EP0975534A1 - Schutzdeckel - Google Patents
SchutzdeckelInfo
- Publication number
- EP0975534A1 EP0975534A1 EP98917394A EP98917394A EP0975534A1 EP 0975534 A1 EP0975534 A1 EP 0975534A1 EP 98917394 A EP98917394 A EP 98917394A EP 98917394 A EP98917394 A EP 98917394A EP 0975534 A1 EP0975534 A1 EP 0975534A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- sleeve
- brim
- adjacent
- roll
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/67—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
- B65D85/671—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form
Definitions
- the present invention relates to a protective insert or cover and, more particularly, to a cover for fitting into the hollow or open core of a hollow or open cored roll or coil of sheet material.
- the invention also relates to a method of protecting the annular end surface of such a roll from inadvertent damage .
- Manufactured sheet steel is wound into a roll with a substantially cylindrical hollow core so that an arm or arms of lifting or packaging machinery may be inserted therein to allow the roll to be lifted, transported or sheet wrapped.
- the annular end surface of the roll particularly at the corner edge where it meets the hollow core, is vulnerable to damage, for example by being dented or torn, especially during transportation and lifting. Any portion of the steel which is so damaged is unfit for use and, therefore, must be discarded as waste.
- a first form of previously used cover comprises a sleeve member shaped to fit inside the hollow core in contact with the inner curved surface of the roll, and an annular flange member dimensioned to surround the opening into the hollow core.
- Such a cover would be installed by inserting the sleeve member into the hollow core, to contact the inner curved surface of the roll adjacent to an annular end surface thereof, with the annular flange member lying flat against the end surface of the roll, surrounding the opening into the hollow core.
- the two cover components are held in place by the application of a shrink wrapped plastic resin sheet extending around the roll and through its hollow core.
- the cover components are manufactured from hardboard, sandwiched between layers of bitumen impregnated craft paper, laminated with polyethylene. This material is available under the Trade Mark LAMIF EX.
- a second known form of protective cover is formed from an elongate strip of an impact absorbing flexible material, such as corrugated polypropylene sheeting, shaped into two flange portions joined at a crease line.
- One flange portion is unbroken and intended for insertion into the hollow core of a roll of steel, while the other portion consists of an array of flaps or teeth which, after the first flange has been inserted into the core of the roll, is folded over and into covering contact with the annular end surface of the roll.
- the flaps or teeth prevent the insert from being irregularly folded or kinked.
- the cover is finally held in place by shrink-wrapping the assembly of roll and cover with a plastic resin sheet in completion of the packaging process.
- a disadvantage of both of the aforementioned types of insert is that they are slow and labour intensive to fit.
- cover material of the second type is supplied in rolls and must be cut precisely to the required length before insertion.
- the sleeve members of the first type of cover are often difficult to install as they can be either too loose or tight to be a good fit within a hollow core of a given roll of steel.
- covers of the first type are made from relatively high impact absorbing material
- a highly concentrated pressure is applied thereto, for example, by the pressure exerted at the nip between a lifting arm and the inner cylindrical curved surface of the roll, an imprint of the lifting arm can be formed on the inner turns of steel. This problem is particularly acute for thin gauges of steel and can also be caused by other handling procedures .
- a further disadvantage of the second known type of cover is that, once installed, gaps remain between each of the flap or tooth like portions and the so adjacent annular end face of the roll remains inadequately protected.
- An object of the present invention is to provide a cover which does not suffer from at least one of the aforementioned drawbacks of known arrangements.
- a cover for protecting an annular portion of a roll or coil of material having a hollow core comprising a sleeve, a brim surrounding the sleeve, and means for adjusting the circumference of the cover to enable the sleeve to be inserted into the hollow core.
- the circumferential adjustability of the cover enables roll-to-roll variations in core diameter to be accommodated and so the need to have several covers of different sleeve diameters is reduced.
- a cover for protecting a roll of material having a hollow core comprising a sleeve and a brim surrounding the sleeve, wherein the cover is integrally pre-formed and the brim and sleeve protect an annular portion of the roll when the sleeve is inserted into the hollow core.
- the cover is integrally pre-formed, it is much easier to install than the previously known arrangements and provides an improved fit within the hollow core of a given roll of steel .
- the cover includes means for adjusting the circumference of the cover.
- the means for adjusting the circumference of the cover enable the circumference to be adjusted after the cover has been inserted into the hollow core of a roll of material. This permits the cover to be inserted readily into the hollow core and subsequently adjusted until it forms a snug fit.
