shaping and mounting device, arranged to shape a ring of inner edge packing material with a fixed diameter and to then mount the ring to the inner edge of a steel sheet roll. PROBLEMS WITH THE PRIOR ART Use of inner edge protection slows down the wrapping process, since the inner edge protection should preferably be mounted before the wrapping of the sheet coil begins. There is thus a need for arrangements and methods that can be used for speeding up the application of inner edge protection on sheet coils. SUMMARY The present disclosure relates to a ring creating arrangement 200 for creating an edge protection ring 300 for mounting around the peripheral edge of a central hole 118 of a sheet coil 116, the arrangement 200 comprising: an edge protection material guide 360), arranged to receive edge protection material 350 from an edge protection material coil 250 and to guide edge protection material 350 from the edge protection material coil 250 to a ring creator 320; a ring creator 320 comprising a plurality of attachment means 325, arranged to attach to a first end of the edge protection material 350 and to further parts of the edge protection material 350, wherein the attachment means 325 are mounted around a rotation axis of the ring creator 320 and are adjustable in a radial direction from the rotation axis; a rotator 315, arranged to rotate the ring creator 320 so that the attachment means 325 can attach to further parts of the edge protection material 350; a cutter 340, arranged to cut the edge protection material 350 when a predefined length of it has been guided to the ring creator 320, thereby creating a second end of the edge protection material 350; and a ring joiner 330, arranged to join together the first and second ends of the edge protection material 350, thereby creating an edge protection ring 300. Embodiments of the system comprise: an edge protection material coil comprising edge protection material; a ring creator comprising attachment means, arranged to attach to a first end of the edge protection material; an edge protection material guide, arranged to guide edge protection material from the edge protection material coil to the ring creator; a rotator, arranged to rotate the ring creator so that the attachment means can attach to further parts of the edge protection material; a cutter, arranged to cut the edge protection material when a predefined length of it has been guided to the ring creator, thereby creating a second end of the edge protection material; and a ring joiner, arranged to join together the first and second ends of the edge protection material, thereby creating an edge protection ring. The present disclosure further relates to a method 700 for creating an edge protection ring 300 for mounting around the peripheral edge of a central hole 118 of a sheet coil 116, the method 700 comprising: guiding 730 edge protection material 350, using an edge protection material guide 360, from an edge protection material coil 250 to a ring creator 320; attaching 750 the ring creator 320 to a first end of the edge protection material 350 and to further parts of the edge protection material 350, using attachment means 325 mounted around a rotation axis of the ring creator 320 and being adjusted in a radial direction from the rotation axis to a predetermined distance from the rotation axis; rotating 760 the ring creator 320, using a rotator 315, so that the attachment means 325 can attach to further parts of the edge protection material 350; cutting 770 the edge protection material 350, using a cutter 340, when a predefined length of it has been guided to the ring creator 320, thereby creating a second end of the edge protection material 350; and joining 780 togeth