- the adjustment means are adapted to adjust the circumference of the cover during its insertion into the hollow core.
- the cover is self-adjusting, in the sense that the circumference of the cover adjusts itself automatically as the cover is inserted into the core.
- this enables fine adjustments to be made to the cover in si tu to allow for variations in batch size of the rolls of material.
- the adjustment means permit the circumference of the cover to be substantially fixed after it has been inserted into the core, to provide a snug fit and prevent movement of the cover within the hollow core.
- the adjustment means are adapted to fix the conformation or shape of the sleeve after it has been inserted into the hollow core.
- the adjustment means are further adapted to render the sleeve substantially rigid or non-flexible following insertion into the hollow core.
- the means for adjusting the circumference of the cover includes a break between adjacent portions of the sleeve and the cover is sufficiently deformable to enable said adjacent sleeve portions to be overlapped and thereby the circumference of the cover to be adjusted.
- the adjacent sleeve portions include engagement means, such as interlocking means, that are adapted to engage with one another upon overlap of the sleeve portions and to hold the sleeve portions together.
- one or both adjacent sleeve portions has a groove or an openable channel defined therein that is adapted to receive or engage with an opposing adjacent sleeve portion.
- the openable channel is in the form of a series of perforations or deep indentations in the sleeve material that break under pressure to form an open channel.
- each adjacent sleeve portion has a groove or openable channel running from the break into the adjacent sleeve region and adapted to receive an opposing adjacent sleeve portion.
- the groove or openable channel further comprises detent means at one end, to lock the opposing adjacent sleeve portions together following engagement .
- said adjustment means includes a second break defined between adjacent portions of the brim so that, in preferred embodiments, both the adjacent portions of the sleeve and adjacent portions of the brim can be overlapped to adjust the circumference of the cover.
- the adjacent brim portions also include engagement means of the kind described above in relation to the adjacent sleeve portions.
- such engagement means are in the form of a groove or openable channel, preferably with an enlarged opening at at least one end to facilitate engagement with an opposing adjacent brim portion.
- the groove or openable channel may further comprise an enlarged opening at its other end to assist in interlocking of the brim portions.
- the sleeve portions and, preferably, the brim portions adjacent to the break taper in thickness towards the break.
- said sleeve portions can be tapered sufficiently so that, when overlapped, the combined thickness of said portions is less than or corresponds substantially to that of the remainder of the elimination of abrupt variations in the thickness of the sleeve or brim in the area or areas of overlap and a consequential reduction in the risk of an imprint of the edge of an overlapped sleeve or brim portion being formed in the material of the roll .
- Preferred embodiments of either aspect of the invention include a weakening defined in a portion of the sleeve adjacent to the break, sufficient to facilitate removal of a portion of the sleeve between said weakening and the break.
- the inner end or 'tang' of the material on the roll protrudes into the hollow core and makes installation of the cover difficult. Removing the portion of the sleeve from between the weakening and the break allows the cover to be installed, with the inner end or tang of the material on the roll located in the resulting enlargement to the break.
- an additional weakening is formed in the brim adjacent to the second break, sufficient to facilitate removal of a portion of the brim between said weakening and the second break.
- the sleeve tapers in thickness and, preferably, in its radially outer circumference away from the brim to facilitate its insertion into the hollow core .
- Embodiments of either aspect of the invention can comprise at least one circumferentially compressible or crushable region. This advantageously enables greater variations in roll-to-roll core diameter to be accommodated and further reduces the need for covers with different sleeve diameters.
- the compressible or crushable region comprises a plurality of fold- like formations arranged to concertina on compression.
- the annular portion of the roll, covered by the inventive covers is disposed about a rim of its hollow core.
- Covers in accordance with the present invention can be formed by injection moulding, blow moulding, vacuum forming or mechanical forming (between rollers) from plastics materials, including polyurethanes , polypropylene and polyethylene, or, depending upon the process, certain metals, including steel.
- covers in accordance with the invention are formed by an injection moulding process, preferably from polyethylene.
- An advantage of injection moulding techniques is that they allow for economics of scale to be achieved and polyethylene is relatively inexpensive and remains flexible at low temperatures.
- the cover can be resiliently deformable to enhance the ease with which the circumference of the sleeve can be adjusted to accommodate roll-to-roll variations in core diameter.
- the material of the roll or coil is conveniently in sheet form and is, preferably, sheet steel.
- the brim advantageously can include buffer zones, in the form of raised sections, for increasing its impact resistance and to prevent damage to the annular portion of the roll.
- a method of protecting an annular portion of a roll of material having a hollow core and disposed about a rim of the hollow core comprising fitting a cover as claimed in any of the preceding claims to the roll with the sleeve extending into the hollow core and the brim and sleeve protecting said annular portion.
- the roll is a coil or roll of sheet steel and, preferably, at least two covers are fitted to said coil or roll.
- the resulting assembly of roll and covers is stretch-wrapped with plastic resin sheeting, preferably, with polyethylene sheeting.
- plastic resin sheeting preferably, with polyethylene sheeting.
- FIGURE 1 is a side view of a first embodiment of a cover in accordance with the invention, in the direction of arrow X in Figure 2.
- FIGURE 2 is a front view of the cover shown in Figure 1.
- FIGURE 3 is a side view of a second embodiment of a cover in accordance with the invention, in the direction of arrow Y shown in Figure 4.
- FIGURE 4 is a front view of the cover shown in Figure 3.
- FIGURE 5 is a side view of a third embodiment of a cover in accordance with the invention, in the direction of arrow Z shown in Figure 6.
- FIGURE 6 is a front view of the cover shown in Figure 5.
- FIGURE 7 is a sectional view through the line A-A of the covers shown in Figures 2-4 and 6;
- FIGURE 8 is a perspective view of a roll of sheet steel fitted with a cover as shown in Figures 1 and 2.
- FIGURE 9 is a partial side view of a fourth embodiment of a cover in accordance with the invention, in the direction of arrow W in Figure 10.
- FIGURE 10 is a partial front view of the cover shown in Figure 9.
- a first embodiment of the invention is illustrated in Figures 1,2,7 and 8, and comprises an annular cover 1 having a substantially tubular sleeve 2 upstanding from the radially inner margin of an annular flange portion or brim 3. As the sleeve 2 extends away from the brim 3 , it tapers both in radial thickness and overall circumference
- a break 4 is defined in the sleeve 2 and the brim 3 , between facing end surfaces 6 thereof .
- a pair of grooves 5 are provided in the sleeve 2 and brim 3, spaced from the break 4 by end portions 12 and 13 of the sleeve 2 and brim 3.
- the end portions 12 In addition to tapering away from the brim 3, the end portions 12 also taper in thickness towards the break 4. s a result, the two facing end surfaces 6 of the sleeve 2 diverge as they extend away from the brim 3 (see Figure 1) .
- the brim 3 has two radially parallel circumferentially extending ridges 7,8 on its outer face and complementary channels (not shown) on its inner face from which the sleeve 2 extends. Both ridges 7,8 terminate short of the grooves 5 and are located outside the end portions 12 and 13 of the sleeve 2 and brim 3.
- the radially inner circumferential ridge 7 is comprised of three individual sections, 7a, 7b and 7c.
- the annular cover 1 is pre-formed from injection moulded polyethylene .
- the cover 1 is fitted to a roll of steel 11 (see Figure 8) by the following procedure.
- the cover 1 is resiliently deformed, such that the end portions 12 and 13 of the sleeve 2 and brim 3 overlap and the circumference of the cover 1 is reduced sufficiently for the sleeve 2 to fit inside the roll 11' s hollow core 10.
- the sleeve 2 is then pushed into the hollow core 10, until the inner surface of the brim 3, from which the sleeve 2 extends, comes into covering contact with the annular end surface 9 of the roll of steel 11.
- the insertion procedure is assisted by the tapers in radial thickness and overall circumference of the sleeve 2.
- the cover 1 After insertion, the cover 1 expands until the sleeve 2 contacts and presses against the inner cylindrically curved surface 14 defining the hollow core 10 of the roll of steel 11. The pressure exerted upon the surface 14 by the sleeve 2 assists in preventing the cover 1 from becoming dislodged.
- the overlapped end portions 12 and 13 of the sleeve 2 and brim 3 have a combined thickness which is less than or equal to that of the corresponding portions of the sleeve 2 and brim 3.
- the inner end (not shown) of the steel sheet on the roll 11 is bent back on itself to form a "tang" protruding radially inwardly into the hollow core 10, thus making insertion of the annular cover 1 potentially difficult.
- the end portions 12 of the sleeve 2 and, if necessary, the end portions 13 of the brim 3 can be removed by breaking or cutting them off along the groove (s) 5.
- the cover 1 can then be installed so that the inner end or "tang" of the roll 11 fits in the space provided by the removal of the end portions 12 and possibly 13.
- a pair of second grooves (not shown), extending from each groove 5 to the adjacent end surface 6 of the sleeve 2, can be formed in the sleeve 2 where it meets the radially inner margin of the brim 3. It is not always necessary for the end portions 12 of the sleeve 2 to be removed for the tang to be adequately accommodated. Thus, it may be sufficient for the end portions 12 and 13 to be cut apart along said second grooves and for the end portions 12 of the sleeve 2 to be bent radially inwardly and out of the way of the tang.
- the ridges 3 on the outer face of the brim 3 can deflect inwardly under pressure and thus can act as buffers to increase the cover's ability to withstand impact and prevent damage to the annular end of the roll of steel 11.
- FIG. 3 A second embodiment of the invention is illustrated in Figures 3, 4 and 7 in which the same reference numerals are used to refer to those features which are common to the first embodiment.
- the annular cover 20 of the second embodiment is the same as the cover 1, shown in Figure 1, except that it includes four identical equally spaced circumferentially compressible or crushable regions 15.
- Each compressible region 15 extends a short circumferential distance in both the sleeve 2 and the brim 3 and comprises a series of circumferentially spaced creases or folds 17 similar in appearance and form to a concertina bellows.
- the cover 20 can be installed in a roll of steel in generally the same way as the cover 1, except that compressible regions 15 may be compressed, to further reduce the overall circumference of the cover 20.
- the second preferred embodiment of the invention can be used when the circumference, of the hollow core 10 of the steel roll 11, is substantially smaller than the circumference of the sleeve 2, and when overlapping the end portions 12,13 of the sleeve 2 and brim 3, on either side of the break 4, does not sufficiently reduce the overall circumference of the cover 1 to enable insertion.
- a third embodiment of the invention is illustrated in Figures 5,6 and 7 in which the same reference numerals are used to refer to those features which are common to the first and second embodiments.
- the third embodiment comprises a cover 30 which is the same as the cover 20 of the second embodiment, except that the end surfaces 6 of the brim 3, which define the break in the brim 4, are spaced further apart, being where the grooves 5 are located in covers 1 and 20.
- the end portions 13 of the brim are not tapered in this embodiment .
- annular covers 1, 20 or 30 can be fitted to both ends of the core 10 of a roll of steel 11. The completed assembly of roll 11 and two covers 1, 20 or 30 can then be stretch wrapped with a plastics resin sheeting, or otherwise packaged, before delivery to the customer.
- FIG. 9 A fourth embodiment of the invention is illustrated in Figures 9 and 10 in which the same reference numerals are used to refer to those features which are common to the first, second and third embodiments. Only the relevant features of the fourth embodiment are shown; the remaining features not shown are as previously described in relation to any of the previous embodiments.
- the annular cover 31 of the fourth embodiment is essentially the same as the cover 1, shown in Figure 1, except that it includes two lines of perforations 32 in adjacent sleeve portions 12 and two grooves 32 in adjacent brim portions 13.
- the lines of perforations 32 extend circumferentially a short distance from the break 4 into the adjacent sleeve portions 12 in a direction parallel to the plane containing the adjacent brim portions 13 and divide the sleeve portions 12 into regions 33, 34, 35, 36.
- the grooves 37 extend circumferentially a short distance from the break 4 into the adjacent brim potions 13 and divide the brim portions into regions 40, 41, 42, 43.
- Each groove has a widened opening 38 at the end in contact with break 4 and a recess 39 at the opposite end.
- the cover 31 is installed in a roll of steel by the following procedure.
- the cover 31 is resiliently deformed until the end portions 12 and 13 of the sleeve 2 and brim 3 are in contact and the lines of perforations 32 in the sleeve 2 and grooves 37 in the brim 3 are aligned.
- the two ends of the cover 31 adjacent to the break 4 are then twisted relative to one another whilst compressing the ends together to engage the lines 32 in adjacent sleeve portions 12 and grooves 37 in adjacent brim portions 13.
- sleeve region 33 slides under sleeve region 35 and sleeve region 34 slides over sleeve region 36, as shown in Figure 9.
- brim portion 40 slides behind brim portion 42 and brim portion 41 slides in front of brim portion 43, as shown in Figure 10.
- the cover may be resiliently compressed until it is of smaller diameter than the diameter of the core of steel, inserted into the core and allowed to resiliently expand to fit the core snugly. More preferably, however, the cover is compressed until its diameter is sufficiently small for the free end of the sleeve 12 to be inserted into the hollow core and then simply rammed home, adjusting its own circumference automatically to fit the core snugly when fully inserted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Gyroscopes (AREA)
- Electronic Switches (AREA)
- Rolls And Other Rotary Bodies (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9707752 | 1997-04-17 | ||
GBGB9707752.3A GB9707752D0 (en) | 1997-04-17 | 1997-04-17 | Protective cover |
PCT/GB1998/001125 WO1998046502A1 (en) | 1997-04-17 | 1998-04-17 | Protective cover |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0975534A1 true EP0975534A1 (de) | 2000-02-02 |
EP0975534B1 EP0975534B1 (de) | 2002-03-27 |
EP0975534B3 EP0975534B3 (de) | 2010-01-20 |
Family
ID=10810914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98917394A Expired - Lifetime EP0975534B3 (de) | 1997-04-17 | 1998-04-17 | Schutzdeckel |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0975534B3 (de) |
AT (1) | ATE215045T1 (de) |
AU (1) | AU7063498A (de) |
DE (1) | DE69804437T3 (de) |
GB (1) | GB9707752D0 (de) |
WO (1) | WO1998046502A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19930275C2 (de) * | 1999-07-01 | 2003-02-27 | Fraunhofer Ges Forschung | Schutzvorrichtung zum umfangseitigen Schutz von großvolumigen Ballen |
CA2291899A1 (en) * | 1999-12-07 | 2001-06-07 | Brian Jonathan O'sullivan | Coil protector |
ITTO20050146A1 (it) * | 2005-03-08 | 2006-09-09 | Propack S P A | Complesso di protezione per metalli, particolarmente lamiera in rotoli e formati |
RU2496706C2 (ru) * | 2008-02-22 | 2013-10-27 | Ламифлекс АБ | Защитный вкладыш |
KR101095925B1 (ko) | 2011-05-04 | 2011-12-19 | 주식회사 정우 | 롤형 철강용 포장링 |
RU169630U1 (ru) * | 2015-06-10 | 2017-03-24 | Ламифлекс АБ | Регулируемый вкладыш |
DE102018103912B4 (de) | 2018-02-21 | 2021-10-07 | Zeljko Kitic | Vorrichtung und Verfahren zum Entfernen von Spunden |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2084705A5 (de) * | 1971-03-16 | 1971-12-17 | Usinor | |
DE2528962A1 (de) * | 1975-06-28 | 1977-01-13 | Peter Kg Gerhard | Stuetzpackung fuer empfindliche schlauchrollen |
GB1515310A (en) * | 1975-10-16 | 1978-06-21 | Thwaites Ltd J | Method of packaging articles and a bung device therefor |
CA1264705A (en) * | 1985-03-15 | 1990-01-23 | Luigi Bertolotti | Wrapper for ribbon type metal coils, and procedure for forming it |
US5660277A (en) * | 1996-03-27 | 1997-08-26 | Roll Form Tech Ltd. | Coil protector |
-
1997
- 1997-04-17 GB GBGB9707752.3A patent/GB9707752D0/en active Pending
-
1998
- 1998-04-17 AU AU70634/98A patent/AU7063498A/en not_active Abandoned
- 1998-04-17 WO PCT/GB1998/001125 patent/WO1998046502A1/en active IP Right Grant
- 1998-04-17 EP EP98917394A patent/EP0975534B3/de not_active Expired - Lifetime
- 1998-04-17 DE DE69804437T patent/DE69804437T3/de not_active Expired - Lifetime
- 1998-04-17 AT AT98917394T patent/ATE215045T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9846502A1 * |
Also Published As
Publication number | Publication date |
---|---|
GB9707752D0 (en) | 1997-06-04 |
AU7063498A (en) | 1998-11-11 |
EP0975534B3 (de) | 2010-01-20 |
EP0975534B1 (de) | 2002-03-27 |
WO1998046502A1 (en) | 1998-10-22 |
ATE215045T1 (de) | 2002-04-15 |
DE69804437D1 (de) | 2002-05-02 |
DE69804437T2 (de) | 2002-07-18 |
DE69804437T3 (de) | 2010-06-10 |
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